2 * Copyright (c) 2017, Marie Helene Kvello-Aune
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6 * are permitted provided that the following conditions are met:
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9 * thislist of conditions and the following disclaimer.
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32 #include <sys/ioctl.h>
37 #include <libifconfig.h>
41 main(int argc, char *argv[])
43 char *parentif, *ifactualname;
44 unsigned short vlantag;
46 ifconfig_handle_t *lifh;
49 errx(EINVAL, "Invalid number of arguments."
50 " Should provide exactly two arguments: "
51 "PARENT_INTERFACE and VLAN_TAG.");
54 /* We have a static number of arguments. Therefore we can do it simple. */
55 parentif = strdup(argv[1]);
56 vlantag = strtonum(argv[2], 0, USHRT_MAX, &errstr);
59 errx(1, "VLAN_TAG must be between 0 and %i.\n", USHRT_MAX);
62 printf("Parent interface: %s\nVLAN tag: %i\n", parentif, vlantag);
64 lifh = ifconfig_open();
66 errx(ENOMEM, "Failed to open libifconfig handle.");
70 if (ifconfig_create_interface_vlan(lifh, "vlan", &ifactualname,
71 parentif, vlantag) == 0) {
72 printf("Successfully created interface '%s'\n", ifactualname);
80 switch (ifconfig_err_errtype(lifh)) {
82 warnx("couldn't create socket. This shouldn't happen.\n");
85 if (ifconfig_err_ioctlreq(lifh) == SIOCIFCREATE2) {
87 "Failed to create interface (SIOCIFCREATE2)\n");
92 "This is a thorough example accommodating for temporary"
93 " 'not implemented yet' errors. That's likely what happened"
94 " now. If not, your guess is as good as mine. ;)"
95 " Error code: %d\n", ifconfig_err_errno(
100 ifconfig_close(lifh);