14#include <netinet/in.h>
18#include <libmnl/libmnl.h>
19#include <linux/netfilter/nfnetlink.h>
20#include <linux/netfilter/nf_tables.h>
22#include <libnftnl/set.h>
23#include <libnftnl/rule.h>
24#include <libnftnl/expr.h>
26EXPORT_SYMBOL(nftnl_set_elem_alloc);
27struct nftnl_set_elem *nftnl_set_elem_alloc(
void)
29 struct nftnl_set_elem *s;
31 s = calloc(1,
sizeof(
struct nftnl_set_elem));
35 INIT_LIST_HEAD(&s->expr_list);
40EXPORT_SYMBOL(nftnl_set_elem_free);
41void nftnl_set_elem_free(
struct nftnl_set_elem *s)
43 struct nftnl_expr *e, *tmp;
45 if (s->flags & (1 << NFTNL_SET_ELEM_CHAIN))
48 list_for_each_entry_safe(e, tmp, &s->expr_list, head)
51 if (s->flags & (1 << NFTNL_SET_ELEM_USERDATA))
54 if (s->flags & (1 << NFTNL_SET_ELEM_OBJREF))
60EXPORT_SYMBOL(nftnl_set_elem_is_set);
61bool nftnl_set_elem_is_set(
const struct nftnl_set_elem *s, uint16_t attr)
63 return s->flags & (1 << attr);
66EXPORT_SYMBOL(nftnl_set_elem_unset);
67void nftnl_set_elem_unset(
struct nftnl_set_elem *s, uint16_t attr)
69 struct nftnl_expr *expr, *tmp;
71 if (!(s->flags & (1 << attr)))
75 case NFTNL_SET_ELEM_CHAIN:
78 case NFTNL_SET_ELEM_FLAGS:
79 case NFTNL_SET_ELEM_KEY:
80 case NFTNL_SET_ELEM_KEY_END:
81 case NFTNL_SET_ELEM_VERDICT:
82 case NFTNL_SET_ELEM_DATA:
83 case NFTNL_SET_ELEM_TIMEOUT:
84 case NFTNL_SET_ELEM_EXPIRATION:
86 case NFTNL_SET_ELEM_USERDATA:
89 case NFTNL_SET_ELEM_EXPR:
90 case NFTNL_SET_ELEM_EXPRESSIONS:
91 list_for_each_entry_safe(expr, tmp, &s->expr_list, head)
92 nftnl_expr_free(expr);
94 case NFTNL_SET_ELEM_OBJREF:
101 s->flags &= ~(1 << attr);
104static uint32_t nftnl_set_elem_validate[NFTNL_SET_ELEM_MAX + 1] = {
105 [NFTNL_SET_ELEM_FLAGS] =
sizeof(uint32_t),
106 [NFTNL_SET_ELEM_VERDICT] =
sizeof(uint32_t),
107 [NFTNL_SET_ELEM_TIMEOUT] =
sizeof(uint64_t),
108 [NFTNL_SET_ELEM_EXPIRATION] =
sizeof(uint64_t),
111EXPORT_SYMBOL(nftnl_set_elem_set);
112int nftnl_set_elem_set(
struct nftnl_set_elem *s, uint16_t attr,
113 const void *data, uint32_t data_len)
115 struct nftnl_expr *expr, *tmp;
117 nftnl_assert_attr_exists(attr, NFTNL_SET_ELEM_MAX);
118 nftnl_assert_validate(data, nftnl_set_elem_validate, attr, data_len);
121 case NFTNL_SET_ELEM_FLAGS:
122 memcpy(&s->set_elem_flags, data,
sizeof(s->set_elem_flags));
124 case NFTNL_SET_ELEM_KEY:
125 if (nftnl_data_cpy(&s->key, data, data_len) < 0)
128 case NFTNL_SET_ELEM_KEY_END:
129 if (nftnl_data_cpy(&s->key_end, data, data_len) < 0)
132 case NFTNL_SET_ELEM_VERDICT:
133 memcpy(&s->data.verdict, data,
sizeof(s->data.verdict));
135 case NFTNL_SET_ELEM_CHAIN:
136 if (s->flags & (1 << NFTNL_SET_ELEM_CHAIN))
137 xfree(s->data.chain);
139 s->data.chain = strdup(data);
143 case NFTNL_SET_ELEM_DATA:
144 if (nftnl_data_cpy(&s->data, data, data_len) < 0)
147 case NFTNL_SET_ELEM_TIMEOUT:
148 memcpy(&s->timeout, data,
