Mercurial > hg > CbC > CbC_gcc
annotate libiberty/pex-msdos.c @ 158:494b0b89df80 default tip
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| author | Shinji KONO <kono@ie.u-ryukyu.ac.jp> |
|---|---|
| date | Mon, 25 May 2020 18:13:55 +0900 |
| parents | 1830386684a0 |
| children |
| rev | line source |
|---|---|
| 0 | 1 /* Utilities to execute a program in a subprocess (possibly linked by pipes |
| 2 with other subprocesses), and wait for it. Generic MSDOS specialization. | |
| 145 | 3 Copyright (C) 1996-2020 Free Software Foundation, Inc. |
| 0 | 4 |
| 5 This file is part of the libiberty library. | |
| 6 Libiberty is free software; you can redistribute it and/or | |
| 7 modify it under the terms of the GNU Library General Public | |
| 8 License as published by the Free Software Foundation; either | |
| 9 version 2 of the License, or (at your option) any later version. | |
| 10 | |
| 11 Libiberty is distributed in the hope that it will be useful, | |
| 12 but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
| 14 Library General Public License for more details. | |
| 15 | |
| 16 You should have received a copy of the GNU Library General Public | |
| 17 License along with libiberty; see the file COPYING.LIB. If not, | |
| 18 write to the Free Software Foundation, Inc., 51 Franklin Street - Fifth Floor, | |
| 19 Boston, MA 02110-1301, USA. */ | |
| 20 | |
| 21 #include "pex-common.h" | |
| 22 | |
| 23 #include <stdio.h> | |
| 24 #include <errno.h> | |
| 25 #ifdef NEED_DECLARATION_ERRNO | |
| 26 extern int errno; | |
| 27 #endif | |
| 28 #ifdef HAVE_STRING_H | |
| 29 #include <string.h> | |
| 30 #endif | |
| 31 #ifdef HAVE_STDLIB_H | |
| 32 #include <stdlib.h> | |
| 33 #endif | |
| 34 | |
| 35 #include "safe-ctype.h" | |
| 36 #include <process.h> | |
| 37 | |
| 38 /* The structure we keep in obj->sysdep. */ | |
| 39 | |
| 40 #define PEX_MSDOS_FILE_COUNT 3 | |
| 41 | |
| 42 #define PEX_MSDOS_FD_OFFSET 10 | |
| 43 | |
| 44 struct pex_msdos | |
| 45 { | |
| 46 /* An array of file names. We refer to these using file descriptors | |
| 47 of 10 + array index. */ | |
| 48 const char *files[PEX_MSDOS_FILE_COUNT]; | |
| 49 /* Exit statuses of programs which have been run. */ | |
| 50 int *statuses; | |
| 51 }; | |
| 52 | |
| 53 static int pex_msdos_open (struct pex_obj *, const char *, int); | |
| 54 static int pex_msdos_open (struct pex_obj *, const char *, int); | |
| 55 static int pex_msdos_fdindex (struct pex_msdos *, int); | |
| 56 static pid_t pex_msdos_exec_child (struct pex_obj *, int, const char *, | |
| 57 char * const *, char * const *, | |
| 58 int, int, int, int, | |
| 59 int, const char **, int *); | |
| 60 static int pex_msdos_close (struct pex_obj *, int); | |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
61 static pid_t pex_msdos_wait (struct pex_obj *, pid_t, int *, struct pex_time *, |
| 0 | 62 int, const char **, int *); |
| 63 static void pex_msdos_cleanup (struct pex_obj *); | |
| 64 | |
| 65 /* The list of functions we pass to the common routines. */ | |
| 66 | |
| 67 const struct pex_funcs funcs = | |
| 68 { | |
| 69 pex_msdos_open, | |
| 70 pex_msdos_open, | |
| 71 pex_msdos_exec_child, | |
| 72 pex_msdos_close, | |
| 73 pex_msdos_wait, | |
| 74 NULL, /* pipe */ | |
| 75 NULL, /* fdopenr */ | |
| 76 NULL, /* fdopenw */ | |
| 77 pex_msdos_cleanup | |
| 78 }; | |
