File: | src/usr.bin/cvs/cvs.c |
Warning: | line 216, column 7 Although the value stored to 'envstr' is used in the enclosing expression, the value is never actually read from 'envstr' |
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1 | /* $OpenBSD: cvs.c,v 1.160 2021/01/27 07:18:16 deraadt Exp $ */ |
2 | /* |
3 | * Copyright (c) 2006, 2007 Joris Vink <joris@openbsd.org> |
4 | * Copyright (c) 2004 Jean-Francois Brousseau <jfb@openbsd.org> |
5 | * All rights reserved. |
6 | * |
7 | * Redistribution and use in source and binary forms, with or without |
8 | * modification, are permitted provided that the following conditions |
9 | * are met: |
10 | * |
11 | * 1. Redistributions of source code must retain the above copyright |
12 | * notice, this list of conditions and the following disclaimer. |
13 | * 2. The name of the author may not be used to endorse or promote products |
14 | * derived from this software without specific prior written permission. |
15 | * |
16 | * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, |
17 | * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY |
18 | * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL |
19 | * THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, |
20 | * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, |
21 | * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; |
22 | * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, |
23 | * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR |
24 | * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF |
25 | * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
26 | */ |
27 | |
28 | #include <sys/stat.h> |
29 | |
30 | #include <ctype.h> |
31 | #include <errno(*__errno()).h> |
32 | #include <pwd.h> |
33 | #include <stdlib.h> |
34 | #include <string.h> |
35 | #include <time.h> |
36 | #include <unistd.h> |
37 | #include <err.h> |
38 | |
39 | #include "cvs.h" |
40 | #include "remote.h" |
41 | #include "hash.h" |
42 | |
43 | extern char *__progname; |
44 | |
45 | /* verbosity level: 0 = really quiet, 1 = quiet, 2 = verbose */ |
46 | int verbosity = 2; |
47 | |
48 | /* compression level used with zlib, 0 meaning no compression taking place */ |
49 | int cvs_compress = 0; |
50 | int cvs_readrc = 1; /* read .cvsrc on startup */ |
51 | int cvs_trace = 0; |
52 | int cvs_nolog = 0; |
53 | int cvs_readonly = 0; |
54 | int cvs_readonlyfs = 0; |
55 | int cvs_nocase = 0; /* set to 1 to disable filename case sensitivity */ |
56 | int cvs_noexec = 0; /* set to 1 to disable disk operations (-n option) */ |
57 | int cvs_cmdop; |
58 | int cvs_umask = CVS_UMASK_DEFAULT002; |
59 | int cvs_server_active = 0; |
60 | |
61 | char *cvs_tagname = NULL((void *)0); |
62 | char *cvs_defargs; /* default global arguments from .cvsrc */ |
63 | char *cvs_rootstr; |
64 | char *cvs_rsh = CVS_RSH_DEFAULT"ssh"; |
65 | char *cvs_editor = CVS_EDITOR_DEFAULT"vi"; |
66 | char *cvs_homedir = NULL((void *)0); |
67 | char *cvs_tmpdir = CVS_TMPDIR_DEFAULT"/tmp"; |
68 | |
69 | struct cvsroot *current_cvsroot = NULL((void *)0); |
70 | struct cvs_cmd *cmdp; /* struct of command we are running */ |
71 | |
72 | int cvs_getopt(int, char **); |
73 | __dead__attribute__((__noreturn__)) void usage(void); |
