Introduce notion of the package tools revision and allow to wrap all tools

included into pkg_install according to the content of /var/db/pkg_install.conf
file, which specifies version and alternative location of the tools. Format
of the said file is very simple: one line which specifies revision of the
alternative version of the tools and their location separated by space,
i.e.:

20030102 /usr/local/sbin

This would allow bsd.port.mk to install and use up to date version of tools
on older system from ports.

Also add new `-P' flag to pkg_info, which causes it to report currently
installed version of package tools.

Discussed with:	will

3 files changed, 32 insertions, 18 deletions

diff --git a/usr.sbin/pkg_install/info/info.h b/usr.sbin/pkg_install/info/info.h
index 9f4b52f..94a8b5b 100644
--- a/usr.sbin/pkg_install/info/info.h
+++ b/usr.sbin/pkg_install/info/info.h
@@ -33,22 +33,23 @@
 #define MAXNAMESIZE  20
 #endif
 
-#define	SHOW_COMMENT	0x0001
-#define SHOW_DESC	0x0002
-#define SHOW_PLIST	0x0004
-#define SHOW_INSTALL	0x0008
-#define SHOW_DEINSTALL	0x0010
-#define SHOW_REQUIRE	0x0020
-#define SHOW_PREFIX	0x0040
-#define SHOW_INDEX	0x0080
-#define SHOW_FILES	0x0100
-#define SHOW_DISPLAY	0x0200
-#define SHOW_REQBY	0x0400
-#define SHOW_MTREE	0x0800
-#define SHOW_SIZE	0x1000
-#define SHOW_ORIGIN	0x2000
-#define SHOW_CKSUM	0x4000
-#define SHOW_FMTREV	0x8000
+#define SHOW_COMMENT	0x00001
+#define SHOW_DESC	0x00002
+#define SHOW_PLIST	0x00004
+#define SHOW_INSTALL	0x00008
+#define SHOW_DEINSTALL	0x00010
+#define SHOW_REQUIRE	0x00020
+#define SHOW_PREFIX	0x00040
+#define SHOW_INDEX	0x00080
+#define SHOW_FILES	0x00100
+#define SHOW_DISPLAY	0x00200
+#define SHOW_REQBY	0x00400
+#define SHOW_MTREE	0x00800
+#define SHOW_SIZE	0x01000
+#define SHOW_ORIGIN	0x02000
+#define SHOW_CKSUM	0x04000
+#define SHOW_FMTREV	0x08000
+#define SHOW_PTREV	0x10000
 
 struct which_entry {
     TAILQ_ENTRY(which_entry) next;
diff --git a/usr.sbin/pkg_install/info/main.c b/usr.sbin/pkg_install/info/main.c
index c1c8816..401cf13 100644
--- a/usr.sbin/pkg_install/info/main.c
+++ b/usr.sbin/pkg_install/info/main.c
@@ -26,7 +26,7 @@ __FBSDID("$FreeBSD$");
 #include "info.h"
 #include <err.h>
 
-static char Options[] = "acdDe:fgGhiIkl:LmoO:pqrRst:vVW:x";
+static char Options[] = "acdDe:fgGhiIkl:LmoO:pPqrRst:vVW:x";
 
 int	Flags		= 0;
 match_t	MatchType	= MATCH_GLOB;
@@ -177,6 +177,10 @@ main(int argc, char **argv)
 		break;
 	    }
 
+	case 'P':
+	    Flags = SHOW_PTREV;
+	    break;
+
 	case 'h':
 	case '?':
 	default:
@@ -188,6 +192,13 @@ main(int argc, char **argv)
     argc -= optind;
     argv += optind;
 
+    if (Flags & SHOW_PTREV) {
+	if (!Quiet)
+	    printf("Package tools revision: ");
+	printf("%d\n", PKG_INSTALL_VERSION);
+	exit(0);
+    }
+
     /* Set some reasonable defaults */
     if (!Flags)
 	Flags = SHOW_COMMENT | SHOW_DESC | SHOW_REQBY;
diff --git a/usr.sbin/pkg_install/info/pkg_info.1 b/usr.sbin/pkg_install/info/pkg_info.1
index c4a97ba..f618e01 100644
--- a/usr.sbin/pkg_install/info/pkg_info.1
+++ b/usr.sbin/pkg_install/info/pkg_info.1
@@ -25,7 +25,7 @@
 .Nd a utility for displaying information on software packages
 .Sh SYNOPSIS
 .Nm
-.Op Fl cdDfgGiIkLmopqrRsvVx
+.Op Fl cdDfgGiIkLmopPqrRsvVx
 .Op Fl e Ar package
 .Op Fl l Ar prefix
 .Op Fl t Ar template
@@ -174,6 +174,8 @@ indeed to overflow it.
 .Ed
 .It Fl V
 Show revision number of the packing list format.
+.It Fl P
+Show revision number of package tools.
 .El
 .Sh TECHNICAL DETAILS
 Package info is either extracted from package files named on the