| 79 | |
| 80 /* Return a newly initialized pex_obj structure. */ | |
| 81 | |
| 82 struct pex_obj * | |
| 83 pex_init (int flags, const char *pname, const char *tempbase) | |
| 84 { | |
| 85 struct pex_obj *ret; | |
| 86 int i; | |
| 87 | |
| 88 /* MSDOS does not support pipes. */ | |
| 89 flags &= ~ PEX_USE_PIPES; | |
| 90 | |
| 91 ret = pex_init_common (flags, pname, tempbase, funcs); | |
| 92 | |
| 93 ret->sysdep = XNEW (struct pex_msdos); | |
| 94 for (i = 0; i < PEX_MSDOS_FILE_COUNT; ++i) | |
| 95 ret->files[i] = NULL; | |
| 96 ret->statuses = NULL; | |
| 97 | |
| 98 return ret; | |
| 99 } | |
| 100 | |
| 101 /* Open a file. FIXME: We ignore the binary argument, since we have | |
| 102 no way to handle it. */ | |
| 103 | |
| 104 static int | |
| 105 pex_msdos_open (struct pex_obj *obj, const char *name, | |
| 106 int binary ATTRIBUTE_UNUSED) | |
| 107 { | |
| 108 struct pex_msdos *ms; | |
| 109 int i; | |
| 110 | |
| 111 ms = (struct pex_msdos *) obj->sysdep; | |
| 112 | |
| 113 for (i = 0; i < PEX_MSDOS_FILE_COUNT; ++i) | |
| 114 { | |
| 115 if (ms->files[i] == NULL) | |
| 116 { | |
| 117 ms->files[i] = xstrdup (name); | |
| 118 return i + PEX_MSDOS_FD_OFFSET; | |
| 119 } | |
| 120 } | |
| 121 | |
| 122 abort (); | |
| 123 } | |
| 124 | |
| 125 /* Get the index into msdos->files associated with an open file | |
| 126 descriptor. */ | |
| 127 | |
| 128 static int | |
| 129 pex_msdos_fdindex (struct pex_msdos *ms, int fd) | |
| 130 { | |
| 131 fd -= PEX_MSDOS_FD_OFFSET; | |
| 132 if (fd < 0 || fd >= PEX_MSDOS_FILE_COUNT || ms->files[fd] == NULL) | |
| 133 abort (); | |
| 134 return fd; | |
| 135 } | |
| 136 | |
| 137 | |
| 138 /* Close a file. */ | |
| 139 | |
| 140 static int | |
| 141 pex_msdos_close (struct pex_obj *obj, int fd) | |
| 142 { | |
| 143 struct pex_msdos *ms; | |
| 144 int fdinex; | |
| 145 | |
| 146 ms = (struct pex_msdos *) obj->sysdep; | |
| 147 fdindex = pe_msdos_fdindex (ms, fd); | |
| 148 free (ms->files[fdindex]); | |
| 149 ms->files[fdindex] = NULL; | |
| 150 } | |
| 151 | |
| 152 /* Execute a child. */ | |
| 153 | |
| 154 static pid_t | |
| 155 pex_msdos_exec_child (struct pex_obj *obj, int flags, const char *executable, | |
| 156 char * const * argv, char * const * env, int in, int out, | |
| 157 int toclose ATTRIBUTE_UNUSED, | |
| 158 int errdes ATTRIBUTE_UNUSED, const char **errmsg, | |
| 159 int *err) | |
| 160 { | |
| 161 struct pex_msdos *ms; | |
| 162 char *temp_base; | |
| 163 int temp_base_allocated; | |
| 164 char *rf; | |
| 165 int inindex; | |
| 166 char *infile; | |
| 167 int outindex; | |
| 168 char *outfile; | |
| 169 char *scmd; | |
| 170 FILE *argfile; | |
| 171 int i; | |
| 172 int status; | |
| 173 | |
| 174 ms = (struct pex_msdos *) obj->sysdep; | |
| 175 | |
| 176 /* FIXME: I don't know how to redirect stderr, so we ignore ERRDES | |
| 177 and PEX_STDERR_TO_STDOUT. */ | |
| 178 | |
| 179 temp_base = obj->temp_base; | |
| 180 if (temp_base != NULL) | |
| 181 temp_base_allocated = 0; | |
| 182 else | |
| 183 { | |
| 184 temp_base = choose_temp_base (); | |
| 185 temp_base_allocated = 1; | |
| 186 } | |
| 187 | |
| 188 rf = concat (temp_base, ".gp", NULL); | |
| 189 | |
| 190 if (temp_base_allocated) | |
| 191 free (temp_base); | |
| 192 | |
| 193 if (in == STDIN_FILE_NO) | |
| 194 { | |
| 195 inindex = -1; | |
| 196 infile = ""; | |
| 197 } | |
