dir.con commit Merge branch 'tt/help' (8256c6e)
   1/*
   2 * This handles recursive filename detection with exclude
   3 * files, index knowledge etc..
   4 *
   5 * Copyright (C) Linus Torvalds, 2005-2006
   6 *               Junio Hamano, 2005-2006
   7 */
   8#include "cache.h"
   9#include "dir.h"
  10#include "refs.h"
  11
  12struct path_simplify {
  13        int len;
  14        const char *path;
  15};
  16
  17static int read_directory_recursive(struct dir_struct *dir,
  18        const char *path, const char *base, int baselen,
  19        int check_only, const struct path_simplify *simplify);
  20
  21int common_prefix(const char **pathspec)
  22{
  23        const char *path, *slash, *next;
  24        int prefix;
  25
  26        if (!pathspec)
  27                return 0;
  28
  29        path = *pathspec;
  30        slash = strrchr(path, '/');
  31        if (!slash)
  32                return 0;
  33
  34        prefix = slash - path + 1;
  35        while ((next = *++pathspec) != NULL) {
  36                int len = strlen(next);
  37                if (len >= prefix && !memcmp(path, next, prefix))
  38                        continue;
  39                len = prefix - 1;
  40                for (;;) {
  41                        if (!len)
  42                                return 0;
  43                        if (next[--len] != '/')
  44                                continue;
  45                        if (memcmp(path, next, len+1))
  46                                continue;
  47                        prefix = len + 1;
  48                        break;
  49                }
  50        }
  51        return prefix;
  52}
  53
  54/*
  55 * Does 'match' matches the given name?
  56 * A match is found if
  57 *
  58 * (1) the 'match' string is leading directory of 'name', or
  59 * (2) the 'match' string is a wildcard and matches 'name', or
  60 * (3) the 'match' string is exactly the same as 'name'.
  61 *
  62 * and the return value tells which case it was.
  63 *
  64 * It returns 0 when there is no match.
  65 */
  66static int match_one(const char *match, const char *name, int namelen)
  67{
  68        int matchlen;
  69
  70        /* If the match was just the prefix, we matched */
  71        matchlen = strlen(match);
  72        if (!matchlen)
  73                return MATCHED_RECURSIVELY;
  74
  75        /*
  76         * If we don't match the matchstring exactly,
  77         * we need to match by fnmatch
  78         */
  79        if (strncmp(match, name, matchlen))
  80                return !fnmatch(match, name, 0) ? MATCHED_FNMATCH : 0;
  81
  82        if (!name[matchlen])
  83                return MATCHED_EXACTLY;
  84        if (match[matchlen-1] == '/' || name[matchlen] == '/')
  85                return MATCHED_RECURSIVELY;
  86        return 0;
  87}
  88
  89/*
  90 * Given a name and a list of pathspecs, see if the name matches
  91 * any of the pathspecs.  The caller is also interested in seeing
  92 * all pathspec matches some names it calls this function with
  93 * (otherwise the user could have mistyped the unmatched pathspec),
  94 * and a mark is left in seen[] array for pathspec element that
  95 * actually matched anything.
