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portability: fix virNetDevSetMAC and virNetDevExists on BSD

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- provide virNetDevSetMAC() implementation based on SIOCSIFLLADDR
  ioctl.
- adjust virNetDevExists() to check for ENXIO error because
  FreeBSD throws it when device doesn't exist

Signed-off-by: Eric Blake <eblake@redhat.com>
This commit is contained in:
Roman Bogorodskiy 2013-05-03 17:35:20 +04:00 committed by Eric Blake
parent bfe7721d50
commit 95934171fb
2 changed files with 48 additions and 1 deletions
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8
configure.ac
View File

@ -2371,6 +2371,14 @@ AC_CHECK_MEMBERS([struct ifreq.ifr_newname,
[#include <sys/socket.h>
#include <net/if.h>
])
# Check for BSD approach for setting MAC addr
AC_CHECK_DECLS([link_addr],
[], [],
[#include <sys/types.h>
#include <sys/socket.h>
#include <net/if_dl.h>
])
# Only COPYING.LIB is under version control, yet COPYING
# is included as part of the distribution tarball.

41
src/util/virnetdev.c
View File

@ -47,6 +47,11 @@
# undef HAVE_STRUCT_IFREQ
#endif
#if HAVE_DECL_LINK_ADDR
# include <sys/sockio.h>
# include <net/if_dl.h>
#endif
#define VIR_FROM_THIS VIR_FROM_NONE
#if defined(HAVE_STRUCT_IFREQ)
@ -110,7 +115,7 @@ int virNetDevExists(const char *ifname)
return -1;
if (ioctl(fd, SIOCGIFFLAGS, &ifr)) {
if (errno == ENODEV)
if (errno == ENODEV || errno == ENXIO)
ret = 0;
else
virReportSystemError(errno,
@ -179,6 +184,40 @@ cleanup:
VIR_FORCE_CLOSE(fd);
return ret;
}
#elif defined(SIOCSIFLLADDR) && defined(HAVE_STRUCT_IFREQ) && \
HAVE_DECL_LINK_ADDR
int virNetDevSetMAC(const char *ifname,
const virMacAddrPtr macaddr)
{
struct ifreq ifr;
struct sockaddr_dl sdl;
char mac[VIR_MAC_STRING_BUFLEN + 1] = ":";
int s;
int ret = -1;
if ((s = virNetDevSetupControl(ifname, &ifr)) < 0)
return -1;
virMacAddrFormat(macaddr, mac + 1);
sdl.sdl_len = sizeof(sdl);
link_addr(mac, &sdl);
memcpy(ifr.ifr_addr.sa_data, sdl.sdl_data, VIR_MAC_BUFLEN);
ifr.ifr_addr.sa_len = VIR_MAC_BUFLEN;
if (ioctl(s, SIOCSIFLLADDR, &ifr) < 0) {
virReportSystemError(errno,
_("Cannot set interface MAC on '%s'"),
ifname);
goto cleanup;
}
ret = 0;
cleanup:
VIR_FORCE_CLOSE(s);
return ret;
}
#else
int virNetDevSetMAC(const char *ifname,
const virMacAddrPtr macaddr ATTRIBUTE_UNUSED)