49 lines
1.3 KiB
C
49 lines
1.3 KiB
C
|
/* Copyright (C) 1991-2022 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 <errno.h>
|
||
|
|
#include <unistd.h>
|
||
|
|
#include <stddef.h>
|
||
|
|
|
||
|
|
/* Read NBYTES into BUF from FD. Return the number read or -1. */
|
||
|
|
ssize_t
|
||
|
|
__libc_read (int fd, void *buf, size_t nbytes)
|
||
|
|
{
|
||
|
|
if (nbytes == 0)
|
||
|
|
return 0;
|
||
|
|
if (fd < 0)
|
||
|
|
{
|
||
|
|
__set_errno (EBADF);
|
||
|
|
return -1;
|
||
|
|
}
|
||
|
|
if (buf == NULL)
|
||
|
|
{
|
||
|
|
__set_errno (EINVAL);
|
||
|
|
return -1;
|
||
|
|
}
|
||
|
|
|
||
|
|
__set_errno (ENOSYS);
|
||
|
|
return -1;
|
||
|
|
}
|
||
|
|
libc_hidden_def (__libc_read)
|
||
|
|
stub_warning (read)
|
||
|
|
|
||
|
|
weak_alias (__libc_read, __read)
|
||
|
|
libc_hidden_weak (__read)
|
||
|
|
weak_alias (__libc_read, read)
|
||
|
|
libc_hidden_weak (read)
|