libdlog : change the return value when the backend is journal.

 - Existed : 0(success), ERRNO(fail)
 - Now : written bytes(success), ERRNO(fail)

Change-Id: Icc4e9906079942d727b677c53b909d80b093941e
Signed-off-by: Kichan Kwon <k_c.kwon@samsung.com>

diff --git a/src/libdlog/log.c b/src/libdlog/log.c
index 9955cf3..373feec 100755 (executable)
--- a/src/libdlog/log.c
+++ b/src/libdlog/log.c
@@ -92,6 +92,7 @@ static inline const char* dlog_id_to_string(log_id_t log_id)
 static int __write_to_log_sd_journal(log_id_t log_id, log_priority prio, const char *tag, const char *msg)
 {
        const char *lid_str = dlog_id_to_string(log_id);
+       int ret;
 
        pid_t tid = (pid_t)syscall(SYS_gettid);
 
@@ -134,7 +135,12 @@ static int __write_to_log_sd_journal(log_id_t log_id, log_priority prio, const c
        vec[4].iov_base = (void *)_tid;
        vec[4].iov_len = strlen(vec[4].iov_base);
 
-       return sd_journal_sendv(vec, 5);
+       ret = sd_journal_sendv(vec, 5);
+
+       if (ret == 0)
+               return (vec[0].iov_len + vec[1].iov_len + vec[2].iov_len + vec[3].iov_len + vec[4].iov_len);
+       else
+               return ret;
 }
 
 #else