svcadm(8)을 검색하려면 섹션에서 8 을 선택하고, 맨 페이지 이름에 svcadm을 입력하고 검색을 누른다.
if_nametoindex(3)
IF_NAMETOINDEX(3) Linux Programmer's Manual IF_NAMETOINDEX(3)
NAME
if_nametoindex, if_indextoname - mappings between network interface
names and indexes
SYNOPSIS
#include <net/if.h>
unsigned int if_nametoindex(const char *ifname);
char *if_indextoname(unsigned int ifindex, char *ifname);
DESCRIPTION
The if_nametoindex() function returns the index of the network inter‐
face corresponding to the name ifname.
The if_indextoname() function returns the name of the network interface
corresponding to the interface index ifindex. The name is placed in
the buffer pointed to by ifname. The buffer must allow for the storage
of at least IF_NAMESIZE bytes.
RETURN VALUE
On success, if_nametoindex() returns the index number of the network
interface; on error, 0 is returned and errno is set appropriately.
On success, if_indextoname() returns ifname; on error, NULL is returned
and errno is set appropriately.
ERRORS
if_nametoindex() may fail and set errno if:
ENODEV No interface found with given name.
if_indextoname() may fail and set errno if:
ENXIO No interface found for the index.
if_nametoindex() and if_indextoname() may also fail for any of the
errors specified for socket(2) or ioctl(2).
ATTRIBUTES
For an explanation of the terms used in this section, see
attributes(7).
allbox; lbw34 lb lb l l l. Interface Attribute Value T{ if_nametoin‐
dex(), if_indextoname() T} Thread safety MT-Safe
CONFORMING TO
POSIX.1-2001, POSIX.1-2008, RFC 3493.
This function first appeared in BSDi.
SEE ALSO
getifaddrs(3), if_nameindex(3), ifconfig(8)
COLOPHON
This page is part of release 5.02 of the Linux man-pages project. A
description of the project, information about reporting bugs, and the
latest version of this page, can be found at
https://www.kernel.org/doc/man-pages/.
GNU 2017-09-15 IF_NAMETOINDEX(3)