Tejun Heo 3eef34ad7d
kernfs: implement kernfs_get_parent(), kernfs_name/path() and friends ...
kernfs_node->parent and ->name are currently marked as "published"
indicating that kernfs users may access them directly; however, those
fields may get updated by kernfs_rename[_ns]() and unrestricted access
may lead to erroneous values or oops.
Protect ->parent and ->name updates with a irq-safe spinlock
kernfs_rename_lock and implement the following accessors for these
fields.
* kernfs_name() - format the node's name into the specified buffer
* kernfs_path() - format the node's path into the specified buffer
* pr_cont_kernfs_name() - pr_cont a node's name (doesn't need buffer)
* pr_cont_kernfs_path() - pr_cont a node's path (doesn't need buffer)
* kernfs_get_parent() - pin and return a node's parent
All can be called under any context. The recursive sysfs_pathname()
in fs/sysfs/dir.c is replaced with kernfs_path() and
sysfs_rename_dir_ns() is updated to use kernfs_get_parent() instead of
dereferencing parent directly.
v2: Dummy definition of kernfs_path() for !CONFIG_KERNFS was missing
static inline making it cause a lot of build warnings. Add it.
Signed-off-by: Tejun Heo <tj@kernel.org >
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org >
2014-02-07 16:05:35 -08:00
2014-01-02 10:46:41 +01:00
2014-01-30 17:20:32 -08:00
2014-01-30 11:19:05 -08:00
2014-01-28 18:44:53 -08:00
2013-12-31 20:32:26 +02:00
2014-01-09 09:53:30 +09:00
2013-12-09 14:18:33 +01:00
2014-01-24 17:17:30 -08:00
2013-12-08 13:13:52 +00:00
2014-01-25 10:49:30 -08:00
2014-01-28 18:53:01 -08:00
2014-01-25 11:17:34 -08:00
2014-01-22 23:23:54 -08:00
2014-01-26 11:00:41 -08:00
2014-01-20 11:55:23 -08:00
2014-01-03 23:41:35 +01:00
2013-12-23 14:26:17 -06:00
2014-01-16 14:25:37 +01:00
2014-01-31 09:31:14 -08:00
2013-12-23 18:34:58 -08:00
2013-12-24 13:47:40 +00:00
2014-01-31 08:59:46 -08:00
2014-01-25 13:20:36 -08:00
2014-01-24 22:39:54 +01:00
2014-01-30 10:18:43 -08:00
2014-01-23 18:49:36 -08:00
2013-12-08 18:01:56 -08:00
2014-01-17 01:59:38 +01:00
2013-11-09 00:16:28 -05:00
2013-09-24 10:35:17 +01:00
2013-12-02 11:24:18 +00:00
2013-10-27 08:40:39 -04:00
2013-12-09 15:37:58 -05:00
2013-10-17 13:31:19 -07:00
2014-01-14 14:54:00 -05:00
2013-12-24 09:35:17 -08:00
2013-11-08 08:59:44 -07:00
2013-10-16 01:16:04 +02:00
2013-09-30 14:31:02 -07:00
2013-11-13 15:45:43 +09:00
2013-11-23 22:33:57 -08:00
2013-11-14 13:41:48 +09:00
2013-11-23 22:33:56 -08:00
2014-01-28 08:09:46 -07:00
2014-01-30 16:56:54 -08:00
2013-11-08 09:04:30 -07:00
2014-01-30 16:56:54 -08:00
2014-01-13 17:32:27 +01:00
2014-01-23 16:36:56 -08:00
