Annotation of src/usr.bin/cvs/file.c, Revision 1.38
1.38 ! deraadt 1: /* $OpenBSD: file.c,v 1.37 2004/12/06 07:28:15 jfb Exp $ */
1.1 jfb 2: /*
3: * Copyright (c) 2004 Jean-Francois Brousseau <jfb@openbsd.org>
1.26 jfb 4: * All rights reserved.
1.1 jfb 5: *
1.26 jfb 6: * Redistribution and use in source and binary forms, with or without
7: * modification, are permitted provided that the following conditions
8: * are met:
1.1 jfb 9: *
1.26 jfb 10: * 1. Redistributions of source code must retain the above copyright
11: * notice, this list of conditions and the following disclaimer.
1.1 jfb 12: * 2. The name of the author may not be used to endorse or promote products
1.26 jfb 13: * derived from this software without specific prior written permission.
1.1 jfb 14: *
15: * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,
16: * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
17: * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
18: * THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
19: * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
20: * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
21: * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
22: * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
23: * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
1.26 jfb 24: * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
1.1 jfb 25: */
26:
27: #include <sys/types.h>
28: #include <sys/queue.h>
29: #include <sys/stat.h>
30:
31: #include <pwd.h>
32: #include <errno.h>
33: #include <stdio.h>
34: #include <fcntl.h>
35: #include <dirent.h>
36: #include <stdlib.h>
37: #include <unistd.h>
38: #include <string.h>
39: #include <fnmatch.h>
40:
41: #include "cvs.h"
42: #include "log.h"
1.14 jfb 43: #include "file.h"
1.1 jfb 44:
45:
46: #define CVS_IGN_STATIC 0x01 /* pattern is static, no need to glob */
47:
48: #define CVS_CHAR_ISMETA(c) ((c == '*') || (c == '?') || (c == '['))
49:
50:
51: /* ignore pattern */
52: struct cvs_ignpat {
53: char ip_pat[MAXNAMLEN];
54: int ip_flags;
55: TAILQ_ENTRY (cvs_ignpat) ip_list;
56: };
57:
58:
59: /*
60: * Standard patterns to ignore.
61: */
62:
63: static const char *cvs_ign_std[] = {
64: ".",
65: "..",
66: "*.o",
67: "*.so",
68: "*.bak",
69: "*.orig",
70: "*.rej",
71: "*.exe",
72: "*.depend",
73: "CVS",
74: "core",
1.8 jfb 75: ".#*",
1.1 jfb 76: #ifdef OLD_SMELLY_CRUFT
77: "RCSLOG",
78: "tags",
79: "TAGS",
80: "RCS",
81: "SCCS",
82: "#*",
83: ",*",
84: #endif
85: };
86:
87:
1.11 jfb 88: /*
1.34 jfb 89: * Filename hash table used to avoid duplication of name strings when working
90: * on large source trees with common parts.
91: */
92:
93: SLIST_HEAD(cvs_fhb, cvs_fname);
94:
95: static struct cvs_fhb cvs_fnht[CVS_FILE_NBUCKETS];
96:
97:
98:
99: /*
1.11 jfb 100: * Entries in the CVS/Entries file with a revision of '0' have only been
101: * added. Compare against this revision to see if this is the case
102: */
1.4 jfb 103: static RCSNUM *cvs_addedrev;
104:
105:
1.1 jfb 106: TAILQ_HEAD(, cvs_ignpat) cvs_ign_pats;
107:
108:
1.34 jfb 109: static int cvs_file_getdir (CVSFILE *, int);
110: static void cvs_file_freedir (struct cvs_dir *);
111: static int cvs_file_sort (struct cvs_flist *, u_int);
112: static int cvs_file_cmp (const void *, const void *);
113: static int cvs_file_cmpname (const char *, const char *);
114: static u_int8_t cvs_file_hashname (const char *);
115: static struct cvs_fname* cvs_file_getname (const char *);
