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140 lines
3.5 KiB
C
140 lines
3.5 KiB
C
/* Copyright (C) 2000-2020 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 Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the 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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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, see
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<https://www.gnu.org/licenses/>. */
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#define scandir __no_scandir_decl
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#include <dirent.h>
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#undef scandir
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int
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__scandir64 (const char *dir, struct dirent64 ***namelist,
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int (*select) (const struct dirent64 *),
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int (*cmp) (const struct dirent64 **, const struct dirent64 **))
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{
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return __scandir64_tail (__opendir (dir), namelist, select, cmp);
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}
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#if _DIRENT_MATCHES_DIRENT64
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weak_alias (__scandir64, scandir64)
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weak_alias (__scandir64, scandir)
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#else
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# include <shlib-compat.h>
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versioned_symbol (libc, __scandir64, scandir64, GLIBC_2_2);
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# if SHLIB_COMPAT (libc, GLIBC_2_1, GLIBC_2_2)
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# include <string.h>
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# include <errno.h>
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# include "olddirent.h"
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int
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__old_scandir64 (const char *dir, struct __old_dirent64 ***namelist,
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int (*select) (const struct __old_dirent64 *),
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int (*cmp) (const struct __old_dirent64 **,
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const struct __old_dirent64 **))
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{
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DIR *dp = __opendir (dir);
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struct __old_dirent64 **v = NULL;
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size_t vsize = 0;
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struct scandir_cancel_struct c;
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struct __old_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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c.dp = dp;
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c.v = NULL;
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c.cnt = 0;
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__libc_cleanup_push (__scandir_cancel_handler, &c);
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while ((d = __old_readdir64 (dp)) != NULL)
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{
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int use_it = select == NULL;
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if (! use_it)
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{
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use_it = select (d);
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/* The select function might have changed errno. It was
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zero before and it need to be again to make the latter
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tests work. */
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__set_errno (0);
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}
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if (use_it)
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{
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struct __old_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 (__glibc_unlikely (c.cnt == vsize))
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{
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struct __old_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 __old_dirent64 **) realloc (v,
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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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c.v = (void *) v;
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}
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dsize = &d->d_name[_D_ALLOC_NAMLEN (d)] - (char *) d;
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vnew = (struct __old_dirent64 *) malloc (dsize);
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if (vnew == NULL)
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break;
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v[c.cnt++] = (struct __old_dirent64 *) memcpy (vnew, d, dsize);
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}
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}
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if (__builtin_expect (errno, 0) != 0)
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{
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save = errno;
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while (c.cnt > 0)
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free (v[--c.cnt]);
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free (v);
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c.cnt = -1;
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}
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else
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{
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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, c.cnt, sizeof (*v),
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(int (*) (const void *, const void *)) cmp);
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*namelist = v;
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}
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__libc_cleanup_pop (0);
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(void) __closedir (dp);
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__set_errno (save);
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return c.cnt;
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}
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compat_symbol (libc, __old_scandir64, scandir64, GLIBC_2_1);
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# endif /* SHLIB_COMPAT (libc, GLIBC_2_1, GLIBC_2_2) */
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#endif /* _DIRENT_MATCHES_DIRENT64 */
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