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/*
* Copyright (C) 2014-2021 Firejail Authors
*
* This file is part of firejail project
*
* 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 2 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, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#include "../include/ldd_utils.h"
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
// todo: resolve overlap with masked_lib_dirs[] array from fs_lib.c
const char * const default_lib_paths[] = {
"/usr/lib/x86_64-linux-gnu", // Debian & friends
"/lib/x86_64-linux-gnu", // CentOS, Fedora
"/usr/lib64",
"/lib64",
"/usr/lib",
"/lib",
LIBDIR,
"/usr/local/lib64",
"/usr/local/lib",
"/usr/lib/x86_64-linux-gnu/mesa", // libGL.so is sometimes a symlink into this directory
"/usr/lib/x86_64-linux-gnu/mesa-egl", // libGL.so is sometimes a symlink into this directory
// "/usr/lib/x86_64-linux-gnu/plasma-discover",
NULL
};
// return 1 if this is a 64 bit program/library
int is_lib_64(const char *exe) {
int retval = 0;
int fd = open(exe, O_RDONLY);
if (fd < 0)
return 0;
unsigned char buf[EI_NIDENT];
ssize_t len = 0;
while (len < EI_NIDENT) {
ssize_t sz = read(fd, buf + len, EI_NIDENT - len);
if (sz <= 0)
goto doexit;
len += sz;
}
if (buf[EI_CLASS] == ELFCLASS64)
retval = 1;
doexit:
close(fd);
return retval;
}
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