[PATCH 16/24] sys: __sys_setfsuid(): handle fsid mappings
STALE2424d
From: Christian Brauner <hidden>
Date: 2020-02-11 17:00:00
Also in:
linux-fsdevel, linux-security-module, lkml
Subsystem:
the rest · Maintainer:
Linus Torvalds
Revision v1 of 3 in this series.
Revisions (3)
- v1 current
- v2 [diff vs current]
- v3 [diff vs current]
Switch setfsuid() to lookup fsids in the fsid mappings. If no fsid mappings are setup the behavior is unchanged, i.e. fsids are looked up in the id mappings. Signed-off-by: Christian Brauner <redacted> --- kernel/sys.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-)
diff --git a/kernel/sys.c b/kernel/sys.c
index a9331f101883..ae376d32c1e3 100644
--- a/kernel/sys.c
+++ b/kernel/sys.c@@ -59,6 +59,7 @@ #include <linux/sched/cputime.h> #include <linux/rcupdate.h> #include <linux/uidgid.h> +#include <linux/fsuidgid.h> #include <linux/cred.h> #include <linux/nospec.h>
@@ -802,9 +803,9 @@ long __sys_setfsuid(uid_t uid) kuid_t kuid; old = current_cred(); - old_fsuid = from_kuid_munged(old->user_ns, old->fsuid); + old_fsuid = from_kfsuid_munged(old->user_ns, old->fsuid); - kuid = make_kuid(old->user_ns, uid); + kuid = make_kfsuid(old->user_ns, uid); if (!uid_valid(kuid)) return old_fsuid;
--
2.25.0