static int nft_target_init(const struct nft_ctx *ctx, const struct nft_expr *expr, const struct nlattr * const tb[]) { void *info = nft_expr_priv(expr); struct xt_target *target = expr->ops->data; struct xt_tgchk_param par; size_t size = XT_ALIGN(nla_len(tb[NFTA_TARGET_INFO])); u16 proto = 0; bool inv = false; union nft_entry e = {}; int ret; target_compat_from_user(target, nla_data(tb[NFTA_TARGET_INFO]), info); if (ctx->nla[NFTA_RULE_COMPAT]) { ret = nft_parse_compat(ctx->nla[NFTA_RULE_COMPAT], &proto, &inv); if (ret < 0) return ret; } nft_target_set_tgchk_param(&par, ctx, target, info, &e, proto, inv); ret = xt_check_target(&par, size, proto, inv); if (ret < 0) return ret; /* The standard target cannot be used */ if (!target->target) return -EINVAL; return 0; }
static int __nft_match_init(const struct nft_ctx *ctx, const struct nft_expr *expr, const struct nlattr * const tb[], void *info) { struct xt_match *match = expr->ops->data; struct xt_mtchk_param par; size_t size = XT_ALIGN(nla_len(tb[NFTA_MATCH_INFO])); u16 proto = 0; bool inv = false; union nft_entry e = {}; int ret; match_compat_from_user(match, nla_data(tb[NFTA_MATCH_INFO]), info); if (ctx->nla[NFTA_RULE_COMPAT]) { ret = nft_parse_compat(ctx->nla[NFTA_RULE_COMPAT], &proto, &inv); if (ret < 0) return ret; } nft_match_set_mtchk_param(&par, ctx, match, info, &e, proto, inv); return xt_check_match(&par, size, proto, inv); }
static int nft_target_init(const struct nft_ctx *ctx, const struct nft_expr *expr, const struct nlattr * const tb[]) { void *info = nft_expr_priv(expr); struct xt_target *target = expr->ops->data; struct xt_tgchk_param par; size_t size = XT_ALIGN(nla_len(tb[NFTA_TARGET_INFO])); u8 proto = 0; bool inv = false; union nft_entry e = {}; int ret; ret = nft_compat_chain_validate_dependency(target->table, ctx->chain); if (ret < 0) goto err; target_compat_from_user(target, nla_data(tb[NFTA_TARGET_INFO]), info); if (ctx->nla[NFTA_RULE_COMPAT]) { ret = nft_parse_compat(ctx->nla[NFTA_RULE_COMPAT], &proto, &inv); if (ret < 0) goto err; } nft_target_set_tgchk_param(&par, ctx, target, info, &e, proto, inv); ret = xt_check_target(&par, size, proto, inv); if (ret < 0) goto err; /* The standard target cannot be used */ if (target->target == NULL) { ret = -EINVAL; goto err; } return 0; err: module_put(target->me); return ret; }
static int nft_match_init(const struct nft_ctx *ctx, const struct nft_expr *expr, const struct nlattr * const tb[]) { void *info = nft_expr_priv(expr); struct xt_match *match = expr->ops->data; struct xt_mtchk_param par; size_t size = XT_ALIGN(nla_len(tb[NFTA_MATCH_INFO])); u16 proto = 0; bool inv = false; union nft_entry e = {}; int ret; ret = nft_compat_chain_validate_dependency(match->table, ctx->chain); if (ret < 0) goto err; match_compat_from_user(match, nla_data(tb[NFTA_MATCH_INFO]), info); if (ctx->nla[NFTA_RULE_COMPAT]) { ret = nft_parse_compat(ctx->nla[NFTA_RULE_COMPAT], &proto, &inv); if (ret < 0) goto err; } nft_match_set_mtchk_param(&par, ctx, match, info, &e, proto, inv); ret = xt_check_match(&par, size, proto, inv); if (ret < 0) goto err; return 0; err: module_put(match->me); return ret; }