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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2017-05-12 11:39:59 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2017-05-12 11:39:59 -0700 |
| commit | 050453295f808dd683b9a88f58a1b29540097394 (patch) | |
| tree | 1d43b39b72779d9133de345a96a6ea92cf96582c /include | |
| parent | e0c4a5fc750e22c6f8d5c1ab7cc18592b88852ab (diff) | |
| parent | 4f757f3cbf54edef7b75c68d6d6d2f1a0ca08d2e (diff) | |
Merge branch 'work.sane_pwd' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
Pull misc vfs updates from Al Viro:
"Making sure that something like a referral point won't end up as pwd
or root.
The main part is the last commit (fixing mntns_install()); that one
fixes a hard-to-hit race. The fchdir() commit is making fchdir(2) a
bit more robust - it should be impossible to get opened files (even
O_PATH ones) for referral points in the first place, so the existing
checks are OK, but checking the same thing as in chdir(2) is just as
cheap.
The path_init() commit removes a redundant check that shouldn't have
been there in the first place"
* 'work.sane_pwd' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
make sure that mntns_install() doesn't end up with referral for root
path_init(): don't bother with checking MAY_EXEC for LOOKUP_ROOT
make sure that fchdir() won't accept referral points, etc.
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/namei.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/linux/namei.h b/include/linux/namei.h index f29abda31e6d..8b4794e83196 100644 --- a/include/linux/namei.h +++ b/include/linux/namei.h @@ -44,6 +44,7 @@ enum {LAST_NORM, LAST_ROOT, LAST_DOT, LAST_DOTDOT, LAST_BIND}; #define LOOKUP_JUMPED 0x1000 #define LOOKUP_ROOT 0x2000 #define LOOKUP_EMPTY 0x4000 +#define LOOKUP_DOWN 0x8000 extern int path_pts(struct path *path); |