diff options
Diffstat (limited to 'dirent/scandir64.c')
-rw-r--r-- | dirent/scandir64.c | 93 |
1 files changed, 93 insertions, 0 deletions
diff --git a/dirent/scandir64.c b/dirent/scandir64.c new file mode 100644 index 0000000000..a0b7406aac --- /dev/null +++ b/dirent/scandir64.c @@ -0,0 +1,93 @@ +/* Copyright (C) 1992, 93, 94, 95, 96, 97, 98 Free Software Foundation, Inc. + This file is part of the GNU C Library. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Library General Public License as + published by the Free Software Foundation; either version 2 of the + License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Library General Public License for more details. + + You should have received a copy of the GNU Library General Public + License along with the GNU C Library; see the file COPYING.LIB. If not, + write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, + Boston, MA 02111-1307, USA. */ + +#include <dirent.h> +#include <stdlib.h> +#include <string.h> +#include <errno.h> + +int +scandir64 (dir, namelist, select, cmp) + const char *dir; + struct dirent64 ***namelist; + int (*select) __P ((const struct dirent64 *)); + int (*cmp) __P ((const void *, const void *)); +{ + DIR *dp = opendir (dir); + struct dirent64 **v = NULL; + size_t vsize = 0, i; + struct dirent64 *d; + int save; + + if (dp == NULL) + return -1; + + save = errno; + __set_errno (0); + + i = 0; + while ((d = __readdir64 (dp)) != NULL) + if (select == NULL || (*select) (d)) + { + struct dirent64 *vnew; + size_t dsize; + + /* Ignore errors from select or readdir */ + __set_errno (0); + + if (i == vsize) + { + struct dirent64 **new; + if (vsize == 0) + vsize = 10; + else + vsize *= 2; + new = (struct dirent64 **) realloc (v, vsize * sizeof (*v)); + if (new == NULL) + break; + v = new; + } + + dsize = &d->d_name[_D_ALLOC_NAMLEN (d)] - (char *) d; + vnew = (struct dirent64 *) malloc (dsize); + if (vnew == NULL) + break; + + v[i++] = (struct dirent64 *) memcpy (vnew, d, dsize); + } + + if (errno != 0) + { + save = errno; + (void) closedir (dp); + while (i > 0) + free (v[--i]); + free (v); + __set_errno (save); + return -1; + } + + (void) closedir (dp); + __set_errno (save); + + /* Sort the list if we have a comparison function to sort with. */ + if (cmp != NULL) + qsort (v, i, sizeof (*v), cmp); + *namelist = v; + return i; +} |