[gnome-keyring/wip/fork-fixes: 4/6] main: use GInputStream and GOutputStream

[Cosimo Cecchi <cosimoc src gnome org>]

commit 6f4639e63986ce02a1510bacf7a6d0f7cb519fc9
Author: Cosimo Cecchi <cosimoc gnome org>
Date:   Fri Oct 16 11:52:12 2015 -0700

    main: use GInputStream and GOutputStream
    
    To ensure there are no short reads/writes.

 daemon/gkd-main.c |   40 +++++++++++++++++++++++++++-------------
 1 files changed, 27 insertions(+), 13 deletions(-)
---
diff --git a/daemon/gkd-main.c b/daemon/gkd-main.c
index 134870c..7a8972c 100644
--- a/daemon/gkd-main.c
+++ b/daemon/gkd-main.c
@@ -58,6 +58,8 @@
 #include <sys/stat.h>
 #include <sys/wait.h>
 
+#include <gio/gunixinputstream.h>
+#include <gio/gunixoutputstream.h>
 #include <glib.h>
 #include <glib/gi18n.h>
 #include <glib-object.h>
@@ -507,22 +509,27 @@ print_environment_from_fd (int fd)
 {
        char *output;
        gsize output_size;
-       gsize bytes_read;
-
-       bytes_read = read (fd, &output_size, sizeof (output_size));
-
-       if (bytes_read < sizeof (output_size))
+       GInputStream *stream;
+       gboolean res;
+
+       stream = g_unix_input_stream_new (fd, TRUE);
+       res = g_input_stream_read_all (stream,
+                                      &output_size, sizeof (output_size),
+                                      NULL, NULL, NULL);
+       if (!res)
                exit (1);
 
        output = g_malloc0 (output_size);
-       bytes_read = read (fd, output, output_size);
-
-       if (bytes_read < output_size)
+       res = g_input_stream_read_all (stream,
+                                      output, output_size,
+                                      NULL, NULL, NULL);
+       if (!res)
                exit (1);
 
        printf ("%s\n", output);
        fflush (stdout);
        g_free (output);
+       g_object_unref (stream);
 }
 
 static void
@@ -530,7 +537,8 @@ send_environment_and_finish_parent (int fd)
 {
        char *output;
        gsize output_size;
-       gsize bytes_written;
+       GOutputStream *stream;
+       gboolean res;
 
        if (fd < 0) {
                print_environment ();
@@ -539,16 +547,22 @@ send_environment_and_finish_parent (int fd)
 
        output = g_strjoinv ("\n", (gchar **) gkd_util_get_environment ());
        output_size = strlen (output) + 1;
-       bytes_written = write (fd, &output_size, sizeof (output_size));
 
-       if (bytes_written < sizeof (output_size))
+       stream = g_unix_output_stream_new (fd, TRUE);
+       res = g_output_stream_write_all (stream,
+                                        &output_size, sizeof (output_size),
+                                        NULL, NULL, NULL);
+       if (!res)
                exit (1);
 
-       bytes_written = write (fd, output, output_size);
-       if (bytes_written < output_size)
+       res = g_output_stream_write_all (stream,
+                                        output, output_size,
+                                        NULL, NULL, NULL);
+       if (!res)
                exit (1);
 
        g_free (output);
+       g_object_unref (stream);
 }
 
 static gboolean