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authorfenner <fenner@FreeBSD.org>1998-09-15 19:36:32 +0000
committerfenner <fenner@FreeBSD.org>1998-09-15 19:36:32 +0000
commitcfc42b58f229425374e675f86614cf26ffa356e4 (patch)
tree6bd786e664682d3877b9cca3efa525ac67d8e005 /contrib/tcpdump/savestr.c
parenta9b9c86c8a0ccde5c1480bf5a0ba250d949a6d65 (diff)
downloadFreeBSD-src-cfc42b58f229425374e675f86614cf26ffa356e4.zip
FreeBSD-src-cfc42b58f229425374e675f86614cf26ffa356e4.tar.gz
Virgin import of LBL tcpdump v3.4
Diffstat (limited to 'contrib/tcpdump/savestr.c')
-rw-r--r--contrib/tcpdump/savestr.c67
1 files changed, 67 insertions, 0 deletions
diff --git a/contrib/tcpdump/savestr.c b/contrib/tcpdump/savestr.c
new file mode 100644
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--- /dev/null
+++ b/contrib/tcpdump/savestr.c
@@ -0,0 +1,67 @@
+/*
+ * Copyright (c) 1997
+ * The Regents of the University of California. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that: (1) source code distributions
+ * retain the above copyright notice and this paragraph in its entirety, (2)
+ * distributions including binary code include the above copyright notice and
+ * this paragraph in its entirety in the documentation or other materials
+ * provided with the distribution, and (3) all advertising materials mentioning
+ * features or use of this software display the following acknowledgement:
+ * ``This product includes software developed by the University of California,
+ * Lawrence Berkeley Laboratory and its contributors.'' Neither the name of
+ * the University nor the names of its contributors may 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
+ * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
+ */
+
+#ifndef lint
+static const char rcsid[] =
+ "@(#) $Header: savestr.c,v 1.2 97/05/09 14:52:31 leres Exp $ (LBL)";
+#endif
+
+#include <sys/types.h>
+
+#ifdef HAVE_MALLOC_H
+#include <malloc.h>
+#endif
+#include <stdio.h>
+#include <stdlib.h>
+
+#include "gnuc.h"
+#ifdef HAVE_OS_PROTO_H
+#include "os-proto.h"
+#endif
+
+#include "savestr.h"
+
+/* A replacement for strdup() that cuts down on malloc() overhead */
+char *
+savestr(register const char *str)
+{
+ register u_int size;
+ register char *p;
+ static char *strptr = NULL;
+ static u_int strsize = 0;
+
+ size = strlen(str) + 1;
+ if (size > strsize) {
+ strsize = 1024;
+ if (strsize < size)
+ strsize = size;
+ strptr = (char *)malloc(strsize);
+ if (strptr == NULL) {
+ fprintf(stderr, "savestr: malloc\n");
+ exit(1);
+ }
+ }
+ (void)strcpy(strptr, str);
+ p = strptr;
+ strptr += size;
+ strsize -= size;
+ return (p);
+}
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