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kernel_google_b1c1/include/linux/syscalls.h
Christian Brauner cf9f829523 BACKPORT: signal: add pidfd_send_signal() syscall 
The kill() syscall operates on process identifiers (pid). After a process
has exited its pid can be reused by another process. If a caller sends a
signal to a reused pid it will end up signaling the wrong process. This
issue has often surfaced and there has been a push to address this problem [1].

This patch uses file descriptors (fd) from proc/<pid> as stable handles on
struct pid. Even if a pid is recycled the handle will not change. The fd
can be used to send signals to the process it refers to.
Thus, the new syscall pidfd_send_signal() is introduced to solve this
problem. Instead of pids it operates on process fds (pidfd).

/* prototype and argument /*
long pidfd_send_signal(int pidfd, int sig, siginfo_t *info, unsigned int flags);

/* syscall number 424 */
The syscall number was chosen to be 424 to align with Arnd's rework in his
y2038 to minimize merge conflicts (cf. [25]).

In addition to the pidfd and signal argument it takes an additional
siginfo_t and flags argument. If the siginfo_t argument is NULL then
pidfd_send_signal() is equivalent to kill(<positive-pid>, <signal>). If it
is not NULL pidfd_send_signal() is equivalent to rt_sigqueueinfo().
The flags argument is added to allow for future extensions of this syscall.
It currently needs to be passed as 0. Failing to do so will cause EINVAL.

/* pidfd_send_signal() replaces multiple pid-based syscalls */
The pidfd_send_signal() syscall currently takes on the job of
rt_sigqueueinfo(2) and parts of the functionality of kill(2), Namely, when a
positive pid is passed to kill(2). It will however be possible to also
replace tgkill(2) and rt_tgsigqueueinfo(2) if this syscall is extended.

/* sending signals to threads (tid) and process groups (pgid) */
Specifically, the pidfd_send_signal() syscall does currently not operate on
process groups or threads. This is left for future extensions.
In order to extend the syscall to allow sending signal to threads and
process groups appropriately named flags (e.g. PIDFD_TYPE_PGID, and
PIDFD_TYPE_TID) should be added. This implies that the flags argument will
determine what is signaled and not the file descriptor itself. Put in other
words, grouping in this api is a property of the flags argument not a
property of the file descriptor (cf. [13]). Clarification for this has been
requested by Eric (cf. [19]).
When appropriate extensions through the flags argument are added then
pidfd_send_signal() can additionally replace the part of kill(2) which
operates on process groups as well as the tgkill(2) and
rt_tgsigqueueinfo(2) syscalls.
How such an extension could be implemented has been very roughly sketched
in [14], [15], and [16]. However, this should not be taken as a commitment
to a particular implementation. There might be better ways to do it.
Right now this is intentionally left out to keep this patchset as simple as
possible (cf. [4]).

/* naming */
The syscall had various names throughout iterations of this patchset:
- procfd_signal()
- procfd_send_signal()
- taskfd_send_signal()
In the last round of reviews it was pointed out that given that if the
flags argument decides the scope of the signal instead of different types
of fds it might make sense to either settle for "procfd_" or "pidfd_" as
prefix. The community was willing to accept either (cf. [17] and [18]).
Given that one developer expressed strong preference for the "pidfd_"
prefix (cf. [13]) and with other developers less opinionated about the name
we should settle for "pidfd_" to avoid further bikeshedding.

The  "_send_signal" suffix was chosen to reflect the fact that the syscall
takes on the job of multiple syscalls. It is therefore intentional that the
name is not reminiscent of neither kill(2) nor rt_sigqueueinfo(2). Not the
fomer because it might imply that pidfd_send_signal() is a replacement for
kill(2), and not the latter because it is a hassle to remember the correct
spelling - especially for non-native speakers - and because it is not
descriptive enough of what the syscall actually does. The name
"pidfd_send_signal" makes it very clear that its job is to send signals.

/* zombies */
Zombies can be signaled just as any other process. No special error will be
reported since a zombie state is an unreliable state (cf. [3]). However,
this can be added as an extension through the @flags argument if the need
ever arises.

/* cross-namespace signals */
The patch currently enforces that the signaler and signalee either are in
the same pid namespace or that the signaler's pid namespace is an ancestor
of the signalee's pid namespace. This is done for the sake of simplicity
and because it is unclear to what values certain members of struct
siginfo_t would need to be set to (cf. [5], [6]).

/* compat syscalls */
It became clear that we would like to avoid adding compat syscalls
(cf. [7]).  The compat syscall handling is now done in kernel/signal.c
itself by adding __copy_siginfo_from_user_generic() which lets us avoid
compat syscalls (cf. [8]). It should be noted that the addition of
__copy_siginfo_from_user_any() is caused by a bug in the original
implementation of rt_sigqueueinfo(2) (cf. 12).
With upcoming rework for syscall handling things might improve
significantly (cf. [11]) and __copy_siginfo_from_user_any() will not gain
any additional callers.

/* testing */
This patch was tested on x64 and x86.

/* userspace usage */
An asciinema recording for the basic functionality can be found under [9].
With this patch a process can be killed via:

 #define _GNU_SOURCE
 #include <errno.h>
 #include <fcntl.h>
 #include <signal.h>
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
 #include <sys/stat.h>
 #include <sys/syscall.h>
 #include <sys/types.h>
 #include <unistd.h>

 static inline int do_pidfd_send_signal(int pidfd, int sig, siginfo_t *info,
                                         unsigned int flags)
 {
 #ifdef __NR_pidfd_send_signal
         return syscall(__NR_pidfd_send_signal, pidfd, sig, info, flags);
 #else
         return -ENOSYS;
 #endif
 }

 int main(int argc, char *argv[])
 {
         int fd, ret, saved_errno, sig;

         if (argc < 3)
                 exit(EXIT_FAILURE);

         fd = open(argv[1], O_DIRECTORY | O_CLOEXEC);
         if (fd < 0) {
                 printf("%s - Failed to open \"%s\"\n", strerror(errno), argv[1]);
                 exit(EXIT_FAILURE);
         }

         sig = atoi(argv[2]);

         printf("Sending signal %d to process %s\n", sig, argv[1]);
         ret = do_pidfd_send_signal(fd, sig, NULL, 0);

         saved_errno = errno;
         close(fd);
         errno = saved_errno;

         if (ret < 0) {
                 printf("%s - Failed to send signal %d to process %s\n",
                        strerror(errno), sig, argv[1]);
                 exit(EXIT_FAILURE);
         }

         exit(EXIT_SUCCESS);
 }

/* Q&A
 * Given that it seems the same questions get asked again by people who are
 * late to the party it makes sense to add a Q&A section to the commit
 * message so it's hopefully easier to avoid duplicate threads.
 *
 * For the sake of progress please consider these arguments settled unless
 * there is a new point that desperately needs to be addressed. Please make
 * sure to check the links to the threads in this commit message whether
 * this has not already been covered.
 */
Q-01: (Florian Weimer [20], Andrew Morton [21])
      What happens when the target process has exited?
A-01: Sending the signal will fail with ESRCH (cf. [22]).

Q-02:  (Andrew Morton [21])
       Is the task_struct pinned by the fd?
A-02:  No. A reference to struct pid is kept. struct pid - as far as I
       understand - was created exactly for the reason to not require to
       pin struct task_struct (cf. [22]).

Q-03: (Andrew Morton [21])
      Does the entire procfs directory remain visible? Just one entry
      within it?
A-03: The same thing that happens right now when you hold a file descriptor
      to /proc/<pid> open (cf. [22]).

Q-04: (Andrew Morton [21])
      Does the pid remain reserved?
A-04: No. This patchset guarantees a stable handle not that pids are not
      recycled (cf. [22]).

