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| author |   Miklos Szeredi <mszeredi@redhat.com> | 2020-12-14 15:26:14 +0100 |
|---|---|---|
| committer | Miklos Szeredi <mszeredi@redhat.com> | 2020-12-14 15:26:14 +0100 |
| commit | 459c7c565ac36ba09ffbf24231147f408fde4203 (patch) | |
| tree | 2806289c44bad81d9ac26f8f217c6306c69d32e4 /fs/overlayfs | |
| parent | ovl: do not get metacopy for userxattr (diff) | |
| download | linux-dev-459c7c565ac36ba09ffbf24231147f408fde4203.tar.xz linux-dev-459c7c565ac36ba09ffbf24231147f408fde4203.zip | |
ovl: unprivieged mounts
Enable unprivileged user namespace mounts of overlayfs. Overlayfs's
permission model (*) ensures that the mounter itself cannot gain additional
privileges by the act of creating an overlayfs mount.
This feature request is coming from the "rootless" container crowd.
(*) Documentation/filesystems/overlayfs.txt#Permission model
Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
Diffstat (limited to 'fs/overlayfs')
| -rw-r--r-- | fs/overlayfs/super.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/fs/overlayfs/super.c b/fs/overlayfs/super.c index 6366adf81fa3..2bd570cbe8a4 100644 --- a/fs/overlayfs/super.c +++ b/fs/overlayfs/super.c @@ -2096,6 +2096,7 @@ static struct dentry *ovl_mount(struct file_system_type *fs_type, int flags, static struct file_system_type ovl_fs_type = { .owner = THIS_MODULE, .name = "overlay", + .fs_flags = FS_USERNS_MOUNT, .mount = ovl_mount, .kill_sb = kill_anon_super, }; |