From ad4d5b163bcc2eba82adbd439b94d4bd02188610 Mon Sep 17 00:00:00 2001
From: David Sterba <dsterba@suse.com>
Date: Fri, 1 Oct 2021 15:10:26 +0200
Subject: [PATCH] btrfs-progs: subvol show: print send and receive generation
 and timestamp

There are some send/receive related data not printed in subvol show,
while they're exported by the ioctls. Print them for convenience:

  $ btrfs subvol show test
  test
	  Name: 		test
	  UUID: 		dc16dd1b-825f-3245-94a8-557672d6cf85
	  Parent UUID: 		-
	  Received UUID: 	-
	  Creation time: 	2021-05-17 16:17:14 +0200
	  Subvolume ID: 	19112
	  Generation: 		7730702
	  Gen at creation:	7730701
	  Parent ID: 		5
	  Top level ID: 	5
	  Flags: 		-
	  Send transid: 	0
	  Send time: 		2021-05-17 16:17:14 +0200
	  Receive transid: 	0
	  Receive time: 	-
	  Snapshot(s):
				  test-snap

Signed-off-by: David Sterba <dsterba@suse.com>
---
 cmds/subvolume.c | 21 +++++++++++++++++++++
 1 file changed, 21 insertions(+)

diff --git a/cmds/subvolume.c b/cmds/subvolume.c
index f5a1230b..10672bab 100644
--- a/cmds/subvolume.c
+++ b/cmds/subvolume.c
@@ -1209,6 +1209,27 @@ static int cmd_subvol_show(const struct cmd_struct *cmd, int argc, char **argv)
 	else
 		printf("\tFlags: \t\t\t-\n");
 
+	printf("\tSend transid: \t\t%" PRIu64 "\n", subvol.stransid);
+	printf("\tSend time: \t\t%s\n", tstr);
+	if (subvol.stime.tv_sec) {
+		struct tm tm;
+
+		localtime_r(&subvol.stime.tv_sec, &tm);
+		strftime(tstr, 256, "%Y-%m-%d %X %z", &tm);
+	} else {
+		strcpy(tstr, "-");
+	}
+	printf("\tReceive transid: \t%" PRIu64 "\n", subvol.rtransid);
+	if (subvol.rtime.tv_sec) {
+		struct tm tm;
+
+		localtime_r(&subvol.rtime.tv_sec, &tm);
+		strftime(tstr, 256, "%Y-%m-%d %X %z", &tm);
+	} else {
+		strcpy(tstr, "-");
+	}
+	printf("\tReceive time: \t\t%s\n", tstr);
+
 	/* print the snapshots of the given subvol if any*/
 	printf("\tSnapshot(s):\n");