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 INCLUDED_sysdep_h_
24 #define INCLUDED_sysdep_h_
29 extern char **environ;
33 int pdump_read_file (char **pdump_start_pos, size_t *pdump_length);
36 int eight_bit_tty (struct device *d);
38 void stuff_char (struct console *con, int c);
40 void init_baud_rate (struct device *d);
42 void set_exclusive_use (int fd);
44 void set_descriptor_non_blocking (int fd);
46 void wait_without_blocking (void);
48 int get_pty_max_bytes (int fd);
49 Bufbyte get_eof_char (int fd);
51 /* Wait for subprocess with process id `pid' to terminate and
52 make sure it will get eliminated (not remain forever as a zombie) */
54 void wait_for_termination (int pid);
57 /* flush any pending output
58 * (may flush input as well; it does not matter the way we use it)
60 void flush_pending_output (int channel);
62 void child_setup_tty (int out);
64 /* Suspend the Emacs process; give terminal to its superior. */
65 void sys_suspend (void);
66 /* Suspend a process if possible; give terminal to its superior. */
67 void sys_suspend_process (int process);
69 void request_sigio (void);
70 void unrequest_sigio (void);
72 void stop_interrupts (void);
73 void start_interrupts (void);
74 void slow_down_interrupts (void);
75 void speed_up_interrupts (void);
76 void init_poll_for_quit (void);
77 void reset_poll_for_quit (void);
79 /* Used so that signals can break out of system calls that aren't
80 naturally interruptible. */
82 extern JMP_BUF break_system_call_jump;
83 extern volatile int can_break_system_calls;
85 ssize_t sys_write_1 (int fildes, const void *buf, size_t nbyte,
87 ssize_t sys_read_1 (int fildes, void *buf, size_t nbyte,
90 /* Call these functions if you want to change some terminal parameter --
91 reset the console, change the parameter, and init it again. */
92 void init_one_console (struct console *c);
93 void reset_one_console (struct console *c);
94 void init_one_device (struct device *d);
95 void reset_one_device (struct device *d);
97 /* Prepare all terminals for exiting Emacs; move the cursor to the
98 bottom of the frame, turn off special modes, etc. Called at exit.
99 This calls reset_one_console() on all consoles and does some other
100 stuff (e.g. fix the foreground pgroup). */
102 void reset_all_consoles (void);
104 /* Call these functions if you are going to temporarily exit back to
105 the shell (e.g. when suspending). This calls reset_one_console()
106 on the initial console and does some other stuff (e.g. fix the
107 foreground pgroup). */
109 void reset_initial_console (void);
110 void reinit_initial_console (void);
112 /* We muck around with our process group. This function needs
113 to be called at startup. The rest of the mucking is done as
114 part of the functions reset_all_consoles(), reset_initial_console(),
115 and reinit_initial_console(). */
117 void init_process_group (void);
118 void munge_tty_process_group (void);
119 void unmunge_tty_process_group (void);
121 void disconnect_controlling_terminal (void);
123 /* Return nonzero if safe to use tabs in output.
124 At the time this is called, init_sys_modes has not been done yet. */
125 int tabs_safe_p (struct device *d);
127 /* Get terminal size from system.
128 If zero or a negative number is stored, the value is not valid. */
129 void get_tty_device_size (struct device *d, int *widthp, int *heightp);
130 /* Set the logical window size associated with descriptor FD */
131 int set_window_size (int fd, int height, int width);
133 /* Set up the proper status flags for use of a pty. */
134 void setup_pty (int fd);
136 /* Return the address of the start of the text segment prior to unexec. */
137 char *start_of_text (void);
138 /* Return the address of the start of the data segment prior to unexec. */
139 void *start_of_data (void);
140 /* Return the address of the end of the text segment prior to unexec. */
141 char *end_of_text (void);
142 /* Return the address of the end of the data segment prior to unexec. */
143 char *end_of_data (void);
145 /* Get_system_name returns as its value a string for system-name to return. */
146 void init_system_name (void);
149 char *getcwd (char *pathname, size_t size);
153 int rename (const char *from, const char *to);
157 int dup2 (int oldd, int newd);
160 #ifndef HAVE_STRERROR
161 /* X11R6 defines strerror as a macro */
165 const char *strerror (int);
168 int interruptible_open (const char *path, int oflag, int mode);
175 #define xrealpath realpath
177 char *xrealpath(const char *path, char resolved_path []);
180 #endif /* INCLUDED_sysdep_h_ */