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- /* System-dependent prototypes
- Copyright (C) 1985, 1993, 1994 Free Software Foundation, Inc.
-
- This file is part of XEmacs.
-
- XEmacs 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.
-
- XEmacs 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 XEmacs; see the file COPYING. If not, write to the Free
- Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
-
- /* Synched up with: FSF 19.28. Split out of sysdep.c/emacs.c. */
-
- #ifndef _XEMACS_SYSDEP_H_
- #define _XEMACS_SYSDEP_H_
-
- #include <setjmp.h>
-
- #if !defined(VMS) || !defined(LINK_CRTL_SHARE) || !defined(SHAREABLE_LIB_BUG)
- extern char **environ;
- #else
- extern noshare char **environ;
- #endif /* VMS sharable environ bug */
-
- struct emacs_tty;
- extern int emacs_get_tty (int fd, struct emacs_tty *settings);
- extern int emacs_set_tty (int fd, struct emacs_tty *settings, int waitp);
-
- extern void stuff_char (struct device *d, int c);
-
- extern void init_baud_rate (struct device *d);
-
- extern void set_exclusive_use (int fd);
-
- extern void set_descriptor_non_blocking (int fd);
-
- extern void wait_without_blocking (void);
-
- /* Wait for subprocess with process id `pid' to terminate and
- make sure it will get eliminated (not remain forever as a zombie) */
- extern void wait_for_termination (int pid);
-
- /* flush any pending output
- * (may flush input as well; it does not matter the way we use it)
- */
- extern void flush_pending_output (int channel);
-
- extern void child_setup_tty (int out);
-
- /* Suspend the Emacs process; give terminal to its superior. */
- extern void sys_suspend (void);
-
- extern void request_sigio (void);
- extern void unrequest_sigio (void);
-
- extern void stop_interrupts (void);
- extern void start_interrupts (void);
- extern void slow_down_interrupts (void);
- extern void speed_up_interrupts (void);
-
- /* Used so that signals can break out of system calls that aren't
- naturally interruptible. */
-
- jmp_buf break_system_call_jump;
- int can_break_system_calls;
-
- extern int sys_write_1 (int fildes, CONST void *buf, unsigned int nbyte,
- int allow_quit);
- extern int sys_read_1 (int fildes, void *buf, unsigned int nbyte,
- int allow_quit);
-
- /* Call these functions if you want to change some terminal parameter --
- reset the device, change the parameter, and init it again. */
- extern void init_one_device (struct device *d);
- extern void reset_one_device (struct device *d);
-
- /* Prepare all terminals for exiting Emacs; move the cursor to the
- bottom of the frame, turn off special modes, etc. Called at exit.
- This calls reset_one_device() on all devices and does some other
- stuff (e.g. fix the foreground pgroup). */
-
- extern void reset_all_devices (void);
-
- /* Call these functions if you are going to temporarily exit back to
- the shell (e.g. when suspending). This calls reset_one_device()
- on the initial device and does some other stuff (e.g. fix the
- foreground pgroup). */
-
- extern void reset_initial_device (void);
- extern void reinit_initial_device (void);
-
- /* We muck around with our process group. This function needs
- to be called at startup. The rest of the mucking is done as
- part of the functions reset_all_devices(), reset_initial_device(),
- and reinit_initial_device(). */
-
- extern void init_process_group (void);
- extern void munge_tty_process_group (void);
- extern void unmunge_tty_process_group (void);
-
- extern void disconnect_controlling_terminal (void);
-
- /* Return nonzero if safe to use tabs in output.
- At the time this is called, init_sys_modes has not been done yet. */
- extern int tabs_safe_p (struct device *d);
-
- /* Get terminal size from system.
- If zero or a negative number is stored, the value is not valid. */
- extern void get_tty_device_size (struct device *d, int *widthp, int *heightp);
- /* Set the logical window size associated with descriptor FD */
- extern int set_window_size (int fd, int height, int width);
-
- /* Set up the proper status flags for use of a pty. */
- extern void setup_pty (int fd);
-
- /* Return the address of the start of the text segment prior to unexec. */
- extern char *start_of_text (void);
- /* Return the address of the start of the data segment prior to unexec. */
- extern void *start_of_data (void);
- /* Return the address of the end of the text segment prior to unexec. */
- extern char *end_of_text (void);
- /* Return the address of the end of the data segment prior to unexec. */
- extern char *end_of_data (void);
-
-
- /* Get_system_name returns as its value a string for system-name to return. */
- extern void init_system_name (void);
-
- #ifndef HAVE_GETWD
- extern char *getwd (char *pathname);
- #endif
-
- #ifndef HAVE_RENAME
- extern int rename (CONST char *from, CONST char *to);
- #endif
-
- #ifndef HAVE_DUP2
- extern int dup2 (int oldd, int newd);
- #endif
-
- #ifdef VMS
- extern void init_vms_input (void);
- extern void stop_vms_input (void);
-
- extern int vms_truncate (char *fn);
- extern int vlimit (void); /* BTW, name conflicts with unix syscall */
- extern int define_logical_name (char *varname, char *string)
- extern int delete_logical_name (char *varname);
- extern int rename_sans_version (char *from, char *to);
- extern char *vmserrstr (int status);
- extern char *sys_translate_vms (char *vfile);
- extern char *sys_translate_unix (char *ufile);
- extern int creat_copy_attrs (char *old, char *new);
- extern int link (char *file, char *new);
- #endif /* VMS */
-
- #ifndef HAVE_STRERROR
- /* X11R6 defines strerror as a macro */
- # ifdef strerror
- # undef strerror
- # endif
- extern CONST char *strerror (int);
- #endif
-
- #ifndef HAVE_H_ERRNO
- extern int h_errno;
- #endif
-
- #endif /* _XEMACS_SYSDEP_H_ */
-