From c5343ba71b9fea6e3636be25a16173092f2042ba Mon Sep 17 00:00:00 2001
From: Brian Behlendorf <behlendorf1@llnl.gov>
Date: Tue, 28 Sep 2010 16:30:54 -0700
Subject: [PATCH] Fix 'zpool events' formatting for awk

To make the 'zpool events' output simple to parse with awk the extra
newline after embedded nvlists has been dropped.  This allows the
entire event to be parsed as a single whitespace seperated record.

The -H option has been added to operate in scripted mode.  For the
'zpool events' command this means don't print the header.  The usage
of -H is consistent with scripted mode for other zpool commands.
---
 cmd/zpool/zpool_main.c | 13 +++++++++----
 1 file changed, 9 insertions(+), 4 deletions(-)

diff --git a/cmd/zpool/zpool_main.c b/cmd/zpool/zpool_main.c
index 3859bf737a38..1e9b3b69e32a 100644
--- a/cmd/zpool/zpool_main.c
+++ b/cmd/zpool/zpool_main.c
@@ -241,7 +241,7 @@ get_usage(zpool_help_t idx) {
 		    "\tupgrade -v\n"
 		    "\tupgrade [-V version] <-a | pool ...>\n"));
 	case HELP_EVENTS:
-		return (gettext("\tevents [-vfc]\n"));
+		return (gettext("\tevents [-vHfc]\n"));
 	case HELP_GET:
 		return (gettext("\tget <\"all\" | property[,...]> "
 		    "<pool> ...\n"));
@@ -4228,6 +4228,7 @@ zpool_do_history(int argc, char **argv)
 
 typedef struct ev_opts {
 	int verbose;
+	int scripted;
 	int follow;
 	int clear;
 } ev_opts_t;
@@ -4342,7 +4343,7 @@ zpool_do_events_nvprint(nvlist_t *nvl, int depth)
 			printf(gettext("(embedded nvlist)\n"));
 			(void) nvpair_value_nvlist(nvp, &cnv);
 			zpool_do_events_nvprint(cnv, depth + 8);
-			printf(gettext("%*s(end %s)\n"), depth, "", name);
+			printf(gettext("%*s(end %s)"), depth, "", name);
 			break;
 
 		case DATA_TYPE_NVLIST_ARRAY: {
@@ -4472,7 +4473,8 @@ zpool_do_events_next(ev_opts_t *opts)
         cleanup_fd = open(ZFS_DEV, O_RDWR);
         VERIFY(cleanup_fd >= 0);
 
-	(void) printf(gettext("%-30s %s\n"), "TIME", "CLASS");
+	if (!opts->scripted)
+		(void) printf(gettext("%-30s %s\n"), "TIME", "CLASS");
 
 	while (1) {
 		ret = zpool_events_next(g_zfs, &nvl, &dropped,
@@ -4523,11 +4525,14 @@ zpool_do_events(int argc, char **argv)
 	int c;
 
 	/* check options */
-	while ((c = getopt(argc, argv, "vfc")) != -1) {
+	while ((c = getopt(argc, argv, "vHfc")) != -1) {
 		switch (c) {
 		case 'v':
 			opts.verbose = 1;
 			break;
+		case 'H':
+			opts.scripted = 1;
+			break;
 		case 'f':
 			opts.follow = 1;
 			break;