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authorChristian Brauner <christian.brauner@ubuntu.com>2021-01-21 14:19:36 +0100
committerChristian Brauner <christian.brauner@ubuntu.com>2021-01-24 14:27:18 +0100
commit7c02cf73d0e2bfa18b321731dd35212eb6c92265 (patch)
tree433a5941a07e80a6610df72ae753e75e5bec0710 /net/unix
parentb8b546a061884d98ba6ac6b4a0d1ee6566031cf5 (diff)
downloadlinux-7c02cf73d0e2bfa18b321731dd35212eb6c92265.tar.bz2
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. If the initial user namespace is passed nothing changes so non-idmapped mounts will see identical behavior as before. Link: https://lore.kernel.org/r/20210121131959.646623-18-christian.brauner@ubuntu.com Cc: Christoph Hellwig <hch@lst.de> Cc: David Howells <dhowells@redhat.com> Cc: Al Viro <viro@zeniv.linux.org.uk> Cc: linux-fsdevel@vger.kernel.org Reviewed-by: Christoph Hellwig <hch@lst.de> Reviewed-by: James Morris <jamorris@linux.microsoft.com> Signed-off-by: Christian Brauner <christian.brauner@ubuntu.com>
Diffstat (limited to 'net/unix')
-rw-r--r--net/unix/af_unix.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/net/unix/af_unix.c b/net/unix/af_unix.c
index 9a1f3c04402e..5a31307ceb76 100644
--- a/net/unix/af_unix.c
+++ b/net/unix/af_unix.c
@@ -996,8 +996,8 @@ 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);