116: static CVSFILE* cvs_file_alloc (const char *, u_int);
117: static CVSFILE* cvs_file_lget (const char *, int, CVSFILE *);
1.3 jfb 118:
119:
120:
1.1 jfb 121: /*
122: * cvs_file_init()
123: *
124: */
125:
126: int
127: cvs_file_init(void)
128: {
129: int i;
130: size_t len;
131: char path[MAXPATHLEN], buf[MAXNAMLEN];
132: FILE *ifp;
133: struct passwd *pwd;
134:
1.34 jfb 135: /* initialize the filename hash table */
136: for (i = 0; i < CVS_FILE_NBUCKETS; i++)
137: SLIST_INIT(&(cvs_fnht[i]));
138:
1.1 jfb 139: TAILQ_INIT(&cvs_ign_pats);
140:
1.4 jfb 141: cvs_addedrev = rcsnum_alloc();
142: rcsnum_aton("0", NULL, cvs_addedrev);
143:
1.1 jfb 144: /* standard patterns to ignore */
1.10 jfb 145: for (i = 0; i < (int)(sizeof(cvs_ign_std)/sizeof(char *)); i++)
1.26 jfb 146: cvs_file_ignore(cvs_ign_std[i]);
1.1 jfb 147:
148: /* read the cvsignore file in the user's home directory, if any */
149: pwd = getpwuid(getuid());
150: if (pwd != NULL) {
151: snprintf(path, sizeof(path), "%s/.cvsignore", pwd->pw_dir);
152: ifp = fopen(path, "r");
153: if (ifp == NULL) {
154: if (errno != ENOENT)
1.34 jfb 155: cvs_log(LP_ERRNO,
156: "failed to open user's cvsignore", path);
1.38 ! deraadt 157: } else {
1.1 jfb 158: while (fgets(buf, sizeof(buf), ifp) != NULL) {
159: len = strlen(buf);
160: if (len == 0)
161: continue;
162: if (buf[len - 1] != '\n') {
163: cvs_log(LP_ERR, "line too long in `%s'",
164: path);
165: }
166: buf[--len] = '\0';
167: cvs_file_ignore(buf);
168: }
169: (void)fclose(ifp);
170: }
171: }
172:
173: return (0);
174: }
175:
176:
177: /*
178: * cvs_file_ignore()
179: *
180: * Add the pattern <pat> to the list of patterns for files to ignore.
181: * Returns 0 on success, or -1 on failure.
182: */
183:
184: int
185: cvs_file_ignore(const char *pat)
186: {
187: char *cp;
188: struct cvs_ignpat *ip;
189:
190: ip = (struct cvs_ignpat *)malloc(sizeof(*ip));
191: if (ip == NULL) {
192: cvs_log(LP_ERR, "failed to allocate space for ignore pattern");
193: return (-1);
194: }
195:
196: strlcpy(ip->ip_pat, pat, sizeof(ip->ip_pat));
197:
198: /* check if we will need globbing for that pattern */
199: ip->ip_flags = CVS_IGN_STATIC;
200: for (cp = ip->ip_pat; *cp != '\0'; cp++) {
201: if (CVS_CHAR_ISMETA(*cp)) {
202: ip->ip_flags &= ~CVS_IGN_STATIC;
203: break;
204: }
205: }
206:
207: TAILQ_INSERT_TAIL(&cvs_ign_pats, ip, ip_list);
208:
209: return (0);
210: }
211:
212:
213: /*
1.5 jfb 214: * cvs_file_chkign()
1.1 jfb 215: *
216: * Returns 1 if the filename <file> is matched by one of the ignore
217: * patterns, or 0 otherwise.
218: */
219:
220: int
1.5 jfb 221: cvs_file_chkign(const char *file)
1.1 jfb 222: {
1.23 jfb 223: int flags;
1.1 jfb 224: struct cvs_ignpat *ip;
225:
1.23 jfb 226: flags = FNM_PERIOD;
227: if (cvs_nocase)
228: flags |= FNM_CASEFOLD;
229:
1.1 jfb 230: TAILQ_FOREACH(ip, &cvs_ign_pats, ip_list) {
231: if (ip->ip_flags & CVS_IGN_STATIC) {
1.23 jfb 232: if (cvs_file_cmpname(file, ip->ip_pat) == 0)
1.1 jfb 233: return (1);
1.38 ! deraadt 234: } else if (fnmatch(ip->ip_pat, file, flags) == 0)
1.1 jfb 235: return (1);
236: }
237:
238: return (0);
239: }
240:
241:
242: /*
1.6 jfb 243: * cvs_file_create()
1.1 jfb 244: *
1.6 jfb 245: * Create a new file whose path is specified in <path> and of type <type>.
1.26 jfb 246: * If the type is DT_DIR, the CVS administrative repository and files will be
247: * created.
1.25 jfb 248: * Returns the created file on success, or NULL on failure.
