When binding a non-abstract AF_UNIX socket it will gain a representation in the
filesystem. Enable the socket infrastructure to handle idmapped mounts by
passing down the user namespace of the mount the socket will be created
from. Non-idmapped mounts will not see any altered behavior.
Cc: Christoph Hellwig <h...@lst.de>
Cc: David Howells <dhowe...@redhat.com>
Cc: Al Viro <v...@zeniv.linux.org.uk>
Cc: linux-fsde...@vger.kernel.org
Signed-off-by: Christian Brauner <christian.brau...@ubuntu.com>
---
/* v2 */
unchanged
---
net/unix/af_unix.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/net/unix/af_unix.c b/net/unix/af_unix.c
index b4987805e5e5..4be33240e9cc 100644
--- a/net/unix/af_unix.c
+++ b/net/unix/af_unix.c
@@ -996,7 +996,7 @@ static int unix_mknod(const char *sun_path, umode_t mode,
struct path *res)
*/
err = security_path_mknod(&path, dentry, mode, 0);
if (!err) {
- err = vfs_mknod(&init_user_ns, d_inode(path.dentry), dentry,
mode, 0);
+ err = vfs_mknod(mnt_user_ns(path.mnt), d_inode(path.dentry),
dentry, mode, 0);
if (!err) {
res->mnt = mntget(path.mnt);
res->dentry = dget(dentry);
--
2.29.2
--
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