libnl: /data/src/libnl3/src/nl-route-delete.c Source File

libnl 3.7.0

nl-route-delete.c
1 /* SPDX-License-Identifier: LGPL-2.1-only */
2 /*
3 * Copyright (c) 2003-2009 Thomas Graf <tgraf@suug.ch>
4 */
5
6 #include <netlink/cli/utils.h>
7 #include <netlink/cli/route.h>
8 #include <netlink/cli/link.h>
9
10 #include <linux/netlink.h>
11
12 static int interactive = 0, default_yes = 0, quiet = 0;
13 static int deleted = 0;
14 static struct nl_sock *sock;
15
16 static void print_version(void)
17 {
18 fprintf(stderr, "%s\n", LIBNL_STRING);
19 exit(0);
20 }
21
22 static void print_usage(void)
23 {
24 printf(
25 "Usage: nl-route-delete [OPTION]... [ROUTE]\n"
26 "\n"
27 "Options\n"
28 " -i, --interactive Run interactively\n"
29 " --yes Set default answer to yes\n"
30 " -q, --quiet Do not print informal notifications\n"
31 " -h, --help Show this help\n"
32 " -v, --version Show versioning information\n"
33 "\n"
34 "Route Options\n"
35 " -d, --dst=ADDR destination prefix, e.g. 10.10.0.0/16\n"
36 " -n, --nexthop=NH nexthop configuration:\n"
37 " dev=DEV route via device\n"
38 " weight=WEIGHT weight of nexthop\n"
39 " flags=FLAGS\n"
40 " via=GATEWAY route via other node\n"
41 " realms=REALMS\n"
42 " e.g. dev=eth0,via=192.168.1.12\n"
43 " -t, --table=TABLE Routing table\n"
44 " --family=FAMILY Address family\n"
45 " --src=ADDR Source prefix\n"
46 " --iif=DEV Incomming interface\n"
47 " --pref-src=ADDR Preferred source address\n"
48 " --metrics=OPTS Metrics configurations\n"
49 " --priority=NUM Priotity\n"
50 " --scope=SCOPE Scope\n"
51 " --protocol=PROTO Protocol\n"
52 " --type=TYPE { unicast | local | broadcast | multicast }\n"
53 );
54 exit(0);
55 }
56
57 static void delete_cb(struct nl_object *obj, void *arg)
58 {
59 struct rtnl_route *route = (struct rtnl_route *) obj;
60 struct nl_dump_params params = {
61 .dp_type = NL_DUMP_LINE,
62 .dp_fd = stdout,
63 };
64 int err;
65
66 if (interactive && !nl_cli_confirm(obj, &params, default_yes))
67 return;
68
69 if ((err = rtnl_route_delete(sock, route, 0)) < 0)
70 nl_cli_fatal(err, "Unable to delete route: %s", nl_geterror(err));
71
72 if (!quiet) {
73 printf("Deleted ");
74 nl_object_dump(obj, &params);
75 }
76
77 deleted++;
78 }
79
80 int main(int argc, char *argv[])
81 {
82 struct nl_cache *link_cache, *route_cache;
83 struct rtnl_route *route;
84 int nf = 0;
85
86 sock = nl_cli_alloc_socket();
87 nl_cli_connect(sock, NETLINK_ROUTE);
88 link_cache = nl_cli_link_alloc_cache(sock);
89 route_cache = nl_cli_route_alloc_cache(sock, 0);
90 route = nl_cli_route_alloc();
91
92 for (;;) {
93 int c, optidx = 0;
94 enum {
95 ARG_FAMILY = 257,
96 ARG_SRC = 258,
97 ARG_IIF,
98 ARG_PREF_SRC,
99 ARG_METRICS,
100 ARG_PRIORITY,
101 ARG_SCOPE,
102 ARG_PROTOCOL,
103 ARG_TYPE,
104 ARG_YES,
105 };
106 static struct option long_opts[] = {
107 { "interactive", 0, 0, 'i' },
108 { "yes", 0, 0, ARG_YES },
