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| author | Paulo Alcantara <pc@manguebit.org> | 2026-09-06 14:39:44 -0300 |
|---|---|---|
| committer | Paulo Alcantara <pc@manguebit.org> | 2026-09-08 11:29:10 -0300 |
| commit | cf4d35896621b7298eef51b7a465e5c0cb22f670 (patch) | |
| tree | 40d9ca53cf3bb649b5688b9619218367cf165a46 /scripts/basic | |
| parent | 5520e89a5a4f834bced64cf2ac927001cc513a40 (diff) | |
| download | linux-cf4d35896621b7298eef51b7a465e5c0cb22f670.tar.gz linux-cf4d35896621b7298eef51b7a465e5c0cb22f670.zip | |
smb: client: fix uid/gid override in getattr with posix extensions
When mounting with 'multiuser,posix' options, cifs_getattr() overrides
the server-provided uid/gid with the current process's fsuid/fsgid.
This is because the condition only checks for unix extensions
(tcon->unix_ext) but not posix extensions (tcon->posix_extensions).
With SMB3 POSIX extensions, the server provides real uid/gid values
just like with unix extensions, so they should be preserved rather
than replaced with the caller's credentials.
Add a tcon->posix_extensions check to the condition so that uid/gid
from the server are properly reported in stat results.
Reported-by: Arthur Lesuisse <arthur.lesuisse@ulb.be>
Closes: https://lore.kernel.org/r/DB9P190MB2012266F6B8DECBE5D26A1798DB52@DB9P190MB2012.EURP190.PROD.OUTLOOK.COM
Suggested-by: Arthur Lesuisse <arthur.lesuisse@ulb.be>
Reviewed-by: Namjae Jeon <linkinjeon@kernel.org>
Signed-off-by: Paulo Alcantara <pc@manguebit.org>
Cc: Ronnie Sahlberg <ronniesahlberg@gmail.com>
Cc: Shyam Prasad N <sprasad@microsoft.com>
Cc: Tom Talpey <tom@talpey.com>
Cc: Bharath SM <bharathsm@microsoft.com>
Cc: stable@vger.kernel.org
Diffstat (limited to 'scripts/basic')
0 files changed, 0 insertions, 0 deletions