---

yaml --- r: 120677 b: refs/heads/master c: 4eea035 h: refs/heads/master i: 120675: 77b7570 v: v3
git-mirror · Nov 13, 2008 · c3821b0 · c3821b0
1 parent 2707f49
commit c3821b0
Show file tree

Hide file tree

Showing 3 changed files with 23 additions and 17 deletions.
diff --git a/[refs] b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: ec4c2aacd16672febca053109eb9ddf672108ca1
+refs/heads/master: 4eea03539d9a8e3f5056aed690efde1f75535e7b
diff --git a/trunk/fs/ecryptfs/messaging.c b/trunk/fs/ecryptfs/messaging.c
@@ -361,6 +361,7 @@ int ecryptfs_process_response(struct ecryptfs_message *msg, uid_t euid,
 	size_t msg_size;
 	struct nsproxy *nsproxy;
 	struct user_namespace *current_user_ns;
+	uid_t ctx_euid;
 	int rc;
 
 	if (msg->index >= ecryptfs_message_buf_len) {
@@ -385,23 +386,23 @@ int ecryptfs_process_response(struct ecryptfs_message *msg, uid_t euid,
 		goto wake_up;
 	}
 	current_user_ns = nsproxy->user_ns;
-	rc = ecryptfs_find_daemon_by_euid(&daemon, msg_ctx->task->euid,
-					  current_user_ns);
+	ctx_euid = task_euid(msg_ctx->task);
+	rc = ecryptfs_find_daemon_by_euid(&daemon, ctx_euid, current_user_ns);
 	rcu_read_unlock();
 	mutex_unlock(&ecryptfs_daemon_hash_mux);
 	if (rc) {
 		rc = -EBADMSG;
 		printk(KERN_WARNING "%s: User [%d] received a "
 		       "message response from process [0x%p] but does "
 		       "not have a registered daemon\n", __func__,
-		       msg_ctx->task->euid, pid);
+		       ctx_euid, pid);
 		goto wake_up;
 	}
-	if (msg_ctx->task->euid != euid) {
+	if (ctx_euid != euid) {
 		rc = -EBADMSG;
 		printk(KERN_WARNING "%s: Received message from user "
 		       "[%d]; expected message from user [%d]\n", __func__,
-		       euid, msg_ctx->task->euid);
+		       euid, ctx_euid);
 		goto unlock;
 	}
 	if (current_user_ns != user_ns) {
@@ -415,7 +416,7 @@ int ecryptfs_process_response(struct ecryptfs_message *msg, uid_t euid,
 		rc = -EBADMSG;
 		printk(KERN_ERR "%s: User [%d] sent a message response "
 		       "from an unrecognized process [0x%p]\n",
-		       __func__, msg_ctx->task->euid, pid);
+		       __func__, ctx_euid, pid);
 		goto unlock;
 	}
 	if (msg_ctx->state != ECRYPTFS_MSG_CTX_STATE_PENDING) {
@@ -464,14 +465,15 @@ ecryptfs_send_message_locked(char *data, int data_len, u8 msg_type,
 			     struct ecryptfs_msg_ctx **msg_ctx)
 {
 	struct ecryptfs_daemon *daemon;
+	uid_t euid = current_euid();
 	int rc;
 
-	rc = ecryptfs_find_daemon_by_euid(&daemon, current->euid,
+	rc = ecryptfs_find_daemon_by_euid(&daemon, euid,
 					  current->nsproxy->user_ns);
 	if (rc || !daemon) {
 		rc = -ENOTCONN;
 		printk(KERN_ERR "%s: User [%d] does not have a daemon "
-		       "registered\n", __func__, current->euid);
+		       "registered\n", __func__, euid);
 		goto out;
 	}
 	mutex_lock(&ecryptfs_msg_ctx_lists_mux);

diff --git a/trunk/fs/ecryptfs/miscdev.c b/trunk/fs/ecryptfs/miscdev.c
@@ -42,11 +42,12 @@ ecryptfs_miscdev_poll(struct file *file, poll_table *pt)
 {
 	struct ecryptfs_daemon *daemon;
 	unsigned int mask = 0;
+	uid_t euid = current_euid();
 	int rc;
 
