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| author | Eric Paris <eparis@redhat.com> | 2013-11-22 18:57:08 -0500 |
|---|---|---|
| committer | Eric Paris <eparis@redhat.com> | 2013-11-22 18:57:54 -0500 |
| commit | fc582aef7dcc27a7120cf232c1e76c569c7b6eab (patch) | |
| tree | 7d275dd4ceab6067b91e9a25a5f6338b425fbccd /fs/sysfs/mount.c | |
| parent | 9175c9d2aed528800175ef81c90569d00d23f9be (diff) | |
| parent | 5e01dc7b26d9f24f39abace5da98ccbd6a5ceb52 (diff) | |
Merge tag 'v3.12'
Linux 3.12
Conflicts:
fs/exec.c
Diffstat (limited to 'fs/sysfs/mount.c')
| -rw-r--r-- | fs/sysfs/mount.c | 13 |
1 files changed, 10 insertions, 3 deletions
diff --git a/fs/sysfs/mount.c b/fs/sysfs/mount.c index afd83273e6ce..834ec2cdb7a3 100644 --- a/fs/sysfs/mount.c +++ b/fs/sysfs/mount.c @@ -64,7 +64,7 @@ static int sysfs_fill_super(struct super_block *sb, void *data, int silent) /* instantiate and link root dentry */ root = d_make_root(inode); if (!root) { - pr_debug("%s: could not get root dentry!\n",__func__); + pr_debug("%s: could not get root dentry!\n", __func__); return -ENOMEM; } root->d_fsdata = &sysfs_root; @@ -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) |