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1 office 1 /*
2 * src/nl-cls-delete.c Delete Classifier
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) 2008 Thomas Graf <tgraf@suug.ch>
10 */
11  
12 #include "cls/utils.h"
13  
14 static int interactive = 0, default_yes = 0, quiet = 0;
15 static int deleted = 0;
16 static struct nl_sock *sock;
17  
18 static void print_usage(void)
19 {
20 printf(
21 "Usage: nl-cls-list [OPTION]... [CLASSIFIER]\n"
22 "\n"
23 "Options\n"
24 " -i, --interactive Run interactively\n"
25 " --yes Set default answer to yes\n"
26 " -q, --quiet Do not print informal notifications\n"
27 " -h, --help Show this help\n"
28 " -v, --version Show versioning information\n"
29 "\n"
30 "Classifier Options\n"
31 " -d, --dev=DEV Device the classifier should be assigned to.\n"
32 " -p, --parent=HANDLE Parent qdisc/class\n"
33 " --proto=PROTO Protocol\n"
34 " --prio=NUM Priority (0..256)\n"
35 " --id=HANDLE Unique identifier\n"
36 );
37 exit(0);
38 }
39  
40 static void delete_cb(struct nl_object *obj, void *arg)
41 {
42 struct rtnl_cls *cls = (struct rtnl_cls *) obj;
43 struct nl_dump_params params = {
44 .dp_type = NL_DUMP_LINE,
45 .dp_fd = stdout,
46 };
47 int err;
48  
49 if (interactive && !nlt_confirm(obj, &params, default_yes))
50 return;
51  
52 if ((err = rtnl_cls_delete(sock, cls, 0)) < 0)
53 fatal(err, "Unable to delete classifier: %s",
54 nl_geterror(err));
55  
56 if (!quiet) {
57 printf("Deleted ");
58 nl_object_dump(obj, &params);
59 }
60  
61 deleted++;
62 }
63  
64 int main(int argc, char *argv[])
65 {
66 struct nl_cache *link_cache, *cls_cache;
67 struct rtnl_cls *cls;
68 int nf = 0, err;
69  
70 sock = nlt_alloc_socket();
71 nlt_connect(sock, NETLINK_ROUTE);
72 link_cache = nlt_alloc_link_cache(sock);
73 cls = nlt_alloc_cls();
74  
75 for (;;) {
76 int c, optidx = 0;
77 enum {
78 ARG_PRIO = 257,
79 ARG_PROTO = 258,
80 ARG_ID,
81 ARG_YES,
82 };
83 static struct option long_opts[] = {
84 { "interactive", 0, 0, 'i' },
85 { "yes", 0, 0, ARG_YES },
86 { "quiet", 0, 0, 'q' },
87 { "help", 0, 0, 'h' },
88 { "version", 0, 0, 'v' },
89 { "dev", 1, 0, 'd' },
90 { "parent", 1, 0, 'p' },
91 { "proto", 1, 0, ARG_PROTO },
92 { "prio", 1, 0, ARG_PRIO },
93 { "id", 1, 0, ARG_ID },
94 { 0, 0, 0, 0 }
95 };
96  
97 c = getopt_long(argc, argv, "iqhvd:p:", long_opts, &optidx);
98 if (c == -1)
99 break;
100  
101 switch (c) {
102 case 'i': interactive = 1; break;
103 case ARG_YES: default_yes = 1; break;
104 case 'q': quiet = 1; break;
105 case 'h': print_usage(); break;
106 case 'v': nlt_print_version(); break;
107 case 'd': nf++; parse_dev(cls, link_cache, optarg); break;
108 case 'p': nf++; parse_parent(cls, optarg); break;
109 case ARG_PRIO: nf++; parse_prio(cls, optarg); break;
110 case ARG_ID: nf++; parse_handle(cls, optarg); break;
111 case ARG_PROTO: nf++; parse_proto(cls, optarg); break;
112 }
113 }
114  
115 if (nf == 0 && !interactive && !default_yes) {
116 fprintf(stderr, "You attempted to delete all classifiers in "
117 "non-interactive mode, aborting.\n");
118 exit(0);
119 }
120  
121 err = rtnl_cls_alloc_cache(sock, rtnl_cls_get_ifindex(cls),
122 rtnl_cls_get_parent(cls), &cls_cache);
123 if (err < 0)
124 fatal(err, "Unable to allocate classifier cache: %s",
125 nl_geterror(err));
126  
127 nl_cache_foreach_filter(cls_cache, OBJ_CAST(cls), delete_cb, NULL);
128  
129 if (!quiet)
130 printf("Deleted %d classifiers\n", deleted);
131  
132 return 0;
133 }