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| author | Arnd Bergmann <arnd@arndb.de> | 2013-04-08 18:00:45 +0200 |
|---|---|---|
| committer | Arnd Bergmann <arnd@arndb.de> | 2013-04-08 18:00:45 +0200 |
| commit | 8bd2bcf320cfd0e7118da61d186c8466a247ef62 (patch) | |
| tree | d95f86afbfa833e46403b021d1ce71f6815e1978 /ipc/mqueue.c | |
| parent | 21b3ac76b1bd31ec22bd00fff7d0259c86b8b957 (diff) | |
| parent | 105612489bf59386b46b3f9f034e03f70e57aee6 (diff) | |
Merge tag 'omap-for-v3.10/fixes-non-critical-signed' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap into next/fixes-non-critical
From Tony Lindgren <tony@atomide.com>:
Non critical omap fixes for v3.10 merge window. A big chunk
of these fixes are needed to support omap5 es2 version that includes
PM features while the earlier version es1 did not.
* tag 'omap-for-v3.10/fixes-non-critical-signed' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap:
ARM: OMAP2+: fix typo "CONFIG_BRIDGE_DVFS"
ARM: OMAP1: remove "config MACH_OMAP_HTCWIZARD"
ARM: OMAP: dpll: enable bypass clock only when attempting dpll bypass
ARM: OMAP2+: powerdomain: avoid testing whether an unsigned char is less than 0
ARM: OMAP2+: hwmod: Remove unused _HWMOD_WAKEUP_ENABLED flag
ARM: OMAP2+: am335x: Change the wdt1 func clk src to per_32k clk
ARM: OMAP2+: AM33xx: hwmod: Add missing sysc definition to wdt1 entry
Contains an update to 3.9-rc5
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Diffstat (limited to 'ipc/mqueue.c')
| -rw-r--r-- | ipc/mqueue.c | 15 |
1 files changed, 12 insertions, 3 deletions
diff --git a/ipc/mqueue.c b/ipc/mqueue.c index e5c4f609f22..e4e47f64744 100644 --- a/ipc/mqueue.c +++ b/ipc/mqueue.c @@ -330,8 +330,16 @@ static struct dentry *mqueue_mount(struct file_system_type *fs_type, int flags, const char *dev_name, void *data) { - if (!(flags & MS_KERNMOUNT)) - data = current->nsproxy->ipc_ns; + 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; + } return mount_ns(fs_type, flags, data, mqueue_fill_super); } @@ -840,7 +848,8 @@ out_putfd: fd = error; } mutex_unlock(&root->d_inode->i_mutex); - mnt_drop_write(mnt); + if (!ro) + mnt_drop_write(mnt); out_putname: putname(name); return fd; |