  96 */
  97int match_pathspec(const char **pathspec, const char *name, int namelen, int prefix, char *seen)
  98{
  99        int retval;
 100        const char *match;
 101
 102        name += prefix;
 103        namelen -= prefix;
 104
 105        for (retval = 0; (match = *pathspec++) != NULL; seen++) {
 106                int how;
 107                if (retval && *seen == MATCHED_EXACTLY)
 108                        continue;
 109                match += prefix;
 110                how = match_one(match, name, namelen);
 111                if (how) {
 112                        if (retval < how)
 113                                retval = how;
 114                        if (*seen < how)
 115                                *seen = how;
 116                }
 117        }
 118        return retval;
 119}
 120
 121static int no_wildcard(const char *string)
 122{
 123        return string[strcspn(string, "*?[{")] == '\0';
 124}
 125
 126void add_exclude(const char *string, const char *base,
 127                 int baselen, struct exclude_list *which)
 128{
 129        struct exclude *x = xmalloc(sizeof (*x));
 130
 131        x->to_exclude = 1;
 132        if (*string == '!') {
 133                x->to_exclude = 0;
 134                string++;
 135        }
 136        x->pattern = string;
 137        x->patternlen = strlen(string);
 138        x->base = base;
 139        x->baselen = baselen;
 140        x->flags = 0;
 141        if (!strchr(string, '/'))
 142                x->flags |= EXC_FLAG_NODIR;
 143        if (no_wildcard(string))
 144                x->flags |= EXC_FLAG_NOWILDCARD;
 145        if (*string == '*' && no_wildcard(string+1))
 146                x->flags |= EXC_FLAG_ENDSWITH;
 147        ALLOC_GROW(which->excludes, which->nr + 1, which->alloc);
 148        which->excludes[which->nr++] = x;
 149}
 150
 151static int add_excludes_from_file_1(const char *fname,
 152                                    const char *base,
 153                                    int baselen,
 154                                    char **buf_p,
 155                                    struct exclude_list *which)
 156{
 157        struct stat st;
 158        int fd, i;
 159        size_t size;
 160        char *buf, *entry;
 161
 162        fd = open(fname, O_RDONLY);
 163        if (fd < 0 || fstat(fd, &st) < 0)
 164                goto err;
 165        size = xsize_t(st.st_size);
 166        if (size == 0) {
 167                close(fd);
 168                return 0;
 169        }
 170        buf = xmalloc(size+1);
 171        if (read_in_full(fd, buf, size) != size)
 172                goto err;
 173        close(fd);
 174
 175        if (buf_p)
 176                *buf_p = buf;
 177        buf[size++] = '\n';
 178        entry = buf;
 179        for (i = 0; i < size; i++) {
 180                if (buf[i] == '\n') {
 181                        if (entry != buf + i && entry[0] != '#') {
 182                                buf[i - (i && buf[i-1] == '\r')] = 0;
 183                                add_exclude(entry, base, baselen, which);
 184                        }
 185                        entry = buf + i + 1;
 186                }
 187        }
 188        return 0;
 189
 190 err:
 191        if (0 <= fd)
 192                close(fd);
 193        return -1;
 194}
 195
 196void add_excludes_from_file(struct dir_struct *dir, const char *fname)
 197{
 198        if (add_excludes_from_file_1(fname, "", 0, NULL,
 199                                     &dir->exclude_list[EXC_FILE]) < 0)
 200                die("cannot use %s as an exclude file", fname);
 201}
 202
 203static void prep_exclude(struct dir_struct *dir, const char *base, int baselen)
 204{
 205        struct exclude_list *el;
 206        struct exclude_stack *stk = NULL;
 207        int current;
 208
 209        if ((!dir->exclude_per_dir) ||
 210            (baselen + strlen(dir->exclude_per_dir) >= PATH_MAX))
 211                return; /* too long a path -- ignore */
 212
 213        /* Pop the ones that are not the prefix of the path being checked. */
 214        el = &dir->exclude_list[EXC_DIRS];
 215        while ((stk = dir->exclude_stack) != NULL) {
 216                if (stk->baselen <= baselen &&
 217                    !strncmp(dir->basebuf, base, stk->baselen))
 218                        break;
 219                dir->exclude_stack = stk->prev;
 220                while (stk->exclude_ix < el->nr)
 221                        free(el->excludes[--el->nr]);
 222                free(stk->filebuf);
 223                free(stk);
 224        }
 225
 226        /* Read from the parent directories and push them down. */
 227        current = stk ? stk->baselen : -1;
 228        while (current < baselen) {
 229                struct exclude_stack *stk = xcalloc(1, sizeof(*stk));
 230                const char *cp;
 231
 232                if (current < 0) {
 233                        cp = base;
 234                        current = 0;
 235                }
 236                else {
 237                        cp = strchr(base + current + 1, '/');
 238                        if (!cp)
 239                                die("oops in prep_exclude");
 240                        cp++;
 241                }
 242                stk->prev = dir->exclude_stack;
 243                stk->baselen = cp - base;
 244                stk->exclude_ix = el->nr;
 245                memcpy(dir->basebuf + current, base + current,
 246                       stk->baselen - current);
 247                strcpy(dir->basebuf + stk->baselen, dir->exclude_per_dir);
 248                add_excludes_from_file_1(dir->basebuf,
 249                                         dir->basebuf, stk->baselen,
 250                                         &stk->filebuf, el);
 251                dir->exclude_stack = stk;
 252                current = stk->baselen;
 253        }
 254        dir->basebuf[baselen] = '\0';
 255}
 256
 257/* Scan the list and let the last match determines the fate.
