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authorTyler Hicks <tyhicks@linux.vnet.ibm.com>2008-07-24 06:30:04 +0200
committerLinus Torvalds <torvalds@linux-foundation.org>2008-07-24 19:47:31 +0200
commit6c4c17b073cd4a5a61bc04329561632870bb21fc (patch)
tree22fea1e80df5665061f1cf2953c69a00dc097e9b /fs/ecryptfs/miscdev.c
parenteCryptfs: Privileged kthread for lower file opens (diff)
downloadlinux-6c4c17b073cd4a5a61bc04329561632870bb21fc.tar.xz
linux-6c4c17b073cd4a5a61bc04329561632870bb21fc.zip
ecryptfs: discard ecryptfsd registration messages in miscdev
The userspace eCryptfs daemon sends HELO and QUIT messages to the kernel for per-user daemon (un)registration. These messages are required when netlink is used as the transport, but (un)registration is handled by opening and closing the device file when miscdev is the transport. These messages should be discarded in the miscdev transport so that a daemon isn't registered twice. Signed-off-by: Tyler Hicks <tyhicks@linux.vnet.ibm.com> Cc: Michael Halcrow <mhalcrow@us.ibm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'fs/ecryptfs/miscdev.c')
-rw-r--r--fs/ecryptfs/miscdev.c59
1 files changed, 0 insertions, 59 deletions
diff --git a/fs/ecryptfs/miscdev.c b/fs/ecryptfs/miscdev.c
index 09a4522f65e6..b484792a0996 100644
--- a/fs/ecryptfs/miscdev.c
+++ b/fs/ecryptfs/miscdev.c
@@ -358,46 +358,6 @@ 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 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
@@ -512,26 +472,7 @@ ecryptfs_miscdev_write(struct file *file, const char __user *buf,
__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 "