third_party/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_UID_WRAPPER():
  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
  27         if conf.CONFIG_SET("HAVE___THREAD"):
  28             conf.DEFINE("HAVE_GCC_THREAD_LOCAL_STORAGE", 1)
  29
  30         if Options.options.address_sanitizer:
  31             # check HAVE_ADDRESS_SANITIZER_ATTRIBUTE
  32             conf.CHECK_CODE('''
  33                 void test_address_sanitizer_attribute(void) __attribute__((no_sanitize_address));
  34
  35                 void test_address_sanitizer_attribute(void)
  36                 {
  37                     return;
  38                 }
  39
  40                 int main(void) {
  41                     return 0;
  42                 }
  43                 ''',
  44                 'HAVE_ADDRESS_SANITIZER_ATTRIBUTE',
  45                 addmain=False,
  46                 cflags='-Wall -Wextra',
  47                 strict=True,
  48                 msg='Checking for address sanitizer attribute')
  49
  50         # check HAVE_FUNCTION_ATTRIBUTE_FORMAT
  51         conf.CHECK_CODE('''
  52             void log_fn(const char *format, ...) __attribute__ ((format (printf, 1, 2)));
  53
  54             int main(void) {
  55                 return 0;
  56             }
  57             ''',
  58             'HAVE_FUNCTION_ATTRIBUTE_FORMAT',
  59             addmain=False,
  60             strict=True,
  61             msg='Checking for printf format validation support')
  62         # Prototype checks
  63         conf.CHECK_C_PROTOTYPE('setgroups',
  64                         'int setgroups(int ngroups, const gid_t *grouplist)',
  65                         define='HAVE_SETGROUPS_INT', headers='unistd.h sys/types.h')
  66         conf.CHECK_C_PROTOTYPE('syscall',
  67                         'int syscall(int number, ...)',
  68                         define='HAVE_SYSCALL_INT', headers='unistd.h sys/syscall.h')
  69
  70         if (sys.platform.rfind('linux') > -1):
  71             conf.CHECK_CODE('''
  72 #if defined(HAVE_UNISTD_H)
  73 #include <unistd.h>
  74 #endif
  75 #include <stdlib.h>
  76 #include <stdio.h>
  77 #include <sys/types.h>
  78 #include <errno.h>
  79
  80 #ifdef HAVE_SYS_PRIV_H
  81 #include <sys/priv.h>
  82 #endif
  83 #ifdef HAVE_SYS_ID_H
  84 #include <sys/id.h>
  85 #endif
  86
  87 #if defined(HAVE_SYSCALL_H)
  88 #include <syscall.h>
  89 #endif
  90
  91 #if defined(HAVE_SYS_SYSCALL_H)
  92 #include <sys/syscall.h>
  93 #endif
  94
  95 syscall(SYS_setresuid32, -1, -1, -1);
  96 syscall(SYS_setresgid32, -1, -1, -1);
  97 syscall(SYS_setreuid32, -1, -1);
  98 syscall(SYS_setregid32, -1, -1);
  99 syscall(SYS_setuid32, -1);
 100 syscall(SYS_setgid32, -1);
 101 syscall(SYS_setgroups32, 0, NULL);
 102 ''',
 103                 'HAVE_LINUX_32BIT_SYSCALLS',
 104                 msg="Checking whether Linux has 32-bit credential calls");
 105
 106         conf.CHECK_FUNCS('getresuid getresgid')
 107
 108         # Create full path to uid_wrapper
 109         blddir = os.path.realpath(conf.blddir)
 110         libuid_wrapper_so_path = blddir + '/default/third_party/uid_wrapper/libuid-wrapper.so'
 111
 112     conf.DEFINE('LIBUID_WRAPPER_SO_PATH', libuid_wrapper_so_path)
 113     conf.DEFINE('UID_WRAPPER', 1)
 114
 115 def build(bld):
 116     if not bld.CONFIG_SET("USING_SYSTEM_UID_WRAPPER"):
 117         # We need to do it this way or the library wont work.
 118         # Using private_library=True will add symbol version which
 119         # breaks preloading!
 120         bld.SAMBA_LIBRARY('uid_wrapper',
 121                           source='uid_wrapper.c',
 122                           deps='dl',
 123                           install=False,
 124                           realname='libuid-wrapper.so')