gio/tests/dbus-launch.c

   1 /*
   2  * Mock version of dbus-launch, for gdbus-unix-addresses test
   3  *
   4  * Copyright © 2015 Collabora Ltd.
   5  *
   6  * This library is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU Lesser General Public
   8  * License as published by the Free Software Foundation; either
   9  * version 2.1 of the License, or (at your option) any later version.
  10  *
  11  * This library is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * Lesser General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU Lesser General
  17  * Public License along with this library; if not, see <http://www.gnu.org/licenses/>.
  18  */
  19
  20 #include <glib.h>
  21
  22 #ifndef G_OS_UNIX
  23 #error This is a Unix-specific test helper
  24 #endif
  25
  26 #include <errno.h>
  27 #include <string.h>
  28 #include <sys/types.h>
  29 #include <unistd.h>
  30
  31 #define ME "GDBus mock version of dbus-launch"
  32
  33 static void
  34 write_all (const void *ptr,
  35            size_t      len)
  36 {
  37   const char *p = ptr;
  38
  39   while (len > 0)
  40     {
  41       gssize done = write (STDOUT_FILENO, p, len);
  42       int errsv = errno;
  43
  44       if (done == 0)
  45         {
  46           g_error ("%s: write: EOF", ME);
  47         }
  48       else if (done < 0)
  49         {
  50           if (errsv == EINTR)
  51             continue;
  52
  53           g_error ("%s: write: %s", ME, g_strerror (errsv));
  54         }
  55       else
  56         {
  57           if (len < (size_t) done)
  58             g_error ("%s: wrote too many bytes?", ME);
  59
  60           len -= done;
  61           p += done;
  62         }
  63     }
  64 }
  65
  66 int
  67 main (int   argc,
  68       char *argv[])
  69 {
  70   pid_t pid = 0x2323;
  71   long window_id = 0x42424242;
  72   const char *addr = "hello:this=address-is-from-the,mock=dbus-launch";
  73
  74   write_all (addr, strlen (addr) + 1);
  75   write_all (&pid, sizeof (pid));
  76   write_all (&window_id, sizeof (window_id));
  77   return 0;
  78 }