Mercurial > hg > CbC > CbC_gcc
annotate libiberty/pex-msdos.c @ 77:65b2ea5f1266
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author | Shinji KONO <kono@ie.u-ryukyu.ac.jp> |
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date | Tue, 20 Sep 2011 17:16:36 +0900 |
parents | 77e2b8dfacca |
children | 04ced10e8804 |
rev | line source |
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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. | |
3 Copyright (C) 1996, 1997, 1998, 1999, 2000, 2001, 2003, 2005 | |
4 Free Software Foundation, Inc. | |
5 | |
6 This file is part of the libiberty library. | |
7 Libiberty is free software; you can redistribute it and/or | |
8 modify it under the terms of the GNU Library General Public | |
9 License as published by the Free Software Foundation; either | |
10 version 2 of the License, or (at your option) any later version. | |
11 | |
12 Libiberty is distributed in the hope that it will be useful, | |
13 but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
15 Library General Public License for more details. | |
16 | |
17 You should have received a copy of the GNU Library General Public | |
18 License along with libiberty; see the file COPYING.LIB. If not, | |
19 write to the Free Software Foundation, Inc., 51 Franklin Street - Fifth Floor, | |
20 Boston, MA 02110-1301, USA. */ | |
21 | |
22 #include "pex-common.h" | |
23 | |
24 #include <stdio.h> | |
25 #include <errno.h> | |
26 #ifdef NEED_DECLARATION_ERRNO | |
27 extern int errno; | |
28 #endif | |
29 #ifdef HAVE_STRING_H | |
30 #include <string.h> | |
31 #endif | |
32 #ifdef HAVE_STDLIB_H | |
33 #include <stdlib.h> | |
34 #endif | |
35 | |
36 #include "safe-ctype.h" | |
37 #include <process.h> | |
38 | |
39 /* The structure we keep in obj->sysdep. */ | |
40 | |
41 #define PEX_MSDOS_FILE_COUNT 3 | |
42 | |
43 #define PEX_MSDOS_FD_OFFSET 10 | |
44 | |
45 struct pex_msdos | |
46 { | |
47 /* An array of file names. We refer to these using file descriptors | |
48 of 10 + array index. */ | |
49 const char *files[PEX_MSDOS_FILE_COUNT]; | |
50 /* Exit statuses of programs which have been run. */ | |
51 int *statuses; | |
52 }; | |
53 | |
54 static int pex_msdos_open (struct pex_obj *, const char *, int); | |
55 static int pex_msdos_open (struct pex_obj *, const char *, int); | |
56 static int pex_msdos_fdindex (struct pex_msdos *, int); | |
57 static pid_t pex_msdos_exec_child (struct pex_obj *, int, const char *, | |
58 char * const *, char * const *, | |
59 int, int, int, int, | |
60 int, const char **, int *); | |
61 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
|
62 static pid_t pex_msdos_wait (struct pex_obj *, pid_t, int *, struct pex_time *, |
0 | 63 int, const char **, int *); |
64 static void pex_msdos_cleanup (struct pex_obj *); | |
65 | |
66 /* The list of functions we pass to the common routines. */ | |
67 | |
68 const struct pex_funcs funcs = | |
69 { | |
70 pex_msdos_open, | |
71 pex_msdos_open, | |
72 pex_msdos_exec_child, | |
73 pex_msdos_close, | |
74 pex_msdos_wait, | |
75 NULL, /* pipe */ | |
76 NULL, /* fdopenr */ | |
77 NULL, /* fdopenw */ | |
78 pex_msdos_cleanup | |
