diff options
Diffstat (limited to 'fs/sysfs')
| -rw-r--r-- | fs/sysfs/mount.c | 11 |
1 files changed, 9 insertions, 2 deletions
diff --git a/fs/sysfs/mount.c b/fs/sysfs/mount.c index fd7ce7a39f9..834ec2cdb7a 100644 --- a/fs/sysfs/mount.c +++ b/fs/sysfs/mount.c @@ -112,8 +112,15 @@ static struct dentry *sysfs_mount(struct file_system_type *fs_type, struct super_block *sb; int error; - if (!(flags & MS_KERNMOUNT) && !current_user_ns()->may_mount_sysfs) - return ERR_PTR(-EPERM); + if (!(flags & MS_KERNMOUNT)) { + if (!capable(CAP_SYS_ADMIN) && !fs_fully_visible(fs_type)) + return ERR_PTR(-EPERM); + + for (type = KOBJ_NS_TYPE_NONE; type < KOBJ_NS_TYPES; type++) { + if (!kobj_ns_current_may_mount(type)) + return ERR_PTR(-EPERM); + } + } info = kzalloc(sizeof(*info), GFP_KERNEL); if (!info) |