1.1 jfb 249: */
250:
1.6 jfb 251: CVSFILE*
1.34 jfb 252: cvs_file_create(CVSFILE *parent, const char *path, u_int type, mode_t mode)
1.1 jfb 253: {
1.6 jfb 254: int fd;
1.34 jfb 255: char fp[MAXPATHLEN];
1.6 jfb 256: CVSFILE *cfp;
1.1 jfb 257:
1.6 jfb 258: cfp = cvs_file_alloc(path, type);
259: if (cfp == NULL)
260: return (NULL);
1.26 jfb 261:
1.22 jfb 262: cfp->cf_mode = mode;
1.34 jfb 263: cfp->cf_parent = parent;
1.1 jfb 264:
1.34 jfb 265: if (type == DT_DIR) {
266: cfp->cf_ddat->cd_root = cvsroot_get(path);
267: cfp->cf_ddat->cd_repo = strdup(cvs_file_getpath(cfp,
268: fp, sizeof(fp)));
269: if (cfp->cf_ddat->cd_repo == NULL) {
270: cvs_file_free(cfp);
271: return (NULL);
272: }
1.33 joris 273:
1.26 jfb 274: if ((mkdir(path, mode) == -1) || (cvs_mkadmin(cfp, mode) < 0)) {
1.6 jfb 275: cvs_file_free(cfp);
276: return (NULL);
277: }
1.26 jfb 278:
1.27 jfb 279: cfp->cf_ddat->cd_ent = cvs_ent_open(path, O_RDWR);
1.38 ! deraadt 280: } else {
1.6 jfb 281: fd = open(path, O_WRONLY|O_CREAT|O_EXCL, mode);
282: if (fd == -1) {
283: cvs_file_free(cfp);
1.1 jfb 284: return (NULL);
285: }
1.6 jfb 286: (void)close(fd);
1.1 jfb 287: }
288:
1.6 jfb 289: return (cfp);
1.3 jfb 290: }
291:
292:
293: /*
1.35 jfb 294: * cvs_file_copy()
295: *
296: * Allocate space to create a copy of the file <orig>. The copy inherits all
297: * of the original's attributes, but does not inherit its children if the
298: * original file is a directory. Note that files copied using this mechanism
299: * are linked to their parent, but the parent has no link to the file. This
300: * is so cvs_file_getpath() works.
301: * Returns the copied file on success, or NULL on failure. The returned
302: * structure should be freed using cvs_file_free().
303: */
304:
305: CVSFILE*
306: cvs_file_copy(CVSFILE *orig)
307: {
308: char path[MAXPATHLEN];
309: CVSFILE *cfp;
310:
311: cvs_file_getpath(orig, path, sizeof(path));
312:
313: cfp = cvs_file_alloc(path, orig->cf_type);
314: if (cfp == NULL)
315: return (NULL);
316:
317: cfp->cf_parent = orig->cf_parent;
318: cfp->cf_mode = orig->cf_mode;
319: cfp->cf_mtime = orig->cf_mtime;
320: cfp->cf_cvstat = orig->cf_cvstat;
321:
322: if (orig->cf_type == DT_DIR) {
323: /* XXX copy CVS directory attributes */
324: }
325:
326: return (cfp);
327: }
328:
329:
330: /*
1.3 jfb 331: * cvs_file_get()
332: *
333: * Load a cvs_file structure with all the information pertaining to the file
334: * <path>.
1.4 jfb 335: * The <flags> parameter specifies various flags that alter the behaviour of
1.21 jfb 336: * the function. The CF_RECURSE flag causes the function to recursively load
337: * subdirectories when <path> is a directory.
338: * The CF_SORT flag causes the files to be sorted in alphabetical order upon
339: * loading. The special case of "." as a path specification generates
340: * recursion for a single level and is equivalent to calling cvs_file_get() on
341: * all files of that directory.
1.3 jfb 342: * Returns a pointer to the cvs file structure, which must later be freed
343: * with cvs_file_free().
344: */
345:
1.14 jfb 346: CVSFILE*
1.3 jfb 347: cvs_file_get(const char *path, int flags)
348: {
1.14 jfb 349: return cvs_file_lget(path, flags, NULL);
1.9 jfb 350: }
351:
352:
353: /*
354: * cvs_file_getspec()
355: *
356: * Load a specific set of files whose paths are given in the vector <fspec>,
357: * whose size is given in <fsn>.
358: * Returns a pointer to the lowest common subdirectory to all specified
359: * files.
