From 3d248eaa0594e352c4ee235c0309ff5a6140d215 Mon Sep 17 00:00:00 2001
From: Johann Latocha
Date: Tue, 31 Jul 2012 19:32:44 +0200
Subject: [SERVER] IPC, delete image TODO: unlink file

---
 src/server/utils.c | 58 +++++++++++++++++++++++++++++++++++++++++++++++++++++-
 1 file changed, 57 insertions(+), 1 deletion(-)

(limited to 'src/server/utils.c')

diff --git a/src/server/utils.c b/src/server/utils.c
index c91142e..0be1569 100644
--- a/src/server/utils.c
+++ b/src/server/utils.c
@@ -178,7 +178,7 @@ int dnbd3_add_image(dnbd3_image_t *image, char *file)
     g_key_file_set_integer(gkf, image->group, "rid", image->rid);
     g_key_file_set_string(gkf, image->group, "file", image->file);
     g_key_file_set_string(gkf, image->group, "servers", image->serverss);
-    g_key_file_set_string(gkf, image->group, "cache_file", image->cache_file);
+    g_key_file_set_string(gkf, image->group, "cache", image->cache_file);
 
     gchar* data = g_key_file_to_data(gkf, NULL, NULL);
 
@@ -200,6 +200,62 @@ int dnbd3_add_image(dnbd3_image_t *image, char *file)
     }
 }
 
+int dnbd3_del_image(dnbd3_image_t *image, char *file)
+{
+	if (image->rid == 0)
+	{
+        printf("ERROR: Delete with rid=0 is not allowed\n");
+        return ERROR_RID;
+	}
+
+	dnbd3_image_t* tmp = dnbd3_get_image(image->vid, image->rid);
+	if (!tmp)
+	{
+        printf("ERROR: Image not found: (%d,%d)\n", image->vid, image->rid);
+        return ERROR_IMAGE_NOT_FOUND;
+	}
+
+	GSList *iterator = NULL;
+    for (iterator = _dnbd3_clients; iterator; iterator = iterator->next)
+    {
+        dnbd3_client_t *client = iterator->data;
+        if (tmp == client->image)
+        {
+        	printf("ERROR: Delete is not allowed, image is in use (%d,%d)\n", tmp->vid, tmp->rid);
+        	return ERROR_IMAGE_IN_USE;
+        }
+    }
+
+    GKeyFile* gkf;
+    gkf = g_key_file_new();
+    if (!g_key_file_load_from_file(gkf, file, G_KEY_FILE_NONE, NULL))
+    {
+        printf("ERROR: Config file not found: %s\n", file);
+        exit(EXIT_FAILURE);
+    }
+
+    g_key_file_remove_group(gkf, tmp->group, NULL);
+    gchar* data = g_key_file_to_data(gkf, NULL, NULL);
+
+    FILE* f = fopen(file,"w");
+    if (f)
+    {
+    	fputs((char*) data, f);
+    	fclose(f);
+        g_free(data);
+        g_key_file_free(gkf);
+        // TODO: unlink image file
+        return 0;
+    }
+    else
+    {
+    	g_free(data);
+    	g_key_file_free(gkf);
+    	printf("ERROR: Config file is not writable: %s\n", file);
+    	return ERROR_CONFIG_FILE_PERMISSIONS;
+    }
+}
+
 dnbd3_image_t* dnbd3_get_image(int vid, int rid)
 {
     int i, max = 0;
-- 
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