74 | static void cvs_read_rcfile(void); |
75 | |
76 | struct cvs_varhead cvs_variables; |
77 | |
78 | struct wklhead temp_files; |
79 | |
80 | void sighandler(int); |
81 | volatile sig_atomic_t cvs_quit = 0; |
82 | volatile sig_atomic_t sig_received = 0; |
83 | |
84 | extern CVSENTRIES *current_list; |
85 | |
86 | struct hash_table created_directories; |
87 | struct hash_table created_cvs_directories; |
88 | |
89 | void |
90 | sighandler(int sig) |
91 | { |
92 | sig_received = sig; |
93 | |
94 | switch (sig) { |
95 | case SIGINT2: |
96 | case SIGTERM15: |
97 | case SIGPIPE13: |
98 | cvs_quit = 1; |
99 | break; |
100 | default: |
101 | break; |
102 | } |
103 | } |
104 | |
105 | void |
106 | cvs_cleanup(void) |
107 | { |
108 | cvs_log(LP_TRACE4, "cvs_cleanup: removing locks"); |
109 | worklist_run(&repo_locks, worklist_unlink); |
110 | |
111 | cvs_log(LP_TRACE4, "cvs_cleanup: removing temp files"); |
112 | worklist_run(&temp_files, worklist_unlink); |
113 | |
114 | if (cvs_server_path != NULL((void *)0)) { |
115 | if (cvs_rmdir(cvs_server_path) == -1) |
116 | cvs_log(LP_ERR1, |
117 | "warning: failed to remove server directory: %s", |
118 | cvs_server_path); |
119 | free(cvs_server_path); |
120 | cvs_server_path = NULL((void *)0); |
121 | } |
122 | |
123 | if (current_list != NULL((void *)0)) |
124 | cvs_ent_close(current_list, ENT_SYNC1); |
125 | } |
126 | |
127 | __dead__attribute__((__noreturn__)) void |
128 | usage(void) |
129 | { |
130 | (void)fprintf(stderr(&__sF[2]), |
131 | "usage: %s [-flnQqRrtvw] [-d root] [-e editor] [-s var=val]\n" |
132 | " [-T tmpdir] [-z level] command ...\n", __progname); |
133 | exit(1); |
134 | } |
135 | |
136 | int |
137 | cvs_build_cmd(char ***cmd_argv, char **argv, int argc) |
138 | { |
139 | int cmd_argc, i, cur; |
140 | char *cp, *linebuf, *lp; |
141 | |
142 | if (cmdp->cmd_defargs == NULL((void *)0)) { |
143 | *cmd_argv = argv; |
144 | return argc; |
145 | } |
146 | |
147 | cur = argc + 2; |
148 | cmd_argc = 0; |
149 | *cmd_argv = xcalloc(cur, sizeof(char *)); |
150 | (*cmd_argv)[cmd_argc++] = argv[0]; |
151 | |
152 | linebuf = xstrdup(cmdp->cmd_defargs); |
153 | for (lp = linebuf; lp != NULL((void *)0);) { |
154 | cp = strsep(&lp, " \t\b\f\n\r\t\v"); |
155 | if (cp == NULL((void *)0)) |
156 | break; |
157 | if (*cp == '\0') |
158 | continue; |
159 | |
160 | if (cmd_argc == cur) { |
161 | cur += 8; |
162 | *cmd_argv = xreallocarray(*cmd_argv, cur, |
163 | sizeof(char *)); |
164 | } |
165 | |
166 | (*cmd_argv)[cmd_argc++] = cp; |
167 | } |
168 | |
169 | if (cmd_argc + argc > cur) { |
170 | cur = cmd_argc + argc + 1; |
171 | *cmd_argv = xreallocarray(*cmd_argv, cur, |
172 | sizeof(char *)); |
173 | } |
174 | |
175 | for (i = 1; i < argc; i++) |
176 | (*cmd_argv)[cmd_argc++] = argv[i]; |
177 | |
178 | (*cmd_argv)[cmd_argc] = NULL((void *)0); |
179 | |
180 | return cmd_argc; |
181 | } |
182 | |
183 | int |
184 | main(int argc, char **argv) |
185 | { |
186 | char *envstr, **cmd_argv, **targv; |
187 | int i, ret, cmd_argc; |
188 | struct passwd *pw; |
189 | struct stat st; |
190 | char fpath[PATH_MAX1024]; |
191 | |
192 | if (pledge("stdio rpath wpath cpath fattr getpw proc exec", NULL((void *)0)) == -1) |
193 | err(1, "pledge"); |
