lib/uid_wrapper/wscript

   1 #!/usr/bin/env python
   2
   3 import Options
   4 import os, sys
   5
   6 VERSION="1.2.4"
   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         if Options.options.address_sanitizer:
  39             # check HAVE_ADDRESS_SANITIZER_ATTRIBUTE
  40             conf.CHECK_CODE('''
  41                 void test_address_sanitizer_attribute(void) __attribute__((no_sanitize_address));
  42
  43                 void test_address_sanitizer_attribute(void)
  44                 {
  45                     return;
  46                 }
  47
  48                 int main(void) {
  49                     return 0;
  50                 }
  51                 ''',
  52                 'HAVE_ADDRESS_SANITIZER_ATTRIBUTE',
  53                 addmain=False,
  54                 cflags='-Wall -Wextra -Werror',
  55                 msg='Checking for address sanitizer attribute')
  56
  57         # check HAVE_FUNCTION_ATTRIBUTE_FORMAT
  58         conf.CHECK_CODE('''
  59             void log_fn(const char *format, ...) __attribute__ ((format (printf, 1, 2)));
  60
  61             int main(void) {
  62                 return 0;
  63             }
  64             ''',
  65             'HAVE_FUNCTION_ATTRIBUTE_FORMAT',
  66             addmain=False,
  67             msg='Checking for printf format validation support')
  68         # Prototype checks
  69         conf.CHECK_C_PROTOTYPE('setgroups',
  70                         'int setgroups(int ngroups, const gid_t *grouplist)',
  71                         define='HAVE_SETGROUPS_INT', headers='unistd.h sys/types.h')
  72         conf.CHECK_C_PROTOTYPE('syscall',
  73                         'int syscall(int number, ...)',
  74                         define='HAVE_SYSCALL_INT', headers='unistd.h sys/syscall.h')
  75
  76         if (sys.platform.rfind('linux') > -1):
  77             conf.CHECK_CODE('''
  78 #if defined(HAVE_UNISTD_H)
  79 #include <unistd.h>
  80 #endif
  81 #include <stdlib.h>
  82 #include <stdio.h>
  83 #include <sys/types.h>
  84 #include <errno.h>
  85
  86 #ifdef HAVE_SYS_PRIV_H
  87 #include <sys/priv.h>
  88 #endif
  89 #ifdef HAVE_SYS_ID_H
  90 #include <sys/id.h>
  91 #endif
  92
  93 #if defined(HAVE_SYSCALL_H)
  94 #include <syscall.h>
  95 #endif
  96
  97 #if defined(HAVE_SYS_SYSCALL_H)
  98 #include <sys/syscall.h>
  99 #endif
 100
 101 syscall(SYS_setresuid32, -1, -1, -1);
 102 syscall(SYS_setresgid32, -1, -1, -1);
 103 syscall(SYS_setreuid32, -1, -1);
 104 syscall(SYS_setregid32, -1, -1);
 105 syscall(SYS_setuid32, -1);
 106 syscall(SYS_setgid32, -1);
 107 syscall(SYS_setgroups32, 0, NULL);
 108 ''',
 109                 'HAVE_LINUX_32BIT_SYSCALLS',
 110                 msg="Checking whether Linux has 32-bit credential calls");
 111
 112         conf.CHECK_FUNCS('getresuid getresgid')
 113
 114         # Create full path to uid_wrapper
 115         blddir = os.path.realpath(conf.blddir)
 116         libuid_wrapper_so_path = blddir + '/default/lib/uid_wrapper/libuid-wrapper.so'
 117
 118     conf.DEFINE('LIBUID_WRAPPER_SO_PATH', libuid_wrapper_so_path)
 119     conf.DEFINE('UID_WRAPPER', 1)
 120
 121 def build(bld):
 122     if not bld.CONFIG_SET("USING_SYSTEM_UID_WRAPPER"):
 123         # We need to do it this way or the library wont work.
 124         # Using private_library=True will add symbol version which
 125         # breaks preloading!
 126         bld.SAMBA_LIBRARY('uid_wrapper',
 127                           source='uid_wrapper.c',
 128                           deps='dl',
 129                           install=False,
 130                           realname='libuid-wrapper.so')
 131