commit 5e751e992f3fb08ba35e1ca8095ec8fbf9eda523
author David Howells <dhowells@redhat.com> Fri May 08 13:55:22 2009 +0100
committer James Morris <jmorris@namei.org> Mon May 11 08:15:36 2009 +1000
tree 711b1b47622dc9661f1d3d9c67d55c0b21456e8c
parent d254117099d711f215e62427f55dfb8ebd5ad011

CRED: Rename cred_exec_mutex to reflect that it's a guard against ptrace

Rename cred_exec_mutex to reflect that it's a guard against foreign
intervention on a process's credential state, such as is made by ptrace().  The
attachment of a debugger to a process affects execve()'s calculation of the new
credential state - _and_ also setprocattr()'s calculation of that state.

Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: James Morris <jmorris@namei.org>

fs/compat.c

diff --git a/fs/compat.c b/fs/compat.c
index 681ed81..bb2a9b2 100644
--- a/fs/compat.c
+++ b/fs/compat.c
@@ -1488,7 +1488,7 @@
 	if (!bprm)
 		goto out_files;
 
-	retval = mutex_lock_interruptible(&current->cred_exec_mutex);
+	retval = mutex_lock_interruptible(&current->cred_guard_mutex);
 	if (retval < 0)
 		goto out_free;
 	current->in_execve = 1;
@@ -1550,7 +1550,7 @@
 	/* execve succeeded */
 	current->fs->in_exec = 0;
 	current->in_execve = 0;
-	mutex_unlock(&current->cred_exec_mutex);
+	mutex_unlock(&current->cred_guard_mutex);
 	acct_update_integrals(current);
 	free_bprm(bprm);
 	if (displaced)
@@ -1573,7 +1573,7 @@
 
 out_unlock:
 	current->in_execve = 0;
-	mutex_unlock(&current->cred_exec_mutex);
+	mutex_unlock(&current->cred_guard_mutex);
 
 out_free:
 	free_bprm(bprm);