CRED: Inaugurate COW credentials

[linux-2.6-omap-h63xx.git] / include / linux / sched.h

diff --git a/include/linux/sched.h b/include/linux/sched.h
index 2913252989b3d30421e911abf0b23df49898b3cc..121d655e460dab5e76c9bf3bb39ac5fdff5edcec 100644 (file)
--- a/include/linux/sched.h
+++ b/include/linux/sched.h
@@ -1145,7 +1145,8 @@ struct task_struct {
        struct list_head cpu_timers[3];
 
 /* process credentials */
-       struct cred *cred;      /* actual/objective task credentials */
+       const struct cred *cred;        /* actual/objective task credentials (COW) */
+       struct mutex cred_exec_mutex;   /* execve vs ptrace cred calculation mutex */
 
        char comm[TASK_COMM_LEN]; /* executable name excluding path
                                     - access with [gs]et_task_comm (which lock
@@ -1720,7 +1721,6 @@ static inline struct user_struct *get_uid(struct user_struct *u)
        return u;
 }
 extern void free_uid(struct user_struct *);
-extern void switch_uid(struct user_struct *);
 extern void release_uids(struct user_namespace *ns);
 
 #include <asm/current.h>
@@ -1870,6 +1870,8 @@ static inline unsigned long wait_task_inactive(struct task_struct *p,
 #define for_each_process(p) \
        for (p = &init_task ; (p = next_task(p)) != &init_task ; )
 
+extern bool is_single_threaded(struct task_struct *);
+
 /*
  * Careful: do_each_thread/while_each_thread is a double loop so
  *          'break' will not work as expected - use goto instead.