 	mutex_lock(&ecryptfs_daemon_hash_mux);
 	/* TODO: Just use file->private_data? */
-	rc = ecryptfs_find_daemon_by_euid(&daemon, current->euid,
+	rc = ecryptfs_find_daemon_by_euid(&daemon, euid,
 					  current->nsproxy->user_ns);
 	BUG_ON(rc || !daemon);
 	mutex_lock(&daemon->mux);
@@ -83,6 +84,7 @@ static int
 ecryptfs_miscdev_open(struct inode *inode, struct file *file)
 {
 	struct ecryptfs_daemon *daemon = NULL;
+	uid_t euid = current_euid();
 	int rc;
 
 	mutex_lock(&ecryptfs_daemon_hash_mux);
@@ -93,10 +95,10 @@ ecryptfs_miscdev_open(struct inode *inode, struct file *file)
 		       "count; rc = [%d]\n", __func__, rc);
 		goto out_unlock_daemon_list;
 	}
-	rc = ecryptfs_find_daemon_by_euid(&daemon, current->euid,
+	rc = ecryptfs_find_daemon_by_euid(&daemon, euid,
 					  current->nsproxy->user_ns);
 	if (rc || !daemon) {
-		rc = ecryptfs_spawn_daemon(&daemon, current->euid,
+		rc = ecryptfs_spawn_daemon(&daemon, euid,
 					   current->nsproxy->user_ns,
 					   task_pid(current));
 		if (rc) {
@@ -147,10 +149,11 @@ static int
 ecryptfs_miscdev_release(struct inode *inode, struct file *file)
 {
 	struct ecryptfs_daemon *daemon = NULL;
+	uid_t euid = current_euid();
 	int rc;
 
 	mutex_lock(&ecryptfs_daemon_hash_mux);
-	rc = ecryptfs_find_daemon_by_euid(&daemon, current->euid,
+	rc = ecryptfs_find_daemon_by_euid(&daemon, euid,
 					  current->nsproxy->user_ns);
 	BUG_ON(rc || !daemon);
 	mutex_lock(&daemon->mux);
@@ -246,11 +249,12 @@ ecryptfs_miscdev_read(struct file *file, char __user *buf, size_t count,
 	char packet_length[3];
 	size_t i;
 	size_t total_length;
+	uid_t euid = current_euid();
 	int rc;
 
 	mutex_lock(&ecryptfs_daemon_hash_mux);
 	/* TODO: Just use file->private_data? */
-	rc = ecryptfs_find_daemon_by_euid(&daemon, current->euid,
+	rc = ecryptfs_find_daemon_by_euid(&daemon, euid,
 					  current->nsproxy->user_ns);
 	BUG_ON(rc || !daemon);
 	mutex_lock(&daemon->mux);
@@ -290,7 +294,7 @@ ecryptfs_miscdev_read(struct file *file, char __user *buf, size_t count,
 		 * message from the queue; try again */
 		goto check_list;
 	}
-	BUG_ON(current->euid != daemon->euid);
+	BUG_ON(euid != daemon->euid);
 	BUG_ON(current->nsproxy->user_ns != daemon->user_ns);
 	BUG_ON(task_pid(current) != daemon->pid);
 	msg_ctx = list_first_entry(&daemon->msg_ctx_out_queue,
@@ -414,6 +418,7 @@ ecryptfs_miscdev_write(struct file *file, const char __user *buf,
 	size_t packet_size, packet_size_length, i;
 	ssize_t sz = 0;
 	char *data;
+	uid_t euid = current_euid();
 	int rc;
 
 	if (count == 0)
@@ -463,8 +468,7 @@ ecryptfs_miscdev_write(struct file *file, const char __user *buf,
 			goto out_free;
 		}
 		rc = ecryptfs_miscdev_response(&data[i], packet_size,
-					       current->euid,
-					       current->nsproxy->user_ns,
+					       euid, current->nsproxy->user_ns,
 					       task_pid(current), seq);
 		if (rc)
 			printk(KERN_WARNING "%s: Failed to deliver miscdev "