122 lines
2.3 KiB
C
122 lines
2.3 KiB
C
#include "common.h"
|
|
#include "ctl.h"
|
|
#include "str.h"
|
|
|
|
#include <stdio.h>
|
|
#include <sys/socket.h>
|
|
|
|
#include "../argz/argz.h"
|
|
|
|
static ssize_t
|
|
gt_reply(int fd, struct ctl_msg *res, struct ctl_msg *req)
|
|
{
|
|
if ((send(fd, req, sizeof(struct ctl_msg), 0) == -1) ||
|
|
(recv(fd, res, sizeof(struct ctl_msg), 0) == -1)) {
|
|
int err = errno;
|
|
ctl_delete(fd);
|
|
errno = err;
|
|
return -1;
|
|
}
|
|
|
|
if (res->type == CTL_REPLY) {
|
|
if (res->reply < 0) {
|
|
errno = res->reply;
|
|
return -1;
|
|
}
|
|
} else {
|
|
errno = EINTR;
|
|
return -1;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
gt_set_mtu(int fd, size_t mtu)
|
|
{
|
|
struct ctl_msg res, req = {
|
|
.type = CTL_MTU,
|
|
.mtu = mtu,
|
|
};
|
|
|
|
int ret = gt_reply(fd, &res, &req);
|
|
|
|
if (!ret)
|
|
printf("new mtu: %i\n", res.reply);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int
|
|
gt_set_timeout(int fd, unsigned long timeout)
|
|
{
|
|
struct ctl_msg res, req = {
|
|
.type = CTL_TIMEOUT,
|
|
.timeout = timeout,
|
|
};
|
|
|
|
return gt_reply(fd, &res, &req);
|
|
}
|
|
|
|
static int
|
|
gt_set_timetolerance(int fd, unsigned long timetolerance)
|
|
{
|
|
struct ctl_msg res, req = {
|
|
.type = CTL_TIMETOLERANCE,
|
|
.timetolerance = timetolerance,
|
|
};
|
|
|
|
return gt_reply(fd, &res, &req);
|
|
}
|
|
|
|
int
|
|
gt_set(int argc, char **argv)
|
|
{
|
|
const char *dev = "tun0";
|
|
unsigned long timetolerance = 0;
|
|
unsigned long timeout = 0;
|
|
size_t mtu = 0;
|
|
|
|
struct argz pathz[] = {
|
|
{"dev", "NAME", &dev, argz_str},
|
|
{"mtu", "BYTES", &mtu, argz_bytes},
|
|
{"timeout", "SECONDS", &timeout, argz_time},
|
|
{"timetolerance", "SECONDS", &timetolerance, argz_time},
|
|
{}};
|
|
|
|
if (argz(pathz, argc, argv))
|
|
return 1;
|
|
|
|
int fd = ctl_create("/run/" PACKAGE_NAME, NULL);
|
|
|
|
if (fd == -1) {
|
|
perror("ctl_create");
|
|
return 1;
|
|
}
|
|
|
|
if (ctl_connect(fd, "/run/" PACKAGE_NAME, dev) == -1) {
|
|
gt_log("couldn't connect to %s\n", dev);
|
|
ctl_delete(fd);
|
|
return 1;
|
|
}
|
|
|
|
if (mtu && gt_set_mtu(fd, mtu)) {
|
|
perror("mtu");
|
|
return 1;
|
|
}
|
|
|
|
if (timeout && gt_set_timeout(fd, timeout)) {
|
|
perror("timeout");
|
|
return 1;
|
|
}
|
|
|
|
if (timetolerance && gt_set_timetolerance(fd, timetolerance)) {
|
|
perror("timetolerance");
|
|
return 1;
|
|
}
|
|
|
|
ctl_delete(fd);
|
|
|
|
return 0;
|
|
}
|