2014-01-15 11:33:40 +08:00
2014-01-03 23:41:42 +01:00
2014-01-13 10:48:18 -05:00
2013-12-31 11:35:12 -08:00
2014-01-30 17:07:18 -08:00
2013-12-22 23:14:27 -08:00
2013-12-04 17:19:44 +01:00
2013-10-02 11:33:23 +02:00
2014-01-21 20:18:26 -08:00
2014-01-21 16:19:48 -08:00
2014-02-01 10:43:45 -08:00
2013-10-11 07:39:14 +02:00
2013-12-05 21:28:41 +08:00
2014-01-23 18:11:00 -08:00
2014-01-23 18:11:00 -08:00
2013-11-15 09:32:21 +09:00
2014-01-10 16:27:36 -08:00
2013-12-29 15:25:48 +01:00
2013-12-02 20:43:15 +01:00
2013-12-02 20:43:14 +01:00
2013-11-09 00:16:29 -05:00
2013-10-23 10:10:20 -07:00
2013-12-04 09:33:34 -04:00
2013-09-13 15:09:52 +02:00
2013-11-14 13:41:48 +09:00
2014-01-17 02:00:44 +01:00
2013-10-30 01:21:24 +01:00
2013-11-06 12:40:27 +01:00
2014-01-15 14:19:42 +07:00
2013-11-03 23:04:56 -05:00
2013-12-12 10:39:01 -08:00
2013-10-03 16:14:12 -07:00
2013-11-15 16:47:22 -08:00
2013-09-20 10:36:34 -04:00
2014-02-07 15:42:41 -08:00
2013-11-23 22:33:51 -08:00
2014-01-09 12:43:40 +01:00
2014-01-21 16:19:41 -08:00
2013-10-31 14:49:24 +00:00
2014-01-29 20:27:23 -08:00
2014-01-09 12:43:37 +01:00
2013-10-23 10:10:12 -07:00
2013-12-11 18:06:47 +01:00
2014-01-05 12:34:29 +01:00
2013-11-09 00:16:24 -05:00
2013-11-09 00:16:23 -05:00
2014-01-15 15:39:33 -08:00
2014-01-16 10:23:02 +10:30
2013-09-27 09:37:01 +09:00
2014-01-06 16:42:20 +09:00
2013-12-18 10:56:13 +10:00
2013-09-26 15:06:58 -07:00
2013-09-26 15:06:58 -07:00
2014-01-25 03:14:36 -05:00
2014-01-21 18:57:43 -08:00
2013-12-08 18:22:32 -08:00
2014-01-21 23:17:20 -08:00
2014-01-25 23:58:17 -05:00
2013-09-27 18:40:25 +01:00
2013-09-27 18:40:25 +01:00
2014-01-29 13:57:10 +01:00
2014-01-09 21:20:07 -05:00
2014-01-02 16:17:12 -05:00
2014-01-23 16:36:52 -08:00
2013-11-19 16:39:06 -05:00
2014-01-23 16:36:50 -08:00
2013-11-25 09:03:39 +01:00
2014-01-13 17:32:27 +01:00
2013-12-17 14:27:17 -05:00
2013-10-11 17:21:14 +11:00
2013-12-02 21:05:30 +00:00
2013-12-24 10:30:57 -08:00
2013-09-13 15:11:21 +02:00
2013-09-26 15:06:58 -07:00
2013-12-19 09:29:43 +01:00
2014-01-21 16:19:43 -08:00
2014-01-23 16:36:50 -08:00
2014-01-23 16:36:50 -08:00
2013-10-13 16:16:26 -07:00
2013-10-13 16:16:28 -07:00
2013-09-29 18:27:03 -07:00
2014-01-16 11:15:50 +01:00
2014-01-29 20:40:08 +01:00
2014-01-26 22:48:35 +01:00
2013-12-07 01:03:14 +01:00
2014-01-10 20:12:13 +01:00
2014-01-04 20:11:33 -05:00
2014-01-04 20:10:24 -05:00
2014-01-05 20:27:55 -05:00
2013-12-29 16:34:25 -05:00
2013-12-11 14:47:40 -05:00
2014-01-23 18:08:10 -08:00
2013-12-10 22:58:13 -08:00
2014-01-09 12:43:40 +01:00
2014-01-27 21:02:40 -08:00
2014-01-09 13:06:59 +01:00
2014-01-27 21:02:40 -08:00
