{
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,
- current->nsproxy->user_ns);
+ rc = ecryptfs_find_daemon_by_euid(&daemon, euid, current_user_ns());
BUG_ON(rc || !daemon);
mutex_lock(&daemon->mux);
mutex_unlock(&ecryptfs_daemon_hash_mux);
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);
"count; rc = [%d]\n", __func__, rc);
goto out_unlock_daemon_list;
}
- rc = ecryptfs_find_daemon_by_euid(&daemon, current->euid,
- current->nsproxy->user_ns);
+ rc = ecryptfs_find_daemon_by_euid(&daemon, euid, current_user_ns());
if (rc || !daemon) {
- rc = ecryptfs_spawn_daemon(&daemon, current->euid,
- current->nsproxy->user_ns,
+ rc = ecryptfs_spawn_daemon(&daemon, euid, current_user_ns(),
task_pid(current));
if (rc) {
printk(KERN_ERR "%s: Error attempting to spawn daemon; "
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,
- current->nsproxy->user_ns);
+ rc = ecryptfs_find_daemon_by_euid(&daemon, euid, current_user_ns());
BUG_ON(rc || !daemon);
mutex_lock(&daemon->mux);
BUG_ON(daemon->pid != task_pid(current));
int rc = 0;
mutex_lock(&msg_ctx->mux);
- if (data) {
- msg_ctx->msg = kmalloc((sizeof(*msg_ctx->msg) + data_size),
- GFP_KERNEL);
- if (!msg_ctx->msg) {
- rc = -ENOMEM;
- printk(KERN_ERR "%s: Out of memory whilst attempting "
- "to kmalloc(%Zd, GFP_KERNEL)\n", __func__,
- (sizeof(*msg_ctx->msg) + data_size));
- goto out_unlock;
- }
- } else
- msg_ctx->msg = NULL;
+ msg_ctx->msg = kmalloc((sizeof(*msg_ctx->msg) + data_size),
+ GFP_KERNEL);
+ if (!msg_ctx->msg) {
+ rc = -ENOMEM;
+ printk(KERN_ERR "%s: Out of memory whilst attempting "
+ "to kmalloc(%zd, GFP_KERNEL)\n", __func__,
+ (sizeof(*msg_ctx->msg) + data_size));
+ goto out_unlock;
+ }
msg_ctx->msg->index = msg_ctx->index;
msg_ctx->msg->data_len = data_size;
msg_ctx->type = msg_type;
- if (data) {
- memcpy(msg_ctx->msg->data, data, data_size);
- msg_ctx->msg_size = (sizeof(*msg_ctx->msg) + data_size);
- } else
- msg_ctx->msg_size = 0;
+ memcpy(msg_ctx->msg->data, data, data_size);
+ msg_ctx->msg_size = (sizeof(*msg_ctx->msg) + data_size);
mutex_lock(&daemon->mux);
list_add_tail(&msg_ctx->daemon_out_list, &daemon->msg_ctx_out_queue);
daemon->num_queued_msg_ctx++;
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,
- current->nsproxy->user_ns);
+ rc = ecryptfs_find_daemon_by_euid(&daemon, euid, current_user_ns());
BUG_ON(rc || !daemon);
mutex_lock(&daemon->mux);
if (daemon->flags & ECRYPTFS_DAEMON_ZOMBIE) {
* message from the queue; try again */
goto check_list;
}
- BUG_ON(current->euid != daemon->euid);
- BUG_ON(current->nsproxy->user_ns != daemon->user_ns);
+ BUG_ON(euid != daemon->euid);
+ BUG_ON(current_user_ns() != daemon->user_ns);
BUG_ON(task_pid(current) != daemon->pid);
msg_ctx = list_first_entry(&daemon->msg_ctx_out_queue,
struct ecryptfs_msg_ctx, daemon_out_list);
if (count < total_length) {
rc = 0;
printk(KERN_WARNING "%s: Only given user buffer of "
- "size [%Zd], but we need [%Zd] to read the "
+ "size [%zd], but we need [%zd] to read the "
"pending message\n", __func__, count, total_length);
goto out_unlock_msg_ctx;
}
}
/**
- * ecryptfs_miscdev_helo
- * @euid: effective user id of miscdevess sending helo packet
- * @user_ns: The namespace in which @euid applies
- * @pid: miscdevess id of miscdevess sending helo packet
- *
- * Returns zero on success; non-zero otherwise
- */
-static int ecryptfs_miscdev_helo(uid_t euid, struct user_namespace *user_ns,
- struct pid *pid)
-{
- int rc;
-
- rc = ecryptfs_process_helo(ECRYPTFS_TRANSPORT_MISCDEV, euid, user_ns,
- pid);
- if (rc)
