From 7201d7b009a2746363c61aeb57220a774cb21177 Mon Sep 17 00:00:00 2001
From: Peter Wemm <peter@FreeBSD.org>
Date: Thu, 13 Feb 2003 01:00:26 +0000
Subject: [PATCH] Show the paritition types that we recognize in human readable
 format.  eg: pluto2# gpt show da0      start       end      size  contents   
       0         0         1  PMBR          1         1         1  Pri GPT
 header          2        33        32  Pri GPT table         34    401595   
 401562  GPT part - EFI System partition     401596    925883    524288  GPT
 part - FreeBSD ufs partition     925884   9314491   8388608  GPT part -
 FreeBSD swap partition ... It'll print a plain uuid string for unrecognized
 types.

---
 sbin/gpt/show.c | 32 ++++++++++++++++++++++++++++----
 1 file changed, 28 insertions(+), 4 deletions(-)

diff --git a/sbin/gpt/show.c b/sbin/gpt/show.c
index 3e9ebc83ceda..6acfbe00d11a 100644
--- a/sbin/gpt/show.c
+++ b/sbin/gpt/show.c
@@ -49,6 +49,33 @@ usage_show(void)
 	exit(1);
 }
 
+static const char *
+friendly(uuid_t *t)
+{
+	uuid_t efi_slice = GPT_ENT_TYPE_EFI;
+	uuid_t freebsd = GPT_ENT_TYPE_FREEBSD;
+	uuid_t swap = GPT_ENT_TYPE_FREEBSD_SWAP;
+	uuid_t ufs = GPT_ENT_TYPE_FREEBSD_UFS;
+	uuid_t vinum = GPT_ENT_TYPE_FREEBSD_VINUM;
+	static char buf[80];
+	char *s;
+
+	if (memcmp(t, &efi_slice, sizeof(uuid_t)) == 0)
+		return "EFI System partition";
+	else if (memcmp(t, &freebsd, sizeof(uuid_t)) == 0)
+		return "FreeBSD disklabel container";
+	else if (memcmp(t, &swap, sizeof(uuid_t)) == 0)
+		return "FreeBSD swap partition";
+	else if (memcmp(t, &ufs, sizeof(uuid_t)) == 0)
+		return "FreeBSD ufs partition";
+	else if (memcmp(t, &vinum, sizeof(uuid_t)) == 0)
+		return "FreeBSD vinum partition";
+	uuid_to_string(t, &s, NULL);
+	strlcpy(buf, s, sizeof buf);
+	free(s);
+	return buf;
+}
+
 static void
 show(int fd __unused)
 {
@@ -56,7 +83,6 @@ show(int fd __unused)
 	map_t *m, *p;
 	struct mbr *mbr;
 	struct gpt_ent *ent;
-	char *s;
 	unsigned int i;
 
 	printf("  %*s", lbawidth, "start");
@@ -107,9 +133,7 @@ show(int fd __unused)
 		case MAP_TYPE_GPT_PART:
 			printf("GPT part ");
 			ent = m->map_data;
-			uuid_to_string(&ent->ent_type, &s, NULL);
-			printf("%s", s);
-			free(s);
+			printf("- %s", friendly(&ent->ent_type));
 			break;
 		case MAP_TYPE_PMBR:
 			printf("PMBR");