360: */
361:
362: CVSFILE*
363: cvs_file_getspec(char **fspec, int fsn, int flags)
364: {
1.26 jfb 365: int i;
366: char *sp, *np, pcopy[MAXPATHLEN];
367: CVSFILE *base, *cf, *nf;
368:
369: base = cvs_file_get(".", 0);
370: if (base == NULL)
371: return (NULL);
372:
373: for (i = 0; i < fsn; i++) {
374: strlcpy(pcopy, fspec[i], sizeof(pcopy));
375: cf = base;
376: sp = pcopy;
377:
378: do {
379: np = strchr(sp, '/');
380: if (np != NULL)
381: *np = '\0';
382: nf = cvs_file_find(cf, sp);
383: if (nf == NULL) {
384: nf = cvs_file_lget(pcopy, 0, cf);
385: if (nf == NULL) {
386: cvs_file_free(base);
387: return (NULL);
388: }
389:
390: cvs_file_attach(cf, nf);
391: }
392:
393: if (np != NULL) {
394: *np = '/';
395: sp = np + 1;
396: }
397:
398: cf = nf;
399: } while (np != NULL);
400: }
401:
402: return (base);
1.3 jfb 403: }
404:
405:
406: /*
1.13 jfb 407: * cvs_file_find()
408: *
409: * Find the pointer to a CVS file entry within the file hierarchy <hier>.
410: * The file's pathname <path> must be relative to the base of <hier>.
411: * Returns the entry on success, or NULL on failure.
412: */
413:
414: CVSFILE*
415: cvs_file_find(CVSFILE *hier, const char *path)
416: {
417: char *pp, *sp, pbuf[MAXPATHLEN];
418: CVSFILE *sf, *cf;
419:
420: strlcpy(pbuf, path, sizeof(pbuf));
421:
422: cf = hier;
423: pp = pbuf;
424: do {
425: sp = strchr(pp, '/');
426: if (sp != NULL)
1.24 jfb 427: *(sp++) = '\0';
1.13 jfb 428:
429: /* special case */
430: if (*pp == '.') {
431: if ((*(pp + 1) == '.') && (*(pp + 2) == '\0')) {
432: /* request to go back to parent */
433: if (cf->cf_parent == NULL) {
434: cvs_log(LP_NOTICE,
435: "path %s goes back too far", path);
436: return (NULL);
437: }
438: cf = cf->cf_parent;
439: continue;
1.38 ! deraadt 440: } else if (*(pp + 1) == '\0')
1.13 jfb 441: continue;
442: }
443:
444: TAILQ_FOREACH(sf, &(cf->cf_ddat->cd_files), cf_list)
1.34 jfb 445: if (cvs_file_cmpname(pp, CVS_FILE_NAME(sf)) == 0)
1.13 jfb 446: break;
447: if (sf == NULL)
448: return (NULL);
449:
450: cf = sf;
451: pp = sp;
452: } while (sp != NULL);
453:
1.24 jfb 454: return (cf);
1.13 jfb 455: }
456:
457:
458: /*
1.34 jfb 459: * cvs_file_getpath()
460: *
461: * Get the full path of the file <file> and store it in <buf>, which is of
462: * size <len>. For portability, it is recommended that <buf> always be
463: * at least MAXPATHLEN bytes long.
464: * Returns a pointer to the start of the path on success, or NULL on failure.
465: */
466:
467: char*
468: cvs_file_getpath(CVSFILE *file, char *buf, size_t len)
469: {
470: u_int i;
471: char *fp, *namevec[CVS_FILE_MAXDEPTH];
472: CVSFILE *top;
473:
474: buf[0] = '\0';
475: i = CVS_FILE_MAXDEPTH;
476: memset(namevec, 0, sizeof(namevec));
477:
478: /* find the top node */
479: for (top = file; (top != NULL) && (i > 0); top = top->cf_parent) {
480: fp = CVS_FILE_NAME(top);
481:
482: /* skip self-references */
483: if ((fp[0] == '.') && (fp[1] == '\0'))
484: continue;
485: namevec[--i] = fp;
486: }
487:
488: if (i == 0)
489: return (NULL);
490: else if (i == CVS_FILE_MAXDEPTH) {
491: strlcpy(buf, ".", len);
492: return (buf);
493: }
494:
495: while (i < CVS_FILE_MAXDEPTH - 1) {
496: strlcat(buf, namevec[i++], len);
497: strlcat(buf, "/", len);
498: }
499: strlcat(buf, namevec[i], len);
500:
501: return (buf);
502: }
503:
504:
505: /*
1.22 jfb 506: * cvs_file_attach()
507: *
508: * Attach the file <file> as one of the children of parent <parent>, which
509: * has to be a file of type DT_DIR.
510: * Returns 0 on success, or -1 on failure.
