mirror of https://github.com/hak5/openwrt.git
37 lines
1.1 KiB
Diff
37 lines
1.1 KiB
Diff
|
From 32055d52ca43d867d6dbb763dc5213a8d3536a23 Mon Sep 17 00:00:00 2001
|
||
|
|
From: Daniel Sabogal <dsabogalcc@gmail.com>
|
||
|
|
Date: Thu, 15 Sep 2016 11:27:30 -0400
|
||
|
|
Subject: fix if_indextoname error case
|
||
|
|
|
||
|
|
posix requires errno to be set to ENXIO if the interface does not exist.
|
||
|
|
linux returns ENODEV instead so we handle this.
|
||
|
|
---
|
||
|
|
src/network/if_indextoname.c | 7 ++++++-
|
||
|
|
1 file changed, 6 insertions(+), 1 deletion(-)
|
||
|
|
|
||
|
|
diff --git a/src/network/if_indextoname.c b/src/network/if_indextoname.c
|
||
|
|
index 6ee7f13..3b368bf 100644
|
||
|
|
--- a/src/network/if_indextoname.c
|
||
|
|
+++ b/src/network/if_indextoname.c
|
||
|
|
@@ -3,6 +3,7 @@
|
||
|
|
#include <sys/socket.h>
|
||
|
|
#include <sys/ioctl.h>
|
||
|
|
#include <string.h>
|
||
|
|
+#include <errno.h>
|
||
|
|
#include "syscall.h"
|
||
|
|
|
||
|
|
char *if_indextoname(unsigned index, char *name)
|
||
|
|
@@ -14,5 +15,9 @@ char *if_indextoname(unsigned index, char *name)
|
||
|
|
ifr.ifr_ifindex = index;
|
||
|
|
r = ioctl(fd, SIOCGIFNAME, &ifr);
|
||
|
|
__syscall(SYS_close, fd);
|
||
|
|
- return r < 0 ? 0 : strncpy(name, ifr.ifr_name, IF_NAMESIZE);
|
||
|
|
+ if (r < 0) {
|
||
|
|
+ if (errno == ENODEV) errno = ENXIO;
|
||
|
|
+ return 0;
|
||
|
|
+ }
|
||
|
|
+ return strncpy(name, ifr.ifr_name, IF_NAMESIZE);
|
||
|
|
}
|
||
|
|
--
|
||
|
|
cgit v0.11.2
|