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Add errno support to if_indextoname()

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This commit adds support in if_indextoname() to return ENXIO when
no interface is found.  This conforms to the Open Group/RFC 3493
specification

In order to leverage errno set support, the set_errno macro from
sockets.c was moved to sockets_priv.h
This commit is contained in:
Joel Cunningham 2017-02-09 22:32:29 -06:00
parent 852993029d
commit 3a7e03aaff
3 changed files with 16 additions and 16 deletions
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16
src/api/if_api.c
View File

@ -43,8 +43,10 @@
#if LWIP_SOCKET
#include "lwip/errno.h"
#include "lwip/if_api.h"
#include "lwip/netifapi.h"
#include "lwip/priv/sockets_priv.h"
/**
* @ingroup if_api
@ -59,19 +61,17 @@ char *
lwip_if_indextoname(unsigned int ifindex, char *ifname)
{
#if LWIP_NETIF_API
err_t err;
if (ifindex > 0xff) {
return NULL;
}
err = netifapi_netif_index_to_name((u8_t)ifindex, ifname);
if (!err && ifname[0] != '\0') {
return ifname;
if (ifindex <= 0xff) {
err_t err = netifapi_netif_index_to_name((u8_t)ifindex, ifname);
if (!err && ifname[0] != '\0') {
return ifname;
}
}
#else /* LWIP_NETIF_API */
LWIP_UNUSED_ARG(ifindex);
LWIP_UNUSED_ARG(ifname);
#endif /* LWIP_NETIF_API */
set_errno(ENXIO);
return NULL;
}

8
src/api/sockets.c
View File

@ -293,14 +293,6 @@ static struct lwip_select_cb *select_cb_list;
and checked in event_callback to see if it has changed. */
static volatile int select_cb_ctr;
#if LWIP_SOCKET_SET_ERRNO
#ifndef set_errno
#define set_errno(err) do { if (err) { errno = (err); } } while(0)
#endif
#else /* LWIP_SOCKET_SET_ERRNO */
#define set_errno(err)
#endif /* LWIP_SOCKET_SET_ERRNO */
#define sock_set_errno(sk, e) do { \
const int sockerr = (e); \
sk->err = (u8_t)sockerr; \

8
src/include/lwip/priv/sockets_priv.h
View File

@ -48,6 +48,14 @@
extern "C" {
#endif
#if LWIP_SOCKET_SET_ERRNO
#ifndef set_errno
#define set_errno(err) do { if (err) { errno = (err); } } while(0)
#endif
#else /* LWIP_SOCKET_SET_ERRNO */
#define set_errno(err)
#endif /* LWIP_SOCKET_SET_ERRNO */
#if !LWIP_TCPIP_CORE_LOCKING
/** Maximum optlen used by setsockopt/getsockopt */
#define LWIP_SETGETSOCKOPT_MAXOPTLEN 16