79 }; | |
80 | |
81 /* Return a newly initialized pex_obj structure. */ | |
82 | |
83 struct pex_obj * | |
84 pex_init (int flags, const char *pname, const char *tempbase) | |
85 { | |
86 struct pex_obj *ret; | |
87 int i; | |
88 | |
89 /* MSDOS does not support pipes. */ | |
90 flags &= ~ PEX_USE_PIPES; | |
91 | |
92 ret = pex_init_common (flags, pname, tempbase, funcs); | |
93 | |
94 ret->sysdep = XNEW (struct pex_msdos); | |
95 for (i = 0; i < PEX_MSDOS_FILE_COUNT; ++i) | |
96 ret->files[i] = NULL; | |
97 ret->statuses = NULL; | |
98 | |
99 return ret; | |
100 } | |
101 | |
102 /* Open a file. FIXME: We ignore the binary argument, since we have | |
103 no way to handle it. */ | |
104 | |
105 static int | |
106 pex_msdos_open (struct pex_obj *obj, const char *name, | |
107 int binary ATTRIBUTE_UNUSED) | |
108 { | |
109 struct pex_msdos *ms; | |
110 int i; | |
111 | |
112 ms = (struct pex_msdos *) obj->sysdep; | |
113 | |
114 for (i = 0; i < PEX_MSDOS_FILE_COUNT; ++i) | |
115 { | |
116 if (ms->files[i] == NULL) | |
117 { | |
118 ms->files[i] = xstrdup (name); | |
119 return i + PEX_MSDOS_FD_OFFSET; | |
120 } | |
121 } | |
122 | |
123 abort (); | |
124 } | |
125 | |
126 /* Get the index into msdos->files associated with an open file | |
127 descriptor. */ | |
128 | |
129 static int | |
130 pex_msdos_fdindex (struct pex_msdos *ms, int fd) | |
131 { | |
132 fd -= PEX_MSDOS_FD_OFFSET; | |
133 if (fd < 0 || fd >= PEX_MSDOS_FILE_COUNT || ms->files[fd] == NULL) | |
134 abort (); | |
135 return fd; | |
136 } | |
137 | |
138 | |
139 /* Close a file. */ | |
140 | |
141 static int | |
142 pex_msdos_close (struct pex_obj *obj, int fd) | |
143 { | |
144 struct pex_msdos *ms; | |
145 int fdinex; | |
146 | |
147 ms = (struct pex_msdos *) obj->sysdep; | |
148 fdindex = pe_msdos_fdindex (ms, fd); | |
149 free (ms->files[fdindex]); | |
150 ms->files[fdindex] = NULL; | |
151 } | |
152 | |
153 /* Execute a child. */ | |
154 | |
155 static pid_t | |
156 pex_msdos_exec_child (struct pex_obj *obj, int flags, const char *executable, | |
157 char * const * argv, char * const * env, int in, int out, | |
158 int toclose ATTRIBUTE_UNUSED, | |
159 int errdes ATTRIBUTE_UNUSED, const char **errmsg, | |
160 int *err) | |
161 { | |
162 struct pex_msdos *ms; | |
163 char *temp_base; | |
164 int temp_base_allocated; | |
165 char *rf; | |
166 int inindex; | |
167 char *infile; | |
168 int outindex; | |
169 char *outfile; | |
170 char *scmd; | |
171 FILE *argfile; | |
172 int i; | |
173 int status; | |
174 | |
175 ms = (struct pex_msdos *) obj->sysdep; | |
176 | |
177 /* FIXME: I don't know how to redirect stderr, so we ignore ERRDES | |
178 and PEX_STDERR_TO_STDOUT. */ | |
179 | |
180 temp_base = obj->temp_base; | |
181 if (temp_base != NULL) | |
182 temp_base_allocated = 0; | |
183 else | |
184 { | |
185 temp_base = choose_temp_base (); | |
186 temp_base_allocated = 1; | |
187 } | |
188 | |
189 rf = concat (temp_base, ".gp", NULL); | |
190 | |
191 if (temp_base_allocated) | |
192 free (temp_base); | |
193 | |
194 if (in == STDIN_FILE_NO) | |
195 { | |
196 inindex = -1; | |
197 infile = ""; | |
198 } | |
199 else | |
200 { | |
