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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2021-06-29 20:07:06 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2021-06-29 20:07:06 -0700 |
| commit | 30d1a556a9970e02794501068fd91d4417363f0a (patch) | |
| tree | 4f45ae0a72e40eb6906b50d0a73e5124e6b5508e /fs | |
| parent | 65090f30ab791810a3dc840317e57df05018559c (diff) | |
| parent | 5990b5d770cbfe2b4254d870240e9863aca421e3 (diff) | |
Merge tag 'fs.mount_setattr.nosymfollow.v5.14' of git://git.kernel.org/pub/scm/linux/kernel/git/brauner/linux
Pull mount_setattr updates from Christian Brauner:
"A few releases ago the old mount API gained support for a mount
options which prevents following symlinks on a given mount. This adds
support for it in the new mount api through the MOUNT_ATTR_NOSYMFOLLOW
flag via mount_setattr() and fsmount(). With mount_setattr() that flag
can even be applied recursively.
There's an additional ack from Ross Zwisler who originally authored
the nosymfollow patch. As I've already had the patches in my for-next
I didn't add his ack explicitly"
* tag 'fs.mount_setattr.nosymfollow.v5.14' of git://git.kernel.org/pub/scm/linux/kernel/git/brauner/linux:
tests: test MOUNT_ATTR_NOSYMFOLLOW with mount_setattr()
mount: Support "nosymfollow" in new mount api
Diffstat (limited to 'fs')
| -rw-r--r-- | fs/namespace.c | 9 |
1 files changed, 6 insertions, 3 deletions
diff --git a/fs/namespace.c b/fs/namespace.c index c3f1a78ba369..ab4174a3c802 100644 --- a/fs/namespace.c +++ b/fs/namespace.c @@ -3464,9 +3464,10 @@ out_type: return ret; } -#define FSMOUNT_VALID_FLAGS \ - (MOUNT_ATTR_RDONLY | MOUNT_ATTR_NOSUID | MOUNT_ATTR_NODEV | \ - MOUNT_ATTR_NOEXEC | MOUNT_ATTR__ATIME | MOUNT_ATTR_NODIRATIME) +#define FSMOUNT_VALID_FLAGS \ + (MOUNT_ATTR_RDONLY | MOUNT_ATTR_NOSUID | MOUNT_ATTR_NODEV | \ + MOUNT_ATTR_NOEXEC | MOUNT_ATTR__ATIME | MOUNT_ATTR_NODIRATIME | \ + MOUNT_ATTR_NOSYMFOLLOW) #define MOUNT_SETATTR_VALID_FLAGS (FSMOUNT_VALID_FLAGS | MOUNT_ATTR_IDMAP) @@ -3487,6 +3488,8 @@ static unsigned int attr_flags_to_mnt_flags(u64 attr_flags) mnt_flags |= MNT_NOEXEC; if (attr_flags & MOUNT_ATTR_NODIRATIME) mnt_flags |= MNT_NODIRATIME; + if (attr_flags & MOUNT_ATTR_NOSYMFOLLOW) + mnt_flags |= MNT_NOSYMFOLLOW; return mnt_flags; } |