static void print_counters(const struct nlattr *nest)
{
struct nlattr *tb[CTA_COUNTERS_MAX+1] = {};
mnl_attr_parse_nested(nest, parse_counters_cb, tb);
if (tb[CTA_COUNTERS_PACKETS]) {
printf("packets=%"PRIu64" ",
be64toh(mnl_attr_get_u64(tb[CTA_COUNTERS_PACKETS])));
}
if (tb[CTA_COUNTERS_BYTES]) {
printf("bytes=%"PRIu64" ",
be64toh(mnl_attr_get_u64(tb[CTA_COUNTERS_BYTES])));
}
}
static int
nfct_parse_counters(const struct nlattr *attr, struct nf_conntrack *ct,
int dir)
{
struct nlattr *tb[CTA_COUNTERS_MAX+1] = {};
if (mnl_attr_parse_nested(attr, nfct_parse_counters_attr_cb, tb) < 0)
return -1;
if (tb[CTA_COUNTERS_PACKETS] || tb[CTA_COUNTERS32_PACKETS]) {
if (tb[CTA_COUNTERS32_PACKETS]) {
ct->counters[dir].packets =
ntohl(mnl_attr_get_u32(tb[CTA_COUNTERS32_PACKETS]));
}
if (tb[CTA_COUNTERS_PACKETS]) {
ct->counters[dir].packets =
be64toh(mnl_attr_get_u64(tb[CTA_COUNTERS_PACKETS]));
}
switch(dir) {
case __DIR_ORIG:
set_bit(ATTR_ORIG_COUNTER_PACKETS, ct->head.set);
break;
case __DIR_REPL:
set_bit(ATTR_REPL_COUNTER_PACKETS, ct->head.set);
break;
}
}
if (tb[CTA_COUNTERS_BYTES] || tb[CTA_COUNTERS32_BYTES]) {
if (tb[CTA_COUNTERS32_BYTES]) {
ct->counters[dir].bytes =
ntohl(mnl_attr_get_u32(tb[CTA_COUNTERS32_BYTES]));
}
if (tb[CTA_COUNTERS_BYTES]) {
ct->counters[dir].bytes =
be64toh(mnl_attr_get_u64(tb[CTA_COUNTERS_BYTES]));
}
switch(dir) {
case __DIR_ORIG:
set_bit(ATTR_ORIG_COUNTER_BYTES, ct->head.set);
break;
case __DIR_REPL:
set_bit(ATTR_REPL_COUNTER_BYTES, ct->head.set);
break;
}
}
return 0;
}
static int res_print_summary(struct rd *rd, struct nlattr **tb)
{
struct nlattr *nla_table = tb[RDMA_NLDEV_ATTR_RES_SUMMARY];
struct nlattr *nla_entry;
const char *name;
uint64_t curr;
int err;
mnl_attr_for_each_nested(nla_entry, nla_table) {
struct nlattr *nla_line[RDMA_NLDEV_ATTR_MAX] = {};
char json_name[32];
err = mnl_attr_parse_nested(nla_entry, rd_attr_cb, nla_line);
if (err != MNL_CB_OK)
return -EINVAL;
if (!nla_line[RDMA_NLDEV_ATTR_RES_SUMMARY_ENTRY_NAME] ||
!nla_line[RDMA_NLDEV_ATTR_RES_SUMMARY_ENTRY_CURR]) {
return -EINVAL;
}
name = mnl_attr_get_str(nla_line[RDMA_NLDEV_ATTR_RES_SUMMARY_ENTRY_NAME]);
curr = mnl_attr_get_u64(nla_line[RDMA_NLDEV_ATTR_RES_SUMMARY_ENTRY_CURR]);
if (rd->json_output) {
snprintf(json_name, 32, "%s", name);
jsonw_lluint_field(rd->jw, json_name, curr);
} else {
pr_out("%s %"PRId64 " ", name, curr);
}
}
return 0;
}
static int link_mon_peer_list_cb(const struct nlmsghdr *nlh, void *data)
{
struct genlmsghdr *genl = mnl_nlmsg_get_payload(nlh);
struct nlattr *attrs[TIPC_NLA_MON_PEER_MAX + 1] = {};
struct nlattr *info[TIPC_NLA_MAX + 1] = {};
uint16_t member_cnt;
uint32_t applied;
uint32_t dom_gen;
uint64_t up_map;
char status[16];
char monitored[16];
mnl_attr_parse(nlh, sizeof(*genl), parse_attrs, info);
if (!info[TIPC_NLA_MON_PEER])
return MNL_CB_ERROR;
open_json_object(NULL);
mnl_attr_parse_nested(info[TIPC_NLA_MON_PEER], parse_attrs, attrs);
(attrs[TIPC_NLA_MON_PEER_LOCAL] || attrs[TIPC_NLA_MON_PEER_HEAD]) ?
