log: check argument of 'log level' command
Check that the argument provided to the 'log level' command is in the range
between zero and CONFIG_LOG_MAX_LEVEL.
Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Reviewed-by: Simon Glass <sjg@chromium.org>
diff --git a/cmd/log.c b/cmd/log.c
index 664f7bd..78352b2 100644
--- a/cmd/log.c
+++ b/cmd/log.c
@@ -14,10 +14,18 @@
static int do_log_level(struct cmd_tbl *cmdtp, int flag, int argc,
char *const argv[])
{
- if (argc > 1)
- gd->default_log_level = simple_strtol(argv[1], NULL, 10);
- else
+ if (argc > 1) {
+ long log_level = simple_strtol(argv[1], NULL, 10);
+
+ if (log_level < 0 || log_level > _LOG_MAX_LEVEL) {
+ printf("Only log levels <= %d are supported\n",
+ _LOG_MAX_LEVEL);
+ return CMD_RET_FAILURE;
+ }
+ gd->default_log_level = log_level;
+ } else {
printf("Default log level: %d\n", gd->default_log_level);
+ }
return 0;
}