annotate src/hftctl.c @ 844:047d37eb70d7

[xemacs-hg @ 2002-05-16 13:30:23 by ben] ui fixes for things that were bothering me bytecode.c, editfns.c, lisp.h, lread.c: Fix save-restriction to use markers rather than pseudo-markers (integers representing the amount of text on either side of the region). That way, all inserts are handled correctly, not just those inside old restriction. Add buffer argument to save_restriction_save(). process.c: Clean up very dirty and kludgy code that outputs into a buffer -- use proper unwind protects, etc. font-lock.c: Do save-restriction/widen around the function -- otherwise, incorrect results will ensue when a buffer has been narrowed before a call to e.g. `buffer-syntactic-context' -- something that happens quite often. fileio.c: Look for a handler for make-temp-name. window.c, winslots.h: Try to solve this annoying problem: have two frames displaying the buffer, in different places; in one, temporarily switch away to another buffer and then back -- and you've lost your position; it's reset to the other one in the other frame. My current solution involves window-level caches of buffers and points (also a cache for window-start); when set-window-buffer is called, it looks to see if the buffer was previously visited in the window, and if so, uses the most recent point at that time. (It's a marker, so it handles changes.) #### Note: It could be argued that doing it on the frame level would be better -- e.g. if you visit a buffer temporarily through a grep, and then go back to that buffer, you presumably want the grep's position rather than some previous position provided everything was in the same frame, even though the grep was in another window in the frame. However, doing it on the frame level fails when you have two windows on the same frame. Perhaps we keep both a window and a frame cache, and use the frame cache if there are no other windows on the frame showing the buffer, else the window's cache? This is probably something to be configurable using a specifier. Suggestions please please please? window.c: Clean up a bit code that deals with the annoyance of window-point vs. point. dialog.el: Function to ask a multiple-choice question, automatically choosing a dialog box or minibuffer representation as necessary. Generalized version of yes-or-no-p, y-or-n-p. files.el: Use get-user-response to ask "yes/no/diff" question when recovering. "diff" means that a diff is displayed between the current file and the autosave. (Converts/deconverts escape-quoted as necessary. No more complaints from you, Mr. Turnbull!) One known problem: when a dialog is used, it's modal, so you can't scroll the diff. Will fix soon. lisp-mode.el: If we're filling a string, don't treat semicolon as a comment, which would give very unfriendly results. Uses `buffer-syntactic-context'. simple.el: all changes back to the beginning. (Useful if you've saved the file in the middle of the changes.) simple.el: Add option kill-word-into-kill-ring, which controls whether words deleted with kill-word, backward-kill-word, etc. are "cut" into the kill ring, or "cleared" into nothingness. (My preference is the latter, by far. I'd almost go so far as suggesting we make it the default, as you can always select a word and then cut it if you want it cut.) menubar-items.el: Add option corresponding to kill-word-into-kill-ring.