109 { "quiet", 0, 0, 'q' },
110 { "help", 0, 0, 'h' },
111 { "version", 0, 0, 'v' },
112 { "dst", 1, 0, 'd' },
113 { "nexthop", 1, 0, 'n' },
114 { "table", 1, 0, 't' },
115 { "family", 1, 0, ARG_FAMILY },
116 { "src", 1, 0, ARG_SRC },
117 { "iif", 1, 0, ARG_IIF },
118 { "pref-src", 1, 0, ARG_PREF_SRC },
119 { "metrics", 1, 0, ARG_METRICS },
120 { "priority", 1, 0, ARG_PRIORITY },
121 { "scope", 1, 0, ARG_SCOPE },
122 { "protocol", 1, 0, ARG_PROTOCOL },
123 { "type", 1, 0, ARG_TYPE },
124 { 0, 0, 0, 0 }
125 };
126
127 c = getopt_long(argc, argv, "iqhvd:n:t:", long_opts, &optidx);
128 if (c == -1)
129 break;
130
131 switch (c) {
132 case 'i': interactive = 1; break;
133 case ARG_YES: default_yes = 1; break;
134 case 'q': quiet = 1; break;
135 case 'h': print_usage(); break;
136 case 'v': print_version(); break;
137 case 'd': nf++; nl_cli_route_parse_dst(route, optarg); break;
138 case 'n': nf++; nl_cli_route_parse_nexthop(route, optarg, link_cache); break;
139 case 't': nf++; nl_cli_route_parse_table(route, optarg); break;
140 case ARG_FAMILY: nf++; nl_cli_route_parse_family(route, optarg); break;
141 case ARG_SRC: nf++; nl_cli_route_parse_src(route, optarg); break;
142 case ARG_IIF: nf++; nl_cli_route_parse_iif(route, optarg, link_cache); break;
143 case ARG_PREF_SRC: nf++; nl_cli_route_parse_pref_src(route, optarg); break;
144 case ARG_METRICS: nf++; nl_cli_route_parse_metric(route, optarg); break;
145 case ARG_PRIORITY: nf++; nl_cli_route_parse_prio(route, optarg); break;
146 case ARG_SCOPE: nf++; nl_cli_route_parse_scope(route, optarg); break;
147 case ARG_PROTOCOL: nf++; nl_cli_route_parse_protocol(route, optarg); break;
148 case ARG_TYPE: nf++; nl_cli_route_parse_type(route, optarg); break;
149 }
150 }
151
152 if (nf == 0 && !interactive && !default_yes) {
153 fprintf(stderr, "You attempted to delete all routes in "
154 "non-interactive mode, aborting.\n");
155 exit(0);
156 }
157
158 nl_cache_foreach_filter(route_cache, OBJ_CAST(route), delete_cb, NULL);
159
160 if (!quiet)
161 printf("Deleted %d routes\n", deleted);
162
163 return 0;
164 }
nl_cache_foreach_filter
void nl_cache_foreach_filter(struct nl_cache *cache, struct nl_object *filter, void(*cb)(struct nl_object *, void *), void *arg)
Call a callback on each element of the cache (filtered).
Definition: cache.c:1294
nl_cli_fatal
void nl_cli_fatal(int err, const char *fmt,...)
Print error message and quit application.
Definition: utils.c:71
nl_object_dump
void nl_object_dump(struct nl_object *obj, struct nl_dump_params *params)
Dump this object according to the specified parameters.
Definition: object.c:287
NL_DUMP_LINE
@ NL_DUMP_LINE
Dump object briefly on one line.
Definition: types.h:16
nl_dump_params
Dumping parameters.
Definition: types.h:28
nl_dump_params::dp_type
enum nl_dump_type dp_type
Specifies the type of dump that is requested.
Definition: types.h:32