path: root/hurd/process.defs

/* Definitions for process server interface
   Copyright (C) 1992, 1993 Free Software Foundation

This file is part of the GNU Hurd.

The GNU Hurd is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2, or (at your option)
any later version.

The GNU Hurd is distributed in the hope that it will be useful, 
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with the GNU Hurd; see the file COPYING.  If not, write to
the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.  */

subsystem process 24000;

#include <hurd/hurd_types.defs>

/* If any calls are added or deleted, modify process_reply.defs
   to correspond. */

#ifdef PROCESS_IMPORTS
PROCESS_IMPORTS
#endif

type reply_port_t = MACH_MSG_TYPE_MAKE_SEND_ONCE | polymorphic
	ctype: mach_port_t;

/*** Host management ***/

/* Set the hostid for the machine.  This should be unique among all
   machines.  By convention, it is the "primary" IP address of the
   machine.  */
routine proc_sethostid (
	process: process_t;
	hostid: int);

/* Get the host id.  */
routine proc_gethostid (
	process: process_t;
	out hostid: int);

/* Set the hostname for the machine.  By convention this is the DNS
   FQDN for the machine.  */
routine proc_sethostname (
	process: process_t;
	hostname: string_t);

/* Get the hostname.  */
routine proc_gethostname (
	process: process_t;
	out hostname: string_t);

/* Get the privileged host port and the device master port.  */
routine proc_getprivports (
	process: process_t;
	out host_priv: host_priv_t;
	out device_master: device_t);

/* Return all the pids of all live processes.  */
routine proc_getallpids (
	process: process_t;
	out pidarray: pidarray_t);

/* Set the "standard exec data", used by programs that want predefined
   values for exec.  */
routine proc_setexecdata (
	process: process_t;
	ports: portarray_t;
	ints: intarray_t);

/* Get the standard exec data */
routine proc_getexecdata (
	process: process_t;
	out ports: portarray_t;
	out ints: intarray_t);

/* Request notification with exec_setexecdata on NOTIFY.  */
routine proc_execdata_notify (
	process: process_t;
	notify: mach_port_send_t);


/*** Process creation and simple management.  ***/

/* There is a 1-1 relationship between tasks and processes; to create
   a new process, just create a new task and use proc_task2proc. */

/* Change the current authentication of the process.  The user should
   follow this call with a call to auth_user_authenticate.  The
   new_port passed back through the auth server will be
   MACH_PORT_NULL.  */
simpleroutine proc_reauthenticate (
	process: process_t;
	id: int);

/* Declare that a task is a child of the caller.  The task's state
   will then inherit from the caller.  This call can be made only once
   per task. */
routine proc_child (
	process: process_t;
	child: task_t);

/* Atomically change the message port of a process.  */
routine proc_setmsgport (
	process: process_t;
	newmsgport: mach_port_t;
	out oldmsgport: mach_port_move_send_t);

/* Cause a task to take over the pid and all other state from an
   existing task, and kill the old task with task_terminate.  The
   message port will be set to MACH_PORT_NULL.  This is principally
   used for doing exec's with the EXEC_NEWTASK bit set.  The request
   port assigned to NEWTASK does not change.  The new task cannot have
   had proc_child called on its behalf, it cannot have a pgrp, a session,
   a login name set with proc_setlogin, it cannot have called proc_child,
   and it cannot have a message port.  */
/* If this call is made for a process which is no longer alive or
   does not exist, then newtask will be killed (and no error
   is returned). */
routine proc_reassign (
	process: process_t;
	newtask: task_t);

/* Set the owner of the process.  The new owner must be within the
   current authentication of the caller.  */
routine proc_setowner (
	process: process_t;
	owner: uid_t);

/* Get the process ID and the parent process ID, also find out if we
   are orphaned.  */
routine proc_getpids (
	process: process_t;
	out pid: pid_t;
	out ppid: pid_t;
	out orphaned: int);

routine proc_setprocargs (
	process: process_t;
	argv: int;
	envp: int);

/* Fetch the message port of a process */
/* INTR */
routine proc_getmsgport (
	process: process_t;
	pid: pid_t;
	out msgport: mach_port_t);

/* Wait for a child process to exit.  If pid is zero, it waits for any
   child.  If pid is negative, it waits for any process in the
   specified process group.  If pid is positive, it waits for the
   specified process.  The exit status and resource usage of the
   process are returned in status and rusage respectively.  */
/* INTR */
routine proc_wait (
	process: process_t;
	sreplyport reply_port: reply_port_t;
	pid: pid_t;
	options: int;
	out status: int;
	out rusage: rusage_t;
	out pid_status: pid_t);

/* Have the process server stop all threads except contthread.  */
routine proc_dostop (
	process: process_t;
	contthread: thread_t);

/* Take over exception messages received on MSGPORT.  Any exception
   messages received will be forwarded to FORWARDPORT.  In addition,
   the thread causing the exception will be aborted (with thread_abort)
   and have its state adjusted (as by thread_set_state).  */
routine proc_handle_exceptions (
	process: process_t;
	msgport: mach_port_move_receive_t;
	forwardport: mach_port_send_t;
	flavor: int;
	new_state: thread_state_t);



