Annotation of src/usr.bin/cvs/file.c, Revision 1.42
1.42 ! jfb 1: /* $OpenBSD: file.c,v 1.41 2004/12/08 19:44:28 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: static const char *cvs_ign_std[] = {
63: ".",
64: "..",
65: "*.o",
66: "*.so",
67: "*.bak",
68: "*.orig",
69: "*.rej",
70: "*.exe",
71: "*.depend",
72: "CVS",
73: "core",
1.8 jfb 74: ".#*",
1.1 jfb 75: #ifdef OLD_SMELLY_CRUFT
76: "RCSLOG",
77: "tags",
78: "TAGS",
79: "RCS",
80: "SCCS",
81: "#*",
82: ",*",
83: #endif
84: };
85:
86:
1.11 jfb 87: /*
1.34 jfb 88: * Filename hash table used to avoid duplication of name strings when working
89: * on large source trees with common parts.
90: */
91: SLIST_HEAD(cvs_fhb, cvs_fname);
92:
93: static struct cvs_fhb cvs_fnht[CVS_FILE_NBUCKETS];
94:
95:
96:
97: /*
1.11 jfb 98: * Entries in the CVS/Entries file with a revision of '0' have only been
99: * added. Compare against this revision to see if this is the case
100: */
1.4 jfb 101: static RCSNUM *cvs_addedrev;
102:
103:
1.1 jfb 104: TAILQ_HEAD(, cvs_ignpat) cvs_ign_pats;
105:
106:
1.34 jfb 107: static int cvs_file_getdir (CVSFILE *, int);
108: static void cvs_file_freedir (struct cvs_dir *);
109: static int cvs_file_sort (struct cvs_flist *, u_int);
110: static int cvs_file_cmp (const void *, const void *);
111: static int cvs_file_cmpname (const char *, const char *);
112: static u_int8_t cvs_file_hashname (const char *);
113: static struct cvs_fname* cvs_file_getname (const char *);
114: static CVSFILE* cvs_file_alloc (const char *, u_int);
115: static CVSFILE* cvs_file_lget (const char *, int, CVSFILE *);
1.3 jfb 116:
117:
118:
1.1 jfb 119: /*
120: * cvs_file_init()
121: *
122: */
123: int
124: cvs_file_init(void)
125: {
126: int i;
127: size_t len;
128: char path[MAXPATHLEN], buf[MAXNAMLEN];
129: FILE *ifp;
130: struct passwd *pwd;
131:
1.34 jfb 132: /* initialize the filename hash table */
133: for (i = 0; i < CVS_FILE_NBUCKETS; i++)
134: SLIST_INIT(&(cvs_fnht[i]));
135:
1.1 jfb 136: TAILQ_INIT(&cvs_ign_pats);
137:
1.4 jfb 138: cvs_addedrev = rcsnum_alloc();
139: rcsnum_aton("0", NULL, cvs_addedrev);
140:
1.1 jfb 141: /* standard patterns to ignore */
1.10 jfb 142: for (i = 0; i < (int)(sizeof(cvs_ign_std)/sizeof(char *)); i++)
1.26 jfb 143: cvs_file_ignore(cvs_ign_std[i]);
1.1 jfb 144:
145: /* read the cvsignore file in the user's home directory, if any */
146: pwd = getpwuid(getuid());
147: if (pwd != NULL) {
148: snprintf(path, sizeof(path), "%s/.cvsignore", pwd->pw_dir);
149: ifp = fopen(path, "r");
150: if (ifp == NULL) {
151: if (errno != ENOENT)
1.34 jfb 152: cvs_log(LP_ERRNO,
153: "failed to open user's cvsignore", path);
1.38 deraadt 154: } else {
1.1 jfb 155: while (fgets(buf, sizeof(buf), ifp) != NULL) {
156: len = strlen(buf);
157: if (len == 0)
158: continue;
159: if (buf[len - 1] != '\n') {
160: cvs_log(LP_ERR, "line too long in `%s'",
161: path);
162: }
163: buf[--len] = '\0';
164: cvs_file_ignore(buf);
165: }
166: (void)fclose(ifp);
167: }
168: }
169:
170: return (0);
171: }
172:
173:
174: /*
175: * cvs_file_ignore()
176: *
177: * Add the pattern <pat> to the list of patterns for files to ignore.
178: * Returns 0 on success, or -1 on failure.
