224 	struct pid *pgrp;  in SYSCALL_DEFINE3()
294 	struct pid *pgrp;  in SYSCALL_DEFINE2()
977 	int pid;  in SYSCALL_DEFINE0()  local
980 	pid = task_tgid_vnr(rcu_dereference(current->real_parent));  in SYSCALL_DEFINE0()
983 	return pid;  in SYSCALL_DEFINE0()
1073 SYSCALL_DEFINE2(setpgid, pid_t, pid, pid_t, pgid)  in SYSCALL_DEFINE2()  argument
1077 	struct pid *pgrp;  in SYSCALL_DEFINE2()
1080 	if (!pid)  in SYSCALL_DEFINE2()
1081 		pid = task_pid_vnr(group_leader);  in SYSCALL_DEFINE2()
1083 		pgid = pid;  in SYSCALL_DEFINE2()
1094 	p = find_task_by_vpid(pid);  in SYSCALL_DEFINE2()
1120 	if (pgid != pid) {  in SYSCALL_DEFINE2()
1144 static int do_getpgid(pid_t pid)  in do_getpgid()  argument
1147 	struct pid *grp;  in do_getpgid()
1151 	if (!pid)  in do_getpgid()
1155 		p = find_task_by_vpid(pid);  in do_getpgid()
1172 SYSCALL_DEFINE1(getpgid, pid_t, pid)  in SYSCALL_DEFINE1()  argument
1174 	return do_getpgid(pid);  in SYSCALL_DEFINE1()
1186 SYSCALL_DEFINE1(getsid, pid_t, pid)  in SYSCALL_DEFINE1()  argument
1189 	struct pid *sid;  in SYSCALL_DEFINE1()
1193 	if (!pid)  in SYSCALL_DEFINE1()
1197 		p = find_task_by_vpid(pid);  in SYSCALL_DEFINE1()
1214 static void set_special_pids(struct pid *pid)  in set_special_pids()  argument
1218 	if (task_session(curr) != pid)  in set_special_pids()
1219 		change_pid(curr, PIDTYPE_SID, pid);  in set_special_pids()
1221 	if (task_pgrp(curr) != pid)  in set_special_pids()
1222 		change_pid(curr, PIDTYPE_PGID, pid);  in set_special_pids()
1228 	struct pid *sid = task_pid(group_leader);  in ksys_setsid()
1684 SYSCALL_DEFINE4(prlimit64, pid_t, pid, unsigned int, resource,  in SYSCALL_DEFINE4()  argument
1705 	tsk = pid ? find_task_by_vpid(pid) : current;  in SYSCALL_DEFINE4()