- printk(KERN_WARNING "Error processing HELO; rc = [%d]\n", rc);
- return rc;
-}
-
-/**
- * ecryptfs_miscdev_quit
- * @euid: effective user id of miscdevess sending quit packet
- * @user_ns: The namespace in which @euid applies
- * @pid: miscdevess id of miscdevess sending quit packet
- *
- * Returns zero on success; non-zero otherwise
- */
-static int ecryptfs_miscdev_quit(uid_t euid, struct user_namespace *user_ns,
- struct pid *pid)
-{
- int rc;
-
- rc = ecryptfs_process_quit(euid, user_ns, pid);
- if (rc)
- printk(KERN_WARNING
- "Error processing QUIT message; rc = [%d]\n", rc);
- return rc;
-}
-
-/**
* ecryptfs_miscdev_response - miscdevess response to message previously sent to daemon
* @data: Bytes comprising struct ecryptfs_message
* @data_size: sizeof(struct ecryptfs_message) + data len
if ((sizeof(*msg) + msg->data_len) != data_size) {
printk(KERN_WARNING "%s: (sizeof(*msg) + msg->data_len) = "
- "[%Zd]; data_size = [%Zd]. Invalid packet.\n", __func__,
+ "[%zd]; data_size = [%zd]. Invalid packet.\n", __func__,
(sizeof(*msg) + msg->data_len), data_size);
rc = -EINVAL;
goto out;
size_t packet_size, packet_size_length, i;
ssize_t sz = 0;
char *data;
+ uid_t euid = current_euid();
int rc;
if (count == 0)
goto out;
- data = kmalloc(count, GFP_KERNEL);
- if (!data) {
- printk(KERN_ERR "%s: Out of memory whilst attempting to "
- "kmalloc([%Zd], GFP_KERNEL)\n", __func__, count);
+
+ data = memdup_user(buf, count);
+ if (IS_ERR(data)) {
+ printk(KERN_ERR "%s: memdup_user returned error [%ld]\n",
+ __func__, PTR_ERR(data));
goto out;
}
- rc = copy_from_user(data, buf, count);
- if (rc) {
- printk(KERN_ERR "%s: copy_from_user returned error [%d]\n",
- __func__, rc);
- goto out_free;
- }
sz = count;
i = 0;
switch (data[i++]) {
case ECRYPTFS_MSG_RESPONSE:
if (count < (1 + 4 + 1 + sizeof(struct ecryptfs_message))) {
printk(KERN_WARNING "%s: Minimum acceptable packet "
- "size is [%Zd], but amount of data written is "
- "only [%Zd]. Discarding response packet.\n",
+ "size is [%zd], but amount of data written is "
+ "only [%zd]. Discarding response packet.\n",
__func__,
(1 + 4 + 1 + sizeof(struct ecryptfs_message)),
count);
}
i += packet_size_length;
if ((1 + 4 + packet_size_length + packet_size) != count) {
- printk(KERN_WARNING "%s: (1 + packet_size_length([%Zd])"
- " + packet_size([%Zd]))([%Zd]) != "
- "count([%Zd]). Invalid packet format.\n",
+ printk(KERN_WARNING "%s: (1 + packet_size_length([%zd])"
+ " + packet_size([%zd]))([%zd]) != "
+ "count([%zd]). Invalid packet format.\n",
__func__, packet_size_length, packet_size,
(1 + packet_size_length + packet_size), count);
goto out_free;
}
rc = ecryptfs_miscdev_response(&data[i], packet_size,
- current->euid,
- current->nsproxy->user_ns,
+ euid, current_user_ns(),
task_pid(current), seq);
if (rc)
printk(KERN_WARNING "%s: Failed to deliver miscdev "
__func__, rc);
break;
case ECRYPTFS_MSG_HELO:
- rc = ecryptfs_miscdev_helo(current->euid,
- current->nsproxy->user_ns,
- task_pid(current));
- if (rc) {
- printk(KERN_ERR "%s: Error attempting to process "
- "helo from pid [0x%p]; rc = [%d]\n", __func__,
- task_pid(current), rc);
- goto out_free;
- }
- break;
case ECRYPTFS_MSG_QUIT:
- rc = ecryptfs_miscdev_quit(current->euid,
- current->nsproxy->user_ns,
- task_pid(current));
- if (rc) {
- printk(KERN_ERR "%s: Error attempting to process "
- "quit from pid [0x%p]; rc = [%d]\n", __func__,
- task_pid(current), rc);
- goto out_free;
- }
break;
default:
ecryptfs_printk(KERN_WARNING, "Dropping miscdev "
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff