From: Hans Dedecker <dedeckeh@gmail.com>
Date: Tue, 14 Feb 2017 10:59:14 +0000 (+0100)
Subject: config: make loglevel configurable via uci (FS#481)
X-Git-Url: http://git.lede-project.org./?a=commitdiff_plain;h=a898ee5458950203d4b2f8fec28c85313c855b91;p=project%2Fodhcpd.git

config: make loglevel configurable via uci (FS#481)

Signed-off-by: Hans Dedecker <dedeckeh@gmail.com>
---

diff --git a/README b/README
index 4ae5ef2..8c3b12c 100644
--- a/README
+++ b/README
@@ -62,6 +62,7 @@ legacy		bool	0			Enable DHCPv4 if start but
 						no dhcpv4 option set
 leasefile	string				DHCP/v6 lease/hostfile
 leasetrigger	string				Lease trigger script
+loglevel	integer 6			Syslog level priority (0-7)
 
 
 Sections of type dhcp (configure DHCP / DHCPv6 / RA / NDP service)
diff --git a/src/config.c b/src/config.c
index 5174f2c..69a3ad1 100644
--- a/src/config.c
+++ b/src/config.c
@@ -6,6 +6,7 @@
 #include <libgen.h>
 #include <string.h>
 #include <sys/stat.h>
+#include <syslog.h>
 
 #include <uci.h>
 #include <uci_blob.h>
@@ -16,7 +17,8 @@ static struct blob_buf b;
 static int reload_pipe[2];
 struct list_head leases = LIST_HEAD_INIT(leases);
 struct list_head interfaces = LIST_HEAD_INIT(interfaces);
-struct config config = {false, NULL, NULL};
+struct config config = {.legacy = false, .dhcp_cb = NULL,
+			.dhcp_statefile = NULL, .log_level = LOG_INFO};
 
 enum {
 	IFACE_ATTR_INTERFACE,
@@ -123,6 +125,7 @@ enum {
 	ODHCPD_ATTR_MAINDHCP,
 	ODHCPD_ATTR_LEASEFILE,
 	ODHCPD_ATTR_LEASETRIGGER,
+	ODHCPD_ATTR_LOGLEVEL,
 	ODHCPD_ATTR_MAX
 };
 
@@ -130,6 +133,7 @@ static const struct blobmsg_policy odhcpd_attrs[LEASE_ATTR_MAX] = {
 	[ODHCPD_ATTR_MAINDHCP] = { .name = "maindhcp", .type = BLOBMSG_TYPE_BOOL },
 	[ODHCPD_ATTR_LEASEFILE] = { .name = "leasefile", .type = BLOBMSG_TYPE_STRING },
 	[ODHCPD_ATTR_LEASETRIGGER] = { .name = "leasetrigger", .type = BLOBMSG_TYPE_STRING },
+	[ODHCPD_ATTR_LOGLEVEL] = { .name = "loglevel", .type = BLOBMSG_TYPE_INT32 },
 };
 
 const struct uci_blob_param_list odhcpd_attr_list = {
@@ -247,6 +251,15 @@ static void set_config(struct uci_section *s)
 		free(config.dhcp_cb);
 		config.dhcp_cb = strdup(blobmsg_get_string(c));
 	}
+
+	if ((c = tb[ODHCPD_ATTR_LOGLEVEL])) {
+		int log_level = (blobmsg_get_u32(c) & LOG_PRIMASK);
+
+		if (config.log_level != log_level) {
+			config.log_level = log_level;
+			setlogmask(LOG_UPTO(config.log_level));
+		}
+	}
 }
 
 static double parse_leasetime(struct blob_attr *c) {
diff --git a/src/odhcpd.c b/src/odhcpd.c
index 9a76e4d..8a18fbf 100644
--- a/src/odhcpd.c
+++ b/src/odhcpd.c
@@ -24,6 +24,7 @@
 #include <unistd.h>
 #include <signal.h>
 #include <stdbool.h>
+#include <syslog.h>
 
 #include <arpa/inet.h>
 #include <net/if.h>
@@ -52,7 +53,6 @@
 static int ioctl_sock;
 static struct nl_sock *rtnl_socket = NULL;
 static int urandom_fd = -1;
-static int log_level = LOG_INFO;
 
 static void sighandler(_unused int signal)
 {
@@ -65,7 +65,7 @@ static void print_usage(const char *app)
 	"== %s Usage ==\n\n"
 	"  -h, --help   Print this help\n"
 	"  -l level     Specify log level 0..7 (default %d)\n",
-		app, log_level
+		app, config.log_level
 	);
 }
 
@@ -80,12 +80,12 @@ int main(int argc, char **argv)
 			print_usage(argv[0]);
 			return 0;
 		case 'l':
-			log_level = atoi(optarg);
-			fprintf(stderr, "Log level set to %d\n", log_level);
+			config.log_level = (atoi(optarg) & LOG_PRIMASK);
+			fprintf(stderr, "Log level set to %d\n", config.log_level);
 			break;
 		}
 	}
-	setlogmask(LOG_UPTO(log_level));
+	setlogmask(LOG_UPTO(config.log_level));
 	uloop_init();
 
 	if (getuid() != 0) {
diff --git a/src/odhcpd.h b/src/odhcpd.h
index ceef0bf..8db3e7d 100644
--- a/src/odhcpd.h
+++ b/src/odhcpd.h
@@ -97,6 +97,7 @@ struct config {
 	bool legacy;
 	char *dhcp_cb;
 	char *dhcp_statefile;
+	int log_level;
 } config;