Annotation of src/usr.bin/find/function.c, Revision 1.29
1.29 ! otto 1: /* $OpenBSD: function.c,v 1.28 2003/06/26 07:27:29 deraadt Exp $ */
1.4 deraadt 2:
1.1 deraadt 3: /*-
4: * Copyright (c) 1990, 1993
5: * The Regents of the University of California. All rights reserved.
6: *
7: * This code is derived from software contributed to Berkeley by
8: * Cimarron D. Taylor of the University of California, Berkeley.
9: *
10: * Redistribution and use in source and binary forms, with or without
11: * modification, are permitted provided that the following conditions
12: * are met:
13: * 1. Redistributions of source code must retain the above copyright
14: * notice, this list of conditions and the following disclaimer.
15: * 2. Redistributions in binary form must reproduce the above copyright
16: * notice, this list of conditions and the following disclaimer in the
17: * documentation and/or other materials provided with the distribution.
1.26 millert 18: * 3. Neither the name of the University nor the names of its contributors
1.1 deraadt 19: * may be used to endorse or promote products derived from this software
20: * without specific prior written permission.
21: *
22: * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
23: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
24: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
25: * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
26: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
27: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
28: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
29: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
30: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
31: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
32: * SUCH DAMAGE.
33: */
34:
35: #ifndef lint
36: /*static char sccsid[] = "from: @(#)function.c 8.1 (Berkeley) 6/6/93";*/
1.29 ! otto 37: static char rcsid[] = "$OpenBSD: function.c,v 1.28 2003/06/26 07:27:29 deraadt Exp $";
1.1 deraadt 38: #endif /* not lint */
39:
40: #include <sys/param.h>
41: #include <sys/ucred.h>
42: #include <sys/stat.h>
43: #include <sys/wait.h>
44: #include <sys/mount.h>
45:
1.7 tholo 46: #include <dirent.h>
1.1 deraadt 47: #include <err.h>
48: #include <errno.h>
1.15 millert 49: #include <fcntl.h>
1.1 deraadt 50: #include <fnmatch.h>
51: #include <fts.h>
52: #include <grp.h>
1.10 millert 53: #include <libgen.h>
1.1 deraadt 54: #include <pwd.h>
55: #include <stdio.h>
56: #include <stdlib.h>
57: #include <string.h>
58: #include <tzfile.h>
59: #include <unistd.h>
60:
61: #include "find.h"
1.28 deraadt 62: #include "extern.h"
1.1 deraadt 63:
64: #define COMPARE(a, b) { \
65: switch (plan->flags) { \
66: case F_EQUAL: \
67: return (a == b); \
68: case F_LESSTHAN: \
69: return (a < b); \
70: case F_GREATER: \
71: return (a > b); \
72: default: \
73: abort(); \
74: } \
75: }
76:
1.23 millert 77: static PLAN *palloc(enum ntype, int (*)(PLAN *, FTSENT *));
1.28 deraadt 78: static long find_parsenum(PLAN *plan, char *option, char *vp, char *endch);
79: static PLAN *palloc(enum ntype t, int (*f)(PLAN *, FTSENT *));
80:
81: int f_amin(PLAN *, FTSENT *);
82: int f_atime(PLAN *, FTSENT *);
83: int f_cmin(PLAN *, FTSENT *);
84: int f_ctime(PLAN *, FTSENT *);
85: int f_always_true(PLAN *, FTSENT *);
86: int f_empty(PLAN *, FTSENT *);
87: int f_exec(PLAN *, FTSENT *);
88: int f_execdir(PLAN *, FTSENT *);
89: int f_flags(PLAN *, FTSENT *);
90: int f_fstype(PLAN *, FTSENT *);
91: int f_group(PLAN *, FTSENT *);
92: int f_inum(PLAN *, FTSENT *);
93: int f_empty(PLAN *, FTSENT *);
94: int f_links(PLAN *, FTSENT *);
95: int f_ls(PLAN *, FTSENT *);
96: int f_maxdepth(PLAN *, FTSENT *);
97: int f_mindepth(PLAN *, FTSENT *);
98: int f_mtime(PLAN *, FTSENT *);
99: int f_mmin(PLAN *, FTSENT *);
100: int f_name(PLAN *, FTSENT *);
101: int f_iname(PLAN *, FTSENT *);
102: int f_newer(PLAN *, FTSENT *);
103: int f_anewer(PLAN *, FTSENT *);
104: int f_cnewer(PLAN *, FTSENT *);
105: int f_nogroup(PLAN *, FTSENT *);
106: int f_nouser(PLAN *, FTSENT *);
107: int f_path(PLAN *, FTSENT *);
108: int f_perm(PLAN *, FTSENT *);
109: int f_print(PLAN *, FTSENT *);
110: int f_print0(PLAN *, FTSENT *);
111: int f_prune(PLAN *, FTSENT *);
112: int f_size(PLAN *, FTSENT *);
113: int f_type(PLAN *, FTSENT *);
114: int f_user(PLAN *, FTSENT *);
115: int f_expr(PLAN *, FTSENT *);
116: int f_not(PLAN *, FTSENT *);
117: int f_or(PLAN *, FTSENT *);
1.1 deraadt 118:
1.9 millert 119: extern int dotfd;
120: extern time_t now;
121: extern FTS *tree;
122:
1.1 deraadt 123: /*
124: * find_parsenum --
125: * Parse a string of the form [+-]# and return the value.
126: */
127: static long
128: find_parsenum(plan, option, vp, endch)
129: PLAN *plan;
130: char *option, *vp, *endch;
131: {
132: long value;
133: char *endchar, *str; /* Pointer to character ending conversion. */
134:
135: /* Determine comparison from leading + or -. */
136: str = vp;
137: switch (*str) {
138: case '+':
139: ++str;
140: plan->flags = F_GREATER;
141: break;
142: case '-':
143: ++str;
144: plan->flags = F_LESSTHAN;
145: break;
146: default:
147: plan->flags = F_EQUAL;
148: break;
149: }
150:
151: /*
152: * Convert the string with strtol(). Note, if strtol() returns zero
153: * and endchar points to the beginning of the string we know we have
154: * a syntax error.
155: */
156: value = strtol(str, &endchar, 10);
157: if (value == 0 && endchar == str)
158: errx(1, "%s: %s: illegal numeric value", option, vp);
159: if (endchar[0] && (endch == NULL || endchar[0] != *endch))
160: errx(1, "%s: %s: illegal trailing character", option, vp);
161: if (endch)
162: *endch = endchar[0];
163: return (value);
164: }
165:
166: /*
167: * The value of n for the inode times (atime, ctime, and mtime) is a range,
168: * i.e. n matches from (n - 1) to n 24 hour periods. This interacts with
169: * -n, such that "-mtime -1" would be less than 0 days, which isn't what the
170: * user wanted. Correct so that -1 is "less than 1".
