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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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23 #ifndef _XEMACS_SYSDEP_H_
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24 #define _XEMACS_SYSDEP_H_
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25
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26 #include <setjmp.h>
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27
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28 #if !defined(VMS) || !defined(LINK_CRTL_SHARE) || !defined(SHAREABLE_LIB_BUG)
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29 extern char **environ;
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30 #else
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31 extern noshare char **environ;
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32 #endif /* VMS sharable environ bug */
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33
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34 struct emacs_tty;
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35 int emacs_get_tty (int fd, struct emacs_tty *settings);
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36 int emacs_set_tty (int fd, struct emacs_tty *settings, int waitp);
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37
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38 int eight_bit_tty (struct device *d);
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39
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40 void stuff_char (struct console *con, int c);
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41
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42 void init_baud_rate (struct device *d);
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43
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44 void set_exclusive_use (int fd);
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45
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46 void set_descriptor_non_blocking (int fd);
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47
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48 void wait_without_blocking (void);
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49
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50 /* Wait for subprocess with process id `pid' to terminate and
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51 make sure it will get eliminated (not remain forever as a zombie) */
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52 void wait_for_termination (int pid);
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53
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54 /* flush any pending output
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55 * (may flush input as well; it does not matter the way we use it)
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56 */
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57 void flush_pending_output (int channel);
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58
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59 void child_setup_tty (int out);
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60
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61 /* Suspend the Emacs process; give terminal to its superior. */
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62 void sys_suspend (void);
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63
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64 void request_sigio (void);
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65 void unrequest_sigio (void);
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66
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67 void stop_interrupts (void);
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68 void start_interrupts (void);
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69 void slow_down_interrupts (void);
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70 void speed_up_interrupts (void);
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71 void init_poll_for_quit (void);
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72 void reset_poll_for_quit (void);
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73
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74 /* Used so that signals can break out of system calls that aren't
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75 naturally interruptible. */
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76
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77 extern JMP_BUF break_system_call_jump;
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16
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78 extern volatile int can_break_system_calls;
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0
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79
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80 int sys_write_1 (int fildes, CONST void *buf, unsigned int nbyte,
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81 int allow_quit);
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82 int sys_read_1 (int fildes, void *buf, unsigned int nbyte,
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83 int allow_quit);
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84
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85 /* Call these functions if you want to change some terminal parameter --
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86 reset the console, change the parameter, and init it again. */
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87 void init_one_console (struct console *c);
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88 void reset_one_console (struct console *c);
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89 void init_one_device (struct device *d);
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90 void reset_one_device (struct device *d);
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91
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92 /* Prepare all terminals for exiting Emacs; move the cursor to the
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93 bottom of the frame, turn off special modes, etc. Called at exit.
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94 This calls reset_one_console() on all consoles and does some other
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95 stuff (e.g. fix the foreground pgroup). */
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96
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97 void reset_all_consoles (void);
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98
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99 /* Call these functions if you are going to temporarily exit back to
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100 the shell (e.g. when suspending). This calls reset_one_console()
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101 on the initial console and does some other stuff (e.g. fix the
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102 foreground pgroup). */
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103
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104 void reset_initial_console (void);
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105 void reinit_initial_console (void);
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106
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107 /* We muck around with our process group. This function needs
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108 to be called at startup. The rest of the mucking is done as
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109 part of the functions reset_all_consoles(), reset_initial_console(),
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110 and reinit_initial_console(). */
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111
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112 void init_process_group (void);
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113 void munge_tty_process_group (void);
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114 void unmunge_tty_process_group (void);
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115
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116 void disconnect_controlling_terminal (void);
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117
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118 /* Return nonzero if safe to use tabs in output.
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119 At the time this is called, init_sys_modes has not been done yet. */
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120 int tabs_safe_p (struct device *d);
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121
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122 /* Get terminal size from system.
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123 If zero or a negative number is stored, the value is not valid. */
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124 void get_tty_device_size (struct device *d, int *widthp, int *heightp);
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125 /* Set the logical window size associated with descriptor FD */
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126 int set_window_size (int fd, int height, int width);
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127
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128 /* Set up the proper status flags for use of a pty. */
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129 void setup_pty (int fd);
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130
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131 /* Return the address of the start of the text segment prior to unexec. */
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132 char *start_of_text (void);
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133 /* Return the address of the start of the data segment prior to unexec. */
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134 void *start_of_data (void);
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135 /* Return the address of the end of the text segment prior to unexec. */
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136 char *end_of_text (void);
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137 /* Return the address of the end of the data segment prior to unexec. */
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138 char *end_of_data (void);
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139
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140 /* Get_system_name returns as its value a string for system-name to return. */
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141 void init_system_name (void);
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142
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143 #ifndef HAVE_GETWD
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144 char *getwd (char *pathname);
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145 #endif
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146
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147 #ifndef HAVE_RENAME
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148 int rename (CONST char *from, CONST char *to);
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149 #endif
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150
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151 #ifndef HAVE_DUP2
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152 int dup2 (int oldd, int newd);
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153 #endif
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154
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155 #ifdef VMS
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156 void init_vms_input (void);
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157
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158 int vms_truncate (char *fn);
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159 int vlimit (void); /* BTW, name conflicts with unix syscall */
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160 int define_logical_name (char *varname, char *string)
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161 int delete_logical_name (char *varname);
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162 int rename_sans_version (char *from, char *to);
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163 char *vmserrstr (int status);
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164 char *sys_translate_vms (char *vfile);
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165 char *sys_translate_unix (char *ufile);
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166 int creat_copy_attrs (char *old, char *new);
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167 int link (char *file, char *new);
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168 #endif /* VMS */
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169
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170 #ifndef HAVE_STRERROR
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171 /* X11R6 defines strerror as a macro */
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172 # ifdef strerror
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173 # undef strerror
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174 # endif
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175 CONST char *strerror (int);
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176 #endif
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177
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178 #ifndef HAVE_H_ERRNO
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179 extern int h_errno;
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180 #endif
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181
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182 #endif /* _XEMACS_SYSDEP_H_ */
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