194 | |
195 | tzset(); |
196 | |
197 | TAILQ_INIT(&cvs_variables)do { (&cvs_variables)->tqh_first = ((void *)0); (& cvs_variables)->tqh_last = &(&cvs_variables)->tqh_first ; } while (0); |
198 | SLIST_INIT(&repo_locks){ ((&repo_locks)->slh_first) = ((void *)0); }; |
199 | SLIST_INIT(&temp_files){ ((&temp_files)->slh_first) = ((void *)0); }; |
200 | |
201 | hash_table_init(&created_directories, 100); |
202 | hash_table_init(&created_cvs_directories, 100); |
203 | |
204 | /* check environment so command-line options override it */ |
205 | if ((envstr = getenv("CVS_RSH")) != NULL((void *)0)) |
206 | cvs_rsh = envstr; |
207 | |
208 | if (((envstr = getenv("CVSEDITOR")) != NULL((void *)0)) || |
209 | ((envstr = getenv("VISUAL")) != NULL((void *)0)) || |
210 | ((envstr = getenv("EDITOR")) != NULL((void *)0))) |
211 | cvs_editor = envstr; |
212 | |
213 | if ((envstr = getenv("CVSREAD")) != NULL((void *)0)) |
214 | cvs_readonly = 1; |
215 | |
216 | if ((envstr = getenv("CVSREADONLYFS")) != NULL((void *)0)) { |
Although the value stored to 'envstr' is used in the enclosing expression, the value is never actually read from 'envstr' | |
217 | cvs_readonlyfs = 1; |
218 | cvs_nolog = 1; |
219 | } |
220 | |
221 | if ((cvs_homedir = getenv("HOME")) == NULL((void *)0)) { |
222 | if ((pw = getpwuid(getuid())) != NULL((void *)0)) |
223 | cvs_homedir = pw->pw_dir; |
224 | } |
225 | |
226 | if ((envstr = getenv("TMPDIR")) != NULL((void *)0)) |
227 | cvs_tmpdir = envstr; |
228 | |
229 | ret = cvs_getopt(argc, argv); |
230 | |
231 | argc -= ret; |
232 | argv += ret; |
233 | if (argc == 0) |
234 | usage(); |
235 | |
236 | cmdp = cvs_findcmd(argv[0]); |
237 | if (cmdp == NULL((void *)0)) { |
238 | fprintf(stderr(&__sF[2]), "Unknown command: `%s'\n\n", argv[0]); |
239 | fprintf(stderr(&__sF[2]), "CVS commands are:\n"); |
240 | for (i = 0; cvs_cdt[i] != NULL((void *)0); i++) |
241 | fprintf(stderr(&__sF[2]), "\t%-16s%s\n", |
242 | cvs_cdt[i]->cmd_name, cvs_cdt[i]->cmd_descr); |
243 | exit(1); |
244 | } |
245 | |
246 | /* |
247 | * check the tmp dir, either specified through |
248 | * the environment variable TMPDIR, or via |
249 | * the global option -T <dir> |
250 | */ |
251 | if (stat(cvs_tmpdir, &st) == -1) |
252 | fatal("stat failed on `%s': %s", cvs_tmpdir, strerror(errno(*__errno()))); |
253 | else if (!S_ISDIR(st.st_mode)((st.st_mode & 0170000) == 0040000)) |
254 | fatal("`%s' is not valid temporary directory", cvs_tmpdir); |
255 | |
256 | if (cvs_readrc == 1 && cvs_homedir != NULL((void *)0)) { |
257 | cvs_read_rcfile(); |
258 | |
259 | if (cvs_defargs != NULL((void *)0)) { |
260 | if ((targv = cvs_makeargv(cvs_defargs, &i)) == NULL((void *)0)) |
261 | fatal("failed to load default arguments to %s", |
262 | __progname); |
263 | |
264 | cvs_getopt(i, targv); |
265 | cvs_freeargv(targv, i); |
266 | free(targv); |
267 | } |
268 | } |
269 | |
270 | /* setup signal handlers */ |
271 | signal(SIGTERM15, sighandler); |
272 | signal(SIGINT2, sighandler); |
273 | signal(SIGHUP1, sighandler); |
274 | signal(SIGABRT6, sighandler); |
275 | signal(SIGALRM14, sighandler); |
276 | signal(SIGPIPE13, sighandler); |
277 | |
278 | cvs_cmdop = cmdp->cmd_op; |
279 | |
280 | cmd_argc = cvs_build_cmd(&cmd_argv, argv, argc); |
