[PATCH 17/24] sys: __sys_setfsgid(): handle fsid mappings

Christian Brauner christian.brauner at ubuntu.com
Tue Feb 11 16:57:46 UTC 2020


Switch setfsgid() 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 <christian.brauner at ubuntu.com>
---
 kernel/sys.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/kernel/sys.c b/kernel/sys.c
index ae376d32c1e3..b89334ad0908 100644
--- a/kernel/sys.c
+++ b/kernel/sys.c
@@ -847,9 +847,9 @@ long __sys_setfsgid(gid_t gid)
 	kgid_t kgid;
 
 	old = current_cred();
-	old_fsgid = from_kgid_munged(old->user_ns, old->fsgid);
+	old_fsgid = from_kfsgid_munged(old->user_ns, old->fsgid);
 
-	kgid = make_kgid(old->user_ns, gid);
+	kgid = make_kfsgid(old->user_ns, gid);
 	if (!gid_valid(kgid))
 		return old_fsgid;
 
-- 
2.25.0



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