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0830d93eec
Check only bool variable inside uwrap structure instead of calling whole uid_init(). In the best case only one mutex lock is need when check. NOTES: * This patch uses __atomic_load gcc builtin function. * uid_init() were moved outside uid_wrapper_enabled() function. Signed-off-by: Robin Hack <hack.robin@gmail.com> Reviewed-by: Andreas Schneider <asn@samba.org> Reviewed-by: Stefan Metzmacher <metze@samba.org>
109 lines
3.3 KiB
Python
109 lines
3.3 KiB
Python
#!/usr/bin/env python
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import os
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VERSION="1.0.1"
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def configure(conf):
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if conf.CHECK_BUNDLED_SYSTEM('uid_wrapper', minversion=VERSION, set_target=False):
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conf.DEFINE('USING_SYSTEM_UID_WRAPPER', 1)
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libuid_wrapper_so_path = 'libuid_wrapper.so'
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else:
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# check HAVE_GCC_ATOMIC_BUILTINS
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conf.CHECK_CODE('''
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#include <stdbool.h>
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int main(void) {
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bool x;
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bool *p_x = &x;
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__atomic_load(p_x, &x, __ATOMIC_RELAXED);
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return 0;
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''',
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'HAVE_GCC_ATOMIC_BUILTINS',
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addmain=False,
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msg='Checking for atomic builtins')
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# check HAVE_GCC_THREAD_LOCAL_STORAGE
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conf.CHECK_CODE('''
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__thread int tls;
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int main(void) {
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return 0;
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}
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''',
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'HAVE_GCC_THREAD_LOCAL_STORAGE',
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addmain=False,
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msg='Checking for thread local storage')
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# check HAVE_CONSTRUCTOR_ATTRIBUTE
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conf.CHECK_CODE('''
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void test_constructor_attribute(void) __attribute__ ((constructor));
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void test_constructor_attribute(void)
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{
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return;
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}
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int main(void) {
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return 0;
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}
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''',
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'HAVE_CONSTRUCTOR_ATTRIBUTE',
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addmain=False,
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msg='Checking for library constructor support')
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# check HAVE_DESTRUCTOR_ATTRIBUTE
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conf.CHECK_CODE('''
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void test_destructor_attribute(void) __attribute__ ((destructor));
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void test_destructor_attribute(void)
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{
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return;
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}
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int main(void) {
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return 0;
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}
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''',
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'HAVE_DESTRUCTOR_ATTRIBUTE',
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addmain=False,
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msg='Checking for library destructor support')
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# check HAVE_FUNCTION_ATTRIBUTE_FORMAT
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conf.CHECK_CODE('''
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void log_fn(const char *format, ...) __attribute__ ((format (printf, 1, 2)));
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int main(void) {
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return 0;
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}
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''',
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'HAVE_FUNCTION_ATTRIBUTE_FORMAT',
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addmain=False,
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msg='Checking for printf format validation support')
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# Prototype checks
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conf.CHECK_C_PROTOTYPE('setgroups',
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'int setgroups(int ngroups, const gid_t *grouplist)',
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define='HAVE_SETGROUPS_INT', headers='unistd.h sys/types.h')
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conf.CHECK_C_PROTOTYPE('syscall',
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'int syscall(int number, ...)',
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define='HAVE_SYSCALL_INT', headers='unistd.h sys/syscall.h')
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# Create full path to uid_wrapper
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srcdir = os.path.realpath(conf.srcdir)
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libuid_wrapper_so_path = srcdir + '/bin/default/lib/uid_wrapper/libuid-wrapper.so'
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conf.DEFINE('LIBUID_WRAPPER_SO_PATH', libuid_wrapper_so_path)
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conf.DEFINE('UID_WRAPPER', 1)
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def build(bld):
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if not bld.CONFIG_SET("USING_SYSTEM_UID_WRAPPER"):
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# We need to do it this way or the library wont work.
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# Using private_library=True will add symbol version which
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# breaks preloading!
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bld.SAMBA_LIBRARY('uid_wrapper',
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source='uid_wrapper.c',
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cflags='-DNDEBUG',
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deps='dl',
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install=False,
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realname='libuid-wrapper.so')
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