179: */
180: int
181: cvs_file_ignore(const char *pat)
182: {
183: char *cp;
184: struct cvs_ignpat *ip;
185:
186: ip = (struct cvs_ignpat *)malloc(sizeof(*ip));
187: if (ip == NULL) {
188: cvs_log(LP_ERR, "failed to allocate space for ignore pattern");
189: return (-1);
190: }
191:
192: strlcpy(ip->ip_pat, pat, sizeof(ip->ip_pat));
193:
194: /* check if we will need globbing for that pattern */
195: ip->ip_flags = CVS_IGN_STATIC;
196: for (cp = ip->ip_pat; *cp != '\0'; cp++) {
197: if (CVS_CHAR_ISMETA(*cp)) {
198: ip->ip_flags &= ~CVS_IGN_STATIC;
199: break;
200: }
201: }
202:
203: TAILQ_INSERT_TAIL(&cvs_ign_pats, ip, ip_list);
204:
205: return (0);
206: }
207:
208:
209: /*
1.5 jfb 210: * cvs_file_chkign()
1.1 jfb 211: *
212: * Returns 1 if the filename <file> is matched by one of the ignore
213: * patterns, or 0 otherwise.
214: */
215: int
1.5 jfb 216: cvs_file_chkign(const char *file)
1.1 jfb 217: {
1.23 jfb 218: int flags;
1.1 jfb 219: struct cvs_ignpat *ip;
220:
1.23 jfb 221: flags = FNM_PERIOD;
222: if (cvs_nocase)
223: flags |= FNM_CASEFOLD;
224:
1.1 jfb 225: TAILQ_FOREACH(ip, &cvs_ign_pats, ip_list) {
226: if (ip->ip_flags & CVS_IGN_STATIC) {
1.23 jfb 227: if (cvs_file_cmpname(file, ip->ip_pat) == 0)
1.1 jfb 228: return (1);
1.38 deraadt 229: } else if (fnmatch(ip->ip_pat, file, flags) == 0)
1.1 jfb 230: return (1);
231: }
232:
233: return (0);
234: }
235:
236:
237: /*
1.6 jfb 238: * cvs_file_create()
1.1 jfb 239: *
1.6 jfb 240: * Create a new file whose path is specified in <path> and of type <type>.
1.26 jfb 241: * If the type is DT_DIR, the CVS administrative repository and files will be
242: * created.
1.25 jfb 243: * Returns the created file on success, or NULL on failure.
1.1 jfb 244: */
1.6 jfb 245: CVSFILE*
1.34 jfb 246: cvs_file_create(CVSFILE *parent, const char *path, u_int type, mode_t mode)
1.1 jfb 247: {
1.6 jfb 248: int fd;
1.34 jfb 249: char fp[MAXPATHLEN];
1.6 jfb 250: CVSFILE *cfp;
1.1 jfb 251:
1.6 jfb 252: cfp = cvs_file_alloc(path, type);
253: if (cfp == NULL)
254: return (NULL);
1.26 jfb 255:
1.22 jfb 256: cfp->cf_mode = mode;
1.34 jfb 257: cfp->cf_parent = parent;
1.1 jfb 258:
1.34 jfb 259: if (type == DT_DIR) {
260: cfp->cf_ddat->cd_root = cvsroot_get(path);
261: cfp->cf_ddat->cd_repo = strdup(cvs_file_getpath(cfp,
262: fp, sizeof(fp)));
263: if (cfp->cf_ddat->cd_repo == NULL) {
264: cvs_file_free(cfp);
265: return (NULL);
266: }
1.33 joris 267:
1.26 jfb 268: if ((mkdir(path, mode) == -1) || (cvs_mkadmin(cfp, mode) < 0)) {
1.6 jfb 269: cvs_file_free(cfp);
270: return (NULL);
271: }
1.26 jfb 272:
1.27 jfb 273: cfp->cf_ddat->cd_ent = cvs_ent_open(path, O_RDWR);
1.38 deraadt 274: } else {
1.6 jfb 275: fd = open(path, O_WRONLY|O_CREAT|O_EXCL, mode);
276: if (fd == -1) {
277: cvs_file_free(cfp);
1.1 jfb 278: return (NULL);
279: }
1.6 jfb 280: (void)close(fd);
1.1 jfb 281: }
282:
1.6 jfb 283: return (cfp);
1.3 jfb 284: }
285:
286:
287: /*
1.35 jfb 288: * cvs_file_copy()
289: *
290: * Allocate space to create a copy of the file <orig>. The copy inherits all
291: * of the original's attributes, but does not inherit its children if the
292: * original file is a directory. Note that files copied using this mechanism
293: * are linked to their parent, but the parent has no link to the file. This
294: * is so cvs_file_getpath() works.
