Lines Matching +full:c +full:- +full:family +full:- +full:name
1 // SPDX-License-Identifier: GPL-2.0
3 * NETLINK Generic Netlink Family
71 * Bit 1 is marked as already used since the drop-monitor code
76 * and the code no longer marks pre-reserved IDs as used.
78 * also abused this API and relied on family == group ID, we
79 * cater to that by giving it a static family and group ID.
89 static int genl_ctrl_event(int event, const struct genl_family *family,
98 static const struct genl_family *genl_family_find_byname(char *name) in genl_family_find_byname() argument
100 const struct genl_family *family; in genl_family_find_byname() local
103 idr_for_each_entry(&genl_fam_idr, family, id) in genl_family_find_byname()
104 if (strcmp(family->name, name) == 0) in genl_family_find_byname()
105 return family; in genl_family_find_byname()
110 static int genl_get_cmd_cnt(const struct genl_family *family) in genl_get_cmd_cnt() argument
112 return family->n_ops + family->n_small_ops; in genl_get_cmd_cnt()
115 static void genl_op_from_full(const struct genl_family *family, in genl_op_from_full() argument
118 *op = family->ops[i]; in genl_op_from_full()
120 if (!op->maxattr) in genl_op_from_full()
121 op->maxattr = family->maxattr; in genl_op_from_full()
122 if (!op->policy) in genl_op_from_full()
123 op->policy = family->policy; in genl_op_from_full()
126 static int genl_get_cmd_full(u32 cmd, const struct genl_family *family, in genl_get_cmd_full() argument
131 for (i = 0; i < family->n_ops; i++) in genl_get_cmd_full()
132 if (family->ops[i].cmd == cmd) { in genl_get_cmd_full()
133 genl_op_from_full(family, i, op); in genl_get_cmd_full()
137 return -ENOENT; in genl_get_cmd_full()
140 static void genl_op_from_small(const struct genl_family *family, in genl_op_from_small() argument
144 op->doit = family->small_ops[i].doit; in genl_op_from_small()
145 op->dumpit = family->small_ops[i].dumpit; in genl_op_from_small()
146 op->cmd = family->small_ops[i].cmd; in genl_op_from_small()
147 op->internal_flags = family->small_ops[i].internal_flags; in genl_op_from_small()
148 op->flags = family->small_ops[i].flags; in genl_op_from_small()
149 op->validate = family->small_ops[i].validate; in genl_op_from_small()
151 op->maxattr = family->maxattr; in genl_op_from_small()
152 op->policy = family->policy; in genl_op_from_small()
155 static int genl_get_cmd_small(u32 cmd, const struct genl_family *family, in genl_get_cmd_small() argument
160 for (i = 0; i < family->n_small_ops; i++) in genl_get_cmd_small()
161 if (family->small_ops[i].cmd == cmd) { in genl_get_cmd_small()
162 genl_op_from_small(family, i, op); in genl_get_cmd_small()
166 return -ENOENT; in genl_get_cmd_small()
169 static int genl_get_cmd(u32 cmd, const struct genl_family *family, in genl_get_cmd() argument
172 if (!genl_get_cmd_full(cmd, family, op)) in genl_get_cmd()
174 return genl_get_cmd_small(cmd, family, op); in genl_get_cmd()
178 const struct genl_family *family, in genl_get_cmd_by_index() argument
181 if (i < family->n_ops) in genl_get_cmd_by_index()
182 genl_op_from_full(family, i, op); in genl_get_cmd_by_index()
183 else if (i < family->n_ops + family->n_small_ops) in genl_get_cmd_by_index()
184 genl_op_from_small(family, i - family->n_ops, op); in genl_get_cmd_by_index()
227 return -ENOMEM; in genl_allocate_reserve_groups()
234 return -ENOMEM; in genl_allocate_reserve_groups()
251 static int genl_validate_assign_mc_groups(struct genl_family *family) in genl_validate_assign_mc_groups() argument
254 int n_groups = family->n_mcgrps; in genl_validate_assign_mc_groups()
262 const struct genl_multicast_group *grp = &family->mcgrps[i]; in genl_validate_assign_mc_groups()
264 if (WARN_ON(grp->name[0] == '\0')) in genl_validate_assign_mc_groups()
265 return -EINVAL; in genl_validate_assign_mc_groups()
266 if (WARN_ON(memchr(grp->name, '\0', GENL_NAMSIZ) == NULL)) in genl_validate_assign_mc_groups()
