drivers/staging:remove ksu from source
As per yaap rules
This commit is contained in:
kondors1995
@@ -233,8 +233,6 @@ source "drivers/trusty/Kconfig"
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source "techpack/data/drivers/Kconfig"
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source "drivers/kernelsu/Kconfig"
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comment "Lindroid DRM Loopback Driver"
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|
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source "drivers/lindroid-drm-loopback/Kconfig"
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||||
@@ -194,7 +194,6 @@ obj-$(CONFIG_TRUSTY) += trusty/
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# GNSS driver
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||||
obj-$(CONFIG_GNSS_SIRF) += gnsssirf/
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obj-$(CONFIG_GNSS) += gnss/
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obj-$(CONFIG_KSU) += kernelsu/
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# Lindroid
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obj-$(CONFIG_DRM_LINDROID_EVDI) += lindroid-drm-loopback/
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||||
|
||||
@@ -514,21 +514,11 @@ static void input_handle_event(struct input_dev *dev,
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* to 'seed' initial state of a switch or initial position of absolute
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||||
* axis, etc.
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*/
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||||
#ifdef CONFIG_KSU
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extern bool ksu_input_hook __read_mostly;
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extern int ksu_handle_input_handle_event(unsigned int *type, unsigned int *code, int *value);
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#endif
|
||||
|
||||
void input_event(struct input_dev *dev,
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unsigned int type, unsigned int code, int value)
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{
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unsigned long flags;
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|
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#ifdef CONFIG_KSU
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||||
if (unlikely(ksu_input_hook))
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ksu_handle_input_handle_event(&type, &code, &value);
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||||
#endif
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||||
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||||
if (is_event_supported(type, dev->evbit, EV_MAX)) {
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spin_lock_irqsave(&dev->event_lock, flags);
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|
||||
@@ -1,43 +0,0 @@
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||||
menu "KernelSU"
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||||
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||||
config KSU
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||||
tristate "KernelSU function support"
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depends on OVERLAY_FS
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default y
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help
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||||
Enable kernel-level root privileges on Android System.
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||||
To compile as a module, choose M here: the
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module will be called kernelsu.
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config KSU_KPROBES_HOOK
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bool "Use kprobes for kernelsu"
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depends on KSU
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depends on KPROBES
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default y
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help
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Disable if you use manual hooks.
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config KSU_DEBUG
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bool "KernelSU debug mode"
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depends on KSU
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default n
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help
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Enable KernelSU debug mode.
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config KSU_ALLOWLIST_WORKAROUND
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bool "KernelSU Session Keyring Init workaround"
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depends on KSU
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default n
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help
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||||
Enable session keyring init workaround for problematic devices.
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||||
Useful for situations where the SU allowlist is not kept after a reboot.
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config KSU_LSM_SECURITY_HOOKS
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bool "use lsm security hooks"
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depends on KSU
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default y
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help
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Disabling this is mostly only useful for kernel 4.1 and older.
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Make sure to implement manual hooks on security/security.c.
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endmenu
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||||
@@ -1,339 +0,0 @@
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||||
GNU GENERAL PUBLIC LICENSE
|
||||
Version 2, June 1991
|
||||
|
||||
Copyright (C) 1989, 1991 Free Software Foundation, Inc.,
|
||||
51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
|
||||
Everyone is permitted to copy and distribute verbatim copies
|
||||
of this license document, but changing it is not allowed.
|
||||
|
||||
Preamble
|
||||
|
||||
The licenses for most software are designed to take away your
|
||||
freedom to share and change it. By contrast, the GNU General Public
|
||||
License is intended to guarantee your freedom to share and change free
|
||||
software--to make sure the software is free for all its users. This
|
||||
General Public License applies to most of the Free Software
|
||||
Foundation's software and to any other program whose authors commit to
|
||||
using it. (Some other Free Software Foundation software is covered by
|
||||
the GNU Lesser General Public License instead.) You can apply it to
|
||||
your programs, too.
|
||||
|
||||
When we speak of free software, we are referring to freedom, not
|
||||
price. Our General Public Licenses are designed to make sure that you
|
||||
have the freedom to distribute copies of free software (and charge for
|
||||
this service if you wish), that you receive source code or can get it
|
||||
if you want it, that you can change the software or use pieces of it
|
||||
in new free programs; and that you know you can do these things.
|
||||
|
||||
To protect your rights, we need to make restrictions that forbid
|
||||
anyone to deny you these rights or to ask you to surrender the rights.
|
||||
These restrictions translate to certain responsibilities for you if you
|
||||
distribute copies of the software, or if you modify it.
|
||||
|
||||
For example, if you distribute copies of such a program, whether
|
||||
gratis or for a fee, you must give the recipients all the rights that
|
||||
you have. You must make sure that they, too, receive or can get the
|
||||
source code. And you must show them these terms so they know their
|
||||
rights.
|
||||
|
||||
We protect your rights with two steps: (1) copyright the software, and
|
||||
(2) offer you this license which gives you legal permission to copy,
|
||||
distribute and/or modify the software.
|
||||
|
||||
Also, for each author's protection and ours, we want to make certain
|
||||
that everyone understands that there is no warranty for this free
|
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software. If the software is modified by someone else and passed on, we
|
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want its recipients to know that what they have is not the original, so
|
||||
that any problems introduced by others will not reflect on the original
|
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authors' reputations.
|
||||
|
||||
Finally, any free program is threatened constantly by software
|
||||
patents. We wish to avoid the danger that redistributors of a free
|
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program will individually obtain patent licenses, in effect making the
|
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program proprietary. To prevent this, we have made it clear that any
|
||||
patent must be licensed for everyone's free use or not licensed at all.
|
||||
|
||||
The precise terms and conditions for copying, distribution and
|
||||
modification follow.
|
||||
|
||||
GNU GENERAL PUBLIC LICENSE
|
||||
TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION
|
||||
|
||||
0. This License applies to any program or other work which contains
|
||||
a notice placed by the copyright holder saying it may be distributed
|
||||
under the terms of this General Public License. The "Program", below,
|
||||
refers to any such program or work, and a "work based on the Program"
|
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means either the Program or any derivative work under copyright law:
|
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that is to say, a work containing the Program or a portion of it,
|
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either verbatim or with modifications and/or translated into another
|
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language. (Hereinafter, translation is included without limitation in
|
||||
the term "modification".) Each licensee is addressed as "you".
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|
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Activities other than copying, distribution and modification are not
|
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covered by this License; they are outside its scope. The act of
|
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running the Program is not restricted, and the output from the Program
|
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is covered only if its contents constitute a work based on the
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Program (independent of having been made by running the Program).
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Whether that is true depends on what the Program does.
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1. You may copy and distribute verbatim copies of the Program's
|
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source code as you receive it, in any medium, provided that you
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conspicuously and appropriately publish on each copy an appropriate
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|
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and give any other recipients of the Program a copy of this License
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along with the Program.
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You may charge a fee for the physical act of transferring a copy, and
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you may at your option offer warranty protection in exchange for a fee.
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2. You may modify your copy or copies of the Program or any portion
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distribute such modifications or work under the terms of Section 1
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a) You must cause the modified files to carry prominent notices
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b) You must cause any work that you distribute or publish, that in
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whole or in part contains or is derived from the Program or any
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part thereof, to be licensed as a whole at no charge to all third
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c) If the modified program normally reads commands interactively
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|
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a warranty) and that users may redistribute the program under
|
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License. (Exception: if the Program itself is interactive but
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does not normally print such an announcement, your work based on
|
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the Program is not required to print an announcement.)
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These requirements apply to the modified work as a whole. If
|
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identifiable sections of that work are not derived from the Program,
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and can be reasonably considered independent and separate works in
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themselves, then this License, and its terms, do not apply to those
|
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sections when you distribute them as separate works. But when you
|
||||
distribute the same sections as part of a whole which is a work based
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on the Program, the distribution of the whole must be on the terms of
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this License, whose permissions for other licensees extend to the
|
||||
entire whole, and thus to each and every part regardless of who wrote it.
|
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|
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Thus, it is not the intent of this section to claim rights or contest
|
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your rights to work written entirely by you; rather, the intent is to
|
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exercise the right to control the distribution of derivative or
|
||||
collective works based on the Program.
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In addition, mere aggregation of another work not based on the Program
|
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with the Program (or with a work based on the Program) on a volume of
|
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a storage or distribution medium does not bring the other work under
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||||
the scope of this License.
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3. You may copy and distribute the Program (or a work based on it,
|
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under Section 2) in object code or executable form under the terms of
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Sections 1 and 2 above provided that you also do one of the following:
|
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|
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a) Accompany it with the complete corresponding machine-readable
|
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source code, which must be distributed under the terms of Sections
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1 and 2 above on a medium customarily used for software interchange; or,
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|
||||
b) Accompany it with a written offer, valid for at least three
|
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years, to give any third party, for a charge no more than your
|
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cost of physically performing source distribution, a complete
|
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machine-readable copy of the corresponding source code, to be
|
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distributed under the terms of Sections 1 and 2 above on a medium
|
||||
customarily used for software interchange; or,
|
||||
|
||||
c) Accompany it with the information you received as to the offer
|
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to distribute corresponding source code. (This alternative is
|
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allowed only for noncommercial distribution and only if you
|
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received the program in object code or executable form with such
|
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an offer, in accord with Subsection b above.)
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|
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The source code for a work means the preferred form of the work for
|
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making modifications to it. For an executable work, complete source
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code means all the source code for all modules it contains, plus any
|
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associated interface definition files, plus the scripts used to
|
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control compilation and installation of the executable. However, as a
|
||||
special exception, the source code distributed need not include
|
||||
anything that is normally distributed (in either source or binary
|
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form) with the major components (compiler, kernel, and so on) of the
|
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operating system on which the executable runs, unless that component
|
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itself accompanies the executable.
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If distribution of executable or object code is made by offering
|
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access to copy from a designated place, then offering equivalent
|
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access to copy the source code from the same place counts as
|
||||
distribution of the source code, even though third parties are not
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compelled to copy the source along with the object code.
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4. You may not copy, modify, sublicense, or distribute the Program
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except as expressly provided under this License. Any attempt
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otherwise to copy, modify, sublicense or distribute the Program is
|
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void, and will automatically terminate your rights under this License.
|
||||
However, parties who have received copies, or rights, from you under
|
||||
this License will not have their licenses terminated so long as such
|
||||
parties remain in full compliance.
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|
||||
5. You are not required to accept this License, since you have not
|
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signed it. However, nothing else grants you permission to modify or
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distribute the Program or its derivative works. These actions are
|
||||
prohibited by law if you do not accept this License. Therefore, by
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||||
modifying or distributing the Program (or any work based on the
|
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Program), you indicate your acceptance of this License to do so, and
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all its terms and conditions for copying, distributing or modifying
|
||||
the Program or works based on it.
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||||
|
||||
6. Each time you redistribute the Program (or any work based on the
|
||||
Program), the recipient automatically receives a license from the
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original licensor to copy, distribute or modify the Program subject to
|
||||
these terms and conditions. You may not impose any further
|
||||
restrictions on the recipients' exercise of the rights granted herein.
|
||||
You are not responsible for enforcing compliance by third parties to
|
||||
this License.
|
||||
|
||||
7. If, as a consequence of a court judgment or allegation of patent
|
||||
infringement or for any other reason (not limited to patent issues),
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||||
conditions are imposed on you (whether by court order, agreement or
|
||||
otherwise) that contradict the conditions of this License, they do not
|
||||
excuse you from the conditions of this License. If you cannot
|
||||
distribute so as to satisfy simultaneously your obligations under this
|
||||
License and any other pertinent obligations, then as a consequence you
|
||||
may not distribute the Program at all. For example, if a patent
|
||||
license would not permit royalty-free redistribution of the Program by
|
||||
all those who receive copies directly or indirectly through you, then
|
||||
the only way you could satisfy both it and this License would be to
|
||||
refrain entirely from distribution of the Program.
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||||
|
||||
If any portion of this section is held invalid or unenforceable under
|
||||
any particular circumstance, the balance of the section is intended to
|
||||
apply and the section as a whole is intended to apply in other
|
||||
circumstances.
|
||||
|
||||
It is not the purpose of this section to induce you to infringe any
|
||||
patents or other property right claims or to contest validity of any
|
||||
such claims; this section has the sole purpose of protecting the
|
||||
integrity of the free software distribution system, which is
|
||||
implemented by public license practices. Many people have made
|
||||
generous contributions to the wide range of software distributed
|
||||
through that system in reliance on consistent application of that
|
||||
system; it is up to the author/donor to decide if he or she is willing
|
||||
to distribute software through any other system and a licensee cannot
|
||||
impose that choice.
|
||||
|
||||
This section is intended to make thoroughly clear what is believed to
|
||||
be a consequence of the rest of this License.
|
||||
|
||||
8. If the distribution and/or use of the Program is restricted in
|
||||
certain countries either by patents or by copyrighted interfaces, the
|
||||
original copyright holder who places the Program under this License
|
||||
may add an explicit geographical distribution limitation excluding
|
||||
those countries, so that distribution is permitted only in or among
|
||||
countries not thus excluded. In such case, this License incorporates
|
||||
the limitation as if written in the body of this License.
|
||||
|
||||
9. The Free Software Foundation may publish revised and/or new versions
|
||||
of the General Public License from time to time. Such new versions will
|
||||
be similar in spirit to the present version, but may differ in detail to
|
||||
address new problems or concerns.
|
||||
|
||||
Each version is given a distinguishing version number. If the Program
|
||||
specifies a version number of this License which applies to it and "any
|
||||
later version", you have the option of following the terms and conditions
|
||||
either of that version or of any later version published by the Free
|
||||
Software Foundation. If the Program does not specify a version number of
|
||||
this License, you may choose any version ever published by the Free Software
|
||||
Foundation.
|
||||
|
||||
10. If you wish to incorporate parts of the Program into other free
|
||||
programs whose distribution conditions are different, write to the author
|
||||
to ask for permission. For software which is copyrighted by the Free
|
||||
Software Foundation, write to the Free Software Foundation; we sometimes
|
||||
make exceptions for this. Our decision will be guided by the two goals
|
||||
of preserving the free status of all derivatives of our free software and
|
||||
of promoting the sharing and reuse of software generally.
|
||||
|
||||
NO WARRANTY
|
||||
|
||||
11. BECAUSE THE PROGRAM IS LICENSED FREE OF CHARGE, THERE IS NO WARRANTY
|
||||
FOR THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE LAW. EXCEPT WHEN
|
||||
OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES
|
||||
PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED
|
||||
OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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||||
MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. THE ENTIRE RISK AS
|
||||
TO THE QUALITY AND PERFORMANCE OF THE PROGRAM IS WITH YOU. SHOULD THE
|
||||
PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING,
|
||||
REPAIR OR CORRECTION.
|
||||
|
||||
12. IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
|
||||
WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY AND/OR
|
||||
REDISTRIBUTE THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES,
|
||||
INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING
|
||||
OUT OF THE USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED
|
||||
TO LOSS OF DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY
|
||||
YOU OR THIRD PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER
|
||||
PROGRAMS), EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE
|
||||
POSSIBILITY OF SUCH DAMAGES.
|
||||
|
||||
END OF TERMS AND CONDITIONS
|
||||
|
||||
How to Apply These Terms to Your New Programs
|
||||
|
||||
If you develop a new program, and you want it to be of the greatest
|
||||
possible use to the public, the best way to achieve this is to make it
|
||||
free software which everyone can redistribute and change under these terms.
|
||||
|
||||
To do so, attach the following notices to the program. It is safest
|
||||
to attach them to the start of each source file to most effectively
|
||||
convey the exclusion of warranty; and each file should have at least
|
||||
the "copyright" line and a pointer to where the full notice is found.
|
||||
|
||||
<one line to give the program's name and a brief idea of what it does.>
|
||||
Copyright (C) <year> <name of author>
|
||||
|
||||
This program is free software; you can redistribute it and/or modify
|
||||
it under the terms of the GNU General Public License as published by
|
||||
the Free Software Foundation; either version 2 of the License, or
|
||||
(at your option) any later version.
|
||||
|
||||
This program is distributed in the hope that it will be useful,
|
||||
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
GNU General Public License for more details.
|
||||
|
||||
You should have received a copy of the GNU General Public License along
|
||||
with this program; if not, write to the Free Software Foundation, Inc.,
|
||||
51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
|
||||
|
||||
Also add information on how to contact you by electronic and paper mail.
|
||||
|
||||
If the program is interactive, make it output a short notice like this
|
||||
when it starts in an interactive mode:
|
||||
|
||||
Gnomovision version 69, Copyright (C) year name of author
|
||||
Gnomovision comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
|
||||
This is free software, and you are welcome to redistribute it
|
||||
under certain conditions; type `show c' for details.
|
||||
|
||||
The hypothetical commands `show w' and `show c' should show the appropriate
|
||||
parts of the General Public License. Of course, the commands you use may
|
||||
be called something other than `show w' and `show c'; they could even be
|
||||
mouse-clicks or menu items--whatever suits your program.
|
||||
|
||||
You should also get your employer (if you work as a programmer) or your
|
||||
school, if any, to sign a "copyright disclaimer" for the program, if
|
||||
necessary. Here is a sample; alter the names:
|
||||
|
||||
Yoyodyne, Inc., hereby disclaims all copyright interest in the program
|
||||
`Gnomovision' (which makes passes at compilers) written by James Hacker.
|
||||
|
||||
<signature of Ty Coon>, 1 April 1989
|
||||
Ty Coon, President of Vice
|
||||
|
||||
This General Public License does not permit incorporating your program into
|
||||
proprietary programs. If your program is a subroutine library, you may
|
||||
consider it more useful to permit linking proprietary applications with the
|
||||
library. If this is what you want to do, use the GNU Lesser General
|
||||
Public License instead of this License.
|
||||
@@ -1,118 +0,0 @@
|
||||
kernelsu-objs := ksu.o
|
||||
kernelsu-objs += allowlist.o
|
||||
kernelsu-objs += apk_sign.o
|
||||
kernelsu-objs += sucompat.o
|
||||
kernelsu-objs += throne_tracker.o
|
||||
kernelsu-objs += core_hook.o
|
||||
kernelsu-objs += ksud.o
|
||||
kernelsu-objs += embed_ksud.o
|
||||
kernelsu-objs += kernel_compat.o
|
||||
|
||||
kernelsu-objs += selinux/selinux.o
|
||||
kernelsu-objs += selinux/sepolicy.o
|
||||
kernelsu-objs += selinux/rules.o
|
||||
ccflags-y += -I$(srctree)/security/selinux -I$(srctree)/security/selinux/include
|
||||
ccflags-y += -I$(objtree)/security/selinux -include $(srctree)/include/uapi/asm-generic/errno.h
|
||||
|
||||
obj-$(CONFIG_KSU) += kernelsu.o
|
||||
|
||||
# .git is a text file while the module is imported by 'git submodule add'.
|
||||
KSU_GIT_VERSION := 2651
|
||||
# ksu_version: major * 10000 + git version + 200 for historical reasons
|
||||
$(eval KSU_VERSION=$(shell expr 10000 + $(KSU_GIT_VERSION) + 200))
|
||||
ccflags-y += -DKSU_VERSION=$(KSU_VERSION)
|
||||
|
||||
ifeq ($(shell grep -q " current_sid(void)" $(srctree)/security/selinux/include/objsec.h; echo $$?),0)
|
||||
ccflags-y += -DKSU_COMPAT_HAS_CURRENT_SID
|
||||
endif
|
||||
|
||||
ifeq ($(shell grep -q "struct selinux_state " $(srctree)/security/selinux/include/security.h; echo $$?),0)
|
||||
ccflags-y += -DKSU_COMPAT_HAS_SELINUX_STATE
|
||||
endif
|
||||
|
||||
ifeq ($(shell grep -q "strncpy_from_user_nofault" $(srctree)/include/linux/uaccess.h; echo $$?),0)
|
||||
ccflags-y += -DKSU_STRNCPY_FROM_USER_NOFAULT
|
||||
endif
|
||||
|
||||
ifeq ($(shell grep -q "ssize_t kernel_read" $(srctree)/fs/read_write.c; echo $$?),0)
|
||||
ccflags-y += -DKSU_KERNEL_READ
|
||||
endif
|
||||
|
||||
ifeq ($(shell grep "ssize_t kernel_write" $(srctree)/fs/read_write.c | grep -q "const void" ; echo $$?),0)
|
||||
ccflags-y += -DKSU_KERNEL_WRITE
|
||||
endif
|
||||
|
||||
ifndef KSU_NEXT_MANAGER_SIZE
|
||||
KSU_NEXT_MANAGER_SIZE := 0x3e6
|
||||
endif
|
||||
|
||||
ifndef KSU_NEXT_MANAGER_HASH
|
||||
KSU_NEXT_MANAGER_HASH := 79e590113c4c4c0c222978e413a5faa801666957b1212a328e46c00c69821bf7
|
||||
endif
|
||||
|
||||
ifdef KSU_MANAGER_PACKAGE
|
||||
ccflags-y += -DKSU_MANAGER_PACKAGE=\"$(KSU_MANAGER_PACKAGE)\"
|
||||
$(info -- KernelSU-Next Manager package name: $(KSU_MANAGER_PACKAGE))
|
||||
endif
|
||||
|
||||
$(info -- KernelSU-Next Manager signature size: $(KSU_NEXT_MANAGER_SIZE))
|
||||
$(info -- KernelSU-Next Manager signature hash: $(KSU_NEXT_MANAGER_HASH))
|
||||
|
||||
ccflags-y += -DEXPECTED_MANAGER_SIZE=$(KSU_NEXT_MANAGER_SIZE)
|
||||
ccflags-y += -DEXPECTED_MANAGER_HASH=\"$(KSU_NEXT_MANAGER_HASH)\"
|
||||
|
||||
ccflags-y += -DKSU_UMOUNT
|
||||
|
||||
ifneq ($(shell grep -Eq "^static int can_umount" $(srctree)/fs/namespace.c; echo $$?),0)
|
||||
$(info -- KSU_NEXT: adding function 'static int can_umount(const struct path *path, int flags);' to $(srctree)/fs/namespace.c)
|
||||
CAN_UMOUNT = static int can_umount(const struct path *path, int flags)\n\
|
||||
{\n\t\
|
||||
struct mount *mnt = real_mount(path->mnt);\n\t\
|
||||
if (flags & ~(MNT_FORCE | MNT_DETACH | MNT_EXPIRE | UMOUNT_NOFOLLOW))\n\t\t\
|
||||
return -EINVAL;\n\t\
|
||||
if (!may_mount())\n\t\t\
|
||||
return -EPERM;\n\t\
|
||||
if (path->dentry != path->mnt->mnt_root)\n\t\t\
|
||||
return -EINVAL;\n\t\
|
||||
if (!check_mnt(mnt))\n\t\t\
|
||||
return -EINVAL;\n\t\
|
||||
if (mnt->mnt.mnt_flags & MNT_LOCKED)\n\t\t\
|
||||
return -EINVAL;\n\t\
|
||||
if (flags & MNT_FORCE && !capable(CAP_SYS_ADMIN))\n\t\t\
|
||||
return -EPERM;\n\t\
|
||||
return 0;\n\
|
||||
}\n
|
||||
$(shell sed -i '/^static bool is_mnt_ns_file/i $(CAN_UMOUNT)' $(srctree)/fs/namespace.c;)
|
||||
endif
|
||||
|
||||
ifneq ($(shell grep -Eq "^int path_umount" $(srctree)/fs/namespace.c; echo $$?),0)
|
||||
$(info -- KSU_NEXT: adding function 'int path_umount(struct path *path, int flags);' to $(srctree)/fs/namespace.c)
|
||||
PATH_UMOUNT = int path_umount(struct path *path, int flags)\n\
|
||||
{\n\t\
|
||||
struct mount *mnt = real_mount(path->mnt);\n\t\
|
||||
int ret;\n\t\
|
||||
ret = can_umount(path, flags);\n\t\
|
||||
if (!ret)\n\t\t\
|
||||
ret = do_umount(mnt, flags);\n\t\
|
||||
dput(path->dentry);\n\t\
|
||||
mntput_no_expire(mnt);\n\t\
|
||||
return ret;\n\
|
||||
}\n
|
||||
$(shell sed -i '/^static bool is_mnt_ns_file/i $(PATH_UMOUNT)' $(srctree)/fs/namespace.c;)
|
||||
endif
|
||||
|
||||
ifneq ($(shell grep -Eq "^int path_umount" $(srctree)/fs/internal.h; echo $$?),0)
|
||||
$(shell sed -i '/^extern void __init mnt_init/a int path_umount(struct path *path, int flags);' $(srctree)/fs/internal.h;)
|
||||
$(info -- KSU_NEXT: adding 'int path_umount(struct path *path, int flags);' to $(srctree)/fs/internal.h)
|
||||
endif
|
||||
|
||||
ifneq ($(shell grep -q "atomic_t filter_count;" $(srctree)/include/linux/seccomp.h; echo $$?),0)
|
||||
$(info -- KSU_NEXT: patching struct seccomp for filter_count)
|
||||
$(shell sed -i '/int mode;/a\ atomic_t filter_count;' $(srctree)/include/linux/seccomp.h)
|
||||
$(shell sed -i '/#include <linux\/thread_info.h>/a\#include <linux/atomic.h>' $(srctree)/include/linux/seccomp.h)
|
||||
endif
|
||||
|
||||
ccflags-y += -Wno-implicit-function-declaration -Wno-strict-prototypes -Wno-int-conversion -Wno-gcc-compat
|
||||
ccflags-y += -Wno-declaration-after-statement -Wno-unused-function
|
||||
|
||||
# Keep a new line here!! Because someone may append config
|
||||
@@ -1,528 +0,0 @@
|
||||
#include <linux/capability.h>
|
||||
#include <linux/compiler.h>
|
||||
#include <linux/fs.h>
|
||||
#include <linux/gfp.h>
|
||||
#include <linux/kernel.h>
|
||||
#include <linux/list.h>
|
||||
#include <linux/printk.h>
|
||||
#include <linux/slab.h>
|
||||
#include <linux/types.h>
|
||||
#include <linux/version.h>
|
||||
#if LINUX_VERSION_CODE >= KERNEL_VERSION(4, 14, 0)
|
||||
#include <linux/compiler_types.h>
|
||||
#endif
|
||||
|
||||
#include "ksu.h"
|
||||
#include "klog.h" // IWYU pragma: keep
|
||||
#include "selinux/selinux.h"
|
||||
#include "kernel_compat.h"
|
||||
#include "allowlist.h"
|
||||
#include "manager.h"
|
||||
|
||||
#define FILE_MAGIC 0x7f4b5355 // ' KSU', u32
|
||||
#define FILE_FORMAT_VERSION 3 // u32
|
||||
|
||||
#define KSU_APP_PROFILE_PRESERVE_UID 9999 // NOBODY_UID
|
||||
#define KSU_DEFAULT_SELINUX_DOMAIN "u:r:su:s0"
|
||||
|
||||
static DEFINE_MUTEX(allowlist_mutex);
|
||||
|
||||
// default profiles, these may be used frequently, so we cache it
|
||||
static struct root_profile default_root_profile;
|
||||
static struct non_root_profile default_non_root_profile;
|
||||
|
||||
static int allow_list_arr[PAGE_SIZE / sizeof(int)] __read_mostly __aligned(PAGE_SIZE);
|
||||
static int allow_list_pointer __read_mostly = 0;
|
||||
|
||||
static void remove_uid_from_arr(uid_t uid)
|
||||
{
|
||||
int *temp_arr;
|
||||
int i, j;
|
||||
|
||||
if (allow_list_pointer == 0)
|
||||
return;
|
||||
|
||||
temp_arr = kmalloc(sizeof(allow_list_arr), GFP_KERNEL);
|
||||
if (temp_arr == NULL) {
|
||||
pr_err("%s: unable to allocate memory\n", __func__);
|
||||
return;
|
||||
}
|
||||
|
||||
for (i = j = 0; i < allow_list_pointer; i++) {
|
||||
if (allow_list_arr[i] == uid)
|
||||
continue;
|
||||
temp_arr[j++] = allow_list_arr[i];
|
||||
}
|
||||
|
||||
allow_list_pointer = j;
|
||||
|
||||
for (; j < ARRAY_SIZE(allow_list_arr); j++)
|
||||
temp_arr[j] = -1;
|
||||
|
||||
memcpy(&allow_list_arr, temp_arr, PAGE_SIZE);
|
||||
kfree(temp_arr);
|
||||
}
|
||||
|
||||
static void init_default_profiles()
|
||||
{
|
||||
kernel_cap_t full_cap = CAP_FULL_SET;
|
||||
|
||||
default_root_profile.uid = 0;
|
||||
default_root_profile.gid = 0;
|
||||
default_root_profile.groups_count = 1;
|
||||
default_root_profile.groups[0] = 0;
|
||||
memcpy(&default_root_profile.capabilities.effective, &full_cap,
|
||||
sizeof(default_root_profile.capabilities.effective));
|
||||
default_root_profile.namespaces = 0;
|
||||
strcpy(default_root_profile.selinux_domain, KSU_DEFAULT_SELINUX_DOMAIN);
|
||||
|
||||
// This means that we will umount modules by default!