511: */
512:
513: int
514: cvs_file_attach(CVSFILE *parent, CVSFILE *file)
515: {
1.23 jfb 516: struct cvs_dir *dp;
1.22 jfb 517:
518: if (parent->cf_type != DT_DIR)
519: return (-1);
520:
1.23 jfb 521: dp = parent->cf_ddat;
522:
523: TAILQ_INSERT_TAIL(&(dp->cd_files), file, cf_list);
524: dp->cd_nfiles++;
1.22 jfb 525: file->cf_parent = parent;
526:
527: return (0);
528: }
529:
530:
531: /*
1.3 jfb 532: * cvs_file_getdir()
533: *
534: * Get a cvs directory structure for the directory whose path is <dir>.
1.30 jfb 535: * This function should not free the directory information on error, as this
536: * is performed by cvs_file_free().
1.3 jfb 537: */
538:
1.6 jfb 539: static int
1.14 jfb 540: cvs_file_getdir(CVSFILE *cf, int flags)
1.3 jfb 541: {
1.13 jfb 542: int ret, fd;
1.16 jfb 543: u_int ndirs;
1.3 jfb 544: long base;
1.13 jfb 545: void *dp, *ep;
1.34 jfb 546: char fbuf[2048], pbuf[MAXPATHLEN], fpath[MAXPATHLEN];
1.3 jfb 547: struct dirent *ent;
1.14 jfb 548: CVSFILE *cfp;
1.20 jfb 549: struct stat st;
1.3 jfb 550: struct cvs_dir *cdp;
1.10 jfb 551: struct cvs_flist dirs;
1.3 jfb 552:
1.18 jfb 553: ndirs = 0;
1.10 jfb 554: TAILQ_INIT(&dirs);
1.7 jfb 555: cdp = cf->cf_ddat;
556:
1.34 jfb 557: cvs_file_getpath(cf, fpath, sizeof(fpath));
558:
1.26 jfb 559: if (cf->cf_cvstat != CVS_FST_UNKNOWN) {
1.34 jfb 560: cdp->cd_root = cvsroot_get(fpath);
1.30 jfb 561: if (cdp->cd_root == NULL)
1.26 jfb 562: return (-1);
1.3 jfb 563:
1.26 jfb 564: if (flags & CF_MKADMIN)
565: cvs_mkadmin(cf, 0755);
1.14 jfb 566:
1.26 jfb 567: /* if the CVS administrative directory exists, load the info */
1.34 jfb 568: snprintf(pbuf, sizeof(pbuf), "%s/" CVS_PATH_CVSDIR, fpath);
1.26 jfb 569: if ((stat(pbuf, &st) == 0) && S_ISDIR(st.st_mode)) {
1.34 jfb 570: if (cvs_readrepo(fpath, pbuf, sizeof(pbuf)) == 0) {
1.26 jfb 571: cdp->cd_repo = strdup(pbuf);
572: if (cdp->cd_repo == NULL) {
1.28 jfb 573: cvs_log(LP_ERRNO,
574: "failed to dup repository string");
1.26 jfb 575: return (-1);
576: }
1.20 jfb 577: }
1.26 jfb 578:
1.37 jfb 579: cdp->cd_ent = cvs_ent_open(fpath, O_RDONLY);
1.20 jfb 580: }
581: }
1.14 jfb 582:
1.26 jfb 583: if (!(flags & CF_RECURSE) || (cf->cf_cvstat == CVS_FST_UNKNOWN))
584: return (0);
585:
1.34 jfb 586: fd = open(fpath, O_RDONLY);
1.3 jfb 587: if (fd == -1) {
1.34 jfb 588: cvs_log(LP_ERRNO, "failed to open `%s'", fpath);
1.6 jfb 589: return (-1);
1.3 jfb 590: }
591:
1.11 jfb 592: do {
593: ret = getdirentries(fd, fbuf, sizeof(fbuf), &base);
594: if (ret == -1) {
595: cvs_log(LP_ERRNO, "failed to get directory entries");
596: (void)close(fd);
597: return (-1);
598: }
1.10 jfb 599:
1.11 jfb 600: dp = fbuf;
601: ep = fbuf + (size_t)ret;
602: while (dp < ep) {
603: ent = (struct dirent *)dp;
1.32 jfb 604: dp += ent->d_reclen;
1.31 jfb 605: if (ent->d_fileno == 0)
606: continue;
1.11 jfb 607:
608: if ((flags & CF_IGNORE) && cvs_file_chkign(ent->d_name))
1.24 jfb 609: continue;
610:
611: if ((flags & CF_NOSYMS) && (ent->d_type == DT_LNK))
1.11 jfb 612: continue;