267 return -EINVAL; in genl_validate_assign_mc_groups()
270 /* special-case our own group and hacks */ in genl_validate_assign_mc_groups()
271 if (family == &genl_ctrl) { in genl_validate_assign_mc_groups()
274 } else if (strcmp(family->name, "NET_DM") == 0) { in genl_validate_assign_mc_groups()
277 } else if (family->id == GENL_ID_VFS_DQUOT) { in genl_validate_assign_mc_groups()
280 } else if (family->id == GENL_ID_PMCRAID) { in genl_validate_assign_mc_groups()
290 family->mcgrp_offset = first_id; in genl_validate_assign_mc_groups()
296 if (family->netnsok) { in genl_validate_assign_mc_groups()
302 err = __netlink_change_ngroups(net->genl_sock, in genl_validate_assign_mc_groups()
322 for (i = 0; i < family->n_mcgrps; i++) in genl_validate_assign_mc_groups()
323 clear_bit(family->mcgrp_offset + i, mc_groups); in genl_validate_assign_mc_groups()
329 static void genl_unregister_mc_groups(const struct genl_family *family) in genl_unregister_mc_groups() argument
337 for (i = 0; i < family->n_mcgrps; i++) in genl_unregister_mc_groups()
339 net->genl_sock, family->mcgrp_offset + i); in genl_unregister_mc_groups()
344 for (i = 0; i < family->n_mcgrps; i++) { in genl_unregister_mc_groups()
345 int grp_id = family->mcgrp_offset + i; in genl_unregister_mc_groups()
349 genl_ctrl_event(CTRL_CMD_DELMCAST_GRP, family, in genl_unregister_mc_groups()
350 &family->mcgrps[i], grp_id); in genl_unregister_mc_groups()
354 static int genl_validate_ops(const struct genl_family *family) in genl_validate_ops() argument
358 if (WARN_ON(family->n_ops && !family->ops) || in genl_validate_ops()
359 WARN_ON(family->n_small_ops && !family->small_ops)) in genl_validate_ops()
360 return -EINVAL; in genl_validate_ops()
362 for (i = 0; i < genl_get_cmd_cnt(family); i++) { in genl_validate_ops()
365 genl_get_cmd_by_index(i, family, &op); in genl_validate_ops()
367 return -EINVAL; in genl_validate_ops()
368 for (j = i + 1; j < genl_get_cmd_cnt(family); j++) { in genl_validate_ops()
371 genl_get_cmd_by_index(j, family, &op2); in genl_validate_ops()
373 return -EINVAL; in genl_validate_ops()
381 * genl_register_family - register a generic netlink family
382 * @family: generic netlink family
384 * Registers the specified family after validating it first. Only one
385 * family may be registered with the same family name or identifier.
387 * The family's ops, multicast groups and module pointer must already
392 int genl_register_family(struct genl_family *family) in genl_register_family() argument
397 err = genl_validate_ops(family); in genl_register_family()
403 if (genl_family_find_byname(family->name)) { in genl_register_family()
404 err = -EEXIST; in genl_register_family()
409 * Sadly, a few cases need to be special-cased in genl_register_family()
411 * and having used their family ID also as their in genl_register_family()
415 if (family == &genl_ctrl) { in genl_register_family()
416 /* and this needs to be special for initial family lookups */ in genl_register_family()
418 } else if (strcmp(family->name, "pmcraid") == 0) { in genl_register_family()
420 } else if (strcmp(family->name, "VFS_DQUOT") == 0) { in genl_register_family()
424 family->id = idr_alloc_cyclic(&genl_fam_idr, family, in genl_register_family()
426 if (family->id < 0) { in genl_register_family()
427 err = family->id; in genl_register_family()
431 err = genl_validate_assign_mc_groups(family); in genl_register_family()
438 genl_ctrl_event(CTRL_CMD_NEWFAMILY, family, NULL, 0); in genl_register_family()
439 for (i = 0; i < family->n_mcgrps; i++) in genl_register_family()
440 genl_ctrl_event(CTRL_CMD_NEWMCAST_GRP, family, in genl_register_family()
441 &family->mcgrps[i], family->mcgrp_offset + i); in genl_register_family()
446 idr_remove(&genl_fam_idr, family->id); in genl_register_family()
454 * genl_unregister_family - unregister generic netlink family
455 * @family: generic netlink family
457 * Unregisters the specified family.
