Richard Alpe | f043759 | 2015-05-07 15:07:36 +0200 | [diff] [blame] | 1 | /* |
| 2 | * media.c TIPC link functionality. |
| 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: Richard Alpe <richard.alpe@ericsson.com> |
| 10 | */ |
| 11 | |
| 12 | #include <stdio.h> |
| 13 | #include <stdlib.h> |
| 14 | #include <string.h> |
| 15 | #include <errno.h> |
| 16 | |
| 17 | #include <linux/tipc_netlink.h> |
| 18 | #include <linux/tipc.h> |
| 19 | #include <linux/genetlink.h> |
| 20 | #include <libmnl/libmnl.h> |
| 21 | |
| 22 | #include "cmdl.h" |
| 23 | #include "msg.h" |
| 24 | #include "media.h" |
| 25 | |
| 26 | static int media_list_cb(const struct nlmsghdr *nlh, void *data) |
| 27 | { |
| 28 | struct genlmsghdr *genl = mnl_nlmsg_get_payload(nlh); |
| 29 | struct nlattr *info[TIPC_NLA_MAX + 1] = {}; |
| 30 | struct nlattr *attrs[TIPC_NLA_MEDIA_MAX + 1] = {}; |
| 31 | |
| 32 | mnl_attr_parse(nlh, sizeof(*genl), parse_attrs, info); |
| 33 | if (!info[TIPC_NLA_MEDIA]) |
| 34 | return MNL_CB_ERROR; |
| 35 | |
| 36 | mnl_attr_parse_nested(info[TIPC_NLA_MEDIA], parse_attrs, attrs); |
| 37 | if (!attrs[TIPC_NLA_MEDIA_NAME]) |
| 38 | return MNL_CB_ERROR; |
| 39 | |
| 40 | printf("%s\n", mnl_attr_get_str(attrs[TIPC_NLA_MEDIA_NAME])); |
| 41 | |
| 42 | return MNL_CB_OK; |
| 43 | } |
| 44 | |
| 45 | static int cmd_media_list(struct nlmsghdr *nlh, const struct cmd *cmd, |
| 46 | struct cmdl *cmdl, void *data) |
| 47 | { |
| 48 | char buf[MNL_SOCKET_BUFFER_SIZE]; |
| 49 | |
| 50 | if (help_flag) { |
| 51 | fprintf(stderr, "Usage: %s media list\n", cmdl->argv[0]); |
| 52 | return -EINVAL; |
| 53 | } |
| 54 | |
| 55 | if (!(nlh = msg_init(buf, TIPC_NL_MEDIA_GET))) { |
| 56 | fprintf(stderr, "error, message initialisation failed\n"); |
| 57 | return -1; |
| 58 | } |
| 59 | |
| 60 | return msg_dumpit(nlh, media_list_cb, NULL); |
| 61 | } |
| 62 | |
| 63 | static int media_get_cb(const struct nlmsghdr *nlh, void *data) |
| 64 | { |
| 65 | int *prop = data; |
| 66 | struct genlmsghdr *genl = mnl_nlmsg_get_payload(nlh); |
| 67 | struct nlattr *info[TIPC_NLA_MAX + 1] = {}; |
| 68 | struct nlattr *attrs[TIPC_NLA_MEDIA_MAX + 1] = {}; |
| 69 | struct nlattr *props[TIPC_NLA_PROP_MAX + 1] = {}; |
| 70 | |
| 71 | mnl_attr_parse(nlh, sizeof(*genl), parse_attrs, info); |
| 72 | if (!info[TIPC_NLA_MEDIA]) |
| 73 | return MNL_CB_ERROR; |
| 74 | |
| 75 | mnl_attr_parse_nested(info[TIPC_NLA_MEDIA], parse_attrs, attrs); |
| 76 | if (!attrs[TIPC_NLA_MEDIA_PROP]) |
| 77 | return MNL_CB_ERROR; |
| 78 | |
| 79 | mnl_attr_parse_nested(attrs[TIPC_NLA_MEDIA_PROP], parse_attrs, props); |
| 80 | if (!props[*prop]) |
| 81 | return MNL_CB_ERROR; |
| 82 | |
| 83 | printf("%u\n", mnl_attr_get_u32(props[*prop])); |
| 84 | |
| 85 | return MNL_CB_OK; |
| 86 | } |
| 87 | |
| 88 | static int cmd_media_get_prop(struct nlmsghdr *nlh, const struct cmd *cmd, |