|
||||
default_non_root_profile.umount_modules = true;
|
||||
}
|
||||
|
||||
struct perm_data {
|
||||
struct list_head list;
|
||||
struct app_profile profile;
|
||||
};
|
||||
|
||||
static struct list_head allow_list;
|
||||
|
||||
static uint8_t allow_list_bitmap[PAGE_SIZE] __read_mostly __aligned(PAGE_SIZE);
|
||||
#define BITMAP_UID_MAX ((sizeof(allow_list_bitmap) * BITS_PER_BYTE) - 1)
|
||||
|
||||
#define KERNEL_SU_ALLOWLIST "/data/adb/ksu/.allowlist"
|
||||
|
||||
static struct work_struct ksu_save_work;
|
||||
static struct work_struct ksu_load_work;
|
||||
|
||||
bool persistent_allow_list(void);
|
||||
|
||||
void ksu_show_allow_list(void)
|
||||
{
|
||||
struct perm_data *p = NULL;
|
||||
struct list_head *pos = NULL;
|
||||
pr_info("ksu_show_allow_list\n");
|
||||
list_for_each (pos, &allow_list) {
|
||||
p = list_entry(pos, struct perm_data, list);
|
||||
pr_info("uid :%d, allow: %d\n", p->profile.current_uid,
|
||||
p->profile.allow_su);
|
||||
}
|
||||
}
|
||||
|
||||
#ifdef CONFIG_KSU_DEBUG
|
||||
static void ksu_grant_root_to_shell()
|
||||
{
|
||||
struct app_profile profile = {
|
||||
.version = KSU_APP_PROFILE_VER,
|
||||
.allow_su = true,
|
||||
.current_uid = 2000,
|
||||
};
|
||||
strcpy(profile.key, "com.android.shell");
|
||||
strcpy(profile.rp_config.profile.selinux_domain, KSU_DEFAULT_SELINUX_DOMAIN);
|
||||
ksu_set_app_profile(&profile, false);
|
||||
}
|
||||
#endif
|
||||
|
||||
bool ksu_get_app_profile(struct app_profile *profile)
|
||||
{
|
||||
struct perm_data *p = NULL;
|
||||
struct list_head *pos = NULL;
|
||||
bool found = false;
|
||||
|
||||
list_for_each (pos, &allow_list) {
|
||||
p = list_entry(pos, struct perm_data, list);
|
||||
bool uid_match = profile->current_uid == p->profile.current_uid;
|
||||
if (uid_match) {
|
||||
// found it, override it with ours
|
||||
memcpy(profile, &p->profile, sizeof(*profile));
|
||||
found = true;
|
||||
goto exit;
|
||||
}
|
||||
}
|
||||
|
||||
exit:
|
||||
return found;
|
||||
}
|
||||
|
||||
static inline bool forbid_system_uid(uid_t uid) {
|
||||
#define SHELL_UID 2000
|
||||
#define SYSTEM_UID 1000
|
||||
return uid < SHELL_UID && uid != SYSTEM_UID;
|
||||
}
|
||||
|
||||
static bool profile_valid(struct app_profile *profile)
|
||||
{
|
||||
if (!profile) {
|
||||
return false;
|
||||
}
|
||||
|
||||
if (profile->version < KSU_APP_PROFILE_VER) {
|
||||
pr_info("Unsupported profile version: %d\n", profile->version);
|
||||
return false;
|
||||
}
|
||||
|
||||
if (profile->allow_su) {
|
||||
if (profile->rp_config.profile.groups_count > KSU_MAX_GROUPS) {
|
||||
return false;
|
||||
}
|
||||
|
||||
if (strlen(profile->rp_config.profile.selinux_domain) == 0) {
|
||||
return false;
|
||||
}
|
||||
}
|
||||
|
||||
return true;
|
||||
}
|
||||
|
||||
bool ksu_set_app_profile(struct app_profile *profile, bool persist)
|
||||
{
|
||||
struct perm_data *p = NULL;
|
||||
struct list_head *pos = NULL;
|
||||
bool result = false;
|
||||
|
||||
if (!profile_valid(profile)) {
|
||||
pr_err("Failed to set app profile: invalid profile!\n");
|
||||
return false;
|
||||
}
|
||||
|
||||
list_for_each (pos, &allow_list) {
|
||||
p = list_entry(pos, struct perm_data, list);
|
||||
// both uid and package must match, otherwise it will break multiple package with different user id
|
||||
if (profile->current_uid == p->profile.current_uid &&
|
||||
!strcmp(profile->key, p->profile.key)) {
|
||||
// found it, just override it all!
|
||||
memcpy(&p->profile, profile, sizeof(*profile));
|
||||
result = true;
|
||||
goto out;
|
||||
}
|
||||
}
|
||||
|
||||
// not found, alloc a new node!
|
||||
p = (struct perm_data *)kmalloc(sizeof(struct perm_data), GFP_KERNEL);
|
||||
if (!p) {
|
||||
pr_err("ksu_set_app_profile alloc failed\n");
|
||||
return false;
|
||||
}
|
||||
|
||||
memcpy(&p->profile, profile, sizeof(*profile));
|
||||
if (profile->allow_su) {
|
||||
pr_info("set root profile, key: %s, uid: %d, gid: %d, context: %s\n",
|
||||
profile->key, profile->current_uid,
|
||||
profile->rp_config.profile.gid,
|
||||
profile->rp_config.profile.selinux_domain);
|
||||
} else {
|
||||
pr_info("set app profile, key: %s, uid: %d, umount modules: %d\n",
|
||||
profile->key, profile->current_uid,
|
||||
profile->nrp_config.profile.umount_modules);
|
||||
}
|
||||
list_add_tail(&p->list, &allow_list);
|
||||
|
||||
out:
|
||||
if (profile->current_uid <= BITMAP_UID_MAX) {
|
||||
if (profile->allow_su)
|
||||
allow_list_bitmap[profile->current_uid / BITS_PER_BYTE] |= 1 << (profile->current_uid % BITS_PER_BYTE);
|
||||
else
|
||||
allow_list_bitmap[profile->current_uid / BITS_PER_BYTE] &= ~(1 << (profile->current_uid % BITS_PER_BYTE));
|
||||
} else {
|
||||
if (profile->allow_su) {
|
||||
/*
|
||||
* 1024 apps with uid higher than BITMAP_UID_MAX
|
||||
* registered to request superuser?
|
||||
*/
|
||||
if (allow_list_pointer >= ARRAY_SIZE(allow_list_arr)) {
|
||||
pr_err("too many apps registered\n");
|
||||
WARN_ON(1);
|
||||
return false;
|
||||
}
|
||||
allow_list_arr[allow_list_pointer++] = profile->current_uid;
|
||||
} else {
|
||||
remove_uid_from_arr(profile->current_uid);
|
||||
}
|
||||
}
|
||||
result = true;
|
||||
|
||||
// check if the default profiles is changed, cache it to a single struct to accelerate access.
|
||||
if (unlikely(!strcmp(profile->key, "$"))) {
|
||||
// set default non root profile
|
||||
memcpy(&default_non_root_profile, &profile->nrp_config.profile,
|
||||
sizeof(default_non_root_profile));
|
||||
}
|
||||
|
||||
if (unlikely(!strcmp(profile->key, "#"))) {
|
||||
// set default root profile
|
||||
memcpy(&default_root_profile, &profile->rp_config.profile,
|
||||
sizeof(default_root_profile));
|
||||
}
|
||||
|
||||
if (persist)
|
||||
persistent_allow_list();
|
||||
|
||||
return result;
|
||||
}
|
||||
|
||||
bool __ksu_is_allow_uid(uid_t uid)
|
||||
{
|
||||
int i;
|
||||
|
||||
if (unlikely(uid == 0)) {
|
||||
// already root, but only allow our domain.
|
||||
return is_ksu_domain();
|
||||
}
|
||||
|
||||
if (forbid_system_uid(uid)) {
|
||||
// do not bother going through the list if it's system
|
||||
return false;
|
||||
}
|
||||
|
||||
if (likely(ksu_is_manager_uid_valid()) && unlikely(ksu_get_manager_uid() == uid)) {
|
||||
// manager is always allowed!
|
||||
return true;
|
||||
}
|
||||
|
||||
if (likely(uid <= BITMAP_UID_MAX)) {
|
||||
return !!(allow_list_bitmap[uid / BITS_PER_BYTE] & (1 << (uid % BITS_PER_BYTE)));
|
||||
} else {
|
||||
for (i = 0; i < allow_list_pointer; i++) {
|
||||
if (allow_list_arr[i] == uid)
|
||||
return true;
|
||||
}
|
||||
}
|
||||
|
||||
return false;
|
||||
}
|
||||
|
||||
bool ksu_uid_should_umount(uid_t uid)
|
||||
{
|
||||
struct app_profile profile = { .current_uid = uid };
|
||||
if (likely(ksu_is_manager_uid_valid()) && unlikely(ksu_get_manager_uid() == uid)) {
|
||||
// we should not umount on manager!
|
||||
return false;
|
||||
}
|
||||
bool found = ksu_get_app_profile(&profile);
|
||||
if (!found) {
|
||||
// no app profile found, it must be non root app
|
||||
return default_non_root_profile.umount_modules;
|
||||
}
|
||||
if (profile.allow_su) {
|
||||
// if found and it is granted to su, we shouldn't umount for it
|
||||
return false;
|
||||
} else {
|
||||
// found an app profile
|
||||
if (profile.nrp_config.use_default) {
|
||||
return default_non_root_profile.umount_modules;
|
||||
} else {
|
||||
return profile.nrp_config.profile.umount_modules;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
struct root_profile *ksu_get_root_profile(uid_t uid)
|
||||
{
|
||||
struct perm_data *p = NULL;
|
||||
struct list_head *pos = NULL;
|
||||
|
||||
list_for_each (pos, &allow_list) {
|
||||
p = list_entry(pos, struct perm_data, list);
|
||||
if (uid == p->profile.current_uid && p->profile.allow_su) {
|
||||
if (!p->profile.rp_config.use_default) {
|
||||
return &p->profile.rp_config.profile;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
// use default profile
|
||||
return &default_root_profile;
|
||||
}
|
||||
|
||||
bool ksu_get_allow_list(int *array, int *length, bool allow)
|
||||
{
|
||||
struct perm_data *p = NULL;
|
||||
struct list_head *pos = NULL;
|
||||
int i = 0;
|
||||
list_for_each (pos, &allow_list) {
|
||||
p = list_entry(pos, struct perm_data, list);
|
||||
// pr_info("get_allow_list uid: %d allow: %d\n", p->uid, p->allow);
|
||||
if (p->profile.allow_su == allow) {
|
||||
array[i++] = p->profile.current_uid;
|
||||
}
|
||||
}
|
||||
*length = i;
|
||||
|
||||
return true;
|
||||
}
|
||||
|
||||
void do_save_allow_list(struct work_struct *work)
|
||||
{
|
||||
u32 magic = FILE_MAGIC;
|
||||
u32 version = FILE_FORMAT_VERSION;
|
||||
struct perm_data *p = NULL;
|
||||
struct list_head *pos = NULL;
|
||||
loff_t off = 0;
|
||||
|
||||
struct file *fp =
|
||||
ksu_filp_open_compat(KERNEL_SU_ALLOWLIST, O_WRONLY | O_CREAT | O_TRUNC, 0644);
|
||||
if (IS_ERR(fp)) {
|
||||
pr_err("save_allow_list create file failed: %ld\n", PTR_ERR(fp));
|
||||
return;
|
||||
}
|
||||
|
||||
// store magic and version
|
||||
if (ksu_kernel_write_compat(fp, &magic, sizeof(magic), &off) !=
|
||||
sizeof(magic)) {
|
||||
pr_err("save_allow_list write magic failed.\n");
|
||||
goto exit;
|
||||
}
|
||||
|
||||
if (ksu_kernel_write_compat(fp, &version, sizeof(version), &off) !=
|
||||
sizeof(version)) {
|
||||
pr_err("save_allow_list write version failed.\n");
|
||||
goto exit;
|
||||
}
|
||||
|
||||
list_for_each (pos, &allow_list) {
|
||||
p = list_entry(pos, struct perm_data, list);
|
||||
pr_info("save allow list, name: %s uid :%d, allow: %d\n",
|
||||
p->profile.key, p->profile.current_uid,
|
||||
p->profile.allow_su);
|
||||
|
||||
ksu_kernel_write_compat(fp, &p->profile, sizeof(p->profile),
|
||||
&off);
|
||||
}
|
||||
|
||||
exit:
|
||||
filp_close(fp, 0);
|
||||
}
|
||||
|
||||
void do_load_allow_list(struct work_struct *work)
|
||||
{
|
||||
loff_t off = 0;
|
||||
ssize_t ret = 0;
|
||||
struct file *fp = NULL;
|
||||
u32 magic;
|
||||
u32 version;
|
||||
|
||||
#ifdef CONFIG_KSU_DEBUG
|
||||
// always allow adb shell by default
|
||||
ksu_grant_root_to_shell();
|
||||
#endif
|
||||
|
||||
// load allowlist now!
|
||||
fp = ksu_filp_open_compat(KERNEL_SU_ALLOWLIST, O_RDONLY, 0);
|
||||
if (IS_ERR(fp)) {
|
||||
pr_err("load_allow_list open file failed: %ld\n", PTR_ERR(fp));
|
||||
return;
|
||||
}
|
||||
|
||||
// verify magic
|
||||
if (ksu_kernel_read_compat(fp, &magic, sizeof(magic), &off) !=
|
||||
sizeof(magic) ||
|
||||
magic != FILE_MAGIC) {
|
||||
pr_err("allowlist file invalid: %d!\n", magic);
|
||||
goto exit;
|
||||
}
|
||||
|
||||
if (ksu_kernel_read_compat(fp, &version, sizeof(version), &off) !=
|
||||
sizeof(version)) {
|
||||
pr_err("allowlist read version: %d failed\n", version);
|
||||
goto exit;
|
||||
}
|
||||
|
||||
pr_info("allowlist version: %d\n", version);
|
||||
|
||||
while (true) {
|
||||
struct app_profile profile;
|
||||
|
||||
ret = ksu_kernel_read_compat(fp, &profile, sizeof(profile),
|
||||
&off);
|
||||
|
||||
if (ret <= 0) {
|
||||
pr_info("load_allow_list read err: %zd\n", ret);
|
||||
break;
|
||||
}
|
||||
|
||||
pr_info("load_allow_uid, name: %s, uid: %d, allow: %d\n",
|
||||
profile.key, profile.current_uid, profile.allow_su);
|
||||
ksu_set_app_profile(&profile, false);
|
||||
}
|
||||
|
||||
exit:
|
||||
ksu_show_allow_list();
|
||||
filp_close(fp, 0);
|
||||
}
|
||||
|
||||
void ksu_prune_allowlist(bool (*is_uid_valid)(uid_t, char *, void *), void *data)
|
||||
{
|
||||
struct perm_data *np = NULL;
|
||||
struct perm_data *n = NULL;
|
||||
|
||||
bool modified = false;
|
||||
// TODO: use RCU!
|
||||
mutex_lock(&allowlist_mutex);
|
||||
list_for_each_entry_safe (np, n, &allow_list, list) {
|
||||
uid_t uid = np->profile.current_uid;
|
||||
char *package = np->profile.key;
|
||||
// we use this uid for special cases, don't prune it!
|
||||
bool is_preserved_uid = uid == KSU_APP_PROFILE_PRESERVE_UID;
|
||||
if (!is_preserved_uid && !is_uid_valid(uid, package, data)) {
|
||||
modified = true;
|
||||
pr_info("prune uid: %d, package: %s\n", uid, package);
|
||||
list_del(&np->list);
|
||||
if (likely(uid <= BITMAP_UID_MAX)) {
|
||||
allow_list_bitmap[uid / BITS_PER_BYTE] &= ~(1 << (uid % BITS_PER_BYTE));
|
||||
}
|
||||
remove_uid_from_arr(uid);
|
||||
smp_mb();
|
||||
kfree(np);
|
||||
}
|
||||
}
|
||||
mutex_unlock(&allowlist_mutex);
|
||||
|
||||
if (modified) {
|
||||
persistent_allow_list();
|
||||
}
|
||||
}
|
||||
|
||||
// make sure allow list works cross boot
|
||||
bool persistent_allow_list(void)
|
||||
{
|
||||
return ksu_queue_work(&ksu_save_work);
|
||||
}
|
||||
|
||||
bool ksu_load_allow_list(void)
|
||||
{
|
||||
return ksu_queue_work(&ksu_load_work);
|
||||
}
|
||||
|
||||
void ksu_allowlist_init(void)
|
||||
{
|
||||
int i;
|
||||
|
||||
BUILD_BUG_ON(sizeof(allow_list_bitmap) != PAGE_SIZE);
|
||||
BUILD_BUG_ON(sizeof(allow_list_arr) != PAGE_SIZE);
|
||||
|
||||
for (i = 0; i < ARRAY_SIZE(allow_list_arr); i++)
|
||||
allow_list_arr[i] = -1;
|
||||
|
||||
INIT_LIST_HEAD(&allow_list);
|
||||
|
||||
INIT_WORK(&ksu_save_work, do_save_allow_list);
|
||||
INIT_WORK(&ksu_load_work, do_load_allow_list);
|
||||
|
||||
init_default_profiles();
|
||||
}
|
||||
|
||||
void ksu_allowlist_exit(void)
|
||||
{
|
||||
struct perm_data *np = NULL;
|
||||
struct perm_data *n = NULL;
|
||||
|
||||
do_save_allow_list(NULL);
|
||||
|
||||
// free allowlist
|
||||
mutex_lock(&allowlist_mutex);
|
||||
list_for_each_entry_safe (np, n, &allow_list, list) {
|
||||
list_del(&np->list);
|
||||
kfree(np);
|
||||
}
|
||||
mutex_unlock(&allowlist_mutex);
|
||||
}
|
||||
@@ -1,27 +0,0 @@
|
||||
#ifndef __KSU_H_ALLOWLIST
|
||||
#define __KSU_H_ALLOWLIST
|
||||
|
||||
#include <linux/types.h>
|
||||
#include "ksu.h"
|
||||
|
||||
void ksu_allowlist_init(void);
|
||||
|
||||
void ksu_allowlist_exit(void);
|
||||
|
||||
bool ksu_load_allow_list(void);
|
||||
|
||||
void ksu_show_allow_list(void);
|
||||
|
||||
bool __ksu_is_allow_uid(uid_t uid);
|
||||
#define ksu_is_allow_uid(uid) unlikely(__ksu_is_allow_uid(uid))
|
||||
|
||||
bool ksu_get_allow_list(int *array, int *length, bool allow);
|
||||
|
||||
void ksu_prune_allowlist(bool (*is_uid_exist)(uid_t, char *, void *), void *data);
|
||||
|
||||
bool ksu_get_app_profile(struct app_profile *);
|
||||
bool ksu_set_app_profile(struct app_profile *, bool persist);
|
||||
|
||||
bool ksu_uid_should_umount(uid_t uid);
|
||||
struct root_profile *ksu_get_root_profile(uid_t uid);
|
||||
#endif
|
||||
@@ -1,343 +0,0 @@
|
||||
#include <linux/err.h>
|
||||
#include <linux/fs.h>
|
||||
#include <linux/gfp.h>
|
||||
#include <linux/kernel.h>
|
||||
#include <linux/slab.h>
|
||||
#include <linux/string.h>
|
||||
#include <linux/version.h>
|
||||
#ifdef CONFIG_KSU_DEBUG
|
||||
#include <linux/moduleparam.h>
|
||||
#endif
|
||||
#include <crypto/hash.h>
|
||||
#if LINUX_VERSION_CODE >= KERNEL_VERSION(5, 11, 0)
|
||||
#include <crypto/sha2.h>
|
||||
#else
|
||||
#include <crypto/sha.h>
|
||||
#endif
|
||||
#include "apk_sign.h"
|
||||
#include "klog.h" // IWYU pragma: keep
|
||||
#include "kernel_compat.h"
|
||||
#include "throne_tracker.h"
|
||||
|
||||
static unsigned int expected_manager_size = EXPECTED_MANAGER_SIZE;
|
||||
static char expected_manager_hash[SHA256_DIGEST_SIZE * 2 + 1] = EXPECTED_MANAGER_HASH;
|
||||
|
||||
struct sdesc {
|
||||
struct shash_desc shash;
|
||||
char ctx[];
|
||||
};
|
||||
|
||||
static struct sdesc *init_sdesc(struct crypto_shash *alg)
|
||||
{
|
||||
struct sdesc *sdesc;
|
||||
int size;
|
||||
|
||||
size = sizeof(struct shash_desc) + crypto_shash_descsize(alg);
|
||||
sdesc = kmalloc(size, GFP_KERNEL);
|
||||
if (!sdesc)
|
||||
return ERR_PTR(-ENOMEM);
|
||||
sdesc->shash.tfm = alg;
|
||||
return sdesc;
|
||||
}
|
||||
|
||||
static int calc_hash(struct crypto_shash *alg, const unsigned char *data,
|
||||
unsigned int datalen, unsigned char *digest)
|
||||
{
|
||||
struct sdesc *sdesc;
|
||||
int ret;
|
||||
|
||||
sdesc = init_sdesc(alg);
|
||||
if (IS_ERR(sdesc)) {
|
||||
pr_info("can't alloc sdesc\n");
|
||||
return PTR_ERR(sdesc);
|
||||
}
|
||||
|
||||
ret = crypto_shash_digest(&sdesc->shash, data, datalen, digest);
|
||||
kfree(sdesc);
|
||||
return ret;
|
||||
}
|
||||
|
||||
static int ksu_sha256(const unsigned char *data, unsigned int datalen,
|
||||
unsigned char *digest)
|
||||
{
|
||||
struct crypto_shash *alg;
|
||||
char *hash_alg_name = "sha256";
|
||||
int ret;
|
||||
|
||||
alg = crypto_alloc_shash(hash_alg_name, 0, 0);
|
||||
if (IS_ERR(alg)) {
|
||||
pr_info("can't alloc alg %s\n", hash_alg_name);
|
||||
return PTR_ERR(alg);
|
||||
}
|
||||
ret = calc_hash(alg, data, datalen, digest);
|
||||
crypto_free_shash(alg);
|
||||
return ret;
|
||||
}
|
||||
|
||||
static bool check_block(struct file *fp, u32 *size4, loff_t *pos, u32 *offset,
|
||||
unsigned expected_size, const char *expected_sha256)
|
||||
{
|
||||
ksu_kernel_read_compat(fp, size4, 0x4, pos); // signer-sequence length
|
||||
ksu_kernel_read_compat(fp, size4, 0x4, pos); // signer length
|
||||
ksu_kernel_read_compat(fp, size4, 0x4, pos); // signed data length
|
||||
|
||||
*offset += 0x4 * 3;
|
||||
|
||||
ksu_kernel_read_compat(fp, size4, 0x4, pos); // digests-sequence length
|
||||
|
||||
*pos += *size4;
|
||||
*offset += 0x4 + *size4;
|
||||
|
||||
ksu_kernel_read_compat(fp, size4, 0x4, pos); // certificates length
|
||||
ksu_kernel_read_compat(fp, size4, 0x4, pos); // certificate length
|
||||
*offset += 0x4 * 2;
|
||||
|
||||
if (*size4 == expected_size) {
|
||||
*offset += *size4;
|
||||
|
||||
#define CERT_MAX_LENGTH 1024
|
||||
char cert[CERT_MAX_LENGTH];
|
||||
if (*size4 > CERT_MAX_LENGTH) {
|
||||
pr_info("cert length overlimit\n");
|
||||
return false;
|
||||
}
|
||||
ksu_kernel_read_compat(fp, cert, *size4, pos);
|
||||
unsigned char digest[SHA256_DIGEST_SIZE];
|
||||
if (IS_ERR(ksu_sha256(cert, *size4, digest))) {
|
||||
pr_info("sha256 error\n");
|
||||
return false;
|
||||
}
|
||||
|
||||
char hash_str[SHA256_DIGEST_SIZE * 2 + 1];
|
||||
hash_str[SHA256_DIGEST_SIZE * 2] = '\0';
|
||||
|
||||
bin2hex(hash_str, digest, SHA256_DIGEST_SIZE);
|
||||
pr_info("sha256: %s, expected: %s\n", hash_str,
|
||||
expected_sha256);
|
||||
if (strcmp(expected_sha256, hash_str) == 0) {
|
||||
return true;
|
||||
}
|
||||
}
|
||||
return false;
|
||||
}
|
||||
|
||||
struct zip_entry_header {
|
||||
uint32_t signature;
|
||||
uint16_t version;
|
||||
uint16_t flags;
|
||||
uint16_t compression;
|
||||
uint16_t mod_time;
|
||||
uint16_t mod_date;
|
||||
