src/libstrongswan/utils/compat/android.h

   1 /*
   2  * Copyright (C) 2010-2015 Tobias Brunner
   3  * Hochschule fuer Technik Rapperswil
   4  *
   5  * This program is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License as published by the
   7  * Free Software Foundation; either version 2 of the License, or (at your
   8  * option) any later version.  See <http://www.fsf.org/copyleft/gpl.txt>.
   9  *
  10  * This program is distributed in the hope that it will be useful, but
  11  * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
  12  * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  13  * for more details.
  14  */
  15
  16 /**
  17  * @defgroup android android
  18  * @{ @ingroup compat
  19  */
  20
  21 #ifndef ANDROID_H_
  22 #define ANDROID_H_
  23
  24 #include <android/api-level.h>
  25
  26 /* stuff defined in AndroidConfig.h, which is included using the -include
  27  * command-line option, thus cannot be undefined using -U CFLAGS options.
  28  * the reason we have to undefine these flags in the first place, is that
  29  * AndroidConfig.h defines them as 0, which in turn means that they are
  30  * actually defined. */
  31 #undef HAVE_BACKTRACE
  32
  33 /* sigwaitinfo() is not defined up to this API level, provide a fallback */
  34 #if __ANDROID_API__ <= 21
  35 #include <errno.h>
  36 #include <signal.h>
  37
  38 static inline int sigwaitinfo(const sigset_t *set, void *info)
  39 {
  40         int sig, err;
  41
  42         if (info)
  43         {       /* we don't replicate siginfo_t, which we don't use */
  44                 errno = EINVAL;
  45                 return -1;
  46         }
  47         err = sigwait(set, &sig);
  48         if (err != 0)
  49         {
  50                 errno = err;
  51                 sig = -1;
  52         }
  53         return sig;
  54 }
  55 #else
  56 #error Check availability of sigwaitinfo() in this API level
  57 #endif
  58
  59 #endif /** ANDROID_H_ @}*/