[gedit] Implemented fallback strategy for saving files when opening files read/write is not supported

[Jesse van den Kieboom <jessevdk src gnome org>]

commit 1dcef327b6030e2a4feffab58762c824c126136f
Author: Jesse van den Kieboom <jesse icecrew nl>
Date:   Sun May 10 22:02:16 2009 +0200

    Implemented fallback strategy for saving files when opening files read/write is not supported
    
    This should fix a problem with file systems that do not support opening files for read/write
    (such as the fuse file system: curlftpfs). The strategy is to open the file write only when read/write
    fails with ENOTSUP. This means that we will not be able to make a backup (and the user receives
    a warning for this), but at least we can safe the file now.
---
 gedit/gedit-local-document-saver.c |    9 +++++++++
 1 files changed, 9 insertions(+), 0 deletions(-)

diff --git a/gedit/gedit-local-document-saver.c b/gedit/gedit-local-document-saver.c
index c1818b7..82017a2 100644
--- a/gedit/gedit-local-document-saver.c
+++ b/gedit/gedit-local-document-saver.c
@@ -816,6 +816,15 @@ save_file (GeditLocalDocumentSaver *lsaver)
 	else if (errno == EEXIST)
 	{
 		lsaver->priv->fd = open (lsaver->priv->local_path, O_RDWR);
+
+		if (lsaver->priv->fd == -1 && errno == ENOTSUP)
+		{
+			/* Open for RDWR failed because it is not supported, open for write
+			 * only. This will disable creating backups in the fallback
+			 * strategy, but at least we can write the new file */
+			lsaver->priv->fd = open (lsaver->priv->local_path, O_WRONLY);
+		}
+
 		if (lsaver->priv->fd != -1)
 		{
 			next_phase = (GSourceFunc) save_existing_local_file;