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| author |   Christian Brauner <christian.brauner@ubuntu.com> | 2021-07-14 15:47:50 +0200 |
|---|---|---|
| committer |   Linus Torvalds <torvalds@linux-foundation.org> | 2021-07-14 09:19:06 -0700 |
| commit | d1d488d813703618f0dd93f0e4c4a05928114aa8 (patch) | |
| tree | b1115033156bb1945244b3000489d84a4b5a68ee /Documentation/ABI/testing/sysfs-ptp | |
| parent | cgroup: verify that source is a string (diff) | |
| download | linux-dev-d1d488d813703618f0dd93f0e4c4a05928114aa8.tar.xz linux-dev-d1d488d813703618f0dd93f0e4c4a05928114aa8.zip | |
fs: add vfs_parse_fs_param_source() helper
Add a simple helper that filesystems can use in their parameter parser
to parse the "source" parameter. A few places open-coded this function
and that already caused a bug in the cgroup v1 parser that we fixed.
Let's make it harder to get this wrong by introducing a helper which
performs all necessary checks.
Link: https://syzkaller.appspot.com/bug?id=6312526aba5beae046fdae8f00399f87aab48b12
Cc: Christoph Hellwig <hch@lst.de>
Cc: Alexander Viro <viro@zeniv.linux.org.uk>
Cc: Dmitry Vyukov <dvyukov@google.com>
Signed-off-by: Christian Brauner <christian.brauner@ubuntu.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'Documentation/ABI/testing/sysfs-ptp')
0 files changed, 0 insertions, 0 deletions