295: * Returns the copied file on success, or NULL on failure. The returned
296: * structure should be freed using cvs_file_free().
297: */
298: CVSFILE*
299: cvs_file_copy(CVSFILE *orig)
300: {
301: char path[MAXPATHLEN];
302: CVSFILE *cfp;
303:
304: cvs_file_getpath(orig, path, sizeof(path));
305:
306: cfp = cvs_file_alloc(path, orig->cf_type);
307: if (cfp == NULL)
308: return (NULL);
309:
310: cfp->cf_parent = orig->cf_parent;
311: cfp->cf_mode = orig->cf_mode;
312: cfp->cf_mtime = orig->cf_mtime;
313: cfp->cf_cvstat = orig->cf_cvstat;
314:
315: if (orig->cf_type == DT_DIR) {
316: /* XXX copy CVS directory attributes */
317: }
318:
319: return (cfp);
320: }
321:
322:
323: /*
1.3 jfb 324: * cvs_file_get()
325: *
326: * Load a cvs_file structure with all the information pertaining to the file
327: * <path>.
1.4 jfb 328: * The <flags> parameter specifies various flags that alter the behaviour of
1.21 jfb 329: * the function. The CF_RECURSE flag causes the function to recursively load
330: * subdirectories when <path> is a directory.
331: * The CF_SORT flag causes the files to be sorted in alphabetical order upon
332: * loading. The special case of "." as a path specification generates
333: * recursion for a single level and is equivalent to calling cvs_file_get() on
334: * all files of that directory.
1.3 jfb 335: * Returns a pointer to the cvs file structure, which must later be freed
336: * with cvs_file_free().
337: */
338:
1.14 jfb 339: CVSFILE*
1.3 jfb 340: cvs_file_get(const char *path, int flags)
341: {
1.14 jfb 342: return cvs_file_lget(path, flags, NULL);
1.9 jfb 343: }
344:
345:
346: /*
347: * cvs_file_getspec()
348: *
349: * Load a specific set of files whose paths are given in the vector <fspec>,
350: * whose size is given in <fsn>.
351: * Returns a pointer to the lowest common subdirectory to all specified
352: * files.
353: */
354: CVSFILE*
355: cvs_file_getspec(char **fspec, int fsn, int flags)
356: {
1.26 jfb 357: int i;
358: char *sp, *np, pcopy[MAXPATHLEN];
359: CVSFILE *base, *cf, *nf;
360:
361: base = cvs_file_get(".", 0);
362: if (base == NULL)
363: return (NULL);
364:
365: for (i = 0; i < fsn; i++) {
366: strlcpy(pcopy, fspec[i], sizeof(pcopy));
367: cf = base;
368: sp = pcopy;
369:
370: do {
371: np = strchr(sp, '/');
372: if (np != NULL)
373: *np = '\0';
374: nf = cvs_file_find(cf, sp);
375: if (nf == NULL) {
376: nf = cvs_file_lget(pcopy, 0, cf);
377: if (nf == NULL) {
378: cvs_file_free(base);
379: return (NULL);
380: }
381:
382: cvs_file_attach(cf, nf);
383: }
384:
385: if (np != NULL) {
386: *np = '/';
387: sp = np + 1;
388: }
389:
390: cf = nf;
391: } while (np != NULL);
392: }
393:
394: return (base);
1.3 jfb 395: }
396:
397:
398: /*
1.13 jfb 399: * cvs_file_find()
400: *
401: * Find the pointer to a CVS file entry within the file hierarchy <hier>.
402: * The file's pathname <path> must be relative to the base of <hier>.
403: * Returns the entry on success, or NULL on failure.