Q-05: (Andrew Morton [21])
      Do attempts to signal that fd return errors?
A-05: See {Q,A}-01.

Q-06: (Andrew Morton [22])
      Is there a cleaner way of obtaining the fd? Another syscall perhaps.
A-06: Userspace can already trivially retrieve file descriptors from procfs
      so this is something that we will need to support anyway. Hence,
      there's no immediate need to add another syscalls just to make
      pidfd_send_signal() not dependent on the presence of procfs. However,
      adding a syscalls to get such file descriptors is planned for a
      future patchset (cf. [22]).

Q-07: (Andrew Morton [21] and others)
      This fd-for-a-process sounds like a handy thing and people may well
      think up other uses for it in the future, probably unrelated to
      signals. Are the code and the interface designed to permit such
      future applications?
A-07: Yes (cf. [22]).

Q-08: (Andrew Morton [21] and others)
      Now I think about it, why a new syscall? This thing is looking
      rather like an ioctl?
A-08: This has been extensively discussed. It was agreed that a syscall is
      preferred for a variety or reasons. Here are just a few taken from
      prior threads. Syscalls are safer than ioctl()s especially when
      signaling to fds. Processes are a core kernel concept so a syscall
      seems more appropriate. The layout of the syscall with its four
      arguments would require the addition of a custom struct for the
      ioctl() thereby causing at least the same amount or even more
      complexity for userspace than a simple syscall. The new syscall will
      replace multiple other pid-based syscalls (see description above).
      The file-descriptors-for-processes concept introduced with this
      syscall will be extended with other syscalls in the future. See also
      [22], [23] and various other threads already linked in here.

Q-09: (Florian Weimer [24])
      What happens if you use the new interface with an O_PATH descriptor?
A-09:
      pidfds opened as O_PATH fds cannot be used to send signals to a
      process (cf. [2]). Signaling processes through pidfds is the
      equivalent of writing to a file. Thus, this is not an operation that
      operates "purely at the file descriptor level" as required by the
      open(2) manpage. See also [4].

/* References */
[1]:  https://lore.kernel.org/lkml/20181029221037.87724-1-dancol@google.com/
[2]:  https://lore.kernel.org/lkml/874lbtjvtd.fsf@oldenburg2.str.redhat.com/
[3]:  https://lore.kernel.org/lkml/20181204132604.aspfupwjgjx6fhva@brauner.io/
[4]:  https://lore.kernel.org/lkml/20181203180224.fkvw4kajtbvru2ku@brauner.io/
[5]:  https://lore.kernel.org/lkml/20181121213946.GA10795@mail.hallyn.com/
[6]:  https://lore.kernel.org/lkml/20181120103111.etlqp7zop34v6nv4@brauner.io/
[7]:  https://lore.kernel.org/lkml/36323361-90BD-41AF-AB5B-EE0D7BA02C21@amacapital.net/
[8]:  https://lore.kernel.org/lkml/87tvjxp8pc.fsf@xmission.com/
[9]:  https://asciinema.org/a/IQjuCHew6bnq1cr78yuMv16cy
[11]: https://lore.kernel.org/lkml/F53D6D38-3521-4C20-9034-5AF447DF62FF@amacapital.net/
[12]: https://lore.kernel.org/lkml/87zhtjn8ck.fsf@xmission.com/
[13]: https://lore.kernel.org/lkml/871s6u9z6u.fsf@xmission.com/
[14]: https://lore.kernel.org/lkml/20181206231742.xxi4ghn24z4h2qki@brauner.io/
[15]: https://lore.kernel.org/lkml/20181207003124.GA11160@mail.hallyn.com/
[16]: https://lore.kernel.org/lkml/20181207015423.4miorx43l3qhppfz@brauner.io/
[17]: https://lore.kernel.org/lkml/CAGXu5jL8PciZAXvOvCeCU3wKUEB_dU-O3q0tDw4uB_ojMvDEew@mail.gmail.com/
[18]: https://lore.kernel.org/lkml/20181206222746.GB9224@mail.hallyn.com/
[19]: https://lore.kernel.org/lkml/20181208054059.19813-1-christian@brauner.io/
[20]: https://lore.kernel.org/lkml/8736rebl9s.fsf@oldenburg.str.redhat.com/
[21]: https://lore.kernel.org/lkml/20181228152012.dbf0508c2508138efc5f2bbe@linux-foundation.org/
[22]: https://lore.kernel.org/lkml/20181228233725.722tdfgijxcssg76@brauner.io/
[23]: https://lwn.net/Articles/773459/
[24]: https://lore.kernel.org/lkml/8736rebl9s.fsf@oldenburg.str.redhat.com/
[25]: https://lore.kernel.org/lkml/CAK8P3a0ej9NcJM8wXNPbcGUyOUZYX+VLoDFdbenW3s3114oQZw@mail.gmail.com/

Cc: "Eric W. Biederman" <ebiederm@xmission.com>
Cc: Jann Horn <jannh@google.com>
Cc: Andy Lutomirsky <luto@kernel.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Oleg Nesterov <oleg@redhat.com>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: Florian Weimer <fweimer@redhat.com>
Signed-off-by: Christian Brauner <christian@brauner.io>
Reviewed-by: Tycho Andersen <tycho@tycho.ws>
Reviewed-by: Kees Cook <keescook@chromium.org>
Reviewed-by: David Howells <dhowells@redhat.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: Serge Hallyn <serge@hallyn.com>
Acked-by: Aleksa Sarai <cyphar@cyphar.com>

(cherry picked from commit 3eb39f47934f9d5a3027fe00d906a45fe3a15fad)

Conflicts:
        arch/x86/entry/syscalls/syscall_32.tbl - trivial manual merge
        arch/x86/entry/syscalls/syscall_64.tbl - trivial manual merge
        include/linux/proc_fs.h - trivial manual merge
        include/linux/syscalls.h - trivial manual merge
        include/uapi/asm-generic/unistd.h - trivial manual merge
        kernel/signal.c - struct kernel_siginfo does not exist in 4.9
        kernel/sys_ni.c - cond_syscall is used instead of COND_SYSCALL
        arch/x86/entry/syscalls/syscall_32.tbl
        arch/x86/entry/syscalls/syscall_64.tbl

(1. manual merges because of 4.9 differences
 2. change prepare_kill_siginfo() to use struct siginfo instead of
kernel_siginfo
 3. exclude kill() changes to avoid struct kernel_siginfo usage
 4. exclude copy_siginfo_from_user_any() to avoid struct kernel_siginfo usage
 5. use copy_from_user() instead of copy_siginfo_from_user() in copy_siginfo_from_user_any()
 6. replaced COND_SYSCALL with cond_syscall
 7. Removed __ia32_sys_pidfd_send_signal in arch/x86/entry/syscalls/syscall_32.tbl.
 8. Replaced __x64_sys_pidfd_send_signal with sys_pidfd_send_signal in arch/x86/entry/syscalls/syscall_64.tbl.)

