fix(util): stop write log to stderr, when FLAGS_logtostderr is false

Signed-off-by: NaturalSelect <[email protected]>

src/common/log_util.cpp

@@ -2,26 +2,12 @@
 
 #include <gflags/gflags.h>
 #include <glog/logging.h>
-#include <sys/stat.h>
-#include <fcntl.h>
-
-static int DisableStderr() {
-    // NOTE: use "/dev/stderr" to reopen stderr fd
-    int fd =  ::open("/dev/null",O_APPEND|O_WRONLY);
-    if (fd == -1) {
-        return -1;
-    }
-    int r = ::dup2(fd,::fileno(stderr));
-    if (r == -1) {
-        return r;
-    }
-    ::close(fd);
-    return 0;
-}
 
 void curve::common::InitGoogleLogging(const char *argv0) {
     if (!FLAGS_logtostderr && !FLAGS_alsologtostderr) {
-        DisableStderr();
+        // NOTE: FLAGS_stderrthreshold don't controlled by FLAGS_logtostderr
+        // glog stil write log to stderr even if FLAGS_logtostderr is false.
+        FLAGS_stderrthreshold = 3;
     }
     google::InitGoogleLogging(argv0);
 }