461 int genl_unregister_family(const struct genl_family *family) in genl_unregister_family() argument
465 if (!genl_family_find_byid(family->id)) { in genl_unregister_family()
467 return -ENOENT; in genl_unregister_family()
470 genl_unregister_mc_groups(family); in genl_unregister_family()
472 idr_remove(&genl_fam_idr, family->id); in genl_unregister_family()
479 genl_ctrl_event(CTRL_CMD_DELFAMILY, family, NULL, 0); in genl_unregister_family()
486 * genlmsg_put - Add generic netlink header to netlink message
490 * @family: generic netlink family
497 const struct genl_family *family, int flags, u8 cmd) in genlmsg_put() argument
502 nlh = nlmsg_put(skb, portid, seq, family->id, GENL_HDRLEN + in genlmsg_put()
503 family->hdrsize, flags); in genlmsg_put()
508 hdr->cmd = cmd; in genlmsg_put()
509 hdr->version = family->version; in genlmsg_put()
510 hdr->reserved = 0; in genlmsg_put()
527 genl_family_rcv_msg_attrs_parse(const struct genl_family *family, in genl_family_rcv_msg_attrs_parse() argument
534 enum netlink_validation validate = ops->validate & no_strict_flag ? in genl_family_rcv_msg_attrs_parse()
540 if (!ops->maxattr) in genl_family_rcv_msg_attrs_parse()
543 attrbuf = kmalloc_array(ops->maxattr + 1, in genl_family_rcv_msg_attrs_parse()
546 return ERR_PTR(-ENOMEM); in genl_family_rcv_msg_attrs_parse()
548 err = __nlmsg_parse(nlh, hdrlen, attrbuf, ops->maxattr, ops->policy, in genl_family_rcv_msg_attrs_parse()
563 const struct genl_family *family; member
572 struct genl_start_context *ctx = cb->data; in genl_start()
573 const struct genl_ops *ops = ctx->ops; in genl_start()
578 if (ops->validate & GENL_DONT_VALIDATE_DUMP) in genl_start()
581 if (ctx->nlh->nlmsg_len < nlmsg_msg_size(ctx->hdrlen)) in genl_start()
582 return -EINVAL; in genl_start()
584 attrs = genl_family_rcv_msg_attrs_parse(ctx->family, ctx->nlh, ctx->extack, in genl_start()
585 ops, ctx->hdrlen, in genl_start()
594 return -ENOMEM; in genl_start()
596 info->family = ctx->family; in genl_start()
597 info->op = *ops; in genl_start()
598 info->attrs = attrs; in genl_start()
600 cb->data = info; in genl_start()
601 if (ops->start) { in genl_start()
602 if (!ctx->family->parallel_ops) in genl_start()
604 rc = ops->start(cb); in genl_start()
605 if (!ctx->family->parallel_ops) in genl_start()
610 genl_family_rcv_msg_attrs_free(info->attrs); in genl_start()
612 cb->data = NULL; in genl_start()
619 const struct genl_ops *ops = &genl_dumpit_info(cb)->op; in genl_lock_dumpit()
623 rc = ops->dumpit(skb, cb); in genl_lock_dumpit()
631 const struct genl_ops *ops = &info->op; in genl_lock_done()
634 if (ops->done) { in genl_lock_done()
636 rc = ops->done(cb); in genl_lock_done()
639 genl_family_rcv_msg_attrs_free(info->attrs); in genl_lock_done()
647 const struct genl_ops *ops = &info->op; in genl_parallel_done()
650 if (ops->done) in genl_parallel_done()
651 rc = ops->done(cb); in genl_parallel_done()
652 genl_family_rcv_msg_attrs_free(info->attrs); in genl_parallel_done()
657 static int genl_family_rcv_msg_dumpit(const struct genl_family *family, in genl_family_rcv_msg_dumpit() argument
667 if (!ops->dumpit) in genl_family_rcv_msg_dumpit()