 258 * Return 1 for exclude, 0 for include and -1 for undecided.
 259 */
 260static int excluded_1(const char *pathname,
 261                      int pathlen, const char *basename,
 262                      struct exclude_list *el)
 263{
 264        int i;
 265
 266        if (el->nr) {
 267                for (i = el->nr - 1; 0 <= i; i--) {
 268                        struct exclude *x = el->excludes[i];
 269                        const char *exclude = x->pattern;
 270                        int to_exclude = x->to_exclude;
 271
 272                        if (x->flags & EXC_FLAG_NODIR) {
 273                                /* match basename */
 274                                if (x->flags & EXC_FLAG_NOWILDCARD) {
 275                                        if (!strcmp(exclude, basename))
 276                                                return to_exclude;
 277                                } else if (x->flags & EXC_FLAG_ENDSWITH) {
 278                                        if (x->patternlen - 1 <= pathlen &&
 279                                            !strcmp(exclude + 1, pathname + pathlen - x->patternlen + 1))
 280                                                return to_exclude;
 281                                } else {
 282                                        if (fnmatch(exclude, basename, 0) == 0)
 283                                                return to_exclude;
 284                                }
 285                        }
 286                        else {
 287                                /* match with FNM_PATHNAME:
 288                                 * exclude has base (baselen long) implicitly
 289                                 * in front of it.
 290                                 */
 291                                int baselen = x->baselen;
 292                                if (*exclude == '/')
 293                                        exclude++;
 294
 295                                if (pathlen < baselen ||
 296                                    (baselen && pathname[baselen-1] != '/') ||
 297                                    strncmp(pathname, x->base, baselen))
 298                                    continue;
 299
 300                                if (x->flags & EXC_FLAG_NOWILDCARD) {
 301                                        if (!strcmp(exclude, pathname + baselen))
 302                                                return to_exclude;
 303                                } else {
 304                                        if (fnmatch(exclude, pathname+baselen,
 305                                                    FNM_PATHNAME) == 0)
 306                                            return to_exclude;
 307                                }
 308                        }
 309                }
 310        }
 311        return -1; /* undecided */
 312}
 313
 314int excluded(struct dir_struct *dir, const char *pathname)
 315{
 316        int pathlen = strlen(pathname);
 317        int st;
 318        const char *basename = strrchr(pathname, '/');
 319        basename = (basename) ? basename+1 : pathname;
 320
 321        prep_exclude(dir, pathname, basename-pathname);
 322        for (st = EXC_CMDL; st <= EXC_FILE; st++) {
 323                switch (excluded_1(pathname, pathlen, basename, &dir->exclude_list[st])) {
 324                case 0:
 325                        return 0;
 326                case 1:
 327                        return 1;
 328                }
 329        }
 330        return 0;
 331}
 332
