glibc/debug/fdelt_chk.c
Frédéric Bérat d9a99272d2 misc/bits/select2.h: Clearly separate declaration from definitions
The __fdelt_chk declaration needs to be available so that
libc_hidden_proto can be used while not redefining __FD_ELT.
Thus, misc/bits/select-decl.h is created to hold the corresponding
prototypes.

Reviewed-by: Siddhesh Poyarekar <siddhesh@sourceware.org>
2023-07-05 16:59:48 +02:00

32 lines
1.0 KiB
C

/* Copyright (C) 2011-2023 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 <stdio.h>
#include <sys/select.h>
long int
__fdelt_chk (long int d)
{
if (d < 0 || d >= FD_SETSIZE)
__fortify_fail ("bit out of range 0 - FD_SETSIZE on fd_set");
return d / __NFDBITS;
}
strong_alias (__fdelt_chk, __fdelt_warn)
libc_hidden_def (__fdelt_chk)