613:
1.34 jfb 614: snprintf(pbuf, sizeof(pbuf), "%s/%s", fpath,
615: ent->d_name);
1.14 jfb 616: cfp = cvs_file_lget(pbuf, flags, cf);
1.11 jfb 617: if (cfp != NULL) {
1.26 jfb 618: if (cfp->cf_type == DT_DIR) {
619: TAILQ_INSERT_TAIL(&dirs, cfp, cf_list);
1.16 jfb 620: ndirs++;
1.38 ! deraadt 621: } else {
1.26 jfb 622: TAILQ_INSERT_TAIL(&(cdp->cd_files), cfp,
1.11 jfb 623: cf_list);
1.16 jfb 624: cdp->cd_nfiles++;
625: }
1.11 jfb 626: }
1.4 jfb 627: }
1.11 jfb 628: } while (ret > 0);
1.14 jfb 629:
1.34 jfb 630: #if 1
631: cvs_ent_close(cdp->cd_ent);
632: cdp->cd_ent = NULL;
633: #endif
634:
1.10 jfb 635: if (flags & CF_SORT) {
1.16 jfb 636: cvs_file_sort(&(cdp->cd_files), cdp->cd_nfiles);
637: cvs_file_sort(&dirs, ndirs);
1.10 jfb 638: }
1.26 jfb 639:
640: while (!TAILQ_EMPTY(&dirs)) {
641: cfp = TAILQ_FIRST(&dirs);
642: TAILQ_REMOVE(&dirs, cfp, cf_list);
1.10 jfb 643: TAILQ_INSERT_TAIL(&(cdp->cd_files), cfp, cf_list);
1.26 jfb 644: }
1.16 jfb 645: cdp->cd_nfiles += ndirs;
1.3 jfb 646:
647: (void)close(fd);
648:
1.6 jfb 649: return (0);
1.3 jfb 650: }
651:
652:
653: /*
654: * cvs_file_free()
655: *
656: * Free a cvs_file structure and its contents.
657: */
658:
659: void
1.14 jfb 660: cvs_file_free(CVSFILE *cf)
1.3 jfb 661: {
662: if (cf->cf_ddat != NULL)
663: cvs_file_freedir(cf->cf_ddat);
664: free(cf);
1.5 jfb 665: }
666:
667:
668: /*
669: * cvs_file_examine()
670: *
671: * Examine the contents of the CVS file structure <cf> with the function
672: * <exam>. The function is called for all subdirectories and files of the
673: * root file.
674: */
675:
676: int
677: cvs_file_examine(CVSFILE *cf, int (*exam)(CVSFILE *, void *), void *arg)
678: {
679: int ret;
1.14 jfb 680: CVSFILE *fp;
1.5 jfb 681:
682: if (cf->cf_type == DT_DIR) {
683: ret = (*exam)(cf, arg);
1.10 jfb 684: TAILQ_FOREACH(fp, &(cf->cf_ddat->cd_files), cf_list) {
1.5 jfb 685: ret = cvs_file_examine(fp, exam, arg);
686: if (ret == -1)
1.13 jfb 687: break;
1.5 jfb 688: }
1.38 ! deraadt 689: } else
1.13 jfb 690: ret = (*exam)(cf, arg);
691:
692: return (ret);
1.3 jfb 693: }
694:
695:
696: /*
697: * cvs_file_freedir()
698: *
699: * Free a cvs_dir structure and its contents.
700: */
701:
702: static void
703: cvs_file_freedir(struct cvs_dir *cd)
704: {
1.14 jfb 705: CVSFILE *cfp;
1.3 jfb 706:
707: if (cd->cd_root != NULL)
708: cvsroot_free(cd->cd_root);
709: if (cd->cd_repo != NULL)
710: free(cd->cd_repo);
711:
1.14 jfb 712: if (cd->cd_ent != NULL)
713: cvs_ent_close(cd->cd_ent);
714:
1.10 jfb 715: while (!TAILQ_EMPTY(&(cd->cd_files))) {
716: cfp = TAILQ_FIRST(&(cd->cd_files));
717: TAILQ_REMOVE(&(cd->cd_files), cfp, cf_list);
1.3 jfb 718: cvs_file_free(cfp);
719: }
720: }
721:
722:
723: /*
724: * cvs_file_sort()
725: *
1.16 jfb 726: * Sort a list of cvs file structures according to their filename. The list
727: * <flp> is modified according to the sorting algorithm. The number of files
728: * in the list must be given by <nfiles>.
729: * Returns 0 on success, or -1 on failure.
