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/* Copyright (C) 2008 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by David Bartley <dtbartle@csclub.uwaterloo.ca>, 2008.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 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
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, write to the Free
Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
02111-1307 USA. */
#include <sysdep-cancel.h>
#include <not-cancel.h>
#include <inline-syscall.h>
#include <stdarg.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <sys/ioctl.h>
#include <errno.h>
#ifndef OPEN_FUNC_PRE_FILE_PARAM_DECLS
# define OPEN_FUNC_PRE_FILE_PARAM_DECLS
#endif
#ifndef OPEN_FUNC_PRE_FILE_ARGS
# define OPEN_FUNC_PRE_FILE_ARGS
#endif
/* rtld doesn't use O_DIRECT or O_DIRECTORY so just use the syscall */
int
OPEN_NOT_CANCEL_FUNC_NAME (OPEN_FUNC_PRE_FILE_PARAM_DECLS
const char *file, int oflag, mode_t mode)
{
/* ensure we don't pass O_DIRECT and O_DIRECTORY down */
int saved_oflag = oflag;
oflag = oflag & ~(O_DIRECT | O_DIRECTORY);
if (saved_oflag & O_DIRECT)
oflag |= O_SYNC | O_RSYNC;
int fd = OPEN_FUNC_SYSCALL;
if (fd == -1)
return -1;
/* verify that opened file was a directory */
if (saved_oflag & O_DIRECTORY)
{
OPEN_FUNC_STAT_BUF buf;
int res = OPEN_FUNC_STAT;
if (res == -1)
{
close_not_cancel_no_status (fd);
return -1;
}
if (!S_ISDIR (buf.st_mode))
{
close_not_cancel_no_status (fd);
__set_errno (ENOTDIR);
return -1;
}
}
/* enable direct i/o via _FIODIRECTIO */
if (saved_oflag & O_DIRECT)
{
int res = ioctl (fd, _FIODIRECTIO, DIRECTIO_ON);
if (res == -1)
{
close_not_cancel_no_status(fd);
return -1;
}
}
return fd;
}
int
OPEN_FUNC_NAME (OPEN_FUNC_PRE_FILE_PARAM_DECLS
const char *file, int oflag, ...)
{
int mode = 0;
if (oflag & O_CREAT)
{
va_list arg;
va_start (arg, oflag);
mode = va_arg (arg, int);
va_end (arg);
}
if (SINGLE_THREAD_P)
return OPEN_NOT_CANCEL_FUNC_NAME (OPEN_FUNC_PRE_FILE_ARGS
file, oflag, mode);
int oldtype = LIBC_CANCEL_ASYNC ();
int res = OPEN_NOT_CANCEL_FUNC_NAME (OPEN_FUNC_PRE_FILE_ARGS
file, oflag, mode);
LIBC_CANCEL_RESET (oldtype);
return res;
}
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