- size_t n;
- void *p = 0;
- int s = socket(AF_UNIX, SOCK_DGRAM, 0);
- if (s>=0) {
- for (n=0; (p=do_nameindex(s, n)) == (void *)-1; n++);
- __syscall(SYS_close, s);
+ struct ifnameindexctx _ctx, *ctx = &_ctx;
+ struct if_nameindex *ifs = 0, *d;
+ struct ifnamemap *s;
+ char *p;
+ int i;
+ int cs;
+
+ pthread_setcancelstate(PTHREAD_CANCEL_DISABLE, &cs);
+ memset(ctx, 0, sizeof(*ctx));
+ if (__rtnetlink_enumerate(AF_UNSPEC, AF_INET, netlink_msg_to_nameindex, ctx) < 0) goto err;
+
+ ifs = malloc(sizeof(struct if_nameindex[ctx->num+1]) + ctx->str_bytes);
+ if (!ifs) goto err;
+
+ p = (char*)(ifs + ctx->num + 1);
+ for (i = ctx->num, d = ifs, s = ctx->list; i; i--, s++, d++) {
+ d->if_index = s->index;
+ d->if_name = p;
+ memcpy(p, s->name, s->namelen);
+ p += s->namelen;
+ *p++ = 0;