lib/uid_wrapper/wscript

   1 #!/usr/bin/env python
   2
   3 import Options
   4 import os
   5
   6 VERSION="1.1.0"
   7
   8 def configure(conf):
   9     if conf.CHECK_BUNDLED_SYSTEM('uid_wrapper', minversion=VERSION, set_target=False):
  10         conf.DEFINE('USING_SYSTEM_UID_WRAPPER', 1)
  11         libuid_wrapper_so_path = 'libuid_wrapper.so'
  12     else:
  13         # check HAVE_GCC_ATOMIC_BUILTINS
  14         conf.CHECK_CODE('''
  15             #include <stdbool.h>
  16             int main(void) {
  17                 bool x;
  18                 bool *p_x = &x;
  19                 __atomic_load(p_x, &x, __ATOMIC_RELAXED);
  20                 return 0;
  21             ''',
  22             'HAVE_GCC_ATOMIC_BUILTINS',
  23             addmain=False,
  24             msg='Checking for atomic builtins')
  25
  26         # check HAVE_GCC_THREAD_LOCAL_STORAGE
  27         conf.CHECK_CODE('''
  28             __thread int tls;
  29
  30             int main(void) {
  31                 return 0;
  32             }
  33             ''',
  34             'HAVE_GCC_THREAD_LOCAL_STORAGE',
  35             addmain=False,
  36             msg='Checking for thread local storage')
  37
  38         # check HAVE_CONSTRUCTOR_ATTRIBUTE
  39         conf.CHECK_CODE('''
  40             void test_constructor_attribute(void) __attribute__ ((constructor));
  41
  42             void test_constructor_attribute(void)
  43             {
  44                 return;
  45             }
  46
  47             int main(void) {
  48                 return 0;
  49             }
  50             ''',
  51             'HAVE_CONSTRUCTOR_ATTRIBUTE',
  52             addmain=False,
  53             msg='Checking for library constructor support')
  54
  55         # check HAVE_DESTRUCTOR_ATTRIBUTE
  56         conf.CHECK_CODE('''
  57             void test_destructor_attribute(void) __attribute__ ((destructor));
  58
  59             void test_destructor_attribute(void)
  60             {
  61                 return;
  62             }
  63
  64             int main(void) {
  65                 return 0;
  66             }
  67             ''',
  68             'HAVE_DESTRUCTOR_ATTRIBUTE',
  69             addmain=False,
  70             msg='Checking for library destructor support')
  71
  72         if Options.options.address_sanitizer:
  73             # check HAVE_ADDRESS_SANITIZER_ATTRIBUTE
  74             conf.CHECK_CODE('''
  75                 void test_address_sanitizer_attribute(void) __attribute__((no_sanitize_address));
  76
  77                 void test_address_sanitizer_attribute(void)
  78                 {
  79                     return;
  80                 }
  81
  82                 int main(void) {
  83                     return 0;
  84                 }
  85                 ''',
  86                 'HAVE_ADDRESS_SANITIZER_ATTRIBUTE',
  87                 addmain=False,
  88                 cflags='-Wall -Wextra -Werror',
  89                 msg='Checking for address sanitizer attribute')
  90
  91         # check HAVE_FUNCTION_ATTRIBUTE_FORMAT
  92         conf.CHECK_CODE('''
  93             void log_fn(const char *format, ...) __attribute__ ((format (printf, 1, 2)));
  94
  95             int main(void) {
  96                 return 0;
  97             }
  98             ''',
  99             'HAVE_FUNCTION_ATTRIBUTE_FORMAT',
 100             addmain=False,
 101             msg='Checking for printf format validation support')
 102         # Prototype checks
 103         conf.CHECK_C_PROTOTYPE('setgroups',
 104                         'int setgroups(int ngroups, const gid_t *grouplist)',
 105                         define='HAVE_SETGROUPS_INT', headers='unistd.h sys/types.h')
 106         conf.CHECK_C_PROTOTYPE('syscall',
 107                         'int syscall(int number, ...)',
 108                         define='HAVE_SYSCALL_INT', headers='unistd.h sys/syscall.h')
 109
 110         conf.CHECK_FUNCS('getresuid getresgid')
 111
 112         # Create full path to uid_wrapper
 113         srcdir = os.path.realpath(conf.srcdir)
 114         libuid_wrapper_so_path = srcdir + '/bin/default/lib/uid_wrapper/libuid-wrapper.so'
 115
 116     conf.DEFINE('LIBUID_WRAPPER_SO_PATH', libuid_wrapper_so_path)
 117     conf.DEFINE('UID_WRAPPER', 1)
 118
 119 def build(bld):
 120     if not bld.CONFIG_SET("USING_SYSTEM_UID_WRAPPER"):
 121         # We need to do it this way or the library wont work.
 122         # Using private_library=True will add symbol version which
 123         # breaks preloading!
 124         bld.SAMBA_LIBRARY('uid_wrapper',
 125                           source='uid_wrapper.c',
 126                           cflags='-DNDEBUG',
 127                           deps='dl',
 128                           install=False,
 129                           realname='libuid-wrapper.so')
 130