X-Git-Url: http://git.archive.openwrt.org/?p=project%2Fubox.git;a=blobdiff_plain;f=log%2Flogd.c;h=18788fed9a3cfa342e29cefc6498aeebbba337ef;hp=07aee2bdad2acd5572fc0033b5621e65941f6324;hb=HEAD;hpb=f8d3d1672a3ad901f0cb1ad0418cd9547450c125

diff --git a/log/logd.c b/log/logd.c
index 07aee2b..18788fe 100644
--- a/log/logd.c
+++ b/log/logd.c
@@ -34,12 +34,14 @@ static LIST_HEAD(clients);
 enum {
 	READ_LINES,
 	READ_STREAM,
+	READ_ONESHOT,
 	__READ_MAX
 };
 
 static const struct blobmsg_policy read_policy[__READ_MAX] = {
 	[READ_LINES] = { .name = "lines", .type = BLOBMSG_TYPE_INT32 },
 	[READ_STREAM] = { .name = "stream", .type = BLOBMSG_TYPE_BOOL },
+	[READ_ONESHOT] = { .name = "oneshot", .type = BLOBMSG_TYPE_BOOL },
 };
 
 static const struct blobmsg_policy write_policy =
@@ -68,6 +70,14 @@ static void client_notify_state(struct ustream *s)
 	client_close(s);
 }
 
+static void client_notify_write(struct ustream *s, int bytes)
+{
+	if (ustream_pending_data(s, true))
+		return;
+
+	client_close(s);
+}
+
 static void
 log_fill_msg(struct blob_buf *b, struct log_head *l)
 {
@@ -84,12 +94,13 @@ read_log(struct ubus_context *ctx, struct ubus_object *obj,
 		struct blob_attr *msg)
 {
 	struct client *cl;
-	struct blob_attr *tb[__READ_MAX] = { 0 };
+	struct blob_attr *tb[__READ_MAX] = {};
 	struct log_head *l;
 	int count = 0;
 	int fds[2];
 	int ret;
 	bool stream = true;
+	bool oneshot = false;
 	void *c, *e;
 
 	if (!stream)
@@ -101,15 +112,17 @@ read_log(struct ubus_context *ctx, struct ubus_object *obj,
 			count = blobmsg_get_u32(tb[READ_LINES]);
 		if (tb[READ_STREAM])
 			stream = blobmsg_get_bool(tb[READ_STREAM]);
-	}
-
-	if (pipe(fds) == -1) {
-		fprintf(stderr, "logd: failed to create pipe: %s\n", strerror(errno));
-		return -1;
+		if (tb[READ_ONESHOT])
+			oneshot = blobmsg_get_bool(tb[READ_ONESHOT]);
 	}
 
 	l = log_list(count, NULL);
 	if (stream) {
+		if (pipe(fds) == -1) {
+			fprintf(stderr, "logd: failed to create pipe: %m\n");
+			return -1;
+		}
+
 		ubus_request_set_fd(ctx, req, fds[0]);
 		cl = calloc(1, sizeof(*cl));
 		cl->s.stream.notify_state = client_notify_state;
@@ -124,6 +137,11 @@ read_log(struct ubus_context *ctx, struct ubus_object *obj,
 			if (ret < 0)
 				break;
 		}
+
+		if (oneshot) {
+			cl->s.stream.notify_write = client_notify_write;
+			client_notify_write(&cl->s.stream, 0);
+		}
 	} else {
 		blob_buf_init(&b, 0);
 		c = blobmsg_open_array(&b, "log");
@@ -149,10 +167,18 @@ write_log(struct ubus_context *ctx, struct ubus_object *obj,
 	char *event;
 
 	if (msg) {
+		int len;
+
 		blobmsg_parse(&write_policy, 1, &tb, blob_data(msg), blob_len(msg));
 		if (tb) {
 			event = blobmsg_get_string(tb);
-			log_add(event, strlen(event) + 1, SOURCE_SYSLOG);
+			len = strlen(event) + 1;
+			if (len > LOG_LINE_SIZE) {
+				len = LOG_LINE_SIZE;
+				event[len - 1] = 0;
+			}
+
+			log_add(event, len, SOURCE_SYSLOG);
 		}
 	}