[PATCH 16/24] sys: __sys_setfsuid(): handle fsid mappings
From: Christian Brauner <hidden>
Date: 2020-02-11 17:00:00
Also in:
linux-api, linux-fsdevel, lkml
Subsystem:
the rest · Maintainer:
Linus Torvalds
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