Last change
on this file since 413 was 398, checked in by coas-nagasima, 5 years ago |
mbedTLS版Azure IoT Hub接続サンプルのソースコードを追加
|
-
Property svn:eol-style
set to
native
-
Property svn:mime-type
set to
text/x-csrc;charset=UTF-8
|
File size:
429 bytes
|
Rev | Line | |
---|
[398] | 1 | #define _GNU_SOURCE
|
---|
| 2 | #include <net/if.h>
|
---|
| 3 | #include <sys/socket.h>
|
---|
| 4 | #include <sys/ioctl.h>
|
---|
| 5 | #include <string.h>
|
---|
| 6 | #include "syscall.h"
|
---|
| 7 |
|
---|
| 8 | unsigned if_nametoindex(const char *name)
|
---|
| 9 | {
|
---|
| 10 | struct ifreq ifr;
|
---|
| 11 | int fd, r;
|
---|
| 12 |
|
---|
| 13 | if ((fd = socket(AF_UNIX, SOCK_DGRAM|SOCK_CLOEXEC, 0)) < 0) return 0;
|
---|
| 14 | strncpy(ifr.ifr_name, name, sizeof ifr.ifr_name);
|
---|
| 15 | r = ioctl(fd, SIOCGIFINDEX, &ifr);
|
---|
| 16 | __syscall(SYS_close, fd);
|
---|
| 17 | return r < 0 ? 0 : ifr.ifr_ifindex;
|
---|
| 18 | }
|
---|
Note:
See
TracBrowser
for help on using the repository browser.