1.3 jfb 730: */
731:
732: static int
1.16 jfb 733: cvs_file_sort(struct cvs_flist *flp, u_int nfiles)
1.3 jfb 734: {
735: int i;
736: size_t nb;
1.16 jfb 737: CVSFILE *cf, **cfvec;
738:
739: cfvec = (CVSFILE **)calloc(nfiles, sizeof(CVSFILE *));
740: if (cfvec == NULL) {
741: cvs_log(LP_ERRNO, "failed to allocate sorting vector");
742: return (-1);
743: }
1.3 jfb 744:
745: i = 0;
1.10 jfb 746: TAILQ_FOREACH(cf, flp, cf_list) {
1.16 jfb 747: if (i == (int)nfiles) {
1.3 jfb 748: cvs_log(LP_WARN, "too many files to sort");
1.16 jfb 749: /* rebuild the list and abort sorting */
750: while (--i >= 0)
751: TAILQ_INSERT_HEAD(flp, cfvec[i], cf_list);
752: free(cfvec);
1.3 jfb 753: return (-1);
754: }
1.16 jfb 755: cfvec[i++] = cf;
1.3 jfb 756:
757: /* now unlink it from the list,
758: * we'll put it back in order later
759: */
1.10 jfb 760: TAILQ_REMOVE(flp, cf, cf_list);
1.3 jfb 761: }
762:
763: /* clear the list just in case */
1.10 jfb 764: TAILQ_INIT(flp);
1.3 jfb 765: nb = (size_t)i;
766:
767: heapsort(cfvec, nb, sizeof(cf), cvs_file_cmp);
768:
769: /* rebuild the list from the bottom up */
770: for (i = (int)nb - 1; i >= 0; i--)
1.10 jfb 771: TAILQ_INSERT_HEAD(flp, cfvec[i], cf_list);
1.3 jfb 772:
1.16 jfb 773: free(cfvec);
1.3 jfb 774: return (0);
775: }
776:
777:
778: static int
779: cvs_file_cmp(const void *f1, const void *f2)
780: {
1.14 jfb 781: CVSFILE *cf1, *cf2;
782: cf1 = *(CVSFILE **)f1;
783: cf2 = *(CVSFILE **)f2;
1.34 jfb 784: return cvs_file_cmpname(CVS_FILE_NAME(cf1), CVS_FILE_NAME(cf2));
1.6 jfb 785: }
786:
787:
1.34 jfb 788: /*
789: * cvs_file_alloc()
790: *
791: * Allocate a CVSFILE structure and initialize its internals.
792: */
793:
1.6 jfb 794: CVSFILE*
795: cvs_file_alloc(const char *path, u_int type)
796: {
797: size_t len;
798: char pbuf[MAXPATHLEN];
1.34 jfb 799: const char *fnp;
1.6 jfb 800: CVSFILE *cfp;
801: struct cvs_dir *ddat;
802:
1.14 jfb 803: cfp = (CVSFILE *)malloc(sizeof(*cfp));
1.6 jfb 804: if (cfp == NULL) {
805: cvs_log(LP_ERRNO, "failed to allocate CVS file data");
806: return (NULL);
807: }
808: memset(cfp, 0, sizeof(*cfp));
809:
810: /* ditch trailing slashes */
811: strlcpy(pbuf, path, sizeof(pbuf));
812: len = strlen(pbuf);
813: while (pbuf[len - 1] == '/')
814: pbuf[--len] = '\0';
815:
1.34 jfb 816: fnp = strrchr(path, '/');
817: if (fnp == NULL)
818: fnp = path;
819: else
820: fnp++;
821:
822: cfp->cf_name = cvs_file_getname(fnp);
823: if (cfp->cf_name == NULL) {
1.35 jfb 824: cvs_log(LP_ERR, "failed to get file name from table");
1.6 jfb 825: return (NULL);
826: }
827: cfp->cf_type = type;
828: cfp->cf_cvstat = CVS_FST_UNKNOWN;
829:
830: if (type == DT_DIR) {
831: ddat = (struct cvs_dir *)malloc(sizeof(*ddat));
832: if (ddat == NULL) {
833: cvs_file_free(cfp);
834: return (NULL);
835: }
836: memset(ddat, 0, sizeof(*ddat));
1.10 jfb 837: TAILQ_INIT(&(ddat->cd_files));
1.6 jfb 838: cfp->cf_ddat = ddat;
839: }
840: return (cfp);
1.1 jfb 841: }
1.14 jfb 842:
843:
844: /*
845: * cvs_file_lget()
846: *
847: * Get the file and link it with the parent right away.
1.22 jfb 848: * Returns a pointer to the created file structure on success, or NULL on
849: * failure.
