lib/uid_wrapper/wscript

   1 #!/usr/bin/env python
   2
   3 import Options
   4 import os, sys
   5
   6 VERSION="1.1.1"
   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         if (sys.platform.rfind('linux') > -1):
 111             conf.CHECK_CODE('''
 112 #if defined(HAVE_UNISTD_H)
 113 #include <unistd.h>
 114 #endif
 115 #include <stdlib.h>
 116 #include <stdio.h>
 117 #include <sys/types.h>
 118 #include <errno.h>
 119
 120 #ifdef HAVE_SYS_PRIV_H
 121 #include <sys/priv.h>
 122 #endif
 123 #ifdef HAVE_SYS_ID_H
 124 #include <sys/id.h>
 125 #endif
 126
 127 #if defined(HAVE_SYSCALL_H)
 128 #include <syscall.h>
 129 #endif
 130
 131 #if defined(HAVE_SYS_SYSCALL_H)
 132 #include <sys/syscall.h>
 133 #endif
 134
 135 syscall(SYS_setresuid32, -1, -1, -1);
 136 syscall(SYS_setresgid32, -1, -1, -1);
 137 syscall(SYS_setreuid32, -1, -1);
 138 syscall(SYS_setregid32, -1, -1);
 139 syscall(SYS_setuid32, -1);
 140 syscall(SYS_setgid32, -1);
 141 syscall(SYS_setgroups32, 0, NULL);
 142 ''',
 143                 'HAVE_LINUX_32BIT_SYSCALLS',
 144                 msg="Checking whether Linux has 32-bit credential calls");
 145
 146         conf.CHECK_FUNCS('getresuid getresgid')
 147
 148         # Create full path to uid_wrapper
 149         srcdir = os.path.realpath(conf.srcdir)
 150         libuid_wrapper_so_path = srcdir + '/bin/default/lib/uid_wrapper/libuid-wrapper.so'
 151
 152     conf.DEFINE('LIBUID_WRAPPER_SO_PATH', libuid_wrapper_so_path)
 153     conf.DEFINE('UID_WRAPPER', 1)
 154
 155 def build(bld):
 156     if not bld.CONFIG_SET("USING_SYSTEM_UID_WRAPPER"):
 157         # We need to do it this way or the library wont work.
 158         # Using private_library=True will add symbol version which
 159         # breaks preloading!
 160         bld.SAMBA_LIBRARY('uid_wrapper',
 161                           source='uid_wrapper.c',
 162                           cflags='-DNDEBUG',
 163                           deps='dl',
 164                           install=False,
 165                           realname='libuid-wrapper.so')
 166