204 	struct pid *pgrp;  in SYSCALL_DEFINE3()
274 	struct pid *pgrp;  in SYSCALL_DEFINE2()
912 	int pid;  in SYSCALL_DEFINE0()  local
915 	pid = task_tgid_vnr(rcu_dereference(current->real_parent));  in SYSCALL_DEFINE0()
918 	return pid;  in SYSCALL_DEFINE0()
1008 SYSCALL_DEFINE2(setpgid, pid_t, pid, pid_t, pgid)  in SYSCALL_DEFINE2()  argument
1012 	struct pid *pgrp;  in SYSCALL_DEFINE2()
1015 	if (!pid)  in SYSCALL_DEFINE2()
1016 		pid = task_pid_vnr(group_leader);  in SYSCALL_DEFINE2()
1018 		pgid = pid;  in SYSCALL_DEFINE2()
1029 	p = find_task_by_vpid(pid);  in SYSCALL_DEFINE2()
1055 	if (pgid != pid) {  in SYSCALL_DEFINE2()
1079 static int do_getpgid(pid_t pid)  in do_getpgid()  argument
1082 	struct pid *grp;  in do_getpgid()
1086 	if (!pid)  in do_getpgid()
1090 		p = find_task_by_vpid(pid);  in do_getpgid()
1107 SYSCALL_DEFINE1(getpgid, pid_t, pid)  in SYSCALL_DEFINE1()  argument
1109 	return do_getpgid(pid);  in SYSCALL_DEFINE1()
1121 SYSCALL_DEFINE1(getsid, pid_t, pid)  in SYSCALL_DEFINE1()  argument
1124 	struct pid *sid;  in SYSCALL_DEFINE1()
1128 	if (!pid)  in SYSCALL_DEFINE1()
1132 		p = find_task_by_vpid(pid);  in SYSCALL_DEFINE1()
1149 static void set_special_pids(struct pid *pid)  in set_special_pids()  argument
1153 	if (task_session(curr) != pid)  in set_special_pids()
1154 		change_pid(curr, PIDTYPE_SID, pid);  in set_special_pids()
1156 	if (task_pgrp(curr) != pid)  in set_special_pids()
1157 		change_pid(curr, PIDTYPE_PGID, pid);  in set_special_pids()
1163 	struct pid *sid = task_pid(group_leader);  in ksys_setsid()
1608 SYSCALL_DEFINE4(prlimit64, pid_t, pid, unsigned int, resource,  in SYSCALL_DEFINE4()  argument
1629 	tsk = pid ? find_task_by_vpid(pid) : current;  in SYSCALL_DEFINE4()