diff options
Diffstat (limited to 'include/linux/pid.h')
| -rw-r--r-- | include/linux/pid.h | 15 |
1 files changed, 13 insertions, 2 deletions
diff --git a/include/linux/pid.h b/include/linux/pid.h index 49f1c2f66e95..cdced84261d7 100644 --- a/include/linux/pid.h +++ b/include/linux/pid.h @@ -21,7 +21,7 @@ enum pid_type * quickly from the numeric pid value. The attached processes may be * quickly accessed by following pointers from struct pid. * - * Storing pid_t values in the kernel and refering to them later has a + * Storing pid_t values in the kernel and referring to them later has a * problem. The process originally with that pid may have exited and the * pid allocator wrapped, and another process could have come along * and been assigned that pid. @@ -117,7 +117,7 @@ extern struct pid *find_vpid(int nr); */ extern struct pid *find_get_pid(int nr); extern struct pid *find_ge_pid(int nr, struct pid_namespace *); -int next_pidmap(struct pid_namespace *pid_ns, int last); +int next_pidmap(struct pid_namespace *pid_ns, unsigned int last); extern struct pid *alloc_pid(struct pid_namespace *ns); extern void free_pid(struct pid *pid); @@ -141,6 +141,17 @@ static inline struct pid_namespace *ns_of_pid(struct pid *pid) } /* + * is_child_reaper returns true if the pid is the init process + * of the current namespace. As this one could be checked before + * pid_ns->child_reaper is assigned in copy_process, we check + * with the pid number. + */ +static inline bool is_child_reaper(struct pid *pid) +{ + return pid->numbers[pid->level].nr == 1; +} + +/* * the helpers to get the pid's id seen from different namespaces * * pid_nr() : global id, i.e. the id seen from the init namespace; |