281 | |
282 | cvs_file_init(); |
283 | |
284 | if (cvs_cmdop == CVS_OP_SERVER20) { |
285 | cmdp->cmd(cmd_argc, cmd_argv); |
286 | cvs_cleanup(); |
287 | return (0); |
288 | } |
289 | |
290 | cvs_umask = umask(0); |
291 | umask(cvs_umask); |
292 | |
293 | if ((current_cvsroot = cvsroot_get(".")) == NULL((void *)0)) { |
294 | cvs_log(LP_ERR1, |
295 | "No CVSROOT specified! Please use the '-d' option"); |
296 | fatal("or set the CVSROOT environment variable."); |
297 | } |
298 | |
299 | if (cvsroot_is_remote()) { |
300 | cmdp->cmd(cmd_argc, cmd_argv); |
301 | cvs_cleanup(); |
302 | return (0); |
303 | } |
304 | |
305 | (void)xsnprintf(fpath, sizeof(fpath), "%s/%s", |
306 | current_cvsroot->cr_dir, CVS_PATH_ROOT"CVSROOT"); |
307 | |
308 | if (stat(fpath, &st) == -1 && cvs_cmdop != CVS_OP_INIT12) { |
309 | if (errno(*__errno()) == ENOENT2) |
310 | fatal("repository '%s' does not exist", |
311 | current_cvsroot->cr_dir); |
312 | else |
313 | fatal("%s: %s", current_cvsroot->cr_dir, |
314 | strerror(errno(*__errno()))); |
315 | } else { |
316 | if (!S_ISDIR(st.st_mode)((st.st_mode & 0170000) == 0040000)) |
317 | fatal("'%s' is not a directory", |
318 | current_cvsroot->cr_dir); |
319 | } |
320 | |
321 | if (cvs_cmdop != CVS_OP_INIT12) { |
322 | cvs_parse_configfile(); |
323 | cvs_parse_modules(); |
324 | } |
325 | |
326 | cmdp->cmd(cmd_argc, cmd_argv); |
327 | cvs_cleanup(); |
328 | |
329 | return (0); |
330 | } |
331 | |
332 | int |
333 | cvs_getopt(int argc, char **argv) |
334 | { |
335 | int ret; |
336 | char *ep; |
337 | const char *errstr; |
338 | |
339 | while ((ret = getopt(argc, argv, "b:d:e:flnQqRrs:T:tvwxz:")) != -1) { |
340 | switch (ret) { |
341 | case 'b': |
342 | /* |
343 | * We do not care about the bin directory for RCS files |
344 | * as this program has no dependencies on RCS programs, |
345 | * so it is only here for backwards compatibility. |
346 | */ |
347 | cvs_log(LP_NOTICE0, "the -b argument is obsolete"); |
348 | break; |
349 | case 'd': |
350 | cvs_rootstr = optarg; |
351 | break; |
352 | case 'e': |
353 | cvs_editor = optarg; |
354 | break; |
355 | case 'f': |
356 | cvs_readrc = 0; |
357 | break; |
358 | case 'l': |
359 | cvs_nolog = 1; |
360 | break; |
361 | case 'n': |
362 | cvs_noexec = 1; |
363 | cvs_nolog = 1; |
364 | break; |
365 | case 'Q': |
366 | verbosity = 0; |
367 | break; |
368 | case 'q': |
369 | if (verbosity > 1) |
370 | verbosity = 1; |
371 | break; |
372 | case 'R': |
373 | cvs_readonlyfs = 1; |
374 | cvs_nolog = 1; |
375 | break; |
376 | case 'r': |
377 | cvs_readonly = 1; |
378 | break; |
379 | case 's': |
380 | ep = strchr(optarg, '='); |
381 | if (ep == NULL((void *)0)) { |
382 | cvs_log(LP_ERR1, "no = in variable assignment"); |
383 | exit(1); |
384 | } |
385 | *(ep++) = '\0'; |
386 | if (cvs_var_set(optarg, ep) < 0) |
387 | exit(1); |
388 | break; |
389 | case 'T': |
390 | cvs_tmpdir = optarg; |
391 | break; |
392 | case 't': |
393 | cvs_trace = 1; |
394 | break; |
395 | case 'v': |
396 | printf("%s\n", CVS_VERSION"OpenCVS 4.5"); |
397 | exit(0); |
398 | /* NOTREACHED */ |
399 | case 'w': |
400 | cvs_readonly = 0; |
401 | break; |
402 | case 'x': |
403 | /* |
404 | * Kerberos encryption support, kept for compatibility |
