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5bec3484 JHS |
1 | /* |
2 | * tc_monitor.c "tc monitor". | |
3 | * | |
4 | * This program is free software; you can redistribute 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. | |
8 | * | |
9 | * Authors: Jamal Hadi Salim | |
10 | * | |
11 | */ | |
12 | ||
13 | #include <stdio.h> | |
14 | #include <stdlib.h> | |
15 | #include <unistd.h> | |
16 | #include <syslog.h> | |
17 | #include <fcntl.h> | |
18 | #include <sys/socket.h> | |
19 | #include <netinet/in.h> | |
20 | #include <arpa/inet.h> | |
21 | #include <string.h> | |
22 | #include <time.h> | |
23 | #include "rt_names.h" | |
24 | #include "utils.h" | |
25 | #include "tc_util.h" | |
26 | #include "tc_common.h" | |
27 | ||
28 | ||
29 | static void usage(void) __attribute__((noreturn)); | |
30 | ||
31 | static void usage(void) | |
32 | { | |
32a6fbe5 | 33 | fprintf(stderr, "Usage: tc [-timestamp [-tshort] monitor\n"); |
5bec3484 JHS |
34 | exit(-1); |
35 | } | |
36 | ||
37 | ||
d1f28cf1 | 38 | static int accept_tcmsg(const struct sockaddr_nl *who, |
0628cddd | 39 | struct rtnl_ctrl_data *ctrl, |
d1f28cf1 | 40 | struct nlmsghdr *n, void *arg) |
5bec3484 | 41 | { |
32a121cb | 42 | FILE *fp = (FILE *)arg; |
5bec3484 | 43 | |
32a6fbe5 ED |
44 | if (timestamp) |
45 | print_timestamp(fp); | |
46 | ||
5bec3484 JHS |
47 | if (n->nlmsg_type == RTM_NEWTFILTER || n->nlmsg_type == RTM_DELTFILTER) { |
48 | print_filter(who, n, arg); | |
49 | return 0; | |
50 | } | |
51 | if (n->nlmsg_type == RTM_NEWTCLASS || n->nlmsg_type == RTM_DELTCLASS) { | |
52 | print_class(who, n, arg); | |
53 | return 0; | |
54 | } | |
55 | if (n->nlmsg_type == RTM_NEWQDISC || n->nlmsg_type == RTM_DELQDISC) { | |
56 | print_qdisc(who, n, arg); | |
57 | return 0; | |
58 | } | |
59 | if (n->nlmsg_type == RTM_GETACTION || n->nlmsg_type == RTM_NEWACTION || | |
60 | n->nlmsg_type == RTM_DELACTION) { | |
61 | print_action(who, n, arg); | |
62 | return 0; | |
63 | } | |
64 | if (n->nlmsg_type != NLMSG_ERROR && n->nlmsg_type != NLMSG_NOOP && | |
65 | n->nlmsg_type != NLMSG_DONE) { | |
66 | fprintf(fp, "Unknown message: length %08d type %08x flags %08x\n", | |
67 | n->nlmsg_len, n->nlmsg_type, n->nlmsg_flags); | |
68 | } | |
69 | return 0; | |
70 | } | |
71 | ||
72 | int do_tcmonitor(int argc, char **argv) | |
73 | { | |
74 | struct rtnl_handle rth; | |
75 | char *file = NULL; | |
32a121cb | 76 | unsigned int groups = nl_mgrp(RTNLGRP_TC); |
5bec3484 JHS |
77 | |
78 | while (argc > 0) { | |
79 | if (matches(*argv, "file") == 0) { | |
80 | NEXT_ARG(); | |
81 | file = *argv; | |
82 | } else { | |
83 | if (matches(*argv, "help") == 0) { | |
84 | usage(); | |
85 | } else { | |
86 | fprintf(stderr, "Argument \"%s\" is unknown, try \"tc monitor help\".\n", *argv); | |
87 | exit(-1); | |
88 | } | |
89 | } | |
90 | argc--; argv++; | |
91 | } | |
92 | ||
93 | if (file) { | |
e49b51d6 SH |
94 | FILE *fp = fopen(file, "r"); |
95 | int ret; | |
96 | ||
5bec3484 JHS |
97 | if (fp == NULL) { |
98 | perror("Cannot fopen"); | |
99 | exit(-1); | |
100 | } | |
e49b51d6 SH |
101 | |
102 | ret = rtnl_from_file(fp, accept_tcmsg, stdout); | |
103 | fclose(fp); | |
104 | return ret; | |
5bec3484 JHS |
105 | } |
106 | ||
107 | if (rtnl_open(&rth, groups) < 0) | |
108 | exit(1); | |
109 | ||
110 | ll_init_map(&rth); | |
111 | ||
32a121cb | 112 | if (rtnl_listen(&rth, accept_tcmsg, (void *)stdout) < 0) { |
5bec3484 JHS |
113 | rtnl_close(&rth); |
114 | exit(2); | |
115 | } | |
116 | ||
117 | rtnl_close(&rth); | |
118 | exit(0); | |
119 | } |