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Diffstat (limited to 'fs/ecryptfs/miscdev.c')
-rw-r--r--fs/ecryptfs/miscdev.c68
1 files changed, 43 insertions, 25 deletions
diff --git a/fs/ecryptfs/miscdev.c b/fs/ecryptfs/miscdev.c
index 0c559731ae3..788995efd1d 100644
--- a/fs/ecryptfs/miscdev.c
+++ b/fs/ecryptfs/miscdev.c
@@ -46,7 +46,8 @@ ecryptfs_miscdev_poll(struct file *file, poll_table *pt)
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, current->euid,
+ current->nsproxy->user_ns);
BUG_ON(rc || !daemon);
mutex_lock(&daemon->mux);
mutex_unlock(&ecryptfs_daemon_hash_mux);
@@ -92,10 +93,12 @@ 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, current->euid,
+ current->nsproxy->user_ns);
if (rc || !daemon) {
rc = ecryptfs_spawn_daemon(&daemon, current->euid,
- current->pid);
+ current->nsproxy->user_ns,
+ task_pid(current));
if (rc) {
printk(KERN_ERR "%s: Error attempting to spawn daemon; "
"rc = [%d]\n", __func__, rc);
@@ -103,18 +106,18 @@ ecryptfs_miscdev_open(struct inode *inode, struct file *file)
}
}
mutex_lock(&daemon->mux);
- if (daemon->pid != current->pid) {
+ if (daemon->pid != task_pid(current)) {
rc = -EINVAL;
- printk(KERN_ERR "%s: pid [%d] has registered with euid [%d], "
- "but pid [%d] has attempted to open the handle "
+ printk(KERN_ERR "%s: pid [0x%p] has registered with euid [%d], "
+ "but pid [0x%p] has attempted to open the handle "
"instead\n", __func__, daemon->pid, daemon->euid,
- current->pid);
+ task_pid(current));
goto out_unlock_daemon;
}
if (daemon->flags & ECRYPTFS_DAEMON_MISCDEV_OPEN) {
rc = -EBUSY;
printk(KERN_ERR "%s: Miscellaneous device handle may only be "
- "opened once per daemon; pid [%d] already has this "
+ "opened once per daemon; pid [0x%p] already has this "
"handle open\n", __func__, daemon->pid);
goto out_unlock_daemon;
}
@@ -147,10 +150,11 @@ ecryptfs_miscdev_release(struct inode *inode, struct file *file)
int rc;
mutex_lock(&ecryptfs_daemon_hash_mux);
- rc = ecryptfs_find_daemon_by_euid(&daemon, current->euid);
+ rc = ecryptfs_find_daemon_by_euid(&daemon, current->euid,
+ current->nsproxy->user_ns);
BUG_ON(rc || !daemon);
mutex_lock(&daemon->mux);
- BUG_ON(daemon->pid != current->pid);
+ BUG_ON(daemon->pid != task_pid(current));
BUG_ON(!(daemon->flags & ECRYPTFS_DAEMON_MISCDEV_OPEN));
daemon->flags &= ~ECRYPTFS_DAEMON_MISCDEV_OPEN;
atomic_dec(&ecryptfs_num_miscdev_opens);
@@ -247,7 +251,8 @@ ecryptfs_miscdev_read(struct file *file, char __user *buf, size_t count,
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, current->euid,
+ current->nsproxy->user_ns);
BUG_ON(rc || !daemon);
mutex_lock(&daemon->mux);
if (daemon->flags & ECRYPTFS_DAEMON_ZOMBIE) {
@@ -285,7 +290,8 @@ check_list:
goto check_list;
}
BUG_ON(current->euid != daemon->euid);
- BUG_ON(current->pid != daemon->pid);
+ 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,
struct ecryptfs_msg_ctx, daemon_out_list);
BUG_ON(!msg_ctx);
@@ -355,15 +361,18 @@ out_unlock_daemon:
/**
* 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 uid, pid_t pid)
+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, uid, pid);
+ 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;
@@ -372,15 +381,17 @@ static int ecryptfs_miscdev_helo(uid_t uid, pid_t pid)
/**
* 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, pid_t pid)
+static int ecryptfs_miscdev_quit(uid_t euid, struct user_namespace *user_ns,
+ struct pid *pid)
{
int rc;
- rc = ecryptfs_process_quit(euid, pid);
+ rc = ecryptfs_process_quit(euid, user_ns, pid);
if (rc)
printk(KERN_WARNING
"Error processing QUIT message; rc = [%d]\n", rc);
@@ -392,13 +403,15 @@ static int ecryptfs_miscdev_quit(uid_t euid, pid_t pid)
* @data: Bytes comprising struct ecryptfs_message
* @data_size: sizeof(struct ecryptfs_message) + data len
* @euid: Effective user id of miscdevess sending the miscdev response
+ * @user_ns: The namespace in which @euid applies
* @pid: Miscdevess id of miscdevess sending the miscdev response
* @seq: Sequence number for miscdev response packet
*
* Returns zero on success; non-zero otherwise
*/
static int ecryptfs_miscdev_response(char *data, size_t data_size,
- uid_t euid, pid_t pid, u32 seq)
+ uid_t euid, struct user_namespace *user_ns,
+ struct pid *pid, u32 seq)
{
struct ecryptfs_message *msg = (struct ecryptfs_message *)data;
int rc;
@@ -410,7 +423,7 @@ static int ecryptfs_miscdev_response(char *data, size_t data_size,
rc = -EINVAL;
goto out;
}
- rc = ecryptfs_process_response(msg, euid, pid, seq);
+ rc = ecryptfs_process_response(msg, euid, user_ns, pid, seq);
if (rc)
printk(KERN_ERR
"Error processing response message; rc = [%d]\n", rc);
@@ -491,27 +504,32 @@ ecryptfs_miscdev_write(struct file *file, const char __user *buf,
}
rc = ecryptfs_miscdev_response(&data[i], packet_size,
current->euid,
- current->pid, seq);
+ current->nsproxy->user_ns,
+ task_pid(current), seq);
if (rc)
printk(KERN_WARNING "%s: Failed to deliver miscdev "
"response to requesting operation; rc = [%d]\n",
__func__, rc);
break;
case ECRYPTFS_MSG_HELO:
- rc = ecryptfs_miscdev_helo(current->euid, current->pid);
+ 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 [%d]; rc = [%d]\n", __func__,
- current->pid, rc);
+ "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->pid);
+ 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 [%d]; rc = [%d]\n", __func__,
- current->pid, rc);
+ "quit from pid [0x%p]; rc = [%d]\n", __func__,
+ task_pid(current), rc);
goto out_free;
}
break;
generated by cgit v1.2.3 (git 2.25.1) at 2024-05-18 00:16:56 +0000