668 return -EOPNOTSUPP; in genl_family_rcv_msg_dumpit()
670 ctx.family = family; in genl_family_rcv_msg_dumpit()
676 if (!family->parallel_ops) { in genl_family_rcv_msg_dumpit()
677 struct netlink_dump_control c = { in genl_family_rcv_msg_dumpit() local
678 .module = family->module, in genl_family_rcv_msg_dumpit()
686 err = __netlink_dump_start(net->genl_sock, skb, nlh, &c); in genl_family_rcv_msg_dumpit()
689 struct netlink_dump_control c = { in genl_family_rcv_msg_dumpit() local
690 .module = family->module, in genl_family_rcv_msg_dumpit()
693 .dump = ops->dumpit, in genl_family_rcv_msg_dumpit()
697 err = __netlink_dump_start(net->genl_sock, skb, nlh, &c); in genl_family_rcv_msg_dumpit()
703 static int genl_family_rcv_msg_doit(const struct genl_family *family, in genl_family_rcv_msg_doit() argument
714 if (!ops->doit) in genl_family_rcv_msg_doit()
715 return -EOPNOTSUPP; in genl_family_rcv_msg_doit()
717 attrbuf = genl_family_rcv_msg_attrs_parse(family, nlh, extack, in genl_family_rcv_msg_doit()
723 info.snd_seq = nlh->nlmsg_seq; in genl_family_rcv_msg_doit()
733 if (family->pre_doit) { in genl_family_rcv_msg_doit()
734 err = family->pre_doit(ops, skb, &info); in genl_family_rcv_msg_doit()
739 err = ops->doit(skb, &info); in genl_family_rcv_msg_doit()
741 if (family->post_doit) in genl_family_rcv_msg_doit()
742 family->post_doit(ops, skb, &info); in genl_family_rcv_msg_doit()
750 static int genl_family_rcv_msg(const struct genl_family *family, in genl_family_rcv_msg() argument
755 struct net *net = sock_net(skb->sk); in genl_family_rcv_msg()
760 /* this family doesn't exist in this netns */ in genl_family_rcv_msg()
761 if (!family->netnsok && !net_eq(net, &init_net)) in genl_family_rcv_msg()
762 return -ENOENT; in genl_family_rcv_msg()
764 hdrlen = GENL_HDRLEN + family->hdrsize; in genl_family_rcv_msg()
765 if (nlh->nlmsg_len < nlmsg_msg_size(hdrlen)) in genl_family_rcv_msg()
766 return -EINVAL; in genl_family_rcv_msg()
768 if (genl_get_cmd(hdr->cmd, family, &op)) in genl_family_rcv_msg()
769 return -EOPNOTSUPP; in genl_family_rcv_msg()
773 return -EPERM; in genl_family_rcv_msg()
776 !netlink_ns_capable(skb, net->user_ns, CAP_NET_ADMIN)) in genl_family_rcv_msg()
777 return -EPERM; in genl_family_rcv_msg()
779 if ((nlh->nlmsg_flags & NLM_F_DUMP) == NLM_F_DUMP) in genl_family_rcv_msg()
780 return genl_family_rcv_msg_dumpit(family, skb, nlh, extack, in genl_family_rcv_msg()
783 return genl_family_rcv_msg_doit(family, skb, nlh, extack, in genl_family_rcv_msg()
790 const struct genl_family *family; in genl_rcv_msg() local
793 family = genl_family_find_byid(nlh->nlmsg_type); in genl_rcv_msg()
794 if (family == NULL) in genl_rcv_msg()
795 return -ENOENT; in genl_rcv_msg()
797 if (!family->parallel_ops) in genl_rcv_msg()
800 err = genl_family_rcv_msg(family, skb, nlh, extack); in genl_rcv_msg()
802 if (!family->parallel_ops) in genl_rcv_msg()
821 static int ctrl_fill_info(const struct genl_family *family, u32 portid, u32 seq, in ctrl_fill_info() argument
828 return -1; in ctrl_fill_info()
830 if (nla_put_string(skb, CTRL_ATTR_FAMILY_NAME, family->name) || in ctrl_fill_info()