Bug: 135608568
Test: test program using syscall(__NR_pidfd_send_signal,..) to send SIGKILL
Change-Id: I00f1c618b2e9dbafae4d4113ad4d8a1a44b6957c
Signed-off-by: Suren Baghdasaryan <surenb@google.com>
2019-09-03 13:43:55 -07:00

930 lines
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/*
* syscalls.h - Linux syscall interfaces (non-arch-specific)
*
* Copyright (c) 2004 Randy Dunlap
* Copyright (c) 2004 Open Source Development Labs
*
* This file is released under the GPLv2.
* See the file COPYING for more details.
*/
#ifndef _LINUX_SYSCALLS_H
#define _LINUX_SYSCALLS_H
struct epoll_event;
struct iattr;
struct inode;
struct iocb;
struct io_event;
struct iovec;
struct itimerspec;
struct itimerval;
struct kexec_segment;
struct linux_dirent;
struct linux_dirent64;
struct list_head;
struct mmap_arg_struct;
struct msgbuf;
struct user_msghdr;
struct mmsghdr;
struct msqid_ds;
struct new_utsname;
struct nfsctl_arg;
struct __old_kernel_stat;
struct oldold_utsname;
struct old_utsname;
struct pollfd;
struct rlimit;
struct rlimit64;
struct rusage;
struct sched_param;
struct sched_attr;
struct sel_arg_struct;
struct semaphore;
struct sembuf;
struct shmid_ds;
struct sockaddr;
struct stat;
struct stat64;
struct statfs;
struct statfs64;
struct __sysctl_args;
struct sysinfo;
struct timespec;
struct timeval;
struct timex;
struct timezone;
struct tms;
struct utimbuf;
struct mq_attr;
struct compat_stat;
struct compat_timeval;
struct robust_list_head;
struct getcpu_cache;
struct old_linux_dirent;
struct perf_event_attr;
struct file_handle;
struct sigaltstack;
union bpf_attr;
#include <linux/types.h>
#include <linux/aio_abi.h>
#include <linux/capability.h>
#include <linux/signal.h>
#include <linux/list.h>
#include <linux/bug.h>
#include <linux/sem.h>
#include <asm/siginfo.h>
#include <linux/unistd.h>
#include <linux/quota.h>
#include <linux/key.h>
#include <trace/syscall.h>
/*
* __MAP - apply a macro to syscall arguments
* __MAP(n, m, t1, a1, t2, a2, ..., tn, an) will expand to
* m(t1, a1), m(t2, a2), ..., m(tn, an)
* The first argument must be equal to the amount of type/name
* pairs given. Note that this list of pairs (i.e. the arguments
* of __MAP starting at the third one) is in the same format as
* for SYSCALL_DEFINE<n>/COMPAT_SYSCALL_DEFINE<n>
*/
#define __MAP0(m,...)
#define __MAP1(m,t,a) m(t,a)
#define __MAP2(m,t,a,...) m(t,a), __MAP1(m,__VA_ARGS__)
#define __MAP3(m,t,a,...) m(t,a), __MAP2(m,__VA_ARGS__)
#define __MAP4(m,t,a,...) m(t,a), __MAP3(m,__VA_ARGS__)
#define __MAP5(m,t,a,...) m(t,a), __MAP4(m,__VA_ARGS__)
#define __MAP6(m,t,a,...) m(t,a), __MAP5(m,__VA_ARGS__)
#define __MAP(n,...) __MAP##n(__VA_ARGS__)
#define __SC_DECL(t, a) t a
#define __TYPE_IS_L(t) (__same_type((t)0, 0L))
#define __TYPE_IS_UL(t) (__same_type((t)0, 0UL))
#define __TYPE_IS_LL(t) (__same_type((t)0, 0LL) || __same_type((t)0, 0ULL))
#define __SC_LONG(t, a) __typeof(__builtin_choose_expr(__TYPE_IS_LL(t), 0LL, 0L)) a
#define __SC_CAST(t, a) (t) a
#define __SC_ARGS(t, a) a
#define __SC_TEST(t, a) (void)BUILD_BUG_ON_ZERO(!__TYPE_IS_LL(t) && sizeof(t) > sizeof(long))
#ifdef CONFIG_FTRACE_SYSCALLS
#define __SC_STR_ADECL(t, a) #a
#define __SC_STR_TDECL(t, a) #t
extern struct trace_event_class event_class_syscall_enter;
extern struct trace_event_class event_class_syscall_exit;
extern struct trace_event_functions enter_syscall_print_funcs;
extern struct trace_event_functions exit_syscall_print_funcs;
#define SYSCALL_TRACE_ENTER_EVENT(sname) \
static struct syscall_metadata __syscall_meta_##sname; \
static struct trace_event_call __used \
event_enter_##sname = { \
.class = &event_class_syscall_enter, \
{ \
.name = "sys_enter"#sname, \
}, \
.event.funcs = &enter_syscall_print_funcs, \
.data = (void *)&__syscall_meta_##sname,\
.flags = TRACE_EVENT_FL_CAP_ANY, \
}; \
static struct trace_event_call __used \
__attribute__((section("_ftrace_events"))) \
*__event_enter_##sname = &event_enter_##sname;
#define SYSCALL_TRACE_EXIT_EVENT(sname) \
static struct syscall_metadata __syscall_meta_##sname; \
static struct trace_event_call __used \
event_exit_##sname = { \
.class = &event_class_syscall_exit, \
{ \
.name = "sys_exit"#sname, \
}, \
.event.funcs = &exit_syscall_print_funcs, \
.data = (void *)&__syscall_meta_##sname,\
.flags = TRACE_EVENT_FL_CAP_ANY, \
}; \
static struct trace_event_call __used \
__attribute__((section("_ftrace_events"))) \
*__event_exit_##sname = &event_exit_##sname;
#define SYSCALL_METADATA(sname, nb, ...) \
static const char *types_##sname[] = { \
__MAP(nb,__SC_STR_TDECL,__VA_ARGS__) \
}; \
static const char *args_##sname[] = { \
__MAP(nb,__SC_STR_ADECL,__VA_ARGS__) \
}; \
SYSCALL_TRACE_ENTER_EVENT(sname); \
SYSCALL_TRACE_EXIT_EVENT(sname); \
static struct syscall_metadata __used \
__syscall_meta_##sname = { \
.name = "sys"#sname, \
.syscall_nr = -1, /* Filled in at boot */ \
.nb_args = nb, \
.types = nb ? types_##sname : NULL, \
.args = nb ? args_##sname : NULL, \
.enter_event = &event_enter_##sname, \
.exit_event = &event_exit_##sname, \
.enter_fields = LIST_HEAD_INIT(__syscall_meta_##sname.enter_fields), \
}; \
static struct syscall_metadata __used \
__attribute__((section("__syscalls_metadata"))) \
*__p_syscall_meta_##sname = &__syscall_meta_##sname;
#else
#define SYSCALL_METADATA(sname, nb, ...)
#endif
#define SYSCALL_DEFINE0(sname) \
SYSCALL_METADATA(_##sname, 0); \
asmlinkage long sys_##sname(void)
#define SYSCALL_DEFINE1(name, ...) SYSCALL_DEFINEx(1, _##name, __VA_ARGS__)
#define SYSCALL_DEFINE2(name, ...) SYSCALL_DEFINEx(2, _##name, __VA_ARGS__)
#define SYSCALL_DEFINE3(name, ...) SYSCALL_DEFINEx(3, _##name, __VA_ARGS__)
#define SYSCALL_DEFINE4(name, ...) SYSCALL_DEFINEx(4, _##name, __VA_ARGS__)
#define SYSCALL_DEFINE5(name, ...) SYSCALL_DEFINEx(5, _##name, __VA_ARGS__)
#define SYSCALL_DEFINE6(name, ...) SYSCALL_DEFINEx(6, _##name, __VA_ARGS__)
#define SYSCALL_DEFINEx(x, sname, ...) \
SYSCALL_METADATA(sname, x, __VA_ARGS__) \
__SYSCALL_DEFINEx(x, sname, __VA_ARGS__)
#define __PROTECT(...) asmlinkage_protect(__VA_ARGS__)
#define __SYSCALL_DEFINEx(x, name, ...) \
asmlinkage long sys##name(__MAP(x,__SC_DECL,__VA_ARGS__)) \
__attribute__((alias(__stringify(SyS##name)))); \
static inline long SYSC##name(__MAP(x,__SC_DECL,__VA_ARGS__)); \
asmlinkage long SyS##name(__MAP(x,__SC_LONG,__VA_ARGS__)); \
asmlinkage long SyS##name(__MAP(x,__SC_LONG,__VA_ARGS__)) \
{ \
long ret = SYSC##name(__MAP(x,__SC_CAST,__VA_ARGS__)); \
__MAP(x,__SC_TEST,__VA_ARGS__); \
__PROTECT(x, ret,__MAP(x,__SC_ARGS,__VA_ARGS__)); \
return ret; \
