diff options
Diffstat (limited to 'fs/coda/psdev.c')
| -rw-r--r-- | fs/coda/psdev.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/fs/coda/psdev.c b/fs/coda/psdev.c index 761d5b31b18d..ebc2bae6c289 100644 --- a/fs/coda/psdev.c +++ b/fs/coda/psdev.c @@ -37,6 +37,7 @@ #include <linux/list.h> #include <linux/mutex.h> #include <linux/device.h> +#include <linux/pid_namespace.h> #include <asm/io.h> #include <asm/poll.h> #include <asm/uaccess.h> @@ -266,6 +267,12 @@ static int coda_psdev_open(struct inode * inode, struct file * file) struct venus_comm *vcp; int idx, err; + if (task_active_pid_ns(current) != &init_pid_ns) + return -EINVAL; + + if (current_user_ns() != &init_user_ns) + return -EINVAL; + idx = iminor(inode); if (idx < 0 || idx >= MAX_CODADEVS) return -ENODEV; |