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      1 dnl
      2 dnl Copyright (c) Red Hat Inc., 2008
      3 dnl
      4 dnl This program is free software;  you can redistribute it and/or modify
      5 dnl it under the terms of the GNU General Public License as published by
      6 dnl the Free Software Foundation; either version 2 of the License, or
      7 dnl (at your option) any later version.
      8 dnl
      9 dnl This program is distributed in the hope that it will be useful,
     10 dnl but WITHOUT ANY WARRANTY;  without even the implied warranty of
     11 dnl MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See
     12 dnl the GNU General Public License for more details.
     13 dnl
     14 dnl You should have received a copy of the GNU General Public License
     15 dnl along with this program;  if not, write to the Free Software
     16 dnl Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
     17 dnl
     18 dnl Author: Masatake YAMATO <yamato (a] redhat.com>
     19 dnl
     20 
     21 dnl
     22 dnl LTP_CHECK_SYSCALL_SIGNALFD
     23 dnl --------------------------
     24 dnl
     25 dnl * Checking the existence of the libc wrapper for signalfd.
     26 dnl   If it exists, a shell variable LTP_SYSCALL_SIGNALFD_FUNCTION is set to "yes".
     27 dnl
     28 dnl * Checking the existence of signalfd.h.
     29 dnl   If it exists, a shell variable LTP_SYSCALL_SIGNALFD_HEADER is set to "yes".
     30 dnl
     31 dnl * Checking the prefix used in fileds for signalfd_siginfo structure.
     32 dnl   If it exists, a shell variable LTP_SYSCALL_SIGNALFD_FIELD_PREFIX is set to "given".
     33 dnl
     34 dnl About cpp macros defined in this macro,
     35 dnl see testcases/kernel/syscalls/signalfd/signalfd01.c of ltp.
     36 dnl
     37 
     38 AC_DEFUN([LTP_CHECK_SYSCALL_SIGNALFD],
     39 [dnl
     40 _LTP_CHECK_SYSCALL_SIGNALFD_FUNCTION
     41 _LTP_CHECK_SYSCALL_SIGNALFD_HEADER
     42 
     43 if test x"$LTP_SYSCALL_SIGNALFD_HEADER" = xyes; then
     44    _LTP_CHECK_SYSCALL_SIGNALFD_FIELD_PREFIX
     45 fi]dnl
     46 )dnl
     47 
     48 dnl _LTP_CHECK_SYSCALL_SIGNALFD_FUNCTION
     49 dnl ------------------------------------
     50 dnl
     51 dnl
     52 AC_DEFUN([_LTP_CHECK_SYSCALL_SIGNALFD_FUNCTION],[dnl
     53 AC_CHECK_FUNCS(signalfd,[LTP_SYSCALL_SIGNALFD_FUNCTION=yes])])
     54 
     55 dnl _LTP_CHECK_SYSCALL_SIGNALFD_HEADER
     56 dnl ----------------------------------
     57 dnl
     58 dnl
     59 AC_DEFUN([_LTP_CHECK_SYSCALL_SIGNALFD_HEADER],
     60 [dnl
     61 AC_CHECK_HEADERS([sys/signalfd.h linux/types.h])
     62 AC_CHECK_HEADERS([linux/signalfd.h signalfd.h],[dnl
     63 LTP_SYSCALL_SIGNALFD_HEADER=yes],,[dnl
     64 #ifdef HAVE_LINUX_TYPES_H
     65 #include <linux/types.h>
     66 #endif
     67 ]dnl
     68 )dnl
     69 ]dnl
     70 )dnl
     71 
     72 dnl _LTP_CHECK_SYSCALL_SIGNALFD_FIELD_PREFIX
     73 dnl ----------------------------------------
     74 dnl
     75 dnl
     76 AC_DEFUN([_LTP_CHECK_SYSCALL_SIGNALFD_FIELD_PREFIX],
     77 [dnl
     78 AC_CHECK_MEMBERS([struct signalfd_siginfo.ssi_signo, struct signalfd_siginfo.signo],[dnl
     79 LTP_SYSCALL_SIGNALFD_FIELD_PREFIX=given],,[dnl
     80 #if defined HAVE_SYS_SIGNALFD_H
     81 #include <sys/signalfd.h>
     82 #elif defined HAVE_LINUX_SIGNALFD_H
     83 #ifdef HAVE_LINUX_TYPES_H
     84 #include <linux/types.h>
     85 #endif
     86 #include <linux/signalfd.h>
     87 #elif defined HAVE_SIGNALFD_H
     88 #include <signalfd.h>
     89 #endif])
     90 ]dnl
     91 )dnl
     92