171: */
172: #define TIME_CORRECT(p, ttype) \
173: if ((p)->type == ttype && (p)->flags == F_LESSTHAN) \
1.17 millert 174: ++((p)->sec_data);
1.1 deraadt 175:
176: /*
1.11 deraadt 177: * -amin n functions --
178: *
179: * True if the difference between the file access time and the
180: * current time is n min periods.
181: */
182: int
183: f_amin(plan, entry)
184: PLAN *plan;
185: FTSENT *entry;
186: {
187: extern time_t now;
188:
189: COMPARE((now - entry->fts_statp->st_atime +
1.17 millert 190: 60 - 1) / 60, plan->sec_data);
1.11 deraadt 191: }
192:
193: PLAN *
1.28 deraadt 194: c_amin(char *arg, char ***ignored, int unused)
1.11 deraadt 195: {
196: PLAN *new;
197:
198: ftsoptions &= ~FTS_NOSTAT;
199:
200: new = palloc(N_AMIN, f_amin);
1.17 millert 201: new->sec_data = find_parsenum(new, "-amin", arg, NULL);
1.11 deraadt 202: TIME_CORRECT(new, N_AMIN);
203: return (new);
204: }
205:
206: /*
1.1 deraadt 207: * -atime n functions --
208: *
209: * True if the difference between the file access time and the
210: * current time is n 24 hour periods.
211: */
212: int
213: f_atime(plan, entry)
214: PLAN *plan;
215: FTSENT *entry;
216: {
217:
218: COMPARE((now - entry->fts_statp->st_atime +
1.17 millert 219: SECSPERDAY - 1) / SECSPERDAY, plan->sec_data);
1.1 deraadt 220: }
221:
222: PLAN *
1.28 deraadt 223: c_atime(char *arg, char ***ignored, int unused)
1.1 deraadt 224: {
225: PLAN *new;
226:
227: ftsoptions &= ~FTS_NOSTAT;
228:
229: new = palloc(N_ATIME, f_atime);
1.17 millert 230: new->sec_data = find_parsenum(new, "-atime", arg, NULL);
1.1 deraadt 231: TIME_CORRECT(new, N_ATIME);
232: return (new);
233: }
1.11 deraadt 234:
235: /*
236: * -cmin n functions --
237: *
238: * True if the difference between the last change of file
239: * status information and the current time is n min periods.
240: */
241: int
242: f_cmin(plan, entry)
243: PLAN *plan;
244: FTSENT *entry;
245: {
246: extern time_t now;
247:
248: COMPARE((now - entry->fts_statp->st_ctime +
1.17 millert 249: 60 - 1) / 60, plan->sec_data);
1.11 deraadt 250: }
251:
252: PLAN *
1.28 deraadt 253: c_cmin(char *arg, char ***ignored, int unused)
1.11 deraadt 254: {
255: PLAN *new;
256:
257: ftsoptions &= ~FTS_NOSTAT;
258:
259: new = palloc(N_CMIN, f_cmin);
1.17 millert 260: new->sec_data = find_parsenum(new, "-cmin", arg, NULL);
1.11 deraadt 261: TIME_CORRECT(new, N_CMIN);
262: return (new);
263: }
264:
1.1 deraadt 265: /*
266: * -ctime n functions --
267: *
268: * True if the difference between the last change of file
269: * status information and the current time is n 24 hour periods.
270: */
271: int
272: f_ctime(plan, entry)
273: PLAN *plan;
274: FTSENT *entry;
275: {
276:
277: COMPARE((now - entry->fts_statp->st_ctime +
1.17 millert 278: SECSPERDAY - 1) / SECSPERDAY, plan->sec_data);
1.1 deraadt 279: }
280:
281: PLAN *
1.28 deraadt 282: c_ctime(char *arg, char ***ignored, int unused)
1.1 deraadt 283: {
284: PLAN *new;
285:
286: ftsoptions &= ~FTS_NOSTAT;
287:
288: new = palloc(N_CTIME, f_ctime);
1.17 millert 289: new->sec_data = find_parsenum(new, "-ctime", arg, NULL);
1.1 deraadt 290: TIME_CORRECT(new, N_CTIME);
291: return (new);
292: }
293:
294: /*
295: * -depth functions --
296: *
297: * Always true, causes descent of the directory hierarchy to be done
298: * so that all entries in a directory are acted on before the directory
299: * itself.
300: */
301: int
302: f_always_true(plan, entry)
303: PLAN *plan;
304: FTSENT *entry;
305: {
306: return (1);
307: }
308:
309: PLAN *
1.28 deraadt 310: c_depth(char *ignore, char ***ignored, int unused)
1.1 deraadt 311: {
312: isdepth = 1;
313:
314: return (palloc(N_DEPTH, f_always_true));
315: }
316:
1.7 tholo 317: /*
318: * -empty functions --
319: *
320: * True if the file or directory is empty
321: */
322: int
323: f_empty(plan, entry)
324: PLAN *plan;
325: FTSENT *entry;
326: {
327: if (S_ISREG(entry->fts_statp->st_mode) && entry->fts_statp->st_size == 0)
328: return (1);
329: if (S_ISDIR(entry->fts_statp->st_mode)) {
330: struct dirent *dp;
331: int empty;
332: DIR *dir;
333:
334: empty = 1;
335: dir = opendir(entry->fts_accpath);
336: if (dir == NULL)
337: err(1, "%s", entry->fts_accpath);
338: for (dp = readdir(dir); dp; dp = readdir(dir))
339: if (dp->d_name[0] != '.' ||
340: (dp->d_name[1] != '\0' &&
341: (dp->d_name[1] != '.' || dp->d_name[2] != '\0'))) {
342: empty = 0;
343: break;
344: }
345: closedir(dir);
346: return (empty);
347: }
348: return (0);
349: }
350:
351: PLAN *
1.28 deraadt 352: c_empty(char *ignore, char ***ignored, int unused)
1.7 tholo 353: {
354: ftsoptions &= ~FTS_NOSTAT;
355:
356: return (palloc(N_EMPTY, f_empty));
357: }
358:
1.1 deraadt 359: /*
360: * [-exec | -ok] utility [arg ... ] ; functions --
361: *
362: * True if the executed utility returns a zero value as exit status.
