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| author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-17 13:54:38 +0000 |
|---|---|---|
| committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-17 13:54:38 +0000 |
| commit | 8c1ab65c0f548d20b7f177bdb736daaf603340e1 (patch) | |
| tree | df55b7e75bf43f2bf500845b105afe3ac3a5157e /libc-top-half/musl/src/network/if_nametoindex.c | |
| parent | Initial commit. (diff) | |
| download | wasi-libc-8c1ab65c0f548d20b7f177bdb736daaf603340e1.tar.xz wasi-libc-8c1ab65c0f548d20b7f177bdb736daaf603340e1.zip | |
Adding upstream version 0.0~git20221206.8b7148f.upstream/0.0_git20221206.8b7148f
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'libc-top-half/musl/src/network/if_nametoindex.c')
| -rw-r--r-- | libc-top-half/musl/src/network/if_nametoindex.c | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/libc-top-half/musl/src/network/if_nametoindex.c b/libc-top-half/musl/src/network/if_nametoindex.c new file mode 100644 index 0000000..331413c --- /dev/null +++ b/libc-top-half/musl/src/network/if_nametoindex.c @@ -0,0 +1,18 @@ +#define _GNU_SOURCE +#include <net/if.h> +#include <sys/socket.h> +#include <sys/ioctl.h> +#include <string.h> +#include "syscall.h" + +unsigned if_nametoindex(const char *name) +{ + struct ifreq ifr; + int fd, r; + + if ((fd = socket(AF_UNIX, SOCK_DGRAM|SOCK_CLOEXEC, 0)) < 0) return 0; + strncpy(ifr.ifr_name, name, sizeof ifr.ifr_name); + r = ioctl(fd, SIOCGIFINDEX, &ifr); + __syscall(SYS_close, fd); + return r < 0 ? 0 : ifr.ifr_ifindex; +} |