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