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- /* Copyright (C) 1993, 1994 Free Software Foundation, Inc.
- This file is part of the GNU C Library.
-
- The GNU C Library is free software; you can redistribute it and/or
- modify it under the terms of the GNU Library General Public License as
- published by the Free Software Foundation; either version 2 of the
- License, or (at your option) any later version.
-
- The GNU C Library 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
- Library General Public License for more details.
-
- You should have received a copy of the GNU Library General Public
- License along with the GNU C Library; see the file COPYING.LIB. If
- not, write to the Free Software Foundation, Inc., 675 Mass Ave,
- Cambridge, MA 02139, USA. */
-
- #ifndef _HURD_H
-
- #define _HURD_H 1
- #include <features.h>
-
-
- /* Get types, macros, constants and function declarations
- for all Mach microkernel interaction. */
- #include <mach.h>
- #include <mach/mig_errors.h>
-
- /* Get types and constants necessary for Hurd interfaces. */
- #include <hurd/hurd_types.h>
-
- /* Get MiG stub declarations for commonly used Hurd interfaces. */
- #include <hurd/auth.h>
- #include <hurd/process.h>
- #include <hurd/fs.h>
- #include <hurd/io.h>
-
- /* Get `struct hurd_port' and related definitions implementing lightweight
- user references for ports. These are used pervasively throughout the C
- library; this is here to avoid putting it in nearly every source file. */
- #include <hurd/port.h>
-
- #include <errno.h>
- #define __hurd_fail(err) (errno = (err), -1)
-
- /* Basic ports and info, initialized by startup. */
-
- extern struct hurd_port *_hurd_ports;
- extern unsigned int _hurd_nports;
- extern volatile mode_t _hurd_umask;
-
- /* Shorthand macro for referencing _hurd_ports (see <hurd/port.h>). */
-
- #define __USEPORT(which, expr) \
- HURD_PORT_USE (&_hurd_ports[INIT_PORT_##which], (expr))
-
-
- /* Base address and size of the initial stack set up by the exec server.
- If using cthreads, this stack is deallocated in startup.
- Not locked. */
-
- extern vm_address_t _hurd_stack_base;
- extern vm_size_t _hurd_stack_size;
-
- /* Initial file descriptor table we were passed at startup. If we are
- using a real dtable, these are turned into that and then cleared at
- startup. If not, these are never changed after startup. Not locked. */
-
- extern mach_port_t *_hurd_init_dtable;
- extern mach_msg_type_number_t _hurd_init_dtablesize;
-
- /* Current process IDs. */
-
- extern pid_t _hurd_pid, _hurd_ppid, _hurd_pgrp;
- extern int _hurd_orphaned;
-
- /* This variable is incremented every time the process IDs change. */
-
- unsigned int _hurd_pids_changed_stamp;
-
- /* This condition is broadcast every time the process IDs change. */
- struct condition _hurd_pids_changed_sync;
-
- /* Unix `data break', for brk and sbrk.
- If brk and sbrk are not used, this info will not be initialized or used. */
-
-
- /* Data break. This is what `sbrk (0)' returns. */
-
- extern vm_address_t _hurd_brk;
-
- /* End of allocated space. This is generally `round_page (_hurd_brk)'. */
-
- extern vm_address_t _hurd_data_end;
-
- /* This mutex locks _hurd_brk and _hurd_data_end. */
-
- extern struct mutex _hurd_brk_lock;
-
- /* Set the data break to NEWBRK; _hurd_brk_lock must
- be held, and is released on return. */
-
- extern int _hurd_set_brk (vm_address_t newbrk);
-
- #define __need_FILE
- #include <stdio.h>
-
- /* Calls to get and set basic ports. */
-
- extern error_t _hurd_ports_get (int which, mach_port_t *result);
- extern error_t _hurd_ports_set (int which, mach_port_t newport);
-
- extern process_t getproc (void);
- extern file_t getcwdir (void), getcrdir (void);
- extern auth_t getauth (void);
- extern mach_port_t getcttyid ();
- extern int setproc (process_t);
- extern int setcwdir (file_t), setcrdir (file_t);
- extern int setcttyid (mach_port_t);
-
- /* Does reauth with the proc server and fd io servers. */
- extern int __setauth (auth_t), setauth (auth_t);
-
-
- /* Split FILE into a directory and a name within the directory. Look up a
- port for the directory and store it in *DIR; store in *NAME a pointer
- into FILE where the name within directory begins. The directory lookup
- uses CRDIR for the root directory and CWDIR for the current directory.
- Returns zero on success or an error code. */
-
- extern error_t __hurd_file_name_split (file_t crdir, file_t cwdir,
- const char *file,
- file_t *dir, char **name);
- extern error_t hurd_file_name_split (file_t crdir, file_t cwdir,
- const char *file,
- file_t *dir, char **name);
-
- /* Open a port to FILE with the given FLAGS and MODE (see <fcntl.h>).