uint32_t crc32;
|
||||
uint32_t compressed_size;
|
||||
uint32_t uncompressed_size;
|
||||
uint16_t file_name_length;
|
||||
uint16_t extra_field_length;
|
||||
} __attribute__((packed));
|
||||
|
||||
// This is a necessary but not sufficient condition, but it is enough for us
|
||||
static bool has_v1_signature_file(struct file *fp)
|
||||
{
|
||||
struct zip_entry_header header;
|
||||
const char MANIFEST[] = "META-INF/MANIFEST.MF";
|
||||
|
||||
loff_t pos = 0;
|
||||
|
||||
while (ksu_kernel_read_compat(fp, &header,
|
||||
sizeof(struct zip_entry_header), &pos) ==
|
||||
sizeof(struct zip_entry_header)) {
|
||||
if (header.signature != 0x04034b50) {
|
||||
// ZIP magic: 'PK'
|
||||
return false;
|
||||
}
|
||||
// Read the entry file name
|
||||
if (header.file_name_length == sizeof(MANIFEST) - 1) {
|
||||
char fileName[sizeof(MANIFEST)];
|
||||
ksu_kernel_read_compat(fp, fileName,
|
||||
header.file_name_length, &pos);
|
||||
fileName[header.file_name_length] = '\0';
|
||||
|
||||
// Check if the entry matches META-INF/MANIFEST.MF
|
||||
if (strncmp(MANIFEST, fileName, sizeof(MANIFEST) - 1) ==
|
||||
0) {
|
||||
return true;
|
||||
}
|
||||
} else {
|
||||
// Skip the entry file name
|
||||
pos += header.file_name_length;
|
||||
}
|
||||
|
||||
// Skip to the next entry
|
||||
pos += header.extra_field_length + header.compressed_size;
|
||||
}
|
||||
|
||||
return false;
|
||||
}
|
||||
|
||||
static __always_inline bool check_v2_signature(char *path,
|
||||
unsigned expected_size,
|
||||
const char *expected_sha256)
|
||||
{
|
||||
unsigned char buffer[0x11] = { 0 };
|
||||
u32 size4;
|
||||
u64 size8, size_of_block;
|
||||
|
||||
loff_t pos;
|
||||
|
||||
bool v2_signing_valid = false;
|
||||
int v2_signing_blocks = 0;
|
||||
bool v3_signing_exist = false;
|
||||
bool v3_1_signing_exist = false;
|
||||
|
||||
int i;
|
||||
struct file *fp = ksu_filp_open_compat(path, O_RDONLY, 0);
|
||||
if (IS_ERR(fp)) {
|
||||
pr_err("open %s error.\n", path);
|
||||
return false;
|
||||
}
|
||||
|
||||
// disable inotify for this file
|
||||
fp->f_mode |= FMODE_NONOTIFY;
|
||||
|
||||
// https://en.wikipedia.org/wiki/Zip_(file_format)#End_of_central_directory_record_(EOCD)
|
||||
for (i = 0;; ++i) {
|
||||
unsigned short n;
|
||||
pos = generic_file_llseek(fp, -i - 2, SEEK_END);
|
||||
ksu_kernel_read_compat(fp, &n, 2, &pos);
|
||||
if (n == i) {
|
||||
pos -= 22;
|
||||
ksu_kernel_read_compat(fp, &size4, 4, &pos);
|
||||
if ((size4 ^ 0xcafebabeu) == 0xccfbf1eeu) {
|
||||
break;
|
||||
}
|
||||
}
|
||||
if (i == 0xffff) {
|
||||
pr_info("error: cannot find eocd\n");
|
||||
goto clean;
|
||||
}
|
||||
}
|
||||
|
||||
pos += 12;
|
||||
// offset
|
||||
ksu_kernel_read_compat(fp, &size4, 0x4, &pos);
|
||||
pos = size4 - 0x18;
|
||||
|
||||
ksu_kernel_read_compat(fp, &size8, 0x8, &pos);
|
||||
ksu_kernel_read_compat(fp, buffer, 0x10, &pos);
|
||||
if (strcmp((char *)buffer, "APK Sig Block 42")) {
|
||||
goto clean;
|
||||
}
|
||||
|
||||
pos = size4 - (size8 + 0x8);
|
||||
ksu_kernel_read_compat(fp, &size_of_block, 0x8, &pos);
|
||||
if (size_of_block != size8) {
|
||||
goto clean;
|
||||
}
|
||||
|
||||
int loop_count = 0;
|
||||
while (loop_count++ < 10) {
|
||||
uint32_t id;
|
||||
uint32_t offset;
|
||||
ksu_kernel_read_compat(fp, &size8, 0x8,
|
||||
&pos); // sequence length
|
||||
if (size8 == size_of_block) {
|
||||
break;
|
||||
}
|
||||
ksu_kernel_read_compat(fp, &id, 0x4, &pos); // id
|
||||
offset = 4;
|
||||
if (id == 0x7109871au) {
|
||||
v2_signing_blocks++;
|
||||
v2_signing_valid =
|
||||
check_block(fp, &size4, &pos, &offset,
|
||||
expected_size, expected_sha256);
|
||||
} else if (id == 0xf05368c0u) {
|
||||
// http://aospxref.com/android-14.0.0_r2/xref/frameworks/base/core/java/android/util/apk/ApkSignatureSchemeV3Verifier.java#73
|
||||
v3_signing_exist = true;
|
||||
} else if (id == 0x1b93ad61u) {
|
||||
// http://aospxref.com/android-14.0.0_r2/xref/frameworks/base/core/java/android/util/apk/ApkSignatureSchemeV3Verifier.java#74
|
||||
v3_1_signing_exist = true;
|
||||
} else {
|
||||
#ifdef CONFIG_KSU_DEBUG
|
||||
pr_info("Unknown id: 0x%08x\n", id);
|
||||
#endif
|
||||
}
|
||||
pos += (size8 - offset);
|
||||
}
|
||||
|
||||
if (v2_signing_blocks != 1) {
|
||||
#ifdef CONFIG_KSU_DEBUG
|
||||
pr_err("Unexpected v2 signature count: %d\n",
|
||||
v2_signing_blocks);
|
||||
#endif
|
||||
v2_signing_valid = false;
|
||||
}
|
||||
|
||||
if (v2_signing_valid) {
|
||||
int has_v1_signing = has_v1_signature_file(fp);
|
||||
if (has_v1_signing) {
|
||||
pr_err("Unexpected v1 signature scheme found!\n");
|
||||
filp_close(fp, 0);
|
||||
return false;
|
||||
}
|
||||
}
|
||||
clean:
|
||||
filp_close(fp, 0);
|
||||
|
||||
if (v3_signing_exist || v3_1_signing_exist) {
|
||||
#ifdef CONFIG_KSU_DEBUG
|
||||
pr_err("Unexpected v3 signature scheme found!\n");
|
||||
#endif
|
||||
return false;
|
||||
}
|
||||
|
||||
return v2_signing_valid;
|
||||
}
|
||||
|
||||
#ifdef CONFIG_KSU_DEBUG
|
||||
|
||||
int ksu_debug_manager_uid = -1;
|
||||
|
||||
#include "manager.h"
|
||||
|
||||
static int set_expected_size(const char *val, const struct kernel_param *kp)
|
||||
{
|
||||
int rv = param_set_uint(val, kp);
|
||||
ksu_set_manager_uid(ksu_debug_manager_uid);
|
||||
pr_info("ksu_manager_uid set to %d\n", ksu_debug_manager_uid);
|
||||
return rv;
|
||||
}
|
||||
|
||||
static struct kernel_param_ops expected_size_ops = {
|
||||
.set = set_expected_size,
|
||||
.get = param_get_uint,
|
||||
};
|
||||
|
||||
module_param_cb(ksu_debug_manager_uid, &expected_size_ops,
|
||||
&ksu_debug_manager_uid, S_IRUSR | S_IWUSR);
|
||||
|
||||
#endif
|
||||
|
||||
bool is_manager_apk(char *path)
|
||||
{
|
||||
int tries = 0;
|
||||
|
||||
while (tries++ < 10) {
|
||||
if (!is_lock_held(path))
|
||||
break;
|
||||
|
||||
pr_info("%s: waiting for %s\n", __func__, path);
|
||||
msleep(100);
|
||||
}
|
||||
|
||||
// let it go, if retry fails, check_v2_signature will fail to open it anyway
|
||||
if (tries == 10) {
|
||||
pr_info("%s: timeout for %s\n", __func__, path);
|
||||
return false;
|
||||
}
|
||||
|
||||
// set debug info to print size and hash to kernel log
|
||||
pr_info("%s: expected size: %u, expected hash: %s\n",
|
||||
path, expected_manager_size, expected_manager_hash);
|
||||
|
||||
return check_v2_signature(path, expected_manager_size, expected_manager_hash);
|
||||
}
|
||||
@@ -1,8 +0,0 @@
|
||||
#ifndef __KSU_H_APK_V2_SIGN
|
||||
#define __KSU_H_APK_V2_SIGN
|
||||
|
||||
#include <linux/types.h>
|
||||
|
||||
bool is_manager_apk(char *path);
|
||||
|
||||
#endif
|
||||
@@ -1,92 +0,0 @@
|
||||
#ifndef __KSU_H_ARCH
|
||||
#define __KSU_H_ARCH
|
||||
|
||||
#include <linux/version.h>
|
||||
|
||||
#if defined(__aarch64__)
|
||||
|
||||
#define __PT_PARM1_REG regs[0]
|
||||
#define __PT_PARM2_REG regs[1]
|
||||
#define __PT_PARM3_REG regs[2]
|
||||
#define __PT_SYSCALL_PARM4_REG regs[3]
|
||||
#define __PT_CCALL_PARM4_REG regs[3]
|
||||
#define __PT_PARM5_REG regs[4]
|
||||
#define __PT_PARM6_REG regs[5]
|
||||
#define __PT_RET_REG regs[30]
|
||||
#define __PT_FP_REG regs[29] /* Works only with CONFIG_FRAME_POINTER */
|
||||
#define __PT_RC_REG regs[0]
|
||||
#define __PT_SP_REG sp
|
||||
#define __PT_IP_REG pc
|
||||
|
||||
#if LINUX_VERSION_CODE >= KERNEL_VERSION(4, 16, 0)
|
||||
#define PRCTL_SYMBOL "__arm64_sys_prctl"
|
||||
#define SYS_READ_SYMBOL "__arm64_sys_read"
|
||||
#define SYS_NEWFSTATAT_SYMBOL "__arm64_sys_newfstatat"
|
||||
#define SYS_FACCESSAT_SYMBOL "__arm64_sys_faccessat"
|
||||
#define SYS_EXECVE_SYMBOL "__arm64_sys_execve"
|
||||
#else
|
||||
#define PRCTL_SYMBOL "sys_prctl"
|
||||
#define SYS_READ_SYMBOL "sys_read"
|
||||
#define SYS_NEWFSTATAT_SYMBOL "sys_newfstatat"
|
||||
#define SYS_FACCESSAT_SYMBOL "sys_faccessat"
|
||||
#define SYS_EXECVE_SYMBOL "sys_execve"
|
||||
#endif
|
||||
|
||||
#elif defined(__x86_64__)
|
||||
|
||||
#define __PT_PARM1_REG di
|
||||
#define __PT_PARM2_REG si
|
||||
#define __PT_PARM3_REG dx
|
||||
/* syscall uses r10 for PARM4 */
|
||||
#define __PT_SYSCALL_PARM4_REG r10
|
||||
#define __PT_CCALL_PARM4_REG cx
|
||||
#define __PT_PARM5_REG r8
|
||||
#define __PT_PARM6_REG r9
|
||||
#define __PT_RET_REG sp
|
||||
#define __PT_FP_REG bp
|
||||
#define __PT_RC_REG ax
|
||||
#define __PT_SP_REG sp
|
||||
#define __PT_IP_REG ip
|
||||
#if LINUX_VERSION_CODE >= KERNEL_VERSION(4, 16, 0)
|
||||
#define PRCTL_SYMBOL "__x64_sys_prctl"
|
||||
#define SYS_READ_SYMBOL "__x64_sys_read"
|
||||
#define SYS_NEWFSTATAT_SYMBOL "__x64_sys_newfstatat"
|
||||
#define SYS_FACCESSAT_SYMBOL "__x64_sys_faccessat"
|
||||
#define SYS_EXECVE_SYMBOL "__x64_sys_execve"
|
||||
#else
|
||||
#define PRCTL_SYMBOL "sys_prctl"
|
||||
#define SYS_READ_SYMBOL "sys_read"
|
||||
#define SYS_NEWFSTATAT_SYMBOL "sys_newfstatat"
|
||||
#define SYS_FACCESSAT_SYMBOL "sys_faccessat"
|
||||
#define SYS_EXECVE_SYMBOL "sys_execve"
|
||||
#endif
|
||||
|
||||
#else
|
||||
#error "Unsupported arch"
|
||||
#endif
|
||||
|
||||
/* allow some architecutres to override `struct pt_regs` */
|
||||
#ifndef __PT_REGS_CAST
|
||||
#define __PT_REGS_CAST(x) (x)
|
||||
#endif
|
||||
|
||||
#define PT_REGS_PARM1(x) (__PT_REGS_CAST(x)->__PT_PARM1_REG)
|
||||
#define PT_REGS_PARM2(x) (__PT_REGS_CAST(x)->__PT_PARM2_REG)
|
||||
#define PT_REGS_PARM3(x) (__PT_REGS_CAST(x)->__PT_PARM3_REG)
|
||||
#define PT_REGS_SYSCALL_PARM4(x) (__PT_REGS_CAST(x)->__PT_SYSCALL_PARM4_REG)
|
||||
#define PT_REGS_CCALL_PARM4(x) (__PT_REGS_CAST(x)->__PT_CCALL_PARM4_REG)
|
||||
#define PT_REGS_PARM5(x) (__PT_REGS_CAST(x)->__PT_PARM5_REG)
|
||||
#define PT_REGS_PARM6(x) (__PT_REGS_CAST(x)->__PT_PARM6_REG)
|
||||
#define PT_REGS_RET(x) (__PT_REGS_CAST(x)->__PT_RET_REG)
|
||||
#define PT_REGS_FP(x) (__PT_REGS_CAST(x)->__PT_FP_REG)
|
||||
#define PT_REGS_RC(x) (__PT_REGS_CAST(x)->__PT_RC_REG)
|
||||
#define PT_REGS_SP(x) (__PT_REGS_CAST(x)->__PT_SP_REG)
|
||||
#define PT_REGS_IP(x) (__PT_REGS_CAST(x)->__PT_IP_REG)
|
||||
|
||||
#if LINUX_VERSION_CODE >= KERNEL_VERSION(4, 16, 0)
|
||||
#define PT_REAL_REGS(regs) ((struct pt_regs *)PT_REGS_PARM1(regs))
|
||||
#else
|
||||
#define PT_REAL_REGS(regs) ((regs))
|
||||
#endif
|
||||
|
||||
#endif
|
||||
File diff suppressed because it is too large
Load Diff
@@ -1,9 +0,0 @@
|
||||
#ifndef __KSU_H_KSU_CORE
|
||||
#define __KSU_H_KSU_CORE
|
||||
|
||||
#include <linux/init.h>
|
||||
|
||||
void __init ksu_core_init(void);
|
||||
void ksu_core_exit(void);
|
||||
|
||||
#endif
|
||||
@@ -1,5 +0,0 @@
|
||||
// WARNING: THIS IS A STUB FILE
|
||||
// This file will be regenerated by CI
|
||||
|
||||
unsigned int ksud_size = 0;
|
||||
const char ksud[0] = {};
|
||||
@@ -1,2 +0,0 @@
|
||||
register_kprobe
|
||||
unregister_kprobe
|
||||
@@ -1,28 +0,0 @@
|
||||
#ifndef __KSU_H_KSHOOK
|
||||
#define __KSU_H_KSHOOK
|
||||
|
||||
#include <linux/fs.h>
|
||||
#include <linux/types.h>
|
||||
|
||||
// For sucompat
|
||||
|
||||
int ksu_handle_faccessat(int *dfd, const char __user **filename_user, int *mode,
|
||||
int *flags);
|
||||
|
||||
int ksu_handle_stat(int *dfd, const char __user **filename_user, int *flags);
|
||||
|
||||
// For ksud
|
||||
|
||||
int ksu_handle_vfs_read(struct file **file_ptr, char __user **buf_ptr,
|
||||
size_t *count_ptr, loff_t **pos);
|
||||
|
||||
// For ksud and sucompat
|
||||
|
||||
int ksu_handle_execveat(int *fd, struct filename **filename_ptr, void *argv,
|
||||
void *envp, int *flags);
|
||||
|
||||
// For volume button
|
||||
int ksu_handle_input_handle_event(unsigned int *type, unsigned int *code,
|
||||
int *value);
|
||||
|
||||
#endif
|
||||
@@ -1,198 +0,0 @@
|
||||
#include <linux/version.h>
|
||||
#include <linux/fs.h>
|
||||
#include <linux/nsproxy.h>
|
||||
#if LINUX_VERSION_CODE >= KERNEL_VERSION(4, 10, 0)
|
||||
#include <linux/sched/task.h>
|
||||
#else
|
||||
#include <linux/sched.h>
|
||||
#endif
|
||||
#include <linux/uaccess.h>
|
||||
#include "klog.h" // IWYU pragma: keep
|
||||
#include "kernel_compat.h" // Add check Huawei Device
|
||||
#if LINUX_VERSION_CODE < KERNEL_VERSION(4, 10, 0) || defined(CONFIG_IS_HW_HISI) || defined(CONFIG_KSU_ALLOWLIST_WORKAROUND)
|
||||
#include <linux/key.h>
|
||||
#include <linux/errno.h>
|
||||
#include <linux/cred.h>
|
||||
struct key *init_session_keyring = NULL;
|
||||
|
||||
static inline int install_session_keyring(struct key *keyring)
|
||||
{
|
||||
struct cred *new;
|
||||
int ret;
|
||||
|
||||
new = prepare_creds();
|
||||
if (!new)
|
||||
return -ENOMEM;
|
||||
|
||||
ret = install_session_keyring_to_cred(new, keyring);
|
||||
if (ret < 0) {
|
||||
abort_creds(new);
|
||||
return ret;
|
||||
}
|
||||
|
||||
return commit_creds(new);
|
||||
}
|
||||
#endif
|
||||
|
||||
extern struct task_struct init_task;
|
||||
|
||||
// mnt_ns context switch for environment that android_init->nsproxy->mnt_ns != init_task.nsproxy->mnt_ns, such as WSA
|
||||
struct ksu_ns_fs_saved {
|
||||
struct nsproxy *ns;
|
||||
struct fs_struct *fs;
|
||||
};
|
||||
|
||||
static void ksu_save_ns_fs(struct ksu_ns_fs_saved *ns_fs_saved)
|
||||
{
|
||||
ns_fs_saved->ns = current->nsproxy;
|
||||
ns_fs_saved->fs = current->fs;
|
||||
}
|
||||
|
||||
static void ksu_load_ns_fs(struct ksu_ns_fs_saved *ns_fs_saved)
|
||||
{
|
||||
current->nsproxy = ns_fs_saved->ns;
|
||||
current->fs = ns_fs_saved->fs;
|
||||
}
|
||||
|
||||
static bool android_context_saved_checked = false;
|
||||
static bool android_context_saved_enabled = false;
|
||||
static struct ksu_ns_fs_saved android_context_saved;
|
||||
|
||||
void ksu_android_ns_fs_check()
|
||||
{
|
||||
if (android_context_saved_checked)
|
||||
return;
|
||||
android_context_saved_checked = true;
|
||||
task_lock(current);
|
||||
if (current->nsproxy && current->fs &&
|
||||
current->nsproxy->mnt_ns != init_task.nsproxy->mnt_ns) {
|
||||
android_context_saved_enabled = true;
|
||||
pr_info("android context saved enabled due to init mnt_ns(%p) != android mnt_ns(%p)\n",
|
||||
current->nsproxy->mnt_ns, init_task.nsproxy->mnt_ns);
|
||||
ksu_save_ns_fs(&android_context_saved);
|
||||
} else {
|
||||
pr_info("android context saved disabled\n");
|
||||
}
|
||||
task_unlock(current);
|
||||
}
|
||||
|
||||
struct file *ksu_filp_open_compat(const char *filename, int flags, umode_t mode)
|
||||
{
|
||||
#if LINUX_VERSION_CODE < KERNEL_VERSION(4, 10, 0) || defined(CONFIG_IS_HW_HISI) || defined(CONFIG_KSU_ALLOWLIST_WORKAROUND)
|
||||
if (init_session_keyring != NULL && !current_cred()->session_keyring &&
|
||||
(current->flags & PF_WQ_WORKER)) {
|
||||
pr_info("installing init session keyring for older kernel\n");
|
||||
install_session_keyring(init_session_keyring);
|
||||
}
|
||||
#endif
|
||||
// switch mnt_ns even if current is not wq_worker, to ensure what we open is the correct file in android mnt_ns, rather than user created mnt_ns
|
||||
struct ksu_ns_fs_saved saved;
|
||||
if (android_context_saved_enabled) {
|
||||
pr_info("start switch current nsproxy and fs to android context\n");
|
||||
task_lock(current);
|
||||
ksu_save_ns_fs(&saved);
|
||||
ksu_load_ns_fs(&android_context_saved);
|
||||
task_unlock(current);
|
||||
}
|
||||
struct file *fp = filp_open(filename, flags, mode);
|
||||
if (android_context_saved_enabled) {
|
||||
task_lock(current);
|
||||
ksu_load_ns_fs(&saved);
|
||||
task_unlock(current);
|
||||
pr_info("switch current nsproxy and fs back to saved successfully\n");
|
||||
}
|
||||
return fp;
|
||||
}
|
||||
|
||||
ssize_t ksu_kernel_read_compat(struct file *p, void *buf, size_t count,
|
||||
loff_t *pos)
|
||||
{
|
||||
#if LINUX_VERSION_CODE >= KERNEL_VERSION(4, 14, 0) || defined(KSU_KERNEL_READ)
|
||||
return kernel_read(p, buf, count, pos);
|
||||
#else
|
||||
loff_t offset = pos ? *pos : 0;
|
||||
ssize_t result = kernel_read(p, offset, (char *)buf, count);
|
||||
if (pos && result > 0) {
|
||||
*pos = offset + result;
|
||||
}
|
||||
return result;
|
||||
#endif
|
||||
}
|
||||
|
||||
ssize_t ksu_kernel_write_compat(struct file *p, const void *buf, size_t count,
|
||||
loff_t *pos)
|
||||
{
|
||||
#if LINUX_VERSION_CODE >= KERNEL_VERSION(4, 14, 0) || defined(KSU_KERNEL_WRITE)
|
||||
return kernel_write(p, buf, count, pos);
|
||||
#else
|
||||
loff_t offset = pos ? *pos : 0;
|
||||
ssize_t result = kernel_write(p, buf, count, offset);
|
||||
if (pos && result > 0) {
|
||||
*pos = offset + result;
|
||||
}
|
||||
return result;
|
||||
#endif
|
||||
}
|
||||
|
||||
#if LINUX_VERSION_CODE >= KERNEL_VERSION(5, 8, 0) || defined(KSU_STRNCPY_FROM_USER_NOFAULT)
|
||||
long ksu_strncpy_from_user_nofault(char *dst, const void __user *unsafe_addr,
|
||||
long count)
|
||||
{
|
||||
return strncpy_from_user_nofault(dst, unsafe_addr, count);
|
||||
}
|
||||
#elif LINUX_VERSION_CODE >= KERNEL_VERSION(5, 3, 0)
|
||||
long ksu_strncpy_from_user_nofault(char *dst, const void __user *unsafe_addr,
|
||||
long count)
|
||||
{
|
||||
return strncpy_from_unsafe_user(dst, unsafe_addr, count);
|
||||
}
|
||||
#else
|
||||
// Copied from: https://elixir.bootlin.com/linux/v4.9.337/source/mm/maccess.c#L201
|
||||
long ksu_strncpy_from_user_nofault(char *dst, const void __user *unsafe_addr,
|
||||
long count)
|
||||
{
|
||||
mm_segment_t old_fs = get_fs();
|
||||
long ret;
|
||||
|
||||
if (unlikely(count <= 0))
|
||||
return 0;
|
||||
|
||||
set_fs(USER_DS);
|
||||
pagefault_disable();
|
||||
ret = strncpy_from_user(dst, unsafe_addr, count);
|
||||
pagefault_enable();
|
||||
set_fs(old_fs);
|
||||
|
||||
if (ret >= count) {
|
||||
ret = count;
|
||||
dst[ret - 1] = '\0';
|
||||
} else if (ret > 0) {
|
||||
ret++;
|
||||
}
|
||||
|
||||
return ret;
|
||||
}
|
||||
#endif
|
||||
|
||||
static inline int ksu_access_ok(const void *addr, unsigned long size)
|
||||
{
|
||||
#if LINUX_VERSION_CODE >= KERNEL_VERSION(5,0,0)
|
||||
return access_ok(addr, size);
|
||||
#else
|
||||
return access_ok(VERIFY_READ, addr, size);
|
||||
#endif
|
||||
}
|
||||
|
||||
long ksu_strncpy_from_user_retry(char *dst, const void __user *unsafe_addr,
|
||||
long count)
|
||||
{
|
||||
long ret = ksu_strncpy_from_user_nofault(dst, unsafe_addr, count);
|
||||
if (likely(ret >= 0))
|
||||
return ret;
|
||||
|
||||
// we faulted! fallback to slow path
|
||||
if (unlikely(!ksu_access_ok(unsafe_addr, count)))
|
||||
return -EFAULT;
|
||||
|
||||
return strncpy_from_user(dst, unsafe_addr, count);
|
||||
}
|
||||
@@ -1,42 +0,0 @@
|
||||
#ifndef __KSU_H_KERNEL_COMPAT
|
||||
#define __KSU_H_KERNEL_COMPAT
|
||||
|
||||
#include <linux/fs.h>
|
||||
#include <linux/version.h>
|
||||
#include "ss/policydb.h"
|
||||
#include "linux/key.h"
