99e46354d9
1998-10-13 Ulrich Drepper <drepper@cygnus.com> * sysdeps/unix/sysv/linux/sparc/sparc32/sigaction.c: Include string.h to get memcpy prototype and NULL definition. 1998-10-12 Andreas Schwab <schwab@issan.cs.uni-dortmund.de> * misc/sys/cdefs.h (__THROW): New macro. * argp/argp.h: Use it to replace the kludgey __P in inline function definitions. * sysdeps/unix/sysv/linux/bits/socket.h: Likewise. * stdlib/stdlib.h: Likewise. * wcsmbs/wchar.h: Likewise. * libio/stdio.h: Likewise. * stdio/stdio.h: Likewise. * sysdeps/wordsize-64/inttypes.h: Likewise. * sysdeps/wordsize-32/inttypes.h: Likewise. * string/argz.h: Likewise. * io/sys/stat.h: Likewise. 1998-10-12 Andreas Schwab <schwab@issan.cs.uni-dortmund.de> * Rules (stdio_lim): New variable. ($(stdio_lim:h=st)): Use this as intermediate stamp file, depend on Rules and config.make, use $(move-if-change) to avoid unnessary recompilations, and cleanup command. (common-generated): Add bits/stdio_lim.st.
97 lines
2.6 KiB
C
97 lines
2.6 KiB
C
/* Copyright (C) 1991, 92, 93, 94, 95, 96, 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 <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;
|
|
size_t allocation;
|
|
int save_errno;
|
|
|
|
if (name[0] == '\0')
|
|
{
|
|
/* POSIX.1-1990 says an empty name gets ENOENT;
|
|
but `open' might like it fine. */
|
|
__set_errno (ENOENT);
|
|
return NULL;
|
|
}
|
|
|
|
/* We first have to check whether the name is for a directory. We
|
|
cannot do this after the open() call since the open/close operation
|
|
performed on, say, a tape device might have undesirable effects. */
|
|
if (stat (name, &statbuf) < 0)
|
|
return NULL;
|
|
if (! S_ISDIR (statbuf.st_mode))
|
|
{
|
|
__set_errno (ENOTDIR);
|
|
return NULL;
|
|
}
|
|
|
|
fd = __open (name, O_RDONLY|O_NDELAY);
|
|
if (fd < 0)
|
|
return NULL;
|
|
|
|
if (__fcntl (fd, F_SETFD, FD_CLOEXEC) < 0)
|
|
goto lose;
|
|
|
|
#ifdef _STATBUF_ST_BLKSIZE
|
|
if (statbuf.st_blksize < sizeof (struct dirent))
|
|
allocation = sizeof (struct dirent);
|
|
else
|
|
allocation = statbuf.st_blksize;
|
|
#else
|
|
allocation = (BUFSIZ < sizeof (struct dirent)
|
|
? sizeof (struct dirent) : BUFSIZ);
|
|
#endif
|
|
|
|
dirp = (DIR *) calloc (1, sizeof (DIR) + allocation); /* Zero-fill. */
|
|
if (dirp == NULL)
|
|
lose:
|
|
{
|
|
save_errno = errno;
|
|
lose2:
|
|
(void) __close (fd);
|
|
__set_errno (save_errno);
|
|
return NULL;
|
|
}
|
|
dirp->data = (char *) (dirp + 1);
|
|
dirp->allocation = allocation;
|
|
dirp->fd = fd;
|
|
|
|
__libc_lock_init (dirp->lock);
|
|
|
|
return dirp;
|
|
}
|
|
weak_alias (__opendir, opendir)
|