sizeof(s->timeout));
150 case NFTNL_SET_ELEM_EXPIRATION:
151 memcpy(&s->expiration, data,
sizeof(s->expiration));
153 case NFTNL_SET_ELEM_USERDATA:
154 if (s->flags & (1 << NFTNL_SET_ELEM_USERDATA))
157 s->user.data = malloc(data_len);
160 memcpy(s->user.data, data, data_len);
161 s->user.len = data_len;
163 case NFTNL_SET_ELEM_OBJREF:
164 if (s->flags & (1 << NFTNL_SET_ELEM_OBJREF))
167 s->objref = strdup(data);
171 case NFTNL_SET_ELEM_EXPR:
172 list_for_each_entry_safe(expr, tmp, &s->expr_list, head)
173 nftnl_expr_free(expr);
176 list_add(&expr->head, &s->expr_list);
179 s->flags |= (1 << attr);
183EXPORT_SYMBOL(nftnl_set_elem_set_u32);
184void nftnl_set_elem_set_u32(
struct nftnl_set_elem *s, uint16_t attr, uint32_t val)
186 nftnl_set_elem_set(s, attr, &val,
sizeof(uint32_t));
189EXPORT_SYMBOL(nftnl_set_elem_set_u64);
190void nftnl_set_elem_set_u64(
struct nftnl_set_elem *s, uint16_t attr, uint64_t val)
192 nftnl_set_elem_set(s, attr, &val,
sizeof(uint64_t));
195EXPORT_SYMBOL(nftnl_set_elem_set_str);
196int nftnl_set_elem_set_str(
struct nftnl_set_elem *s, uint16_t attr,
const char *str)
198 return nftnl_set_elem_set(s, attr, str, strlen(str) + 1);
201EXPORT_SYMBOL(nftnl_set_elem_get);
202const void *nftnl_set_elem_get(
struct nftnl_set_elem *s, uint16_t attr, uint32_t *data_len)
204 struct nftnl_expr *expr;
206 if (!(s->flags & (1 << attr)))
210 case NFTNL_SET_ELEM_FLAGS:
211 *data_len =
sizeof(s->set_elem_flags);
212 return &s->set_elem_flags;
213 case NFTNL_SET_ELEM_KEY:
214 *data_len = s->key.len;
216 case NFTNL_SET_ELEM_KEY_END:
217 *data_len = s->key_end.len;
218 return &s->key_end.val;
219 case NFTNL_SET_ELEM_VERDICT:
220 *data_len =
sizeof(s->data.verdict);
221 return &s->data.verdict;
222 case NFTNL_SET_ELEM_CHAIN:
223 *data_len = strlen(s->data.chain) + 1;
224 return s->data.chain;
225 case NFTNL_SET_ELEM_DATA:
226 *data_len = s->data.len;
228 case NFTNL_SET_ELEM_TIMEOUT:
229 *data_len =
sizeof(s->timeout);
231 case NFTNL_SET_ELEM_EXPIRATION:
232 *data_len =
sizeof(s->expiration);
233 return &s->expiration;
234 case NFTNL_SET_ELEM_USERDATA:
235 *data_len = s->user.len;
237 case NFTNL_SET_ELEM_EXPR:
238 list_for_each_entry(expr, &s->expr_list, head)
241 case NFTNL_SET_ELEM_OBJREF:
242 *data_len = strlen(s->objref) + 1;
248EXPORT_SYMBOL(nftnl_set_elem_get_str);
249const char *nftnl_set_elem_get_str(
struct nftnl_set_elem *s, uint16_t attr)
253 return nftnl_set_elem_get(s, attr, &size);
256EXPORT_SYMBOL(nftnl_set_elem_get_u32);
257uint32_t nftnl_set_elem_get_u32(
struct nftnl_set_elem *s, uint16_t attr)
261 memcpy(&val, nftnl_set_elem_get(s, attr, &size),
sizeof(val));
266EXPORT_SYMBOL(nftnl_set_elem_get_u64);
267uint64_t nftnl_set_elem_get_u64(
struct nftnl_set_elem *s, uint16_t attr)
272 memcpy(&val, nftnl_set_elem_get(s, attr, &size),
