mirror of
https://sourceware.org/git/glibc.git
synced 2024-11-30 08:40:07 +00:00
a711dd4ba8
2000-04-21 Ulrich Drepper <drepper@redhat.com> * iconv/iconv.c (iconv): Add __builtin_expect where useful. * iconv/iconv_close.c (iconv_close): Likewise. * iconv/iconv_open.c (iconv_open): Likewise. * grp/putgrent.c (putgrent): Unlock steam if fprintf failed. Add __builtin_expect where useful. * grp/initgroups.c (initgroups): Test for result of memory allocation and punt if it fails. * dirent/scandir.c (scandir): Add __builtin_expect where useful. * grp/fgetgrent.c (fgetfrent): Likewise. * grp/fgetgrent_r.c (__fgetgrent_r): Likewise.
94 lines
2.3 KiB
C
94 lines
2.3 KiB
C
/* Copyright (C) 1992-1998, 2000 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
|
|
scandir (dir, namelist, select, cmp)
|
|
const char *dir;
|
|
struct dirent ***namelist;
|
|
int (*select) (const struct dirent *);
|
|
int (*cmp) (const void *, const void *);
|
|
{
|
|
DIR *dp = __opendir (dir);
|
|
struct dirent **v = NULL;
|
|
size_t vsize = 0, i;
|
|
struct dirent *d;
|
|
int save;
|
|
|
|
if (dp == NULL)
|
|
return -1;
|
|
|
|
save = errno;
|
|
__set_errno (0);
|
|
|
|
i = 0;
|
|
while ((d = __readdir (dp)) != NULL)
|
|
if (select == NULL || (*select) (d))
|
|
{
|
|
struct dirent *vnew;
|
|
size_t dsize;
|
|
|
|
/* Ignore errors from select or readdir */
|
|
__set_errno (0);
|
|
|
|
if (__builtin_expect (i == vsize, 0))
|
|
{
|
|
struct dirent **new;
|
|
if (vsize == 0)
|
|
vsize = 10;
|
|
else
|
|
vsize *= 2;
|
|
new = (struct dirent **) realloc (v, vsize * sizeof (*v));
|
|
if (new == NULL)
|
|
break;
|
|
v = new;
|
|
}
|
|
|
|
dsize = &d->d_name[_D_ALLOC_NAMLEN (d)] - (char *) d;
|
|
vnew = (struct dirent *) malloc (dsize);
|
|
if (vnew == NULL)
|
|
break;
|
|
|
|
v[i++] = (struct dirent *) memcpy (vnew, d, dsize);
|
|
}
|
|
|
|
if (__builtin_expect (errno, 0) != 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;
|
|
}
|