Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.

===================================================================
RCS file: /ftp/cvs/cvsroot/src/sbin/gpt/resize.c,v
rcsdiff: /ftp/cvs/cvsroot/src/sbin/gpt/resize.c,v: warning: Unknown phrases like `commitid ...;' are present.
retrieving revision 1.22
retrieving revision 1.22.16.1
diff -u -p -r1.22 -r1.22.16.1
--- src/sbin/gpt/resize.c	2015/12/04 16:54:28	1.22
+++ src/sbin/gpt/resize.c	2019/06/10 22:05:33	1.22.16.1
@@ -33,7 +33,7 @@
 __FBSDID("$FreeBSD: src/sbin/gpt/add.c,v 1.14 2006/06/22 22:05:28 marcel Exp $");
 #endif
 #ifdef __RCSID
-__RCSID("$NetBSD: resize.c,v 1.22 2015/12/04 16:54:28 christos Exp $");
+__RCSID("$NetBSD: resize.c,v 1.22.16.1 2019/06/10 22:05:33 christos Exp $");
 #endif
 
 #include <sys/types.h>
@@ -52,14 +52,14 @@ __RCSID("$NetBSD: resize.c,v 1.22 2015/1
 static int cmd_resize(gpt_t, int, char *[]);
 
 static const char *resizehelp[] = {
-	"-i index [-a alignment] [-s size]",
+	"[-i index | -b blocknr] [-a alignment] [-s size]",
 };
 
 struct gpt_cmd c_resize = {
 	"resize",
 	cmd_resize,
 	resizehelp, __arraycount(resizehelp),
-	0,
+	GPT_SYNC,
 };
 
 #define usage() gpt_usage(NULL, &c_resize)
@@ -131,17 +131,32 @@ static int
 cmd_resize(gpt_t gpt, int argc, char *argv[])
 {
 	int ch;
-	off_t alignment = 0, sectors, size = 0;
+	off_t alignment = 0, sectors, start = 0, size = 0;
 	unsigned int entry = 0;
+	map_t m;
 
-	while ((ch = getopt(argc, argv, GPT_AIS)) != -1) {
-		if (gpt_add_ais(gpt, &alignment, &entry, &size, ch) == -1)
+	while ((ch = getopt(argc, argv, GPT_AIS "b:")) != -1) {
+		if (ch == 'b')
+			gpt_human_get(gpt, &start);
+		else if (gpt_add_ais(gpt, &alignment, &entry, &size, ch) == -1)
 			return usage();
 	}
 
 	if (argc != optind)
 		return usage();
 
+	if (start > 0) {
+		for (m = map_first(gpt); m != NULL; m = m->map_next) {
+			if (m->map_type != MAP_TYPE_GPT_PART ||
+			    m->map_index < 1)
+				continue;
+			if (start != m->map_start)
+				continue;
+			entry = m->map_index;
+			break;
+		}
+	}
+
 	if ((sectors = gpt_check_ais(gpt, alignment, entry, size)) == -1)
 		return -1;