add a cpio implementation to tools directory

cpio utility is a mess in point of portability.
For example NetBSD cpio implementation does not support
userid and groupid changes for the archive. This
feature is required for initramfs filesystem targets.
This cpio is from the Heirloom project.

Fix needed rebuild of tools, when changing targets.

1 files changed, 81 insertions, 0 deletions

diff --git a/tools/cpio/src/ib_getw.c b/tools/cpio/src/ib_getw.c
new file mode 100644
index 000000000..b7f2e6762
--- /dev/null
+++ b/tools/cpio/src/ib_getw.c
@@ -0,0 +1,81 @@
+/*
+ * Copyright (c) 2003 Gunnar Ritter
+ *
+ * This software is provided 'as-is', without any express or implied
+ * warranty. In no event will the authors be held liable for any damages
+ * arising from the use of this software.
+ *
+ * Permission is granted to anyone to use this software for any purpose,
+ * including commercial applications, and to alter it and redistribute
+ * it freely, subject to the following restrictions:
+ *
+ * 1. The origin of this software must not be misrepresented; you must not
+ *    claim that you wrote the original software. If you use this software
+ *    in a product, an acknowledgment in the product documentation would be
+ *    appreciated but is not required.
+ *
+ * 2. Altered source versions must be plainly marked as such, and must not be
+ *    misrepresented as being the original software.
+ *
+ * 3. This notice may not be removed or altered from any source distribution.
+ */
+/*	Sccsid @(#)ib_getw.c	1.5 (gritter) 7/16/04	*/
+
+#include	<stdlib.h>
+#include	<string.h>
+#include	"iblok.h"
+#include	"mbtowi.h"
+
+char *
+ib_getw(struct iblok *ip, wint_t *wc, int *len)
+{
+	size_t	rest;
+	int	c, i, n;
+
+	i = 0;
+	rest = ip->ib_mend - ip->ib_mcur;
+	if (rest && ip->ib_mcur > ip->ib_mbuf) {
+		do
+			ip->ib_mbuf[i] = ip->ib_mcur[i];
+		while (i++, --rest);
+	} else if (ip->ib_incompl) {
+		ip->ib_incompl = 0;
+		*wc = WEOF;
+		ip->ib_mend = ip->ib_mcur = NULL;
+		return NULL;
+	}
+	if (i == 0) {
+		c = ib_get(ip);
+		if (c == EOF) {
+			*wc = WEOF;
+			ip->ib_mend = ip->ib_mcur = NULL;
+			return NULL;
+		}
+		ip->ib_mbuf[i++] = (char)c;
+	}
+	if (ip->ib_mbuf[0] & 0200) {
+		while (ip->ib_mbuf[i-1] != '\n' && i < ip->ib_mb_cur_max &&
+				ip->ib_incompl == 0) {
+			c = ib_get(ip);
+			if (c != EOF)
+				ip->ib_mbuf[i++] = (char)c;
+			else
+				ip->ib_incompl = 1;
+		}
+		n = mbtowi(wc, ip->ib_mbuf, i);
+		if (n < 0) {
+			*len = 1;
+			*wc = WEOF;
+		} else if (n == 0) {
+			*len = 1;
+			*wc = '\0';
+		} else
+			*len = n;
+	} else {
+		*wc = ip->ib_mbuf[0];
+		*len = n = 1;
+	}
+	ip->ib_mcur = &ip->ib_mbuf[*len];
+	ip->ib_mend = &ip->ib_mcur[i - *len];
+	return ip->ib_mbuf;
+}