/*** Mark bits.  Some of these (exec, traced, eg) modify small pieces 
   of the proc server's behavior; others are purely informational. ***/

/* Mark the process as stopped on a signal. */
routine proc_mark_stop (
	process: process_t;
	signo: int);

/* Mark the process as continued after a stop.  */
routine proc_mark_cont (
	process: process_t);

/* Tell the process server that the process is going away.  If it dies
   without calling this, it will look to the parent like the process
   died with SIGKILL.  This call allows for a cleaner exit.  */
routine proc_mark_exit (
	process: process_t;
	status: int);

/* Inform the process server that the process has completed an exec.  */
routine proc_mark_exec (
	process: process_t);

/* Inform the process server that the process has asked to be traced.
   The only result of this is to change the behavior of wait by the 
   parent slightly.  */
routine proc_mark_traced (
	process: process_t);

/* Inform the process server whether SIGCHLD should be sent for stopped 
   child processes.  */
routine proc_mod_stopchild (
	process: process_t;
	doit: int);


/*** Miscellaneous process information queries. ***/

routine proc_pid2task (
	process: process_t;
	pid: pid_t;
	out task: task_t);

routine proc_task2pid (
	process: process_t;
	task: task_t;
	out pid: pid_t);

/* Return the procserver port for the specified task.  */
routine proc_task2proc (
	process: process_t;
	task: task_t;
	out proc: mach_port_make_send_t);

routine proc_proc2task (
	process: process_t;
	out task: task_t);

routine proc_pid2proc (
	process: process_t;
	pid: pid_t;
	out proc: mach_port_make_send_t);

routine proc_getprocinfo (
	process: process_t;
	which: pid_t;
	out procinfo: procinfo_t);

routine proc_getprocargs (
	process: process_t;
	which: pid_t;
	out procargs: data_t);

routine proc_getprocenv (
	process: process_t;
	which: pid_t;
	out procenv: data_t);

/* These next two should not actually be used; they are here 
   for "historic reasons."  You are not expected to understand this. */
routine proc_setlogin (
	process: process_t;
	logname: string_t);

routine proc_getlogin (
	process: process_t;
	out logname: string_t);



/*** Sessions and process groups.  ***/

/* Create a new session.  The process's pgrp is set to its pid, and
   becomes the session leader.  */
routine proc_setsid (
	process: process_t);

/* Return the pid of a process's session leader.  */
routine proc_getsid (
	process: process_t;
	pid: pid_t;
	out sid: pid_t);

/* Get the pgids of all the members of a session.  */
routine proc_getsessionpids (
	process: process_t;
	sid: pid_t;
	out pgidset: pidarray_t);

/* Return a "session ID" port for the session of the caller.
   This port is generally only available to members of the session.
   (It has no listener, but is useful for identification purposes.)  */
routine proc_getsidport (
	process: process_t;
	out sessport: mach_port_t);

/* Set the process group of a process.  */
routine proc_setpgrp (
	process: process_t;
	pid: pid_t;
	pgrp: pid_t);

/* Get the process group of a process.  */
routine proc_getpgrp (
	process: process_t;
	pid: pid_t;
	out pgrp: pid_t);

/* Get the pids of all the members of a pgrp.  */
routine proc_getpgrppids (
	process: process_t;
	pgrp: pid_t;
	out pidset: pidarray_t);


/*** Process collections ***/

/* Create a new process collection.  Process collections are
   completely orthogonal to the Posix concepts of process group and
   session.  Process collections may be inheritable, which means that
   child processes of members automatically become members themselves.
   */
routine proc_make_collection (
	process: process_t;
	inheritable: int;
	out proccoll: proccoll_t);

/* Add the caller to the indicated process collection.  */
routine proc_add_collection (
	process: process_t;
	proccoll: proccoll_t);

/* Remove the process from the indicated process collection.  */
routine proc_remove_collection (
	process: process_t;
	proccoll: proccoll_t);

/* Remove the process from all process collections.  */
routine proc_remove_all_collections (
	process: process_t);

/* Return all the process collections of which we are a member.  */
routine proc_get_collections (
	process: process_t;
	collections: portarray_t);

/* Return all the pids of processes in a collection.  */
routine proc_collection_members (
	process: process_t;
	proccoll: proccoll_t;
	pids: intarray_t);

/* Return a pseudo-collection port for a process group.  This is only
   useful as an argument to proc_get_collports.  */
routine proc_pgrp_pcoll (
	process: process_t;
	pgrp: pid_t;
	out pcoll: proccoll_t);

/* Return a pseudo-collection port for a session.  This is only useful
   as an argument to proc_get_collports.  */
routine proc_session_pcoll (
	process: process_t;
	session: pid_t;
	out pcoll: proccoll_t);

/* Return send rights to all the message ports of the members of the
   collection or pseudo-collection.  These should not be saved for a
   period of time, because processes are free to change their message
   ports.  */
/* INTR */
routine proc_get_collports (
	process: process_t;
	proccoll: proccoll_t;
	out pids: pidarray_t;
	out msgports: portarray_t);