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#!/usr/bin/env python
import Options
import os, sys
VERSION="1.2.4"
def configure(conf):
if conf.CHECK_BUNDLED_SYSTEM('uid_wrapper', minversion=VERSION, set_target=False):
conf.DEFINE('USING_SYSTEM_UID_WRAPPER', 1)
libuid_wrapper_so_path = 'libuid_wrapper.so'
else:
# check HAVE_GCC_ATOMIC_BUILTINS
conf.CHECK_CODE('''
#include <stdbool.h>
int main(void) {
bool x;
bool *p_x = &x;
__atomic_load(p_x, &x, __ATOMIC_RELAXED);
return 0;
''',
'HAVE_GCC_ATOMIC_BUILTINS',
addmain=False,
msg='Checking for atomic builtins')
# check HAVE_GCC_THREAD_LOCAL_STORAGE
conf.CHECK_CODE('''
__thread int tls;
int main(void) {
return 0;
}
''',
'HAVE_GCC_THREAD_LOCAL_STORAGE',
addmain=False,
msg='Checking for thread local storage')
if Options.options.address_sanitizer:
# check HAVE_ADDRESS_SANITIZER_ATTRIBUTE
conf.CHECK_CODE('''
void test_address_sanitizer_attribute(void) __attribute__((no_sanitize_address));
void test_address_sanitizer_attribute(void)
{
return;
}
int main(void) {
return 0;
}
''',
'HAVE_ADDRESS_SANITIZER_ATTRIBUTE',
addmain=False,
cflags='-Wall -Wextra -Werror',
msg='Checking for address sanitizer attribute')
# check HAVE_FUNCTION_ATTRIBUTE_FORMAT
conf.CHECK_CODE('''
void log_fn(const char *format, ...) __attribute__ ((format (printf, 1, 2)));
int main(void) {
return 0;
}
''',
'HAVE_FUNCTION_ATTRIBUTE_FORMAT',
addmain=False,
msg='Checking for printf format validation support')
# Prototype checks
conf.CHECK_C_PROTOTYPE('setgroups',
'int setgroups(int ngroups, const gid_t *grouplist)',
define='HAVE_SETGROUPS_INT', headers='unistd.h sys/types.h')
conf.CHECK_C_PROTOTYPE('syscall',
'int syscall(int number, ...)',
define='HAVE_SYSCALL_INT', headers='unistd.h sys/syscall.h')
if (sys.platform.rfind('linux') > -1):
conf.CHECK_CODE('''
#if defined(HAVE_UNISTD_H)
#include <unistd.h>
#endif
#include <stdlib.h>
#include <stdio.h>
#include <sys/types.h>
#include <errno.h>
#ifdef HAVE_SYS_PRIV_H
#include <sys/priv.h>
#endif
#ifdef HAVE_SYS_ID_H
#include <sys/id.h>
#endif
#if defined(HAVE_SYSCALL_H)
#include <syscall.h>
#endif
#if defined(HAVE_SYS_SYSCALL_H)
#include <sys/syscall.h>
#endif
syscall(SYS_setresuid32, -1, -1, -1);
syscall(SYS_setresgid32, -1, -1, -1);
syscall(SYS_setreuid32, -1, -1);
syscall(SYS_setregid32, -1, -1);
syscall(SYS_setuid32, -1);
syscall(SYS_setgid32, -1);
syscall(SYS_setgroups32, 0, NULL);
''',
'HAVE_LINUX_32BIT_SYSCALLS',
msg="Checking whether Linux has 32-bit credential calls");
conf.CHECK_FUNCS('getresuid getresgid')
# Create full path to uid_wrapper
blddir = os.path.realpath(conf.blddir)
libuid_wrapper_so_path = blddir + '/default/lib/uid_wrapper/libuid-wrapper.so'
conf.DEFINE('LIBUID_WRAPPER_SO_PATH', libuid_wrapper_so_path)
conf.DEFINE('UID_WRAPPER', 1)
def build(bld):
if not bld.CONFIG_SET("USING_SYSTEM_UID_WRAPPER"):
# We need to do it this way or the library wont work.
# Using private_library=True will add symbol version which
# breaks preloading!
bld.SAMBA_LIBRARY('uid_wrapper',
source='uid_wrapper.c',
deps='dl',
install=False,
realname='libuid-wrapper.so')
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