404: */
405: CVSFILE*
406: cvs_file_find(CVSFILE *hier, const char *path)
407: {
408: char *pp, *sp, pbuf[MAXPATHLEN];
409: CVSFILE *sf, *cf;
410:
411: strlcpy(pbuf, path, sizeof(pbuf));
412:
413: cf = hier;
414: pp = pbuf;
415: do {
416: sp = strchr(pp, '/');
417: if (sp != NULL)
1.24 jfb 418: *(sp++) = '\0';
1.13 jfb 419:
420: /* special case */
421: if (*pp == '.') {
422: if ((*(pp + 1) == '.') && (*(pp + 2) == '\0')) {
423: /* request to go back to parent */
424: if (cf->cf_parent == NULL) {
425: cvs_log(LP_NOTICE,
426: "path %s goes back too far", path);
427: return (NULL);
428: }
429: cf = cf->cf_parent;
430: continue;
1.38 deraadt 431: } else if (*(pp + 1) == '\0')
1.13 jfb 432: continue;
433: }
434:
435: TAILQ_FOREACH(sf, &(cf->cf_ddat->cd_files), cf_list)
1.34 jfb 436: if (cvs_file_cmpname(pp, CVS_FILE_NAME(sf)) == 0)
1.13 jfb 437: break;
438: if (sf == NULL)
439: return (NULL);
440:
441: cf = sf;
442: pp = sp;
443: } while (sp != NULL);
444:
1.24 jfb 445: return (cf);
1.13 jfb 446: }
447:
448:
449: /*
1.34 jfb 450: * cvs_file_getpath()
451: *
452: * Get the full path of the file <file> and store it in <buf>, which is of
453: * size <len>. For portability, it is recommended that <buf> always be
454: * at least MAXPATHLEN bytes long.
455: * Returns a pointer to the start of the path on success, or NULL on failure.
456: */
457: char*
458: cvs_file_getpath(CVSFILE *file, char *buf, size_t len)
459: {
460: u_int i;
461: char *fp, *namevec[CVS_FILE_MAXDEPTH];
462: CVSFILE *top;
463:
464: buf[0] = '\0';
465: i = CVS_FILE_MAXDEPTH;
466: memset(namevec, 0, sizeof(namevec));
467:
468: /* find the top node */
469: for (top = file; (top != NULL) && (i > 0); top = top->cf_parent) {
470: fp = CVS_FILE_NAME(top);
471:
472: /* skip self-references */
473: if ((fp[0] == '.') && (fp[1] == '\0'))
474: continue;
475: namevec[--i] = fp;
476: }
477:
478: if (i == 0)
479: return (NULL);
480: else if (i == CVS_FILE_MAXDEPTH) {
481: strlcpy(buf, ".", len);
482: return (buf);
483: }
484:
485: while (i < CVS_FILE_MAXDEPTH - 1) {
486: strlcat(buf, namevec[i++], len);
487: strlcat(buf, "/", len);
488: }
489: strlcat(buf, namevec[i], len);
490:
491: return (buf);
492: }
493:
494:
495: /*
1.22 jfb 496: * cvs_file_attach()
497: *
498: * Attach the file <file> as one of the children of parent <parent>, which
499: * has to be a file of type DT_DIR.
500: * Returns 0 on success, or -1 on failure.
501: */
502: int
503: cvs_file_attach(CVSFILE *parent, CVSFILE *file)
504: {
1.23 jfb 505: struct cvs_dir *dp;
1.22 jfb 506:
507: if (parent->cf_type != DT_DIR)
508: return (-1);
509:
1.23 jfb 510: dp = parent->cf_ddat;
511:
512: TAILQ_INSERT_TAIL(&(dp->cd_files), file, cf_list);
513: dp->cd_nfiles++;
1.22 jfb 514: file->cf_parent = parent;
515:
516: return (0);
517: }
518:
519:
520: /*
1.3 jfb 521: * cvs_file_getdir()
522: *
523: * Get a cvs directory structure for the directory whose path is <dir>.
1.30 jfb 524: * This function should not free the directory information on error, as this
525: * is performed by cvs_file_free().
