[PATCH v2 21/39] af_unix: handle idmapped mounts

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 <hch(a)lst.de&gt; Cc: David Howells <dhowells(a)redhat.com&gt; Cc: Al Viro <viro(a)zeniv.linux.org.uk&gt; Cc: linux-fsdevel(a)vger.kernel.org Signed-off-by: Christian Brauner <christian.brauner(a)ubuntu.com&gt; --- /* 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