[gvfs] fuse: Pass the correct flags when reopening output stream

[Ross Lagerwall <rossl src gnome org>]

commit 58db1bd073a8f5f0eaadd9cc56f57c952e43f49e
Author: Ross Lagerwall <rosslagerwall gmail com>
Date:   Tue Jul 29 17:41:45 2014 +0100

    fuse: Pass the correct flags when reopening output stream
    
    If a file is open for reading and writing, ensure to pass the O_APPEND
    flag if necessary when reopening the output stream.  This allows a
    write-read-write sequence to work properly if the file is opened for
    O_APPEND.  The O_TRUNC flag is not passed since this would cause a
    write-read-write sequence to truncate the file on the second write.  As
    it is, the second write fails with ENOTSUP since this kind of operation
    is not supported by GVFS.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=632296

 client/gvfsfusedaemon.c |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/client/gvfsfusedaemon.c b/client/gvfsfusedaemon.c
index de37c3b..54593db 100644
--- a/client/gvfsfusedaemon.c
+++ b/client/gvfsfusedaemon.c
@@ -1503,7 +1503,7 @@ vfs_write (const gchar *path, const gchar *buf, size_t len, off_t offset,
         {
           g_mutex_lock (&fh->mutex);
 
-          result = setup_output_stream (file, fh, 0);
+          result = setup_output_stream (file, fh, fi->flags & O_APPEND);
           if (result == 0)
             {
               result = write_stream (fh, fi->flags & O_APPEND,
@@ -1989,7 +1989,7 @@ vfs_ftruncate (const gchar *path, off_t size, struct fuse_file_info *fi)
         {
           g_mutex_lock (&fh->mutex);
 
-          result = setup_output_stream (file, fh, 0);
+          result = setup_output_stream (file, fh, fi->flags & O_APPEND);
 
           if (result == 0)
             result = truncate_stream (file, fh, size);