 333static struct dir_entry *dir_entry_new(const char *pathname, int len)
 334{
 335        struct dir_entry *ent;
 336
 337        ent = xmalloc(sizeof(*ent) + len + 1);
 338        ent->len = len;
 339        memcpy(ent->name, pathname, len);
 340        ent->name[len] = 0;
 341        return ent;
 342}
 343
 344struct dir_entry *dir_add_name(struct dir_struct *dir, const char *pathname, int len)
 345{
 346        if (cache_name_pos(pathname, len) >= 0)
 347                return NULL;
 348
 349        ALLOC_GROW(dir->entries, dir->nr+1, dir->alloc);
 350        return dir->entries[dir->nr++] = dir_entry_new(pathname, len);
 351}
 352
 353struct dir_entry *dir_add_ignored(struct dir_struct *dir, const char *pathname, int len)
 354{
 355        if (cache_name_pos(pathname, len) >= 0)
 356                return NULL;
 357
 358        ALLOC_GROW(dir->ignored, dir->ignored_nr+1, dir->ignored_alloc);
 359        return dir->ignored[dir->ignored_nr++] = dir_entry_new(pathname, len);
 360}
 361
 362enum exist_status {
 363        index_nonexistent = 0,
 364        index_directory,
 365        index_gitdir,
 366};
 367
 368/*
 369 * The index sorts alphabetically by entry name, which
 370 * means that a gitlink sorts as '\0' at the end, while
 371 * a directory (which is defined not as an entry, but as
 372 * the files it contains) will sort with the '/' at the
 373 * end.
 374 */
 375static enum exist_status directory_exists_in_index(const char *dirname, int len)
 376{
 377        int pos = cache_name_pos(dirname, len);
 378        if (pos < 0)
 379                pos = -pos-1;
 380        while (pos < active_nr) {
 381                struct cache_entry *ce = active_cache[pos++];
 382                unsigned char endchar;
 383
 384                if (strncmp(ce->name, dirname, len))
 385                        break;
 386                endchar = ce->name[len];
 387                if (endchar > '/')
 388                        break;
 389                if (endchar == '/')
 390                        return index_directory;
 391                if (!endchar && S_ISGITLINK(ntohl(ce->ce_mode)))
 392                        return index_gitdir;
 393        }
 394        return index_nonexistent;
 395}
 396
 397/*
 398 * When we find a directory when traversing the filesystem, we
 399 * have three distinct cases:
 400 *
 401 *  - ignore it
 402 *  - see it as a directory
 403 *  - recurse into it
 404 *
 405 * and which one we choose depends on a combination of existing
 406 * git index contents and the flags passed into the directory
 407 * traversal routine.
 408 *
 409 * Case 1: If we *already* have entries in the index under that
 410 * directory name, we always recurse into the directory to see
 411 * all the files.
 412 *
 413 * Case 2: If we *already* have that directory name as a gitlink,
 414 * we always continue to see it as a gitlink, regardless of whether
 415 * there is an actual git directory there or not (it might not
 416 * be checked out as a subproject!)
 417 *
 418 * Case 3: if we didn't have it in the index previously, we
 419 * have a few sub-cases:
 420 *
 421 *  (a) if "show_other_directories" is true, we show it as
 422 *      just a directory, unless "hide_empty_directories" is
 423 *      also true and the directory is empty, in which case
 424 *      we just ignore it entirely.
 425 *  (b) if it looks like a git directory, and we don't have
 426 *      'no_gitlinks' set we treat it as a gitlink, and show it
 427 *      as a directory.
 428 *  (c) otherwise, we recurse into it.