363: * The end of the primary expression is delimited by a semicolon. If
364: * "{}" occurs anywhere, it gets replaced by the current pathname.
365: * The current directory for the execution of utility is the same as
366: * the current directory when the find utility was started.
367: *
368: * The primary -ok is different in that it requests affirmation of the
369: * user before executing the utility.
370: */
371: int
372: f_exec(plan, entry)
1.21 mpech 373: PLAN *plan;
1.1 deraadt 374: FTSENT *entry;
375: {
1.21 mpech 376: int cnt;
1.1 deraadt 377: pid_t pid;
378: int status;
379:
380: for (cnt = 0; plan->e_argv[cnt]; ++cnt)
381: if (plan->e_len[cnt])
382: brace_subst(plan->e_orig[cnt], &plan->e_argv[cnt],
383: entry->fts_path, plan->e_len[cnt]);
384:
385: if (plan->flags == F_NEEDOK && !queryuser(plan->e_argv))
386: return (0);
387:
388: /* don't mix output of command with find output */
389: fflush(stdout);
390: fflush(stderr);
391:
392: switch (pid = vfork()) {
393: case -1:
394: err(1, "fork");
395: /* NOTREACHED */
396: case 0:
397: if (fchdir(dotfd)) {
398: warn("chdir");
399: _exit(1);
400: }
401: execvp(plan->e_argv[0], plan->e_argv);
402: warn("%s", plan->e_argv[0]);
403: _exit(1);
404: }
405: pid = waitpid(pid, &status, 0);
406: return (pid != -1 && WIFEXITED(status) && !WEXITSTATUS(status));
407: }
408:
409: /*
410: * c_exec --
411: * build three parallel arrays, one with pointers to the strings passed
412: * on the command line, one with (possibly duplicated) pointers to the
413: * argv array, and one with integer values that are lengths of the
414: * strings, but also flags meaning that the string has to be massaged.
415: */
416: PLAN *
1.28 deraadt 417: c_exec(char *unused, char ***argvp, int isok)
1.1 deraadt 418: {
419: PLAN *new; /* node returned */
1.21 mpech 420: int cnt;
421: char **argv, **ap, *p;
1.1 deraadt 422:
423: isoutput = 1;
424:
425: new = palloc(N_EXEC, f_exec);
426: if (isok)
427: new->flags = F_NEEDOK;
428:
429: for (ap = argv = *argvp;; ++ap) {
430: if (!*ap)
431: errx(1,
432: "%s: no terminating \";\"", isok ? "-ok" : "-exec");
1.8 millert 433: if (**ap == ';')
434: break;
435: }
436:
437: cnt = ap - *argvp + 1;
438: new->e_argv = (char **)emalloc((u_int)cnt * sizeof(char *));
439: new->e_orig = (char **)emalloc((u_int)cnt * sizeof(char *));
440: new->e_len = (int *)emalloc((u_int)cnt * sizeof(int));
441:
442: for (argv = *argvp, cnt = 0; argv < ap; ++argv, ++cnt) {
443: new->e_orig[cnt] = *argv;
444: for (p = *argv; *p; ++p)
445: if (p[0] == '{' && p[1] == '}') {
446: new->e_argv[cnt] = emalloc((u_int)MAXPATHLEN);
447: new->e_len[cnt] = MAXPATHLEN;
448: break;
449: }
450: if (!*p) {
451: new->e_argv[cnt] = *argv;
452: new->e_len[cnt] = 0;
453: }
454: }
455: new->e_argv[cnt] = new->e_orig[cnt] = NULL;
456:
457: *argvp = argv + 1;
458: return (new);
459: }
460:
461: /*
462: * -execdir utility [arg ... ] ; functions --
463: *
464: * True if the executed utility returns a zero value as exit status.
465: * The end of the primary expression is delimited by a semicolon. If
466: * "{}" occurs anywhere, it gets replaced by the unqualified pathname.
467: * The current directory for the execution of utility is the same as
468: * the directory where the file lives.
469: */
470: int
471: f_execdir(plan, entry)
1.21 mpech 472: PLAN *plan;
1.8 millert 473: FTSENT *entry;
474: {
1.21 mpech 475: int cnt;
1.8 millert 476: pid_t pid;
1.15 millert 477: int status, fd;
1.10 millert 478: char base[MAXPATHLEN];
1.8 millert 479:
1.15 millert 480: /* fts(3) does not chdir for the root level so we do it ourselves. */
481: if (entry->fts_level == FTS_ROOTLEVEL) {
482: if ((fd = open(".", O_RDONLY)) == -1) {
483: warn("cannot open \".\"");
484: return (0);
485: }
486: if (chdir(entry->fts_accpath)) {
1.16 millert 487: (void) close(fd);
1.15 millert 488: return (0);
489: }
490: }
491:
1.10 millert 492: /* Substitute basename(path) for {} since cwd is it's parent dir */
493: (void)strncpy(base, basename(entry->fts_path), sizeof(base) - 1);
494: base[sizeof(base) - 1] = '\0';
1.8 millert 495: for (cnt = 0; plan->e_argv[cnt]; ++cnt)
496: if (plan->e_len[cnt])
497: brace_subst(plan->e_orig[cnt], &plan->e_argv[cnt],
1.10 millert 498: base, plan->e_len[cnt]);
1.8 millert 499:
500: /* don't mix output of command with find output */
501: fflush(stdout);
502: fflush(stderr);
503:
504: switch (pid = vfork()) {
505: case -1:
506: err(1, "fork");
507: /* NOTREACHED */
508: case 0:
509: execvp(plan->e_argv[0], plan->e_argv);
510: warn("%s", plan->e_argv[0]);
511: _exit(1);
512: }
1.15 millert 513:
514: /* Undo the above... */
515: if (entry->fts_level == FTS_ROOTLEVEL) {
516: if (fchdir(fd) == -1) {
517: warn("unable to chdir back to starting directory");
1.16 millert 518: (void) close(fd);
1.15 millert 519: return (0);
520: }
1.16 millert 521: (void) close(fd);
1.15 millert 522: }
523:
1.8 millert 524: pid = waitpid(pid, &status, 0);
525: return (pid != -1 && WIFEXITED(status) && !WEXITSTATUS(status));
526: }
527:
528: /*
529: * c_execdir --
530: * build three parallel arrays, one with pointers to the strings passed
531: * on the command line, one with (possibly duplicated) pointers to the
532: * argv array, and one with integer values that are lengths of the
533: * strings, but also flags meaning that the string has to be massaged.