|
||||
|
||||
/*
|
||||
* Adapt to Huawei HISI kernel without affecting other kernels ,
|
||||
* Huawei Hisi Kernel EBITMAP Enable or Disable Flag ,
|
||||
* From ss/ebitmap.h
|
||||
*/
|
||||
#if (LINUX_VERSION_CODE >= KERNEL_VERSION(4, 9, 0)) && \
|
||||
(LINUX_VERSION_CODE < KERNEL_VERSION(4, 10, 0)) || \
|
||||
(LINUX_VERSION_CODE >= KERNEL_VERSION(4, 14, 0)) && \
|
||||
(LINUX_VERSION_CODE < KERNEL_VERSION(4, 15, 0))
|
||||
#ifdef HISI_SELINUX_EBITMAP_RO
|
||||
#define CONFIG_IS_HW_HISI
|
||||
#endif
|
||||
#endif
|
||||
|
||||
extern long ksu_strncpy_from_user_nofault(char *dst,
|
||||
const void __user *unsafe_addr,
|
||||
long count);
|
||||
extern long ksu_strncpy_from_user_retry(char *dst,
|
||||
const void __user *unsafe_addr,
|
||||
long count);
|
||||
|
||||
#if LINUX_VERSION_CODE < KERNEL_VERSION(4, 10, 0) || defined(CONFIG_IS_HW_HISI) || defined(CONFIG_KSU_ALLOWLIST_WORKAROUND)
|
||||
extern struct key *init_session_keyring;
|
||||
#endif
|
||||
|
||||
extern void ksu_android_ns_fs_check();
|
||||
extern struct file *ksu_filp_open_compat(const char *filename, int flags,
|
||||
umode_t mode);
|
||||
extern ssize_t ksu_kernel_read_compat(struct file *p, void *buf, size_t count,
|
||||
loff_t *pos);
|
||||
extern ssize_t ksu_kernel_write_compat(struct file *p, const void *buf,
|
||||
size_t count, loff_t *pos);
|
||||
|
||||
#endif
|
||||
@@ -1,11 +0,0 @@
|
||||
#ifndef __KSU_H_KLOG
|
||||
#define __KSU_H_KLOG
|
||||
|
||||
#include <linux/printk.h>
|
||||
|
||||
#ifdef pr_fmt
|
||||
#undef pr_fmt
|
||||
#define pr_fmt(fmt) "KernelSU: " fmt
|
||||
#endif
|
||||
|
||||
#endif
|
||||
@@ -1,100 +0,0 @@
|
||||
#include <linux/export.h>
|
||||
#include <linux/fs.h>
|
||||
#include <linux/kobject.h>
|
||||
#include <linux/module.h>
|
||||
#include <linux/workqueue.h>
|
||||
|
||||
#include "allowlist.h"
|
||||
#include "arch.h"
|
||||
#include "core_hook.h"
|
||||
#include "klog.h" // IWYU pragma: keep
|
||||
#include "ksu.h"
|
||||
#include "throne_tracker.h"
|
||||
|
||||
static struct workqueue_struct *ksu_workqueue;
|
||||
|
||||
bool ksu_queue_work(struct work_struct *work)
|
||||
{
|
||||
return queue_work(ksu_workqueue, work);
|
||||
}
|
||||
|
||||
extern int ksu_handle_execveat_sucompat(int *fd, struct filename **filename_ptr,
|
||||
void *argv, void *envp, int *flags);
|
||||
|
||||
extern int ksu_handle_execveat_ksud(int *fd, struct filename **filename_ptr,
|
||||
void *argv, void *envp, int *flags);
|
||||
|
||||
int ksu_handle_execveat(int *fd, struct filename **filename_ptr, void *argv,
|
||||
void *envp, int *flags)
|
||||
{
|
||||
ksu_handle_execveat_ksud(fd, filename_ptr, argv, envp, flags);
|
||||
return ksu_handle_execveat_sucompat(fd, filename_ptr, argv, envp,
|
||||
flags);
|
||||
}
|
||||
|
||||
extern void ksu_sucompat_init();
|
||||
extern void ksu_sucompat_exit();
|
||||
extern void ksu_ksud_init();
|
||||
extern void ksu_ksud_exit();
|
||||
|
||||
int __init kernelsu_init(void)
|
||||
{
|
||||
#ifdef CONFIG_KSU_DEBUG
|
||||
pr_alert("*************************************************************");
|
||||
pr_alert("** NOTICE NOTICE NOTICE NOTICE NOTICE NOTICE NOTICE **");
|
||||
pr_alert("** **");
|
||||
pr_alert("** You are running KernelSU in DEBUG mode **");
|
||||
pr_alert("** **");
|
||||
pr_alert("** NOTICE NOTICE NOTICE NOTICE NOTICE NOTICE NOTICE **");
|
||||
pr_alert("*************************************************************");
|
||||
#endif
|
||||
|
||||
ksu_core_init();
|
||||
|
||||
ksu_workqueue = alloc_ordered_workqueue("kernelsu_work_queue", 0);
|
||||
|
||||
ksu_allowlist_init();
|
||||
|
||||
ksu_throne_tracker_init();
|
||||
|
||||
#ifdef CONFIG_KSU_KPROBES_HOOK
|
||||
ksu_sucompat_init();
|
||||
ksu_ksud_init();
|
||||
#else
|
||||
pr_alert("KPROBES is disabled, KernelSU may not work, please check https://kernelsu.org/guide/how-to-integrate-for-non-gki.html");
|
||||
#endif
|
||||
|
||||
#ifdef MODULE
|
||||
#ifndef CONFIG_KSU_DEBUG
|
||||
kobject_del(&THIS_MODULE->mkobj.kobj);
|
||||
#endif
|
||||
#endif
|
||||
return 0;
|
||||
}
|
||||
|
||||
void kernelsu_exit(void)
|
||||
{
|
||||
ksu_allowlist_exit();
|
||||
|
||||
ksu_throne_tracker_exit();
|
||||
|
||||
destroy_workqueue(ksu_workqueue);
|
||||
|
||||
#ifdef CONFIG_KSU_KPROBES_HOOK
|
||||
ksu_ksud_exit();
|
||||
ksu_sucompat_exit();
|
||||
#endif
|
||||
|
||||
ksu_core_exit();
|
||||
}
|
||||
|
||||
module_init(kernelsu_init);
|
||||
module_exit(kernelsu_exit);
|
||||
|
||||
MODULE_LICENSE("GPL");
|
||||
MODULE_AUTHOR("weishu");
|
||||
MODULE_DESCRIPTION("Android KernelSU");
|
||||
|
||||
#if LINUX_VERSION_CODE >= KERNEL_VERSION(5, 0, 0)
|
||||
MODULE_IMPORT_NS(VFS_internal_I_am_really_a_filesystem_and_am_NOT_a_driver);
|
||||
#endif
|
||||
@@ -1,104 +0,0 @@
|
||||
#ifndef __KSU_H_KSU
|
||||
#define __KSU_H_KSU
|
||||
|
||||
#include <linux/types.h>
|
||||
#include <linux/workqueue.h>
|
||||
|
||||
#define KERNEL_SU_VERSION KSU_VERSION
|
||||
#define KERNEL_SU_OPTION 0xDEADBEEF
|
||||
|
||||
#define CMD_GRANT_ROOT 0
|
||||
#define CMD_BECOME_MANAGER 1
|
||||
#define CMD_GET_VERSION 2
|
||||
#define CMD_ALLOW_SU 3
|
||||
#define CMD_DENY_SU 4
|
||||
#define CMD_GET_ALLOW_LIST 5
|
||||
#define CMD_GET_DENY_LIST 6
|
||||
#define CMD_REPORT_EVENT 7
|
||||
#define CMD_SET_SEPOLICY 8
|
||||
#define CMD_CHECK_SAFEMODE 9
|
||||
#define CMD_GET_APP_PROFILE 10
|
||||
#define CMD_SET_APP_PROFILE 11
|
||||
#define CMD_UID_GRANTED_ROOT 12
|
||||
#define CMD_UID_SHOULD_UMOUNT 13
|
||||
#define CMD_IS_SU_ENABLED 14
|
||||
#define CMD_ENABLE_SU 15
|
||||
#define CMD_GET_MANAGER_UID 16
|
||||
|
||||
#define CMD_HOOK_MODE 0xC0DEAD1A
|
||||
|
||||
#define EVENT_POST_FS_DATA 1
|
||||
#define EVENT_BOOT_COMPLETED 2
|
||||
#define EVENT_MODULE_MOUNTED 3
|
||||
|
||||
#define KSU_APP_PROFILE_VER 2
|
||||
#define KSU_MAX_PACKAGE_NAME 256
|
||||
// NGROUPS_MAX for Linux is 65535 generally, but we only supports 32 groups.
|
||||
#define KSU_MAX_GROUPS 32
|
||||
#define KSU_SELINUX_DOMAIN 64
|
||||
|
||||
struct root_profile {
|
||||
int32_t uid;
|
||||
int32_t gid;
|
||||
|
||||
int32_t groups_count;
|
||||
int32_t groups[KSU_MAX_GROUPS];
|
||||
|
||||
// kernel_cap_t is u32[2] for capabilities v3
|
||||
struct {
|
||||
u64 effective;
|
||||
u64 permitted;
|
||||
u64 inheritable;
|
||||
} capabilities;
|
||||
|
||||
char selinux_domain[KSU_SELINUX_DOMAIN];
|
||||
|
||||
int32_t namespaces;
|
||||
};
|
||||
|
||||
struct non_root_profile {
|
||||
bool umount_modules;
|
||||
};
|
||||
|
||||
struct app_profile {
|
||||
// It may be utilized for backward compatibility, although we have never explicitly made any promises regarding this.
|
||||
u32 version;
|
||||
|
||||
// this is usually the package of the app, but can be other value for special apps
|
||||
char key[KSU_MAX_PACKAGE_NAME];
|
||||
int32_t current_uid;
|
||||
bool allow_su;
|
||||
|
||||
union {
|
||||
struct {
|
||||
bool use_default;
|
||||
char template_name[KSU_MAX_PACKAGE_NAME];
|
||||
|
||||
struct root_profile profile;
|
||||
} rp_config;
|
||||
|
||||
struct {
|
||||
bool use_default;
|
||||
|
||||
struct non_root_profile profile;
|
||||
} nrp_config;
|
||||
};
|
||||
};
|
||||
|
||||
bool ksu_queue_work(struct work_struct *work);
|
||||
|
||||
static inline int startswith(char *s, char *prefix)
|
||||
{
|
||||
return strncmp(s, prefix, strlen(prefix));
|
||||
}
|
||||
|
||||
static inline int endswith(const char *s, const char *t)
|
||||
{
|
||||
size_t slen = strlen(s);
|
||||
size_t tlen = strlen(t);
|
||||
if (tlen > slen)
|
||||
return 1;
|
||||
return strcmp(s + slen - tlen, t);
|
||||
}
|
||||
|
||||
#endif
|
||||
@@ -1,729 +0,0 @@
|
||||
#include <asm/current.h>
|
||||
#include <linux/compat.h>
|
||||
#include <linux/cred.h>
|
||||
#include <linux/dcache.h>
|
||||
#include <linux/err.h>
|
||||
#include <linux/file.h>
|
||||
#include <linux/fs.h>
|
||||
#include <linux/version.h>
|
||||
#if LINUX_VERSION_CODE >= KERNEL_VERSION(4, 4, 0)
|
||||
#include <linux/input-event-codes.h>
|
||||
#else
|
||||
#include <uapi/linux/input.h>
|
||||
#endif
|
||||
#if LINUX_VERSION_CODE < KERNEL_VERSION(4, 1, 0)
|
||||
#include <linux/aio.h>
|
||||
#endif
|
||||
#include <linux/kprobes.h>
|
||||
#include <linux/printk.h>
|
||||
#include <linux/types.h>
|
||||
#include <linux/uaccess.h>
|
||||
#include <linux/workqueue.h>
|
||||
|
||||
#include "allowlist.h"
|
||||
#include "arch.h"
|
||||
#include "klog.h" // IWYU pragma: keep
|
||||
#include "ksud.h"
|
||||
#include "kernel_compat.h"
|
||||
#include "selinux/selinux.h"
|
||||
|
||||
static const char KERNEL_SU_RC[] =
|
||||
"\n"
|
||||
|
||||
"on post-fs-data\n"
|
||||
" start logd\n"
|
||||
// We should wait for the post-fs-data finish
|
||||
" exec u:r:su:s0 root -- " KSUD_PATH " post-fs-data\n"
|
||||
"\n"
|
||||
|
||||
"on nonencrypted\n"
|
||||
" exec u:r:su:s0 root -- " KSUD_PATH " services\n"
|
||||
"\n"
|
||||
|
||||
"on property:vold.decrypt=trigger_restart_framework\n"
|
||||
" exec u:r:su:s0 root -- " KSUD_PATH " services\n"
|
||||
"\n"
|
||||
|
||||
"on property:sys.boot_completed=1\n"
|
||||
" exec u:r:su:s0 root -- " KSUD_PATH " boot-completed\n"
|
||||
"\n"
|
||||
|
||||
"\n";
|
||||
|
||||
static void stop_vfs_read_hook();
|
||||
static void stop_execve_hook();
|
||||
static void stop_input_hook();
|
||||
|
||||
#ifdef CONFIG_KSU_KPROBES_HOOK
|
||||
static struct work_struct stop_vfs_read_work;
|
||||
static struct work_struct stop_execve_hook_work;
|
||||
static struct work_struct stop_input_hook_work;
|
||||
#else
|
||||
bool ksu_vfs_read_hook __read_mostly = true;
|
||||
bool ksu_execveat_hook __read_mostly = true;
|
||||
bool ksu_input_hook __read_mostly = true;
|
||||
#endif
|
||||
|
||||
u32 ksu_devpts_sid;
|
||||
|
||||
#ifdef CONFIG_COMPAT
|
||||
bool ksu_is_compat __read_mostly = false;
|
||||
#endif
|
||||
|
||||
void on_post_fs_data(void)
|
||||
{
|
||||
static bool done = false;
|
||||
if (done) {
|
||||
pr_info("on_post_fs_data already done\n");
|
||||
return;
|
||||
}
|
||||
done = true;
|
||||
pr_info("on_post_fs_data!\n");
|
||||
ksu_load_allow_list();
|
||||
// sanity check, this may influence the performance
|
||||
stop_input_hook();
|
||||
|
||||
ksu_devpts_sid = ksu_get_devpts_sid();
|
||||
pr_info("devpts sid: %d\n", ksu_devpts_sid);
|
||||
}
|
||||
|
||||
#define MAX_ARG_STRINGS 0x7FFFFFFF
|
||||
struct user_arg_ptr {
|
||||
#ifdef CONFIG_COMPAT
|
||||
bool is_compat;
|
||||
#endif
|
||||
union {
|
||||
const char __user *const __user *native;
|
||||
#ifdef CONFIG_COMPAT
|
||||
const compat_uptr_t __user *compat;
|
||||
#endif
|
||||
} ptr;
|
||||
};
|
||||
|
||||
static const char __user *get_user_arg_ptr(struct user_arg_ptr argv, int nr)
|
||||
{
|
||||
const char __user *native;
|
||||
|
||||
#ifdef CONFIG_COMPAT
|
||||
if (unlikely(argv.is_compat)) {
|
||||
compat_uptr_t compat;
|
||||
|
||||
if (get_user(compat, argv.ptr.compat + nr))
|
||||
return ERR_PTR(-EFAULT);
|
||||
|
||||
ksu_is_compat = true;
|
||||
return compat_ptr(compat);
|
||||
}
|
||||
#endif
|
||||
|
||||
if (get_user(native, argv.ptr.native + nr))
|
||||
return ERR_PTR(-EFAULT);
|
||||
|
||||
return native;
|
||||
}
|
||||
|
||||
/*
|
||||
* count() counts the number of strings in array ARGV.
|
||||
*/
|
||||
|
||||
/*
|
||||
* Make sure old GCC compiler can use __maybe_unused,
|
||||
* Test passed in 4.4.x ~ 4.9.x when use GCC.
|
||||
*/
|
||||
|
||||
static int __maybe_unused count(struct user_arg_ptr argv, int max)
|
||||
{
|
||||
int i = 0;
|
||||
|
||||
if (argv.ptr.native != NULL) {
|
||||
for (;;) {
|
||||
const char __user *p = get_user_arg_ptr(argv, i);
|
||||
|
||||
if (!p)
|
||||
break;
|
||||
|
||||
if (IS_ERR(p))
|
||||
return -EFAULT;
|
||||
|
||||
if (i >= max)
|
||||
return -E2BIG;
|
||||
++i;
|
||||
|
||||
if (fatal_signal_pending(current))
|
||||
return -ERESTARTNOHAND;
|
||||
cond_resched();
|
||||
}
|
||||
}
|
||||
return i;
|
||||
}
|
||||
|
||||
// IMPORTANT NOTE: the call from execve_handler_pre WON'T provided correct value for envp and flags in GKI version
|
||||
int ksu_handle_execveat_ksud(int *fd, struct filename **filename_ptr,
|
||||
struct user_arg_ptr *argv,
|
||||
struct user_arg_ptr *envp, int *flags)
|
||||
{
|
||||
#ifndef CONFIG_KSU_KPROBES_HOOK
|
||||
if (!ksu_execveat_hook) {
|
||||
return 0;
|
||||
}
|
||||
#endif
|
||||
struct filename *filename;
|
||||
|
||||
static const char app_process[] = "/system/bin/app_process";
|
||||
static bool first_app_process = true;
|
||||
|
||||
/* This applies to versions Android 10+ */
|
||||
static const char system_bin_init[] = "/system/bin/init";
|
||||
/* This applies to versions between Android 6 ~ 9 */
|
||||
static const char old_system_init[] = "/init";
|
||||
static bool init_second_stage_executed = false;
|
||||
|
||||
if (!filename_ptr)
|
||||
return 0;
|
||||
|
||||
filename = *filename_ptr;
|
||||
if (IS_ERR(filename)) {
|
||||
return 0;
|
||||
}
|
||||
|
||||
if (unlikely(!memcmp(filename->name, system_bin_init,
|
||||
sizeof(system_bin_init) - 1) &&
|
||||
argv)) {
|
||||
// /system/bin/init executed
|
||||
int argc = count(*argv, MAX_ARG_STRINGS);
|
||||
pr_info("/system/bin/init argc: %d\n", argc);
|
||||
if (argc > 1 && !init_second_stage_executed) {
|
||||
const char __user *p = get_user_arg_ptr(*argv, 1);
|
||||
if (p && !IS_ERR(p)) {
|
||||
char first_arg[16];
|
||||
ksu_strncpy_from_user_retry(
|
||||
first_arg, p, sizeof(first_arg));
|
||||
pr_info("/system/bin/init first arg: %s\n",
|
||||
first_arg);
|
||||
if (!strcmp(first_arg, "second_stage")) {
|
||||
pr_info("/system/bin/init second_stage executed\n");
|
||||
apply_kernelsu_rules();
|
||||
init_second_stage_executed = true;
|
||||
ksu_android_ns_fs_check();
|
||||
}
|
||||
} else {
|
||||
pr_err("/system/bin/init parse args err!\n");
|
||||
}
|
||||
}
|
||||
} else if (unlikely(!memcmp(filename->name, old_system_init,
|
||||
sizeof(old_system_init) - 1) &&
|
||||
argv)) {
|
||||
// /init executed
|
||||
int argc = count(*argv, MAX_ARG_STRINGS);
|
||||
pr_info("/init argc: %d\n", argc);
|
||||
if (argc > 1 && !init_second_stage_executed) {
|
||||
/* This applies to versions between Android 6 ~ 7 */
|
||||
const char __user *p = get_user_arg_ptr(*argv, 1);
|
||||
if (p && !IS_ERR(p)) {
|
||||
char first_arg[16];
|
||||
ksu_strncpy_from_user_retry(
|
||||
first_arg, p, sizeof(first_arg));
|
||||
pr_info("/init first arg: %s\n", first_arg);
|
||||
if (!strcmp(first_arg, "--second-stage")) {
|
||||
pr_info("/init second_stage executed\n");
|
||||
apply_kernelsu_rules();
|
||||
init_second_stage_executed = true;
|
||||
ksu_android_ns_fs_check();
|
||||
}
|
||||
} else {
|
||||
pr_err("/init parse args err!\n");
|
||||
}
|
||||
} else if (argc == 1 && !init_second_stage_executed && envp) {
|
||||
/* This applies to versions between Android 8 ~ 9 */
|
||||
int envc = count(*envp, MAX_ARG_STRINGS);
|
||||
if (envc > 0) {
|
||||
int n;
|
||||
for (n = 1; n <= envc; n++) {
|
||||
const char __user *p =
|
||||
get_user_arg_ptr(*envp, n);
|
||||
if (!p || IS_ERR(p)) {
|
||||
continue;
|
||||
}
|
||||
char env[256];
|
||||
// Reading environment variable strings from user space
|
||||
if (ksu_strncpy_from_user_retry(
|
||||
env, p, sizeof(env)) < 0)
|
||||
continue;
|
||||
// Parsing environment variable names and values
|
||||
char *env_name = env;
|
||||
char *env_value = strchr(env, '=');
|
||||
if (env_value == NULL)
|
||||
continue;
|
||||
// Replace equal sign with string terminator
|
||||
*env_value = '\0';
|
||||
env_value++;
|
||||
// Check if the environment variable name and value are matching
|
||||
if (!strcmp(env_name,
|
||||
"INIT_SECOND_STAGE") &&
|
||||
(!strcmp(env_value, "1") ||
|
||||
!strcmp(env_value, "true"))) {
|
||||
pr_info("/init second_stage executed\n");
|
||||
apply_kernelsu_rules();
|
||||
init_second_stage_executed =
|
||||
true;
|
||||
ksu_android_ns_fs_check();
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
if (unlikely(first_app_process && !memcmp(filename->name, app_process,
|
||||
sizeof(app_process) - 1))) {
|
||||
first_app_process = false;
|
||||
pr_info("exec app_process, /data prepared, second_stage: %d\n",
|
||||
init_second_stage_executed);
|
||||
on_post_fs_data(); // we keep this for old ksud
|
||||
stop_execve_hook();
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static ssize_t (*orig_read)(struct file *, char __user *, size_t, loff_t *);
|
||||
static ssize_t (*orig_read_iter)(struct kiocb *, struct iov_iter *);
|
||||
static struct file_operations fops_proxy;
|
||||
static ssize_t read_count_append = 0;
|
||||
|
||||
static ssize_t read_proxy(struct file *file, char __user *buf, size_t count,
|
||||
loff_t *pos)
|
||||
{
|
||||
bool first_read = file->f_pos == 0;
|
||||
ssize_t ret = orig_read(file, buf, count, pos);
|
||||
if (first_read) {
|
||||
pr_info("read_proxy append %ld + %ld\n", ret,
|
||||
read_count_append);
|
||||
ret += read_count_append;
|
||||
}
|
||||
return ret;
|
||||
}
|
||||
|
||||
static ssize_t read_iter_proxy(struct kiocb *iocb, struct iov_iter *to)
|
||||
{
|
||||
bool first_read = iocb->ki_pos == 0;
|
||||
ssize_t ret = orig_read_iter(iocb, to);
|
||||
if (first_read) {
|
||||
pr_info("read_iter_proxy append %ld + %ld\n", ret,
|
||||
read_count_append);
|
||||
ret += read_count_append;
|
||||
}
|
||||
return ret;
|
||||
}
|
||||
|
||||
int ksu_handle_vfs_read(struct file **file_ptr, char __user **buf_ptr,
|
||||
size_t *count_ptr, loff_t **pos)
|
||||
{
|
||||
#ifndef CONFIG_KSU_KPROBES_HOOK
|
||||
if (!ksu_vfs_read_hook) {
|
||||
return 0;
|
||||
}
|
||||
#endif
|
||||
struct file *file;
|
||||
char __user *buf;
|
||||
size_t count;
|
||||
|
||||
if (strcmp(current->comm, "init")) {
|
||||
// we are only interest in `init` process
|
||||
return 0;
|
||||
}
|
||||
|
||||
file = *file_ptr;
|
||||
if (IS_ERR(file)) {
|
||||
return 0;
|
||||
}
|
||||
|
||||
if (!S_ISREG(file->f_path.dentry->d_inode->i_mode)) {
|
||||
return 0;
|
||||
}
|
||||
|
||||
const char *short_name = file->f_path.dentry->d_name.name;
|
||||
if (strcmp(short_name, "atrace.rc")) {
|
||||
// we are only interest `atrace.rc` file name file
|
||||
return 0;
|
||||
}
|
||||
char path[256];
|
||||
char *dpath = d_path(&file->f_path, path, sizeof(path));
|
||||
|
||||
if (IS_ERR(dpath)) {
|
||||
return 0;
|
||||
}
|
||||
|
||||
if (strcmp(dpath, "/system/etc/init/atrace.rc")) {
|
||||
return 0;
|
||||
}
|
||||
|
||||
// we only process the first read
|
||||
static bool rc_inserted = false;
|
||||
if (rc_inserted) {
|
||||
// we don't need this kprobe, unregister it!
