2 * f_cgroup.c Control Group Classifier
4 * This program is free software; you can distribute it and/or
5 * modify it under the terms of the GNU General Public License
6 * as published by the Free Software Foundation; either version
7 * 2 of the License, or (at your option) any later version.
9 * Authors: Thomas Graf <tgraf@infradead.org>
19 static void explain(void)
21 fprintf(stderr, "Usage: ... cgroup [ match EMATCH_TREE ] [ police POLICE_SPEC ]\n");
22 fprintf(stderr, " [ action ACTION_SPEC ]\n");
25 static int cgroup_parse_opt(struct filter_util *qu, char *handle,
26 int argc, char **argv, struct nlmsghdr *n)
28 struct tcmsg *t = NLMSG_DATA(n);
33 h = strtol(handle, NULL, 0);
34 if (h == LONG_MIN || h == LONG_MAX) {
35 fprintf(stderr, "Illegal handle \"%s\", must be numeric.\n",
43 tail = (struct rtattr*)(((void*)n)+NLMSG_ALIGN(n->nlmsg_len));
44 addattr_l(n, MAX_MSG, TCA_OPTIONS, NULL, 0);
47 if (matches(*argv, "match") == 0) {
49 if (parse_ematch(&argc, &argv, TCA_CGROUP_EMATCHES, n)) {
50 fprintf(stderr, "Illegal \"ematch\"\n");
54 } else if (matches(*argv, "action") == 0) {
56 if (parse_action(&argc, &argv, TCA_CGROUP_ACT, n)) {
57 fprintf(stderr, "Illegal \"action\"\n");
62 } else if (matches(*argv, "police") == 0) {
64 if (parse_police(&argc, &argv, TCA_CGROUP_POLICE, n)) {
65 fprintf(stderr, "Illegal \"police\"\n");
69 } else if (strcmp(*argv, "help") == 0) {
73 fprintf(stderr, "What is \"%s\"?\n", *argv);
79 tail->rta_len = (((void*)n)+n->nlmsg_len) - (void*)tail;
83 static int cgroup_print_opt(struct filter_util *qu, FILE *f,
84 struct rtattr *opt, __u32 handle)
86 struct rtattr *tb[TCA_CGROUP_MAX+1];
91 parse_rtattr_nested(tb, TCA_CGROUP_MAX, opt);
94 fprintf(f, "handle 0x%x ", handle);
96 if (tb[TCA_CGROUP_EMATCHES])
97 print_ematch(f, tb[TCA_CGROUP_EMATCHES]);
99 if (tb[TCA_CGROUP_POLICE]) {
101 tc_print_police(f, tb[TCA_CGROUP_POLICE]);
104 if (tb[TCA_CGROUP_ACT])
105 tc_print_action(f, tb[TCA_CGROUP_ACT]);
110 struct filter_util cgroup_filter_util = {
112 .parse_fopt = cgroup_parse_opt,
113 .print_fopt = cgroup_print_opt,