2014-01-27 21:02:39 -08:00
2014-01-19 19:53:18 -08:00
2013-11-13 16:03:02 +01:00
2013-12-19 17:43:04 +00:00
2013-09-13 15:09:52 +02:00
2013-11-19 19:06:41 +01:00
2013-12-07 01:24:33 +01:00
2014-01-16 00:08:12 +01:00
2013-10-19 19:45:35 -04:00
2014-01-08 15:23:53 +00:00
2013-10-03 18:47:54 +02:00
2013-09-13 15:09:52 +02:00
2013-11-13 12:09:07 +09:00
2014-01-25 11:17:34 -08:00
2014-02-07 16:05:35 -08:00
2014-01-23 16:37:03 -08:00
2013-09-25 17:17:01 +01:00
2013-09-25 17:17:01 +01:00
2013-11-15 09:32:23 +09:00
2014-01-25 08:55:09 +01:00
2013-12-11 15:28:36 -08:00
2014-01-21 16:19:45 -08:00
2014-01-08 19:03:00 -02:00
2013-11-09 00:16:21 -05:00
2014-01-16 09:49:10 -05:00
2014-01-27 21:45:29 +01:00
2013-11-13 12:09:24 +09:00
2013-11-15 09:32:22 +09:00
2013-11-06 12:40:26 +01:00
2013-12-20 12:25:45 -08:00
2013-12-11 15:52:34 +01:00
2013-12-26 13:29:35 -05:00
2014-01-23 16:36:51 -08:00
2014-01-23 16:36:51 -08:00
2013-11-13 12:09:06 +09:00
2013-12-20 12:20:26 -08:00
2014-01-21 16:19:44 -08:00
2013-12-11 13:54:13 -05:00
2014-01-21 16:19:49 -08:00
2013-12-19 10:17:11 -07:00
2013-12-20 12:25:45 -08:00
2014-01-27 21:11:26 -08:00
2014-01-21 16:19:44 -08:00
2014-01-23 16:36:50 -08:00
2014-01-21 16:19:48 -08:00
2014-01-16 10:23:03 +10:30
2013-11-09 00:16:19 -05:00
2014-01-27 21:02:39 -08:00
2013-12-13 08:44:30 -07:00
2013-11-11 12:41:33 +01:00
2013-11-09 00:16:19 -05:00
2014-01-14 15:15:25 -08:00
2013-11-07 19:11:41 -05:00
2014-01-22 21:57:17 -08:00
2013-09-26 14:48:15 -07:00
2013-09-26 14:48:15 -07:00
2013-09-26 14:48:15 -07:00
2013-10-14 17:15:48 +02:00
2014-01-01 23:43:36 -05:00
2013-10-25 19:26:58 -04:00
2013-12-05 13:05:48 -08:00
2013-10-28 15:37:43 -04:00
2014-01-31 15:39:07 -08:00
2013-10-28 15:38:02 -04:00
2014-01-25 03:14:05 -05:00
2013-10-09 20:04:10 -05:00
2014-01-17 01:59:15 +01:00
2014-01-09 17:52:17 -06:00
2013-10-29 18:26:14 -07:00
2013-11-08 10:47:28 -06:00
2014-01-13 14:29:49 -08:00
2014-01-03 11:22:21 -08:00
2013-10-24 11:50:36 +01:00
2014-01-23 16:36:55 -08:00
2013-11-13 12:09:04 +09:00
2013-10-30 12:02:58 +08:00
2013-10-09 14:47:45 +02:00
2014-01-23 16:36:50 -08:00
2014-01-23 16:36:50 -08:00
2014-01-23 16:36:55 -08:00
2013-12-07 01:03:14 +01:00
2013-09-15 17:41:30 -04:00
2013-11-14 23:17:21 +01:00
2014-01-10 14:00:47 -07:00
2014-01-22 16:39:28 -08:00
2013-11-14 11:28:18 -07:00
2014-01-23 20:17:18 +00:00
2013-12-05 12:59:23 -05:00
2014-01-23 16:36:50 -08:00
2014-01-12 10:16:07 +01:00
2014-01-13 14:29:49 -08:00
2013-10-24 23:43:29 -04:00
2014-01-22 19:36:57 +01:00
2013-09-26 16:18:32 -07:00
2013-10-25 22:33:23 +02:00
2013-12-22 01:39:58 +01:00
2014-01-12 23:50:03 +01:00