|
||||
stop_vfs_read_hook();
|
||||
return 0;
|
||||
}
|
||||
rc_inserted = true;
|
||||
|
||||
// now we can sure that the init process is reading
|
||||
// `/system/etc/init/atrace.rc`
|
||||
buf = *buf_ptr;
|
||||
count = *count_ptr;
|
||||
|
||||
size_t rc_count = strlen(KERNEL_SU_RC);
|
||||
|
||||
pr_info("vfs_read: %s, comm: %s, count: %zu, rc_count: %zu\n", dpath,
|
||||
current->comm, count, rc_count);
|
||||
|
||||
if (count < rc_count) {
|
||||
pr_err("count: %zu < rc_count: %zu\n", count, rc_count);
|
||||
return 0;
|
||||
}
|
||||
|
||||
size_t ret = copy_to_user(buf, KERNEL_SU_RC, rc_count);
|
||||
if (ret) {
|
||||
pr_err("copy ksud.rc failed: %zu\n", ret);
|
||||
return 0;
|
||||
}
|
||||
|
||||
// we've succeed to insert ksud.rc, now we need to proxy the read and modify the result!
|
||||
// But, we can not modify the file_operations directly, because it's in read-only memory.
|
||||
// We just replace the whole file_operations with a proxy one.
|
||||
memcpy(&fops_proxy, file->f_op, sizeof(struct file_operations));
|
||||
orig_read = file->f_op->read;
|
||||
if (orig_read) {
|
||||
fops_proxy.read = read_proxy;
|
||||
}
|
||||
#if LINUX_VERSION_CODE >= KERNEL_VERSION(3, 16, 0)
|
||||
orig_read_iter = file->f_op->read_iter;
|
||||
if (orig_read_iter) {
|
||||
fops_proxy.read_iter = read_iter_proxy;
|
||||
}
|
||||
#endif
|
||||
// replace the file_operations
|
||||
file->f_op = &fops_proxy;
|
||||
read_count_append = rc_count;
|
||||
|
||||
*buf_ptr = buf + rc_count;
|
||||
*count_ptr = count - rc_count;
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
int ksu_handle_sys_read(unsigned int fd, char __user **buf_ptr,
|
||||
size_t *count_ptr)
|
||||
{
|
||||
struct file *file = fget(fd);
|
||||
if (!file) {
|
||||
return 0;
|
||||
}
|
||||
int result = ksu_handle_vfs_read(&file, buf_ptr, count_ptr, NULL);
|
||||
fput(file);
|
||||
return result;
|
||||
}
|
||||
|
||||
static unsigned int volumedown_pressed_count = 0;
|
||||
|
||||
static bool is_volumedown_enough(unsigned int count)
|
||||
{
|
||||
return count >= 3;
|
||||
}
|
||||
|
||||
int ksu_handle_input_handle_event(unsigned int *type, unsigned int *code,
|
||||
int *value)
|
||||
{
|
||||
#ifndef CONFIG_KSU_KPROBES_HOOK
|
||||
if (!ksu_input_hook) {
|
||||
return 0;
|
||||
}
|
||||
#endif
|
||||
if (*type == EV_KEY && *code == KEY_VOLUMEDOWN) {
|
||||
int val = *value;
|
||||
pr_info("KEY_VOLUMEDOWN val: %d\n", val);
|
||||
if (val) {
|
||||
// key pressed, count it
|
||||
volumedown_pressed_count += 1;
|
||||
if (is_volumedown_enough(volumedown_pressed_count)) {
|
||||
stop_input_hook();
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
bool ksu_is_safe_mode()
|
||||
{
|
||||
static bool safe_mode = false;
|
||||
if (safe_mode) {
|
||||
// don't need to check again, userspace may call multiple times
|
||||
return true;
|
||||
}
|
||||
|
||||
// stop hook first!
|
||||
stop_input_hook();
|
||||
|
||||
pr_info("volumedown_pressed_count: %d\n", volumedown_pressed_count);
|
||||
if (is_volumedown_enough(volumedown_pressed_count)) {
|
||||
// pressed over 3 times
|
||||
pr_info("KEY_VOLUMEDOWN pressed max times, safe mode detected!\n");
|
||||
safe_mode = true;
|
||||
return true;
|
||||
}
|
||||
|
||||
return false;
|
||||
}
|
||||
|
||||
/*
|
||||
* ksu_handle_execve_ksud, execve_ksud handler for non kprobe
|
||||
* adapted from sys_execve_handler_pre
|
||||
* https://github.com/tiann/KernelSU/commit/2027ac3
|
||||
*/
|
||||
__maybe_unused int ksu_handle_execve_ksud(const char __user *filename_user,
|
||||
const char __user *const __user *__argv)
|
||||
{
|
||||
struct user_arg_ptr argv = { .ptr.native = __argv };
|
||||
struct filename filename_in, *filename_p;
|
||||
char path[32];
|
||||
|
||||
#ifndef CONFIG_KSU_KPROBES_HOOK
|
||||
// return early if disabled.
|
||||
if (!ksu_execveat_hook) {
|
||||
return 0;
|
||||
}
|
||||
#endif
|
||||
|
||||
if (!filename_user)
|
||||
return 0;
|
||||
|
||||
memset(path, 0, sizeof(path));
|
||||
ksu_strncpy_from_user_nofault(path, filename_user, 32);
|
||||
|
||||
// this is because ksu_handle_execveat_ksud calls it filename->name
|
||||
filename_in.name = path;
|
||||
filename_p = &filename_in;
|
||||
|
||||
return ksu_handle_execveat_ksud(AT_FDCWD, &filename_p, &argv, NULL, NULL);
|
||||
}
|
||||
|
||||
#ifdef CONFIG_KSU_KPROBES_HOOK
|
||||
|
||||
// https://elixir.bootlin.com/linux/v5.10.158/source/fs/exec.c#L1864
|
||||
static int execve_handler_pre(struct kprobe *p, struct pt_regs *regs)
|
||||
{
|
||||
int *fd = (int *)&PT_REGS_PARM1(regs);
|
||||
struct filename **filename_ptr =
|
||||
(struct filename **)&PT_REGS_PARM2(regs);
|
||||
struct user_arg_ptr argv;
|
||||
#ifdef CONFIG_COMPAT
|
||||
argv.is_compat = PT_REGS_PARM3(regs);
|
||||
if (unlikely(argv.is_compat)) {
|
||||
argv.ptr.compat = PT_REGS_CCALL_PARM4(regs);
|
||||
} else {
|
||||
argv.ptr.native = PT_REGS_CCALL_PARM4(regs);
|
||||
}
|
||||
#else
|
||||
argv.ptr.native = PT_REGS_PARM3(regs);
|
||||
#endif
|
||||
|
||||
return ksu_handle_execveat_ksud(fd, filename_ptr, &argv, NULL, NULL);
|
||||
}
|
||||
|
||||
static int sys_execve_handler_pre(struct kprobe *p, struct pt_regs *regs)
|
||||
{
|
||||
struct pt_regs *real_regs = PT_REAL_REGS(regs);
|
||||
const char __user **filename_user =
|
||||
(const char **)&PT_REGS_PARM1(real_regs);
|
||||
const char __user *const __user *__argv =
|
||||
(const char __user *const __user *)PT_REGS_PARM2(real_regs);
|
||||
struct user_arg_ptr argv = { .ptr.native = __argv };
|
||||
struct filename filename_in, *filename_p;
|
||||
char path[32];
|
||||
|
||||
if (!filename_user)
|
||||
return 0;
|
||||
|
||||
memset(path, 0, sizeof(path));
|
||||
ksu_strncpy_from_user_nofault(path, *filename_user, 32);
|
||||
filename_in.name = path;
|
||||
|
||||
filename_p = &filename_in;
|
||||
return ksu_handle_execveat_ksud(AT_FDCWD, &filename_p, &argv, NULL,
|
||||
NULL);
|
||||
}
|
||||
|
||||
// remove this later!
|
||||
__maybe_unused static int vfs_read_handler_pre(struct kprobe *p,
|
||||
struct pt_regs *regs)
|
||||
{
|
||||
struct file **file_ptr = (struct file **)&PT_REGS_PARM1(regs);
|
||||
char __user **buf_ptr = (char **)&PT_REGS_PARM2(regs);
|
||||
size_t *count_ptr = (size_t *)&PT_REGS_PARM3(regs);
|
||||
loff_t **pos_ptr = (loff_t **)&PT_REGS_CCALL_PARM4(regs);
|
||||
|
||||
return ksu_handle_vfs_read(file_ptr, buf_ptr, count_ptr, pos_ptr);
|
||||
}
|
||||
|
||||
static int sys_read_handler_pre(struct kprobe *p, struct pt_regs *regs)
|
||||
{
|
||||
struct pt_regs *real_regs = PT_REAL_REGS(regs);
|
||||
unsigned int fd = PT_REGS_PARM1(real_regs);
|
||||
char __user **buf_ptr = (char __user **)&PT_REGS_PARM2(real_regs);
|
||||
size_t count_ptr = (size_t *)&PT_REGS_PARM3(real_regs);
|
||||
|
||||
return ksu_handle_sys_read(fd, buf_ptr, count_ptr);
|
||||
}
|
||||
|
||||
static int input_handle_event_handler_pre(struct kprobe *p,
|
||||
struct pt_regs *regs)
|
||||
{
|
||||
unsigned int *type = (unsigned int *)&PT_REGS_PARM2(regs);
|
||||
unsigned int *code = (unsigned int *)&PT_REGS_PARM3(regs);
|
||||
int *value = (int *)&PT_REGS_CCALL_PARM4(regs);
|
||||
return ksu_handle_input_handle_event(type, code, value);
|
||||
}
|
||||
|
||||
#if 1
|
||||
static struct kprobe execve_kp = {
|
||||
.symbol_name = SYS_EXECVE_SYMBOL,
|
||||
.pre_handler = sys_execve_handler_pre,
|
||||
};
|
||||
#else
|
||||
static struct kprobe execve_kp = {
|
||||
#if LINUX_VERSION_CODE >= KERNEL_VERSION(5, 9, 0)
|
||||
.symbol_name = "do_execveat_common",
|
||||
#elif LINUX_VERSION_CODE >= KERNEL_VERSION(4, 19, 0)
|
||||
.symbol_name = "__do_execve_file",
|
||||
#elif LINUX_VERSION_CODE >= KERNEL_VERSION(3, 19, 0)
|
||||
.symbol_name = "do_execveat_common",
|
||||
#endif
|
||||
.pre_handler = execve_handler_pre,
|
||||
};
|
||||
#endif
|
||||
|
||||
#if 1
|
||||
static struct kprobe vfs_read_kp = {
|
||||
.symbol_name = SYS_READ_SYMBOL,
|
||||
.pre_handler = sys_read_handler_pre,
|
||||
};
|
||||
#else
|
||||
static struct kprobe vfs_read_kp = {
|
||||
.symbol_name = "vfs_read",
|
||||
.pre_handler = vfs_read_handler_pre,
|
||||
};
|
||||
#endif
|
||||
|
||||
static struct kprobe input_event_kp = {
|
||||
.symbol_name = "input_event",
|
||||
.pre_handler = input_handle_event_handler_pre,
|
||||
};
|
||||
|
||||
static void do_stop_vfs_read_hook(struct work_struct *work)
|
||||
{
|
||||
unregister_kprobe(&vfs_read_kp);
|
||||
}
|
||||
|
||||
static void do_stop_execve_hook(struct work_struct *work)
|
||||
{
|
||||
unregister_kprobe(&execve_kp);
|
||||
}
|
||||
|
||||
static void do_stop_input_hook(struct work_struct *work)
|
||||
{
|
||||
unregister_kprobe(&input_event_kp);
|
||||
}
|
||||
#endif
|
||||
|
||||
#if LINUX_VERSION_CODE < KERNEL_VERSION(4, 14, 0)
|
||||
#include "objsec.h" // task_security_struct
|
||||
bool is_ksu_transition(const struct task_security_struct *old_tsec,
|
||||
const struct task_security_struct *new_tsec)
|
||||
{
|
||||
static u32 ksu_sid;
|
||||
char *secdata;
|
||||
u32 seclen;
|
||||
bool allowed = false;
|
||||
|
||||
if (!ksu_sid)
|
||||
security_secctx_to_secid("u:r:su:s0", strlen("u:r:su:s0"), &ksu_sid);
|
||||
|
||||
if (security_secid_to_secctx(old_tsec->sid, &secdata, &seclen))
|
||||
return false;
|
||||
|
||||
allowed = (!strcmp("u:r:init:s0", secdata) && new_tsec->sid == ksu_sid);
|
||||
security_release_secctx(secdata, seclen);
|
||||
|
||||
return allowed;
|
||||
}
|
||||
#endif
|
||||
|
||||
static void stop_vfs_read_hook()
|
||||
{
|
||||
#ifdef CONFIG_KSU_KPROBES_HOOK
|
||||
bool ret = schedule_work(&stop_vfs_read_work);
|
||||
pr_info("unregister vfs_read kprobe: %d!\n", ret);
|
||||
#else
|
||||
ksu_vfs_read_hook = false;
|
||||
pr_info("stop vfs_read_hook\n");
|
||||
#endif
|
||||
}
|
||||
|
||||
static void stop_execve_hook()
|
||||
{
|
||||
#ifdef CONFIG_KSU_KPROBES_HOOK
|
||||
bool ret = schedule_work(&stop_execve_hook_work);
|
||||
pr_info("unregister execve kprobe: %d!\n", ret);
|
||||
#else
|
||||
ksu_execveat_hook = false;
|
||||
pr_info("stop execve_hook\n");
|
||||
#endif
|
||||
}
|
||||
|
||||
static void stop_input_hook()
|
||||
{
|
||||
#ifdef CONFIG_KSU_KPROBES_HOOK
|
||||
static bool input_hook_stopped = false;
|
||||
if (input_hook_stopped) {
|
||||
return;
|
||||
}
|
||||
input_hook_stopped = true;
|
||||
bool ret = schedule_work(&stop_input_hook_work);
|
||||
pr_info("unregister input kprobe: %d!\n", ret);
|
||||
#else
|
||||
if (!ksu_input_hook) { return; }
|
||||
ksu_input_hook = false;
|
||||
pr_info("stop input_hook\n");
|
||||
#endif
|
||||
}
|
||||
|
||||
// ksud: module support
|
||||
void ksu_ksud_init()
|
||||
{
|
||||
#ifdef CONFIG_KSU_KPROBES_HOOK
|
||||
int ret;
|
||||
|
||||
ret = register_kprobe(&execve_kp);
|
||||
pr_info("ksud: execve_kp: %d\n", ret);
|
||||
|
||||
ret = register_kprobe(&vfs_read_kp);
|
||||
pr_info("ksud: vfs_read_kp: %d\n", ret);
|
||||
|
||||
ret = register_kprobe(&input_event_kp);
|
||||
pr_info("ksud: input_event_kp: %d\n", ret);
|
||||
|
||||
INIT_WORK(&stop_vfs_read_work, do_stop_vfs_read_hook);
|
||||
INIT_WORK(&stop_execve_hook_work, do_stop_execve_hook);
|
||||
INIT_WORK(&stop_input_hook_work, do_stop_input_hook);
|
||||
#endif
|
||||
}
|
||||
|
||||
void ksu_ksud_exit()
|
||||
{
|
||||
#ifdef CONFIG_KSU_KPROBES_HOOK
|
||||
unregister_kprobe(&execve_kp);
|
||||
// this should be done before unregister vfs_read_kp
|
||||
// unregister_kprobe(&vfs_read_kp);
|
||||
unregister_kprobe(&input_event_kp);
|
||||
#endif
|
||||
}
|
||||
@@ -1,14 +0,0 @@
|
||||
#ifndef __KSU_H_KSUD
|
||||
#define __KSU_H_KSUD
|
||||
|
||||
#include <linux/types.h>
|
||||
|
||||
#define KSUD_PATH "/data/adb/ksud"
|
||||
|
||||
void on_post_fs_data(void);
|
||||
|
||||
bool ksu_is_safe_mode(void);
|
||||
|
||||
extern u32 ksu_devpts_sid;
|
||||
|
||||
#endif
|
||||
@@ -1,36 +0,0 @@
|
||||
#ifndef __KSU_H_KSU_MANAGER
|
||||
#define __KSU_H_KSU_MANAGER
|
||||
|
||||
#include <linux/cred.h>
|
||||
#include <linux/types.h>
|
||||
|
||||
#define KSU_INVALID_UID -1
|
||||
|
||||
extern uid_t ksu_manager_uid; // DO NOT DIRECT USE
|
||||
|
||||
static inline bool ksu_is_manager_uid_valid()
|
||||
{
|
||||
return ksu_manager_uid != KSU_INVALID_UID;
|
||||
}
|
||||
|
||||
static inline bool is_manager()
|
||||
{
|
||||
return unlikely(ksu_manager_uid == current_uid().val);
|
||||
}
|
||||
|
||||
static inline uid_t ksu_get_manager_uid()
|
||||
{
|
||||
return ksu_manager_uid;
|
||||
}
|
||||
|
||||
static inline void ksu_set_manager_uid(uid_t uid)
|
||||
{
|
||||
ksu_manager_uid = uid;
|
||||
}
|
||||
|
||||
static inline void ksu_invalidate_manager_uid()
|
||||
{
|
||||
ksu_manager_uid = KSU_INVALID_UID;
|
||||
}
|
||||
|
||||
#endif
|
||||
@@ -1,16 +0,0 @@
|
||||
obj-y += selinux.o
|
||||
obj-y += sepolicy.o
|
||||
obj-y += rules.o
|
||||
|
||||
ifeq ($(shell grep -q " current_sid(void)" $(srctree)/security/selinux/include/objsec.h; echo $$?),0)
|
||||
ccflags-y += -DKSU_COMPAT_HAS_CURRENT_SID
|
||||
endif
|
||||
|
||||
ifeq ($(shell grep -q "struct selinux_state " $(srctree)/security/selinux/include/security.h; echo $$?),0)
|
||||
ccflags-y += -DKSU_COMPAT_HAS_SELINUX_STATE
|
||||
endif
|
||||
|
||||
ccflags-y += -Wno-implicit-function-declaration -Wno-strict-prototypes -Wno-int-conversion
|
||||
ccflags-y += -Wno-declaration-after-statement -Wno-unused-function
|
||||
ccflags-y += -I$(srctree)/security/selinux -I$(srctree)/security/selinux/include
|
||||
ccflags-y += -I$(objtree)/security/selinux -include $(srctree)/include/uapi/asm-generic/errno.h
|
||||
@@ -1,555 +0,0 @@
|
||||
#include <linux/uaccess.h>
|
||||
#include <linux/types.h>
|
||||
#include <linux/version.h>
|
||||
|
||||
#include "../klog.h" // IWYU pragma: keep
|
||||
#include "selinux.h"
|
||||
#include "sepolicy.h"
|
||||
#include "ss/services.h"
|
||||
#include "linux/lsm_audit.h"
|
||||
#include "xfrm.h"
|
||||
|
||||
#if LINUX_VERSION_CODE >= KERNEL_VERSION(5, 10, 0)
|
||||
#define SELINUX_POLICY_INSTEAD_SELINUX_SS
|
||||
#endif
|
||||
|
||||
#define KERNEL_SU_DOMAIN "su"
|
||||
#define KERNEL_SU_FILE "ksu_file"
|
||||
#define KERNEL_EXEC_TYPE "ksu_exec"
|
||||
#define ALL NULL
|
||||
|
||||
static struct policydb *get_policydb(void)
|
||||
{
|
||||
struct policydb *db;
|
||||
// selinux_state does not exists before 4.19
|
||||
#ifdef KSU_COMPAT_USE_SELINUX_STATE
|
||||
#ifdef SELINUX_POLICY_INSTEAD_SELINUX_SS
|
||||
struct selinux_policy *policy = selinux_state.policy;
|
||||
db = &policy->policydb;
|
||||
#else
|
||||
struct selinux_ss *ss = selinux_state.ss;
|
||||
db = &ss->policydb;
|
||||
#endif
|
||||
#else
|
||||
db = &policydb;
|
||||
#endif
|
||||
return db;
|
||||
}
|
||||
|
||||
static DEFINE_MUTEX(ksu_rules);
|
||||
|
||||
void apply_kernelsu_rules()
|
||||
{
|
||||
struct policydb *db;
|
||||
|
||||
if (!getenforce()) {
|
||||
pr_info("SELinux permissive or disabled, apply rules!\n");
|
||||
}
|
||||
|
||||
mutex_lock(&ksu_rules);
|
||||
|
||||
db = get_policydb();
|
||||
|
||||
ksu_permissive(db, KERNEL_SU_DOMAIN);
|
||||
ksu_typeattribute(db, KERNEL_SU_DOMAIN, "mlstrustedsubject");
|
||||
ksu_typeattribute(db, KERNEL_SU_DOMAIN, "netdomain");
|
||||
ksu_typeattribute(db, KERNEL_SU_DOMAIN, "bluetoothdomain");
|
||||
|
||||
// Create unconstrained file type
|
||||
ksu_type(db, KERNEL_SU_FILE, "file_type");
|
||||
ksu_typeattribute(db, KERNEL_SU_FILE, "mlstrustedobject");
|
||||
ksu_allow(db, ALL, KERNEL_SU_FILE, ALL, ALL);
|
||||
|
||||
// allow all!