534: */
535: PLAN *
1.28 deraadt 536: c_execdir(char *ignored, char ***argvp, int unused)
1.8 millert 537: {
538: PLAN *new; /* node returned */
1.21 mpech 539: int cnt;
540: char **argv, **ap, *p;
1.8 millert 541:
542: ftsoptions &= ~FTS_NOSTAT;
543: isoutput = 1;
544:
545: new = palloc(N_EXECDIR, f_execdir);
546:
547: for (ap = argv = *argvp;; ++ap) {
548: if (!*ap)
549: errx(1,
550: "-execdir: no terminating \";\"");
1.1 deraadt 551: if (**ap == ';')
552: break;
553: }
554:
555: cnt = ap - *argvp + 1;
556: new->e_argv = (char **)emalloc((u_int)cnt * sizeof(char *));
557: new->e_orig = (char **)emalloc((u_int)cnt * sizeof(char *));
558: new->e_len = (int *)emalloc((u_int)cnt * sizeof(int));
559:
560: for (argv = *argvp, cnt = 0; argv < ap; ++argv, ++cnt) {
561: new->e_orig[cnt] = *argv;
562: for (p = *argv; *p; ++p)
563: if (p[0] == '{' && p[1] == '}') {
564: new->e_argv[cnt] = emalloc((u_int)MAXPATHLEN);
565: new->e_len[cnt] = MAXPATHLEN;
566: break;
567: }
568: if (!*p) {
569: new->e_argv[cnt] = *argv;
570: new->e_len[cnt] = 0;
571: }
572: }
573: new->e_argv[cnt] = new->e_orig[cnt] = NULL;
574:
575: *argvp = argv + 1;
576: return (new);
577: }
1.19 millert 578:
579: /*
580: * -flags functions --
581: *
582: * The flags argument is used to represent file flags bits.
583: */
584: int
585: f_flags(plan, entry)
586: PLAN *plan;
587: FTSENT *entry;
588: {
589: u_int flags;
590:
591: flags = entry->fts_statp->st_flags &
592: (UF_NODUMP | UF_IMMUTABLE | UF_APPEND | UF_OPAQUE |
593: SF_ARCHIVED | SF_IMMUTABLE | SF_APPEND);
594: if (plan->flags == F_ATLEAST)
595: /* note that plan->fl_flags always is a subset of
596: plan->fl_mask */
597: return ((flags & plan->fl_mask) == plan->fl_flags);
598: else
599: return (flags == plan->fl_flags);
600: /* NOTREACHED */
601: }
602:
603: PLAN *
1.28 deraadt 604: c_flags(char *flags_str, char ***ignored, int unused)
1.19 millert 605: {
606: PLAN *new;
1.20 mickey 607: u_int32_t flags, notflags;
1.19 millert 608:
609: ftsoptions &= ~FTS_NOSTAT;
610:
611: new = palloc(N_FLAGS, f_flags);
612:
613: if (*flags_str == '-') {
614: new->flags = F_ATLEAST;
615: ++flags_str;
616: }
617:
1.20 mickey 618: if (strtofflags(&flags_str, &flags, ¬flags) == 1)
1.19 millert 619: errx(1, "-flags: %s: illegal flags string", flags_str);
620:
621: new->fl_flags = flags;
622: new->fl_mask = flags | notflags;
623: return (new);
624: }
1.1 deraadt 625:
626: /*
627: * -follow functions --
628: *
629: * Always true, causes symbolic links to be followed on a global
630: * basis.
631: */
632: PLAN *
1.28 deraadt 633: c_follow(char *ignore, char ***ignored, int unused)
1.1 deraadt 634: {
635: ftsoptions &= ~FTS_PHYSICAL;
636: ftsoptions |= FTS_LOGICAL;
637:
638: return (palloc(N_FOLLOW, f_always_true));
639: }
640:
641: /*
642: * -fstype functions --
643: *
644: * True if the file is of a certain type.
645: */
646: int
647: f_fstype(plan, entry)
648: PLAN *plan;
649: FTSENT *entry;
650: {
651: static dev_t curdev; /* need a guaranteed illegal dev value */
652: static int first = 1;
653: struct statfs sb;
654: static short val;
655: static char fstype[MFSNAMELEN];
656: char *p, save[2];
657:
658: /* Only check when we cross mount point. */
659: if (first || curdev != entry->fts_statp->st_dev) {
660: curdev = entry->fts_statp->st_dev;
661:
662: /*
663: * Statfs follows symlinks; find wants the link's file system,
664: * not where it points.
665: */
666: if (entry->fts_info == FTS_SL ||
667: entry->fts_info == FTS_SLNONE) {
1.9 millert 668: if ((p = strrchr(entry->fts_accpath, '/')))
1.1 deraadt 669: ++p;
670: else
671: p = entry->fts_accpath;
672: save[0] = p[0];
673: p[0] = '.';
674: save[1] = p[1];
675: p[1] = '\0';
676:
677: } else
678: p = NULL;
679:
680: if (statfs(entry->fts_accpath, &sb))
681: err(1, "%s", entry->fts_accpath);
682:
683: if (p) {
684: p[0] = save[0];
685: p[1] = save[1];
686: }
687:
688: first = 0;
689:
690: /*
691: * Further tests may need both of these values, so
692: * always copy both of them.
693: */
694: val = sb.f_flags;
695: strncpy(fstype, sb.f_fstypename, MFSNAMELEN);
696: }
697: switch (plan->flags) {
698: case F_MTFLAG:
699: return (val & plan->mt_data);
700: case F_MTTYPE:
701: return (strncmp(fstype, plan->c_data, MFSNAMELEN) == 0);
702: default:
703: abort();
704: }
705: }
706:
707: PLAN *
1.28 deraadt 708: c_fstype(char *arg, char ***ignored, int unused)
1.1 deraadt 709: {
1.21 mpech 710: PLAN *new;
1.1 deraadt 711:
712: ftsoptions &= ~FTS_NOSTAT;
713:
714: new = palloc(N_FSTYPE, f_fstype);
715: switch (*arg) {
716: case 'l':
717: if (!strcmp(arg, "local")) {
718: new->flags = F_MTFLAG;
719: new->mt_data = MNT_LOCAL;
720: return (new);
721: }
722: break;
723: case 'r':
724: if (!strcmp(arg, "rdonly")) {
725: new->flags = F_MTFLAG;
726: new->mt_data = MNT_RDONLY;
727: return (new);
728: }
729: break;
730: }
731:
732: new->flags = F_MTTYPE;
733: new->c_data = arg;
734: return (new);
735: }
736:
737: /*
738: * -group gname functions --
739: *
740: * True if the file belongs to the group gname. If gname is numeric and
741: * an equivalent of the getgrnam() function does not return a valid group
742: * name, gname is taken as a group ID.