1.14 jfb 850: */
851:
852: static CVSFILE*
853: cvs_file_lget(const char *path, int flags, CVSFILE *parent)
854: {
855: int cwd;
856: struct stat st;
857: CVSFILE *cfp;
1.34 jfb 858: struct cvs_ent *ent = NULL;
1.14 jfb 859:
860: if (strcmp(path, ".") == 0)
861: cwd = 1;
862: else
863: cwd = 0;
864:
865: if (stat(path, &st) == -1) {
866: cvs_log(LP_ERRNO, "failed to stat %s", path);
867: return (NULL);
868: }
869:
870: cfp = cvs_file_alloc(path, IFTODT(st.st_mode));
871: if (cfp == NULL) {
872: cvs_log(LP_ERRNO, "failed to allocate CVS file data");
873: return (NULL);
874: }
875: cfp->cf_parent = parent;
1.22 jfb 876: cfp->cf_mode = st.st_mode & ACCESSPERMS;
877: cfp->cf_mtime = st.st_mtime;
1.14 jfb 878:
879: if ((parent != NULL) && (CVS_DIR_ENTRIES(parent) != NULL)) {
1.34 jfb 880: ent = cvs_ent_get(CVS_DIR_ENTRIES(parent), CVS_FILE_NAME(cfp));
1.14 jfb 881: }
882:
1.26 jfb 883: if (ent == NULL) {
1.14 jfb 884: cfp->cf_cvstat = (cwd == 1) ?
885: CVS_FST_UPTODATE : CVS_FST_UNKNOWN;
1.38 ! deraadt 886: } else {
1.14 jfb 887: /* always show directories as up-to-date */
888: if (ent->ce_type == CVS_ENT_DIR)
889: cfp->cf_cvstat = CVS_FST_UPTODATE;
890: else if (rcsnum_cmp(ent->ce_rev, cvs_addedrev, 2) == 0)
891: cfp->cf_cvstat = CVS_FST_ADDED;
892: else {
893: /* check last modified time */
1.36 jfb 894: if (ent->ce_mtime >= (time_t)st.st_mtime)
1.14 jfb 895: cfp->cf_cvstat = CVS_FST_UPTODATE;
896: else
897: cfp->cf_cvstat = CVS_FST_MODIFIED;
898: }
899: }
900:
1.26 jfb 901: if ((cfp->cf_type == DT_DIR) && (cvs_file_getdir(cfp, flags) < 0)) {
902: cvs_file_free(cfp);
903: return (NULL);
1.14 jfb 904: }
905:
906: return (cfp);
1.23 jfb 907: }
908:
909:
910: static int
911: cvs_file_cmpname(const char *name1, const char *name2)
912: {
913: return (cvs_nocase == 0) ? (strcmp(name1, name2)) :
914: (strcasecmp(name1, name2));
1.34 jfb 915: }
916:
917:
918: /*
919: * cvs_file_hashname()
920: *
921: * Generate an 8 bit hash value from the name of a file.
922: * XXX Improve my distribution!
923: */
924:
925: static u_int8_t
926: cvs_file_hashname(const char *name)
927: {
928: const char *np;
929: u_int8_t h;
930:
931: h = 0xb5;
932: for (np = name; *np != '\0'; np++)
933: h ^= (*np << 3 ^ *np >> 1);
934:
935: return (h);
936: }
937:
938:
939: /*
940: * cvs_file_getname()
941: *
942: * Look for the file name <name> in the filename hash table.
943: * If no entry is found for that name, a new one is created and inserted into
944: * the table. The name's reference count is increased.
945: */
946:
947: static struct cvs_fname*
948: cvs_file_getname(const char *name)
949: {
950: u_int8_t h;
951: struct cvs_fname *fnp;
952:
953: h = cvs_file_hashname(name);
954:
955: SLIST_FOREACH(fnp, &(cvs_fnht[h]), cf_list)
956: if (strcmp(name, fnp->cf_name) == 0) {
957: fnp->cf_ref++;
958: break;
959: }
960:
961: if (fnp == NULL) {
962: fnp = (struct cvs_fname *)malloc(sizeof(*fnp));
963: if (fnp == NULL) {
964: cvs_log(LP_ERRNO,
965: "failed to allocate new file name entry");
966: return (NULL);
967: }
968:
969: fnp->cf_name = strdup(name);
970: fnp->cf_ref = 1;
971: SLIST_INSERT_HEAD(&(cvs_fnht[h]), fnp, cf_list);
972: }
973:
974: return (fnp);
1.14 jfb 975: }
![[BACK]](/icons/back.gif){kind=icon}
Return to file.c CVS log ![[TXT]](/icons/text.gif){kind=icon}
![[DIR]](/icons/dir.gif){kind=icon}
Up to [local] / src / usr.bin / cvs