diff options
| author | David Howells <dhowells@redhat.com> | 2009-05-08 16:55:22 +0400 |
|---|---|---|
| committer | James Morris <jmorris@namei.org> | 2009-05-11 02:15:36 +0400 |
| commit | 5e751e992f3fb08ba35e1ca8095ec8fbf9eda523 (patch) | |
| tree | 711b1b47622dc9661f1d3d9c67d55c0b21456e8c /include/linux | |
| parent | d254117099d711f215e62427f55dfb8ebd5ad011 (diff) | |
| download | linux-5e751e992f3fb08ba35e1ca8095ec8fbf9eda523.tar.xz | |
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>
Diffstat (limited to 'include/linux')
| -rw-r--r-- | include/linux/init_task.h | 4 | ||||
| -rw-r--r-- | include/linux/sched.h | 4 |
2 files changed, 5 insertions, 3 deletions
diff --git a/include/linux/init_task.h b/include/linux/init_task.h index d87247d2641f..7f54ba942429 100644 --- a/include/linux/init_task.h +++ b/include/linux/init_task.h @@ -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, \ diff --git a/include/linux/sched.h b/include/linux/sched.h index 3fa82b353c98..5932ace22400 100644 --- a/include/linux/sched.h +++ b/include/linux/sched.h @@ -1247,7 +1247,9 @@ struct task_struct { * credentials (COW) */ const struct cred *cred; /* effective (overridable) subjective task * credentials (COW) */ - struct mutex cred_exec_mutex; /* execve vs ptrace cred calculation mutex */ + struct mutex cred_guard_mutex; /* guard against foreign influences on + * credential calculations + * (notably. ptrace) */ char comm[TASK_COMM_LEN]; /* executable name excluding path - access with [gs]et_task_comm (which lock |