strcpy(monitored, "direct") :
strcpy(monitored, "indirect");
attrs[TIPC_NLA_MON_PEER_UP] ?
strcpy(status, "up") :
strcpy(status, "down");
dom_gen = attrs[TIPC_NLA_MON_PEER_DOMGEN] ?
mnl_attr_get_u32(attrs[TIPC_NLA_MON_PEER_DOMGEN]) : 0;
link_mon_print_peer_state(mnl_attr_get_u32(attrs[TIPC_NLA_MON_PEER_ADDR]),
status, monitored, dom_gen);
applied = mnl_attr_get_u32(attrs[TIPC_NLA_MON_PEER_APPLIED]);
if (!applied)
goto exit;
up_map = mnl_attr_get_u64(attrs[TIPC_NLA_MON_PEER_UPMAP]);
member_cnt = mnl_attr_get_payload_len(attrs[TIPC_NLA_MON_PEER_MEMBERS]);
/* each tipc address occupies 4 bytes of payload, hence compensate it */
member_cnt /= sizeof(uint32_t);
link_mon_print_applied(applied, up_map);
link_mon_print_non_applied(applied, member_cnt, up_map,
mnl_attr_get_payload(attrs[TIPC_NLA_MON_PEER_MEMBERS]));
exit:
print_string(PRINT_FP, NULL, "\n", "");
close_json_object();
return MNL_CB_OK;
}
/**
* nfacct_nlmsg_parse_payload - set accounting object attributes from message
* \param nlh: netlink message that you want to use to add the payload.
* \param nfacct: pointer to a accounting object
*
* This function returns -1 in case that some mandatory attributes are
* missing. On sucess, it returns 0.
*/
int
nfacct_nlmsg_parse_payload(const struct nlmsghdr *nlh, struct nfacct *nfacct)
{
struct nlattr *tb[NFACCT_MAX+1] = {};
struct nfgenmsg *nfg = mnl_nlmsg_get_payload(nlh);
mnl_attr_parse(nlh, sizeof(*nfg), nfacct_nlmsg_parse_attr_cb, tb);
if (!tb[NFACCT_NAME] && !tb[NFACCT_PKTS] && !tb[NFACCT_BYTES])
return -1;
nfacct_attr_set_str(nfacct, NFACCT_ATTR_NAME,
mnl_attr_get_str(tb[NFACCT_NAME]));
nfacct_attr_set_u64(nfacct, NFACCT_ATTR_PKTS,
be64toh(mnl_attr_get_u64(tb[NFACCT_PKTS])));
nfacct_attr_set_u64(nfacct, NFACCT_ATTR_BYTES,
be64toh(mnl_attr_get_u64(tb[NFACCT_BYTES])));
return 0;
}
static int
nfct_parse_timestamp(const struct nlattr *attr, struct nf_conntrack *ct)
{
struct nlattr *tb[CTA_TIMESTAMP_MAX+1] = {};
if (mnl_attr_parse_nested(attr, nfct_parse_timestamp_attr_cb, tb) < 0)
return -1;
if (tb[CTA_TIMESTAMP_START]) {
ct->timestamp.start =
be64toh(mnl_attr_get_u64(tb[CTA_TIMESTAMP_START]));
set_bit(ATTR_TIMESTAMP_START, ct->head.set);
}
if (tb[CTA_TIMESTAMP_STOP]) {
ct->timestamp.stop =
be64toh(mnl_attr_get_u64(tb[CTA_TIMESTAMP_START]));