743: */
744: int
745: f_group(plan, entry)
746: PLAN *plan;
747: FTSENT *entry;
748: {
749: return (entry->fts_statp->st_gid == plan->g_data);
750: }
751:
752: PLAN *
1.28 deraadt 753: c_group(char *gname, char ***ignored, int unused)
1.1 deraadt 754: {
755: PLAN *new;
756: struct group *g;
757: gid_t gid;
758:
759: ftsoptions &= ~FTS_NOSTAT;
760:
761: g = getgrnam(gname);
762: if (g == NULL) {
763: gid = atoi(gname);
764: if (gid == 0 && gname[0] != '0')
765: errx(1, "-group: %s: no such group", gname);
766: } else
767: gid = g->gr_gid;
768:
769: new = palloc(N_GROUP, f_group);
770: new->g_data = gid;
771: return (new);
772: }
773:
774: /*
775: * -inum n functions --
776: *
777: * True if the file has inode # n.
778: */
779: int
780: f_inum(plan, entry)
781: PLAN *plan;
782: FTSENT *entry;
783: {
784: COMPARE(entry->fts_statp->st_ino, plan->i_data);
785: }
786:
787: PLAN *
1.28 deraadt 788: c_inum(char *arg, char ***ignored, int unused)
1.1 deraadt 789: {
790: PLAN *new;
791:
792: ftsoptions &= ~FTS_NOSTAT;
793:
794: new = palloc(N_INUM, f_inum);
795: new->i_data = find_parsenum(new, "-inum", arg, NULL);
796: return (new);
797: }
798:
799: /*
800: * -links n functions --
801: *
802: * True if the file has n links.
803: */
804: int
805: f_links(plan, entry)
806: PLAN *plan;
807: FTSENT *entry;
808: {
809: COMPARE(entry->fts_statp->st_nlink, plan->l_data);
810: }
811:
812: PLAN *
1.28 deraadt 813: c_links(char *arg, char ***ignored, int unused)
1.1 deraadt 814: {
815: PLAN *new;
816:
817: ftsoptions &= ~FTS_NOSTAT;
818:
819: new = palloc(N_LINKS, f_links);
820: new->l_data = (nlink_t)find_parsenum(new, "-links", arg, NULL);
821: return (new);
822: }
823:
824: /*
825: * -ls functions --
826: *
827: * Always true - prints the current entry to stdout in "ls" format.
828: */
829: int
830: f_ls(plan, entry)
831: PLAN *plan;
832: FTSENT *entry;
833: {
834: printlong(entry->fts_path, entry->fts_accpath, entry->fts_statp);
835: return (1);
836: }
837:
838: PLAN *
1.28 deraadt 839: c_ls(char *ignore, char ***ignored, int unused)
1.1 deraadt 840: {
841: ftsoptions &= ~FTS_NOSTAT;
842: isoutput = 1;
843:
844: return (palloc(N_LS, f_ls));
1.5 tholo 845: }
846:
847: /*
848: * - maxdepth n functions --
849: *
850: * True if the current search depth is less than or equal to the
851: * maximum depth specified
852: */
853: int
1.6 tholo 854: f_maxdepth(plan, entry)
1.5 tholo 855: PLAN *plan;
856: FTSENT *entry;
857: {
858:
1.6 tholo 859: if (entry->fts_level >= plan->max_data)
1.5 tholo 860: fts_set(tree, entry, FTS_SKIP);
1.6 tholo 861: return (entry->fts_level <= plan->max_data);
1.5 tholo 862: }
863:
864: PLAN *
1.28 deraadt 865: c_maxdepth(char *arg, char ***ignored, int unused)
1.5 tholo 866: {
867: PLAN *new;
868:
1.6 tholo 869: new = palloc(N_MAXDEPTH, f_maxdepth);
870: new->max_data = atoi(arg);
871: return (new);
872: }
873:
874: /*
875: * - mindepth n functions --
876: *
877: * True if the current search depth is greater than or equal to the
878: * minimum depth specified
879: */
880: int
881: f_mindepth(plan, entry)
882: PLAN *plan;
883: FTSENT *entry;
884: {
885:
886: return (entry->fts_level >= plan->min_data);
887: }
888:
889: PLAN *
1.28 deraadt 890: c_mindepth(char *arg, char ***ignored, int unused)
1.6 tholo 891: {
892: PLAN *new;
893:
894: new = palloc(N_MINDEPTH, f_mindepth);
895: new->min_data = atoi(arg);
1.5 tholo 896: return (new);
1.1 deraadt 897: }
898:
899: /*
900: * -mtime n functions --
901: *
902: * True if the difference between the file modification time and the
903: * current time is n 24 hour periods.
904: */
905: int
906: f_mtime(plan, entry)
907: PLAN *plan;
908: FTSENT *entry;
909: {
910:
911: COMPARE((now - entry->fts_statp->st_mtime + SECSPERDAY - 1) /
1.17 millert 912: SECSPERDAY, plan->sec_data);
1.1 deraadt 913: }
914:
915: PLAN *
1.28 deraadt 916: c_mtime(char *arg, char ***ignored, int unused)
1.1 deraadt 917: {
918: PLAN *new;
919:
920: ftsoptions &= ~FTS_NOSTAT;
921:
922: new = palloc(N_MTIME, f_mtime);
1.17 millert 923: new->sec_data = find_parsenum(new, "-mtime", arg, NULL);
1.1 deraadt 924: TIME_CORRECT(new, N_MTIME);
1.11 deraadt 925: return (new);
926: }
927:
928: /*
929: * -mmin n functions --
930: *
931: * True if the difference between the file modification time and the
932: * current time is n min periods.
