Current File : //usr/share/doc/gdb/contrib/expect-read1.c
/* Copyright (C) 2013-2024 Free Software Foundation, Inc.
This file is part of GDB.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
This program 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 General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>. */
/* RTLD_NEXT requires _GNU_SOURCE. */
#define _GNU_SOURCE 1
#include <dlfcn.h>
#include <unistd.h>
#include <fcntl.h>
#include <stdlib.h>
ssize_t
read (int fd, void *buf, size_t count)
{
static ssize_t (*read2) (int fd, void *buf, size_t count) = NULL;
if (read2 == NULL)
{
unsetenv ("LD_PRELOAD");
read2 = dlsym (RTLD_NEXT, "read");
}
if (count > 1 && isatty (fd) == 1)
count = 1;
return read2 (fd, buf, count);
}
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