diff options
Diffstat (limited to 'fs/ecryptfs/messaging.c')
| -rw-r--r-- | fs/ecryptfs/messaging.c | 10 |
1 files changed, 9 insertions, 1 deletions
diff --git a/fs/ecryptfs/messaging.c b/fs/ecryptfs/messaging.c index c22b32fc8e8..e8ba6278ad2 100644 --- a/fs/ecryptfs/messaging.c +++ b/fs/ecryptfs/messaging.c @@ -243,7 +243,8 @@ unlock: * userspace. Returns zero upon delivery to desired context element; * non-zero upon delivery failure or error. */ -int ecryptfs_process_response(struct ecryptfs_message *msg, pid_t pid, u32 seq) +int ecryptfs_process_response(struct ecryptfs_message *msg, uid_t uid, + pid_t pid, u32 seq) { struct ecryptfs_daemon_id *id; struct ecryptfs_msg_ctx *msg_ctx; @@ -268,6 +269,13 @@ int ecryptfs_process_response(struct ecryptfs_message *msg, pid_t pid, u32 seq) msg_ctx->task->euid, pid); goto wake_up; } + if (msg_ctx->task->euid != uid) { + rc = -EBADMSG; + ecryptfs_printk(KERN_WARNING, "Received message from user " + "[%d]; expected message from user [%d]\n", + uid, msg_ctx->task->euid); + goto unlock; + } if (id->pid != pid) { rc = -EBADMSG; ecryptfs_printk(KERN_ERR, "User [%d] received a " |