- The file lookup uses CRDIR for the root directory and CWDIR for the
- current directory. If successful, returns zero and store the port
- to FILE in *PORT; otherwise returns an error code. */
-
- extern error_t __hurd_file_name_lookup (file_t crdir, file_t cwdir,
- const char *file,
- int flags, mode_t mode,
- file_t *port);
- extern error_t hurd_file_name_lookup (file_t crdir, file_t cwdir,
- const char *filename,
- int flags, mode_t mode,
- file_t *port);
-
- /* Process the values returned by `dir_lookup' et al, and loop doing
- `dir_lookup' calls until one returns FS_RETRY_NONE. CRDIR is the
- root directory used for things like symlinks to absolute file names; the
- other arguments should be those just passed to and/or returned from
- `dir_lookup', `fsys_getroot', or `file_invoke_translator'. This
- function consumes the reference in *RESULT even if it returns an error. */
-
- extern error_t __hurd_file_name_lookup_retry (file_t crdir,
- enum retry_type doretry,
- char retryname[1024],
- int flags, mode_t mode,
- file_t *result);
- extern error_t hurd_file_name_lookup_retry (file_t crdir,
- enum retry_type doretry,
- char retryname[1024],
- int flags, mode_t mode,
- file_t *result);
-
-
- /* Split FILE into a directory and a name within the directory. The
- directory lookup uses the current root and working directory. If
- successful, stores in *NAME a pointer into FILE where the name
- within directory begins and returns a port to the directory;
- otherwise sets `errno' and returns MACH_PORT_NULL. */
-
- extern file_t __file_name_split (const char *file, char **name);
- extern file_t file_name_split (const char *file, char **name);
-
- /* Open a port to FILE with the given FLAGS and MODE (see <fcntl.h>).
- The file lookup uses the current root and working directory.
- Returns a port to the file if successful; otherwise sets `errno'
- and returns MACH_PORT_NULL. */
-
- extern file_t __file_name_lookup (const char *file, int flags, mode_t mode);
- extern file_t file_name_lookup (const char *file, int flags, mode_t mode);
-
- /* Invoke any translator set on the node FILE represents, and return in
- *TRANSLATED a port to the translated node. FLAGS are as for
- `dir_lookup' et al, but the returned port will not necessarily have
- any more access rights than FILE does. */
-
- extern error_t __hurd_invoke_translator (file_t file, int flags,
- file_t *translated);
- extern error_t hurd_invoke_translator (file_t file, int flags,
- file_t *translated);
-
-
- /* Open a file descriptor on a port. FLAGS are as for `open'; flags
- affected by io_set_openmodes are not changed by this. If successful,
- this consumes a user reference for PORT (which will be deallocated on
- close). */
-
- extern int openport (io_t port, int flags);
-
- /* Open a stream on a port. MODE is as for `fopen'.
- If successful, this consumes a user reference for PORT
- (which will be deallocated on fclose). */
-
- extern FILE *fopenport (io_t port, const char *mode);
- extern FILE *__fopenport (io_t port, const char *mode);
-
-
- /* Execute a file, replacing TASK's current program image. */
-
- extern error_t _hurd_exec (task_t task,
- file_t file,
- char *const argv[],
- char *const envp[]);
-
-
- /* Inform the proc server we have exitted with STATUS, and kill the
- task thoroughly. This function never returns, no matter what. */
-
- extern void _hurd_exit (int status) __attribute__ ((noreturn));
-
-
- /* Initialize the library data structures from the
- ints and ports passed to us by the exec server.
- Then vm_deallocate PORTARRAY and INTARRAY. */
-
- extern void _hurd_init (int flags, char **argv,
- mach_port_t *portarray, size_t portarraysize,
- int *intarray, size_t intarraysize);
-
- /* Do startup handshaking with the proc server. */
-
- extern void _hurd_proc_init (char **argv);
-
-
- /* Return the socket server for sockaddr domain DOMAIN. If DEAD is
- nonzero, remove the old cached port and always do a fresh lookup.
-
- It is assumed that a socket server will stay alive during a complex socket
- operation involving several RPCs. But a socket server may die during
- long idle periods between socket operations. Callers should first pass
- zero for DEAD; if the first socket RPC tried on the returned port fails
- with MACH_SEND_INVALID_DEST or MIG_SERVER_DIED (indicating the server
- went away), the caller should call _hurd_socket_server again with DEAD
- nonzero and retry the RPC on the new socket server port. */
-
- extern socket_t _hurd_socket_server (int domain, int dead);
-
- /* Send a `sig_post' RPC to process number PID. If PID is zero,
- send the message to all processes in the current process's process group.
- If PID is < -1, send SIG to all processes in process group - PID.
- SIG and REFPORT are passed along in the request message. */
-
- extern error_t _hurd_sig_post (pid_t pid, int sig, mach_port_t refport);
- extern error_t hurd_sig_post (pid_t pid, int sig, mach_port_t refport);
-
- /* Fetch the host privileged port and device master port from the proc
- server. They are fetched only once and then cached in the
- variables below. A special program that gets them from somewhere
- other than the proc server (such as a bootstrap filesystem) can set
- these variables to install the ports. */
-
- extern kern_return_t get_privileged_ports (host_priv_t *host_priv_ptr,
- device_t *device_master_ptr);
- extern mach_port_t _hurd_host_priv, _hurd_device_master;
-
- /* Return the PID of the task whose control port is TASK.
- On error, sets `errno' and returns -1. */
-
- extern pid_t __task2pid (task_t task), task2pid (task_t task);
-
- /* Return the task control port of process PID.
- On error, sets `errno' and returns MACH_PORT_NULL. */
-
- extern task_t __pid2task (pid_t pid), pid2task (pid_t pid);
-
-
- /* Return the io server port for file descriptor FD.
- This adds a Mach user reference to the returned port.
- On error, sets `errno' and returns MACH_PORT_NULL. */
-
- extern io_t __getdport (int fd), getdport (int fd);
-
-
- #endif /* hurd.h */
-