Add zeroer, a command line utility for wiping unallocated space on

a filesystem.

sysutils/Makefile

@@ -634,6 +634,7 @@
     SUBDIR += xwipower
     SUBDIR += xwlans
     SUBDIR += yawho
+    SUBDIR += zeroer
     SUBDIR += zidrav
     SUBDIR += zisofs-tools
 

sysutils/zeroer/Makefile

@@ -0,0 +1,38 @@
+# New ports collection makefile for:	zeroer
+# Date created:				2 Jan 2006
+# Whom:					Emanuel Haupt <ehaupt@FreeBSD.org>
+#
+# $FreeBSD$
+#
+
+PORTNAME=	zeroer
+PORTVERSION=	0.1
+CATEGORIES=	sysutils
+MASTER_SITES=	http://critical.ch/${PORTNAME}/
+
+MAINTAINER=	ehaupt@FreeBSD.org
+COMMENT=	A command line utility for wiping unallocated space on a filesystem
+
+LIB_DEPENDS=	popt:${PORTSDIR}/devel/popt
+
+MAN1=		zeroer.1
+PLIST_FILES=	bin/zeroer
+PORTDOCS=	README
+
+CFLAGS+=	-I${LOCALBASE}/include
+LDFLAGS+=	-L${LOCALBASE}/lib -lpopt
+
+do-build:
+	${CC} ${CFLAGS} ${LDFLAGS} ${WRKSRC}/${PORTNAME}.c \
+		-o ${WRKSRC}/${PORTNAME}
+
+do-install:
+	${INSTALL_PROGRAM} ${WRKSRC}/${PORTNAME} ${PREFIX}/bin
+	${INSTALL_MAN} ${WRKSRC}/${PORTNAME}.1 ${MANPREFIX}/man/man1
+
+.if !defined(NOPORTDOCS)
+	${MKDIR} ${DOCSDIR}
+	${INSTALL_DATA} ${WRKSRC}/${PORTDOCS} ${DOCSDIR}
+.endif
+
+.include <bsd.port.mk>

sysutils/zeroer/distinfo

@@ -0,0 +1,3 @@
+MD5 (zeroer-0.1.tar.gz) = 7e48ba06395f77dd93824006ce4f805f
+SHA256 (zeroer-0.1.tar.gz) = be97127fa77979c41f0fedbd4deb0a2942df569becd3223cbe474a8ed1a35408
+SIZE (zeroer-0.1.tar.gz) = 10383

sysutils/zeroer/pkg-descr

@@ -0,0 +1,10 @@
+The zeroer utility can be used to wipe empty space on a disk. In contrary to dd,
+zeroer does not wipe existing files on a partition. It overwrites the
+unallocated disk space around existing files, which means that deleted files
+cannot be restored after processing a certain partition with zeroer.
+
+The utility's principle consists in writing huge zero-padded memory blocks to a
+file. To a certain extent this works similar to dd, however zeroer dynamically
+reduces the blockwriter's buffer size when the filesystem is going to be full.
+
+WWW: http://critical.ch/zeroer/