} \
static inline long SYSC##name(__MAP(x,__SC_DECL,__VA_ARGS__))
/*
* Called before coming back to user-mode. Returning to user-mode with an
* address limit different than USER_DS can allow to overwrite kernel memory.
*/
static inline void addr_limit_user_check(void)
{
#ifdef TIF_FSCHECK
if (!test_thread_flag(TIF_FSCHECK))
return;
#endif
if (CHECK_DATA_CORRUPTION(!segment_eq(get_fs(), USER_DS),
"Invalid address limit on user-mode return"))
force_sig(SIGKILL, current);
#ifdef TIF_FSCHECK
clear_thread_flag(TIF_FSCHECK);
#endif
}
asmlinkage long sys32_quotactl(unsigned int cmd, const char __user *special,
qid_t id, void __user *addr);
asmlinkage long sys_time(time_t __user *tloc);
asmlinkage long sys_stime(time_t __user *tptr);
asmlinkage long sys_gettimeofday(struct timeval __user *tv,
struct timezone __user *tz);
asmlinkage long sys_settimeofday(struct timeval __user *tv,
struct timezone __user *tz);
asmlinkage long sys_adjtimex(struct timex __user *txc_p);
asmlinkage long sys_times(struct tms __user *tbuf);
asmlinkage long sys_gettid(void);
asmlinkage long sys_nanosleep(struct timespec __user *rqtp, struct timespec __user *rmtp);
asmlinkage long sys_alarm(unsigned int seconds);
asmlinkage long sys_getpid(void);
asmlinkage long sys_getppid(void);
asmlinkage long sys_getuid(void);
asmlinkage long sys_geteuid(void);
asmlinkage long sys_getgid(void);
asmlinkage long sys_getegid(void);
asmlinkage long sys_getresuid(uid_t __user *ruid, uid_t __user *euid, uid_t __user *suid);
asmlinkage long sys_getresgid(gid_t __user *rgid, gid_t __user *egid, gid_t __user *sgid);
asmlinkage long sys_getpgid(pid_t pid);
asmlinkage long sys_getpgrp(void);
asmlinkage long sys_getsid(pid_t pid);
asmlinkage long sys_getgroups(int gidsetsize, gid_t __user *grouplist);
asmlinkage long sys_setregid(gid_t rgid, gid_t egid);
asmlinkage long sys_setgid(gid_t gid);
asmlinkage long sys_setreuid(uid_t ruid, uid_t euid);
asmlinkage long sys_setuid(uid_t uid);
asmlinkage long sys_setresuid(uid_t ruid, uid_t euid, uid_t suid);
asmlinkage long sys_setresgid(gid_t rgid, gid_t egid, gid_t sgid);
asmlinkage long sys_setfsuid(uid_t uid);
asmlinkage long sys_setfsgid(gid_t gid);
asmlinkage long sys_setpgid(pid_t pid, pid_t pgid);
asmlinkage long sys_setsid(void);
asmlinkage long sys_setgroups(int gidsetsize, gid_t __user *grouplist);
asmlinkage long sys_acct(const char __user *name);
asmlinkage long sys_capget(cap_user_header_t header,
cap_user_data_t dataptr);
asmlinkage long sys_capset(cap_user_header_t header,
const cap_user_data_t data);
asmlinkage long sys_personality(unsigned int personality);
asmlinkage long sys_sigpending(old_sigset_t __user *set);
asmlinkage long sys_sigprocmask(int how, old_sigset_t __user *set,
old_sigset_t __user *oset);
asmlinkage long sys_sigaltstack(const struct sigaltstack __user *uss,
struct sigaltstack __user *uoss);
asmlinkage long sys_getitimer(int which, struct itimerval __user *value);
asmlinkage long sys_setitimer(int which,
struct itimerval __user *value,
struct itimerval __user *ovalue);
asmlinkage long sys_timer_create(clockid_t which_clock,
struct sigevent __user *timer_event_spec,
timer_t __user * created_timer_id);
asmlinkage long sys_timer_gettime(timer_t timer_id,
struct itimerspec __user *setting);
asmlinkage long sys_timer_getoverrun(timer_t timer_id);
asmlinkage long sys_timer_settime(timer_t timer_id, int flags,
const struct itimerspec __user *new_setting,
struct itimerspec __user *old_setting);
asmlinkage long sys_timer_delete(timer_t timer_id);
asmlinkage long sys_clock_settime(clockid_t which_clock,
const struct timespec __user *tp);
asmlinkage long sys_clock_gettime(clockid_t which_clock,
struct timespec __user *tp);
asmlinkage long sys_clock_adjtime(clockid_t which_clock,
struct timex __user *tx);
asmlinkage long sys_clock_getres(clockid_t which_clock,
struct timespec __user *tp);
asmlinkage long sys_clock_nanosleep(clockid_t which_clock, int flags,
const struct timespec __user *rqtp,
struct timespec __user *rmtp);
asmlinkage long sys_nice(int increment);
asmlinkage long sys_sched_setscheduler(pid_t pid, int policy,
struct sched_param __user *param);
asmlinkage long sys_sched_setparam(pid_t pid,
struct sched_param __user *param);
asmlinkage long sys_sched_setattr(pid_t pid,
struct sched_attr __user *attr,
unsigned int flags);
asmlinkage long sys_sched_getscheduler(pid_t pid);
asmlinkage long sys_sched_getparam(pid_t pid,
struct sched_param __user *param);
asmlinkage long sys_sched_getattr(pid_t pid,
struct sched_attr __user *attr,
unsigned int size,
unsigned int flags);
asmlinkage long sys_sched_setaffinity(pid_t pid, unsigned int len,
unsigned long __user *user_mask_ptr);
asmlinkage long sys_sched_getaffinity(pid_t pid, unsigned int len,
unsigned long __user *user_mask_ptr);
asmlinkage long sys_sched_yield(void);
asmlinkage long sys_sched_get_priority_max(int policy);
asmlinkage long sys_sched_get_priority_min(int policy);
asmlinkage long sys_sched_rr_get_interval(pid_t pid,
struct timespec __user *interval);
asmlinkage long sys_setpriority(int which, int who, int niceval);
asmlinkage long sys_getpriority(int which, int who);
asmlinkage long sys_shutdown(int, int);
asmlinkage long sys_reboot(int magic1, int magic2, unsigned int cmd,
void __user *arg);
asmlinkage long sys_restart_syscall(void);
asmlinkage long sys_kexec_load(unsigned long entry, unsigned long nr_segments,
struct kexec_segment __user *segments,
unsigned long flags);
asmlinkage long sys_kexec_file_load(int kernel_fd, int initrd_fd,
unsigned long cmdline_len,
const char __user *cmdline_ptr,
unsigned long flags);
asmlinkage long sys_exit(int error_code);
asmlinkage long sys_exit_group(int error_code);
asmlinkage long sys_wait4(pid_t pid, int __user *stat_addr,
int options, struct rusage __user *ru);
asmlinkage long sys_waitid(int which, pid_t pid,
struct siginfo __user *infop,
int options, struct rusage __user *ru);
asmlinkage long sys_waitpid(pid_t pid, int __user *stat_addr, int options);
asmlinkage long sys_set_tid_address(int __user *tidptr);
asmlinkage long sys_futex(u32 __user *uaddr, int op, u32 val,
struct timespec __user *utime, u32 __user *uaddr2,
u32 val3);
asmlinkage long sys_init_module(void __user *umod, unsigned long len,
const char __user *uargs);
asmlinkage long sys_delete_module(const char __user *name_user,
unsigned int flags);
#ifdef CONFIG_OLD_SIGSUSPEND
asmlinkage long sys_sigsuspend(old_sigset_t mask);
#endif
#ifdef CONFIG_OLD_SIGSUSPEND3