sizeof(val));
277struct nftnl_set_elem *nftnl_set_elem_clone(
struct nftnl_set_elem *elem)
279 struct nftnl_set_elem *newelem;
281 newelem = nftnl_set_elem_alloc();
285 memcpy(newelem, elem,
sizeof(*elem));
287 if (elem->flags & (1 << NFTNL_SET_ELEM_CHAIN)) {
288 newelem->data.chain = strdup(elem->data.chain);
289 if (!newelem->data.chain)
295 nftnl_set_elem_free(newelem);
299EXPORT_SYMBOL(nftnl_set_elem_nlmsg_build_payload);
300void nftnl_set_elem_nlmsg_build_payload(
struct nlmsghdr *nlh,
301 struct nftnl_set_elem *e)
303 struct nftnl_expr *expr;
306 if (e->flags & (1 << NFTNL_SET_ELEM_FLAGS))
307 mnl_attr_put_u32(nlh, NFTA_SET_ELEM_FLAGS, htonl(e->set_elem_flags));
308 if (e->flags & (1 << NFTNL_SET_ELEM_TIMEOUT))
309 mnl_attr_put_u64(nlh, NFTA_SET_ELEM_TIMEOUT, htobe64(e->timeout));
310 if (e->flags & (1 << NFTNL_SET_ELEM_EXPIRATION))
311 mnl_attr_put_u64(nlh, NFTA_SET_ELEM_EXPIRATION, htobe64(e->expiration));
312 if (e->flags & (1 << NFTNL_SET_ELEM_KEY)) {
313 struct nlattr *nest1;
315 nest1 = mnl_attr_nest_start(nlh, NFTA_SET_ELEM_KEY);
316 mnl_attr_put(nlh, NFTA_DATA_VALUE, e->key.len, e->key.val);
317 mnl_attr_nest_end(nlh, nest1);
319 if (e->flags & (1 << NFTNL_SET_ELEM_KEY_END)) {
320 struct nlattr *nest1;
322 nest1 = mnl_attr_nest_start(nlh, NFTA_SET_ELEM_KEY_END);
323 mnl_attr_put(nlh, NFTA_DATA_VALUE, e->key_end.len,
325 mnl_attr_nest_end(nlh, nest1);
327 if (e->flags & (1 << NFTNL_SET_ELEM_VERDICT)) {
328 struct nlattr *nest1, *nest2;
330 nest1 = mnl_attr_nest_start(nlh, NFTA_SET_ELEM_DATA);
331 nest2 = mnl_attr_nest_start(nlh, NFTA_DATA_VERDICT);
332 mnl_attr_put_u32(nlh, NFTA_VERDICT_CODE, htonl(e->data.verdict));
333 if (e->flags & (1 << NFTNL_SET_ELEM_CHAIN))
334 mnl_attr_put_strz(nlh, NFTA_VERDICT_CHAIN, e->data.chain);
336 mnl_attr_nest_end(nlh, nest1);
337 mnl_attr_nest_end(nlh, nest2);
339 if (e->flags & (1 << NFTNL_SET_ELEM_DATA)) {
340 struct nlattr *nest1;
342 nest1 = mnl_attr_nest_start(nlh, NFTA_SET_ELEM_DATA);
343 mnl_attr_put(nlh, NFTA_DATA_VALUE, e->data.len, e->data.val);
344 mnl_attr_nest_end(nlh, nest1);
346 if (e->flags & (1 << NFTNL_SET_ELEM_USERDATA))
347 mnl_attr_put(nlh, NFTA_SET_ELEM_USERDATA, e->user.len, e->user.data);
348 if (e->flags & (1 << NFTNL_SET_ELEM_OBJREF))
349 mnl_attr_put_strz(nlh, NFTA_SET_ELEM_OBJREF, e->objref);
351 if (!list_empty(&e->expr_list)) {
352 list_for_each_entry(expr, &e->expr_list, head)
355 if (num_exprs == 1) {
356 struct nlattr *nest1;
358 nest1 = mnl_attr_nest_start(nlh, NFTA_SET_ELEM_EXPR);
359 list_for_each_entry(expr, &e->expr_list, head)
360 nftnl_expr_build_payload(nlh, expr);
362 mnl_attr_nest_end(nlh, nest1);
363 }
else if (num_exprs > 1) {
364 struct nlattr *nest1, *nest2;
366 nest1 = mnl_attr_nest_start(nlh, NFTA_SET_ELEM_EXPRESSIONS);
