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| author | Rusty Russell <rusty@rustcorp.com.au> | 2014-03-24 05:30:34 +0400 |
|---|---|---|
| committer | Rusty Russell <rusty@rustcorp.com.au> | 2014-03-24 05:51:00 +0400 |
| commit | 58f86cc89c3372d3e61d5b71e5513ec5a0b02848 (patch) | |
| tree | ba12cb68846c5e4e04d3442528dee70e58100859 /include/linux/sysfs.h | |
| parent | c6bda7c988a57958108741cde9b1f12e9727a938 (diff) | |
| download | linux-58f86cc89c3372d3e61d5b71e5513ec5a0b02848.tar.xz | |
VERIFY_OCTAL_PERMISSIONS: stricter checking for sysfs perms.
Summary of http://lkml.org/lkml/2014/3/14/363 :
Ted: module_param(queue_depth, int, 444)
Joe: 0444!
Rusty: User perms >= group perms >= other perms?
Joe: CLASS_ATTR, DEVICE_ATTR, SENSOR_ATTR and SENSOR_ATTR_2?
Side effect of stricter permissions means removing the unnecessary
S_IFREG from several callers.
Note that the BUILD_BUG_ON_ZERO((perm) & 2) test was removed: a fair
number of drivers fail this test, so that will be the debate for a
future patch.
Suggested-by: Joe Perches <joe@perches.com>
Acked-by: Bjorn Helgaas <bhelgaas@google.com> for drivers/pci/slot.c
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Miklos Szeredi <miklos@szeredi.hu>
Cc: Mark Fasheh <mfasheh@suse.com>
Cc: Joel Becker <jlbec@evilplan.org>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Diffstat (limited to 'include/linux/sysfs.h')
| -rw-r--r-- | include/linux/sysfs.h | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/include/linux/sysfs.h b/include/linux/sysfs.h index 30b2ebee6439..f517e6e488c8 100644 --- a/include/linux/sysfs.h +++ b/include/linux/sysfs.h @@ -71,7 +71,8 @@ struct attribute_group { */ #define __ATTR(_name, _mode, _show, _store) { \ - .attr = {.name = __stringify(_name), .mode = _mode }, \ + .attr = {.name = __stringify(_name), \ + .mode = VERIFY_OCTAL_PERMISSIONS(_mode) }, \ .show = _show, \ .store = _store, \ } |