2014-01-25 23:58:17 -05:00
2014-01-28 08:38:04 -08:00
2013-12-23 18:21:11 -08:00
2013-10-17 00:36:06 +02:00
2014-01-13 17:32:27 +01:00
2014-01-23 14:48:35 +01:00
2014-01-25 11:17:34 -08:00
2013-11-26 20:55:33 -08:00
2013-12-20 13:12:01 -08:00
2013-10-16 09:05:57 +02:00
2014-01-23 16:36:58 -08:00
2014-01-21 23:17:20 -08:00
2013-11-13 12:09:33 +09:00
2013-12-12 12:34:16 -08:00
2014-01-28 08:38:04 -08:00
2013-12-12 12:34:16 -08:00
2013-12-12 12:34:16 -08:00
2013-12-18 19:04:50 -08:00
2014-01-21 23:17:20 -08:00
2014-01-09 14:34:13 +00:00
2013-09-12 15:38:02 -07:00
2014-01-16 12:00:56 -08:00
2014-01-21 16:19:45 -08:00
2014-01-13 13:41:50 +01:00
2013-12-17 21:19:08 -08:00
2014-01-13 13:47:36 +01:00
2014-01-28 13:20:09 -08:00
2013-12-08 17:56:37 -08:00
2013-10-09 16:54:39 -07:00
2014-01-23 16:37:02 -08:00
2014-01-19 19:55:50 -08:00
2013-10-22 22:26:41 +11:00
2013-11-15 09:32:20 +09:00
2014-01-12 10:13:59 +01:00
2014-01-23 13:02:36 +01:00
2013-10-16 13:16:19 -07:00
2013-12-24 21:50:54 +09:00
2013-12-07 01:24:33 +01:00
2013-10-17 16:41:50 -07:00
2013-12-19 19:09:38 -05:00
2014-01-27 21:02:39 -08:00
2013-12-02 11:24:19 +00:00
2014-01-26 22:38:23 -08:00
2014-01-25 11:17:34 -08:00
2014-02-02 11:30:08 -08:00
2013-11-22 08:10:34 -08:00
2014-01-30 16:56:54 -08:00
2014-01-22 21:57:05 -08:00
2014-01-13 13:47:36 +01:00
2014-01-13 13:47:36 +01:00
2013-12-16 11:36:13 +01:00
2014-01-27 21:02:40 -08:00
2013-11-06 09:32:09 +02:00
2014-01-21 08:28:07 +00:00
2014-01-21 17:05:27 -08:00
2013-10-09 12:40:45 +02:00
2013-09-12 15:38:02 -07:00
2013-11-15 09:32:14 +09:00
2014-01-13 13:41:04 +01:00
2014-02-07 15:42:41 -08:00
2013-10-16 13:01:44 -07:00
2013-12-07 01:03:14 +01:00
2014-01-06 16:34:34 -05:00
2014-01-14 08:01:10 -08:00
2013-12-04 09:31:34 -04:00
2013-10-17 14:38:44 +02:00
2013-09-25 13:53:10 +02:00
2014-01-15 23:05:31 +01:00
2013-10-10 12:31:43 -07:00
2013-09-20 12:03:46 +02:00
2014-01-06 14:37:25 +01:00
2013-12-19 15:08:32 +01:00
2013-12-09 11:09:24 -08:00
2013-12-08 16:56:05 -08:00
2014-01-20 16:13:02 -08:00
2013-11-06 12:40:25 +01:00
2014-01-13 13:47:37 +01:00
2013-11-26 20:55:33 -08:00
2013-11-20 16:31:01 +01:00
2013-10-16 13:32:04 -07:00
2014-01-10 16:54:35 -08:00
2013-09-24 10:35:19 +01:00
2013-10-11 15:19:22 +10:00
2013-10-17 10:55:37 +10:30
2013-10-29 11:28:11 +10:30
2013-10-29 11:28:17 +10:30
2013-11-13 12:09:11 +09:00
2013-12-03 11:15:58 -08:00
2013-11-22 18:20:43 -05:00
2014-01-29 16:22:39 -08:00
2013-12-02 20:43:15 +01:00
2014-01-23 16:37:04 -08:00
2014-01-22 10:25:39 +01:00
2013-11-13 12:09:07 +09:00
2013-10-17 15:53:09 -04:00
2013-11-26 11:09:08 +01:00
2014-01-30 16:56:55 -08:00
3eef34ad7d