933: */
934: int
935: f_mmin(plan, entry)
936: PLAN *plan;
937: FTSENT *entry;
938: {
939: extern time_t now;
940:
941: COMPARE((now - entry->fts_statp->st_mtime + 60 - 1) /
1.17 millert 942: 60, plan->sec_data);
1.11 deraadt 943: }
944:
945: PLAN *
1.28 deraadt 946: c_mmin(char *arg, char ***ignored, int unused)
1.11 deraadt 947: {
948: PLAN *new;
949:
950: ftsoptions &= ~FTS_NOSTAT;
951:
952: new = palloc(N_MMIN, f_mmin);
1.17 millert 953: new->sec_data = find_parsenum(new, "-mmin", arg, NULL);
1.11 deraadt 954: TIME_CORRECT(new, N_MMIN);
1.1 deraadt 955: return (new);
956: }
957:
958: /*
959: * -name functions --
960: *
961: * True if the basename of the filename being examined
962: * matches pattern using Pattern Matching Notation S3.14
963: */
964: int
965: f_name(plan, entry)
966: PLAN *plan;
967: FTSENT *entry;
968: {
969: return (!fnmatch(plan->c_data, entry->fts_name, 0));
970: }
971:
972: PLAN *
1.28 deraadt 973: c_name(char *pattern, char ***ignored, int unused)
1.1 deraadt 974: {
975: PLAN *new;
976:
977: new = palloc(N_NAME, f_name);
1.18 deraadt 978: new->c_data = pattern;
979: return (new);
980: }
981:
982: /*
983: * -iname functions --
984: *
985: * Similar to -name, but does case insensitive matching
986: *
987: */
988: int
989: f_iname(plan, entry)
990: PLAN *plan;
991: FTSENT *entry;
992: {
993: return (!fnmatch(plan->c_data, entry->fts_name, FNM_CASEFOLD));
994: }
995:
996: PLAN *
1.28 deraadt 997: c_iname(char *pattern, char ***ignored, int unused)
1.18 deraadt 998: {
999: PLAN *new;
1000:
1001: new = palloc(N_INAME, f_iname);
1.1 deraadt 1002: new->c_data = pattern;
1003: return (new);
1004: }
1005:
1006: /*
1007: * -newer file functions --
1008: *
1009: * True if the current file has been modified more recently
1010: * then the modification time of the file named by the pathname
1011: * file.
1012: */
1013: int
1014: f_newer(plan, entry)
1015: PLAN *plan;
1016: FTSENT *entry;
1017: {
1.17 millert 1018:
1019: return (entry->fts_statp->st_mtimespec.tv_sec > plan->t_data.tv_sec ||
1020: (entry->fts_statp->st_mtimespec.tv_sec == plan->t_data.tv_sec &&
1021: entry->fts_statp->st_mtimespec.tv_nsec > plan->t_data.tv_nsec));
1.1 deraadt 1022: }
1023:
1024: PLAN *
1.28 deraadt 1025: c_newer(char *filename, char ***ignored, int unused)
1.1 deraadt 1026: {
1027: PLAN *new;
1028: struct stat sb;
1029:
1030: ftsoptions &= ~FTS_NOSTAT;
1031:
1032: if (stat(filename, &sb))
1033: err(1, "%s", filename);
1034: new = palloc(N_NEWER, f_newer);
1.17 millert 1035: memcpy(&new->t_data, &sb.st_mtimespec, sizeof(struct timespec));
1036: return (new);
1037: }
1038:
1039: /*
1040: * -anewer file functions --
1041: *
1042: * True if the current file has been accessed more recently
1043: * then the access time of the file named by the pathname
1044: * file.
1045: */
1046: int
1047: f_anewer(plan, entry)
1048: PLAN *plan;
1049: FTSENT *entry;
1050: {
1051:
1052: return (entry->fts_statp->st_atimespec.tv_sec > plan->t_data.tv_sec ||
1053: (entry->fts_statp->st_atimespec.tv_sec == plan->t_data.tv_sec &&
1054: entry->fts_statp->st_atimespec.tv_nsec > plan->t_data.tv_nsec));
1055: }
1056:
1057: PLAN *
1.28 deraadt 1058: c_anewer(char *filename, char ***ignored, int unused)
1.17 millert 1059: {
1060: PLAN *new;
1061: struct stat sb;
1062:
1063: ftsoptions &= ~FTS_NOSTAT;
1064:
1065: if (stat(filename, &sb))
1066: err(1, "%s", filename);
1.24 millert 1067: new = palloc(N_NEWER, f_anewer);
1.17 millert 1068: memcpy(&new->t_data, &sb.st_atimespec, sizeof(struct timespec));
1069: return (new);
1070: }
1071:
1072: /*
1073: * -cnewer file functions --
1074: *
1075: * True if the current file has been changed more recently
1076: * then the inode change time of the file named by the pathname
1077: * file.
1078: */
1079: int
1080: f_cnewer(plan, entry)
1081: PLAN *plan;
1082: FTSENT *entry;
1083: {
1084:
1085: return (entry->fts_statp->st_ctimespec.tv_sec > plan->t_data.tv_sec ||
1086: (entry->fts_statp->st_ctimespec.tv_sec == plan->t_data.tv_sec &&
1087: entry->fts_statp->st_ctimespec.tv_nsec > plan->t_data.tv_nsec));
1088: }
1089:
1090: PLAN *
1.28 deraadt 1091: c_cnewer(char *filename, char ***ignored, int unused)
1.17 millert 1092: {
1093: PLAN *new;
1094: struct stat sb;
1095:
1096: ftsoptions &= ~FTS_NOSTAT;
1097:
1098: if (stat(filename, &sb))
1099: err(1, "%s", filename);
1.24 millert 1100: new = palloc(N_NEWER, f_cnewer);
1.17 millert 1101: memcpy(&new->t_data, &sb.st_ctimespec, sizeof(struct timespec));
1.1 deraadt 1102: return (new);
1103: }
1104:
1105: /*
1106: * -nogroup functions --
1107: *
1108: * True if file belongs to a user ID for which the equivalent
1109: * of the getgrnam() 9.2.1 [POSIX.1] function returns NULL.
1110: */
1111: int
1112: f_nogroup(plan, entry)
1113: PLAN *plan;
1114: FTSENT *entry;
1115: {
1116: return (group_from_gid(entry->fts_statp->st_gid, 1) ? 0 : 1);
1117: }
1118:
1119: PLAN *
1.28 deraadt 1120: c_nogroup(char *ignore, char ***ignored, int unused)
1.1 deraadt 1121: {
1122: ftsoptions &= ~FTS_NOSTAT;
1123:
1124: return (palloc(N_NOGROUP, f_nogroup));
1125: }
1126:
1127: /*
1128: * -nouser functions --
1129: *
1130: * True if file belongs to a user ID for which the equivalent
1131: * of the getpwuid() 9.2.2 [POSIX.1] function returns NULL.