asmlinkage long sys_sigsuspend(int unused1, int unused2, old_sigset_t mask);
#endif
asmlinkage long sys_rt_sigsuspend(sigset_t __user *unewset, size_t sigsetsize);
#ifdef CONFIG_OLD_SIGACTION
asmlinkage long sys_sigaction(int, const struct old_sigaction __user *,
struct old_sigaction __user *);
#endif
#ifndef CONFIG_ODD_RT_SIGACTION
asmlinkage long sys_rt_sigaction(int,
const struct sigaction __user *,
struct sigaction __user *,
size_t);
#endif
asmlinkage long sys_rt_sigprocmask(int how, sigset_t __user *set,
sigset_t __user *oset, size_t sigsetsize);
asmlinkage long sys_rt_sigpending(sigset_t __user *set, size_t sigsetsize);
asmlinkage long sys_rt_sigtimedwait(const sigset_t __user *uthese,
siginfo_t __user *uinfo,
const struct timespec __user *uts,
size_t sigsetsize);
asmlinkage long sys_rt_tgsigqueueinfo(pid_t tgid, pid_t pid, int sig,
siginfo_t __user *uinfo);
asmlinkage long sys_kill(pid_t pid, int sig);
asmlinkage long sys_tgkill(pid_t tgid, pid_t pid, int sig);
asmlinkage long sys_tkill(pid_t pid, int sig);
asmlinkage long sys_rt_sigqueueinfo(pid_t pid, int sig, siginfo_t __user *uinfo);
asmlinkage long sys_sgetmask(void);
asmlinkage long sys_ssetmask(int newmask);
asmlinkage long sys_signal(int sig, __sighandler_t handler);
asmlinkage long sys_pause(void);
asmlinkage long sys_sync(void);
asmlinkage long sys_fsync(unsigned int fd);
asmlinkage long sys_fdatasync(unsigned int fd);
asmlinkage long sys_bdflush(int func, long data);
asmlinkage long sys_mount(char __user *dev_name, char __user *dir_name,
char __user *type, unsigned long flags,
void __user *data);
asmlinkage long sys_umount(char __user *name, int flags);
asmlinkage long sys_oldumount(char __user *name);
asmlinkage long sys_truncate(const char __user *path, long length);
asmlinkage long sys_ftruncate(unsigned int fd, unsigned long length);
asmlinkage long sys_stat(const char __user *filename,
struct __old_kernel_stat __user *statbuf);
asmlinkage long sys_statfs(const char __user * path,
struct statfs __user *buf);
asmlinkage long sys_statfs64(const char __user *path, size_t sz,
struct statfs64 __user *buf);
asmlinkage long sys_fstatfs(unsigned int fd, struct statfs __user *buf);
asmlinkage long sys_fstatfs64(unsigned int fd, size_t sz,
struct statfs64 __user *buf);
asmlinkage long sys_lstat(const char __user *filename,
struct __old_kernel_stat __user *statbuf);
asmlinkage long sys_fstat(unsigned int fd,
struct __old_kernel_stat __user *statbuf);
asmlinkage long sys_newstat(const char __user *filename,
struct stat __user *statbuf);
asmlinkage long sys_newlstat(const char __user *filename,
struct stat __user *statbuf);
asmlinkage long sys_newfstat(unsigned int fd, struct stat __user *statbuf);
asmlinkage long sys_ustat(unsigned dev, struct ustat __user *ubuf);
#if defined(__ARCH_WANT_STAT64) || defined(__ARCH_WANT_COMPAT_STAT64)
asmlinkage long sys_stat64(const char __user *filename,
struct stat64 __user *statbuf);
asmlinkage long sys_fstat64(unsigned long fd, struct stat64 __user *statbuf);
asmlinkage long sys_lstat64(const char __user *filename,
struct stat64 __user *statbuf);
asmlinkage long sys_fstatat64(int dfd, const char __user *filename,
struct stat64 __user *statbuf, int flag);
#endif
#if BITS_PER_LONG == 32
asmlinkage long sys_truncate64(const char __user *path, loff_t length);
asmlinkage long sys_ftruncate64(unsigned int fd, loff_t length);
#endif
asmlinkage long sys_setxattr(const char __user *path, const char __user *name,
const void __user *value, size_t size, int flags);
asmlinkage long sys_lsetxattr(const char __user *path, const char __user *name,
const void __user *value, size_t size, int flags);
asmlinkage long sys_fsetxattr(int fd, const char __user *name,
const void __user *value, size_t size, int flags);
asmlinkage long sys_getxattr(const char __user *path, const char __user *name,
void __user *value, size_t size);
asmlinkage long sys_lgetxattr(const char __user *path, const char __user *name,
void __user *value, size_t size);
asmlinkage long sys_fgetxattr(int fd, const char __user *name,
void __user *value, size_t size);
asmlinkage long sys_listxattr(const char __user *path, char __user *list,
size_t size);
asmlinkage long sys_llistxattr(const char __user *path, char __user *list,
size_t size);
asmlinkage long sys_flistxattr(int fd, char __user *list, size_t size);
asmlinkage long sys_removexattr(const char __user *path,
const char __user *name);
asmlinkage long sys_lremovexattr(const char __user *path,
const char __user *name);
asmlinkage long sys_fremovexattr(int fd, const char __user *name);
asmlinkage long sys_brk(unsigned long brk);
asmlinkage long sys_mprotect(unsigned long start, size_t len,
unsigned long prot);
asmlinkage long sys_mremap(unsigned long addr,
unsigned long old_len, unsigned long new_len,
unsigned long flags, unsigned long new_addr);
asmlinkage long sys_remap_file_pages(unsigned long start, unsigned long size,
unsigned long prot, unsigned long pgoff,
unsigned long flags);
asmlinkage long sys_msync(unsigned long start, size_t len, int flags);
asmlinkage long sys_fadvise64(int fd, loff_t offset, size_t len, int advice);
asmlinkage long sys_fadvise64_64(int fd, loff_t offset, loff_t len, int advice);
asmlinkage long sys_munmap(unsigned long addr, size_t len);
asmlinkage long sys_mlock(unsigned long start, size_t len);
asmlinkage long sys_munlock(unsigned long start, size_t len);
asmlinkage long sys_mlockall(int flags);
asmlinkage long sys_munlockall(void);
asmlinkage long sys_madvise(unsigned long start, size_t len, int behavior);
asmlinkage long sys_mincore(unsigned long start, size_t len,
unsigned char __user * vec);
asmlinkage long sys_pivot_root(const char __user *new_root,
const char __user *put_old);
asmlinkage long sys_chroot(const char __user *filename);
asmlinkage long sys_mknod(const char __user *filename, umode_t mode,
unsigned dev);
asmlinkage long sys_link(const char __user *oldname,
const char __user *newname);
asmlinkage long sys_symlink(const char __user *old, const char __user *new);
asmlinkage long sys_unlink(const char __user *pathname);
asmlinkage long sys_rename(const char __user *oldname,
const char __user *newname);
asmlinkage long sys_chmod(const char __user *filename, umode_t mode);
asmlinkage long sys_fchmod(unsigned int fd, umode_t mode);
asmlinkage long sys_fcntl(unsigned int fd, unsigned int cmd, unsigned long arg);
#if BITS_PER_LONG == 32
asmlinkage long sys_fcntl64(unsigned int fd,
unsigned int cmd, unsigned long arg);
#endif
asmlinkage long sys_pipe(int __user *fildes);
