libnl  3.6.0
nl-addr-delete.c
1 /* SPDX-License-Identifier: GPL-2.0-only */
2 /*
3  * Copyright (c) 2003-2009 Thomas Graf <tgraf@suug.ch>
4  */
5 
6 #include <netlink/cli/utils.h>
7 #include <netlink/cli/addr.h>
8 #include <netlink/cli/link.h>
9 
10 #include <linux/netlink.h>
11 
12 static struct nl_sock *sock;
13 static int interactive = 0, default_yes = 0, quiet = 0;
14 static int deleted = 0;
15 
16 static void print_usage(void)
17 {
18  printf(
19 "Usage: nl-addr-delete [OPTION]... [ADDRESS]\n"
20 "\n"
21 "Options\n"
22 " -i, --interactive Run interactively.\n"
23 " --yes Set default answer to yes.\n"
24 " -q, --quiet Do not print informal notifications.\n"
25 " -h, --help Show this help.\n"
26 " -v, --version Show versioning information.\n"
27 "\n"
28 "Address Options\n"
29 " -a, --local=ADDR Local address.\n"
30 " -d, --dev=DEV Associated network device.\n"
31 " --family=FAMILY Family of local address.\n"
32 " --label=STRING Address label (IPv4).\n"
33 " --peer=ADDR Peer address (IPv4).\n"
34 " --scope=SCOPE Address scope (IPv4).\n"
35 " --broadcast=ADDR Broadcast address of network (IPv4).\n"
36 " --valid-lifetime=TS Valid lifetime before route expires (IPv6).\n"
37 " --preferred=TIME Preferred lifetime (IPv6).\n"
38 " --valid=TIME Valid lifetime (IPv6).\n"
39  );
40 
41  exit(0);
42 }
43 
44 static void delete_cb(struct nl_object *obj, void *arg)
45 {
46  struct rtnl_addr *addr = nl_object_priv(obj);
47  struct nl_dump_params params = {
49  .dp_fd = stdout,
50  };
51  int err;
52 
53  if (interactive && !nl_cli_confirm(obj, &params, default_yes))
54  return;
55 
56  if ((err = rtnl_addr_delete(sock, addr, 0)) < 0)
57  nl_cli_fatal(err, "Unable to delete address: %s\n",
58  nl_geterror(err));
59 
60  if (!quiet) {
61  printf("Deleted ");
62  nl_object_dump(obj, &params);
63  }
64 
65  deleted++;
66 }
67 
68 int main(int argc, char *argv[])
69 {
70  struct rtnl_addr *addr;
71  struct nl_cache *link_cache, *addr_cache;
72 
73  sock = nl_cli_alloc_socket();
74  nl_cli_connect(sock, NETLINK_ROUTE);
75  link_cache = nl_cli_link_alloc_cache(sock);
76  addr_cache = nl_cli_addr_alloc_cache(sock);
77  addr = nl_cli_addr_alloc();
78 
79  for (;;) {
80  int c, optidx = 0;
81  enum {
82  ARG_FAMILY = 257,
83  ARG_LABEL = 258,
84  ARG_YES,
85  ARG_PEER,
86  ARG_SCOPE,
87  ARG_BROADCAST,
88  ARG_PREFERRED,
89  ARG_VALID,
90  };
91  static struct option long_opts[] = {
92  { "interactive", 0, 0, 'i' },
93  { "yes", 0, 0, ARG_YES },
94  { "quiet", 0, 0, 'q' },
95  { "help", 0, 0, 'h' },
96  { "version", 0, 0, 'v' },
97  { "local", 1, 0, 'a' },
98  { "dev", 1, 0, 'd' },
99  { "family", 1, 0, ARG_FAMILY },
100  { "label", 1, 0, ARG_LABEL },
101  { "peer", 1, 0, ARG_PEER },
102  { "scope", 1, 0, ARG_SCOPE },
103  { "broadcast", 1, 0, ARG_BROADCAST },
104  { "preferred", 1, 0, ARG_PREFERRED },
105  { "valid", 1, 0, ARG_VALID },
106  { 0, 0, 0, 0 }
107  };
108 
109  c = getopt_long(argc, argv, "iqhva:d:", long_opts, &optidx);
110  if (c == -1)
111  break;
112 
113  switch (c) {
114  case 'i': interactive = 1; break;
115  case ARG_YES: default_yes = 1; break;
116  case 'q': quiet = 1; break;
117  case 'h': print_usage(); break;
118  case 'v': nl_cli_print_version(); break;
119  case 'a': nl_cli_addr_parse_local(addr, optarg); break;
120  case 'd': nl_cli_addr_parse_dev(addr, link_cache, optarg); break;
121  case ARG_FAMILY: nl_cli_addr_parse_family(addr, optarg); break;
122  case ARG_LABEL: nl_cli_addr_parse_label(addr, optarg); break;
123  case ARG_PEER: nl_cli_addr_parse_peer(addr, optarg); break;
124  case ARG_SCOPE: nl_cli_addr_parse_scope(addr, optarg); break;
125  case ARG_BROADCAST: nl_cli_addr_parse_broadcast(addr, optarg); break;
126  case ARG_PREFERRED: nl_cli_addr_parse_preferred(addr, optarg); break;
127  case ARG_VALID: nl_cli_addr_parse_valid(addr, optarg); break;
128  }
129  }
130 
131  nl_cache_foreach_filter(addr_cache, OBJ_CAST(addr), delete_cb, NULL);
132 
133  if (!quiet)
134  printf("Deleted %d addresses\n", deleted);
135 
136  return 0;
137 }
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
void nl_cli_fatal(int err, const char *fmt,...)
Print error message and quit application.
Definition: utils.c:71
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
int rtnl_addr_delete(struct nl_sock *sk, struct rtnl_addr *addr, int flags)
Request deletion of an address.
Definition: addr.c:820
@ NL_DUMP_LINE
Dump object briefly on one line.
Definition: types.h:16
Dumping parameters.
Definition: types.h:28
enum nl_dump_type dp_type
Specifies the type of dump that is requested.
Definition: types.h:32