set_bit(ATTR_TIMESTAMP_STOP, ct->head.set);
}
return 0;
}
static int
nfct_parse_protoinfo_dccp(const struct nlattr *attr, struct nf_conntrack *ct)
{
struct nlattr *tb[CTA_PROTOINFO_DCCP_MAX+1] = {};
if (mnl_attr_parse_nested(attr, nfct_parse_pinfo_dccp_attr_cb, tb) < 0)
return -1;
if (tb[CTA_PROTOINFO_DCCP_STATE]) {
ct->protoinfo.dccp.state = mnl_attr_get_u8(tb[CTA_PROTOINFO_DCCP_STATE]);
set_bit(ATTR_DCCP_STATE, ct->head.set);
}
if (tb[CTA_PROTOINFO_DCCP_ROLE]) {
ct->protoinfo.dccp.role = mnl_attr_get_u8(tb[CTA_PROTOINFO_DCCP_ROLE]);
set_bit(ATTR_DCCP_ROLE, ct->head.set);
}
if (tb[CTA_PROTOINFO_DCCP_HANDSHAKE_SEQ]) {
ct->protoinfo.dccp.handshake_seq = be64toh(
mnl_attr_get_u64(tb[CTA_PROTOINFO_DCCP_HANDSHAKE_SEQ]));
set_bit(ATTR_DCCP_HANDSHAKE_SEQ, ct->head.set);
}
return 0;
}
static int res_pd_line(struct rd *rd, const char *name, int idx,
struct nlattr **nla_line)
{
uint32_t local_dma_lkey = 0, unsafe_global_rkey = 0;
char *comm = NULL;
uint32_t ctxn = 0;
uint32_t pid = 0;
uint32_t pdn = 0;
uint64_t users;
if (!nla_line[RDMA_NLDEV_ATTR_RES_USECNT] ||
(!nla_line[RDMA_NLDEV_ATTR_RES_PID] &&
!nla_line[RDMA_NLDEV_ATTR_RES_KERN_NAME])) {
return MNL_CB_ERROR;
}
if (nla_line[RDMA_NLDEV_ATTR_RES_LOCAL_DMA_LKEY])
local_dma_lkey = mnl_attr_get_u32(
nla_line[RDMA_NLDEV_ATTR_RES_LOCAL_DMA_LKEY]);
users = mnl_attr_get_u64(nla_line[RDMA_NLDEV_ATTR_RES_USECNT]);
if (rd_is_filtered_attr(rd, "users", users,
nla_line[RDMA_NLDEV_ATTR_RES_USECNT]))
goto out;
if (nla_line[RDMA_NLDEV_ATTR_RES_UNSAFE_GLOBAL_RKEY])
unsafe_global_rkey = mnl_attr_get_u32(
nla_line[RDMA_NLDEV_ATTR_RES_UNSAFE_GLOBAL_RKEY]);
if (nla_line[RDMA_NLDEV_ATTR_RES_PID]) {
pid = mnl_attr_get_u32(nla_line[RDMA_NLDEV_ATTR_RES_PID]);
comm = get_task_name(pid);
}
if (rd_is_filtered_attr(rd, "pid", pid,
nla_line[RDMA_NLDEV_ATTR_RES_PID]))
goto out;
if (nla_line[RDMA_NLDEV_ATTR_RES_CTXN])
ctxn = mnl_attr_get_u32(nla_line[RDMA_NLDEV_ATTR_RES_CTXN]);
if (rd_is_filtered_attr(rd, "ctxn", ctxn,
nla_line[RDMA_NLDEV_ATTR_RES_CTXN]))
goto out;
if (nla_line[RDMA_NLDEV_ATTR_RES_PDN])
pdn = mnl_attr_get_u32(nla_line[RDMA_NLDEV_ATTR_RES_PDN]);
if (rd_is_filtered_attr(rd, "pdn", pdn,
nla_line[RDMA_NLDEV_ATTR_RES_PDN]))
goto out;
if (nla_line[RDMA_NLDEV_ATTR_RES_KERN_NAME])
/* discard const from mnl_attr_get_str */