201 inindex = pex_msdos_fdindex (ms, in); | |
202 infile = ms->files[inindex]; | |
203 } | |
204 | |
205 if (out == STDOUT_FILE_NO) | |
206 { | |
207 outindex = -1; | |
208 outfile = ""; | |
209 } | |
210 else | |
211 { | |
212 outindex = pex_msdos_fdindex (ms, out); | |
213 outfile = ms->files[outindex]; | |
214 } | |
215 | |
216 scmd = XNEWVEC (char, strlen (program) | |
217 + ((flags & PEXECUTE_SEARCH) != 0 ? 4 : 0) | |
218 + strlen (rf) | |
219 + strlen (infile) | |
220 + strlen (outfile) | |
221 + 10); | |
222 sprintf (scmd, "%s%s @%s%s%s%s%s", | |
223 program, | |
224 (flags & PEXECUTE_SEARCH) != 0 ? ".exe" : "", | |
225 rf, | |
226 inindex != -1 ? " <" : "", | |
227 infile, | |
228 outindex != -1 ? " >" : "", | |
229 outfile); | |
230 | |
231 argfile = fopen (rf, "w"); | |
232 if (argfile == NULL) | |
233 { | |
234 *err = errno; | |
235 free (scmd); | |
236 free (rf); | |
237 *errmsg = "cannot open temporary command file"; | |
238 return (pid_t) -1; | |
239 } | |
240 | |
241 for (i = 1; argv[i] != NULL; ++i) | |
242 { | |
243 char *p; | |
244 | |
245 for (p = argv[i]; *p != '\0'; ++p) | |
246 { | |
247 if (*p == '"' || *p == '\'' || *p == '\\' || ISSPACE (*p)) | |
248 putc ('\\', argfile); | |
249 putc (*p, argfile); | |
250 } | |
251 putc ('\n', argfile); | |
252 } | |
253 | |
254 fclose (argfile); | |
255 | |
256 status = system (scmd); | |
257 | |
258 if (status == -1) | |
259 { | |
260 *err = errno; | |
261 remove (rf); | |
262 free (scmd); | |
263 free (rf); | |
264 *errmsg = "system"; | |
265 return (pid_t) -1; | |
266 } | |
267 | |
268 remove (rf); | |
269 free (scmd); | |
270 free (rf); | |
271 | |
272 /* Save the exit status for later. When we are called, obj->count | |
273 is the number of children which have executed before this | |
274 one. */ | |
275 ms->statuses = XRESIZEVEC(int, ms->statuses, obj->count + 1); | |
276 ms->statuses[obj->count] = status; | |
277 | |
278 return (pid_t) obj->count; | |
279 } | |
280 | |
281 /* Wait for a child process to complete. Actually the child process | |
282 has already completed, and we just need to return the exit | |
283 status. */ | |
284 | |
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
285 static pid_t |
0 | 286 pex_msdos_wait (struct pex_obj *obj, pid_t pid, int *status, |
287 struct pex_time *time, int done ATTRIBUTE_UNUSED, | |
288 const char **errmsg ATTRIBUTE_UNUSED, | |
289 int *err ATTRIBUTE_UNUSED) | |
290 { | |
291 struct pex_msdos *ms; | |
292 | |
293 ms = (struct pex_msdos *) obj->sysdep; | |
294 | |
295 if (time != NULL) | |
296 memset (time, 0, sizeof *time); | |
297 | |
298 *status = ms->statuses[pid]; | |
299 | |
300 return 0; | |
301 } | |
302 | |
303 /* Clean up the pex_msdos structure. */ | |
304 | |
305 static void | |
306 pex_msdos_cleanup (struct pex_obj *obj) | |
307 { | |
308 struct pex_msdos *ms; | |
309 int i; | |
310 | |
311 ms = (struct pex_msdos *) obj->sysdep; | |
312 for (i = 0; i < PEX_MSDOS_FILE_COUNT; ++i) | |
313 if (msdos->files[i] != NULL) | |
314 free (msdos->files[i]); | |
315 if (msdos->statuses != NULL) | |
316 free (msdos->statuses); | |
317 free (msdos); | |
318 obj->sysdep = NULL; | |
319 } |