From dc81a51d59ccf31a5b47b989060a626e97a3d709 Mon Sep 17 00:00:00 2001
From: sr
Date: Mon, 8 Jul 2013 18:46:26 +0200
Subject: Rewriting....

---
 src/server/server.h | 62 +++++++++++++++++++++++++++++++++--------------------
 1 file changed, 39 insertions(+), 23 deletions(-)

(limited to 'src/server/server.h')

diff --git a/src/server/server.h b/src/server/server.h
index 47aa0c0..74ca1a1 100644
--- a/src/server/server.h
+++ b/src/server/server.h
@@ -28,22 +28,30 @@
 #include "../config.h"
 #include "../types.h"
 
+typedef struct
+{
+	int fd;
+} dnbd3_connection_t;
 
+/**
+ * Image struct. An image path could be something like
+ * /mnt/images/rz/zfs/Windows7 ZfS.vmdk.1
+ * and the lower_name would then be
+ * rz/zfs/windows7 zfs.vmdk
+ */
 typedef struct
 {
-	char *config_group;    // exact name of group in config file that represents this image
-	char *low_name;        // full (global) name of image, lowercased for comparison, eg. "uni-freiburg/rz/ubuntu-12.04"
-	int rid;               // revision of provided image
-	char *file;            // path to image file or device
+	char *path;            // absolute path of the image
+	char *lower_name;      // relative path, all lowercase, minus revision ID
+	int rid;               // revision of image
 	uint64_t filesize;     // size of image
-	dnbd3_server_entry_t servers[NUMBER_SERVERS]; // known alt servers that also offer that image
 	time_t atime;          // last access time
 	uint8_t *cache_map;    // cache map telling which parts are locally cached
-	char *cache_file;      // path to local cache of image (in case the image is read from a dnbd3 device)
-	char working;          // whether this image is considered working. local images are "working" if the local file exists, proxied images have to have at least one working upstream server or a complete local cache file
+	dnbd3_connection_t *uplink; // NULL = local image / completely cached, pointer to a server connection otherwise
+	char working;          // TRUE if image exists and completeness is == 100% or a working upstream proxy is connected
 	time_t delete_soft;    // unixtime telling when this image should be deleted. if there are still clients using this image it weill be kept, but new clients requesting the image will be rejected. 0 = never
 	time_t delete_hard;    // unixtime telling when this image should be deleted, no matter if there are still clients connected. 0 = never
-	uint8_t relayed;       // TRUE if relayed from other server (needs dnbd3 client module loaded)
+	pthread_spinlock_t lock;
 } dnbd3_image_t;
 
 typedef struct
@@ -51,7 +59,8 @@ typedef struct
 	uint16_t len;
 	uint8_t data[65535];
 } dnbd3_binstring_t;
-// Do not always allocate as much memory as required to hold the entire binstring struct, but only as much as is required to hold the actual data
+// Do not always allocate as much memory as required to hold the entire binstring struct,
+// but only as much as is required to hold the actual data
 #define NEW_BINSTRING(_name, _len) \
 	dnbd3_binstring_t *_name = malloc(sizeof(uint16_t) + _len); \
 	_name->len = _len
@@ -63,30 +72,37 @@ typedef struct
 	uint8_t is_server;         // TRUE if a server in proxy mode, FALSE if real client
 	pthread_t thread;
 	dnbd3_image_t *image;
+	pthread_spinlock_t lock;
 	GSList *sendqueue;         // list of dnbd3_binstring_t*
 } dnbd3_client_t;
 
 typedef struct
 {
-	gchar    *comment;
-	GSList   *namespaces;    // List of dnbd3_namespace_t
-	dnbd3_host_t host;
-	uint8_t  unreachable;
-} dnbd3_trusted_server_t;
+	time_t         last_told;
+	dnbd3_host_t   host;
+	char           comment[COMMENT_LENGTH];
+} dnbd3_alt_server_t;
 
 typedef struct
 {
-	char     *name;
-	uint8_t  auto_replicate;
-	uint8_t  recursive;
-} dnbd3_namespace_t;
+	char          comment[COMMENT_LENGTH];
+	dnbd3_host_t  host;
+	dnbd3_host_t  mask;
+} dnbd3_acess_rules_t;
 
-extern GSList *_dnbd3_clients; // of dnbd3_client_t
-extern pthread_spinlock_t _spinlock;
-extern char *_config_file_name, *_rpc_password, *_cache_dir;
-extern GSList *_dnbd3_images; // of dnbd3_image_t
-extern GSList *_trusted_servers;
+extern dnbd3_client_t *_clients[SERVER_MAX_CLIENTS];
+extern int _num_clients;
+extern pthread_spinlock_t _clients_lock;
+
+extern dnbd3_image_t *_images[SERVER_MAX_IMAGES];
+extern int _num_images;
+extern pthread_spinlock_t _images_lock;
 
+extern dnbd3_alt_server_t *_alt_servers[SERVER_MAX_ALTS];
+extern int _num_alts;
+extern pthread_spinlock_t _alts_lock;
+
+extern char *_config_file_name, *_rpc_password, *_cache_dir;
 
 #ifdef _DEBUG
 extern int _fake_delay;
-- 
cgit v1.2.3-55-g7522