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

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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>
This commit is contained in:
David Howells 2009-05-08 13:55:22 +01:00 • committed by James Morris
parent d254117099
commit 5e751e992f
6 changed files with 20 additions and 17 deletions
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4
include/linux/init_task.h
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@ -145,8 +145,8 @@ extern struct cred init_cred;
.group_leader = &tsk, \
.real_cred = &init_cred, \
.cred = &init_cred, \
.cred_exec_mutex = \
__MUTEX_INITIALIZER(tsk.cred_exec_mutex), \
.cred_guard_mutex = \
__MUTEX_INITIALIZER(tsk.cred_guard_mutex), \
.comm = "swapper", \
.thread = INIT_THREAD, \
.fs = &init_fs, \