1 /* System-dependent prototypes
2 Copyright (C) 1985, 1993, 1994 Free Software Foundation, Inc.
4 This file is part of XEmacs.
6 XEmacs is free software; you can redistribute it and/or modify it
7 under the terms of the GNU General Public License as published by the
8 Free Software Foundation; either version 2, or (at your option) any
11 XEmacs is distributed in the hope that it will be useful, but WITHOUT
12 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
16 You should have received a copy of the GNU General Public License
17 along with XEmacs; see the file COPYING. If not, write to
18 the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
19 Boston, MA 02111-1307, USA. */
21 /* Synched up with: FSF 19.30. Split out of sysdep.c/emacs.c. */
23 #ifndef _XEMACS_SYSDEP_H_
24 #define _XEMACS_SYSDEP_H_
28 extern char **environ;
30 int eight_bit_tty (struct device *d);
32 void stuff_char (struct console *con, int c);
34 void init_baud_rate (struct device *d);
36 void set_exclusive_use (int fd);
38 void set_descriptor_non_blocking (int fd);
40 void wait_without_blocking (void);
42 int get_pty_max_bytes (int fd);
43 Bufbyte get_eof_char (int fd);
45 /* Wait for subprocess with process id `pid' to terminate and
46 make sure it will get eliminated (not remain forever as a zombie) */
49 void wait_for_termination (HANDLE pid);
51 void wait_for_termination (int pid);
54 /* flush any pending output
55 * (may flush input as well; it does not matter the way we use it)
57 void flush_pending_output (int channel);
59 void child_setup_tty (int out);
61 /* Suspend the Emacs process; give terminal to its superior. */
62 void sys_suspend (void);
63 /* Suspend a process if possible; give terminal to its superior. */
64 void sys_suspend_process (int process);
66 void request_sigio (void);
67 void unrequest_sigio (void);
69 void stop_interrupts (void);
70 void start_interrupts (void);
71 void slow_down_interrupts (void);
72 void speed_up_interrupts (void);
73 void init_poll_for_quit (void);
74 void reset_poll_for_quit (void);
76 /* Used so that signals can break out of system calls that aren't
77 naturally interruptible. */
79 extern JMP_BUF break_system_call_jump;
80 extern volatile int can_break_system_calls;
82 ssize_t sys_write_1 (int fildes, CONST void *buf, size_t nbyte,
84 ssize_t sys_read_1 (int fildes, void *buf, size_t nbyte,
87 /* Call these functions if you want to change some terminal parameter --
88 reset the console, change the parameter, and init it again. */
89 void init_one_console (struct console *c);
90 void reset_one_console (struct console *c);
91 void init_one_device (struct device *d);
92 void reset_one_device (struct device *d);
94 /* Prepare all terminals for exiting Emacs; move the cursor to the
95 bottom of the frame, turn off special modes, etc. Called at exit.
96 This calls reset_one_console() on all consoles and does some other
97 stuff (e.g. fix the foreground pgroup). */
99 void reset_all_consoles (void);
101 /* Call these functions if you are going to temporarily exit back to
102 the shell (e.g. when suspending). This calls reset_one_console()
103 on the initial console and does some other stuff (e.g. fix the
104 foreground pgroup). */
106 void reset_initial_console (void);
107 void reinit_initial_console (void);
109 /* We muck around with our process group. This function needs
110 to be called at startup. The rest of the mucking is done as
111 part of the functions reset_all_consoles(), reset_initial_console(),
112 and reinit_initial_console(). */
114 void init_process_group (void);
115 void munge_tty_process_group (void);
116 void unmunge_tty_process_group (void);
118 void disconnect_controlling_terminal (void);
120 /* Return nonzero if safe to use tabs in output.
121 At the time this is called, init_sys_modes has not been done yet. */
122 int tabs_safe_p (struct device *d);
124 /* Get terminal size from system.
125 If zero or a negative number is stored, the value is not valid. */
126 void get_tty_device_size (struct device *d, int *widthp, int *heightp);
127 /* Set the logical window size associated with descriptor FD */
128 int set_window_size (int fd, int height, int width);
130 /* Set up the proper status flags for use of a pty. */
131 void setup_pty (int fd);
133 /* Return the address of the start of the text segment prior to unexec. */
134 char *start_of_text (void);
135 /* Return the address of the start of the data segment prior to unexec. */
136 void *start_of_data (void);
137 /* Return the address of the end of the text segment prior to unexec. */
138 char *end_of_text (void);
139 /* Return the address of the end of the data segment prior to unexec. */
140 char *end_of_data (void);
142 /* Get_system_name returns as its value a string for system-name to return. */
143 void init_system_name (void);
146 char *getcwd (char *pathname, int size);
150 int rename (CONST char *from, CONST char *to);
154 int dup2 (int oldd, int newd);
157 #ifndef HAVE_STRERROR
158 /* X11R6 defines strerror as a macro */
162 CONST char *strerror (int);
166 void mswindows_set_errno (unsigned long win32_error);
167 void mswindows_set_last_errno (void);
170 int interruptible_open (CONST char *path, int oflag, int mode);
177 #define xrealpath realpath
179 char *xrealpath(CONST char *path, char resolved_path []);
182 #endif /* _XEMACS_SYSDEP_H_ */