| 89 | struct cmdl *cmdl, void *data) |
| 90 | { |
| 91 | int prop; |
| 92 | char buf[MNL_SOCKET_BUFFER_SIZE]; |
| 93 | struct nlattr *nest; |
| 94 | struct opt *opt; |
| 95 | struct opt opts[] = { |
| 96 | { "media", NULL }, |
| 97 | { NULL } |
| 98 | }; |
| 99 | |
| 100 | if (strcmp(cmd->cmd, "priority") == 0) |
| 101 | prop = TIPC_NLA_PROP_PRIO; |
| 102 | else if ((strcmp(cmd->cmd, "tolerance") == 0)) |
| 103 | prop = TIPC_NLA_PROP_TOL; |
| 104 | else if ((strcmp(cmd->cmd, "window") == 0)) |
| 105 | prop = TIPC_NLA_PROP_WIN; |
| 106 | else |
| 107 | return -EINVAL; |
| 108 | |
| 109 | if (help_flag) { |
| 110 | (cmd->help)(cmdl); |
| 111 | return -EINVAL; |
| 112 | } |
| 113 | |
| 114 | if (parse_opts(opts, cmdl) < 0) |
| 115 | return -EINVAL; |
| 116 | |
| 117 | if (!(nlh = msg_init(buf, TIPC_NL_MEDIA_GET))) { |
| 118 | fprintf(stderr, "error, message initialisation failed\n"); |
| 119 | return -1; |
| 120 | } |
| 121 | |
| 122 | if (!(opt = get_opt(opts, "media"))) { |
| 123 | fprintf(stderr, "error, missing media\n"); |
| 124 | return -EINVAL; |
| 125 | } |
| 126 | nest = mnl_attr_nest_start(nlh, TIPC_NLA_MEDIA); |
| 127 | mnl_attr_put_strz(nlh, TIPC_NLA_MEDIA_NAME, opt->val); |
| 128 | mnl_attr_nest_end(nlh, nest); |
| 129 | |
| 130 | return msg_doit(nlh, media_get_cb, &prop); |
| 131 | } |
| 132 | |
| 133 | static void cmd_media_get_help(struct cmdl *cmdl) |
| 134 | { |
| 135 | fprintf(stderr, "Usage: %s media get PPROPERTY media MEDIA\n\n" |
| 136 | "PROPERTIES\n" |
| 137 | " tolerance - Get media tolerance\n" |
| 138 | " priority - Get media priority\n" |
| 139 | " window - Get media window\n", |
| 140 | cmdl->argv[0]); |
| 141 | } |
| 142 | |
| 143 | static int cmd_media_get(struct nlmsghdr *nlh, const struct cmd *cmd, |
| 144 | struct cmdl *cmdl, void *data) |
| 145 | { |
| 146 | const struct cmd cmds[] = { |
| 147 | { "priority", cmd_media_get_prop, cmd_media_get_help }, |
| 148 | { "tolerance", cmd_media_get_prop, cmd_media_get_help }, |
| 149 | { "window", cmd_media_get_prop, cmd_media_get_help }, |
| 150 | { NULL } |
| 151 | }; |
| 152 | |
| 153 | return run_cmd(nlh, cmd, cmds, cmdl, NULL); |
| 154 | } |
| 155 | |
| 156 | static void cmd_media_set_help(struct cmdl *cmdl) |
| 157 | { |
| 158 | fprintf(stderr, "Usage: %s media set PPROPERTY media MEDIA\n\n" |
| 159 | "PROPERTIES\n" |
| 160 | " tolerance TOLERANCE - Set media tolerance\n" |
| 161 | " priority PRIORITY - Set media priority\n" |
| 162 | " window WINDOW - Set media window\n", |
| 163 | cmdl->argv[0]); |
| 164 | } |
| 165 | |
| 166 | static int cmd_media_set_prop(struct nlmsghdr *nlh, const struct cmd *cmd, |
| 167 | struct cmdl *cmdl, void *data) |
| 168 | { |
| 169 | int val; |
| 170 | int prop; |
| 171 | char buf[MNL_SOCKET_BUFFER_SIZE]; |
| 172 | struct nlattr *props; |