1.3 jfb 526: */
1.6 jfb 527: static int
1.14 jfb 528: cvs_file_getdir(CVSFILE *cf, int flags)
1.3 jfb 529: {
1.13 jfb 530: int ret, fd;
1.16 jfb 531: u_int ndirs;
1.3 jfb 532: long base;
1.13 jfb 533: void *dp, *ep;
1.34 jfb 534: char fbuf[2048], pbuf[MAXPATHLEN], fpath[MAXPATHLEN];
1.3 jfb 535: struct dirent *ent;
1.14 jfb 536: CVSFILE *cfp;
1.20 jfb 537: struct stat st;
1.3 jfb 538: struct cvs_dir *cdp;
1.10 jfb 539: struct cvs_flist dirs;
1.3 jfb 540:
1.18 jfb 541: ndirs = 0;
1.10 jfb 542: TAILQ_INIT(&dirs);
1.7 jfb 543: cdp = cf->cf_ddat;
544:
1.34 jfb 545: cvs_file_getpath(cf, fpath, sizeof(fpath));
546:
1.26 jfb 547: if (cf->cf_cvstat != CVS_FST_UNKNOWN) {
1.34 jfb 548: cdp->cd_root = cvsroot_get(fpath);
1.30 jfb 549: if (cdp->cd_root == NULL)
1.26 jfb 550: return (-1);
1.3 jfb 551:
1.26 jfb 552: if (flags & CF_MKADMIN)
553: cvs_mkadmin(cf, 0755);
1.14 jfb 554:
1.26 jfb 555: /* if the CVS administrative directory exists, load the info */
1.34 jfb 556: snprintf(pbuf, sizeof(pbuf), "%s/" CVS_PATH_CVSDIR, fpath);
1.26 jfb 557: if ((stat(pbuf, &st) == 0) && S_ISDIR(st.st_mode)) {
1.34 jfb 558: if (cvs_readrepo(fpath, pbuf, sizeof(pbuf)) == 0) {
1.26 jfb 559: cdp->cd_repo = strdup(pbuf);
560: if (cdp->cd_repo == NULL) {
1.28 jfb 561: cvs_log(LP_ERRNO,
562: "failed to dup repository string");
1.26 jfb 563: return (-1);
564: }
1.20 jfb 565: }
1.26 jfb 566:
1.37 jfb 567: cdp->cd_ent = cvs_ent_open(fpath, O_RDONLY);
1.20 jfb 568: }
569: }
1.14 jfb 570:
1.26 jfb 571: if (!(flags & CF_RECURSE) || (cf->cf_cvstat == CVS_FST_UNKNOWN))
572: return (0);
573:
1.34 jfb 574: fd = open(fpath, O_RDONLY);
1.3 jfb 575: if (fd == -1) {
1.34 jfb 576: cvs_log(LP_ERRNO, "failed to open `%s'", fpath);
1.6 jfb 577: return (-1);
1.3 jfb 578: }
579:
1.11 jfb 580: do {
581: ret = getdirentries(fd, fbuf, sizeof(fbuf), &base);
582: if (ret == -1) {
583: cvs_log(LP_ERRNO, "failed to get directory entries");
584: (void)close(fd);
585: return (-1);
586: }
1.10 jfb 587:
1.11 jfb 588: dp = fbuf;
589: ep = fbuf + (size_t)ret;
590: while (dp < ep) {
591: ent = (struct dirent *)dp;
1.32 jfb 592: dp += ent->d_reclen;
1.31 jfb 593: if (ent->d_fileno == 0)
594: continue;
1.11 jfb 595:
596: if ((flags & CF_IGNORE) && cvs_file_chkign(ent->d_name))
1.24 jfb 597: continue;
598:
599: if ((flags & CF_NOSYMS) && (ent->d_type == DT_LNK))
1.11 jfb 600: continue;
601:
1.34 jfb 602: snprintf(pbuf, sizeof(pbuf), "%s/%s", fpath,
603: ent->d_name);
1.14 jfb 604: cfp = cvs_file_lget(pbuf, flags, cf);
1.11 jfb 605: if (cfp != NULL) {
1.26 jfb 606: if (cfp->cf_type == DT_DIR) {
607: TAILQ_INSERT_TAIL(&dirs, cfp, cf_list);
1.16 jfb 608: ndirs++;
1.38 deraadt 609: } else {
1.26 jfb 610: TAILQ_INSERT_TAIL(&(cdp->cd_files), cfp,
1.11 jfb 611: cf_list);
1.16 jfb 612: cdp->cd_nfiles++;
613: }
1.11 jfb 614: }
1.4 jfb 615: }
1.11 jfb 616: } while (ret > 0);
1.14 jfb 617:
1.40 jfb 618: if (cdp->cd_ent != NULL) {
619: cvs_ent_close(cdp->cd_ent);
620: cdp->cd_ent = NULL;
621: }
1.34 jfb 622:
1.10 jfb 623: if (flags & CF_SORT) {
1.16 jfb 624: cvs_file_sort(&(cdp->cd_files), cdp->cd_nfiles);
625: cvs_file_sort(&dirs, ndirs);
1.10 jfb 626: }
1.26 jfb 627:
628: while (!TAILQ_EMPTY(&dirs)) {
629: cfp = TAILQ_FIRST(&dirs);
630: TAILQ_REMOVE(&dirs, cfp, cf_list);
1.10 jfb 631: TAILQ_INSERT_TAIL(&(cdp->cd_files), cfp, cf_list);
1.26 jfb 632: }
1.16 jfb 633: cdp->cd_nfiles += ndirs;
1.3 jfb 634:
635: (void)close(fd);
636:
1.6 jfb 637: return (0);
1.3 jfb 638: }
639:
640:
641: /*
642: * cvs_file_free()
643: *
644: * Free a cvs_file structure and its contents.
