third_party/uid_wrapper/wscript

   1 #!/usr/bin/env python
   2
   3 from waflib import Options
   4 import os, sys
   5
   6 VERSION="1.3.1"
   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         conf.CHECK_HEADERS('gnu/lib-names.h')
  14
  15         # check HAVE_GCC_ATOMIC_BUILTINS
  16         conf.CHECK_CODE('''
  17             #include <stdbool.h>
  18             int main(void) {
  19                 bool x;
  20                 bool *p_x = &x;
  21                 __atomic_load(p_x, &x, __ATOMIC_RELAXED);
  22                 return 0;
  23             ''',
  24             'HAVE_GCC_ATOMIC_BUILTINS',
  25             addmain=False,
  26             msg='Checking for atomic builtins')
  27
  28
  29         if conf.CONFIG_SET("HAVE___THREAD"):
  30             conf.DEFINE("HAVE_GCC_THREAD_LOCAL_STORAGE", 1)
  31
  32         if Options.options.address_sanitizer:
  33             # check HAVE_ADDRESS_SANITIZER_ATTRIBUTE
  34             conf.CHECK_CODE('''
  35                 void test_address_sanitizer_attribute(void) __attribute__((no_sanitize_address));
  36
  37                 void test_address_sanitizer_attribute(void)
  38                 {
  39                     return;
  40                 }
  41
  42                 int main(void) {
  43                     return 0;
  44                 }
  45                 ''',
  46                 'HAVE_ADDRESS_SANITIZER_ATTRIBUTE',
  47                 addmain=False,
  48                 cflags='-Wall -Wextra',
  49                 strict=True,
  50                 msg='Checking for address sanitizer attribute')
  51
  52         # check HAVE_FUNCTION_ATTRIBUTE_FORMAT
  53         conf.CHECK_CODE('''
  54             void log_fn(const char *format, ...) __attribute__ ((format (printf, 1, 2)));
  55
  56             int main(void) {
  57                 return 0;
  58             }
  59             ''',
  60             'HAVE_FUNCTION_ATTRIBUTE_FORMAT',
  61             addmain=False,
  62             strict=True,
  63             msg='Checking for printf format validation support')
  64         # Prototype checks
  65         conf.CHECK_C_PROTOTYPE('setgroups',
  66                 'int setgroups(int ngroups, const gid_t *grouplist)',
  67         define='HAVE_SETGROUPS_INT', headers='unistd.h sys/types.h')
  68         conf.CHECK_C_PROTOTYPE('syscall',
  69                 'int syscall(int number, ...)',
  70         define='HAVE_SYSCALL_INT', headers='unistd.h sys/syscall.h')
  71
  72         if (sys.platform.rfind('linux') > -1):
  73             conf.CHECK_CODE('''
  74 #if defined(HAVE_UNISTD_H)
  75 #include <unistd.h>
  76 #endif
  77 #include <stdlib.h>
  78 #include <stdio.h>
  79 #include <sys/types.h>
  80 #include <errno.h>
  81
  82 #ifdef HAVE_SYS_PRIV_H
  83 #include <sys/priv.h>
  84 #endif
  85 #ifdef HAVE_SYS_ID_H
  86 #include <sys/id.h>
  87 #endif
  88
  89 #if defined(HAVE_SYSCALL_H)
  90 #include <syscall.h>
  91 #endif
  92
  93 #if defined(HAVE_SYS_SYSCALL_H)
  94 #include <sys/syscall.h>
  95 #endif
  96
  97 syscall(SYS_setresuid32, -1, -1, -1);
  98 syscall(SYS_setresgid32, -1, -1, -1);
  99 syscall(SYS_setreuid32, -1, -1);
 100 syscall(SYS_setregid32, -1, -1);
 101 syscall(SYS_setuid32, -1);
 102 syscall(SYS_setgid32, -1);
 103 syscall(SYS_setgroups32, 0, NULL);
 104 ''',
 105                 'HAVE_LINUX_32BIT_SYSCALLS',
 106                 msg="Checking whether Linux has 32-bit credential calls");
 107
 108         conf.CHECK_FUNCS('getresuid getresgid')
 109
 110         # Create full path to uid_wrapper
 111         blddir = os.path.realpath(conf.bldnode.abspath())
 112         libuid_wrapper_so_path = blddir + '/default/third_party/uid_wrapper/libuid-wrapper.so'
 113
 114     conf.DEFINE('LIBUID_WRAPPER_SO_PATH', libuid_wrapper_so_path)
 115     conf.DEFINE('UID_WRAPPER', 1)
 116
 117 def build(bld):
 118     if not bld.CONFIG_SET("USING_SYSTEM_UID_WRAPPER"):
 119         # We need to do it this way or the library wont work.
 120         # We need force_unversioned=True as symbol versioning
 121         # breaks preloading!
 122         bld.SAMBA_LIBRARY('uid_wrapper',
 123                           source='uid_wrapper.c',
 124                           deps='dl pthread',
 125                           install=False,
 126                           force_unversioned=True,
 127                           realname='libuid-wrapper.so')