| 173 | struct nlattr *attrs; |
| 174 | struct opt *opt; |
| 175 | struct opt opts[] = { |
| 176 | { "media", NULL }, |
| 177 | { NULL } |
| 178 | }; |
| 179 | |
| 180 | if (strcmp(cmd->cmd, "priority") == 0) |
| 181 | prop = TIPC_NLA_PROP_PRIO; |
| 182 | else if ((strcmp(cmd->cmd, "tolerance") == 0)) |
| 183 | prop = TIPC_NLA_PROP_TOL; |
| 184 | else if ((strcmp(cmd->cmd, "window") == 0)) |
| 185 | prop = TIPC_NLA_PROP_WIN; |
| 186 | else |
| 187 | return -EINVAL; |
| 188 | |
| 189 | if (help_flag) { |
| 190 | (cmd->help)(cmdl); |
| 191 | return -EINVAL; |
| 192 | } |
| 193 | |
| 194 | if (cmdl->optind >= cmdl->argc) { |
| 195 | fprintf(stderr, "error, missing value\n"); |
| 196 | return -EINVAL; |
| 197 | } |
| 198 | val = atoi(shift_cmdl(cmdl)); |
| 199 | |
| 200 | if (parse_opts(opts, cmdl) < 0) |
| 201 | return -EINVAL; |
| 202 | |
| 203 | if (!(nlh = msg_init(buf, TIPC_NL_MEDIA_SET))) { |
| 204 | fprintf(stderr, "error, message initialisation failed\n"); |
| 205 | return -1; |
| 206 | } |
| 207 | attrs = mnl_attr_nest_start(nlh, TIPC_NLA_MEDIA); |
| 208 | |
| 209 | if (!(opt = get_opt(opts, "media"))) { |
| 210 | fprintf(stderr, "error, missing media\n"); |
| 211 | return -EINVAL; |
| 212 | } |
| 213 | mnl_attr_put_strz(nlh, TIPC_NLA_MEDIA_NAME, opt->val); |
| 214 | |
| 215 | props = mnl_attr_nest_start(nlh, TIPC_NLA_MEDIA_PROP); |
| 216 | mnl_attr_put_u32(nlh, prop, val); |
| 217 | mnl_attr_nest_end(nlh, props); |
| 218 | |
| 219 | mnl_attr_nest_end(nlh, attrs); |
| 220 | |
| 221 | return msg_doit(nlh, NULL, NULL); |
| 222 | } |
| 223 | |
| 224 | static int cmd_media_set(struct nlmsghdr *nlh, const struct cmd *cmd, |
| 225 | struct cmdl *cmdl, void *data) |
| 226 | { |
| 227 | const struct cmd cmds[] = { |
| 228 | { "priority", cmd_media_set_prop, cmd_media_set_help }, |
| 229 | { "tolerance", cmd_media_set_prop, cmd_media_set_help }, |
| 230 | { "window", cmd_media_set_prop, cmd_media_set_help }, |
| 231 | { NULL } |
| 232 | }; |
| 233 | |
| 234 | return run_cmd(nlh, cmd, cmds, cmdl, NULL); |
| 235 | } |
| 236 | |
| 237 | void cmd_media_help(struct cmdl *cmdl) |
| 238 | { |
| 239 | fprintf(stderr, |
| 240 | "Usage: %s media COMMAND [ARGS] ...\n" |
| 241 | "\n" |
| 242 | "Commands:\n" |
| 243 | " list - List active media types\n" |
| 244 | " get - Get various media properties\n" |
| 245 | " set - Set various media properties\n", |
| 246 | cmdl->argv[0]); |
| 247 | } |
| 248 | |
| 249 | int cmd_media(struct nlmsghdr *nlh, const struct cmd *cmd, struct cmdl *cmdl, |
| 250 | void *data) |
| 251 | { |
| 252 | const struct cmd cmds[] = { |
| 253 | { "get", cmd_media_get, cmd_media_get_help }, |
| 254 | { "list", cmd_media_list, NULL }, |
| 255 | { "set", cmd_media_set, cmd_media_set_help }, |
| 256 | { NULL } |
| 257 | }; |
| 258 | |
| 259 | return run_cmd(nlh, cmd, cmds, cmdl, NULL); |
| 260 | } |