645: */
646: void
1.14 jfb 647: cvs_file_free(CVSFILE *cf)
1.3 jfb 648: {
649: if (cf->cf_ddat != NULL)
650: cvs_file_freedir(cf->cf_ddat);
651: free(cf);
1.5 jfb 652: }
653:
654:
655: /*
656: * cvs_file_examine()
657: *
658: * Examine the contents of the CVS file structure <cf> with the function
659: * <exam>. The function is called for all subdirectories and files of the
660: * root file.
661: */
662: int
663: cvs_file_examine(CVSFILE *cf, int (*exam)(CVSFILE *, void *), void *arg)
664: {
665: int ret;
1.14 jfb 666: CVSFILE *fp;
1.5 jfb 667:
668: if (cf->cf_type == DT_DIR) {
669: ret = (*exam)(cf, arg);
1.10 jfb 670: TAILQ_FOREACH(fp, &(cf->cf_ddat->cd_files), cf_list) {
1.5 jfb 671: ret = cvs_file_examine(fp, exam, arg);
672: if (ret == -1)
1.13 jfb 673: break;
1.5 jfb 674: }
1.38 deraadt 675: } else
1.13 jfb 676: ret = (*exam)(cf, arg);
677:
678: return (ret);
1.3 jfb 679: }
680:
681:
682: /*
683: * cvs_file_freedir()
684: *
685: * Free a cvs_dir structure and its contents.
686: */
687: static void
688: cvs_file_freedir(struct cvs_dir *cd)
689: {
1.14 jfb 690: CVSFILE *cfp;
1.3 jfb 691:
692: if (cd->cd_root != NULL)
693: cvsroot_free(cd->cd_root);
694: if (cd->cd_repo != NULL)
695: free(cd->cd_repo);
696:
1.14 jfb 697: if (cd->cd_ent != NULL)
698: cvs_ent_close(cd->cd_ent);
699:
1.10 jfb 700: while (!TAILQ_EMPTY(&(cd->cd_files))) {
701: cfp = TAILQ_FIRST(&(cd->cd_files));
702: TAILQ_REMOVE(&(cd->cd_files), cfp, cf_list);
1.3 jfb 703: cvs_file_free(cfp);
704: }
705: }
706:
707:
708: /*
709: * cvs_file_sort()
710: *
1.16 jfb 711: * Sort a list of cvs file structures according to their filename. The list
712: * <flp> is modified according to the sorting algorithm. The number of files
713: * in the list must be given by <nfiles>.
714: * Returns 0 on success, or -1 on failure.