405 | */ |
406 | break; |
407 | case 'z': |
408 | cvs_compress = strtonum(optarg, 0, 9, &errstr); |
409 | if (errstr != NULL((void *)0)) |
410 | fatal("cvs_compress: %s", errstr); |
411 | break; |
412 | default: |
413 | usage(); |
414 | /* NOTREACHED */ |
415 | } |
416 | } |
417 | |
418 | ret = optind; |
419 | optind = 1; |
420 | optreset = 1; /* for next call */ |
421 | |
422 | return (ret); |
423 | } |
424 | |
425 | /* |
426 | * cvs_read_rcfile() |
427 | * |
428 | * Read the CVS `.cvsrc' file in the user's home directory. If the file |
429 | * exists, it should contain a list of arguments that should always be given |
430 | * implicitly to the specified commands. |
431 | */ |
432 | static void |
433 | cvs_read_rcfile(void) |
434 | { |
435 | char rcpath[PATH_MAX1024], *buf, *lbuf, *lp, *p; |
436 | int cmd_parsed, cvs_parsed, i, linenum; |
437 | size_t len, pos; |
438 | struct cvs_cmd *tcmdp; |
439 | FILE *fp; |
440 | |
441 | linenum = 0; |
442 | |
443 | i = snprintf(rcpath, PATH_MAX1024, "%s/%s", cvs_homedir, CVS_PATH_RC".cvsrc"); |
444 | if (i < 0 || i >= PATH_MAX1024) { |
445 | cvs_log(LP_ERRNO2, "%s", rcpath); |
446 | return; |
447 | } |
448 | |
449 | fp = fopen(rcpath, "r"); |
450 | if (fp == NULL((void *)0)) { |
451 | if (errno(*__errno()) != ENOENT2) |
452 | cvs_log(LP_NOTICE0, "failed to open `%s': %s", rcpath, |
453 | strerror(errno(*__errno()))); |
454 | return; |
455 | } |
456 | |
457 | cmd_parsed = cvs_parsed = 0; |
458 | lbuf = NULL((void *)0); |
459 | while ((buf = fgetln(fp, &len)) != NULL((void *)0)) { |
460 | if (buf[len - 1] == '\n') { |
461 | buf[len - 1] = '\0'; |
462 | } else { |
463 | lbuf = xmalloc(len + 1); |
464 | memcpy(lbuf, buf, len); |
465 | lbuf[len] = '\0'; |
466 | buf = lbuf; |
467 | } |
468 | |
469 | linenum++; |
470 | |
471 | /* skip any whitespaces */ |
472 | p = buf; |
473 | while (*p == ' ') |
474 | p++; |
475 | |
476 | /* |
477 | * Allow comments. |
478 | * GNU cvs stops parsing a line if it encounters a \t |
479 | * in front of a command, stick at this behaviour for |
480 | * compatibility. |
481 | */ |
482 | if (*p == '#' || *p == '\t') |
483 | continue; |
484 | |
485 | pos = strcspn(p, " \t"); |
486 | if (pos == strlen(p)) { |
487 | lp = NULL((void *)0); |
488 | } else { |
489 | lp = p + pos; |
490 | *lp = '\0'; |
491 | } |
492 | |
493 | if (strcmp(p, "cvs") == 0 && !cvs_parsed) { |
494 | /* |
495 | * Global default options. In the case of cvs only, |
496 | * we keep the 'cvs' string as first argument because |
497 | * getopt() does not like starting at index 0 for |
498 | * argument processing. |
499 | */ |
500 | if (lp != NULL((void *)0)) { |
501 | *lp = ' '; |
502 | cvs_defargs = xstrdup(p); |
503 | } |
504 | cvs_parsed = 1; |
505 | } else { |
506 | tcmdp = cvs_findcmd(p); |
507 | if (tcmdp == NULL((void *)0) && verbosity == 2) |
508 | cvs_log(LP_NOTICE0, |
509 | "unknown command `%s' in `%s:%d'", |
510 | p, rcpath, linenum); |
511 | |
512 | if (tcmdp != cmdp || cmd_parsed) |
513 | continue; |
514 | |
515 | if (lp != NULL((void *)0)) { |
516 | lp++; |
517 | cmdp->cmd_defargs = xstrdup(lp); |
518 | } |
519 | cmd_parsed = 1; |
520 | } |
521 | } |
522 | free(lbuf); |
523 | |
524 | if (ferror(fp)(!__isthreaded ? (((fp)->_flags & 0x0040) != 0) : (ferror )(fp))) { |