1132: */
1133: int
1134: f_nouser(plan, entry)
1135: PLAN *plan;
1136: FTSENT *entry;
1137: {
1138: return (user_from_uid(entry->fts_statp->st_uid, 1) ? 0 : 1);
1139: }
1140:
1141: PLAN *
1.28 deraadt 1142: c_nouser(char *ignore, char ***ignored, int unused)
1.1 deraadt 1143: {
1144: ftsoptions &= ~FTS_NOSTAT;
1145:
1146: return (palloc(N_NOUSER, f_nouser));
1147: }
1148:
1149: /*
1150: * -path functions --
1151: *
1152: * True if the path of the filename being examined
1153: * matches pattern using Pattern Matching Notation S3.14
1154: */
1155: int
1156: f_path(plan, entry)
1157: PLAN *plan;
1158: FTSENT *entry;
1159: {
1160: return (!fnmatch(plan->c_data, entry->fts_path, 0));
1161: }
1162:
1163: PLAN *
1.28 deraadt 1164: c_path(char *pattern, char ***ignored, int unused)
1.1 deraadt 1165: {
1166: PLAN *new;
1167:
1168: new = palloc(N_NAME, f_path);
1169: new->c_data = pattern;
1170: return (new);
1171: }
1172:
1173: /*
1174: * -perm functions --
1175: *
1176: * The mode argument is used to represent file mode bits. If it starts
1177: * with a leading digit, it's treated as an octal mode, otherwise as a
1178: * symbolic mode.
1179: */
1180: int
1181: f_perm(plan, entry)
1182: PLAN *plan;
1183: FTSENT *entry;
1184: {
1185: mode_t mode;
1186:
1187: mode = entry->fts_statp->st_mode &
1188: (S_ISUID|S_ISGID|S_ISTXT|S_IRWXU|S_IRWXG|S_IRWXO);
1189: if (plan->flags == F_ATLEAST)
1190: return ((plan->m_data | mode) == mode);
1191: else
1192: return (mode == plan->m_data);
1193: /* NOTREACHED */
1194: }
1195:
1196: PLAN *
1.28 deraadt 1197: c_perm(char *perm, char ***ignored, int unused)
1.1 deraadt 1198: {
1199: PLAN *new;
1.29 ! otto 1200: void *set;
1.1 deraadt 1201:
1202: ftsoptions &= ~FTS_NOSTAT;
1203:
1204: new = palloc(N_PERM, f_perm);
1205:
1206: if (*perm == '-') {
1207: new->flags = F_ATLEAST;
1208: ++perm;
1209: }
1210:
1211: if ((set = setmode(perm)) == NULL)
1.19 millert 1212: errx(1, "-perm: %s: illegal mode string", perm);
1.1 deraadt 1213:
1214: new->m_data = getmode(set, 0);
1.12 deraadt 1215: free(set);
1.1 deraadt 1216: return (new);
1217: }
1218:
1219: /*
1220: * -print functions --
1221: *
1222: * Always true, causes the current pathame to be written to
1223: * standard output.
1224: */
1225: int
1226: f_print(plan, entry)
1227: PLAN *plan;
1228: FTSENT *entry;
1229: {
1230: (void)printf("%s\n", entry->fts_path);
1231: return(1);
1232: }
1233:
1234: /* ARGSUSED */
1.9 millert 1235: int
1.1 deraadt 1236: f_print0(plan, entry)
1237: PLAN *plan;
1238: FTSENT *entry;
1239: {
1240: (void)fputs(entry->fts_path, stdout);
1241: (void)fputc('\0', stdout);
1242: return(1);
1243: }
1244:
1245: PLAN *
1.28 deraadt 1246: c_print(char *ignore, char ***ignored, int unused)
1.1 deraadt 1247: {
1248: isoutput = 1;
1249:
1250: return(palloc(N_PRINT, f_print));
1251: }
1252:
1253: PLAN *
1.28 deraadt 1254: c_print0(char *ignore, char ***ignored, int unused)
1.1 deraadt 1255: {
1256: isoutput = 1;
1257:
1258: return(palloc(N_PRINT0, f_print0));
1259: }
1260:
1261: /*
1262: * -prune functions --
1263: *
1264: * Prune a portion of the hierarchy.
1265: */
1266: int
1267: f_prune(plan, entry)
1268: PLAN *plan;
1269: FTSENT *entry;
1270: {
1271:
1272: if (fts_set(tree, entry, FTS_SKIP))
1273: err(1, "%s", entry->fts_path);
1274: return (1);
1275: }
1276:
1277: PLAN *
1.28 deraadt 1278: c_prune(char *ignore, char ***ignored, int unused)
1.1 deraadt 1279: {
1280: return (palloc(N_PRUNE, f_prune));
1281: }
1282:
1283: /*
1284: * -size n[c] functions --
1285: *
1286: * True if the file size in bytes, divided by an implementation defined
1287: * value and rounded up to the next integer, is n. If n is followed by
1288: * a c, the size is in bytes.
1289: */
1290: #define FIND_SIZE 512
1291: static int divsize = 1;
1292:
1293: int
1294: f_size(plan, entry)
1295: PLAN *plan;
1296: FTSENT *entry;
1297: {
1298: off_t size;
1299:
1300: size = divsize ? (entry->fts_statp->st_size + FIND_SIZE - 1) /
1301: FIND_SIZE : entry->fts_statp->st_size;
1302: COMPARE(size, plan->o_data);
1303: }
1304:
1305: PLAN *
1.28 deraadt 1306: c_size(char *arg, char ***ignored, int unused)
1.1 deraadt 1307: {
1308: PLAN *new;
1309: char endch;
1310:
1311: ftsoptions &= ~FTS_NOSTAT;
1312:
1313: new = palloc(N_SIZE, f_size);
1314: endch = 'c';
1315: new->o_data = find_parsenum(new, "-size", arg, &endch);
1316: if (endch == 'c')
1317: divsize = 0;
1318: return (new);
1319: }
1320:
1321: /*
1322: * -type c functions --
1323: *
1324: * True if the type of the file is c, where c is b, c, d, p, or f for
1325: * block special file, character special file, directory, FIFO, or
1326: * regular file, respectively.
