diff options
| author | Arnaldo Carvalho de Melo <acme@redhat.com> | 2021-05-21 21:59:23 +0300 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2021-05-21 21:59:23 +0300 |
| commit | f248d687e99da6799a25bbf53ca1350b84d41077 (patch) | |
| tree | edb0b90c039e34e838329ca4d96e9888a4ebfa34 /fs/namespace.c | |
| parent | 3b2f17ad1770e51b8b4e68b5069c4f1ee477eff8 (diff) | |
| parent | 011ff616ffe8df6b86ee54d14a43c8d1a96a6325 (diff) | |
| download | linux-f248d687e99da6799a25bbf53ca1350b84d41077.tar.xz | |
Merge remote-tracking branch 'torvalds/master' into perf/urgent
To pick up more UAPI updates to sync with tools/.
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'fs/namespace.c')
| -rw-r--r-- | fs/namespace.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/fs/namespace.c b/fs/namespace.c index f63337828e1c..c3f1a78ba369 100644 --- a/fs/namespace.c +++ b/fs/namespace.c @@ -3855,8 +3855,12 @@ static int can_idmap_mount(const struct mount_kattr *kattr, struct mount *mnt) if (!(m->mnt_sb->s_type->fs_flags & FS_ALLOW_IDMAP)) return -EINVAL; + /* Don't yet support filesystem mountable in user namespaces. */ + if (m->mnt_sb->s_user_ns != &init_user_ns) + return -EINVAL; + /* We're not controlling the superblock. */ - if (!ns_capable(m->mnt_sb->s_user_ns, CAP_SYS_ADMIN)) + if (!capable(CAP_SYS_ADMIN)) return -EPERM; /* Mount has already been visible in the filesystem hierarchy. */ |