525 | cvs_log(LP_NOTICE0, "failed to read line from `%s'", rcpath); |
526 | } |
527 | |
528 | (void)fclose(fp); |
529 | } |
530 | |
531 | /* |
532 | * cvs_var_set() |
533 | * |
534 | * Set the value of the variable <var> to <val>. If there is no such variable, |
535 | * a new entry is created, otherwise the old value is overwritten. |
536 | * Returns 0 on success, or -1 on failure. |
537 | */ |
538 | int |
539 | cvs_var_set(const char *var, const char *val) |
540 | { |
541 | const char *cp; |
542 | struct cvs_var *vp; |
543 | |
544 | if (var == NULL((void *)0) || *var == '\0') { |
545 | cvs_log(LP_ERR1, "no variable name"); |
546 | return (-1); |
547 | } |
548 | |
549 | /* sanity check on the name */ |
550 | for (cp = var; *cp != '\0'; cp++) |
551 | if (!isalnum((unsigned char)*cp) && (*cp != '_')) { |
552 | cvs_log(LP_ERR1, |
553 | "variable name `%s' contains invalid characters", |
554 | var); |
555 | return (-1); |
556 | } |
557 | |
558 | TAILQ_FOREACH(vp, &cvs_variables, cv_link)for((vp) = ((&cvs_variables)->tqh_first); (vp) != ((void *)0); (vp) = ((vp)->cv_link.tqe_next)) |
559 | if (strcmp(vp->cv_name, var) == 0) |
560 | break; |
561 | |
562 | if (vp == NULL((void *)0)) { |
563 | vp = xcalloc(1, sizeof(*vp)); |
564 | |
565 | vp->cv_name = xstrdup(var); |
566 | TAILQ_INSERT_TAIL(&cvs_variables, vp, cv_link)do { (vp)->cv_link.tqe_next = ((void *)0); (vp)->cv_link .tqe_prev = (&cvs_variables)->tqh_last; *(&cvs_variables )->tqh_last = (vp); (&cvs_variables)->tqh_last = & (vp)->cv_link.tqe_next; } while (0); |
567 | |
568 | } else /* free the previous value */ |
569 | free(vp->cv_val); |
570 | |
571 | vp->cv_val = xstrdup(val); |
572 | |
573 | return (0); |
574 | } |
575 | |
576 | /* |
577 | * cvs_var_unset() |
578 | * |
579 | * Remove any entry for the variable <var>. |
580 | * Returns 0 on success, or -1 on failure. |
581 | */ |
582 | int |
583 | cvs_var_unset(const char *var) |
584 | { |
585 | struct cvs_var *vp; |
586 | |
587 | TAILQ_FOREACH(vp, &cvs_variables, cv_link)for((vp) = ((&cvs_variables)->tqh_first); (vp) != ((void *)0); (vp) = ((vp)->cv_link.tqe_next)) |
588 | if (strcmp(vp->cv_name, var) == 0) { |
589 | TAILQ_REMOVE(&cvs_variables, vp, cv_link)do { if (((vp)->cv_link.tqe_next) != ((void *)0)) (vp)-> cv_link.tqe_next->cv_link.tqe_prev = (vp)->cv_link.tqe_prev ; else (&cvs_variables)->tqh_last = (vp)->cv_link.tqe_prev ; *(vp)->cv_link.tqe_prev = (vp)->cv_link.tqe_next; ; ; } while (0); |
590 | free(vp->cv_name); |
591 | free(vp->cv_val); |
592 | free(vp); |
593 | return (0); |
594 | } |
595 | |
596 | return (-1); |
597 | } |
598 | |
599 | /* |
600 | * cvs_var_get() |
601 | * |
602 | * Get the value associated with the variable <var>. Returns a pointer to the |
603 | * value string on success, or NULL if the variable does not exist. |
604 | */ |
605 | |
606 | const char * |
607 | cvs_var_get(const char *var) |
608 | { |
609 | struct cvs_var *vp; |
610 | |
611 | TAILQ_FOREACH(vp, &cvs_variables, cv_link)for((vp) = ((&cvs_variables)->tqh_first); (vp) != ((void *)0); (vp) = ((vp)->cv_link.tqe_next)) |
612 | if (strcmp(vp->cv_name, var) == 0) |
613 | return (vp->cv_val); |
614 | |
615 | return (NULL((void *)0)); |
616 | } |