author ben
date Thu, 16 May 2002 13:30:58 +0000
parents b39c14581166
children a8d8f419b459
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1 /* IBM has disclaimed copyright on this module. */
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2
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3 /* Synched up with: FSF 19.30. */
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4
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5 /***************************************************************/
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6 /* */
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7 /* Function: hftctl */
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8 /* */
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9 /* Syntax: */
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10 /* #include <sys/ioctl.h> */
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11 /* #include <sys/hft.h> */
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12 /* */
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13 /* int hftctl(fildes, request, arg ) */
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14 /* int fildes, request; */
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15 /* char *arg; */
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16 /* */
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17 /* Description: */
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18 /* */
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19 /* Does the following: */
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20 /* 1. determines if fildes is pty */
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21 /* does normal ioctl it is not */
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22 /* 2. places fildes into raw mode */
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23 /* 3. converts ioctl arguments to data stream */
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24 /* 4. waits for 2 secs for acknowledgement before */
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25 /* timing out. */
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26 /* 5. places response in callers buffer ( just like */
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27 /* ioctl. */
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28 /* 6. returns fildes to its original mode */
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29 /* */
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30 /* User of this program should review steps 1,4, and 3. */
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31 /* hftctl makes no check on the request type. It must be */
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32 /* a HFT ioctl that is supported remotely. */
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33 /* This program will use the SIGALRM and alarm(2). Any */
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34 /* Previous alarms are lost. */
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35 /* */
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36 /* Users of this program are free to modify it any way */
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37 /* they want. */
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38 /* */
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39 /* Return Value: */
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40 /* */
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41 /* If ioctl fails, a value of -1 is returned and errno */
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42 /* is set to indicate the error. */
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43 /* */
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44 /***************************************************************/
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45
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46 #include <config.h>
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47 #include "lisp.h"
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48 #include "sysfile.h"
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49
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50 #include <sys/signal.h>
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51 #include <errno.h>
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52
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53 #include <stdio.h>
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54 #include <fcntl.h>
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55 #include <setjmp.h>
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56 #include <sys/ioctl.h>
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57 #include <sys/devinfo.h>
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58 #include <termios.h>
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59 #include <termio.h>
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60 #include <sys/hft.h>
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61 #include <sys/uio.h>
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62 #include <sys/tty.h>
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63 /* #include <sys/pty.h> */
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64
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65 #define REMOTE 0x01
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66
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67 #undef ioctl
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68 static char SCCSid[] = "com/gnuemacs/src,3.1,9021-90/05/03-5/3/90";
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69
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70 /*************** LOCAL DEFINES **********************************/
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71
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72 #define QDEV ((HFQPDEVCH<<8)|HFQPDEVCL)
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73 #define QLOC ((HFQLOCCH<<8)|HFQLOCCL)
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74 #define QPS ((HFQPRESCH<<8)|HFQPRESCL)
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75
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76 #ifndef TCGETS
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77 #define TCGETS TCGETA
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78 #endif
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79 #ifndef TCSETS
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80 #define TCSETS TCSETA
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81 #endif
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82
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83 /*************** EXTERNAL / GLOBAL DATA AREA ********************/
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84
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85 static int hfqry();
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86 static int hfskbd();
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87
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88 extern int errno;
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89 static JMP_BUF hftenv;
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90 static int is_ack_vtd;
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91 static SIGTYPE (*sav_alrm) ();
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92 static struct hfctlreq req =
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93 { 0x1b,'[','x',0,0,0,21,HFCTLREQCH,HFCTLREQCL};
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94 static struct hfctlack ACK =
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95 { 0x1b,'[','x',0,0,0,21,HFCTLACKCH,HFCTLACKCL};
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96
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97 /* FUNC signal(); */
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98
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99 /*************** LOCAL MACROS ***********************************/
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100
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101 #define HFTYPE(p) ((p->hf_typehi<<8)|(p->hf_typelo))
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102
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103 #define BYTE4(p) ((p)[0]<<24 | (p)[1]<<16 | (p)[2]<<8 | (p)[3])
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104
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105 /* read a buffer */
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106 #define RD_BUF(f,p,l) \
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107 while ((l)) \
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108 if ((j = read ((f),(p),(l))) < 0) \
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109 if (errno != EINTR) return (-1); \
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110 else continue; \
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111 else { (l) -= j; (p) += j; }
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112
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113 /*************** function prototypes ***************************/
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114 #ifdef __STDC__
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115 static GT_ACK (int fd, int req, char *buf);
