Multilink support.

[ppp.git] / pppd / tdb.h

diff --git a/pppd/tdb.h b/pppd/tdb.h
new file mode 100644 (file)
index 0000000..56ae0ac
--- /dev/null
+++ b/pppd/tdb.h
@@ -0,0 +1,77 @@
+#define STANDALONE     1
+/* 
+ * Database functions
+ * Copyright (C) Andrew Tridgell 1999
+ * 
+ * Redistribution and use in source and binary forms are permitted
+ * provided that the above copyright notice and this paragraph are
+ * duplicated in all such forms AND provided that this software or
+ * any derived work is only used as part of the PPP daemon (pppd)
+ * and related utilities.
+ * The name of the author may not be used to endorse or promote products
+ * derived from this software without specific prior written permission.
+ * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
+ * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
+ *
+ * Note: this software is also available under the Gnu Public License
+ * version 2 or later.
+ */
+
+typedef unsigned tdb_len;
+typedef unsigned tdb_off;
+
+#define TDB_MAGIC_FOOD "TDB file\n"
+
+/* this is stored at the front of every database */
+struct tdb_header {
+       char magic_food[32]; /* for /etc/magic */
+       unsigned version; /* version of the code */
+       unsigned hash_size; /* number of hash entries */
+};
+
+typedef struct {
+       char *dptr;
+       size_t dsize;
+} TDB_DATA;
+
+/* this is the context structure that is returned from a db open */
+typedef struct {
+       char *name; /* the name of the database */
+       void *map_ptr; /* where it is currently mapped */
+       int fd; /* open file descriptor for the database */
+       tdb_len map_size; /* how much space has been mapped */
+       int read_only; /* opened read-only */
+       int *locked; /* set if we have a chain locked */
+       int ecode; /* error code for last tdb error */
+       struct tdb_header header; /* a cached copy of the header */
+} TDB_CONTEXT;
+
+/* flags to tdb_store() */
+#define TDB_REPLACE 1
+#define TDB_INSERT 2
+
+/* flags for tdb_open() */
+#define TDB_CLEAR_IF_FIRST 1
+
+/* error codes */
+enum TDB_ERROR {TDB_SUCCESS=0, TDB_ERR_CORRUPT, TDB_ERR_IO, TDB_ERR_LOCK, 
+               TDB_ERR_OOM, TDB_ERR_EXISTS};
+
+#if STANDALONE
+TDB_CONTEXT *tdb_open(char *name, int hash_size, int tdb_flags,
+                     int open_flags, mode_t mode);
+char *tdb_error(TDB_CONTEXT *tdb);
+int tdb_writelock(TDB_CONTEXT *tdb);
+int tdb_writeunlock(TDB_CONTEXT *tdb);
+TDB_DATA tdb_fetch(TDB_CONTEXT *tdb, TDB_DATA key);
+int tdb_delete(TDB_CONTEXT *tdb, TDB_DATA key);
+int tdb_store(TDB_CONTEXT *tdb, TDB_DATA key, TDB_DATA dbuf, int flag);
+int tdb_close(TDB_CONTEXT *tdb);
+TDB_DATA tdb_firstkey(TDB_CONTEXT *tdb);
+TDB_DATA tdb_nextkey(TDB_CONTEXT *tdb, TDB_DATA key);
+int tdb_traverse(TDB_CONTEXT *tdb, 
+       int (*fn)(TDB_CONTEXT *tdb, TDB_DATA key, TDB_DATA dbuf, void *state),
+       void *state);
+int tdb_exists(TDB_CONTEXT *tdb, TDB_DATA key);
+#endif