 429 */
 430enum directory_treatment {
 431        show_directory,
 432        ignore_directory,
 433        recurse_into_directory,
 434};
 435
 436static enum directory_treatment treat_directory(struct dir_struct *dir,
 437        const char *dirname, int len,
 438        const struct path_simplify *simplify)
 439{
 440        /* The "len-1" is to strip the final '/' */
 441        switch (directory_exists_in_index(dirname, len-1)) {
 442        case index_directory:
 443                return recurse_into_directory;
 444
 445        case index_gitdir:
 446                if (dir->show_other_directories)
 447                        return ignore_directory;
 448                return show_directory;
 449
 450        case index_nonexistent:
 451                if (dir->show_other_directories)
 452                        break;
 453                if (!dir->no_gitlinks) {
 454                        unsigned char sha1[20];
 455                        if (resolve_gitlink_ref(dirname, "HEAD", sha1) == 0)
 456                                return show_directory;
 457                }
 458                return recurse_into_directory;
 459        }
 460
 461        /* This is the "show_other_directories" case */
 462        if (!dir->hide_empty_directories)
 463                return show_directory;
 464        if (!read_directory_recursive(dir, dirname, dirname, len, 1, simplify))
 465                return ignore_directory;
 466        return show_directory;
 467}
 468
 469/*
 470 * This is an inexact early pruning of any recursive directory
 471 * reading - if the path cannot possibly be in the pathspec,
 472 * return true, and we'll skip it early.
 473 */
 474static int simplify_away(const char *path, int pathlen, const struct path_simplify *simplify)
 475{
 476        if (simplify) {
 477                for (;;) {
 478                        const char *match = simplify->path;
 479                        int len = simplify->len;
 480
 481                        if (!match)
 482                                break;
 483                        if (len > pathlen)
 484                                len = pathlen;
 485                        if (!memcmp(path, match, len))
 486                                return 0;
 487                        simplify++;
 488                }
 489                return 1;
 490        }
 491        return 0;
 492}
 493
 494static int in_pathspec(const char *path, int len, const struct path_simplify *simplify)
 495{
 496        if (simplify) {
 497                for (; simplify->path; simplify++) {
 498                        if (len == simplify->len
 499                            && !memcmp(path, simplify->path, len))
 500                                return 1;
 501                }
 502        }
 503        return 0;
 504}
 505
 506static int get_dtype(struct dirent *de, const char *path)
 507{
 508        int dtype = DTYPE(de);
 509        struct stat st;
 510
 511        if (dtype != DT_UNKNOWN)
 512                return dtype;
 513        if (lstat(path, &st))
 514                return dtype;
 515        if (S_ISREG(st.st_mode))
 516                return DT_REG;
 517        if (S_ISDIR(st.st_mode))
 518                return DT_DIR;
 519        if (S_ISLNK(st.st_mode))
 520                return DT_LNK;
 521        return dtype;
 522}
 523
 524/*
 525 * Read a directory tree. We currently ignore anything but
 526 * directories, regular files and symlinks. That's because git
 527 * doesn't handle them at all yet. Maybe that will change some
 528 * day.
 529 *
 530 * Also, we ignore the name ".git" (even if it is not a directory).
 531 * That likely will not change.
 532 */
 533static int read_directory_recursive(struct dir_struct *dir, const char *path, const char *base, int baselen, int check_only, const struct path_simplify *simplify)
 534{
 535        DIR *fdir = opendir(path);
 536        int contents = 0;
 537
 538        if (fdir) {
 539                struct dirent *de;
 540                char fullname[PATH_MAX + 1];
 541                memcpy(fullname, base, baselen);
 542
 543                while ((de = readdir(fdir)) != NULL) {
 544                        int len, dtype;
 545                        int exclude;
 546
 547                        if ((de->d_name[0] == '.') &&
 548                            (de->d_name[1] == 0 ||
 549                             !strcmp(de->d_name + 1, ".") ||
 550                             !strcmp(de->d_name + 1, "git")))
 551                                continue;
 552                        len = strlen(de->d_name);
 553                        /* Ignore overly long pathnames! */
 554                        if (len + baselen + 8 > sizeof(fullname))
 555                                continue;
 556                        memcpy(fullname + baselen, de->d_name, len+1);
 557                        if (simplify_away(fullname, baselen + len, simplify))
 558                                continue;
 559
 560                        exclude = excluded(dir, fullname);
 561                        if (exclude && dir->collect_ignored
 562                            && in_pathspec(fullname, baselen + len, simplify))
 563                                dir_add_ignored(dir, fullname, baselen + len);
 564
 565                        /*
 566                         * Excluded? If we don't explicitly want to show
 567                         * ignored files, ignore it
 568                         */
 569                        if (exclude && !dir->show_ignored)
 570                                continue;
 571
 572                        dtype = get_dtype(de, fullname);
 573
 574                        /*
 575                         * Do we want to see just the ignored files?