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116 static WR_REQ (int fd, int request, int cmdlen, char *cmd, int resplen);
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117 static void hft_alrm(int sig);
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118 #else
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119 static GT_ACK ();
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120 static WR_REQ ();
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121 static void hft_alrm ();
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122 #endif
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123
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124 /*************** HFTCTL FUNCTION *******************************/
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125
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126 hftctl (fd, request, arg)
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127 int fd;
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128 int request;
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129 union {
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130 struct hfintro *intro;
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131 struct hfquery *query;
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132 char *c;
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133 } arg;
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134 {
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135
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136 int i;
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137 int fd_flag; /* fcntl flags */
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138 union {
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139 struct hfintro *cmd; /* p.cmd - intro des. */
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140 struct hfqphdevc *ph; /* p.ph - physical dev.*/
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141 char *c; /* p.c - char ptr */
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142 } p; /* general pointer */
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143 int pty_new; /* pty modes */
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144 int pty_old;
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145 int retcode;
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146 struct termios term_new; /* terminal attributes */
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147 struct termios term_old;
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148 struct devinfo devInfo; /* defined in sys/devinfo.h */
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149
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150
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151 if (ioctl (fd, IOCINFO, &devInfo) == -1) return(-1);
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152
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153 if (devInfo.devtype != DD_PSEU) /* is it a pty? */
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154 return (ioctl(fd, request, arg)); /* no, do IOCTL */
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155
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156 /******* START PTY **************/
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157 /** Pty found, possible HFT */
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158 /** set new file des as raw */
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159 /** as you can. */
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160 /********************************/
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161
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
162 /* Get current state of file */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
163 /* descriptor & save */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
164 if ((fd_flag = fcntl (fd, F_GETFL, 0)) == -1) return (-1);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
165 if (ioctl (fd, TCGETS, &term_old) == -1) return (-1);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
166 /* set terminal attr to raw */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
167 /* and to delay on read */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
168 pty_new = pty_old | REMOTE;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
169 memcpy (&term_new, &term_old, sizeof (term_new));
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
170 term_new.c_iflag = 0;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
171 term_new.c_oflag = 0;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
172 term_new.c_lflag = 0;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
173 /* term_new.c_line = 0; */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
174 for (i = 1; i <= 5; i++)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
175 term_new.c_cc[i] = 0;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
176 term_new.c_cc[0] = -1;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
177 ioctl (fd, TCSETS, &term_new);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
178 if (fcntl (fd, F_SETFL, fd_flag & ~O_NDELAY) == -1)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
179 return(-1);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
180 /* call spacific function */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
181 if (request == HFSKBD)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
182 retcode = hfskbd (fd, request, arg.c);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
183 else /* assume HFQUERY */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
184 retcode = hfqry (fd, request, arg.c);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
185
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
186 fcntl (fd, F_SETFL, fd_flag); /* reset terminal to original */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
187 ioctl (fd, TCSETS, &term_old);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
188
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
189
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
190 return (retcode); /* return error */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
191 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
192
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
193 /*************** HFSKBD FUNCTION ******************************/
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
194 static int
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
195 hfskbd (fd, request, arg)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
196 int fd;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
197 int request;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
198 struct hfbuf *arg;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
199 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
200 WR_REQ(fd, request, arg->hf_buflen, arg->hf_bufp,0);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
201 return (GT_ACK(fd, request, arg->hf_bufp));
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
202 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
203
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
204 /*************** HFQUERY FUNCTION ******************************/
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
205 static int
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
206 hfqry (fd, request, arg)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
207 int fd;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
208 int request;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
209 struct hfquery *arg;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
210 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
211 WR_REQ(fd, request, arg->hf_cmdlen, arg->hf_cmd, arg->hf_resplen);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
212 return (GT_ACK(fd, request, arg->hf_resp));
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
213 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
214
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
215
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
216 /*************** GT_ACK FUNCTION ******************************/
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
217 static int
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
218 GT_ACK (fd, req, buf)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
219 int fd;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
220 int req;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
221 char *buf;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
222 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
223 struct hfctlack ack;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
224 int i = sizeof (ack);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
225 int j = 0;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
226 union {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
227 char *c;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
228 struct hfctlack *ack;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
229 } p;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
230
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
231 is_ack_vtd = 0; /* flag no ACT VTD yet */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