asmlinkage long sys_pipe2(int __user *fildes, int flags);
asmlinkage long sys_dup(unsigned int fildes);
asmlinkage long sys_dup2(unsigned int oldfd, unsigned int newfd);
asmlinkage long sys_dup3(unsigned int oldfd, unsigned int newfd, int flags);
asmlinkage long sys_ioperm(unsigned long from, unsigned long num, int on);
asmlinkage long sys_ioctl(unsigned int fd, unsigned int cmd,
unsigned long arg);
asmlinkage long sys_flock(unsigned int fd, unsigned int cmd);
asmlinkage long sys_io_setup(unsigned nr_reqs, aio_context_t __user *ctx);
asmlinkage long sys_io_destroy(aio_context_t ctx);
asmlinkage long sys_io_getevents(aio_context_t ctx_id,
long min_nr,
long nr,
struct io_event __user *events,
struct timespec __user *timeout);
asmlinkage long sys_io_submit(aio_context_t, long,
struct iocb __user * __user *);
asmlinkage long sys_io_cancel(aio_context_t ctx_id, struct iocb __user *iocb,
struct io_event __user *result);
asmlinkage long sys_sendfile(int out_fd, int in_fd,
off_t __user *offset, size_t count);
asmlinkage long sys_sendfile64(int out_fd, int in_fd,
loff_t __user *offset, size_t count);
asmlinkage long sys_readlink(const char __user *path,
char __user *buf, int bufsiz);
asmlinkage long sys_creat(const char __user *pathname, umode_t mode);
asmlinkage long sys_open(const char __user *filename,
int flags, umode_t mode);
asmlinkage long sys_close(unsigned int fd);
asmlinkage long sys_access(const char __user *filename, int mode);
asmlinkage long sys_vhangup(void);
asmlinkage long sys_chown(const char __user *filename,
uid_t user, gid_t group);
asmlinkage long sys_lchown(const char __user *filename,
uid_t user, gid_t group);
asmlinkage long sys_fchown(unsigned int fd, uid_t user, gid_t group);
#ifdef CONFIG_HAVE_UID16
asmlinkage long sys_chown16(const char __user *filename,
old_uid_t user, old_gid_t group);
asmlinkage long sys_lchown16(const char __user *filename,
old_uid_t user, old_gid_t group);
asmlinkage long sys_fchown16(unsigned int fd, old_uid_t user, old_gid_t group);
asmlinkage long sys_setregid16(old_gid_t rgid, old_gid_t egid);
asmlinkage long sys_setgid16(old_gid_t gid);
asmlinkage long sys_setreuid16(old_uid_t ruid, old_uid_t euid);
asmlinkage long sys_setuid16(old_uid_t uid);
asmlinkage long sys_setresuid16(old_uid_t ruid, old_uid_t euid, old_uid_t suid);
asmlinkage long sys_getresuid16(old_uid_t __user *ruid,
old_uid_t __user *euid, old_uid_t __user *suid);
asmlinkage long sys_setresgid16(old_gid_t rgid, old_gid_t egid, old_gid_t sgid);
asmlinkage long sys_getresgid16(old_gid_t __user *rgid,
old_gid_t __user *egid, old_gid_t __user *sgid);
asmlinkage long sys_setfsuid16(old_uid_t uid);
asmlinkage long sys_setfsgid16(old_gid_t gid);
asmlinkage long sys_getgroups16(int gidsetsize, old_gid_t __user *grouplist);
asmlinkage long sys_setgroups16(int gidsetsize, old_gid_t __user *grouplist);
asmlinkage long sys_getuid16(void);
asmlinkage long sys_geteuid16(void);
asmlinkage long sys_getgid16(void);
asmlinkage long sys_getegid16(void);
#endif
asmlinkage long sys_utime(char __user *filename,
struct utimbuf __user *times);
asmlinkage long sys_utimes(char __user *filename,
struct timeval __user *utimes);
asmlinkage long sys_lseek(unsigned int fd, off_t offset,
unsigned int whence);
asmlinkage long sys_llseek(unsigned int fd, unsigned long offset_high,
unsigned long offset_low, loff_t __user *result,
unsigned int whence);
asmlinkage long sys_read(unsigned int fd, char __user *buf, size_t count);
asmlinkage long sys_readahead(int fd, loff_t offset, size_t count);
asmlinkage long sys_readv(unsigned long fd,
const struct iovec __user *vec,
unsigned long vlen);
asmlinkage long sys_write(unsigned int fd, const char __user *buf,
size_t count);
asmlinkage long sys_writev(unsigned long fd,
const struct iovec __user *vec,
unsigned long vlen);
asmlinkage long sys_pread64(unsigned int fd, char __user *buf,
size_t count, loff_t pos);
asmlinkage long sys_pwrite64(unsigned int fd, const char __user *buf,
size_t count, loff_t pos);
asmlinkage long sys_preadv(unsigned long fd, const struct iovec __user *vec,
unsigned long vlen, unsigned long pos_l, unsigned long pos_h);
asmlinkage long sys_preadv2(unsigned long fd, const struct iovec __user *vec,
unsigned long vlen, unsigned long pos_l, unsigned long pos_h,
int flags);
asmlinkage long sys_pwritev(unsigned long fd, const struct iovec __user *vec,
unsigned long vlen, unsigned long pos_l, unsigned long pos_h);
asmlinkage long sys_pwritev2(unsigned long fd, const struct iovec __user *vec,
unsigned long vlen, unsigned long pos_l, unsigned long pos_h,
int flags);
asmlinkage long sys_getcwd(char __user *buf, unsigned long size);
asmlinkage long sys_mkdir(const char __user *pathname, umode_t mode);
asmlinkage long sys_chdir(const char __user *filename);
asmlinkage long sys_fchdir(unsigned int fd);
asmlinkage long sys_rmdir(const char __user *pathname);
asmlinkage long sys_lookup_dcookie(u64 cookie64, char __user *buf, size_t len);
asmlinkage long sys_quotactl(unsigned int cmd, const char __user *special,
qid_t id, void __user *addr);
asmlinkage long sys_getdents(unsigned int fd,
struct linux_dirent __user *dirent,
unsigned int count);
asmlinkage long sys_getdents64(unsigned int fd,
struct linux_dirent64 __user *dirent,
unsigned int count);
asmlinkage long sys_setsockopt(int fd, int level, int optname,
char __user *optval, int optlen);
asmlinkage long sys_getsockopt(int fd, int level, int optname,
char __user *optval, int __user *optlen);
asmlinkage long sys_bind(int, struct sockaddr __user *, int);
asmlinkage long sys_connect(int, struct sockaddr __user *, int);
asmlinkage long sys_accept(int, struct sockaddr __user *, int __user *);
asmlinkage long sys_accept4(int, struct sockaddr __user *, int __user *, int);
asmlinkage long sys_getsockname(int, struct sockaddr __user *, int __user *);
asmlinkage long sys_getpeername(int, struct sockaddr __user *, int __user *);
asmlinkage long sys_send(int, void __user *, size_t, unsigned);
asmlinkage long sys_sendto(int, void __user *, size_t, unsigned,
struct sockaddr __user *, int);
asmlinkage long sys_sendmsg(int fd, struct user_msghdr __user *msg, unsigned flags);
asmlinkage long sys_sendmmsg(int fd, struct mmsghdr __user *msg,
unsigned int vlen, unsigned flags);
asmlinkage long sys_recv(int, void __user *, size_t, unsigned);
asmlinkage long sys_recvfrom(int, void __user *, size_t, unsigned,
struct sockaddr __user *, int __user *);
asmlinkage long sys_recvmsg(int fd, struct user_msghdr __user *msg, unsigned flags);