367 list_for_each_entry(expr, &e->expr_list, head) {
368 nest2 = mnl_attr_nest_start(nlh, NFTA_LIST_ELEM);
369 nftnl_expr_build_payload(nlh, expr);
370 mnl_attr_nest_end(nlh, nest2);
372 mnl_attr_nest_end(nlh, nest1);
377static void nftnl_set_elem_nlmsg_build_def(
struct nlmsghdr *nlh,
378 const struct nftnl_set *s)
380 if (s->flags & (1 << NFTNL_SET_NAME))
381 mnl_attr_put_strz(nlh, NFTA_SET_ELEM_LIST_SET, s->name);
382 if (s->flags & (1 << NFTNL_SET_ID))
383 mnl_attr_put_u32(nlh, NFTA_SET_ELEM_LIST_SET_ID, htonl(s->id));
384 if (s->flags & (1 << NFTNL_SET_TABLE))
385 mnl_attr_put_strz(nlh, NFTA_SET_ELEM_LIST_TABLE, s->table);
388EXPORT_SYMBOL(nftnl_set_elem_nlmsg_build);
389struct nlattr *nftnl_set_elem_nlmsg_build(
struct nlmsghdr *nlh,
390 struct nftnl_set_elem *elem,
int i)
392 struct nlattr *nest2;
394 nest2 = mnl_attr_nest_start(nlh, i);
395 nftnl_set_elem_nlmsg_build_payload(nlh, elem);
396 mnl_attr_nest_end(nlh, nest2);
401EXPORT_SYMBOL(nftnl_set_elems_nlmsg_build_payload);
402void nftnl_set_elems_nlmsg_build_payload(
struct nlmsghdr *nlh,
struct nftnl_set *s)
404 struct nftnl_set_elem *elem;
405 struct nlattr *nest1;
408 nftnl_set_elem_nlmsg_build_def(nlh, s);
410 if (list_empty(&s->element_list))
413 nest1 = mnl_attr_nest_start(nlh, NFTA_SET_ELEM_LIST_ELEMENTS);
414 list_for_each_entry(elem, &s->element_list, head)
415 nftnl_set_elem_nlmsg_build(nlh, elem, ++i);
417 mnl_attr_nest_end(nlh, nest1);
420EXPORT_SYMBOL(nftnl_set_elem_add_expr);
421void nftnl_set_elem_add_expr(
struct nftnl_set_elem *e,
struct nftnl_expr *expr)
423 list_add_tail(&expr->head, &e->expr_list);
426EXPORT_SYMBOL(nftnl_set_elem_expr_foreach);
427int nftnl_set_elem_expr_foreach(
struct nftnl_set_elem *e,
428 int (*cb)(
struct nftnl_expr *e,
void *data),
431 struct nftnl_expr *cur, *tmp;
434 list_for_each_entry_safe(cur, tmp, &e->expr_list, head) {
442static int nftnl_set_elem_parse_attr_cb(
const struct nlattr *attr,
void *data)
444 const struct nlattr **tb = data;
445 int type = mnl_attr_get_type(attr);
447 if (mnl_attr_type_valid(attr, NFTA_SET_MAX) < 0)
451 case NFTA_SET_ELEM_FLAGS:
452 if (mnl_attr_validate(attr, MNL_TYPE_U32) < 0)
455 case NFTA_SET_ELEM_TIMEOUT:
456 case NFTA_SET_ELEM_EXPIRATION:
457 if (mnl_attr_validate(attr, MNL_TYPE_U64) < 0)
460 case NFTA_SET_ELEM_KEY:
461 case NFTA_SET_ELEM_KEY_END:
462 case NFTA_SET_ELEM_DATA:
463 case NFTA_SET_ELEM_EXPR:
464 case NFTA_SET_ELEM_EXPRESSIONS:
465 if (mnl_attr_validate(attr, MNL_TYPE_NESTED) < 0)
468 case NFTA_SET_ELEM_USERDATA:
469 if (mnl_attr_validate(attr, MNL_TYPE_BINARY) < 0)
478static int nftnl_set_elems_parse2(
struct nftnl_set *s,
const struct nlattr *nest)
480 struct nlattr *tb[NFTA_SET_ELEM_MAX+1] = {};
481 struct nftnl_set_elem *e;
484 e = nftnl_set_elem_alloc();
488 ret = mnl_attr_parse_nested(nest, nftnl_set_elem_parse_attr_cb, tb);