comm = (char *)mnl_attr_get_str(
nla_line[RDMA_NLDEV_ATTR_RES_KERN_NAME]);
if (rd->json_output)
jsonw_start_array(rd->jw);
print_dev(rd, idx, name);
res_print_uint(rd, "pdn", pdn, nla_line[RDMA_NLDEV_ATTR_RES_PDN]);
print_key(rd, "local_dma_lkey", local_dma_lkey,
nla_line[RDMA_NLDEV_ATTR_RES_LOCAL_DMA_LKEY]);
res_print_uint(rd, "users", users,
nla_line[RDMA_NLDEV_ATTR_RES_USECNT]);
print_key(rd, "unsafe_global_rkey", unsafe_global_rkey,
nla_line[RDMA_NLDEV_ATTR_RES_UNSAFE_GLOBAL_RKEY]);
res_print_uint(rd, "ctxn", ctxn, nla_line[RDMA_NLDEV_ATTR_RES_CTXN]);
res_print_uint(rd, "pid", pid, nla_line[RDMA_NLDEV_ATTR_RES_PID]);
print_comm(rd, comm, nla_line);
print_driver_table(rd, nla_line[RDMA_NLDEV_ATTR_DRIVER]);
newline(rd);
out: if (nla_line[RDMA_NLDEV_ATTR_RES_PID])
free(comm);
return MNL_CB_OK;
}
static int res_pd_parse_cb(const struct nlmsghdr *nlh, void *data)
{
struct nlattr *tb[RDMA_NLDEV_ATTR_MAX] = {};
struct nlattr *nla_table, *nla_entry;
struct rd *rd = data;
const char *name;
uint32_t idx;
mnl_attr_parse(nlh, 0, rd_attr_cb, tb);
if (!tb[RDMA_NLDEV_ATTR_DEV_INDEX] ||
!tb[RDMA_NLDEV_ATTR_DEV_NAME] ||
!tb[RDMA_NLDEV_ATTR_RES_PD])
return MNL_CB_ERROR;
name = mnl_attr_get_str(tb[RDMA_NLDEV_ATTR_DEV_NAME]);
idx = mnl_attr_get_u32(tb[RDMA_NLDEV_ATTR_DEV_INDEX]);
nla_table = tb[RDMA_NLDEV_ATTR_RES_PD];
mnl_attr_for_each_nested(nla_entry, nla_table) {
uint32_t local_dma_lkey = 0, unsafe_global_rkey = 0;
struct nlattr *nla_line[RDMA_NLDEV_ATTR_MAX] = {};
char *comm = NULL;
uint32_t pid = 0;
uint64_t users;
int err;
err = mnl_attr_parse_nested(nla_entry, rd_attr_cb, nla_line);
if (err != MNL_CB_OK)
return MNL_CB_ERROR;
if (!nla_line[RDMA_NLDEV_ATTR_RES_USECNT] ||
(!nla_line[RDMA_NLDEV_ATTR_RES_PID] &&
!nla_line[RDMA_NLDEV_ATTR_RES_KERN_NAME])) {
return MNL_CB_ERROR;
}
if (nla_line[RDMA_NLDEV_ATTR_RES_LOCAL_DMA_LKEY])
local_dma_lkey = mnl_attr_get_u32(
nla_line[RDMA_NLDEV_ATTR_RES_LOCAL_DMA_LKEY]);
users = mnl_attr_get_u64(nla_line[RDMA_NLDEV_ATTR_RES_USECNT]);
if (rd_check_is_filtered(rd, "users", users))
continue;
if (nla_line[RDMA_NLDEV_ATTR_RES_UNSAFE_GLOBAL_RKEY])
unsafe_global_rkey = mnl_attr_get_u32(
nla_line[RDMA_NLDEV_ATTR_RES_UNSAFE_GLOBAL_RKEY]);
if (nla_line[RDMA_NLDEV_ATTR_RES_PID]) {
pid = mnl_attr_get_u32(
nla_line[RDMA_NLDEV_ATTR_RES_PID]);