1.3 jfb 715: */
716: static int
1.16 jfb 717: cvs_file_sort(struct cvs_flist *flp, u_int nfiles)
1.3 jfb 718: {
719: int i;
720: size_t nb;
1.16 jfb 721: CVSFILE *cf, **cfvec;
722:
723: cfvec = (CVSFILE **)calloc(nfiles, sizeof(CVSFILE *));
724: if (cfvec == NULL) {
725: cvs_log(LP_ERRNO, "failed to allocate sorting vector");
726: return (-1);
727: }
1.3 jfb 728:
729: i = 0;
1.10 jfb 730: TAILQ_FOREACH(cf, flp, cf_list) {
1.16 jfb 731: if (i == (int)nfiles) {
1.3 jfb 732: cvs_log(LP_WARN, "too many files to sort");
1.16 jfb 733: /* rebuild the list and abort sorting */
734: while (--i >= 0)
735: TAILQ_INSERT_HEAD(flp, cfvec[i], cf_list);
736: free(cfvec);
1.3 jfb 737: return (-1);
738: }
1.16 jfb 739: cfvec[i++] = cf;
1.3 jfb 740:
741: /* now unlink it from the list,
742: * we'll put it back in order later
743: */
1.10 jfb 744: TAILQ_REMOVE(flp, cf, cf_list);
1.3 jfb 745: }
746:
747: /* clear the list just in case */
1.10 jfb 748: TAILQ_INIT(flp);
1.3 jfb 749: nb = (size_t)i;
750:
751: heapsort(cfvec, nb, sizeof(cf), cvs_file_cmp);
752:
753: /* rebuild the list from the bottom up */
754: for (i = (int)nb - 1; i >= 0; i--)
1.10 jfb 755: TAILQ_INSERT_HEAD(flp, cfvec[i], cf_list);
1.3 jfb 756:
1.16 jfb 757: free(cfvec);
1.3 jfb 758: return (0);
759: }
760:
761:
762: static int
763: cvs_file_cmp(const void *f1, const void *f2)
764: {
1.41 jfb 765: const CVSFILE *cf1, *cf2;
766: cf1 = *(const CVSFILE **)f1;
767: cf2 = *(const CVSFILE **)f2;
1.34 jfb 768: return cvs_file_cmpname(CVS_FILE_NAME(cf1), CVS_FILE_NAME(cf2));
1.6 jfb 769: }
770:
771:
1.34 jfb 772: /*
773: * cvs_file_alloc()
774: *
775: * Allocate a CVSFILE structure and initialize its internals.
776: */
1.6 jfb 777: CVSFILE*
778: cvs_file_alloc(const char *path, u_int type)
779: {
780: size_t len;
781: char pbuf[MAXPATHLEN];
1.34 jfb 782: const char *fnp;
1.6 jfb 783: CVSFILE *cfp;
784: struct cvs_dir *ddat;
785:
1.14 jfb 786: cfp = (CVSFILE *)malloc(sizeof(*cfp));
1.6 jfb 787: if (cfp == NULL) {
788: cvs_log(LP_ERRNO, "failed to allocate CVS file data");
789: return (NULL);
790: }
791: memset(cfp, 0, sizeof(*cfp));
792:
793: /* ditch trailing slashes */
794: strlcpy(pbuf, path, sizeof(pbuf));
795: len = strlen(pbuf);
796: while (pbuf[len - 1] == '/')
797: pbuf[--len] = '\0';
798:
1.34 jfb 799: fnp = strrchr(path, '/');
800: if (fnp == NULL)
801: fnp = path;
802: else
803: fnp++;
804:
805: cfp->cf_name = cvs_file_getname(fnp);
806: if (cfp->cf_name == NULL) {
1.35 jfb 807: cvs_log(LP_ERR, "failed to get file name from table");
1.6 jfb 808: return (NULL);
809: }
810: cfp->cf_type = type;
811: cfp->cf_cvstat = CVS_FST_UNKNOWN;
812:
813: if (type == DT_DIR) {
814: ddat = (struct cvs_dir *)malloc(sizeof(*ddat));
815: if (ddat == NULL) {
1.41 jfb 816: cvs_log(LP_ERRNO, "failed to allocate directory data");
1.6 jfb 817: cvs_file_free(cfp);
818: return (NULL);
819: }
820: memset(ddat, 0, sizeof(*ddat));
1.10 jfb 821: TAILQ_INIT(&(ddat->cd_files));
1.6 jfb 822: cfp->cf_ddat = ddat;
823: }
824: return (cfp);
1.1 jfb 825: }
1.14 jfb 826:
827:
828: /*
829: * cvs_file_lget()
830: *
831: * Get the file and link it with the parent right away.
1.22 jfb 832: * Returns a pointer to the created file structure on success, or NULL on
833: * failure.
