1 /*
2 * src/nl-qdisc-delete.c Delete Queuing Disciplines
3 *
4 * This library is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU Lesser General Public
6 * License as published by the Free Software Foundation version 2.1
7 * of the License.
8 *
9 * Copyright (c) 2003-2010 Thomas Graf <tgraf@suug.ch>
10 */
11
12 #include <netlink/cli/utils.h>
13 #include <netlink/cli/tc.h>
14 #include <netlink/cli/qdisc.h>
15 #include <netlink/cli/link.h>
16
17 static int quiet = 0, default_yes = 0, deleted = 0, interactive = 0;
18 static struct nl_sock *sock;
19
print_usage(void)20 static void print_usage(void)
21 {
22 printf(
23 "Usage: nl-qdisc-delete [OPTION]... [QDISC]\n"
24 "\n"
25 "OPTIONS\n"
26 " --interactive Run interactively.\n"
27 " --yes Set default answer to yes.\n"
28 " -q, --quiet Do not print informal notifications.\n"
29 " -h, --help Show this help text and exit.\n"
30 " -v, --version Show versioning information and exit.\n"
31 "\n"
32 " -d, --dev=DEV Device the qdisc is attached to.\n"
33 " -p, --parent=ID Identifier of parent qdisc/class.\n"
34 " -i, --id=ID Identifier\n"
35 " -k, --kind=NAME Kind of qdisc (e.g. pfifo_fast)\n"
36 );
37
38 exit(0);
39 }
40
delete_cb(struct nl_object * obj,void * arg)41 static void delete_cb(struct nl_object *obj, void *arg)
42 {
43 struct rtnl_qdisc *qdisc = nl_object_priv(obj);
44 struct nl_dump_params params = {
45 .dp_type = NL_DUMP_LINE,
46 .dp_fd = stdout,
47 };
48 int err;
49
50 /* Ignore default qdiscs, unable to delete */
51 if (rtnl_tc_get_handle((struct rtnl_tc *) qdisc) == 0)
52 return;
53
54 if (interactive && !nl_cli_confirm(obj, ¶ms, default_yes))
55 return;
56
57 if ((err = rtnl_qdisc_delete(sock, qdisc)) < 0)
58 nl_cli_fatal(err, "Unable to delete qdisc: %s\n", nl_geterror(err));
59
60 if (!quiet) {
61 printf("Deleted ");
62 nl_object_dump(obj, ¶ms);
63 }
64
65 deleted++;
66 }
67
main(int argc,char * argv[])68 int main(int argc, char *argv[])
69 {
70 struct rtnl_qdisc *qdisc;
71 struct rtnl_tc *tc;
72 struct nl_cache *link_cache, *qdisc_cache;
73 int nfilter = 0;
74
75 sock = nl_cli_alloc_socket();
76 nl_cli_connect(sock, NETLINK_ROUTE);
77 link_cache = nl_cli_link_alloc_cache(sock);
78 qdisc_cache = nl_cli_qdisc_alloc_cache(sock);
79 qdisc = nl_cli_qdisc_alloc();
80 tc = (struct rtnl_tc *) qdisc;
81
82 for (;;) {
83 int c, optidx = 0;
84 enum {
85 ARG_YES = 257,
86 ARG_INTERACTIVE = 258,
87 };
88 static struct option long_opts[] = {
89 { "interactive", 0, 0, ARG_INTERACTIVE },
90 { "yes", 0, 0, ARG_YES },
91 { "quiet", 0, 0, 'q' },
92 { "help", 0, 0, 'h' },
93 { "version", 0, 0, 'v' },
94 { "dev", 1, 0, 'd' },
95 { "parent", 1, 0, 'p' },
96 { "id", 1, 0, 'i' },
97 { "kind", 1, 0, 'k' },
98 { 0, 0, 0, 0 }
99 };
100
101 c = getopt_long(argc, argv, "qhvd:p:i:k:", long_opts, &optidx);
102 if (c == -1)
103 break;
104
105 switch (c) {
106 case '?': nl_cli_fatal(EINVAL, "Invalid options");
107 case ARG_INTERACTIVE: interactive = 1; break;
108 case ARG_YES: default_yes = 1; break;
109 case 'q': quiet = 1; break;
110 case 'h': print_usage(); break;
111 case 'v': nl_cli_print_version(); break;
112 case 'd':
113 nfilter++;
114 nl_cli_tc_parse_dev(tc, link_cache, optarg);
115 break;
116 case 'p':
117 nfilter++;
118 nl_cli_tc_parse_parent(tc, optarg);
119 break;
120 case 'i':
121 nfilter++;
122 nl_cli_tc_parse_handle(tc, optarg, 0);
123 break;
124 case 'k':
125 nfilter++;
126 nl_cli_tc_parse_kind(tc, optarg);
127 break;
128 }
129 }
130
131 if (nfilter == 0 && !interactive && !default_yes) {
132 nl_cli_fatal(EINVAL,
133 "You are attempting to delete all qdiscs on all devices.\n"
134 "If you want to proceed, run nl-qdisc-delete --yes.\n"
135 "Aborting...");
136 }
137
138 nl_cache_foreach_filter(qdisc_cache, OBJ_CAST(qdisc), delete_cb, NULL);
139
140 if (!quiet)
141 printf("Deleted %d qdiscs\n", deleted);
142
143 return 0;
144 }
145