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428
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1 /* System-dependent prototypes
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2 Copyright (C) 1985, 1993, 1994 Free Software Foundation, Inc.
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3
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4 This file is part of XEmacs.
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5
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6 XEmacs is free software; you can redistribute it and/or modify it
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7 under the terms of the GNU General Public License as published by the
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8 Free Software Foundation; either version 2, or (at your option) any
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9 later version.
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10
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11 XEmacs is distributed in the hope that it will be useful, but WITHOUT
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12 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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13 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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14 for more details.
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15
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16 You should have received a copy of the GNU General Public License
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17 along with XEmacs; see the file COPYING. If not, write to
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18 the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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19 Boston, MA 02111-1307, USA. */
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20
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21 /* Synched up with: FSF 19.30. Split out of sysdep.c/emacs.c. */
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22
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440
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23 #ifndef INCLUDED_sysdep_h_
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24 #define INCLUDED_sysdep_h_
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428
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25
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26 #include <setjmp.h>
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27
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442
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28 #ifndef WIN32_NATIVE
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428
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29 extern char **environ;
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440
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30 #endif
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428
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31
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442
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32 #ifdef PDUMP
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33 int pdump_read_file (char **pdump_start_pos, size_t *pdump_length);
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34 #endif
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35
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428
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36 int eight_bit_tty (struct device *d);
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37
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38 void stuff_char (struct console *con, int c);
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39
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40 void init_baud_rate (struct device *d);
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41
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42 void set_exclusive_use (int fd);
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43
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44 void set_descriptor_non_blocking (int fd);
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45
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46 void wait_without_blocking (void);
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47
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48 int get_pty_max_bytes (int fd);
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49 Bufbyte get_eof_char (int fd);
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50
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51 /* Wait for subprocess with process id `pid' to terminate and
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52 make sure it will get eliminated (not remain forever as a zombie) */
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442
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53 #ifndef WIN32_NATIVE
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428
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54 void wait_for_termination (int pid);
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432
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55 #endif
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428
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56
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57 /* flush any pending output
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58 * (may flush input as well; it does not matter the way we use it)
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59 */
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60 void flush_pending_output (int channel);
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61
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62 void child_setup_tty (int out);
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63
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64 /* Suspend the Emacs process; give terminal to its superior. */
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65 void sys_suspend (void);
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66 /* Suspend a process if possible; give terminal to its superior. */
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67 void sys_suspend_process (int process);
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68
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69 void request_sigio (void);
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70 void unrequest_sigio (void);
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71
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72 void stop_interrupts (void);
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73 void start_interrupts (void);
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74 void slow_down_interrupts (void);
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75 void speed_up_interrupts (void);
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76 void init_poll_for_quit (void);
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77 void reset_poll_for_quit (void);
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78
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79 /* Used so that signals can break out of system calls that aren't
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80 naturally interruptible. */
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81
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82 extern JMP_BUF break_system_call_jump;
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83 extern volatile int can_break_system_calls;
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84
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442
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85 ssize_t sys_write_1 (int fildes, const void *buf, size_t nbyte,
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430
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86 int allow_quit);
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87 ssize_t sys_read_1 (int fildes, void *buf, size_t nbyte,
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88 int allow_quit);
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428
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89
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90 /* Call these functions if you want to change some terminal parameter --
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91 reset the console, change the parameter, and init it again. */
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92 void init_one_console (struct console *c);
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93 void reset_one_console (struct console *c);
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94 void init_one_device (struct device *d);
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95 void reset_one_device (struct device *d);
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96
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97 /* Prepare all terminals for exiting Emacs; move the cursor to the
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98 bottom of the frame, turn off special modes, etc. Called at exit.
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99 This calls reset_one_console() on all consoles and does some other
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100 stuff (e.g. fix the foreground pgroup). */
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101
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102 void reset_all_consoles (void);
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103
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104 /* Call these functions if you are going to temporarily exit back to
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105 the shell (e.g. when suspending). This calls reset_one_console()
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106 on the initial console and does some other stuff (e.g. fix the
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107 foreground pgroup). */
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108
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109 void reset_initial_console (void);
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110 void reinit_initial_console (void);
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111
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112 /* We muck around with our process group. This function needs
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113 to be called at startup. The rest of the mucking is done as
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114 part of the functions reset_all_consoles(), reset_initial_console(),
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115 and reinit_initial_console(). */
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116
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117 void init_process_group (void);
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118 void munge_tty_process_group (void);
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119 void unmunge_tty_process_group (void);
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120
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121 void disconnect_controlling_terminal (void);
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122
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123 /* Return nonzero if safe to use tabs in output.
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124 At the time this is called, init_sys_modes has not been done yet. */
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125 int tabs_safe_p (struct device *d);
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126
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127 /* Get terminal size from system.
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128 If zero or a negative number is stored, the value is not valid. */
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129 void get_tty_device_size (struct device *d, int *widthp, int *heightp);
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130 /* Set the logical window size associated with descriptor FD */
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131 int set_window_size (int fd, int height, int width);
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132
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133 /* Set up the proper status flags for use of a pty. */
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134 void setup_pty (int fd);
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135
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136 /* Return the address of the start of the text segment prior to unexec. */
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137 char *start_of_text (void);
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138 /* Return the address of the start of the data segment prior to unexec. */
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139 void *start_of_data (void);
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140 /* Return the address of the end of the text segment prior to unexec. */
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141 char *end_of_text (void);
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142 /* Return the address of the end of the data segment prior to unexec. */
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143 char *end_of_data (void);
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144
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145 /* Get_system_name returns as its value a string for system-name to return. */
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146 void init_system_name (void);
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147
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148 #ifndef HAVE_GETCWD
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442
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149 char *getcwd (char *pathname, size_t size);
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428
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150 #endif
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151
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152 #ifndef HAVE_RENAME
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442
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153 int rename (const char *from, const char *to);
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428
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154 #endif
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155
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156 #ifndef HAVE_DUP2
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157 int dup2 (int oldd, int newd);
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158 #endif
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159
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160 #ifndef HAVE_STRERROR
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161 /* X11R6 defines strerror as a macro */
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162 # ifdef strerror
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163 # undef strerror
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164 # endif
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442
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165 const char *strerror (int);
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428
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166 #endif
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167
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442
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168 int interruptible_open (const char *path, int oflag, int mode);
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428
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169
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170 #ifndef HAVE_H_ERRNO
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171 extern int h_errno;
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172 #endif
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173
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174 #ifdef HAVE_REALPATH
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175 #define xrealpath realpath
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176 #else
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442
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177 char *xrealpath(const char *path, char resolved_path []);
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428
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178 #endif
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179
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440
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180 #endif /* INCLUDED_sysdep_h_ */
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