From b6a027fe4da6f66552b533f1314e5005b16c5455 Mon Sep 17 00:00:00 2001
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From: Khem Raj <raj.khem@gmail.com>
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Date: Wed, 29 Mar 2017 23:52:36 -0700
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Subject: [PATCH 7/8] add error() API when error.h is not on platform
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sign-off-by: Khem Raj <raj.khem@gmail.com>
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---
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sysdep.c | 24 ++++++++++++++++++++++++
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sysdep.h | 2 ++
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2 files changed, 26 insertions(+)
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diff --git a/sysdep.c b/sysdep.c
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index d8f181d..2518ec1 100644
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--- a/sysdep.c
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+++ b/sysdep.c
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@@ -17,6 +17,7 @@
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GNU General Public License for more details.
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*/
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+#define _GNU_SOURCE
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#include <unistd.h>
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#include <fcntl.h>
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#include <stdlib.h>
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@@ -794,3 +795,26 @@ int setenv(const char *name, const char *value, int overwrite)
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return ret;
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}
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#endif
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+
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+#ifndef _ERROR_H_
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+#define _ERROR_H_
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+#include <stdarg.h>
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+#include <stdio.h>
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+#include <errno.h>
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+
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+void error(int status, int errnum, const char* format, ...)
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+{
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+ va_list ap;
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+
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+ fflush(stdout);
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+ fprintf(stderr, "%s: ", program_invocation_name);
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+ va_start(ap, format);
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+ vfprintf(stderr, format, ap);
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+ va_end(ap);
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+ if (errnum)
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+ fprintf(stderr, ":%d", errnum);
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+ if (status)
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+ exit(status);
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+}
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+#endif /* _ERROR_H_ */
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+
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diff --git a/sysdep.h b/sysdep.h
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index 0122b95..4e60064 100644
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--- a/sysdep.h
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+++ b/sysdep.h
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@@ -44,6 +44,8 @@ int tun_get_hwaddr(int fd, char *dev, uint8_t *hwaddr);
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#if defined(__linux__)
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#if defined(__GLIBC__)
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#include <error.h>
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+#else
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+void error(int status, int errnum, const char* format, ...);
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#endif
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#define HAVE_VASPRINTF 1
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#define HAVE_ASPRINTF 1
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--
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2.12.1
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