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From 2a21ef4263d853616df24cc8e4c00f5a2c2980e9 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Timo=20Ter=C3=A4s?= <timo.teras@iki.fi>
Date: Wed, 18 Dec 2013 13:24:06 +0200
Subject: [PATCH] define and implement herror
---
include/netdb.h | 1 +
src/network/herror.c | 23 +++++++++++++++++++++++
2 files changed, 24 insertions(+)
create mode 100644 src/network/herror.c
diff --git a/include/netdb.h b/include/netdb.h
index 8a7013a..2dd799b 100644
--- a/include/netdb.h
+++ b/include/netdb.h
@@ -134,6 +134,7 @@ int *__h_errno_location(void);
#endif
#if defined(_GNU_SOURCE) || defined(_BSD_SOURCE)
+void herror(const char *);
const char *hstrerror(int);
int gethostbyname_r(const char *, struct hostent *, char *, size_t, struct hostent **, int *);
int gethostbyname2_r(const char *, int, struct hostent *, char *, size_t, struct hostent **, int *);
diff --git a/src/network/herror.c b/src/network/herror.c
new file mode 100644
index 0000000..25117a3
--- /dev/null
+++ b/src/network/herror.c
@@ -0,0 +1,23 @@
+#define _GNU_SOURCE
+#include <stdio.h>
+#include <string.h>
+#include <netdb.h>
+#include "stdio_impl.h"
+
+void herror(const char *msg)
+{
+ FILE *f = stderr;
+ const char *errstr = hstrerror(h_errno);
+
+ FLOCK(f);
+
+ if (msg && *msg) {
+ fwrite(msg, strlen(msg), 1, f);
+ fputc(':', f);
+ fputc(' ', f);
+ }
+ fwrite(errstr, strlen(errstr), 1, f);
+ fputc('\n', f);
+
+ FUNLOCK(f);
+}
--
1.8.5.1
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