831 nla_put_u16(skb, CTRL_ATTR_FAMILY_ID, family->id) || in ctrl_fill_info()
832 nla_put_u32(skb, CTRL_ATTR_VERSION, family->version) || in ctrl_fill_info()
833 nla_put_u32(skb, CTRL_ATTR_HDRSIZE, family->hdrsize) || in ctrl_fill_info()
834 nla_put_u32(skb, CTRL_ATTR_MAXATTR, family->maxattr)) in ctrl_fill_info()
837 if (genl_get_cmd_cnt(family)) { in ctrl_fill_info()
845 for (i = 0; i < genl_get_cmd_cnt(family); i++) { in ctrl_fill_info()
850 genl_get_cmd_by_index(i, family, &op); in ctrl_fill_info()
873 if (family->n_mcgrps) { in ctrl_fill_info()
881 for (i = 0; i < family->n_mcgrps; i++) { in ctrl_fill_info()
885 grp = &family->mcgrps[i]; in ctrl_fill_info()
892 family->mcgrp_offset + i) || in ctrl_fill_info()
894 grp->name)) in ctrl_fill_info()
907 return -EMSGSIZE; in ctrl_fill_info()
910 static int ctrl_fill_mcgrp_info(const struct genl_family *family, in ctrl_fill_mcgrp_info() argument
921 return -1; in ctrl_fill_mcgrp_info()
923 if (nla_put_string(skb, CTRL_ATTR_FAMILY_NAME, family->name) || in ctrl_fill_mcgrp_info()
924 nla_put_u16(skb, CTRL_ATTR_FAMILY_ID, family->id)) in ctrl_fill_mcgrp_info()
937 grp->name)) in ctrl_fill_mcgrp_info()
948 return -EMSGSIZE; in ctrl_fill_mcgrp_info()
955 struct net *net = sock_net(skb->sk); in ctrl_dumpfamily()
956 int fams_to_skip = cb->args[0]; in ctrl_dumpfamily()
960 if (!rt->netnsok && !net_eq(net, &init_net)) in ctrl_dumpfamily()
966 if (ctrl_fill_info(rt, NETLINK_CB(cb->skb).portid, in ctrl_dumpfamily()
967 cb->nlh->nlmsg_seq, NLM_F_MULTI, in ctrl_dumpfamily()
969 n--; in ctrl_dumpfamily()
974 cb->args[0] = n; in ctrl_dumpfamily()
975 return skb->len; in ctrl_dumpfamily()
978 static struct sk_buff *ctrl_build_family_msg(const struct genl_family *family, in ctrl_build_family_msg() argument
986 return ERR_PTR(-ENOBUFS); in ctrl_build_family_msg()
988 err = ctrl_fill_info(family, portid, seq, 0, skb, cmd); in ctrl_build_family_msg()
998 ctrl_build_mcgrp_msg(const struct genl_family *family, in ctrl_build_mcgrp_msg() argument
1007 return ERR_PTR(-ENOBUFS); in ctrl_build_mcgrp_msg()
1009 err = ctrl_fill_mcgrp_info(family, grp, grp_id, portid, in ctrl_build_mcgrp_msg()
1022 .len = GENL_NAMSIZ - 1 },
1029 int err = -EINVAL; in ctrl_getfamily()
1031 if (info->attrs[CTRL_ATTR_FAMILY_ID]) { in ctrl_getfamily()
1032 u16 id = nla_get_u16(info->attrs[CTRL_ATTR_FAMILY_ID]); in ctrl_getfamily()
1034 err = -ENOENT; in ctrl_getfamily()
1037 if (info->attrs[CTRL_ATTR_FAMILY_NAME]) { in ctrl_getfamily()
1038 char *name; in ctrl_getfamily() local
1040 name = nla_data(info->attrs[CTRL_ATTR_FAMILY_NAME]); in ctrl_getfamily()
1041 res = genl_family_find_byname(name); in ctrl_getfamily()
1046 request_module("net-pf-%d-proto-%d-family-%s", in ctrl_getfamily()
1047 PF_NETLINK, NETLINK_GENERIC, name); in ctrl_getfamily()
1050 res = genl_family_find_byname(name); in ctrl_getfamily()
1053 err = -ENOENT; in ctrl_getfamily()
1059 if (!res->netnsok && !net_eq(genl_info_net(info), &init_net)) { in ctrl_getfamily()
1060 /* family doesn't exist here */ in ctrl_getfamily()
1061 return -ENOENT; in ctrl_getfamily()
