From b0174b3dda95be3858ec54570c1375f2f00e984e Mon Sep 17 00:00:00 2001
From: Frank Kolarek <fkolarek@bloomberg.net>
Date: Fri, 14 Jan 2022 14:03:25 -0500
Subject: [PATCH] On Solaris, uname() returns non-negative value

As per https://docs.oracle.com/cd/E18752_01/html/816-5167/uname-2.html#REFMAN2uname-2
Solaris version of uname() return a non-negative value on success. Modifying this code to check
for a return value of less than zero will work on Solaris as well as Linux and AIX.
---
 src/logging.cc | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/logging.cc b/src/logging.cc
index 7a64a78..2458287 100644
--- a/src/logging.cc
+++ b/src/logging.cc
@@ -238,7 +238,7 @@ static ssize_t pwrite(int fd, void* buf, size_t count, off_t offset) {
 static void GetHostName(string* hostname) {
 #if defined(HAVE_SYS_UTSNAME_H)
   struct utsname buf;
-  if (0 != uname(&buf)) {
+  if (uname(&buf) < 0) {
     // ensure null termination on failure
     *buf.nodename = '\0';
   }