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      1 // Copyright 2010 Google Inc.
      2 // All rights reserved.
      3 //
      4 // Redistribution and use in source and binary forms, with or without
      5 // modification, are permitted provided that the following conditions are
      6 // met:
      7 //
      8 // * Redistributions of source code must retain the above copyright
      9 //   notice, this list of conditions and the following disclaimer.
     10 // * Redistributions in binary form must reproduce the above copyright
     11 //   notice, this list of conditions and the following disclaimer in the
     12 //   documentation and/or other materials provided with the distribution.
     13 // * Neither the name of Google Inc. nor the names of its contributors
     14 //   may be used to endorse or promote products derived from this software
     15 //   without specific prior written permission.
     16 //
     17 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
     18 // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
     19 // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
     20 // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
     21 // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
     22 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
     23 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
     24 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
     25 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     26 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
     27 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     28 
     29 #include "utils/process/system.hpp"
     30 
     31 extern "C" {
     32 #include <sys/wait.h>
     33 
     34 #include <fcntl.h>
     35 #include <unistd.h>
     36 }
     37 
     38 namespace detail = utils::process::detail;
     39 
     40 
     41 /// Indirection to execute the dup2(2) system call.
     42 int (*detail::syscall_dup2)(const int, const int) = ::dup2;
     43 
     44 
     45 /// Indirection to execute the fork(2) system call.
     46 pid_t (*detail::syscall_fork)(void) = ::fork;
     47 
     48 
     49 /// Indirection to execute the open(2) system call.
     50 int (*detail::syscall_open)(const char*, const int, ...) = ::open;
     51 
     52 
     53 /// Indirection to execute the pipe(2) system call.
     54 int (*detail::syscall_pipe)(int[2]) = ::pipe;
     55 
     56 
     57 /// Indirection to execute the waitpid(2) system call.
     58 pid_t (*detail::syscall_waitpid)(const pid_t, int*, const int) = ::waitpid;
     59