Warn users when using pkg tools if it looks like they

be be pkgng users.

Reviewed by:	bapt (earlier version)
Reviewed by:	kwm
Approved by:	cperciva
MFC after:	3 days

usr.sbin/pkg_install/add/main.c

@@ -135,6 +135,7 @@ main(int argc, char **argv)
     static char temppackageroot[MAXPATHLEN];
     static char pkgaddpath[MAXPATHLEN];
 
+    warnpkgng();
     if (*argv[0] != '/' && strchr(argv[0], '/') != NULL)
 	PkgAddCmd = realpath(argv[0], pkgaddpath);
     else

usr.sbin/pkg_install/create/main.c

@@ -72,6 +72,7 @@ main(int argc, char **argv)
     int ch;
     char **pkgs, **start, *tmp;
 
+    warnpkgng();
     pkgs = start = argv;
     while ((ch = getopt_long(argc, argv, opts, longopts, NULL)) != -1)
 	switch(ch) {

usr.sbin/pkg_install/delete/main.c

@@ -67,6 +67,7 @@ main(int argc, char **argv)
     const char *tmp;
     struct stat stat_s;
 
+    warnpkgng();
     pkgs = start = argv;
     while ((ch = getopt_long(argc, argv, opts, longopts, NULL)) != -1)
 	switch(ch) {

usr.sbin/pkg_install/info/main.c

@@ -68,6 +68,7 @@ main(int argc, char **argv)
     char **pkgs, **start;
     char *pkgs_split;
 
+    warnpkgng();
     whead = malloc(sizeof(struct which_head));
     if (whead == NULL)
 	err(2, NULL);

usr.sbin/pkg_install/lib/Makefile

@@ -3,7 +3,7 @@
 LIB=	install
 INTERNALLIB=
 SRCS=	file.c msg.c plist.c str.c exec.c global.c pen.c match.c \
-	deps.c version.c pkgwrap.c url.c
+	deps.c version.c pkgwrap.c url.c pkgng.c
 
 WARNS?=	3
 WFORMAT?=	1

usr.sbin/pkg_install/lib/lib.h

@@ -157,6 +157,7 @@ const char	*make_playpen(char *, off_t);
 char		*where_playpen(void);
 int		leave_playpen(void);
 off_t		min_free(const char *);
+void		warnpkgng(void);
 
 /* String */
 char 		*get_dash_string(char **);

usr.sbin/pkg_install/lib/pkgng.c

@@ -0,0 +1,38 @@
+/*
+ * FreeBSD install - a package for the installation and maintenance
+ * of non-core utilities.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * Eitan Adler
+ *
+ * detect pkgng's existence and warn
+ *
+ */
+
+#include <sys/cdefs.h>
+__FBSDID("$FreeBSD$");
+
+#include "lib.h"
+#include <err.h>
+
+void warnpkgng(void) {
+	char pkgngpath[MAXPATHLEN];
+	char *pkgngdir;
+
+	pkgngdir = getenv("PKG_DBDIR");
+	if (pkgngdir == NULL)
+		pkgngdir = "/var/db/pkg";
+	strcpy(pkgngpath, pkgngdir);
+	strcat(pkgngpath, "/local.sqlite");
+
+	if (access(pkgngpath, F_OK) == 0)
+		warnx("Don't use the pkg_ tools if you are using pkgng");
+}

usr.sbin/pkg_install/updating/main.c

@@ -87,6 +87,7 @@ main(int argc, char *argv[])
 	DIR *dir;
 	FILE *fd;
 
+	warnpkgng();
 	while ((ch = getopt_long(argc, argv, opts, longopts, NULL)) != -1) {
 		switch (ch) {
 			case 'd':

usr.sbin/pkg_install/version/main.c

@@ -58,6 +58,7 @@ main(int argc, char **argv)
 {
     int ch, cmp = 0;
 
+    warnpkgng();
     if (argc == 4 && !strcmp(argv[1], "-t")) {
 	cmp = version_cmp(argv[2], argv[3]);
 	printf(cmp > 0 ? ">\n" : (cmp < 0 ? "<\n" : "=\n"));