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| author | ume <ume@FreeBSD.org> | 2002-11-28 17:46:40 +0000 |
|---|---|---|
| committer | ume <ume@FreeBSD.org> | 2002-11-28 17:46:40 +0000 |
| commit | cdeea51f465d7a6b284af099f17e8c09471975e5 (patch) | |
| tree | 49efe7fab65d31560f144efc5d9dc915a0e19a4f /lib/libc/net/if_nametoindex.c | |
| parent | a6ddd1313b01a2d725c73a504e092e360cc9354c (diff) | |
| download | FreeBSD-src-cdeea51f465d7a6b284af099f17e8c09471975e5.zip FreeBSD-src-cdeea51f465d7a6b284af099f17e8c09471975e5.tar.gz | |
try SIOCGIFINDEX 1st to be able to use network aliasing.
Submitted by: jlemon
Approved by: re
Diffstat (limited to 'lib/libc/net/if_nametoindex.c')
| -rw-r--r-- | lib/libc/net/if_nametoindex.c | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/lib/libc/net/if_nametoindex.c b/lib/libc/net/if_nametoindex.c index ca92ab7..f4748ca 100644 --- a/lib/libc/net/if_nametoindex.c +++ b/lib/libc/net/if_nametoindex.c @@ -30,6 +30,7 @@ __FBSDID("$FreeBSD$"); #include <sys/types.h> #include <sys/socket.h> +#include <sys/sockio.h> #include <net/if.h> #include <net/if_dl.h> #include <ifaddrs.h> @@ -59,9 +60,21 @@ __FBSDID("$FreeBSD$"); unsigned int if_nametoindex(const char *ifname) { + int s; + struct ifreq ifr; struct ifaddrs *ifaddrs, *ifa; unsigned int ni; + s = _socket(AF_INET, SOCK_DGRAM, 0); + if (s != -1) { + strlcpy(ifr.ifr_name, ifname, sizeof(ifr.ifr_name)); + if (_ioctl(s, SIOCGIFINDEX, &ifr) != -1) { + _close(s); + return (ifr.ifr_index); + } + _close(s); + } + if (getifaddrs(&ifaddrs) < 0) return(0); |