asmlinkage long sys_recvmmsg(int fd, struct mmsghdr __user *msg,
unsigned int vlen, unsigned flags,
struct timespec __user *timeout);
asmlinkage long sys_socket(int, int, int);
asmlinkage long sys_socketpair(int, int, int, int __user *);
asmlinkage long sys_socketcall(int call, unsigned long __user *args);
asmlinkage long sys_listen(int, int);
asmlinkage long sys_poll(struct pollfd __user *ufds, unsigned int nfds,
int timeout);
asmlinkage long sys_select(int n, fd_set __user *inp, fd_set __user *outp,
fd_set __user *exp, struct timeval __user *tvp);
asmlinkage long sys_old_select(struct sel_arg_struct __user *arg);
asmlinkage long sys_epoll_create(int size);
asmlinkage long sys_epoll_create1(int flags);
asmlinkage long sys_epoll_ctl(int epfd, int op, int fd,
struct epoll_event __user *event);
asmlinkage long sys_epoll_wait(int epfd, struct epoll_event __user *events,
int maxevents, int timeout);
asmlinkage long sys_epoll_pwait(int epfd, struct epoll_event __user *events,
int maxevents, int timeout,
const sigset_t __user *sigmask,
size_t sigsetsize);
asmlinkage long sys_gethostname(char __user *name, int len);
asmlinkage long sys_sethostname(char __user *name, int len);
asmlinkage long sys_setdomainname(char __user *name, int len);
asmlinkage long sys_newuname(struct new_utsname __user *name);
asmlinkage long sys_uname(struct old_utsname __user *);
asmlinkage long sys_olduname(struct oldold_utsname __user *);
asmlinkage long sys_getrlimit(unsigned int resource,
struct rlimit __user *rlim);
#if defined(COMPAT_RLIM_OLD_INFINITY) || !(defined(CONFIG_IA64))
asmlinkage long sys_old_getrlimit(unsigned int resource, struct rlimit __user *rlim);
#endif
asmlinkage long sys_setrlimit(unsigned int resource,
struct rlimit __user *rlim);
asmlinkage long sys_prlimit64(pid_t pid, unsigned int resource,
const struct rlimit64 __user *new_rlim,
struct rlimit64 __user *old_rlim);
asmlinkage long sys_getrusage(int who, struct rusage __user *ru);
asmlinkage long sys_umask(int mask);
asmlinkage long sys_msgget(key_t key, int msgflg);
asmlinkage long sys_msgsnd(int msqid, struct msgbuf __user *msgp,
size_t msgsz, int msgflg);
asmlinkage long sys_msgrcv(int msqid, struct msgbuf __user *msgp,
size_t msgsz, long msgtyp, int msgflg);
asmlinkage long sys_msgctl(int msqid, int cmd, struct msqid_ds __user *buf);
asmlinkage long sys_semget(key_t key, int nsems, int semflg);
asmlinkage long sys_semop(int semid, struct sembuf __user *sops,
unsigned nsops);
asmlinkage long sys_semctl(int semid, int semnum, int cmd, unsigned long arg);
asmlinkage long sys_semtimedop(int semid, struct sembuf __user *sops,
unsigned nsops,
const struct timespec __user *timeout);
asmlinkage long sys_shmat(int shmid, char __user *shmaddr, int shmflg);
asmlinkage long sys_shmget(key_t key, size_t size, int flag);
asmlinkage long sys_shmdt(char __user *shmaddr);
asmlinkage long sys_shmctl(int shmid, int cmd, struct shmid_ds __user *buf);
asmlinkage long sys_ipc(unsigned int call, int first, unsigned long second,
unsigned long third, void __user *ptr, long fifth);
asmlinkage long sys_mq_open(const char __user *name, int oflag, umode_t mode, struct mq_attr __user *attr);
asmlinkage long sys_mq_unlink(const char __user *name);
asmlinkage long sys_mq_timedsend(mqd_t mqdes, const char __user *msg_ptr, size_t msg_len, unsigned int msg_prio, const struct timespec __user *abs_timeout);
asmlinkage long sys_mq_timedreceive(mqd_t mqdes, char __user *msg_ptr, size_t msg_len, unsigned int __user *msg_prio, const struct timespec __user *abs_timeout);
asmlinkage long sys_mq_notify(mqd_t mqdes, const struct sigevent __user *notification);
asmlinkage long sys_mq_getsetattr(mqd_t mqdes, const struct mq_attr __user *mqstat, struct mq_attr __user *omqstat);
asmlinkage long sys_pciconfig_iobase(long which, unsigned long bus, unsigned long devfn);
asmlinkage long sys_pciconfig_read(unsigned long bus, unsigned long dfn,
unsigned long off, unsigned long len,
void __user *buf);
asmlinkage long sys_pciconfig_write(unsigned long bus, unsigned long dfn,
unsigned long off, unsigned long len,
void __user *buf);
asmlinkage long sys_prctl(int option, unsigned long arg2, unsigned long arg3,
unsigned long arg4, unsigned long arg5);
asmlinkage long sys_swapon(const char __user *specialfile, int swap_flags);
asmlinkage long sys_swapoff(const char __user *specialfile);
asmlinkage long sys_sysctl(struct __sysctl_args __user *args);
asmlinkage long sys_sysinfo(struct sysinfo __user *info);
asmlinkage long sys_sysfs(int option,
unsigned long arg1, unsigned long arg2);
asmlinkage long sys_syslog(int type, char __user *buf, int len);
asmlinkage long sys_uselib(const char __user *library);
asmlinkage long sys_ni_syscall(void);
asmlinkage long sys_ptrace(long request, long pid, unsigned long addr,
unsigned long data);
asmlinkage long sys_add_key(const char __user *_type,
const char __user *_description,
const void __user *_payload,
size_t plen,
key_serial_t destringid);
asmlinkage long sys_request_key(const char __user *_type,
const char __user *_description,
const char __user *_callout_info,
key_serial_t destringid);
asmlinkage long sys_keyctl(int cmd, unsigned long arg2, unsigned long arg3,
unsigned long arg4, unsigned long arg5);
asmlinkage long sys_ioprio_set(int which, int who, int ioprio);
asmlinkage long sys_ioprio_get(int which, int who);
asmlinkage long sys_set_mempolicy(int mode, const unsigned long __user *nmask,
unsigned long maxnode);
asmlinkage long sys_migrate_pages(pid_t pid, unsigned long maxnode,
const unsigned long __user *from,
const unsigned long __user *to);
asmlinkage long sys_move_pages(pid_t pid, unsigned long nr_pages,
const void __user * __user *pages,
const int __user *nodes,
int __user *status,
int flags);
asmlinkage long sys_mbind(unsigned long start, unsigned long len,
unsigned long mode,
const unsigned long __user *nmask,
unsigned long maxnode,
unsigned flags);
asmlinkage long sys_get_mempolicy(int __user *policy,
unsigned long __user *nmask,
unsigned long maxnode,
unsigned long addr, unsigned long flags);
asmlinkage long sys_inotify_init(void);
asmlinkage long sys_inotify_init1(int flags);
asmlinkage long sys_inotify_add_watch(int fd, const char __user *path,
u32 mask);
asmlinkage long sys_inotify_rm_watch(int fd, __s32 wd);
asmlinkage long sys_spu_run(int fd, __u32 __user *unpc,
__u32 __user *ustatus);
asmlinkage long sys_spu_create(const char __user *name,
unsigned int flags, umode_t mode, int fd);
asmlinkage long sys_mknodat(int dfd, const char __user * filename, umode_t mode,