232
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
233 if (SETJMP (hftenv)) /* set environment in case */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
234 { /* of time out */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
235 errno = ENODEV; /* if time out, set errno */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
236 return (-1); /* flag error */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
237 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
238
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
239 alarm(3); /* time out in 3 secs */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
240 sav_alrm = signal (SIGALRM, hft_alrm); /* prepare to catch time out */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
241
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
242 p.ack = &ack;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
243 while (! is_ack_vtd) /* do until valid ACK VTD */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
244 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
245 RD_BUF(fd, p.c, i); /* read until a ACK VTD is fill*/
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
246
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
247 if (! memcmp (&ack, &ACK, sizeof (HFINTROSZ)) /* the ACK intro & */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
248 && (ack.hf_request == req)) /* is it the response we want ?*/
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
249 { /* yes, ACK VTD found */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
250 is_ack_vtd = 1; /* quickly, flag it */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
251 break; /* get the %$%#@ out of here */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
252 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
253
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
254 p.ack = &ack; /* no, then skip 1st */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
255 ++p.c; /* char and start over */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
256 i = sizeof (ack) - 1; /* one less ESC to cry over */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
257
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
258 while ((*p.c != 0x1b) && i) /* scan for next ESC */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
259 { ++p.c; --i; } /* if any */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
260
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
261 (i ? memcpy (&ack, p.c, i) : 0); /* if any left over, then move */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
262 p.ack = &ack; /* ESC to front of ack struct */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
263 p.c += i; /* skip over what's been read */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
264 i = sizeof (ack) - i; /* set what's left to be read */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
265 } /***** TRY AGAIN */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
266
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
267 alarm(0); /* ACK VTD received, reset alrm*/
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
268 signal (SIGALRM, sav_alrm); /* reset signal */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
269
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
270 if (i = ack.hf_arg_len) /* any data following ? */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
271 { /* yes, */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
272 RD_BUF(fd,buf,i); /* read until it is received */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
273 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
274
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
275 if (errno = ack.hf_retcode) /* set errno based on returned */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
276 return (-1); /* code, if 0, then no error */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
277 else
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
278 return (0); /* if set, then error returned */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
279 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
280
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
281 /*************** HFT_ALRM FUNCTION ******************************/
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
282 static void
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
283 hft_alrm (sig) /* Function hft_alrm - handle */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
284 int sig; /* alarm signal */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
285 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
286 signal (SIGALRM, sav_alrm); /* reset to previous */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
287
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
288 if (is_ack_vtd) /* has ack vtd arrived ? */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
289 return; /* yes, then continue */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
290 else /* no, then return with error */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
291 LONGJMP (hftenv, -1);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
292
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
293 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
294
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
295 /*********************************************************************/
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
296 /*** ***/
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
297 /*** NOTE: Both the HFCTLREQ and the arg structure should be ***/
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
298 /*** sent in one io write operation. If terminal ***/
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
299 /*** emulators are in NODELAY mode then multiple writes ***/
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
300 /*** may cause bogus information to be read by the emulator ***/
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
301 /*** depending on the timing. ***/
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
302 /*** ***/
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
303 /*********************************************************************/
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
304
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
305 static int
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
306 WR_REQ (fd, request, cmdlen, cmd, resplen)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
307 int fd;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
308 int request;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
309 int cmdlen;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
310 char *cmd;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
311 int resplen;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
312 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
313 struct {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
314 char *c;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
315 struct hfctlreq *req;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
316 } p;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
317 int size;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
318
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
319 req.hf_request = request;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
320 req.hf_arg_len = cmdlen;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
321 req.hf_rsp_len = resplen;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
322
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
323 if (cmdlen) /* if arg structure to pass */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
324 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
325 size = sizeof (struct hfctlreq) + cmdlen;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
326 if ((p.c = xmalloc(size)) == NULL) /* malloc one area */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
327 return (-1);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
328
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
329 memcpy (p.c, &req, sizeof (req)); /* copy CTL REQ struct */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
330 memcpy (p.c + sizeof (req), cmd, cmdlen); /* copy arg struct */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
331 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
332 else
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
333 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
334 p.req = &req; /* otherwise use only CTL REQ */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
335 size = sizeof (req);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
336 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
337
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
338 /* write request to terminal */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
339 if (write(fd,p.c,size) == -1) return (-1);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
340 if (p.req != &req) /* free if allocated */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
341 xfree (p.c);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
342 return (0);
3ecd8885ac67 Import from CVS: tag r21-2-22
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343 }