 576                         * We still need to recurse into directories,
 577                         * even if we don't ignore them, since the
 578                         * directory may contain files that we do..
 579                         */
 580                        if (!exclude && dir->show_ignored) {
 581                                if (dtype != DT_DIR)
 582                                        continue;
 583                        }
 584
 585                        switch (dtype) {
 586                        default:
 587                                continue;
 588                        case DT_DIR:
 589                                memcpy(fullname + baselen + len, "/", 2);
 590                                len++;
 591                                switch (treat_directory(dir, fullname, baselen + len, simplify)) {
 592                                case show_directory:
 593                                        if (exclude != dir->show_ignored)
 594                                                continue;
 595                                        break;
 596                                case recurse_into_directory:
 597                                        contents += read_directory_recursive(dir,
 598                                                fullname, fullname, baselen + len, 0, simplify);
 599                                        continue;
 600                                case ignore_directory:
 601                                        continue;
 602                                }
 603                                break;
 604                        case DT_REG:
 605                        case DT_LNK:
 606                                break;
 607                        }
 608                        contents++;
 609                        if (check_only)
 610                                goto exit_early;
 611                        else
 612                                dir_add_name(dir, fullname, baselen + len);
 613                }
 614exit_early:
 615                closedir(fdir);
 616        }
 617
 618        return contents;
 619}
 620
 621static int cmp_name(const void *p1, const void *p2)
 622{
 623        const struct dir_entry *e1 = *(const struct dir_entry **)p1;
 624        const struct dir_entry *e2 = *(const struct dir_entry **)p2;
 625
 626        return cache_name_compare(e1->name, e1->len,
 627                                  e2->name, e2->len);
 628}
 629
 630/*
 631 * Return the length of the "simple" part of a path match limiter.
 632 */
 633static int simple_length(const char *match)
 634{
 635        const char special[256] = {
 636                [0] = 1, ['?'] = 1,
 637                ['\\'] = 1, ['*'] = 1,
 638                ['['] = 1
 639        };
 640        int len = -1;
 641
 642        for (;;) {
 643                unsigned char c = *match++;
 644                len++;
 645                if (special[c])
 646                        return len;
 647        }
 648}
 649
 650static struct path_simplify *create_simplify(const char **pathspec)
 651{
 652        int nr, alloc = 0;
 653        struct path_simplify *simplify = NULL;
 654
 655        if (!pathspec)
 656                return NULL;
 657
 658        for (nr = 0 ; ; nr++) {
 659                const char *match;
 660                if (nr >= alloc) {
 661                        alloc = alloc_nr(alloc);
 662                        simplify = xrealloc(simplify, alloc * sizeof(*simplify));
 663                }
 664                match = *pathspec++;
 665                if (!match)
 666                        break;
 667                simplify[nr].path = match;
 668                simplify[nr].len = simple_length(match);
 669        }
 670        simplify[nr].path = NULL;
 671        simplify[nr].len = 0;
 672        return simplify;
 673}
 674
 675static void free_simplify(struct path_simplify *simplify)
 676{
 677        if (simplify)
 678                free(simplify);
 679}
 680
 681int read_directory(struct dir_struct *dir, const char *path, const char *base, int baselen, const char **pathspec)
 682{
 683        struct path_simplify *simplify = create_simplify(pathspec);
 684
 685        read_directory_recursive(dir, path, base, baselen, 0, simplify);
 686        free_simplify(simplify);
 687        qsort(dir->entries, dir->nr, sizeof(struct dir_entry *), cmp_name);
 688        qsort(dir->ignored, dir->ignored_nr, sizeof(struct dir_entry *), cmp_name);
 689        return dir->nr;
 690}
 691
 692int file_exists(const char *f)
 693{
 694        struct stat sb;
 695        return stat(f, &sb) == 0;
 696}
 697
 698/*
 699 * get_relative_cwd() gets the prefix of the current working directory
 700 * relative to 'dir'.  If we are not inside 'dir', it returns NULL.
