patch-2.1.32 linux/net/sunrpc/xdr.c

• Lines: 119
• Date: Thu Dec 19 09:04:19 1996
• Orig file: v2.1.31/linux/net/sunrpc/xdr.c
• Orig date: Wed Dec 31 16:00:00 1969

diff -u --recursive --new-file v2.1.31/linux/net/sunrpc/xdr.c linux/net/sunrpc/xdr.c
@@ -0,0 +1,118 @@
+/*
+ * linux/net/sunrpc/xdr.c
+ *
+ * Generic XDR support.
+ *
+ * Copyright (C) 1995, 1996 Olaf Kirch <okir@monad.swb.de>
+ */
+
+#include <linux/types.h>
+#include <linux/socket.h>
+#include <linux/string.h>
+#include <linux/in.h>
+#include <linux/sunrpc/xdr.h>
+#include <linux/sunrpc/msg_prot.h>
+
+u32	rpc_success, rpc_prog_unavail, rpc_prog_mismatch, rpc_proc_unavail,
+	rpc_garbage_args, rpc_system_err;
+u32	rpc_auth_ok, rpc_autherr_badcred, rpc_autherr_rejectedcred,
+	rpc_autherr_badverf, rpc_autherr_rejectedverf, rpc_autherr_tooweak;
+u32	xdr_zero, xdr_one, xdr_two;
+
+void
+xdr_init(void)
+{
+	static int	inited = 0;
+
+	if (inited)
+		return;
+
+	xdr_zero = htonl(0);
+	xdr_one = htonl(1);
+	xdr_two = htonl(2);
+
+	rpc_success = htonl(RPC_SUCCESS);
+	rpc_prog_unavail = htonl(RPC_PROG_UNAVAIL);
+	rpc_prog_mismatch = htonl(RPC_PROG_MISMATCH);
+	rpc_proc_unavail = htonl(RPC_PROC_UNAVAIL);
+	rpc_garbage_args = htonl(RPC_GARBAGE_ARGS);
+	rpc_system_err = htonl(RPC_SYSTEM_ERR);
+
+	rpc_auth_ok = htonl(RPC_AUTH_OK);
+	rpc_autherr_badcred = htonl(RPC_AUTH_BADCRED);
+	rpc_autherr_rejectedcred = htonl(RPC_AUTH_REJECTEDCRED);
+	rpc_autherr_badverf = htonl(RPC_AUTH_BADVERF);
+	rpc_autherr_rejectedverf = htonl(RPC_AUTH_REJECTEDVERF);
+	rpc_autherr_tooweak = htonl(RPC_AUTH_TOOWEAK);
+
+	inited = 1;
+}
+
+/*
+ * XDR functions for basic NFS types
+ */
+u32 *
+xdr_encode_netobj(u32 *p, const struct xdr_netobj *obj)
+{
+	unsigned int	quadlen = XDR_QUADLEN(obj->len);
+
+	*p++ = htonl(obj->len);
+	p[quadlen-1] = 0;	/* zero trailing bytes */
+	memcpy(p, obj->data, obj->len);
+	return p + XDR_QUADLEN(obj->len);
+}
+
+u32 *
+xdr_decode_netobj_fixed(u32 *p, void *obj, unsigned int len)
+{
+	if (ntohl(*p++) != len)
+		return NULL;
+	memcpy(obj, p, len);
+	return p + XDR_QUADLEN(len);
+}
+
+u32 *
+xdr_decode_netobj(u32 *p, struct xdr_netobj *obj)
+{
+	unsigned int	len;
+
+	if ((len = ntohl(*p++)) > XDR_MAX_NETOBJ)
+		return NULL;
+	obj->len  = len;
+	obj->data = (u8 *) p;
+	return p + XDR_QUADLEN(len);
+}
+
+u32 *
+xdr_encode_string(u32 *p, const char *string)
+{
+	int len = strlen(string);
+	int quadlen = XDR_QUADLEN(len);
+
+	p[quadlen] = 0;
+	*p++ = htonl(len);
+	memcpy(p, string, len);
+	return p + quadlen;
+}
+
+u32 *
+xdr_decode_string(u32 *p, char **sp, int *lenp, int maxlen)
+{
+	unsigned int	len;
+	char		*string;
+
+	if ((len = ntohl(*p++)) > maxlen)
+		return NULL;
+	if (lenp)
+		*lenp = len;
+	if ((len % 4) != 0) {
+		string = (char *) p;
+	} else {
+		string = (char *) (p - 1);
+		memmove(string, p, len);
+	}
+	string[len] = '\0';
+	*sp = string;
+	return p + XDR_QUADLEN(len);
+}
+