115 lines
2.6 KiB
C
115 lines
2.6 KiB
C
/*
|
|
* f_cgroup.c Control Group Classifier
|
|
*
|
|
* This program is free software; you can distribute it and/or
|
|
* modify it under the terms of the GNU General Public License
|
|
* as published by the Free Software Foundation; either version
|
|
* 2 of the License, or (at your option) any later version.
|
|
*
|
|
* Authors: Thomas Graf <tgraf@infradead.org>
|
|
*
|
|
*/
|
|
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include "utils.h"
|
|
#include "tc_util.h"
|
|
#include "m_ematch.h"
|
|
|
|
static void explain(void)
|
|
{
|
|
fprintf(stderr, "Usage: ... cgroup [ match EMATCH_TREE ]\n");
|
|
fprintf(stderr, " [ action ACTION_SPEC ]\n");
|
|
}
|
|
|
|
static int cgroup_parse_opt(struct filter_util *qu, char *handle,
|
|
int argc, char **argv, struct nlmsghdr *n)
|
|
{
|
|
struct tcmsg *t = NLMSG_DATA(n);
|
|
struct rtattr *tail;
|
|
long h = 0;
|
|
|
|
if (handle) {
|
|
h = strtol(handle, NULL, 0);
|
|
if (h == LONG_MIN || h == LONG_MAX) {
|
|
fprintf(stderr, "Illegal handle \"%s\", must be numeric.\n",
|
|
handle);
|
|
return -1;
|
|
}
|
|
}
|
|
|
|
t->tcm_handle = h;
|
|
|
|
tail = (struct rtattr *)(((void *)n)+NLMSG_ALIGN(n->nlmsg_len));
|
|
addattr_l(n, MAX_MSG, TCA_OPTIONS, NULL, 0);
|
|
|
|
while (argc > 0) {
|
|
if (matches(*argv, "match") == 0) {
|
|
NEXT_ARG();
|
|
if (parse_ematch(&argc, &argv, TCA_CGROUP_EMATCHES, n)) {
|
|
fprintf(stderr, "Illegal \"ematch\"\n");
|
|
return -1;
|
|
}
|
|
continue;
|
|
} else if (matches(*argv, "action") == 0) {
|
|
NEXT_ARG();
|
|
if (parse_action(&argc, &argv, TCA_CGROUP_ACT, n)) {
|
|
fprintf(stderr, "Illegal \"action\"\n");
|
|
return -1;
|
|
}
|
|
continue;
|
|
|
|
} else if (matches(*argv, "police") == 0) {
|
|
NEXT_ARG();
|
|
if (parse_police(&argc, &argv, TCA_CGROUP_POLICE, n)) {
|
|
fprintf(stderr, "Illegal \"police\"\n");
|
|
return -1;
|
|
}
|
|
continue;
|
|
} else if (strcmp(*argv, "help") == 0) {
|
|
explain();
|
|
return -1;
|
|
} else {
|
|
fprintf(stderr, "What is \"%s\"?\n", *argv);
|
|
explain();
|
|
return -1;
|
|
}
|
|
}
|
|
|
|
tail->rta_len = (((void *)n)+n->nlmsg_len) - (void *)tail;
|
|
return 0;
|
|
}
|
|
|
|
static int cgroup_print_opt(struct filter_util *qu, FILE *f,
|
|
struct rtattr *opt, __u32 handle)
|
|
{
|
|
struct rtattr *tb[TCA_CGROUP_MAX+1];
|
|
|
|
if (opt == NULL)
|
|
return 0;
|
|
|
|
parse_rtattr_nested(tb, TCA_CGROUP_MAX, opt);
|
|
|
|
if (handle)
|
|
fprintf(f, "handle 0x%x ", handle);
|
|
|
|
if (tb[TCA_CGROUP_EMATCHES])
|
|
print_ematch(f, tb[TCA_CGROUP_EMATCHES]);
|
|
|
|
if (tb[TCA_CGROUP_POLICE]) {
|
|
fprintf(f, "\n");
|
|
tc_print_police(f, tb[TCA_CGROUP_POLICE]);
|
|
}
|
|
|
|
if (tb[TCA_CGROUP_ACT])
|
|
tc_print_action(f, tb[TCA_CGROUP_ACT], 0);
|
|
|
|
return 0;
|
|
}
|
|
|
|
struct filter_util cgroup_filter_util = {
|
|
.id = "cgroup",
|
|
.parse_fopt = cgroup_parse_opt,
|
|
.print_fopt = cgroup_print_opt,
|
|
};
|