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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 <inline-syscall.h>
#include <errno.h>
#include <fcntl.h>
#include <stdarg.h>
#include <sys/ioctl.h>
DECLARE_INLINE_SYSCALL (int, fcntl, int fd, int cmd, ...);
int
__fcntl_not_cancel (int fd, int cmd, ...)
{
int res;
va_list ap;
void *arg;
va_start (ap, cmd);
arg = va_arg (ap, void *);
va_end (ap);
/* we need to handle some cmd's here since the kernel doesn't */
switch(cmd)
{
case F_GETOWN:
if(ioctl (fd, FIOGETOWN, &res) == -1)
return -1;
return res;
case F_SETOWN:
return ioctl (fd, FIOSETOWN, &arg);
default:
return INLINE_SYSCALL (fcntl, 3, fd, cmd, arg);
}
}
int
__libc_fcntl (int fd, int cmd, ...)
{
va_list ap;
void *arg;
va_start (ap, cmd);
arg = va_arg (ap, void *);
va_end (ap);
if (SINGLE_THREAD_P || cmd != F_SETLKW)
return __fcntl_not_cancel (fd, cmd, arg);
int oldtype = LIBC_CANCEL_ASYNC ();
int res = __fcntl_not_cancel (fd, cmd, arg);
LIBC_CANCEL_RESET (oldtype);
return res;
}
libc_hidden_def (__libc_fcntl)
weak_alias (__libc_fcntl, __fcntl)
libc_hidden_weak (__fcntl)
weak_alias (__libc_fcntl, fcntl)
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