[ostree] core: Support named pipes

[Colin Walters <walters src gnome org>]

commit a103218fd1e154b5db686e7cfd82bc42ea36a820
Author: Colin Walters <walters verbum org>
Date:   Wed Nov 9 09:08:58 2011 -0500

    core: Support named pipes
    
    This is mainly useful for sysvinit's "/dev/initctl".

 libostree/ostree-core.c      |   21 ++++++++++++++++++++-
 libostree/ostree-repo-file.c |    2 +-
 tests/libtest.sh             |    1 +
 3 files changed, 22 insertions(+), 2 deletions(-)
---
diff --git a/libostree/ostree-core.c b/libostree/ostree-core.c
index d65636c..9b5b801 100644
--- a/libostree/ostree-core.c
+++ b/libostree/ostree-core.c
@@ -259,11 +259,15 @@ ostree_stat_and_checksum_file (int dir_fd, const char *path,
       device_id = g_strdup_printf ("%u", (guint)stbuf.st_rdev);
       g_checksum_update (content_sha256, (guint8*)device_id, strlen (device_id));
     }
+  else if (S_ISFIFO(stbuf.st_mode))
+    {
+      g_assert (objtype == OSTREE_OBJECT_TYPE_FILE);
+    }
   else
     {
       g_set_error (error, G_IO_ERROR,
                    G_IO_ERROR_FAILED,
-                   "Unsupported file '%s' (must be regular, symbolic link, or device)",
+                   "Unsupported file '%s' (must be regular, symbolic link, fifo, or character/block device)",
                    path);
       goto out;
     }
@@ -477,6 +481,10 @@ ostree_pack_object (GOutputStream     *output,
           device = g_file_info_get_attribute_uint32 (finfo, G_FILE_ATTRIBUTE_UNIX_DEVICE);
           object_size = 4;
         }
+      else if (S_ISFIFO (mode))
+        {
+          object_size = 0;
+        }
       else
         g_assert_not_reached ();
 
@@ -525,6 +533,9 @@ ostree_pack_object (GOutputStream     *output,
             goto out;
           g_assert (bytes_written == 4);
         }
+      else if (S_ISFIFO (mode))
+        {
+        }
       else
         g_assert_not_reached ();
     }
@@ -774,6 +785,14 @@ unpack_file (const char   *path,
           goto out;
         }
     }
+  else if (S_ISFIFO (mode))
+    {
+      if (mkfifo (dest_path, mode) < 0)
+        {
+          ot_util_set_error_from_errno (error, errno);
+          goto out;
+        }
+    }
   else
     {
       g_set_error (error, G_IO_ERROR, G_IO_ERROR_FAILED,
diff --git a/libostree/ostree-repo-file.c b/libostree/ostree-repo-file.c
index 6626872..6d5162e 100644
--- a/libostree/ostree-repo-file.c
+++ b/libostree/ostree-repo-file.c
@@ -827,7 +827,7 @@ query_child_info_file_archive (OstreeRepo       *repo,
     file_type = G_FILE_TYPE_SYMBOLIC_LINK;
   else if (S_ISREG (mode))
     file_type = G_FILE_TYPE_REGULAR;
-  else if (S_ISBLK (mode) || S_ISCHR(mode))
+  else if (S_ISBLK (mode) || S_ISCHR(mode) || S_ISFIFO(mode))
     file_type = G_FILE_TYPE_SPECIAL;
   else
     {
diff --git a/tests/libtest.sh b/tests/libtest.sh
index 8ebedf7..4e3795a 100644
--- a/tests/libtest.sh
+++ b/tests/libtest.sh
@@ -90,6 +90,7 @@ setup_test_repository () {
     $OSTREE commit -b test2 -s "Test Commit 1" -m "Commit body first"
 
     mkdir baz
+    mkfifo baz/afifo  # named pipe
     echo moo > baz/cow
     echo alien > baz/saucer
     mkdir baz/deeper