[PATCH 4/6] nv: Allow to set/remove multiple variables with one command

[Sascha Hauer]

It's convenient to set/remove multiple nv variables in one go. With
this patch we iterate over the remaining nonopts instead of expecting
exactly one nonopt.

Signed-off-by: Sascha Hauer <s.hauer at pengutronix.de>
---
 commands/nv.c | 28 +++++++++++++++-------------
 1 file changed, 15 insertions(+), 13 deletions(-)

diff --git a/commands/nv.c b/commands/nv.c
index e312368..a1fb095 100644
--- a/commands/nv.c
+++ b/commands/nv.c
@@ -27,7 +27,7 @@ static int do_nv(int argc, char *argv[])
 {
 	int opt;
 	int do_remove = 0, do_save = 0;
-	int ret;
+	int ret, i;
 	char *value;
 
 	while ((opt = getopt(argc, argv, "rs")) > 0) {
@@ -54,19 +54,21 @@ static int do_nv(int argc, char *argv[])
 	argc -= optind;
 	argv += optind;
 
-	if (argc != 1)
+	if (argc < 1)
 		return COMMAND_ERROR_USAGE;
 
-	value = strchr(argv[0], '=');
-	if (value) {
-		*value = 0;
-		value++;
-	}
+	for (i = 0; i < argc; i++) {
+		value = strchr(argv[0], '=');
+		if (value) {
+			*value = 0;
+			value++;
+		}
 
-	if (do_remove)
-		ret = nvvar_remove(argv[0]);
-	else
-		ret = nvvar_add(argv[0], value);
+		if (do_remove)
+			ret = nvvar_remove(argv[i]);
+		else
+			ret = nvvar_add(argv[i], value);
+	}
 
 	return ret;
 }
@@ -78,14 +80,14 @@ BAREBOX_CMD_HELP_TEXT("global variables of the same name. Their value is saved i
 BAREBOX_CMD_HELP_TEXT("'saveenv' or explicitly with 'nv -s'")
 BAREBOX_CMD_HELP_TEXT("")
 BAREBOX_CMD_HELP_TEXT("Options:")
-BAREBOX_CMD_HELP_OPT("-r", "remove a non volatile variable")
+BAREBOX_CMD_HELP_OPT("-r", "remove non volatile variables")
 BAREBOX_CMD_HELP_OPT("-s", "Save NV variables")
 BAREBOX_CMD_HELP_END
 
 BAREBOX_CMD_START(nv)
 	.cmd		= do_nv,
 	BAREBOX_CMD_DESC("create or set non volatile variables")
-	BAREBOX_CMD_OPTS("[-r] VAR[=VALUE]")
+	BAREBOX_CMD_OPTS("[-r] VAR[=VALUE] ...")
 	BAREBOX_CMD_GROUP(CMD_GRP_ENV)
 	BAREBOX_CMD_HELP(cmd_nv_help)
 BAREBOX_CMD_END
-- 
2.8.1