comm = get_task_name(pid);
}
if (rd_check_is_filtered(rd, "pid", pid))
continue;
if (nla_line[RDMA_NLDEV_ATTR_RES_KERN_NAME])
/* discard const from mnl_attr_get_str */
comm = (char *)mnl_attr_get_str(
nla_line[RDMA_NLDEV_ATTR_RES_KERN_NAME]);
if (rd->json_output)
jsonw_start_array(rd->jw);
print_dev(rd, idx, name);
if (nla_line[RDMA_NLDEV_ATTR_RES_LOCAL_DMA_LKEY])
print_key(rd, "local_dma_lkey", local_dma_lkey);
print_users(rd, users);
if (nla_line[RDMA_NLDEV_ATTR_RES_UNSAFE_GLOBAL_RKEY])
print_key(rd, "unsafe_global_rkey", unsafe_global_rkey);
print_pid(rd, pid);
print_comm(rd, comm, nla_line);
if (nla_line[RDMA_NLDEV_ATTR_RES_PID])
free(comm);
print_driver_table(rd, nla_line[RDMA_NLDEV_ATTR_DRIVER]);
newline(rd);
}
static int res_mr_parse_cb(const struct nlmsghdr *nlh, void *data)
{
struct nlattr *tb[RDMA_NLDEV_ATTR_MAX] = {};
struct nlattr *nla_table, *nla_entry;
struct rd *rd = data;
const char *name;
uint32_t idx;
mnl_attr_parse(nlh, 0, rd_attr_cb, tb);
if (!tb[RDMA_NLDEV_ATTR_DEV_INDEX] ||
!tb[RDMA_NLDEV_ATTR_DEV_NAME] ||
!tb[RDMA_NLDEV_ATTR_RES_MR])
return MNL_CB_ERROR;
name = mnl_attr_get_str(tb[RDMA_NLDEV_ATTR_DEV_NAME]);
idx = mnl_attr_get_u32(tb[RDMA_NLDEV_ATTR_DEV_INDEX]);
nla_table = tb[RDMA_NLDEV_ATTR_RES_MR];
mnl_attr_for_each_nested(nla_entry, nla_table) {
struct nlattr *nla_line[RDMA_NLDEV_ATTR_MAX] = {};
uint32_t rkey = 0, lkey = 0;
uint64_t iova = 0, mrlen;
char *comm = NULL;
uint32_t pid = 0;
int err;
err = mnl_attr_parse_nested(nla_entry, rd_attr_cb, nla_line);
if (err != MNL_CB_OK)
return MNL_CB_ERROR;
if (!nla_line[RDMA_NLDEV_ATTR_RES_MRLEN] ||
(!nla_line[RDMA_NLDEV_ATTR_RES_PID] &&
!nla_line[RDMA_NLDEV_ATTR_RES_KERN_NAME])) {
return MNL_CB_ERROR;
}
if (nla_line[RDMA_NLDEV_ATTR_RES_RKEY])
rkey = mnl_attr_get_u32(
nla_line[RDMA_NLDEV_ATTR_RES_RKEY]);
if (nla_line[RDMA_NLDEV_ATTR_RES_LKEY])
lkey = mnl_attr_get_u32(
nla_line[RDMA_NLDEV_ATTR_RES_LKEY]);
if (nla_line[RDMA_NLDEV_ATTR_RES_IOVA])
iova = mnl_attr_get_u64(
nla_line[RDMA_NLDEV_ATTR_RES_IOVA]);
mrlen = mnl_attr_get_u64(nla_line[RDMA_NLDEV_ATTR_RES_MRLEN]);
if (rd_check_is_filtered(rd, "mrlen", mrlen))
continue;
if (nla_line[RDMA_NLDEV_ATTR_RES_PID]) {
pid = mnl_attr_get_u32(
nla_line[RDMA_NLDEV_ATTR_RES_PID]);
comm = get_task_name(pid);
}
if (rd_check_is_filtered(rd, "pid", pid)) {
