summaryrefslogtreecommitdiff
path: root/package/cfgfs/src/c_null.c
diff options
context:
space:
mode:
Diffstat (limited to 'package/cfgfs/src/c_null.c')
-rw-r--r--package/cfgfs/src/c_null.c78
1 files changed, 78 insertions, 0 deletions
diff --git a/package/cfgfs/src/c_null.c b/package/cfgfs/src/c_null.c
new file mode 100644
index 000000000..4806ae261
--- /dev/null
+++ b/package/cfgfs/src/c_null.c
@@ -0,0 +1,78 @@
+/* $MirOS: contrib/hosted/fwcf/c_null.c,v 1.5 2006/09/23 23:46:35 tg Exp $ */
+
+/*-
+ * Copyright (c) 2006
+ * Thorsten Glaser <tg@mirbsd.de>
+ *
+ * Licensee is hereby permitted to deal in this work without restric-
+ * tion, including unlimited rights to use, publicly perform, modify,
+ * merge, distribute, sell, give away or sublicence, provided all co-
+ * pyright notices above, these terms and the disclaimer are retained
+ * in all redistributions or reproduced in accompanying documentation
+ * or other materials provided with binary redistributions.
+ *
+ * Licensor offers the work "AS IS" and WITHOUT WARRANTY of any kind,
+ * express, or implied, to the maximum extent permitted by applicable
+ * law, without malicious intent or gross negligence; in no event may
+ * licensor, an author or contributor be held liable for any indirect
+ * or other damage, or direct damage except proven a consequence of a
+ * direct error of said person and intended use of this work, loss or
+ * other issues arising in any way out of its use, even if advised of
+ * the possibility of such damage or existence of a defect.
+ */
+
+#include <sys/param.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include "defs.h"
+#include "compress.h"
+
+__RCSID("$MirOS: contrib/hosted/fwcf/c_null.c,v 1.5 2006/09/23 23:46:35 tg Exp $");
+
+static void c_null_load(void) __attribute__((constructor));
+static int c_init(void);
+static int c_compress(char **, char *, size_t)
+ __attribute__((bounded (string, 2, 3)));
+static int c_decompress(char *, size_t, char *, size_t)
+ __attribute__((bounded (string, 1, 2)))
+ __attribute__((bounded (string, 3, 4)));
+
+static fwcf_compressor c_null = {
+ c_init, /* init */
+ c_compress, /* compress */
+ c_decompress, /* decompress */
+ "null", /* name */
+ 0 /* code */
+};
+
+static void
+c_null_load(void)
+{
+ if (compress_register(&c_null))
+ fputs("warning: cannot register compressor 'null'!\n", stderr);
+}
+
+static int
+c_init(void)
+{
+ return (0);
+}
+
+static int
+c_compress(char **dst, char *src, size_t len)
+{
+ if ((*dst = malloc(len)) == NULL)
+ return (-1);
+ memcpy(*dst, src, len);
+ return (len);
+}
+
+static int
+c_decompress(char *dst, size_t dstlen, char *src, size_t srclen)
+{
+ size_t len = MIN(srclen, dstlen);
+ memmove(dst, src, len);
+ return (len);
+}