|
||||
ksu_allow(db, KERNEL_SU_DOMAIN, ALL, ALL, ALL);
|
||||
|
||||
// allow us do any ioctl
|
||||
if (db->policyvers >= POLICYDB_VERSION_XPERMS_IOCTL) {
|
||||
ksu_allowxperm(db, KERNEL_SU_DOMAIN, ALL, "blk_file", ALL);
|
||||
ksu_allowxperm(db, KERNEL_SU_DOMAIN, ALL, "fifo_file", ALL);
|
||||
ksu_allowxperm(db, KERNEL_SU_DOMAIN, ALL, "chr_file", ALL);
|
||||
ksu_allowxperm(db, KERNEL_SU_DOMAIN, ALL, "file", ALL);
|
||||
}
|
||||
|
||||
// we need to save allowlist in /data/adb/ksu
|
||||
ksu_allow(db, "kernel", "adb_data_file", "dir", ALL);
|
||||
ksu_allow(db, "kernel", "adb_data_file", "file", ALL);
|
||||
// we need to search /data/app
|
||||
ksu_allow(db, "kernel", "apk_data_file", "file", "open");
|
||||
ksu_allow(db, "kernel", "apk_data_file", "dir", "open");
|
||||
ksu_allow(db, "kernel", "apk_data_file", "dir", "read");
|
||||
ksu_allow(db, "kernel", "apk_data_file", "dir", "search");
|
||||
// we may need to do mount on shell
|
||||
ksu_allow(db, "kernel", "shell_data_file", "file", ALL);
|
||||
// we need to read /data/system/packages.list
|
||||
ksu_allow(db, "kernel", "kernel", "capability", "dac_override");
|
||||
// Android 10+:
|
||||
// http://aospxref.com/android-12.0.0_r3/xref/system/sepolicy/private/file_contexts#512
|
||||
ksu_allow(db, "kernel", "packages_list_file", "file", ALL);
|
||||
// Kernel 4.4
|
||||
ksu_allow(db, "kernel", "packages_list_file", "dir", ALL);
|
||||
// Android 9-:
|
||||
// http://aospxref.com/android-9.0.0_r61/xref/system/sepolicy/private/file_contexts#360
|
||||
ksu_allow(db, "kernel", "system_data_file", "file", ALL);
|
||||
ksu_allow(db, "kernel", "system_data_file", "dir", ALL);
|
||||
// our ksud triggered by init
|
||||
ksu_allow(db, "init", "adb_data_file", "file", ALL);
|
||||
ksu_allow(db, "init", "adb_data_file", "dir", ALL); // #1289
|
||||
ksu_allow(db, "init", KERNEL_SU_DOMAIN, ALL, ALL);
|
||||
// we need to umount modules in zygote
|
||||
ksu_allow(db, "zygote", "adb_data_file", "dir", "search");
|
||||
|
||||
// copied from Magisk rules
|
||||
// suRights
|
||||
ksu_allow(db, "servicemanager", KERNEL_SU_DOMAIN, "dir", "search");
|
||||
ksu_allow(db, "servicemanager", KERNEL_SU_DOMAIN, "dir", "read");
|
||||
ksu_allow(db, "servicemanager", KERNEL_SU_DOMAIN, "file", "open");
|
||||
ksu_allow(db, "servicemanager", KERNEL_SU_DOMAIN, "file", "read");
|
||||
ksu_allow(db, "servicemanager", KERNEL_SU_DOMAIN, "process", "getattr");
|
||||
ksu_allow(db, ALL, KERNEL_SU_DOMAIN, "process", "sigchld");
|
||||
|
||||
// allowLog
|
||||
ksu_allow(db, "logd", KERNEL_SU_DOMAIN, "dir", "search");
|
||||
ksu_allow(db, "logd", KERNEL_SU_DOMAIN, "file", "read");
|
||||
ksu_allow(db, "logd", KERNEL_SU_DOMAIN, "file", "open");
|
||||
ksu_allow(db, "logd", KERNEL_SU_DOMAIN, "file", "getattr");
|
||||
|
||||
// dumpsys
|
||||
ksu_allow(db, ALL, KERNEL_SU_DOMAIN, "fd", "use");
|
||||
ksu_allow(db, ALL, KERNEL_SU_DOMAIN, "fifo_file", "write");
|
||||
ksu_allow(db, ALL, KERNEL_SU_DOMAIN, "fifo_file", "read");
|
||||
ksu_allow(db, ALL, KERNEL_SU_DOMAIN, "fifo_file", "open");
|
||||
ksu_allow(db, ALL, KERNEL_SU_DOMAIN, "fifo_file", "getattr");
|
||||
|
||||
// bootctl
|
||||
ksu_allow(db, "hwservicemanager", KERNEL_SU_DOMAIN, "dir", "search");
|
||||
ksu_allow(db, "hwservicemanager", KERNEL_SU_DOMAIN, "file", "read");
|
||||
ksu_allow(db, "hwservicemanager", KERNEL_SU_DOMAIN, "file", "open");
|
||||
ksu_allow(db, "hwservicemanager", KERNEL_SU_DOMAIN, "process",
|
||||
"getattr");
|
||||
|
||||
// For mounting loop devices, mirrors, tmpfs
|
||||
ksu_allow(db, "kernel", ALL, "file", "read");
|
||||
ksu_allow(db, "kernel", ALL, "file", "write");
|
||||
|
||||
// Allow all binder transactions
|
||||
ksu_allow(db, ALL, KERNEL_SU_DOMAIN, "binder", ALL);
|
||||
|
||||
// Allow system server kill su process
|
||||
ksu_allow(db, "system_server", KERNEL_SU_DOMAIN, "process", "getpgid");
|
||||
ksu_allow(db, "system_server", KERNEL_SU_DOMAIN, "process", "sigkill");
|
||||
|
||||
mutex_unlock(&ksu_rules);
|
||||
}
|
||||
|
||||
#define MAX_SEPOL_LEN 128
|
||||
|
||||
#define CMD_NORMAL_PERM 1
|
||||
#define CMD_XPERM 2
|
||||
#define CMD_TYPE_STATE 3
|
||||
#define CMD_TYPE 4
|
||||
#define CMD_TYPE_ATTR 5
|
||||
#define CMD_ATTR 6
|
||||
#define CMD_TYPE_TRANSITION 7
|
||||
#define CMD_TYPE_CHANGE 8
|
||||
#define CMD_GENFSCON 9
|
||||
|
||||
#ifdef CONFIG_64BIT
|
||||
struct sepol_data {
|
||||
u32 cmd;
|
||||
u32 subcmd;
|
||||
u64 field_sepol1;
|
||||
u64 field_sepol2;
|
||||
u64 field_sepol3;
|
||||
u64 field_sepol4;
|
||||
u64 field_sepol5;
|
||||
u64 field_sepol6;
|
||||
u64 field_sepol7;
|
||||
};
|
||||
#ifdef CONFIG_COMPAT
|
||||
extern bool ksu_is_compat __read_mostly;
|
||||
struct sepol_compat_data {
|
||||
u32 cmd;
|
||||
u32 subcmd;
|
||||
u32 field_sepol1;
|
||||
u32 field_sepol2;
|
||||
u32 field_sepol3;
|
||||
u32 field_sepol4;
|
||||
u32 field_sepol5;
|
||||
u32 field_sepol6;
|
||||
u32 field_sepol7;
|
||||
};
|
||||
#endif // CONFIG_COMPAT
|
||||
#else
|
||||
struct sepol_data {
|
||||
u32 cmd;
|
||||
u32 subcmd;
|
||||
u32 field_sepol1;
|
||||
u32 field_sepol2;
|
||||
u32 field_sepol3;
|
||||
u32 field_sepol4;
|
||||
u32 field_sepol5;
|
||||
u32 field_sepol6;
|
||||
u32 field_sepol7;
|
||||
};
|
||||
#endif // CONFIG_64BIT
|
||||
|
||||
static int get_object(char *buf, char __user *user_object, size_t buf_sz,
|
||||
char **object)
|
||||
{
|
||||
if (!user_object) {
|
||||
*object = ALL;
|
||||
return 0;
|
||||
}
|
||||
|
||||
if (strncpy_from_user(buf, user_object, buf_sz) < 0) {
|
||||
return -1;
|
||||
}
|
||||
|
||||
*object = buf;
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
// reset avc cache table, otherwise the new rules will not take effect if already denied
|
||||
static void reset_avc_cache()
|
||||
{
|
||||
#if ((!defined(KSU_COMPAT_USE_SELINUX_STATE)) || \
|
||||
LINUX_VERSION_CODE >= KERNEL_VERSION(6, 4, 0))
|
||||
avc_ss_reset(0);
|
||||
selnl_notify_policyload(0);
|
||||
selinux_status_update_policyload(0);
|
||||
#else
|
||||
struct selinux_avc *avc = selinux_state.avc;
|
||||
avc_ss_reset(avc, 0);
|
||||
selnl_notify_policyload(0);
|
||||
selinux_status_update_policyload(&selinux_state, 0);
|
||||
#endif
|
||||
selinux_xfrm_notify_policyload();
|
||||
}
|
||||
|
||||
int handle_sepolicy(unsigned long arg3, void __user *arg4)
|
||||
{
|
||||
struct policydb *db;
|
||||
|
||||
if (!arg4) {
|
||||
return -1;
|
||||
}
|
||||
|
||||
if (!getenforce()) {
|
||||
pr_info("SELinux permissive or disabled when handle policy!\n");
|
||||
}
|
||||
|
||||
u32 cmd, subcmd;
|
||||
char __user *sepol1, *sepol2, *sepol3, *sepol4, *sepol5, *sepol6, *sepol7;
|
||||
|
||||
#if defined(CONFIG_64BIT) && defined(CONFIG_COMPAT)
|
||||
if (unlikely(ksu_is_compat)) {
|
||||
struct sepol_compat_data compat_data;
|
||||
if (copy_from_user(&compat_data, arg4, sizeof(struct sepol_compat_data))) {
|
||||
pr_err("sepol: copy sepol_data failed.\n");
|
||||
return -1;
|
||||
}
|
||||
sepol1 = compat_ptr(compat_data.field_sepol1);
|
||||
sepol2 = compat_ptr(compat_data.field_sepol2);
|
||||
sepol3 = compat_ptr(compat_data.field_sepol3);
|
||||
sepol4 = compat_ptr(compat_data.field_sepol4);
|
||||
sepol5 = compat_ptr(compat_data.field_sepol5);
|
||||
sepol6 = compat_ptr(compat_data.field_sepol6);
|
||||
sepol7 = compat_ptr(compat_data.field_sepol7);
|
||||
cmd = compat_data.cmd;
|
||||
subcmd = compat_data.subcmd;
|
||||
} else {
|
||||
struct sepol_data data;
|
||||
if (copy_from_user(&data, arg4, sizeof(struct sepol_data))) {
|
||||
pr_err("sepol: copy sepol_data failed.\n");
|
||||
return -1;
|
||||
}
|
||||
sepol1 = data.field_sepol1;
|
||||
sepol2 = data.field_sepol2;
|
||||
sepol3 = data.field_sepol3;
|
||||
sepol4 = data.field_sepol4;
|
||||
sepol5 = data.field_sepol5;
|
||||
sepol6 = data.field_sepol6;
|
||||
sepol7 = data.field_sepol7;
|
||||
cmd = data.cmd;
|
||||
subcmd = data.subcmd;
|
||||
}
|
||||
#else
|
||||
// basically for full native, say (64BIT=y COMPAT=n) || (64BIT=n)
|
||||
struct sepol_data data;
|
||||
if (copy_from_user(&data, arg4, sizeof(struct sepol_data))) {
|
||||
pr_err("sepol: copy sepol_data failed.\n");
|
||||
return -1;
|
||||
}
|
||||
sepol1 = data.field_sepol1;
|
||||
sepol2 = data.field_sepol2;
|
||||
sepol3 = data.field_sepol3;
|
||||
sepol4 = data.field_sepol4;
|
||||
sepol5 = data.field_sepol5;
|
||||
sepol6 = data.field_sepol6;
|
||||
sepol7 = data.field_sepol7;
|
||||
cmd = data.cmd;
|
||||
subcmd = data.subcmd;
|
||||
#endif
|
||||
|
||||
mutex_lock(&ksu_rules);
|
||||
|
||||
db = get_policydb();
|
||||
|
||||
int ret = -1;
|
||||
if (cmd == CMD_NORMAL_PERM) {
|
||||
char src_buf[MAX_SEPOL_LEN];
|
||||
char tgt_buf[MAX_SEPOL_LEN];
|
||||
char cls_buf[MAX_SEPOL_LEN];
|
||||
char perm_buf[MAX_SEPOL_LEN];
|
||||
|
||||
char *s, *t, *c, *p;
|
||||
if (get_object(src_buf, sepol1, sizeof(src_buf), &s) < 0) {
|
||||
pr_err("sepol: copy src failed.\n");
|
||||
goto exit;
|
||||
}
|
||||
|
||||
if (get_object(tgt_buf, sepol2, sizeof(tgt_buf), &t) < 0) {
|
||||
pr_err("sepol: copy tgt failed.\n");
|
||||
goto exit;
|
||||
}
|
||||
|
||||
if (get_object(cls_buf, sepol3, sizeof(cls_buf), &c) < 0) {
|
||||
pr_err("sepol: copy cls failed.\n");
|
||||
goto exit;
|
||||
}
|
||||
|
||||
if (get_object(perm_buf, sepol4, sizeof(perm_buf), &p) <
|
||||
0) {
|
||||
pr_err("sepol: copy perm failed.\n");
|
||||
goto exit;
|
||||
}
|
||||
|
||||
bool success = false;
|
||||
if (subcmd == 1) {
|
||||
success = ksu_allow(db, s, t, c, p);
|
||||
} else if (subcmd == 2) {
|
||||
success = ksu_deny(db, s, t, c, p);
|
||||
} else if (subcmd == 3) {
|
||||
success = ksu_auditallow(db, s, t, c, p);
|
||||
} else if (subcmd == 4) {
|
||||
success = ksu_dontaudit(db, s, t, c, p);
|
||||
} else {
|
||||
pr_err("sepol: unknown subcmd: %d\n", subcmd);
|
||||
}
|
||||
ret = success ? 0 : -1;
|
||||
|
||||
} else if (cmd == CMD_XPERM) {
|
||||
char src_buf[MAX_SEPOL_LEN];
|
||||
char tgt_buf[MAX_SEPOL_LEN];
|
||||
char cls_buf[MAX_SEPOL_LEN];
|
||||
|
||||
char __maybe_unused
|
||||
operation[MAX_SEPOL_LEN]; // it is always ioctl now!
|
||||
char perm_set[MAX_SEPOL_LEN];
|
||||
|
||||
char *s, *t, *c;
|
||||
if (get_object(src_buf, sepol1, sizeof(src_buf), &s) < 0) {
|
||||
pr_err("sepol: copy src failed.\n");
|
||||
goto exit;
|
||||
}
|
||||
if (get_object(tgt_buf, sepol2, sizeof(tgt_buf), &t) < 0) {
|
||||
pr_err("sepol: copy tgt failed.\n");
|
||||
goto exit;
|
||||
}
|
||||
if (get_object(cls_buf, sepol3, sizeof(cls_buf), &c) < 0) {
|
||||
pr_err("sepol: copy cls failed.\n");
|
||||
goto exit;
|
||||
}
|
||||
if (strncpy_from_user(operation, sepol4,
|
||||
sizeof(operation)) < 0) {
|
||||
pr_err("sepol: copy operation failed.\n");
|
||||
goto exit;
|
||||
}
|
||||
if (strncpy_from_user(perm_set, sepol5, sizeof(perm_set)) <
|
||||
0) {
|
||||
pr_err("sepol: copy perm_set failed.\n");
|
||||
goto exit;
|
||||
}
|
||||
|
||||
bool success = false;
|
||||
if (subcmd == 1) {
|
||||
success = ksu_allowxperm(db, s, t, c, perm_set);
|
||||
} else if (subcmd == 2) {
|
||||
success = ksu_auditallowxperm(db, s, t, c, perm_set);
|
||||
} else if (subcmd == 3) {
|
||||
success = ksu_dontauditxperm(db, s, t, c, perm_set);
|
||||
} else {
|
||||
pr_err("sepol: unknown subcmd: %d\n", subcmd);
|
||||
}
|
||||
ret = success ? 0 : -1;
|
||||
} else if (cmd == CMD_TYPE_STATE) {
|
||||
char src[MAX_SEPOL_LEN];
|
||||
|
||||
if (strncpy_from_user(src, sepol1, sizeof(src)) < 0) {
|
||||
pr_err("sepol: copy src failed.\n");
|
||||
goto exit;
|
||||
}
|
||||
|
||||
bool success = false;
|
||||
if (subcmd == 1) {
|
||||
success = ksu_permissive(db, src);
|
||||
} else if (subcmd == 2) {
|
||||
success = ksu_enforce(db, src);
|
||||
} else {
|
||||
pr_err("sepol: unknown subcmd: %d\n", subcmd);
|
||||
}
|
||||
if (success)
|
||||
ret = 0;
|
||||
|
||||
} else if (cmd == CMD_TYPE || cmd == CMD_TYPE_ATTR) {
|
||||
char type[MAX_SEPOL_LEN];
|
||||
char attr[MAX_SEPOL_LEN];
|
||||
|
||||
if (strncpy_from_user(type, sepol1, sizeof(type)) < 0) {
|
||||
pr_err("sepol: copy type failed.\n");
|
||||
goto exit;
|
||||
}
|
||||
if (strncpy_from_user(attr, sepol2, sizeof(attr)) < 0) {
|
||||
pr_err("sepol: copy attr failed.\n");
|
||||
goto exit;
|
||||
}
|
||||
|
||||
bool success = false;
|
||||
if (cmd == CMD_TYPE) {
|
||||
success = ksu_type(db, type, attr);
|
||||
} else {
|
||||
success = ksu_typeattribute(db, type, attr);
|
||||
}
|
||||
if (!success) {
|
||||
pr_err("sepol: %d failed.\n", cmd);
|
||||
goto exit;
|
||||
}
|
||||
ret = 0;
|
||||
|
||||
} else if (cmd == CMD_ATTR) {
|
||||
char attr[MAX_SEPOL_LEN];
|
||||
|
||||
if (strncpy_from_user(attr, sepol1, sizeof(attr)) < 0) {
|
||||
pr_err("sepol: copy attr failed.\n");
|
||||
goto exit;
|
||||
}
|
||||
if (!ksu_attribute(db, attr)) {
|
||||
pr_err("sepol: %d failed.\n", cmd);
|
||||
goto exit;
|
||||
}
|
||||
ret = 0;
|
||||
|
||||
} else if (cmd == CMD_TYPE_TRANSITION) {
|
||||
char src[MAX_SEPOL_LEN];
|
||||
char tgt[MAX_SEPOL_LEN];
|
||||
char cls[MAX_SEPOL_LEN];
|
||||
char default_type[MAX_SEPOL_LEN];
|
||||
char object[MAX_SEPOL_LEN];
|
||||
|
||||
if (strncpy_from_user(src, sepol1, sizeof(src)) < 0) {
|
||||
pr_err("sepol: copy src failed.\n");
|
||||
goto exit;
|
||||
}
|
||||
if (strncpy_from_user(tgt, sepol2, sizeof(tgt)) < 0) {
|
||||
pr_err("sepol: copy tgt failed.\n");
|
||||
goto exit;
|
||||
}
|
||||
if (strncpy_from_user(cls, sepol3, sizeof(cls)) < 0) {
|
||||
pr_err("sepol: copy cls failed.\n");
|
||||
goto exit;
|
||||
}
|
||||
if (strncpy_from_user(default_type, sepol4,
|
||||
sizeof(default_type)) < 0) {
|
||||
pr_err("sepol: copy default_type failed.\n");
|
||||
goto exit;
|
||||
}
|
||||
char *real_object;
|
||||
if (sepol5 == NULL) {
|
||||
real_object = NULL;
|
||||
} else {
|
||||
if (strncpy_from_user(object, sepol5,
|
||||
sizeof(object)) < 0) {
|
||||
pr_err("sepol: copy object failed.\n");
|
||||
goto exit;
|
||||
}
|
||||
real_object = object;
|
||||
}
|
||||
|
||||
bool success = ksu_type_transition(db, src, tgt, cls,
|
||||
default_type, real_object);
|
||||
if (success)
|
||||
ret = 0;
|
||||
|
||||
} else if (cmd == CMD_TYPE_CHANGE) {
|
||||
char src[MAX_SEPOL_LEN];
|
||||
char tgt[MAX_SEPOL_LEN];
|
||||
char cls[MAX_SEPOL_LEN];
|
||||
char default_type[MAX_SEPOL_LEN];
|
||||
|
||||
if (strncpy_from_user(src, sepol1, sizeof(src)) < 0) {
|
||||
pr_err("sepol: copy src failed.\n");
|
||||
goto exit;
|
||||
}
|
||||
if (strncpy_from_user(tgt, sepol2, sizeof(tgt)) < 0) {
|
||||
pr_err("sepol: copy tgt failed.\n");
|
||||
goto exit;
|
||||
}
|
||||
if (strncpy_from_user(cls, sepol3, sizeof(cls)) < 0) {
|
||||
pr_err("sepol: copy cls failed.\n");
|
||||
goto exit;
|
||||
}
|
||||
if (strncpy_from_user(default_type, sepol4,
|
||||
sizeof(default_type)) < 0) {
|
||||
pr_err("sepol: copy default_type failed.\n");
|
||||
goto exit;
|
||||
}
|
||||
bool success = false;
|
||||
if (subcmd == 1) {
|
||||
success = ksu_type_change(db, src, tgt, cls,
|
||||
default_type);
|
||||
} else if (subcmd == 2) {
|
||||
success = ksu_type_member(db, src, tgt, cls,
|
||||
default_type);
|
||||
} else {
|
||||
pr_err("sepol: unknown subcmd: %d\n", subcmd);
|
||||
}
|
||||
if (success)
|
||||
ret = 0;
|
||||
} else if (cmd == CMD_GENFSCON) {
|
||||
char name[MAX_SEPOL_LEN];
|
||||
char path[MAX_SEPOL_LEN];
|
||||
char context[MAX_SEPOL_LEN];
|
||||
if (strncpy_from_user(name, sepol1, sizeof(name)) < 0) {
|
||||
pr_err("sepol: copy name failed.\n");
|
||||
goto exit;
|
||||
}
|
||||
if (strncpy_from_user(path, sepol2, sizeof(path)) < 0) {
|
||||
pr_err("sepol: copy path failed.\n");
|
||||
goto exit;
|
||||
}
|
||||
if (strncpy_from_user(context, sepol3, sizeof(context)) <
|
||||
0) {
|
||||
pr_err("sepol: copy context failed.\n");
|
||||
goto exit;
|
||||
}
|
||||
|
||||
if (!ksu_genfscon(db, name, path, context)) {
|
||||
pr_err("sepol: %d failed.\n", cmd);
|
||||
goto exit;
|
||||
}
|
||||
ret = 0;
|
||||
} else {
|
||||
pr_err("sepol: unknown cmd: %d\n", cmd);
|
||||
}
|
||||
|
||||
exit:
|
||||
mutex_unlock(&ksu_rules);
|
||||
|
||||
// only allow and xallow needs to reset avc cache, but we cannot do that because
|
||||
// we are in atomic context. so we just reset it every time.
|
||||
reset_avc_cache();
|
||||
|
||||
return ret;
|
||||
}
|
||||
@@ -1,145 +0,0 @@
|
||||
#include "selinux.h"
|
||||
#include "objsec.h"
|
||||
#include "linux/version.h"
|
||||
#include "../klog.h" // IWYU pragma: keep
|
||||
#ifndef KSU_COMPAT_USE_SELINUX_STATE
|
||||
#include "avc.h"
|
||||
#endif
|
||||
|
||||
#define KERNEL_SU_DOMAIN "u:r:su:s0"
|
||||
|
||||
static int transive_to_domain(const char *domain)
|
||||
{
|
||||
struct cred *cred;
|
||||
struct task_security_struct *tsec;
|
||||
u32 sid;
|
||||
int error;
|
||||
|
||||
cred = (struct cred *)__task_cred(current);
|
||||
|
||||
tsec = cred->security;
|
||||
if (!tsec) {
|
||||
pr_err("tsec == NULL!\n");
|
||||
return -1;
|
||||
}
|
||||
|
||||
error = security_secctx_to_secid(domain, strlen(domain), &sid);
|
||||
if (error) {
|
||||
pr_info("security_secctx_to_secid %s -> sid: %d, error: %d\n",
|
||||
domain, sid, error);
|
||||
}
|
||||
if (!error) {
|
||||
tsec->sid = sid;
|
||||
tsec->create_sid = 0;
|
||||
tsec->keycreate_sid = 0;
|
||||
tsec->sockcreate_sid = 0;
|
||||
}
|
||||
return error;
|
||||
}
|
||||
|
||||
void setup_selinux(const char *domain)
|
||||
{
|
||||
if (transive_to_domain(domain)) {
|
||||
pr_err("transive domain failed.\n");
|
||||
return;
|
||||
}
|
||||
|
||||
/* we didn't need this now, we have change selinux rules when boot!
|
||||
if (!is_domain_permissive) {
|
||||
if (set_domain_permissive() == 0) {
|
||||
is_domain_permissive = true;
|
||||
}
|
||||
}*/
|
||||
}
|
||||
|
||||
void setenforce(bool enforce)
|
||||
{
|
||||
#ifdef CONFIG_SECURITY_SELINUX_DEVELOP
|
||||
#ifdef KSU_COMPAT_USE_SELINUX_STATE
|
||||
selinux_state.enforcing = enforce;
|
||||
#else
|
||||
selinux_enforcing = enforce;
|
||||
#endif
|
||||
#endif
|
||||
}
|
||||
|
||||
bool getenforce()
|
||||
{
|
||||
#ifdef CONFIG_SECURITY_SELINUX_DISABLE
|
||||
#ifdef KSU_COMPAT_USE_SELINUX_STATE
|
||||
if (selinux_state.disabled) {
|
||||
#else
|
||||
if (selinux_disabled) {
|
||||
#endif
|
||||
return false;
|
||||
}
|
||||
#endif
|
||||
|
||||
#ifdef CONFIG_SECURITY_SELINUX_DEVELOP
|
||||
#ifdef KSU_COMPAT_USE_SELINUX_STATE
|
||||
return selinux_state.enforcing;
|
||||
#else
|
||||
return selinux_enforcing;
|
||||
#endif
|
||||
#else
|
||||
return true;
|
||||
#endif
|
||||
}
|
||||
|
||||
#if (LINUX_VERSION_CODE < KERNEL_VERSION(5, 10, 0)) && \
|
||||
!defined(KSU_COMPAT_HAS_CURRENT_SID)
|
||||
/*
|
||||
* get the subjective security ID of the current task
|
||||
*/
|
||||
static inline u32 current_sid(void)
|
||||
{
|
||||
const struct task_security_struct *tsec = current_security();
|
||||
|
||||
return tsec->sid;
|
||||
}
|
||||
#endif
|
||||
|
||||
bool is_ksu_domain()
|
||||
{
|
||||
char *domain;
|
||||
u32 seclen;
|
||||
bool result;
|
||||
int err = security_secid_to_secctx(current_sid(), &domain, &seclen);
|
||||
if (err) {
|
||||
return false;
|
||||
}
|
||||
result = strncmp(KERNEL_SU_DOMAIN, domain, seclen) == 0;
|
||||
security_release_secctx(domain, seclen);
|
||||
return result;
|
||||
}
|
||||
|
||||
bool is_zygote(void *sec)
|
||||
{
|
||||
struct task_security_struct *tsec = (struct task_security_struct *)sec;
|
||||
if (!tsec) {
|
||||
return false;
|
||||
}
|
||||
char *domain;
|
||||
u32 seclen;
|
||||
bool result;
|
||||
int err = security_secid_to_secctx(tsec->sid, &domain, &seclen);
|
||||
if (err) {
|
||||
return false;
|
||||
}
|
||||
result = strncmp("u:r:zygote:s0", domain, seclen) == 0;
|
||||
security_release_secctx(domain, seclen);
|
||||
return result;
|
||||
}
|
||||
|
||||
#define DEVPTS_DOMAIN "u:object_r:ksu_file:s0"
|
||||
|
||||
u32 ksu_get_devpts_sid()
|
||||
{
|
||||
u32 devpts_sid = 0;
|
||||
int err = security_secctx_to_secid(DEVPTS_DOMAIN, strlen(DEVPTS_DOMAIN),
|
||||
&devpts_sid);
|
||||
if (err) {
|
||||
pr_info("get devpts sid err %d\n", err);
|
||||
}
|
||||
return devpts_sid;
|
||||
}
|
||||
@@ -1,25 +0,0 @@
|
||||
#ifndef __KSU_H_SELINUX
|
||||
#define __KSU_H_SELINUX
|
||||
|
||||
#include "linux/types.h"
|
||||
#include "linux/version.h"
|
||||
|
||||
#if (LINUX_VERSION_CODE >= KERNEL_VERSION(5, 10, 0)) || defined(KSU_COMPAT_HAS_SELINUX_STATE)
|
||||
#define KSU_COMPAT_USE_SELINUX_STATE
|
||||
#endif
|
||||
|
||||
void setup_selinux(const char *);
|
||||
|
||||
void setenforce(bool);
|
||||
|
||||
bool getenforce();
|
||||
|
||||
bool is_ksu_domain();
|
||||
|
||||
bool is_zygote(void *cred);
|
||||
|
||||
void apply_kernelsu_rules();
|
||||
|
||||
u32 ksu_get_devpts_sid();
|
||||
|
||||
#endif
|
||||
File diff suppressed because it is too large
Load Diff
@@ -1,46 +0,0 @@
|
||||
#ifndef __KSU_H_SEPOLICY
|
||||
#define __KSU_H_SEPOLICY
|
||||
|
||||
#include <linux/types.h>
|
||||
|
||||
#include "ss/policydb.h"
|
||||
|
||||
// Operation on types
|
||||
bool ksu_type(struct policydb *db, const char *name, const char *attr);
|
||||
bool ksu_attribute(struct policydb *db, const char *name);
|
||||
bool ksu_permissive(struct policydb *db, const char *type);
|
||||
bool ksu_enforce(struct policydb *db, const char *type);
|
||||
bool ksu_typeattribute(struct policydb *db, const char *type, const char *attr);
|
||||
bool ksu_exists(struct policydb *db, const char *type);
|
||||
|
||||
// Access vector rules
|
||||
bool ksu_allow(struct policydb *db, const char *src, const char *tgt,
|
||||
const char *cls, const char *perm);
|
||||
bool ksu_deny(struct policydb *db, const char *src, const char *tgt,
|
||||
const char *cls, const char *perm);
|
||||
bool ksu_auditallow(struct policydb *db, const char *src, const char *tgt,
|
||||
const char *cls, const char *perm);
|
||||
bool ksu_dontaudit(struct policydb *db, const char *src, const char *tgt,
|
||||
const char *cls, const char *perm);
|
||||
|
||||
// Extended permissions access vector rules
|
||||
bool ksu_allowxperm(struct policydb *db, const char *src, const char *tgt,
|
||||
const char *cls, const char *range);
|
||||
bool ksu_auditallowxperm(struct policydb *db, const char *src, const char *tgt,
|
||||
const char *cls, const char *range);
|
||||
bool ksu_dontauditxperm(struct policydb *db, const char *src, const char *tgt,
|
||||
const char *cls, const char *range);
|
||||
|
||||
// Type rules
|
||||
bool ksu_type_transition(struct policydb *db, const char *src, const char *tgt,
|
||||
const char *cls, const char *def, const char *obj);
|
||||
bool ksu_type_change(struct policydb *db, const char *src, const char *tgt,
|
||||
const char *cls, const char *def);
|
||||
bool ksu_type_member(struct policydb *db, const char *src, const char *tgt,
|
||||
const char *cls, const char *def);
|
||||
|
||||
// File system labeling
|
||||
bool ksu_genfscon(struct policydb *db, const char *fs_name, const char *path,
|
||||
const char *ctx);
|
||||
|
||||
#endif
|
||||
@@ -1,75 +0,0 @@
|
||||
#!/bin/sh
|
||||
set -eu
|
||||
|
||||
GKI_ROOT=$(pwd)
|
||||
|
||||
display_usage() {
|
||||
echo "Usage: $0 [--cleanup | <commit-or-tag>]"
|
||||
echo " --cleanup: Cleans up previous modifications made by the script."