1064 msg = ctrl_build_family_msg(res, info->snd_portid, info->snd_seq, in ctrl_getfamily()
1072 static int genl_ctrl_event(int event, const struct genl_family *family, in genl_ctrl_event() argument
1086 msg = ctrl_build_family_msg(family, 0, 0, event); in genl_ctrl_event()
1091 msg = ctrl_build_mcgrp_msg(family, grp, grp_id, 0, 0, event); in genl_ctrl_event()
1094 return -EINVAL; in genl_ctrl_event()
1100 if (!family->netnsok) { in genl_ctrl_event()
1126 .len = GENL_NAMSIZ - 1 },
1133 struct ctrl_dump_policy_ctx *ctx = (void *)cb->ctx; in ctrl_dumppolicy_start()
1134 struct nlattr **tb = info->attrs; in ctrl_dumppolicy_start()
1139 BUILD_BUG_ON(sizeof(*ctx) > sizeof(cb->ctx)); in ctrl_dumppolicy_start()
1142 return -EINVAL; in ctrl_dumppolicy_start()
1145 ctx->fam_id = nla_get_u16(tb[CTRL_ATTR_FAMILY_ID]); in ctrl_dumppolicy_start()
1150 return -ENOENT; in ctrl_dumppolicy_start()
1151 ctx->fam_id = rt->id; in ctrl_dumppolicy_start()
1154 rt = genl_family_find_byid(ctx->fam_id); in ctrl_dumppolicy_start()
1156 return -ENOENT; in ctrl_dumppolicy_start()
1158 ctx->rt = rt; in ctrl_dumppolicy_start()
1161 ctx->single_op = true; in ctrl_dumppolicy_start()
1162 ctx->op = nla_get_u32(tb[CTRL_ATTR_OP]); in ctrl_dumppolicy_start()
1164 err = genl_get_cmd(ctx->op, rt, &op); in ctrl_dumppolicy_start()
1166 NL_SET_BAD_ATTR(cb->extack, tb[CTRL_ATTR_OP]); in ctrl_dumppolicy_start()
1171 return -ENODATA; in ctrl_dumppolicy_start()
1173 return netlink_policy_dump_add_policy(&ctx->state, op.policy, in ctrl_dumppolicy_start()
1181 err = netlink_policy_dump_add_policy(&ctx->state, in ctrl_dumppolicy_start()
1189 if (!ctx->state) in ctrl_dumppolicy_start()
1190 return -ENODATA; in ctrl_dumppolicy_start()
1194 netlink_policy_dump_free(ctx->state); in ctrl_dumppolicy_start()
1201 struct ctrl_dump_policy_ctx *ctx = (void *)cb->ctx; in ctrl_dumppolicy_prep()
1204 hdr = genlmsg_put(skb, NETLINK_CB(cb->skb).portid, in ctrl_dumppolicy_prep()
1205 cb->nlh->nlmsg_seq, &genl_ctrl, in ctrl_dumppolicy_prep()
1210 if (nla_put_u16(skb, CTRL_ATTR_FAMILY_ID, ctx->fam_id)) in ctrl_dumppolicy_prep()
1220 struct ctrl_dump_policy_ctx *ctx = (void *)cb->ctx; in ctrl_dumppolicy_put_op()
1226 if (!op->policy) in ctrl_dumppolicy_put_op()
1228 if (!op->doit && in ctrl_dumppolicy_put_op()
1229 (!op->dumpit || op->validate & GENL_DONT_VALIDATE_DUMP)) in ctrl_dumppolicy_put_op()
1234 return -ENOBUFS; in ctrl_dumppolicy_put_op()
1240 nest_op = nla_nest_start(skb, op->cmd); in ctrl_dumppolicy_put_op()
1245 idx = netlink_policy_dump_get_policy_idx(ctx->state, in ctrl_dumppolicy_put_op()
1246 op->policy, in ctrl_dumppolicy_put_op()
1247 op->maxattr); in ctrl_dumppolicy_put_op()
1249 if (op->doit && nla_put_u32(skb, CTRL_ATTR_POLICY_DO, idx)) in ctrl_dumppolicy_put_op()
1252 if (op->dumpit && !(op->validate & GENL_DONT_VALIDATE_DUMP) && in ctrl_dumppolicy_put_op()
1263 return -ENOBUFS; in ctrl_dumppolicy_put_op()
1268 struct ctrl_dump_policy_ctx *ctx = (void *)cb->ctx; in ctrl_dumppolicy()
1271 if (!ctx->policies) { in ctrl_dumppolicy()
1272 while (ctx->opidx < genl_get_cmd_cnt(ctx->rt)) { in ctrl_dumppolicy()
1275 if (ctx->single_op) { in ctrl_dumppolicy()
