diff options
| author |   Russell King <rmk+kernel@armlinux.org.uk> | 2016-11-01 09:17:57 +0000 |
|---|---|---|
| committer | Russell King <rmk+kernel@armlinux.org.uk> | 2016-11-01 09:17:57 +0000 |
| commit | 9902aa4728fe9128ea45f1a772e2238d64d8cdc5 (patch) | |
| tree | cca30efb3ad2126fcb10aa6349ed799a5656e851 /ipc/mqueue.c | |
| parent | ARM: dts: am335x-boneblack: Add HDMI audio support (diff) | |
| parent | drm/i2c: tda998x: mali-dp: hdlcd: refactor connector registration (diff) | |
Merge branch 'drm-tda998x-mali' into drm-tda998x-devel
Diffstat (limited to 'ipc/mqueue.c')
| -rw-r--r-- | ipc/mqueue.c | 20 |
1 files changed, 9 insertions, 11 deletions
diff --git a/ipc/mqueue.c b/ipc/mqueue.c index ade739f67f1d..0b13ace266f2 100644 --- a/ipc/mqueue.c +++ b/ipc/mqueue.c @@ -305,8 +305,9 @@ err: static int mqueue_fill_super(struct super_block *sb, void *data, int silent) { struct inode *inode; - struct ipc_namespace *ns = data; + struct ipc_namespace *ns = sb->s_fs_info; + sb->s_iflags |= SB_I_NOEXEC | SB_I_NODEV; sb->s_blocksize = PAGE_SIZE; sb->s_blocksize_bits = PAGE_SHIFT; sb->s_magic = MQUEUE_MAGIC; @@ -326,17 +327,14 @@ static struct dentry *mqueue_mount(struct file_system_type *fs_type, int flags, const char *dev_name, void *data) { - if (!(flags & MS_KERNMOUNT)) { - struct ipc_namespace *ns = current->nsproxy->ipc_ns; - /* Don't allow mounting unless the caller has CAP_SYS_ADMIN - * over the ipc namespace. - */ - if (!ns_capable(ns->user_ns, CAP_SYS_ADMIN)) - return ERR_PTR(-EPERM); - - data = ns; + struct ipc_namespace *ns; + if (flags & MS_KERNMOUNT) { + ns = data; + data = NULL; + } else { + ns = current->nsproxy->ipc_ns; } - return mount_ns(fs_type, flags, data, mqueue_fill_super); + return mount_ns(fs_type, flags, data, ns, ns->user_ns, mqueue_fill_super); } static void init_once(void *foo) |