492 if (tb[NFTA_SET_ELEM_FLAGS]) {
494 ntohl(mnl_attr_get_u32(tb[NFTA_SET_ELEM_FLAGS]));
495 e->flags |= (1 << NFTNL_SET_ELEM_FLAGS);
497 if (tb[NFTA_SET_ELEM_TIMEOUT]) {
498 e->timeout = be64toh(mnl_attr_get_u64(tb[NFTA_SET_ELEM_TIMEOUT]));
499 e->flags |= (1 << NFTNL_SET_ELEM_TIMEOUT);
501 if (tb[NFTA_SET_ELEM_EXPIRATION]) {
502 e->expiration = be64toh(mnl_attr_get_u64(tb[NFTA_SET_ELEM_EXPIRATION]));
503 e->flags |= (1 << NFTNL_SET_ELEM_EXPIRATION);
505 if (tb[NFTA_SET_ELEM_KEY]) {
506 ret = nftnl_parse_data(&e->key, tb[NFTA_SET_ELEM_KEY], &type);
509 e->flags |= (1 << NFTNL_SET_ELEM_KEY);
511 if (tb[NFTA_SET_ELEM_KEY_END]) {
512 ret = nftnl_parse_data(&e->key_end, tb[NFTA_SET_ELEM_KEY_END],
516 e->flags |= (1 << NFTNL_SET_ELEM_KEY_END);
518 if (tb[NFTA_SET_ELEM_DATA]) {
519 ret = nftnl_parse_data(&e->data, tb[NFTA_SET_ELEM_DATA], &type);
524 e->flags |= (1 << NFTNL_SET_ELEM_VERDICT);
527 e->flags |= (1 << NFTNL_SET_ELEM_VERDICT) |
528 (1 << NFTNL_SET_ELEM_CHAIN);
531 e->flags |= (1 << NFTNL_SET_ELEM_DATA);
535 if (tb[NFTA_SET_ELEM_EXPR]) {
536 struct nftnl_expr *expr;
538 expr = nftnl_expr_parse(tb[NFTA_SET_ELEM_EXPR]);
543 list_add_tail(&expr->head, &e->expr_list);
544 e->flags |= (1 << NFTNL_SET_ELEM_EXPR);
545 }
else if (tb[NFTA_SET_ELEM_EXPRESSIONS]) {
546 struct nftnl_expr *expr;
549 mnl_attr_for_each_nested(attr, tb[NFTA_SET_ELEM_EXPRESSIONS]) {
550 if (mnl_attr_get_type(attr) != NFTA_LIST_ELEM) {
554 expr = nftnl_expr_parse(attr);
559 list_add_tail(&expr->head, &e->expr_list);
561 e->flags |= (1 << NFTNL_SET_ELEM_EXPRESSIONS);
563 if (tb[NFTA_SET_ELEM_USERDATA]) {
565 mnl_attr_get_payload(tb[NFTA_SET_ELEM_USERDATA]);
567 if (e->flags & (1 << NFTNL_RULE_USERDATA))
570 e->user.len = mnl_attr_get_payload_len(tb[NFTA_SET_ELEM_USERDATA]);
571 e->user.data = malloc(e->user.len);
572 if (e->user.data == NULL) {
576 memcpy(e->user.data, udata, e->user.len);
577 e->flags |= (1 << NFTNL_RULE_USERDATA);
579 if (tb[NFTA_SET_ELEM_OBJREF]) {
580 e->objref = strdup(mnl_attr_get_str(tb[NFTA_SET_ELEM_OBJREF]));
581 if (e->objref == NULL) {
585 e->flags |= (1 << NFTNL_SET_ELEM_OBJREF);
589 list_add_tail(&e->head, &s->element_list);
593 nftnl_set_elem_free(e);
598nftnl_set_elem_list_parse_attr_cb(
const struct nlattr *attr,
void *data)
600 const struct nlattr **tb = data;
601 int type = mnl_attr_get_type(attr);
603 if (mnl_attr_type_valid(attr, NFTA_SET_ELEM_LIST_MAX) < 0)
607 case NFTA_SET_ELEM_LIST_TABLE:
608 case NFTA_SET_ELEM_LIST_SET:
609 if (mnl_attr_validate(attr, MNL_TYPE_STRING) < 0)
612 case NFTA_SET_ELEM_LIST_ELEMENTS:
613 if (mnl_attr_validate(attr, MNL_TYPE_NESTED) < 0)
622static int nftnl_set_elems_parse(
struct nftnl_set *s,
const struct nlattr *nest)
627 mnl_attr_for_each_nested(attr, nest) {
628 if (mnl_attr_get_type(attr) != NFTA_LIST_ELEM)
