[gvfs] archive: Retry operations that return ARCHIVE_RETRY

[Ross Lagerwall <rossl src gnome org>]

commit 3e5c3085b680101d95ae6b3ddcef3cae2b12f099
Author: Ross Lagerwall <rosslagerwall gmail com>
Date:   Wed Aug 20 20:50:07 2014 +0100

    archive: Retry operations that return ARCHIVE_RETRY
    
    Retry operations that return ARCHIVE_RETRY since it indicates that the
    operation has failed, the archive_entry is not valid, and the operation
    should be retried to see if it succeeds.
    
    This fixes a segfault on a truncated archive where
    archive_read_next_header would return ARCHIVE_RETRY and the backend
    would continue to try and use the invalid archive_entry that was
    returned.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=735120

 daemon/gvfsbackendarchive.c |    6 ++++++
 1 files changed, 6 insertions(+), 0 deletions(-)
---
diff --git a/daemon/gvfsbackendarchive.c b/daemon/gvfsbackendarchive.c
index 0377c70..32c9c5c 100644
--- a/daemon/gvfsbackendarchive.c
+++ b/daemon/gvfsbackendarchive.c
@@ -375,6 +375,8 @@ archive_entry_determine_size (GVfsArchive          *archive,
            DEBUG ("archive_read_data_block: result = %d, error = '%s'\n", result, archive_error_string 
(archive->archive));
            archive_set_error (archive->archive, ARCHIVE_OK, "No error");
            archive_clear_error (archive->archive);
+            if (result == ARCHIVE_RETRY)
+              continue;
          }
 
          size += read;
@@ -540,6 +542,8 @@ create_file_tree (GVfsBackendArchive *ba, GVfsJob *job)
            DEBUG ("archive_read_next_header: result = %d, error = '%s'\n", result, archive_error_string 
(archive->archive));
            archive_set_error (archive->archive, ARCHIVE_OK, "No error");
            archive_clear_error (archive->archive);
+            if (result == ARCHIVE_RETRY)
+              continue;
          }
   
          ArchiveFile *file = archive_file_get_from_path (ba->files, 
@@ -725,6 +729,8 @@ do_open_for_read (GVfsBackend *       backend,
            DEBUG ("do_open_for_read: result = %d, error = '%s'\n", result, archive_error_string 
(archive->archive));
            archive_set_error (archive->archive, ARCHIVE_OK, "No error");
            archive_clear_error (archive->archive);
+            if (result == ARCHIVE_RETRY)
+              continue;
          }
 
           entry_pathname = archive_entry_pathname (entry);