 701 *
 702 * As a convenience, it also returns NULL if 'dir' is already NULL.  The
 703 * reason for this behaviour is that it is natural for functions returning
 704 * directory names to return NULL to say "this directory does not exist"
 705 * or "this directory is invalid".  These cases are usually handled the
 706 * same as if the cwd is not inside 'dir' at all, so get_relative_cwd()
 707 * returns NULL for both of them.
 708 *
 709 * Most notably, get_relative_cwd(buffer, size, get_git_work_tree())
 710 * unifies the handling of "outside work tree" with "no work tree at all".
 711 */
 712char *get_relative_cwd(char *buffer, int size, const char *dir)
 713{
 714        char *cwd = buffer;
 715
 716        if (!dir)
 717                return NULL;
 718        if (!getcwd(buffer, size))
 719                die("can't find the current directory: %s", strerror(errno));
 720
 721        if (!is_absolute_path(dir))
 722                dir = make_absolute_path(dir);
 723
 724        while (*dir && *dir == *cwd) {
 725                dir++;
 726                cwd++;
 727        }
 728        if (*dir)
 729                return NULL;
 730        if (*cwd == '/')
 731                return cwd + 1;
 732        return cwd;
 733}
 734
 735int is_inside_dir(const char *dir)
 736{
 737        char buffer[PATH_MAX];
 738        return get_relative_cwd(buffer, sizeof(buffer), dir) != NULL;
 739}
 740
 741int remove_dir_recursively(struct strbuf *path, int only_empty)
 742{
 743        DIR *dir = opendir(path->buf);
 744        struct dirent *e;
 745        int ret = 0, original_len = path->len, len;
 746
 747        if (!dir)
 748                return -1;
 749        if (path->buf[original_len - 1] != '/')
 750                strbuf_addch(path, '/');
 751
 752        len = path->len;
 753        while ((e = readdir(dir)) != NULL) {
 754                struct stat st;
 755                if ((e->d_name[0] == '.') &&
 756                    ((e->d_name[1] == 0) ||
 757                     ((e->d_name[1] == '.') && e->d_name[2] == 0)))
 758                        continue; /* "." and ".." */
 759
 760                strbuf_setlen(path, len);
 761                strbuf_addstr(path, e->d_name);
 762                if (lstat(path->buf, &st))
 763                        ; /* fall thru */
 764                else if (S_ISDIR(st.st_mode)) {
 765                        if (!remove_dir_recursively(path, only_empty))
 766                                continue; /* happy */
 767                } else if (!only_empty && !unlink(path->buf))
 768                        continue; /* happy, too */
 769
 770                /* path too long, stat fails, or non-directory still exists */
 771                ret = -1;
 772                break;
 773        }
 774        closedir(dir);
 775
 776        strbuf_setlen(path, original_len);
 777        if (!ret)
 778                ret = rmdir(path->buf);
 779        return ret;
 780}
 781
 782void setup_standard_excludes(struct dir_struct *dir)
 783{
 784        const char *path;
 785
 786        dir->exclude_per_dir = ".gitignore";
 787        path = git_path("info/exclude");
 788        if (!access(path, R_OK))
 789                add_excludes_from_file(dir, path);
 790        if (excludes_file && !access(excludes_file, R_OK))
 791                add_excludes_from_file(dir, excludes_file);
 792}