631 ret = nftnl_set_elems_parse2(s, attr);
638EXPORT_SYMBOL(nftnl_set_elems_nlmsg_parse);
639int nftnl_set_elems_nlmsg_parse(
const struct nlmsghdr *nlh,
struct nftnl_set *s)
641 struct nlattr *tb[NFTA_SET_ELEM_LIST_MAX+1] = {};
642 struct nfgenmsg *nfg = mnl_nlmsg_get_payload(nlh);
645 if (mnl_attr_parse(nlh,
sizeof(*nfg),
646 nftnl_set_elem_list_parse_attr_cb, tb) < 0)
649 if (tb[NFTA_SET_ELEM_LIST_TABLE]) {
650 if (s->flags & (1 << NFTNL_SET_TABLE))
653 strdup(mnl_attr_get_str(tb[NFTA_SET_ELEM_LIST_TABLE]));
656 s->flags |= (1 << NFTNL_SET_TABLE);
658 if (tb[NFTA_SET_ELEM_LIST_SET]) {
659 if (s->flags & (1 << NFTNL_SET_NAME))
662 strdup(mnl_attr_get_str(tb[NFTA_SET_ELEM_LIST_SET]));
665 s->flags |= (1 << NFTNL_SET_NAME);
667 if (tb[NFTA_SET_ELEM_LIST_SET_ID]) {
668 s->id = ntohl(mnl_attr_get_u32(tb[NFTA_SET_ELEM_LIST_SET_ID]));
669 s->flags |= (1 << NFTNL_SET_ID);
671 if (tb[NFTA_SET_ELEM_LIST_ELEMENTS]) {
672 ret = nftnl_set_elems_parse(s, tb[NFTA_SET_ELEM_LIST_ELEMENTS]);
677 s->family = nfg->nfgen_family;
678 s->flags |= (1 << NFTNL_SET_FAMILY);
683EXPORT_SYMBOL(nftnl_set_elem_parse);
684int nftnl_set_elem_parse(
struct nftnl_set_elem *e,
enum nftnl_parse_type type,
685 const char *data,
struct nftnl_parse_err *err)
691EXPORT_SYMBOL(nftnl_set_elem_parse_file);
692int nftnl_set_elem_parse_file(
struct nftnl_set_elem *e,
enum nftnl_parse_type type,
693 FILE *fp,
struct nftnl_parse_err *err)
699int nftnl_set_elem_snprintf_default(
char *buf,
size_t remain,
700 const struct nftnl_set_elem *e)
702 int ret, dregtype = DATA_VALUE, offset = 0, i;
704 ret = snprintf(buf, remain,
"element ");
705 SNPRINTF_BUFFER_SIZE(ret, remain, offset);
707 ret = nftnl_data_reg_snprintf(buf + offset, remain, &e->key,
708 DATA_F_NOPFX, DATA_VALUE);
709 SNPRINTF_BUFFER_SIZE(ret, remain, offset);
711 if (e->flags & (1 << NFTNL_SET_ELEM_KEY_END)) {
712 ret = snprintf(buf + offset, remain,
" - ");
713 SNPRINTF_BUFFER_SIZE(ret, remain, offset);
715 ret = nftnl_data_reg_snprintf(buf + offset, remain, &e->key_end,
716 DATA_F_NOPFX, DATA_VALUE);
717 SNPRINTF_BUFFER_SIZE(ret, remain, offset);
720 ret = snprintf(buf + offset, remain,
" : ");
721 SNPRINTF_BUFFER_SIZE(ret, remain, offset);
723 if (e->flags & (1 << NFTNL_SET_ELEM_VERDICT))
724 dregtype = DATA_VERDICT;
726 ret = nftnl_data_reg_snprintf(buf + offset, remain, &e->data,
727 DATA_F_NOPFX, dregtype);
728 SNPRINTF_BUFFER_SIZE(ret, remain, offset);
730 ret = snprintf(buf + offset, remain,
"%u [end]", e->set_elem_flags);
731 SNPRINTF_BUFFER_SIZE(ret, remain, offset);
734 ret = snprintf(buf + offset, remain,
" userdata = { ");
735 SNPRINTF_BUFFER_SIZE(ret, remain, offset);
737 for (i = 0; i < e->user.len; i++) {
738 char *c = e->user.data;
740 ret = snprintf(buf + offset, remain,
741 isprint(c[i]) ?
