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/* Linux fcntl syscall implementation -- non-cancellable.
Copyright (C) 2018-2020 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 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, see
<https://www.gnu.org/licenses/>. */
#include <fcntl.h>
#include <stdarg.h>
#include <errno.h>
#include <sysdep-cancel.h>
#include <not-cancel.h>
#ifndef __NR_fcntl64
# define __NR_fcntl64 __NR_fcntl
#endif
#ifndef FCNTL_ADJUST_CMD
# define FCNTL_ADJUST_CMD(__cmd) __cmd
#endif
int
__fcntl64_nocancel (int fd, int cmd, ...)
{
va_list ap;
void *arg;
va_start (ap, cmd);
arg = va_arg (ap, void *);
va_end (ap);
cmd = FCNTL_ADJUST_CMD (cmd);
return __fcntl64_nocancel_adjusted (fd, cmd, arg);
}
hidden_def (__fcntl64_nocancel)
int
__fcntl64_nocancel_adjusted (int fd, int cmd, void *arg)
{
if (cmd == F_GETOWN)
{
struct f_owner_ex fex;
int res = INTERNAL_SYSCALL_CALL (fcntl64, fd, F_GETOWN_EX, &fex);
if (!INTERNAL_SYSCALL_ERROR_P (res))
return fex.type == F_OWNER_GID ? -fex.pid : fex.pid;
return INLINE_SYSCALL_ERROR_RETURN_VALUE
(INTERNAL_SYSCALL_ERRNO (res));
}
return INLINE_SYSCALL_CALL (fcntl64, fd, cmd, (void *) arg);
}
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