unsigned dev);
asmlinkage long sys_mkdirat(int dfd, const char __user * pathname, umode_t mode);
asmlinkage long sys_unlinkat(int dfd, const char __user * pathname, int flag);
asmlinkage long sys_symlinkat(const char __user * oldname,
int newdfd, const char __user * newname);
asmlinkage long sys_linkat(int olddfd, const char __user *oldname,
int newdfd, const char __user *newname, int flags);
asmlinkage long sys_renameat(int olddfd, const char __user * oldname,
int newdfd, const char __user * newname);
asmlinkage long sys_renameat2(int olddfd, const char __user *oldname,
int newdfd, const char __user *newname,
unsigned int flags);
asmlinkage long sys_futimesat(int dfd, const char __user *filename,
struct timeval __user *utimes);
asmlinkage long sys_faccessat(int dfd, const char __user *filename, int mode);
asmlinkage long sys_fchmodat(int dfd, const char __user * filename,
umode_t mode);
asmlinkage long sys_fchownat(int dfd, const char __user *filename, uid_t user,
gid_t group, int flag);
asmlinkage long sys_openat(int dfd, const char __user *filename, int flags,
umode_t mode);
asmlinkage long sys_newfstatat(int dfd, const char __user *filename,
struct stat __user *statbuf, int flag);
asmlinkage long sys_readlinkat(int dfd, const char __user *path, char __user *buf,
int bufsiz);
asmlinkage long sys_utimensat(int dfd, const char __user *filename,
struct timespec __user *utimes, int flags);
asmlinkage long sys_unshare(unsigned long unshare_flags);
asmlinkage long sys_splice(int fd_in, loff_t __user *off_in,
int fd_out, loff_t __user *off_out,
size_t len, unsigned int flags);
asmlinkage long sys_vmsplice(int fd, const struct iovec __user *iov,
unsigned long nr_segs, unsigned int flags);
asmlinkage long sys_tee(int fdin, int fdout, size_t len, unsigned int flags);
asmlinkage long sys_sync_file_range(int fd, loff_t offset, loff_t nbytes,
unsigned int flags);
asmlinkage long sys_sync_file_range2(int fd, unsigned int flags,
loff_t offset, loff_t nbytes);
asmlinkage long sys_get_robust_list(int pid,
struct robust_list_head __user * __user *head_ptr,
size_t __user *len_ptr);
asmlinkage long sys_set_robust_list(struct robust_list_head __user *head,
size_t len);
asmlinkage long sys_getcpu(unsigned __user *cpu, unsigned __user *node, struct getcpu_cache __user *cache);
asmlinkage long sys_signalfd(int ufd, sigset_t __user *user_mask, size_t sizemask);
asmlinkage long sys_signalfd4(int ufd, sigset_t __user *user_mask, size_t sizemask, int flags);
asmlinkage long sys_timerfd_create(int clockid, int flags);
asmlinkage long sys_timerfd_settime(int ufd, int flags,
const struct itimerspec __user *utmr,
struct itimerspec __user *otmr);
asmlinkage long sys_timerfd_gettime(int ufd, struct itimerspec __user *otmr);
asmlinkage long sys_eventfd(unsigned int count);
asmlinkage long sys_eventfd2(unsigned int count, int flags);
asmlinkage long sys_memfd_create(const char __user *uname_ptr, unsigned int flags);
asmlinkage long sys_userfaultfd(int flags);
asmlinkage long sys_fallocate(int fd, int mode, loff_t offset, loff_t len);
asmlinkage long sys_old_readdir(unsigned int, struct old_linux_dirent __user *, unsigned int);
asmlinkage long sys_pselect6(int, fd_set __user *, fd_set __user *,
fd_set __user *, struct timespec __user *,
void __user *);
asmlinkage long sys_ppoll(struct pollfd __user *, unsigned int,
struct timespec __user *, const sigset_t __user *,
size_t);
asmlinkage long sys_fanotify_init(unsigned int flags, unsigned int event_f_flags);
asmlinkage long sys_fanotify_mark(int fanotify_fd, unsigned int flags,
u64 mask, int fd,
const char __user *pathname);
asmlinkage long sys_syncfs(int fd);
asmlinkage long sys_fork(void);
asmlinkage long sys_vfork(void);
#ifdef CONFIG_CLONE_BACKWARDS
asmlinkage long sys_clone(unsigned long, unsigned long, int __user *, unsigned long,
int __user *);
#else
#ifdef CONFIG_CLONE_BACKWARDS3
asmlinkage long sys_clone(unsigned long, unsigned long, int, int __user *,
int __user *, unsigned long);
#else
asmlinkage long sys_clone(unsigned long, unsigned long, int __user *,
int __user *, unsigned long);
#endif
#endif
asmlinkage long sys_execve(const char __user *filename,
const char __user *const __user *argv,
const char __user *const __user *envp);
asmlinkage long sys_perf_event_open(
struct perf_event_attr __user *attr_uptr,
pid_t pid, int cpu, int group_fd, unsigned long flags);
asmlinkage long sys_mmap_pgoff(unsigned long addr, unsigned long len,
unsigned long prot, unsigned long flags,
unsigned long fd, unsigned long pgoff);
asmlinkage long sys_old_mmap(struct mmap_arg_struct __user *arg);
asmlinkage long sys_name_to_handle_at(int dfd, const char __user *name,
struct file_handle __user *handle,
int __user *mnt_id, int flag);
asmlinkage long sys_open_by_handle_at(int mountdirfd,
struct file_handle __user *handle,
int flags);
asmlinkage long sys_setns(int fd, int nstype);
asmlinkage long sys_process_vm_readv(pid_t pid,
const struct iovec __user *lvec,
unsigned long liovcnt,
const struct iovec __user *rvec,
unsigned long riovcnt,
unsigned long flags);
asmlinkage long sys_process_vm_writev(pid_t pid,
const struct iovec __user *lvec,
unsigned long liovcnt,
const struct iovec __user *rvec,
unsigned long riovcnt,
unsigned long flags);
asmlinkage long sys_kcmp(pid_t pid1, pid_t pid2, int type,
unsigned long idx1, unsigned long idx2);
asmlinkage long sys_finit_module(int fd, const char __user *uargs, int flags);
asmlinkage long sys_seccomp(unsigned int op, unsigned int flags,
const char __user *uargs);
asmlinkage long sys_getrandom(char __user *buf, size_t count,
unsigned int flags);
asmlinkage long sys_bpf(int cmd, union bpf_attr *attr, unsigned int size);
asmlinkage long sys_execveat(int dfd, const char __user *filename,
const char __user *const __user *argv,
const char __user *const __user *envp, int flags);
asmlinkage long sys_membarrier(int cmd, int flags);
asmlinkage long sys_copy_file_range(int fd_in, loff_t __user *off_in,
int fd_out, loff_t __user *off_out,
size_t len, unsigned int flags);
asmlinkage long sys_mlock2(unsigned long start, size_t len, int flags);
asmlinkage long sys_pkey_mprotect(unsigned long start, size_t len,
unsigned long prot, int pkey);
asmlinkage long sys_pkey_alloc(unsigned long flags, unsigned long init_val);
asmlinkage long sys_pkey_free(int pkey);
asmlinkage long sys_pidfd_send_signal(int pidfd, int sig,
siginfo_t __user *info,
unsigned int flags);
#endif
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