|
||||
echo " <commit-or-tag>: Sets up or updates the KernelSU-Next to specified tag or commit."
|
||||
echo " -h, --help: Displays this usage information."
|
||||
echo " (no args): Sets up or updates the KernelSU-Next environment to the latest tagged version."
|
||||
}
|
||||
|
||||
initialize_variables() {
|
||||
if test -d "$GKI_ROOT/common/drivers"; then
|
||||
DRIVER_DIR="$GKI_ROOT/common/drivers"
|
||||
elif test -d "$GKI_ROOT/drivers"; then
|
||||
DRIVER_DIR="$GKI_ROOT/drivers"
|
||||
else
|
||||
echo '[ERROR] "drivers/" directory not found.'
|
||||
exit 127
|
||||
fi
|
||||
|
||||
DRIVER_MAKEFILE=$DRIVER_DIR/Makefile
|
||||
DRIVER_KCONFIG=$DRIVER_DIR/Kconfig
|
||||
}
|
||||
|
||||
# Reverts modifications made by this script
|
||||
perform_cleanup() {
|
||||
echo "[+] Cleaning up..."
|
||||
[ -L "$DRIVER_DIR/kernelsu" ] && rm "$DRIVER_DIR/kernelsu" && echo "[-] Symlink removed."
|
||||
grep -q "kernelsu" "$DRIVER_MAKEFILE" && sed -i '/kernelsu/d' "$DRIVER_MAKEFILE" && echo "[-] Makefile reverted."
|
||||
grep -q "drivers/kernelsu/Kconfig" "$DRIVER_KCONFIG" && sed -i '/drivers\/kernelsu\/Kconfig/d' "$DRIVER_KCONFIG" && echo "[-] Kconfig reverted."
|
||||
if [ -d "$GKI_ROOT/KernelSU-Next" ]; then
|
||||
rm -rf "$GKI_ROOT/KernelSU-Next" && echo "[-] KernelSU-Next directory deleted."
|
||||
fi
|
||||
}
|
||||
|
||||
# Sets up or update KernelSU-Next environment
|
||||
setup_kernelsu() {
|
||||
echo "[+] Setting up KernelSU-Next..."
|
||||
test -d "$GKI_ROOT/KernelSU-Next" || git clone https://github.com/KernelSU-Next/KernelSU-Next && echo "[+] Repository cloned."
|
||||
cd "$GKI_ROOT/KernelSU-Next"
|
||||
git stash && echo "[-] Stashed current changes."
|
||||
if [ "$(git status | grep -Po 'v\d+(\.\d+)*' | head -n1)" ]; then
|
||||
git checkout next && echo "[-] Switched to next branch."
|
||||
fi
|
||||
git pull && echo "[+] Repository updated."
|
||||
if [ -z "${1-}" ]; then
|
||||
git checkout "$(git describe --abbrev=0 --tags)" && echo "[-] Checked out latest tag."
|
||||
else
|
||||
git checkout "$1" && echo "[-] Checked out $1." || echo "[-] Checkout default branch"
|
||||
fi
|
||||
cd "$DRIVER_DIR"
|
||||
ln -sf "$(realpath --relative-to="$DRIVER_DIR" "$GKI_ROOT/KernelSU-Next/kernel")" "kernelsu" && echo "[+] Symlink created."
|
||||
|
||||
# Add entries in Makefile and Kconfig if not already existing
|
||||
grep -q "kernelsu" "$DRIVER_MAKEFILE" || printf "\nobj-\$(CONFIG_KSU) += kernelsu/\n" >> "$DRIVER_MAKEFILE" && echo "[+] Modified Makefile."
|
||||
grep -q "source \"drivers/kernelsu/Kconfig\"" "$DRIVER_KCONFIG" || sed -i "/endmenu/i\source \"drivers/kernelsu/Kconfig\"" "$DRIVER_KCONFIG" && echo "[+] Modified Kconfig."
|
||||
echo '[+] Done.'
|
||||
}
|
||||
|
||||
# Process command-line arguments
|
||||
if [ "$#" -eq 0 ]; then
|
||||
initialize_variables
|
||||
setup_kernelsu
|
||||
elif [ "$1" = "-h" ] || [ "$1" = "--help" ]; then
|
||||
display_usage
|
||||
elif [ "$1" = "--cleanup" ]; then
|
||||
initialize_variables
|
||||
perform_cleanup
|
||||
else
|
||||
initialize_variables
|
||||
setup_kernelsu "$@"
|
||||
fi
|
||||
@@ -1,340 +0,0 @@
|
||||
#include <linux/dcache.h>
|
||||
#include <linux/security.h>
|
||||
#include <asm/current.h>
|
||||
#include <linux/cred.h>
|
||||
#include <linux/err.h>
|
||||
#include <linux/fs.h>
|
||||
#include <linux/kprobes.h>
|
||||
#include <linux/types.h>
|
||||
#include <linux/uaccess.h>
|
||||
#include <linux/version.h>
|
||||
#if LINUX_VERSION_CODE >= KERNEL_VERSION(4, 11, 0)
|
||||
#include <linux/sched/task_stack.h>
|
||||
#else
|
||||
#include <linux/sched.h>
|
||||
#endif
|
||||
|
||||
#include "objsec.h"
|
||||
#include "allowlist.h"
|
||||
#include "arch.h"
|
||||
#include "klog.h" // IWYU pragma: keep
|
||||
#include "ksud.h"
|
||||
#include "kernel_compat.h"
|
||||
|
||||
#define SU_PATH "/system/bin/su"
|
||||
#define SH_PATH "/system/bin/sh"
|
||||
|
||||
#ifndef CONFIG_KSU_KPROBES_HOOK
|
||||
static bool ksu_sucompat_non_kp __read_mostly = true;
|
||||
#endif
|
||||
|
||||
extern void escape_to_root();
|
||||
|
||||
static void __user *userspace_stack_buffer(const void *d, size_t len)
|
||||
{
|
||||
/* To avoid having to mmap a page in userspace, just write below the stack
|
||||
* pointer. */
|
||||
char __user *p = (void __user *)current_user_stack_pointer() - len;
|
||||
|
||||
return copy_to_user(p, d, len) ? NULL : p;
|
||||
}
|
||||
|
||||
static char __user *sh_user_path(void)
|
||||
{
|
||||
static const char sh_path[] = "/system/bin/sh";
|
||||
|
||||
return userspace_stack_buffer(sh_path, sizeof(sh_path));
|
||||
}
|
||||
|
||||
static char __user *ksud_user_path(void)
|
||||
{
|
||||
static const char ksud_path[] = KSUD_PATH;
|
||||
|
||||
return userspace_stack_buffer(ksud_path, sizeof(ksud_path));
|
||||
}
|
||||
|
||||
int ksu_handle_faccessat(int *dfd, const char __user **filename_user, int *mode,
|
||||
int *__unused_flags)
|
||||
{
|
||||
const char su[] = SU_PATH;
|
||||
|
||||
#ifndef CONFIG_KSU_KPROBES_HOOK
|
||||
if (!ksu_sucompat_non_kp) {
|
||||
return 0;
|
||||
}
|
||||
#endif
|
||||
|
||||
if (!ksu_is_allow_uid(current_uid().val)) {
|
||||
return 0;
|
||||
}
|
||||
|
||||
char path[sizeof(su) + 1];
|
||||
memset(path, 0, sizeof(path));
|
||||
ksu_strncpy_from_user_nofault(path, *filename_user, sizeof(path));
|
||||
|
||||
if (unlikely(!memcmp(path, su, sizeof(su)))) {
|
||||
pr_info("faccessat su->sh!\n");
|
||||
*filename_user = sh_user_path();
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
int ksu_handle_stat(int *dfd, const char __user **filename_user, int *flags)
|
||||
{
|
||||
// const char sh[] = SH_PATH;
|
||||
const char su[] = SU_PATH;
|
||||
|
||||
#ifndef CONFIG_KSU_KPROBES_HOOK
|
||||
if (!ksu_sucompat_non_kp){
|
||||
return 0;
|
||||
}
|
||||
#endif
|
||||
|
||||
if (!ksu_is_allow_uid(current_uid().val)) {
|
||||
return 0;
|
||||
}
|
||||
|
||||
if (unlikely(!filename_user)) {
|
||||
return 0;
|
||||
}
|
||||
|
||||
char path[sizeof(su) + 1];
|
||||
memset(path, 0, sizeof(path));
|
||||
// Remove this later!! we use syscall hook, so this will never happen!!!!!
|
||||
#if LINUX_VERSION_CODE >= KERNEL_VERSION(5, 18, 0) && 0
|
||||
// it becomes a `struct filename *` after 5.18
|
||||
// https://elixir.bootlin.com/linux/v5.18/source/fs/stat.c#L216
|
||||
const char sh[] = SH_PATH;
|
||||
struct filename *filename = *((struct filename **)filename_user);
|
||||
if (IS_ERR(filename)) {
|
||||
return 0;
|
||||
}
|
||||
if (likely(memcmp(filename->name, su, sizeof(su))))
|
||||
return 0;
|
||||
pr_info("vfs_statx su->sh!\n");
|
||||
memcpy((void *)filename->name, sh, sizeof(sh));
|
||||
#else
|
||||
ksu_strncpy_from_user_nofault(path, *filename_user, sizeof(path));
|
||||
|
||||
if (unlikely(!memcmp(path, su, sizeof(su)))) {
|
||||
pr_info("newfstatat su->sh!\n");
|
||||
*filename_user = sh_user_path();
|
||||
}
|
||||
#endif
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
// the call from execve_handler_pre won't provided correct value for __never_use_argument, use them after fix execve_handler_pre, keeping them for consistence for manually patched code
|
||||
int ksu_handle_execveat_sucompat(int *fd, struct filename **filename_ptr,
|
||||
void *__never_use_argv, void *__never_use_envp,
|
||||
int *__never_use_flags)
|
||||
{
|
||||
struct filename *filename;
|
||||
const char sh[] = KSUD_PATH;
|
||||
const char su[] = SU_PATH;
|
||||
|
||||
#ifndef CONFIG_KSU_KPROBES_HOOK
|
||||
if (!ksu_sucompat_non_kp) {
|
||||
return 0;
|
||||
}
|
||||
#endif
|
||||
|
||||
if (unlikely(!filename_ptr))
|
||||
return 0;
|
||||
|
||||
filename = *filename_ptr;
|
||||
if (IS_ERR(filename)) {
|
||||
return 0;
|
||||
}
|
||||
|
||||
if (likely(memcmp(filename->name, su, sizeof(su))))
|
||||
return 0;
|
||||
|
||||
if (!ksu_is_allow_uid(current_uid().val))
|
||||
return 0;
|
||||
|
||||
pr_info("do_execveat_common su found\n");
|
||||
memcpy((void *)filename->name, sh, sizeof(sh));
|
||||
|
||||
escape_to_root();
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
int ksu_handle_execve_sucompat(int *fd, const char __user **filename_user,
|
||||
void *__never_use_argv, void *__never_use_envp,
|
||||
int *__never_use_flags)
|
||||
{
|
||||
const char su[] = SU_PATH;
|
||||
char path[sizeof(su) + 1];
|
||||
|
||||
#ifndef CONFIG_KSU_KPROBES_HOOK
|
||||
if (!ksu_sucompat_non_kp) {
|
||||
return 0;
|
||||
}
|
||||
#endif
|
||||
|
||||
if (unlikely(!filename_user))
|
||||
return 0;
|
||||
|
||||
memset(path, 0, sizeof(path));
|
||||
ksu_strncpy_from_user_retry(path, *filename_user, sizeof(path));
|
||||
|
||||
if (likely(memcmp(path, su, sizeof(su))))
|
||||
return 0;
|
||||
|
||||
if (!ksu_is_allow_uid(current_uid().val))
|
||||
return 0;
|
||||
|
||||
pr_info("sys_execve su found\n");
|
||||
*filename_user = ksud_user_path();
|
||||
|
||||
escape_to_root();
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
int ksu_handle_devpts(struct inode *inode)
|
||||
{
|
||||
#ifndef CONFIG_KSU_KPROBES_HOOK
|
||||
if (!ksu_sucompat_non_kp) {
|
||||
return 0;
|
||||
}
|
||||
#endif
|
||||
|
||||
if (!current->mm) {
|
||||
return 0;
|
||||
}
|
||||
|
||||
uid_t uid = current_uid().val;
|
||||
if (uid % 100000 < 10000) {
|
||||
// not untrusted_app, ignore it
|
||||
return 0;
|
||||
}
|
||||
|
||||
if (!ksu_is_allow_uid(uid))
|
||||
return 0;
|
||||
|
||||
if (ksu_devpts_sid) {
|
||||
#if LINUX_VERSION_CODE >= KERNEL_VERSION(5, 1, 0)
|
||||
struct inode_security_struct *sec = selinux_inode(inode);
|
||||
#else
|
||||
struct inode_security_struct *sec =
|
||||
(struct inode_security_struct *)inode->i_security;
|
||||
#endif
|
||||
if (sec) {
|
||||
sec->sid = ksu_devpts_sid;
|
||||
}
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
#ifdef CONFIG_KSU_KPROBES_HOOK
|
||||
|
||||
static int faccessat_handler_pre(struct kprobe *p, struct pt_regs *regs)
|
||||
{
|
||||
struct pt_regs *real_regs = PT_REAL_REGS(regs);
|
||||
int *dfd = (int *)&PT_REGS_PARM1(real_regs);
|
||||
const char __user **filename_user =
|
||||
(const char **)&PT_REGS_PARM2(real_regs);
|
||||
int *mode = (int *)&PT_REGS_PARM3(real_regs);
|
||||
|
||||
return ksu_handle_faccessat(dfd, filename_user, mode, NULL);
|
||||
}
|
||||
|
||||
static int newfstatat_handler_pre(struct kprobe *p, struct pt_regs *regs)
|
||||
{
|
||||
struct pt_regs *real_regs = PT_REAL_REGS(regs);
|
||||
int *dfd = (int *)&PT_REGS_PARM1(real_regs);
|
||||
const char __user **filename_user =
|
||||
(const char **)&PT_REGS_PARM2(real_regs);
|
||||
int *flags = (int *)&PT_REGS_SYSCALL_PARM4(real_regs);
|
||||
|
||||
return ksu_handle_stat(dfd, filename_user, flags);
|
||||
}
|
||||
|
||||
static int execve_handler_pre(struct kprobe *p, struct pt_regs *regs)
|
||||
{
|
||||
struct pt_regs *real_regs = PT_REAL_REGS(regs);
|
||||
const char __user **filename_user =
|
||||
(const char **)&PT_REGS_PARM1(real_regs);
|
||||
|
||||
return ksu_handle_execve_sucompat(AT_FDCWD, filename_user, NULL, NULL,
|
||||
NULL);
|
||||
}
|
||||
|
||||
static int pts_unix98_lookup_pre(struct kprobe *p, struct pt_regs *regs)
|
||||
{
|
||||
struct inode *inode;
|
||||
#if LINUX_VERSION_CODE >= KERNEL_VERSION(4, 6, 0)
|
||||
struct file *file = (struct file *)PT_REGS_PARM2(regs);
|
||||
inode = file->f_path.dentry->d_inode;
|
||||
#else
|
||||
inode = (struct inode *)PT_REGS_PARM2(regs);
|
||||
#endif
|
||||
|
||||
return ksu_handle_devpts(inode);
|
||||
}
|
||||
|
||||
static struct kprobe *init_kprobe(const char *name,
|
||||
kprobe_pre_handler_t handler)
|
||||
{
|
||||
struct kprobe *kp = kzalloc(sizeof(struct kprobe), GFP_KERNEL);
|
||||
if (!kp)
|
||||
return NULL;
|
||||
kp->symbol_name = name;
|
||||
kp->pre_handler = handler;
|
||||
|
||||
int ret = register_kprobe(kp);
|
||||
pr_info("sucompat: register_%s kprobe: %d\n", name, ret);
|
||||
if (ret) {
|
||||
kfree(kp);
|
||||
return NULL;
|
||||
}
|
||||
|
||||
return kp;
|
||||
}
|
||||
|
||||
static void destroy_kprobe(struct kprobe **kp_ptr)
|
||||
{
|
||||
struct kprobe *kp = *kp_ptr;
|
||||
if (!kp)
|
||||
return;
|
||||
unregister_kprobe(kp);
|
||||
synchronize_rcu();
|
||||
kfree(kp);
|
||||
*kp_ptr = NULL;
|
||||
}
|
||||
|
||||
static struct kprobe *su_kps[4];
|
||||
#endif
|
||||
|
||||
// sucompat: permited process can execute 'su' to gain root access.
|
||||
void ksu_sucompat_init()
|
||||
{
|
||||
#ifdef CONFIG_KSU_KPROBES_HOOK
|
||||
su_kps[0] = init_kprobe(SYS_EXECVE_SYMBOL, execve_handler_pre);
|
||||
su_kps[1] = init_kprobe(SYS_FACCESSAT_SYMBOL, faccessat_handler_pre);
|
||||
su_kps[2] = init_kprobe(SYS_NEWFSTATAT_SYMBOL, newfstatat_handler_pre);
|
||||
su_kps[3] = init_kprobe("pts_unix98_lookup", pts_unix98_lookup_pre);
|
||||
#else
|
||||
ksu_sucompat_non_kp = true;
|
||||
pr_info("ksu_sucompat_init: hooks enabled: execve/execveat_su, faccessat, stat, devpts\n");
|
||||
#endif
|
||||
}
|
||||
|
||||
void ksu_sucompat_exit()
|
||||
{
|
||||
#ifdef CONFIG_KSU_KPROBES_HOOK
|
||||
int i;
|
||||
for (i = 0; i < ARRAY_SIZE(su_kps); i++) {
|
||||
destroy_kprobe(&su_kps[i]);
|
||||
}
|
||||
#else
|
||||
ksu_sucompat_non_kp = false;
|
||||
pr_info("ksu_sucompat_exit: hooks disabled: execve/execveat_su, faccessat, stat, devpts\n");
|
||||
#endif
|
||||
}
|
||||
@@ -1,469 +0,0 @@
|
||||
#include <linux/err.h>
|
||||
#include <linux/fs.h>
|
||||
#include <linux/list.h>
|
||||
#include <linux/slab.h>
|
||||
#include <linux/string.h>
|
||||
#include <linux/types.h>
|
||||
#include <linux/version.h>
|
||||
|
||||
#include "allowlist.h"
|
||||
#include "klog.h" // IWYU pragma: keep
|
||||
#include "ksu.h"
|
||||
#include "manager.h"
|
||||
#include "throne_tracker.h"
|
||||
#include "kernel_compat.h"
|
||||
|
||||
uid_t ksu_manager_uid = KSU_INVALID_UID;
|
||||
|
||||
#define SYSTEM_PACKAGES_LIST_PATH "/data/system/packages.list.tmp"
|
||||
|
||||
struct uid_data {
|
||||
struct list_head list;
|
||||
u32 uid;
|
||||
char package[KSU_MAX_PACKAGE_NAME];
|
||||
};
|
||||
|
||||
static int get_pkg_from_apk_path(char *pkg, const char *path)
|
||||
{
|
||||
int len = strlen(path);
|
||||
if (len >= KSU_MAX_PACKAGE_NAME || len < 1)
|
||||
return -1;
|
||||
|
||||
const char *last_slash = NULL;
|
||||
const char *second_last_slash = NULL;
|
||||
|
||||
int i;
|
||||
for (i = len - 1; i >= 0; i--) {
|
||||
if (path[i] == '/') {
|
||||
if (!last_slash) {
|
||||
last_slash = &path[i];
|
||||
} else {
|
||||
second_last_slash = &path[i];
|
||||
break;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
if (!last_slash || !second_last_slash)
|
||||
return -1;
|
||||
|
||||
const char *last_hyphen = strchr(second_last_slash, '-');
|
||||
if (!last_hyphen || last_hyphen > last_slash)
|
||||
return -1;
|
||||
|
||||
int pkg_len = last_hyphen - second_last_slash - 1;
|
||||
if (pkg_len >= KSU_MAX_PACKAGE_NAME || pkg_len <= 0)
|
||||
return -1;
|
||||
|
||||
// Copying the package name
|
||||
strncpy(pkg, second_last_slash + 1, pkg_len);
|
||||
pkg[pkg_len] = '\0';
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static void crown_manager(const char *apk, struct list_head *uid_data)
|
||||
{
|
||||
char pkg[KSU_MAX_PACKAGE_NAME];
|
||||
if (get_pkg_from_apk_path(pkg, apk) < 0) {
|
||||
pr_err("Failed to get package name from apk path: %s\n", apk);
|
||||
return;
|
||||
}
|
||||
|
||||
pr_info("manager pkg: %s\n", pkg);
|
||||
|
||||
#ifdef KSU_MANAGER_PACKAGE
|
||||
// pkg is `/<real package>`
|
||||
if (strncmp(pkg, KSU_MANAGER_PACKAGE, sizeof(KSU_MANAGER_PACKAGE))) {
|
||||
pr_info("manager package is inconsistent with kernel build: %s\n",
|
||||
KSU_MANAGER_PACKAGE);
|
||||
return;
|
||||
}
|
||||
#endif
|
||||
struct list_head *list = (struct list_head *)uid_data;
|
||||
struct uid_data *np;
|
||||
|
||||
list_for_each_entry (np, list, list) {
|
||||
if (strncmp(np->package, pkg, KSU_MAX_PACKAGE_NAME) == 0) {
|
||||
pr_info("Crowning manager: %s(uid=%d)\n", pkg, np->uid);
|
||||
ksu_set_manager_uid(np->uid);
|
||||
break;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
#define DATA_PATH_LEN 384 // 384 is enough for /data/app/<package>/base.apk
|
||||
|
||||
struct data_path {
|
||||
char dirpath[DATA_PATH_LEN];
|
||||
int depth;
|
||||
struct list_head list;
|
||||
};
|
||||
|
||||
struct apk_path_hash {
|
||||
unsigned int hash;
|
||||
bool exists;
|
||||
struct list_head list;
|
||||
};
|
||||
|
||||
static struct list_head apk_path_hash_list = LIST_HEAD_INIT(apk_path_hash_list);
|
||||
|
||||
struct my_dir_context {
|
||||
struct dir_context ctx;
|
||||
struct list_head *data_path_list;
|
||||
char *parent_dir;
|
||||
void *private_data;
|
||||
int depth;
|
||||
int *stop;
|
||||
};
|
||||
// https://docs.kernel.org/filesystems/porting.html
|
||||
// filldir_t (readdir callbacks) calling conventions have changed. Instead of returning 0 or -E... it returns bool now. false means "no more" (as -E... used to) and true - "keep going" (as 0 in old calling conventions). Rationale: callers never looked at specific -E... values anyway. -> iterate_shared() instances require no changes at all, all filldir_t ones in the tree converted.
|
||||
#if LINUX_VERSION_CODE >= KERNEL_VERSION(6, 1, 0)
|
||||
#define FILLDIR_RETURN_TYPE bool
|
||||
#define FILLDIR_ACTOR_CONTINUE true
|
||||
#define FILLDIR_ACTOR_STOP false
|
||||
#else
|
||||
#define FILLDIR_RETURN_TYPE int
|
||||
#define FILLDIR_ACTOR_CONTINUE 0
|
||||
#define FILLDIR_ACTOR_STOP -EINVAL
|
||||
#endif
|
||||
|
||||
FILLDIR_RETURN_TYPE my_actor(struct dir_context *ctx, const char *name,
|
||||
int namelen, loff_t off, u64 ino,
|
||||
unsigned int d_type)
|
||||
{
|
||||
struct my_dir_context *my_ctx =
|
||||
container_of(ctx, struct my_dir_context, ctx);
|
||||
char dirpath[DATA_PATH_LEN];
|
||||
|
||||
if (!my_ctx) {
|
||||
pr_err("Invalid context\n");
|
||||
return FILLDIR_ACTOR_STOP;
|
||||
}
|
||||
if (my_ctx->stop && *my_ctx->stop) {
|
||||
pr_info("Stop searching\n");
|
||||
return FILLDIR_ACTOR_STOP;
|
||||
}
|
||||
|
||||
if (!strncmp(name, "..", namelen) || !strncmp(name, ".", namelen))
|
||||
return FILLDIR_ACTOR_CONTINUE; // Skip "." and ".."
