1 files changed, 95 insertions, 0 deletions
diff --git a/src/alloc.c b/src/alloc.c
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index 0000000..add992f
--- /dev/null
+++ b/src/alloc.c
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+/*===========================================================================
+ Copyright (c) 1998-2000, The Santa Cruz Operation 
+ All rights reserved.
+ 
+ Redistribution and use in source and binary forms, with or without
+ modification, are permitted provided that the following conditions are met:
+
+ *Redistributions of source code must retain the above copyright notice,
+ this list of conditions and the following disclaimer.
+
+ *Redistributions in binary form must reproduce the above copyright notice,
+ this list of conditions and the following disclaimer in the documentation
+ and/or other materials provided with the distribution.
+
+ *Neither name of The Santa Cruz Operation 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 BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS ``AS
+ IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
+ THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE
+ LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ INTERRUPTION)
+ HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
+ DAMAGE. 
+ =========================================================================*/
+
+/* memory allocation functions */
+
+#include <stdio.h>
+#include <string.h>
+#include "alloc.h"
+
+#include "global.h" /* for postfatal() */
+
+static char const rcsid[] = "$Id: alloc.c,v 1.8 2006/07/23 20:59:20 broeker Exp $";
+
+static	void	*alloctest(void *p);
+
+/* let autoconf find out if <stdlib.h> is available. This test will
+ * succeed more reliably than the defined(__STDC__) one I replaced */
+#if STDC_HEADERS
+# include <stdlib.h>
+#else
+char	*calloc(), *malloc(), *realloc(), *strcpy();
+#endif
+
+/* allocate a string */
+
+char *
+my_strdup(char *s)
+{
+	return(strcpy(mymalloc(strlen(s) + 1), s));
+}
+
+
+/* version of malloc that only returns if successful */
+void *
+mymalloc(size_t size)
+{
+    return(alloctest(malloc((unsigned) size)));
+}
+
+
+/* version of calloc that only returns if successful */
+void *
+mycalloc(size_t nelem, size_t size)
+{
+    return(alloctest(calloc((unsigned) nelem, (unsigned) size)));
+}
+
+
+/* version of realloc that only returns if successful */
+void *
+myrealloc(void *p, size_t size)
+{
+    return(alloctest(realloc(p, (unsigned) size)));
+}
+
+
+/* check for memory allocation failure */
+static	void *
+alloctest(void *p)
+{
+    if (p == NULL) {
+	postfatal("\n%s: out of storage\n", argv0);
+	/* NOTREACHED */
+    }
+    return(p);
+}