1327: */
1328: int
1329: f_type(plan, entry)
1330: PLAN *plan;
1331: FTSENT *entry;
1332: {
1333: return ((entry->fts_statp->st_mode & S_IFMT) == plan->m_data);
1334: }
1335:
1336: PLAN *
1.28 deraadt 1337: c_type(char *typestring, char ***ignored, int unused)
1.1 deraadt 1338: {
1339: PLAN *new;
1340: mode_t mask;
1341:
1342: ftsoptions &= ~FTS_NOSTAT;
1343:
1344: switch (typestring[0]) {
1.2 deraadt 1345: #ifdef S_IFWHT
1.3 deraadt 1346: case 'W':
1347: mask = S_IFWHT;
1.13 espie 1348: if ((ftsoptions & FTS_WHITEOUT) == 0)
1349: warnx("-type W without -W is a no-op");
1.3 deraadt 1350: break;
1.2 deraadt 1351: #endif
1.1 deraadt 1352: case 'b':
1353: mask = S_IFBLK;
1354: break;
1355: case 'c':
1356: mask = S_IFCHR;
1357: break;
1358: case 'd':
1359: mask = S_IFDIR;
1360: break;
1361: case 'f':
1362: mask = S_IFREG;
1363: break;
1364: case 'l':
1365: mask = S_IFLNK;
1366: break;
1367: case 'p':
1368: mask = S_IFIFO;
1369: break;
1370: case 's':
1371: mask = S_IFSOCK;
1372: break;
1373: default:
1374: errx(1, "-type: %s: unknown type", typestring);
1375: }
1376:
1377: new = palloc(N_TYPE, f_type);
1378: new->m_data = mask;
1379: return (new);
1380: }
1381:
1382: /*
1383: * -user uname functions --
1384: *
1385: * True if the file belongs to the user uname. If uname is numeric and
1386: * an equivalent of the getpwnam() S9.2.2 [POSIX.1] function does not
1387: * return a valid user name, uname is taken as a user ID.
1388: */
1389: int
1390: f_user(plan, entry)
1391: PLAN *plan;
1392: FTSENT *entry;
1393: {
1394: return (entry->fts_statp->st_uid == plan->u_data);
1395: }
1396:
1397: PLAN *
1.28 deraadt 1398: c_user(char *username, char ***ignored, int unused)
1.1 deraadt 1399: {
1400: PLAN *new;
1401: struct passwd *p;
1402: uid_t uid;
1403:
1404: ftsoptions &= ~FTS_NOSTAT;
1405:
1406: p = getpwnam(username);
1407: if (p == NULL) {
1408: uid = atoi(username);
1409: if (uid == 0 && username[0] != '0')
1410: errx(1, "-user: %s: no such user", username);
1411: } else
1412: uid = p->pw_uid;
1413:
1414: new = palloc(N_USER, f_user);
1415: new->u_data = uid;
1416: return (new);
1417: }
1418:
1419: /*
1420: * -xdev functions --
1421: *
1422: * Always true, causes find not to decend past directories that have a
1423: * different device ID (st_dev, see stat() S5.6.2 [POSIX.1])
1424: */
1425: PLAN *
1.28 deraadt 1426: c_xdev(char *ignore, char ***ignored, int unused)
1.1 deraadt 1427: {
1428: ftsoptions |= FTS_XDEV;
1429:
1430: return (palloc(N_XDEV, f_always_true));
1431: }
1432:
1433: /*
1434: * ( expression ) functions --
1435: *
1436: * True if expression is true.
1437: */
1438: int
1439: f_expr(plan, entry)
1440: PLAN *plan;
1441: FTSENT *entry;
1442: {
1.21 mpech 1443: PLAN *p;
1444: int state;
1.1 deraadt 1445:
1446: for (p = plan->p_data[0];
1447: p && (state = (p->eval)(p, entry)); p = p->next);
1448: return (state);
1449: }
1450:
1451: /*
1452: * N_OPENPAREN and N_CLOSEPAREN nodes are temporary place markers. They are
1453: * eliminated during phase 2 of find_formplan() --- the '(' node is converted
1454: * to a N_EXPR node containing the expression and the ')' node is discarded.
1455: */
1456: PLAN *
1.28 deraadt 1457: c_openparen(char *ignore, char ***ignored, int unused)
1.1 deraadt 1458: {
1.28 deraadt 1459: return (palloc(N_OPENPAREN, (int (*)(PLAN *, FTSENT *))-1));
1.1 deraadt 1460: }
1461:
1462: PLAN *
1.28 deraadt 1463: c_closeparen(char *ignore, char ***ignored, int unused)
1.1 deraadt 1464: {
1.28 deraadt 1465: return (palloc(N_CLOSEPAREN, (int (*)(PLAN *, FTSENT *))-1));
1.1 deraadt 1466: }
1467:
1468: /*
1469: * ! expression functions --
1470: *
1471: * Negation of a primary; the unary NOT operator.
1472: */
1473: int
1474: f_not(plan, entry)
1475: PLAN *plan;
1476: FTSENT *entry;
1477: {
1.21 mpech 1478: PLAN *p;
1479: int state;
1.1 deraadt 1480:
1481: for (p = plan->p_data[0];
1482: p && (state = (p->eval)(p, entry)); p = p->next);
1483: return (!state);
1484: }
1485:
1486: PLAN *
1.28 deraadt 1487: c_not(char *ignore, char ***ignored, int unused)
1.1 deraadt 1488: {
1489: return (palloc(N_NOT, f_not));
1490: }
1491:
1492: /*
1493: * expression -o expression functions --
1494: *
1495: * Alternation of primaries; the OR operator. The second expression is
1496: * not evaluated if the first expression is true.
1497: */
1498: int
1499: f_or(plan, entry)
1500: PLAN *plan;
1501: FTSENT *entry;
1502: {
1.21 mpech 1503: PLAN *p;
1504: int state;
1.1 deraadt 1505:
1506: for (p = plan->p_data[0];
1507: p && (state = (p->eval)(p, entry)); p = p->next);
1508:
1509: if (state)
1510: return (1);
1511:
1512: for (p = plan->p_data[1];
1513: p && (state = (p->eval)(p, entry)); p = p->next);
1514: return (state);
1515: }
1516:
1517: PLAN *
1.28 deraadt 1518: c_or(char *ignore, char ***ignored, int unused)
1.1 deraadt 1519: {
1520: return (palloc(N_OR, f_or));
1521: }
1522:
1523: static PLAN *
1.28 deraadt 1524: palloc(enum ntype t, int (*f)(PLAN *, FTSENT *))
1.1 deraadt 1525: {
1526: PLAN *new;
1527:
1.17 millert 1528: if ((new = calloc(1, sizeof(PLAN)))) {
1.1 deraadt 1529: new->type = t;
1530: new->eval = f;
1531: return (new);
1532: }
1533: err(1, NULL);
1534: /* NOTREACHED */
1535: }
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