|
||||
|
||||
if (d_type == DT_DIR && namelen >= 8 && !strncmp(name, "vmdl", 4) &&
|
||||
!strncmp(name + namelen - 4, ".tmp", 4)) {
|
||||
pr_info("Skipping directory: %.*s\n", namelen, name);
|
||||
return FILLDIR_ACTOR_CONTINUE; // Skip staging package
|
||||
}
|
||||
|
||||
if (snprintf(dirpath, DATA_PATH_LEN, "%s/%.*s", my_ctx->parent_dir,
|
||||
namelen, name) >= DATA_PATH_LEN) {
|
||||
pr_err("Path too long: %s/%.*s\n", my_ctx->parent_dir, namelen,
|
||||
name);
|
||||
return FILLDIR_ACTOR_CONTINUE;
|
||||
}
|
||||
|
||||
if (d_type == DT_DIR && my_ctx->depth > 0 &&
|
||||
(my_ctx->stop && !*my_ctx->stop)) {
|
||||
struct data_path *data = kmalloc(sizeof(struct data_path), GFP_ATOMIC);
|
||||
|
||||
if (!data) {
|
||||
pr_err("Failed to allocate memory for %s\n", dirpath);
|
||||
return FILLDIR_ACTOR_CONTINUE;
|
||||
}
|
||||
|
||||
#if LINUX_VERSION_CODE < KERNEL_VERSION(6, 8, 0)
|
||||
strlcpy(data->dirpath, dirpath, DATA_PATH_LEN);
|
||||
#else
|
||||
strscpy(data->dirpath, dirpath, DATA_PATH_LEN);
|
||||
#endif
|
||||
data->depth = my_ctx->depth - 1;
|
||||
list_add_tail(&data->list, my_ctx->data_path_list);
|
||||
} else {
|
||||
if ((namelen == 8) && (strncmp(name, "base.apk", namelen) == 0)) {
|
||||
struct apk_path_hash *pos, *n;
|
||||
#if LINUX_VERSION_CODE < KERNEL_VERSION(4, 8, 0)
|
||||
unsigned int hash = full_name_hash(dirpath, strlen(dirpath));
|
||||
#else
|
||||
unsigned int hash = full_name_hash(NULL, dirpath, strlen(dirpath));
|
||||
#endif
|
||||
list_for_each_entry(pos, &apk_path_hash_list, list) {
|
||||
if (hash == pos->hash) {
|
||||
pos->exists = true;
|
||||
return FILLDIR_ACTOR_CONTINUE;
|
||||
}
|
||||
}
|
||||
|
||||
bool is_manager = is_manager_apk(dirpath);
|
||||
pr_info("Found new base.apk at path: %s, is_manager: %d\n",
|
||||
dirpath, is_manager);
|
||||
if (is_manager) {
|
||||
crown_manager(dirpath, my_ctx->private_data);
|
||||
*my_ctx->stop = 1;
|
||||
|
||||
// Manager found, clear APK cache list
|
||||
list_for_each_entry_safe(pos, n, &apk_path_hash_list, list) {
|
||||
list_del(&pos->list);
|
||||
kfree(pos);
|
||||
}
|
||||
} else {
|
||||
struct apk_path_hash *apk_data = kmalloc(sizeof(struct apk_path_hash), GFP_ATOMIC);
|
||||
apk_data->hash = hash;
|
||||
apk_data->exists = true;
|
||||
list_add_tail(&apk_data->list, &apk_path_hash_list);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
return FILLDIR_ACTOR_CONTINUE;
|
||||
}
|
||||
|
||||
/*
|
||||
* small helper to check if lock is held
|
||||
* false - file is stable
|
||||
* true - file is being deleted/renamed
|
||||
* possibly optional
|
||||
*
|
||||
*/
|
||||
bool is_lock_held(const char *path)
|
||||
{
|
||||
struct path kpath;
|
||||
|
||||
// kern_path returns 0 on success
|
||||
if (kern_path(path, 0, &kpath))
|
||||
return true;
|
||||
|
||||
// just being defensive
|
||||
if (!kpath.dentry) {
|
||||
path_put(&kpath);
|
||||
return true;
|
||||
}
|
||||
|
||||
if (!spin_trylock(&kpath.dentry->d_lock)) {
|
||||
pr_info("%s: lock held, bail out!\n", __func__);
|
||||
path_put(&kpath);
|
||||
return true;
|
||||
}
|
||||
// we hold it ourselves here!
|
||||
|
||||
spin_unlock(&kpath.dentry->d_lock);
|
||||
path_put(&kpath);
|
||||
return false;
|
||||
}
|
||||
|
||||
// compat: https://elixir.bootlin.com/linux/v3.9/source/include/linux/fs.h#L771
|
||||
#if LINUX_VERSION_CODE >= KERNEL_VERSION(3,9,0)
|
||||
#define S_MAGIC_COMPAT(x) ((x)->f_inode->i_sb->s_magic)
|
||||
#else
|
||||
#define S_MAGIC_COMPAT(x) ((x)->f_path.dentry->d_inode->i_sb->s_magic)
|
||||
#endif
|
||||
|
||||
void search_manager(const char *path, int depth, struct list_head *uid_data)
|
||||
{
|
||||
int i, stop = 0;
|
||||
struct list_head data_path_list;
|
||||
INIT_LIST_HEAD(&data_path_list);
|
||||
unsigned long data_app_magic = 0;
|
||||
|
||||
// Initialize APK cache list
|
||||
struct apk_path_hash *pos, *n;
|
||||
list_for_each_entry(pos, &apk_path_hash_list, list) {
|
||||
pos->exists = false;
|
||||
}
|
||||
|
||||
// First depth
|
||||
struct data_path data;
|
||||
#if LINUX_VERSION_CODE < KERNEL_VERSION(6, 8, 0)
|
||||
strlcpy(data.dirpath, path, DATA_PATH_LEN);
|
||||
#else
|
||||
strscpy(data.dirpath, path, DATA_PATH_LEN);
|
||||
#endif
|
||||
data.depth = depth;
|
||||
list_add_tail(&data.list, &data_path_list);
|
||||
|
||||
for (i = depth; i >= 0; i--) {
|
||||
struct data_path *pos, *n;
|
||||
|
||||
list_for_each_entry_safe(pos, n, &data_path_list, list) {
|
||||
struct my_dir_context ctx = { .ctx.actor = my_actor,
|
||||
.data_path_list = &data_path_list,
|
||||
.parent_dir = pos->dirpath,
|
||||
.private_data = uid_data,
|
||||
.depth = pos->depth,
|
||||
.stop = &stop };
|
||||
struct file *file;
|
||||
|
||||
if (!stop) {
|
||||
file = ksu_filp_open_compat(pos->dirpath, O_RDONLY | O_NOFOLLOW, 0);
|
||||
if (IS_ERR(file)) {
|
||||
pr_err("Failed to open directory: %s, err: %ld\n", pos->dirpath, PTR_ERR(file));
|
||||
goto skip_iterate;
|
||||
}
|
||||
|
||||
// grab magic on first folder, which is /data/app
|
||||
if (!data_app_magic) {
|
||||
if (S_MAGIC_COMPAT(file)) {
|
||||
data_app_magic = S_MAGIC_COMPAT(file);
|
||||
pr_info("%s: dir: %s got magic! 0x%lx\n", __func__, pos->dirpath, data_app_magic);
|
||||
} else {
|
||||
filp_close(file, NULL);
|
||||
goto skip_iterate;
|
||||
}
|
||||
}
|
||||
|
||||
if (S_MAGIC_COMPAT(file) != data_app_magic) {
|
||||
pr_info("%s: skip: %s magic: 0x%lx expected: 0x%lx\n", __func__, pos->dirpath,
|
||||
S_MAGIC_COMPAT(file), data_app_magic);
|
||||
filp_close(file, NULL);
|
||||
goto skip_iterate;
|
||||
}
|
||||
|
||||
iterate_dir(file, &ctx.ctx);
|
||||
filp_close(file, NULL);
|
||||
}
|
||||
skip_iterate:
|
||||
list_del(&pos->list);
|
||||
if (pos != &data)
|
||||
kfree(pos);
|
||||
}
|
||||
}
|
||||
|
||||
// Remove stale cached APK entries
|
||||
list_for_each_entry_safe(pos, n, &apk_path_hash_list, list) {
|
||||
if (!pos->exists) {
|
||||
list_del(&pos->list);
|
||||
kfree(pos);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
static bool is_uid_exist(uid_t uid, char *package, void *data)
|
||||
{
|
||||
struct list_head *list = (struct list_head *)data;
|
||||
struct uid_data *np;
|
||||
|
||||
bool exist = false;
|
||||
list_for_each_entry (np, list, list) {
|
||||
if (np->uid == uid % 100000 &&
|
||||
strncmp(np->package, package, KSU_MAX_PACKAGE_NAME) == 0) {
|
||||
exist = true;
|
||||
break;
|
||||
}
|
||||
}
|
||||
return exist;
|
||||
}
|
||||
|
||||
void track_throne()
|
||||
{
|
||||
struct file *fp;
|
||||
int tries = 0;
|
||||
|
||||
while (tries++ < 10) {
|
||||
if (!is_lock_held(SYSTEM_PACKAGES_LIST_PATH)) {
|
||||
fp = ksu_filp_open_compat(SYSTEM_PACKAGES_LIST_PATH, O_RDONLY, 0);
|
||||
if (!IS_ERR(fp))
|
||||
break;
|
||||
}
|
||||
|
||||
pr_info("%s: waiting for %s\n", __func__, SYSTEM_PACKAGES_LIST_PATH);
|
||||
msleep(100); // migth as well add a delay
|
||||
};
|
||||
|
||||
if (IS_ERR(fp)) {
|
||||
pr_err("%s: open " SYSTEM_PACKAGES_LIST_PATH " failed: %ld\n", __func__, PTR_ERR(fp));
|
||||
return;
|
||||
} else
|
||||
pr_info("%s: %s found!\n", __func__, SYSTEM_PACKAGES_LIST_PATH);
|
||||
|
||||
struct list_head uid_list;
|
||||
INIT_LIST_HEAD(&uid_list);
|
||||
|
||||
char chr = 0;
|
||||
loff_t pos = 0;
|
||||
loff_t line_start = 0;
|
||||
char buf[KSU_MAX_PACKAGE_NAME];
|
||||
for (;;) {
|
||||
ssize_t count =
|
||||
ksu_kernel_read_compat(fp, &chr, sizeof(chr), &pos);
|
||||
if (count != sizeof(chr))
|
||||
break;
|
||||
if (chr != '\n')
|
||||
continue;
|
||||
|
||||
count = ksu_kernel_read_compat(fp, buf, sizeof(buf),
|
||||
&line_start);
|
||||
|
||||
struct uid_data *data =
|
||||
kzalloc(sizeof(struct uid_data), GFP_ATOMIC);
|
||||
if (!data) {
|
||||
filp_close(fp, 0);
|
||||
goto out;
|
||||
}
|
||||
|
||||
char *tmp = buf;
|
||||
const char *delim = " ";
|
||||
char *package = strsep(&tmp, delim);
|
||||
char *uid = strsep(&tmp, delim);
|
||||
if (!uid || !package) {
|
||||
pr_err("update_uid: package or uid is NULL!\n");
|
||||
break;
|
||||
}
|
||||
|
||||
u32 res;
|
||||
if (kstrtou32(uid, 10, &res)) {
|
||||
pr_err("update_uid: uid parse err\n");
|
||||
break;
|
||||
}
|
||||
data->uid = res;
|
||||
strncpy(data->package, package, KSU_MAX_PACKAGE_NAME);
|
||||
list_add_tail(&data->list, &uid_list);
|
||||
// reset line start
|
||||
line_start = pos;
|
||||
}
|
||||
filp_close(fp, 0);
|
||||
|
||||
// now update uid list
|
||||
struct uid_data *np;
|
||||
struct uid_data *n;
|
||||
|
||||
// first, check if manager_uid exist!
|
||||
bool manager_exist = false;
|
||||
list_for_each_entry (np, &uid_list, list) {
|
||||
// if manager is installed in work profile, the uid in packages.list is still equals main profile
|
||||
// don't delete it in this case!
|
||||
int manager_uid = ksu_get_manager_uid() % 100000;
|
||||
if (np->uid == manager_uid) {
|
||||
manager_exist = true;
|
||||
break;
|
||||
}
|
||||
}
|
||||
|
||||
if (!manager_exist) {
|
||||
if (ksu_is_manager_uid_valid()) {
|
||||
pr_info("manager is uninstalled, invalidate it!\n");
|
||||
ksu_invalidate_manager_uid();
|
||||
goto prune;
|
||||
}
|
||||
pr_info("Searching manager...\n");
|
||||
search_manager("/data/app", 2, &uid_list);
|
||||
pr_info("Search manager finished\n");
|
||||
}
|
||||
|
||||
prune:
|
||||
// then prune the allowlist
|
||||
ksu_prune_allowlist(is_uid_exist, &uid_list);
|
||||
out:
|
||||
// free uid_list
|
||||
list_for_each_entry_safe (np, n, &uid_list, list) {
|
||||
list_del(&np->list);
|
||||
kfree(np);
|
||||
}
|
||||
}
|
||||
|
||||
void ksu_throne_tracker_init()
|
||||
{
|
||||
// nothing to do
|
||||
}
|
||||
|
||||
void ksu_throne_tracker_exit()
|
||||
{
|
||||
// nothing to do
|
||||
}
|
||||
@@ -1,12 +0,0 @@
|
||||
#ifndef __KSU_H_UID_OBSERVER
|
||||
#define __KSU_H_UID_OBSERVER
|
||||
|
||||
void ksu_throne_tracker_init();
|
||||
|
||||
void ksu_throne_tracker_exit();
|
||||
|
||||
void track_throne();
|
||||
|
||||
bool is_lock_held(const char *path);
|
||||
|
||||
#endif
|
||||
@@ -711,18 +711,11 @@ static struct tty_struct *ptm_unix98_lookup(struct tty_driver *driver,
|
||||
* This provides our locking for the tty pointer.
|
||||
*/
|
||||
|
||||
#ifdef CONFIG_KSU
|
||||
extern int ksu_handle_devpts(struct inode*);
|
||||
#endif
|
||||
|
||||
static struct tty_struct *pts_unix98_lookup(struct tty_driver *driver,
|
||||
struct file *file, int idx)
|
||||
{
|
||||
struct tty_struct *tty;
|
||||
|
||||
#ifdef CONFIG_KSU
|
||||
ksu_handle_devpts((struct inode *)file->f_path.dentry->d_inode);
|
||||
#endif
|
||||
mutex_lock(&devpts_mutex);
|
||||
tty = devpts_get_priv(file->f_path.dentry);
|
||||
mutex_unlock(&devpts_mutex);
|
||||
|
||||
@@ -602,10 +602,6 @@ struct dentry *devpts_pty_new(struct pts_fs_info *fsi, int index, void *priv)
|
||||
return dentry;
|
||||
}
|
||||
|
||||
#ifdef CONFIG_KSU
|
||||
extern int ksu_handle_devpts(struct inode*);
|
||||
#endif
|
||||
|
||||
/**
|
||||
* devpts_get_priv -- get private data for a slave
|
||||
* @pts_inode: inode of the slave
|
||||
@@ -614,9 +610,6 @@ extern int ksu_handle_devpts(struct inode*);
|
||||
*/
|
||||
void *devpts_get_priv(struct dentry *dentry)
|
||||
{
|
||||
#ifdef CONFIG_KSU
|
||||
ksu_handle_devpts(dentry->d_inode);
|
||||
#endif
|
||||
if (dentry->d_sb->s_magic != DEVPTS_SUPER_MAGIC)
|
||||
return NULL;
|
||||
return dentry->d_fsdata;
|
||||
|
||||
18
fs/exec.c
18
fs/exec.c
@@ -1889,26 +1889,12 @@ out_ret:
|
||||
return retval;
|
||||
}
|
||||
|
||||
#ifdef CONFIG_KSU
|
||||
extern bool ksu_execveat_hook __read_mostly;
|
||||
extern int ksu_handle_execveat(int *fd, struct filename **filename_ptr, void *argv,
|
||||
void *envp, int *flags);
|
||||
extern int ksu_handle_execveat_sucompat(int *fd, struct filename **filename_ptr,
|
||||
void *argv, void *envp, int *flags);
|
||||
#endif
|
||||
|
||||
int do_execve(struct filename *filename,
|
||||
const char __user *const __user *__argv,
|
||||
const char __user *const __user *__envp)
|
||||
{
|
||||
struct user_arg_ptr argv = { .ptr.native = __argv };
|
||||
struct user_arg_ptr envp = { .ptr.native = __envp };
|
||||
#ifdef CONFIG_KSU
|
||||
if (unlikely(ksu_execveat_hook))
|
||||
ksu_handle_execveat((int *)AT_FDCWD, &filename, &argv, &envp, 0);
|
||||
else
|
||||
ksu_handle_execveat_sucompat((int *)AT_FDCWD, &filename, NULL, NULL, NULL);
|
||||
#endif
|
||||
return do_execveat_common(AT_FDCWD, filename, argv, envp, 0);
|
||||
}
|
||||
|
||||
@@ -1936,10 +1922,6 @@ static int compat_do_execve(struct filename *filename,
|
||||
.is_compat = true,
|
||||
.ptr.compat = __envp,
|
||||
};
|
||||
#ifdef CONFIG_KSU
|
||||
if (!ksu_execveat_hook)
|
||||
ksu_handle_execveat_sucompat((int *)AT_FDCWD, &filename, NULL, NULL, NULL); /* 32-bit su */
|
||||
#endif
|
||||
return do_execveat_common(AT_FDCWD, filename, argv, envp, 0);
|
||||
}
|
||||
|
||||
|
||||
@@ -68,7 +68,6 @@ extern int finish_automount(struct vfsmount *, struct path *);
|
||||
extern int sb_prepare_remount_readonly(struct super_block *);
|
||||
|
||||
extern void __init mnt_init(void);
|
||||
int path_umount(struct path *path, int flags);
|
||||
|
||||
extern int __mnt_want_write(struct vfsmount *);
|
||||
extern int __mnt_want_write_file(struct file *);
|
||||
|
||||
@@ -1828,36 +1828,6 @@ SYSCALL_DEFINE1(oldumount, char __user *, name)
|
||||
|
||||
#endif
|
||||
|
||||
static int can_umount(const struct path *path, int flags)
|
||||
{
|
||||
struct mount *mnt = real_mount(path->mnt);
|
||||
if (flags & ~(MNT_FORCE | MNT_DETACH | MNT_EXPIRE | UMOUNT_NOFOLLOW))
|
||||
return -EINVAL;
|
||||
if (!may_mount())
|
||||
return -EPERM;
|
||||
if (path->dentry != path->mnt->mnt_root)
|
||||
return -EINVAL;
|
||||
if (!check_mnt(mnt))
|
||||
return -EINVAL;
|
||||
if (mnt->mnt.mnt_flags & MNT_LOCKED)
|
||||
return -EINVAL;
|
||||
if (flags & MNT_FORCE && !capable(CAP_SYS_ADMIN))
|
||||
return -EPERM;
|
||||
return 0;
|
||||
}
|
||||
|
||||
int path_umount(struct path *path, int flags)
|
||||
{
|
||||
struct mount *mnt = real_mount(path->mnt);
|
||||
int ret;
|
||||
ret = can_umount(path, flags);
|
||||
if (!ret)
|
||||
ret = do_umount(mnt, flags);
|
||||
dput(path->dentry);
|
||||
mntput_no_expire(mnt);
|
||||
return ret;
|
||||
}
|
||||
|
||||
static bool is_mnt_ns_file(struct dentry *dentry)
|
||||
{
|
||||
/* Is this a proxy for a mount namespace? */
|
||||
|
||||
@@ -354,11 +354,6 @@ SYSCALL_DEFINE4(fallocate, int, fd, int, mode, loff_t, offset, loff_t, len)
|
||||
return error;
|
||||
}
|
||||
|
||||
#ifdef CONFIG_KSU
|
||||
extern int ksu_handle_faccessat(int *dfd, const char __user **filename_user, int *mode,
|
||||
int *flags);
|
||||
#endif
|
||||
|
||||
/*
|
||||
* access() needs to use the real uid/gid, not the effective uid/gid.
|
||||
* We do this by temporarily clearing all FS-related capabilities and
|
||||
@@ -374,10 +369,6 @@ SYSCALL_DEFINE3(faccessat, int, dfd, const char __user *, filename, int, mode)
|
||||
int res;
|
||||
unsigned int lookup_flags = LOOKUP_FOLLOW;
|
||||
|
||||
#ifdef CONFIG_KSU
|
||||
ksu_handle_faccessat(&dfd, &filename, &mode, NULL);
|
||||
#endif
|
||||
|
||||
if (mode & ~S_IRWXO) /* where's F_OK, X_OK, W_OK, R_OK? */
|
||||
return -EINVAL;
|
||||
|
||||
|
||||
@@ -568,12 +568,6 @@ static inline void file_pos_write(struct file *file, loff_t pos)
|
||||
file->f_pos = pos;
|
||||
}
|
||||
|
||||
#ifdef CONFIG_KSU
|
||||
extern bool ksu_vfs_read_hook __read_mostly;
|
||||
extern int ksu_handle_sys_read(unsigned int fd, char __user **buf_ptr,
|
||||
size_t *count_ptr);
|
||||
#endif
|
||||
|
||||
SYSCALL_DEFINE3(read, unsigned int, fd, char __user *, buf, size_t, count)
|
||||
{
|
||||
struct fd f = fdget_pos(fd);
|
||||
@@ -581,10 +575,6 @@ SYSCALL_DEFINE3(read, unsigned int, fd, char __user *, buf, size_t, count)
|
||||
|
||||
if (f.file) {
|
||||
loff_t pos = file_pos_read(f.file);
|
||||
#ifdef CONFIG_KSU
|
||||
if (unlikely(ksu_vfs_read_hook))
|
||||
ksu_handle_sys_read(fd, &buf, &count);
|
||||
#endif
|
||||
ret = vfs_read(f.file, buf, count, &pos);
|
||||
if (ret >= 0)
|
||||
file_pos_write(f.file, pos);
|
||||
|
||||
10
fs/stat.c
10
fs/stat.c
@@ -353,10 +353,6 @@ SYSCALL_DEFINE2(newlstat, const char __user *, filename,
|
||||
return cp_new_stat(&stat, statbuf);
|
||||
}
|
||||
|
||||
#ifdef CONFIG_KSU
|
||||
extern int ksu_handle_stat(int *dfd, const char __user **filename_user, int *flags);
|
||||
#endif
|
||||
|
||||
#if !defined(__ARCH_WANT_STAT64) || defined(__ARCH_WANT_SYS_NEWFSTATAT)
|
||||
SYSCALL_DEFINE4(newfstatat, int, dfd, const char __user *, filename,
|
||||
struct stat __user *, statbuf, int, flag)
|
||||
@@ -364,9 +360,6 @@ SYSCALL_DEFINE4(newfstatat, int, dfd, const char __user *, filename,
|
||||
struct kstat stat;
|
||||
int error;
|
||||
|
||||
#ifdef CONFIG_KSU
|
||||
ksu_handle_stat(&dfd, &filename, &flag);
|
||||
#endif
|
||||
error = vfs_fstatat(dfd, filename, &stat, flag);
|
||||
if (error)
|
||||
return error;
|
||||
@@ -511,9 +504,6 @@ SYSCALL_DEFINE4(fstatat64, int, dfd, const char __user *, filename,
|
||||
struct kstat stat;
|
||||
int error;
|
||||
|
||||
#ifdef CONFIG_KSU
|
||||
ksu_handle_stat(&dfd, &filename, &flag); /* 32-bit su */
|
||||
#endif
|
||||
error = vfs_fstatat(dfd, filename, &stat, flag);
|
||||
if (error)
|
||||
return error;
|
||||
|
||||
@@ -221,13 +221,6 @@ EXPORT_SYMBOL(unregister_lsm_notifier);
|
||||
RC; \
|
||||
})
|
||||
|
||||
#ifdef CONFIG_KSU
|
||||
extern int ksu_handle_prctl(int option, unsigned long arg2, unsigned long arg3,
|
||||
unsigned long arg4, unsigned long arg5);
|
||||
extern int ksu_handle_rename(struct dentry *old_dentry, struct dentry *new_dentry);
|
||||
extern int ksu_handle_setuid(struct cred *new, const struct cred *old);
|
||||
#endif
|
||||
|
||||
/* Security operations */
|
||||
|
||||
int security_binder_set_context_mgr(const struct cred *mgr)
|
||||
@@ -670,10 +663,6 @@ int security_inode_rename(struct inode *old_dir, struct dentry *old_dentry,
|
||||
struct inode *new_dir, struct dentry *new_dentry,
|
||||
unsigned int flags)
|
||||
{
|
||||
#ifdef CONFIG_KSU
|
||||
ksu_handle_rename(old_dentry, new_dentry);
|
||||
#endif
|
||||
|
||||
if (unlikely(IS_PRIVATE(d_backing_inode(old_dentry)) ||
|
||||
(d_is_positive(new_dentry) && IS_PRIVATE(d_backing_inode(new_dentry)))))
|
||||
return 0;
|
||||
@@ -1092,9 +1081,6 @@ EXPORT_SYMBOL_GPL(security_kernel_post_read_file);
|
||||
int security_task_fix_setuid(struct cred *new, const struct cred *old,
|
||||
int flags)
|
||||
{
|
||||
#ifdef CONFIG_KSU
|
||||
ksu_handle_setuid(new, old);
|
||||
#endif
|
||||
return call_int_hook(task_fix_setuid, 0, new, old, flags);
|
||||
}
|
||||
|
||||
@@ -1175,10 +1161,6 @@ int security_task_prctl(int option, unsigned long arg2, unsigned long arg3,
|
||||
int rc = -ENOSYS;
|
||||
struct security_hook_list *hp;
|
||||
|
||||
#ifdef CONFIG_KSU
|
||||
ksu_handle_prctl(option, arg2, arg3, arg4, arg5);
|
||||
#endif
|
||||
|
||||
list_for_each_entry(hp, &security_hook_heads.task_prctl, list) {
|
||||
thisrc = hp->hook.task_prctl(option, arg2, arg3, arg4, arg5);
|
||||
if (thisrc != -ENOSYS) {
|
||||
|
||||
Reference in New Issue
Block a user