1.14 jfb 834: */
835: static CVSFILE*
836: cvs_file_lget(const char *path, int flags, CVSFILE *parent)
837: {
838: int cwd;
839: struct stat st;
840: CVSFILE *cfp;
1.34 jfb 841: struct cvs_ent *ent = NULL;
1.14 jfb 842:
843: if (strcmp(path, ".") == 0)
844: cwd = 1;
845: else
846: cwd = 0;
847:
848: if (stat(path, &st) == -1) {
849: cvs_log(LP_ERRNO, "failed to stat %s", path);
850: return (NULL);
851: }
852:
853: cfp = cvs_file_alloc(path, IFTODT(st.st_mode));
1.41 jfb 854: if (cfp == NULL)
1.14 jfb 855: return (NULL);
856: cfp->cf_parent = parent;
1.22 jfb 857: cfp->cf_mode = st.st_mode & ACCESSPERMS;
858: cfp->cf_mtime = st.st_mtime;
1.14 jfb 859:
860: if ((parent != NULL) && (CVS_DIR_ENTRIES(parent) != NULL)) {
1.34 jfb 861: ent = cvs_ent_get(CVS_DIR_ENTRIES(parent), CVS_FILE_NAME(cfp));
1.14 jfb 862: }
863:
1.26 jfb 864: if (ent == NULL) {
1.14 jfb 865: cfp->cf_cvstat = (cwd == 1) ?
866: CVS_FST_UPTODATE : CVS_FST_UNKNOWN;
1.38 deraadt 867: } else {
1.14 jfb 868: /* always show directories as up-to-date */
869: if (ent->ce_type == CVS_ENT_DIR)
870: cfp->cf_cvstat = CVS_FST_UPTODATE;
871: else if (rcsnum_cmp(ent->ce_rev, cvs_addedrev, 2) == 0)
872: cfp->cf_cvstat = CVS_FST_ADDED;
873: else {
874: /* check last modified time */
1.36 jfb 875: if (ent->ce_mtime >= (time_t)st.st_mtime)
1.14 jfb 876: cfp->cf_cvstat = CVS_FST_UPTODATE;
877: else
878: cfp->cf_cvstat = CVS_FST_MODIFIED;
879: }
880: }
881:
1.26 jfb 882: if ((cfp->cf_type == DT_DIR) && (cvs_file_getdir(cfp, flags) < 0)) {
883: cvs_file_free(cfp);
884: return (NULL);
1.14 jfb 885: }
886:
887: return (cfp);
1.23 jfb 888: }
889:
890:
891: static int
892: cvs_file_cmpname(const char *name1, const char *name2)
893: {
894: return (cvs_nocase == 0) ? (strcmp(name1, name2)) :
895: (strcasecmp(name1, name2));
1.34 jfb 896: }
897:
898:
899: /*
900: * cvs_file_hashname()
901: *
902: * Generate an 8 bit hash value from the name of a file.
903: * XXX Improve my distribution!
904: */
905: static u_int8_t
906: cvs_file_hashname(const char *name)
907: {
908: const char *np;
909: u_int8_t h;
910:
911: h = 0xb5;
912: for (np = name; *np != '\0'; np++)
913: h ^= (*np << 3 ^ *np >> 1);
914:
915: return (h);
916: }
917:
918:
919: /*
920: * cvs_file_getname()
921: *
922: * Look for the file name <name> in the filename hash table.
923: * If no entry is found for that name, a new one is created and inserted into
924: * the table. The name's reference count is increased.
925: */
926: static struct cvs_fname*
927: cvs_file_getname(const char *name)
928: {
929: u_int8_t h;
930: struct cvs_fname *fnp;
931:
932: h = cvs_file_hashname(name);
933:
934: SLIST_FOREACH(fnp, &(cvs_fnht[h]), cf_list)
935: if (strcmp(name, fnp->cf_name) == 0) {
936: fnp->cf_ref++;
937: break;
938: }
939:
940: if (fnp == NULL) {
941: fnp = (struct cvs_fname *)malloc(sizeof(*fnp));
942: if (fnp == NULL) {
943: cvs_log(LP_ERRNO,
944: "failed to allocate new file name entry");
945: return (NULL);
946: }
947:
948: fnp->cf_name = strdup(name);
1.42 ! jfb 949: if (fnp->cf_name == NULL) {
! 950: cvs_log(LP_ERRNO, "failed to duplicate name");
! 951: free(fnp);
! 952: return (NULL);
! 953: }
! 954:
1.34 jfb 955: fnp->cf_ref = 1;
956: SLIST_INSERT_HEAD(&(cvs_fnht[h]), fnp, cf_list);
957: }
958:
959: return (fnp);
1.14 jfb 960: }
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