1278 err = genl_get_cmd(ctx->op, ctx->rt, &op); in ctrl_dumppolicy()
1280 return skb->len; in ctrl_dumppolicy()
1283 ctx->opidx = genl_get_cmd_cnt(ctx->rt); in ctrl_dumppolicy()
1285 genl_get_cmd_by_index(ctx->opidx, ctx->rt, &op); in ctrl_dumppolicy()
1289 return skb->len; in ctrl_dumppolicy()
1291 ctx->opidx++; in ctrl_dumppolicy()
1294 /* completed with the per-op policy index list */ in ctrl_dumppolicy()
1295 ctx->policies = true; in ctrl_dumppolicy()
1298 while (netlink_policy_dump_loop(ctx->state)) { in ctrl_dumppolicy()
1309 if (netlink_policy_dump_write(skb, ctx->state)) in ctrl_dumppolicy()
1317 return skb->len; in ctrl_dumppolicy()
1321 return skb->len; in ctrl_dumppolicy()
1326 struct ctrl_dump_policy_ctx *ctx = (void *)cb->ctx; in ctrl_dumppolicy_done()
1328 netlink_policy_dump_free(ctx->state); in ctrl_dumppolicy_done()
1337 .maxattr = ARRAY_SIZE(ctrl_policy_family) - 1,
1344 .maxattr = ARRAY_SIZE(ctrl_policy_policy) - 1,
1352 { .name = "notify", },
1362 .name = "nlctrl",
1369 const struct genl_family *family; in genl_bind() local
1375 idr_for_each_entry(&genl_fam_idr, family, id) { in genl_bind()
1379 if (family->n_mcgrps == 0) in genl_bind()
1382 i = group - family->mcgrp_offset; in genl_bind()
1383 if (i < 0 || i >= family->n_mcgrps) in genl_bind()
1386 grp = &family->mcgrps[i]; in genl_bind()
1387 if ((grp->flags & GENL_UNS_ADMIN_PERM) && in genl_bind()
1388 !ns_capable(net->user_ns, CAP_NET_ADMIN)) in genl_bind()
1389 ret = -EPERM; in genl_bind()
1390 if (grp->cap_sys_admin && in genl_bind()
1391 !ns_capable(net->user_ns, CAP_SYS_ADMIN)) in genl_bind()
1392 ret = -EPERM; in genl_bind()
1410 net->genl_sock = netlink_kernel_create(net, NETLINK_GENERIC, &cfg); in genl_pernet_init()
1412 if (!net->genl_sock && net_eq(net, &init_net)) in genl_pernet_init()
1415 if (!net->genl_sock) in genl_pernet_init()
1416 return -ENOMEM; in genl_pernet_init()
1423 netlink_kernel_release(net->genl_sock); in genl_pernet_exit()
1424 net->genl_sock = NULL; in genl_pernet_exit()
1464 err = -ENOMEM; in genlmsg_mcast()
1467 err = nlmsg_multicast(prev->genl_sock, tmp, in genlmsg_mcast()
1471 else if (err != -ESRCH) in genlmsg_mcast()
1478 err = nlmsg_multicast(prev->genl_sock, skb, portid, group, flags); in genlmsg_mcast()
1481 else if (err != -ESRCH) in genlmsg_mcast()
1483 return delivered ? 0 : -ESRCH; in genlmsg_mcast()
1489 int genlmsg_multicast_allns(const struct genl_family *family, in genlmsg_multicast_allns() argument
1493 if (WARN_ON_ONCE(group >= family->n_mcgrps)) in genlmsg_multicast_allns()
1494 return -EINVAL; in genlmsg_multicast_allns()
1495 group = family->mcgrp_offset + group; in genlmsg_multicast_allns()
1500 void genl_notify(const struct genl_family *family, struct sk_buff *skb, in genl_notify() argument
1504 struct sock *sk = net->genl_sock; in genl_notify()
1507 if (info->nlhdr) in genl_notify()
1508 report = nlmsg_report(info->nlhdr); in genl_notify()
1510 if (WARN_ON_ONCE(group >= family->n_mcgrps)) in genl_notify()
1512 group = family->mcgrp_offset + group; in genl_notify()
1513 nlmsg_notify(sk, skb, info->snd_portid, group, report, flags); in genl_notify()