From: Karl Palsson <ka...@etactica.com>
Currently the loglevel is hardcoded to LOG_WARNING, even though there is
debug log messages. Allow setting the loglevel via cli option.
Include basic help text because we're adding command line options.
Signed-off-by: Karl Palsson <ka...@etactica.com>
---
Changes since v1:
Use command line arg instead of env var.
src/odhcpd.c | 26 ++++++++++++++++++++++++--
1 file changed, 24 insertions(+), 2 deletions(-)
diff --git a/src/odhcpd.c b/src/odhcpd.c
index 74830ac..4341369 100644
--- a/src/odhcpd.c
+++ b/src/odhcpd.c
@@ -54,11 +54,33 @@ static void sighandler(_unused int signal)
uloop_end();
}
+static void print_usage(const char *app)
+{
+ printf(
+ "== %s Usage ==\n\n"
+ " -h, --help Print this help\n"
+ " -l level Specify log level 0..7 (default %d)\n",
+ app, LOG_WARNING
+ );
+}
-int main()
+int main(int argc, char **argv)
{
openlog("odhcpd", LOG_PERROR | LOG_PID, LOG_DAEMON);
- setlogmask(LOG_UPTO(LOG_WARNING));
+ int opt;
+ int log_level = LOG_WARNING;
+ while ((opt = getopt(argc, argv, "hl:")) != -1) {
+ switch (opt) {
+ case 'h':
+ print_usage(argv[0]);
+ return 0;
+ case 'l':
+ log_level = atoi(optarg);
+ fprintf(stderr, "Log level set to %d\n", log_level);
+ break;
+ }
+ }
+ setlogmask(LOG_UPTO(log_level));
uloop_init();
if (getuid() != 0) {
--
2.4.11
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