"%c" :
"\\x%02hhx",
743 SNPRINTF_BUFFER_SIZE(ret, remain, offset);
746 ret = snprintf(buf + offset, remain,
" }");
747 SNPRINTF_BUFFER_SIZE(ret, remain, offset);
753static int nftnl_set_elem_cmd_snprintf(
char *buf,
size_t remain,
754 const struct nftnl_set_elem *e,
755 uint32_t cmd, uint32_t type,
760 if (type != NFTNL_OUTPUT_DEFAULT)
763 ret = nftnl_set_elem_snprintf_default(buf + offset, remain, e);
764 SNPRINTF_BUFFER_SIZE(ret, remain, offset);
769EXPORT_SYMBOL(nftnl_set_elem_snprintf);
770int nftnl_set_elem_snprintf(
char *buf,
size_t size,
771 const struct nftnl_set_elem *e,
772 uint32_t type, uint32_t flags)
777 return nftnl_set_elem_cmd_snprintf(buf, size, e, nftnl_flag2cmd(flags),
781static int nftnl_set_elem_do_snprintf(
char *buf,
size_t size,
const void *e,
782 uint32_t cmd, uint32_t type,
785 return nftnl_set_elem_snprintf(buf, size, e, type, flags);
788EXPORT_SYMBOL(nftnl_set_elem_fprintf);
789int nftnl_set_elem_fprintf(FILE *fp,
const struct nftnl_set_elem *se, uint32_t type,
792 return nftnl_fprintf(fp, se, NFTNL_CMD_UNSPEC, type, flags,
793 nftnl_set_elem_do_snprintf);
796EXPORT_SYMBOL(nftnl_set_elem_foreach);
797int nftnl_set_elem_foreach(
struct nftnl_set *s,
798 int (*cb)(
struct nftnl_set_elem *e,
void *data),
801 struct nftnl_set_elem *elem;
804 list_for_each_entry(elem, &s->element_list, head) {
805 ret = cb(elem, data);
813 const struct nftnl_set *set;
814 const struct list_head *list;
815 struct nftnl_set_elem *cur;
818EXPORT_SYMBOL(nftnl_set_elems_iter_create);
820nftnl_set_elems_iter_create(
const struct nftnl_set *s)
829 iter->list = &s->element_list;
830 if (list_empty(&s->element_list))
833 iter->cur = list_entry(s->element_list.next,
834 struct nftnl_set_elem, head);
839EXPORT_SYMBOL(nftnl_set_elems_iter_cur);
840struct nftnl_set_elem *
846EXPORT_SYMBOL(nftnl_set_elems_iter_next);
849 struct nftnl_set_elem *s = iter->cur;
854 iter->cur = list_entry(iter->cur->head.next,
struct nftnl_set_elem, head);
855 if (&iter->cur->head == iter->list->next)
861EXPORT_SYMBOL(nftnl_set_elems_iter_destroy);
867static bool nftnl_attr_nest_overflow(
struct nlmsghdr *nlh,
868 const struct nlattr *from,
869 const struct nlattr *to)
871 int len = (
void *)to + to->nla_len - (
void *)from;
877 if (len > UINT16_MAX) {
878 nlh->nlmsg_len -= to->nla_len;
884EXPORT_SYMBOL(nftnl_set_elems_nlmsg_build_payload_iter);
885int nftnl_set_elems_nlmsg_build_payload_iter(
struct nlmsghdr *nlh,
888 struct nftnl_set_elem *elem;
889 struct nlattr *nest1, *nest2;
892 nftnl_set_elem_nlmsg_build_def(nlh, iter->set);
895 if (list_empty(&iter->set->element_list))
898 nest1 = mnl_attr_nest_start(nlh, NFTA_SET_ELEM_LIST_ELEMENTS);
899 elem = nftnl_set_elems_iter_next(iter);
900 while (elem != NULL) {
901 nest2 = nftnl_set_elem_nlmsg_build(nlh, elem, ++i);
902 if (nftnl_attr_nest_overflow(nlh, nest1, nest2)) {
904 iter->cur = list_entry(iter->cur->head.prev,
905 struct nftnl_set_elem, head);
909 elem = nftnl_set_elems_iter_next(iter);
911 mnl_attr_nest_end(nlh, nest1);