pledge archivers/pigz

Similar to gzip in base, further drop promises (de)compressing to stdout
except for "cpath" which is needed for unlink(2) in pigz.c:cut_short()
which handles internal errors and SIGINT.

I also tested this with several regress/usr.bin/gzip runs on both amd64
and sparc64.

While here, do some cleanup and install unpigz as symlink since it's the
same binary.

Feedback? OK?

Index: Makefile
===================================================================
RCS file: /cvs/ports/archivers/pigz/Makefile,v
retrieving revision 1.6
diff -u -p -r1.6 Makefile
--- Makefile 25 Jan 2018 10:34:49 -0000 1.6
+++ Makefile 30 Jun 2018 16:13:03 -0000
@@ -5,7 +5,8 @@ NOT_FOR_ARCHS= ${GCC3_ARCHS}

COMMENT = parallel implementation of gzip utilizing multiple cores

-DISTNAME = pigz-2.4
+DISTNAME = pigz-2.4
+REVISION = 0
CATEGORIES = archivers
HOMEPAGE = https://zlib.net/pigz/

@@ -14,17 +15,19 @@ MAINTAINER = Thomas Pfaff <tpfaff@tp76.i
# zlib + Apache
PERMIT_PACKAGE_CDROM = Yes

+# uses pledge()
WANTLIB = c m pthread z

-MASTER_SITES = ${HOMEPAGE}
+MASTER_SITES = https://zlib.net/pigz/

-MAKE_FLAGS = CC="${CC}" CFLAGS="${CFLAGS} -Wall -Wextra"
+MAKE_FLAGS = CC="${CC}" \
+ CFLAGS="${CFLAGS}"

ALL_TARGET = pigz

do-install:
- ${INSTALL_PROGRAM} ${WRKSRC}/pigz ${PREFIX}/bin
- ${INSTALL_PROGRAM} ${WRKSRC}/unpigz ${PREFIX}/bin
+ ${INSTALL_PROGRAM} ${WRKBUILD}/pigz ${PREFIX}/bin
+ ln -sf pigz ${PREFIX}/bin/unpigz
${INSTALL_MAN} ${WRKSRC}/pigz.1 ${PREFIX}/man/man1

.include <bsd.port.mk>
Index: patches/patch-pigz_c
===================================================================
RCS file: patches/patch-pigz_c
diff -N patches/patch-pigz_c
--- /dev/null 1 Jan 1970 00:00:00 -0000
+++ patches/patch-pigz_c 30 Jun 2018 15:37:37 -0000
@@ -0,0 +1,30 @@
+$OpenBSD$
+
+Index: pigz.c
+--- pigz.c.orig
++++ pigz.c
+@@ -4307,6 +4307,11 @@ int main(int argc, char **argv) {
+ char *opts, *p; // environment default options, marker
+ ball_t err; // error information from throw()
+
++ if (pledge("stdio rpath wpath cpath fattr chown", NULL) == -1) {
++ complain("pledge");
++ exit(1);
++ }
++
+ g.ret = 0;
+ try {
+ // initialize globals
+@@ -4408,6 +4413,12 @@ int main(int argc, char **argv) {
+ else if (option(argv[n])) // process argument
+ argv[n] = NULL; // remove if option
+ option(NULL); // check for missing parameter
++
++ if (g.pipeout || g.decode == 2)
++ if (pledge("stdio rpath cpath", NULL) == -1) {
++ complain("pledge");
++ exit(1);
++ }
+
+ // process command-line filenames
+ done = 0;
Index: pkg/PLIST
===================================================================
RCS file: /cvs/ports/archivers/pigz/pkg/PLIST,v
retrieving revision 1.1.1.1
diff -u -p -r1.1.1.1 PLIST
--- pkg/PLIST 1 Dec 2013 03:19:13 -0000 1.1.1.1
+++ pkg/PLIST 30 Jun 2018 16:13:03 -0000
@@ -1,4 +1,4 @@
@comment $OpenBSD: PLIST,v 1.1.1.1 2013/12/01 03:19:13 brad Exp $
@bin bin/pigz
-@bin bin/unpigz
+bin/unpigz
@man man/man1/pigz.1