glibc/sysdeps/unix/opendir.c
Ulrich Drepper 01c901a56b update from main archive 961220
Sun Dec 22 00:01:27 1996  Ulrich Drepper  <drepper@cygnus.com>

	* inet/getnetgrent.c: Reformat copyright.

	* inet/getnetgrent_r.c (__internal_endnetgrent): Correct comment.
	(__internal_getnetgrent): Rename to __internal_getnetgrent_r as
	required in change nis/nss_compat/* at Thu Dec 19 14:24:50 1996.
	Reported by Thorsten Kukuk <kukuk@weber.uni-paderborn.de>.

	* nss/nss_files/files-netgrp.c: Fix typo.
	* login/utmp_db.c: Comment out unused variables.
	* misc/tst-dirname.c: Provide prototype for main (for now).
	* new-malloc/mcheck-init.c: Include <mcheck.h>.
	* new-malloc/obstack.c: Provide real prototypes.

	* resolv/base64.c (b64_ntop): Use size_t as type of `i', not int.
	(b64_pton): Likewise for `tarindex'.
	* resolv/nsap_addr.c (inet_nsap_addr): Add cast to prevent warning.

	* stdio-common/Makefile: Add CFLAGS-vfprintf.c to prevent warning.
	* stdio-common/printf-parse.h: Remove definition of MIN and MAX.
	* stdio-common/printf-prs.c: Include <sys/param.h> to get MIN and MAX.
	* stdio-common/vfprintf.c: Likewise.
	* stdlib/gmp-impl.h: Only define MIN and MAX if not already done.
	* stdlib/tst-strtol.c: Don't use -2147483648 as unsigned long value.

	* sysdeps/generic/Makefile ($(subdir)=string): Define
	CFLAGS-wordcopy.c to prevent warning.
	* sysdeps/generic/mul_n.c (mpn_mul_n): Don't define as inline.
	* sysdeps/generic/wordcopy.c: De-ANSI-declfy.
	* sysdeps/i386/Makefile ($(subdir)=elf): Define CFLAGS-rtld.c
	to prevent warning.
	* sysdeps/i386/dl-machine.h: Correct copyright.
	* sysdeps/unix/closedir.c: Likewise.
	* sysdeps/unix/dirstream.h: Likewise.
	* sysdeps/unix/opendir.c: Likewise.
	* time/tzset.c: Add prototype for __tzset_internal.

	* sysdeps/gnu/utmpbits.h (enum utlogin): Comment out since the
	way it is supposed to work is not yet known.
	(struct utmp): Remove ut_login and ut_syslen field for now.

Sat Dec 21 16:23:54 1996  Ulrich Drepper  <drepper@cygnus.com>

	* time/strftime.c: Fix another bug in handling flags made it
	impossible to use the `-', `_', or `0' flag.
1996-12-22 00:32:43 +00:00

99 lines
2.4 KiB
C

/* Copyright (C) 1991, 92, 93, 94, 95, 96 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 <errno.h>
#include <limits.h>
#include <stddef.h>
#include <stdlib.h>
#include <dirent.h>
#include <fcntl.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <unistd.h>
#include <stdio.h>
#include <dirstream.h>
/* Open a directory stream on NAME. */
DIR *
__opendir (const char *name)
{
DIR *dirp;
struct stat statbuf;
int fd;
if (name[0] == '\0')
{
/* POSIX.1-1990 says an empty name gets ENOENT;
but `open' might like it fine. */
__set_errno (ENOENT);
return NULL;
}
fd = __open (name, O_RDONLY);
if (fd < 0)
return NULL;
if (__fcntl (fd, F_SETFD, FD_CLOEXEC) < 0)
goto lose;
if (fstat (fd, &statbuf) < 0)
goto lose;
if (! S_ISDIR (statbuf.st_mode))
{
__set_errno (ENOTDIR);
goto lose;
}
dirp = (DIR *) calloc (1, sizeof (DIR)); /* Zero-fill. */
if (dirp == NULL)
lose:
{
int save = errno;
(void) __close (fd);
__set_errno (save);
return NULL;
}
#ifdef _STATBUF_ST_BLKSIZE
if (statbuf.st_blksize < sizeof (struct dirent))
dirp->allocation = sizeof (struct dirent);
else
dirp->allocation = statbuf.st_blksize;
#else
dirp->allocation = (BUFSIZ < sizeof (struct dirent) ?
sizeof (struct dirent) : BUFSIZ);
#endif
dirp->data = (char *) malloc (dirp->allocation);
if (dirp->data == NULL)
{
int save = errno;
free (dirp);
(void) __close (fd);
__set_errno (save);
return NULL;
}
dirp->fd = fd;
__libc_lock_init (dirp->lock);
return dirp;
}
weak_alias (__opendir, opendir)