| 198 else | |
| 199 { | |
| 200 inindex = pex_msdos_fdindex (ms, in); | |
| 201 infile = ms->files[inindex]; | |
| 202 } | |
| 203 | |
| 204 if (out == STDOUT_FILE_NO) | |
| 205 { | |
| 206 outindex = -1; | |
| 207 outfile = ""; | |
| 208 } | |
| 209 else | |
| 210 { | |
| 211 outindex = pex_msdos_fdindex (ms, out); | |
| 212 outfile = ms->files[outindex]; | |
| 213 } | |
| 214 | |
| 215 scmd = XNEWVEC (char, strlen (program) | |
| 216 + ((flags & PEXECUTE_SEARCH) != 0 ? 4 : 0) | |
| 217 + strlen (rf) | |
| 218 + strlen (infile) | |
| 219 + strlen (outfile) | |
| 220 + 10); | |
| 221 sprintf (scmd, "%s%s @%s%s%s%s%s", | |
| 222 program, | |
| 223 (flags & PEXECUTE_SEARCH) != 0 ? ".exe" : "", | |
| 224 rf, | |
| 225 inindex != -1 ? " <" : "", | |
| 226 infile, | |
| 227 outindex != -1 ? " >" : "", | |
| 228 outfile); | |
| 229 | |
| 230 argfile = fopen (rf, "w"); | |
| 231 if (argfile == NULL) | |
| 232 { | |
| 233 *err = errno; | |
| 234 free (scmd); | |
| 235 free (rf); | |
| 236 *errmsg = "cannot open temporary command file"; | |
| 237 return (pid_t) -1; | |
| 238 } | |
| 239 | |
| 240 for (i = 1; argv[i] != NULL; ++i) | |
| 241 { | |
| 242 char *p; | |
| 243 | |
| 244 for (p = argv[i]; *p != '\0'; ++p) | |
| 245 { | |
| 246 if (*p == '"' || *p == '\'' || *p == '\\' || ISSPACE (*p)) | |
| 247 putc ('\\', argfile); | |
| 248 putc (*p, argfile); | |
| 249 } | |
| 250 putc ('\n', argfile); | |
| 251 } | |
| 252 | |
| 253 fclose (argfile); | |
| 254 | |
| 255 status = system (scmd); | |
| 256 | |
| 257 if (status == -1) | |
| 258 { | |
| 259 *err = errno; | |
| 260 remove (rf); | |
| 261 free (scmd); | |
| 262 free (rf); | |
| 263 *errmsg = "system"; | |
| 264 return (pid_t) -1; | |
| 265 } | |
| 266 | |
| 267 remove (rf); | |
| 268 free (scmd); | |
| 269 free (rf); | |
| 270 | |
| 271 /* Save the exit status for later. When we are called, obj->count | |
| 272 is the number of children which have executed before this | |
| 273 one. */ | |
| 274 ms->statuses = XRESIZEVEC(int, ms->statuses, obj->count + 1); | |
| 275 ms->statuses[obj->count] = status; | |
| 276 | |
| 277 return (pid_t) obj->count; | |
| 278 } | |
| 279 | |
| 280 /* Wait for a child process to complete. Actually the child process | |
| 281 has already completed, and we just need to return the exit | |
| 282 status. */ | |
| 283 | |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
284 static pid_t |
| 0 | 285 pex_msdos_wait (struct pex_obj *obj, pid_t pid, int *status, |
| 286 struct pex_time *time, int done ATTRIBUTE_UNUSED, | |
| 287 const char **errmsg ATTRIBUTE_UNUSED, | |
| 288 int *err ATTRIBUTE_UNUSED) | |
| 289 { | |
| 290 struct pex_msdos *ms; | |
| 291 | |
| 292 ms = (struct pex_msdos *) obj->sysdep; | |
| 293 | |
| 294 if (time != NULL) | |
| 295 memset (time, 0, sizeof *time); | |
| 296 | |
| 297 *status = ms->statuses[pid]; | |
| 298 | |
| 299 return 0; | |
| 300 } | |
| 301 | |
| 302 /* Clean up the pex_msdos structure. */ | |
| 303 | |
| 304 static void | |
| 305 pex_msdos_cleanup (struct pex_obj *obj) | |
| 306 { | |
| 307 struct pex_msdos *ms; | |
| 308 int i; | |
| 309 | |
| 310 ms = (struct pex_msdos *) obj->sysdep; | |
| 311 for (i = 0; i < PEX_MSDOS_FILE_COUNT; ++i) | |
| 111 | 312 free (msdos->files[i]); |
| 313 free (msdos->statuses); | |
| 0 | 314 free (msdos); |
| 315 obj->sysdep = NULL; | |
| 316 } |