Source/cmGetPipes.cxx

   1 /* Distributed under the OSI-approved BSD 3-Clause License.  See accompanying
   2    file Copyright.txt or https://cmake.org/licensing for details.  */
   3 #include "cmGetPipes.h"
   4
   5 #include <cm3p/uv.h>
   6 #include <fcntl.h>
   7
   8 #if defined(_WIN32) && !defined(__CYGWIN__)
   9 #  include <io.h>
  10
  11 int cmGetPipes(int* fds)
  12 {
  13   SECURITY_ATTRIBUTES attr;
  14   HANDLE readh, writeh;
  15   attr.nLength = sizeof(attr);
  16   attr.lpSecurityDescriptor = nullptr;
  17   attr.bInheritHandle = FALSE;
  18   if (!CreatePipe(&readh, &writeh, &attr, 0))
  19     return uv_translate_sys_error(GetLastError());
  20   fds[0] = _open_osfhandle((intptr_t)readh, 0);
  21   fds[1] = _open_osfhandle((intptr_t)writeh, 0);
  22   if (fds[0] == -1 || fds[1] == -1) {
  23     CloseHandle(readh);
  24     CloseHandle(writeh);
  25     return uv_translate_sys_error(GetLastError());
  26   }
  27   return 0;
  28 }
  29 #else
  30 #  include <cerrno>
  31
  32 #  include <unistd.h>
  33
  34 int cmGetPipes(int* fds)
  35 {
  36   if (pipe(fds) == -1) {
  37     return uv_translate_sys_error(errno);
  38   }
  39
  40   if (fcntl(fds[0], F_SETFD, FD_CLOEXEC) == -1 ||
  41       fcntl(fds[1], F_SETFD, FD_CLOEXEC) == -1) {
  42     close(fds[0]);
  43     close(fds[1]);
  44     return uv_translate_sys_error(errno);
  45   }
  46   return 0;
  47 }
  48 #endif