free(comm);
continue;
}
if (nla_line[RDMA_NLDEV_ATTR_RES_KERN_NAME])
/* discard const from mnl_attr_get_str */
comm = (char *)mnl_attr_get_str(
nla_line[RDMA_NLDEV_ATTR_RES_KERN_NAME]);
if (rd->json_output)
jsonw_start_array(rd->jw);
print_dev(rd, idx, name);
if (nla_line[RDMA_NLDEV_ATTR_RES_RKEY])
print_key(rd, "rkey", rkey);
if (nla_line[RDMA_NLDEV_ATTR_RES_LKEY])
print_key(rd, "lkey", lkey);
if (nla_line[RDMA_NLDEV_ATTR_RES_IOVA])
print_iova(rd, iova);
print_mrlen(rd, mrlen);
print_pid(rd, pid);
print_comm(rd, comm, nla_line);
if (nla_line[RDMA_NLDEV_ATTR_RES_PID])
free(comm);
print_driver_table(rd, nla_line[RDMA_NLDEV_ATTR_DRIVER]);
newline(rd);
}
return MNL_CB_OK;
}
static int res_cq_parse_cb(const struct nlmsghdr *nlh, void *data)
{
struct nlattr *tb[RDMA_NLDEV_ATTR_MAX] = {};
struct nlattr *nla_table, *nla_entry;
struct rd *rd = data;
const char *name;
uint32_t idx;
mnl_attr_parse(nlh, 0, rd_attr_cb, tb);
if (!tb[RDMA_NLDEV_ATTR_DEV_INDEX] ||
!tb[RDMA_NLDEV_ATTR_DEV_NAME] ||
!tb[RDMA_NLDEV_ATTR_RES_CQ])
return MNL_CB_ERROR;
name = mnl_attr_get_str(tb[RDMA_NLDEV_ATTR_DEV_NAME]);
idx = mnl_attr_get_u32(tb[RDMA_NLDEV_ATTR_DEV_INDEX]);
nla_table = tb[RDMA_NLDEV_ATTR_RES_CQ];
mnl_attr_for_each_nested(nla_entry, nla_table) {
struct nlattr *nla_line[RDMA_NLDEV_ATTR_MAX] = {};
char *comm = NULL;
uint32_t pid = 0;
uint8_t poll_ctx = 0;
uint64_t users;
uint32_t cqe;
int err;
err = mnl_attr_parse_nested(nla_entry, rd_attr_cb, nla_line);
if (err != MNL_CB_OK)
return MNL_CB_ERROR;
if (!nla_line[RDMA_NLDEV_ATTR_RES_CQE] ||
!nla_line[RDMA_NLDEV_ATTR_RES_USECNT] ||
(!nla_line[RDMA_NLDEV_ATTR_RES_PID] &&
!nla_line[RDMA_NLDEV_ATTR_RES_KERN_NAME])) {
return MNL_CB_ERROR;
}
cqe = mnl_attr_get_u32(nla_line[RDMA_NLDEV_ATTR_RES_CQE]);
users = mnl_attr_get_u64(nla_line[RDMA_NLDEV_ATTR_RES_USECNT]);
if (rd_check_is_filtered(rd, "users", users))
continue;
if (nla_line[RDMA_NLDEV_ATTR_RES_POLL_CTX]) {
poll_ctx = mnl_attr_get_u8(
nla_line[RDMA_NLDEV_ATTR_RES_POLL_CTX]);
if (rd_check_is_string_filtered(rd, "poll-ctx",
poll_ctx_to_str(poll_ctx)))
continue;
}
if (nla_line[RDMA_NLDEV_ATTR_RES_PID]) {
pid = mnl_attr_get_u32(
nla_line[RDMA_NLDEV_ATTR_RES_PID]);
comm = get_task_name(pid);
}
if (rd_check_is_filtered(rd, "pid", pid)) {
free(comm);
continue;
}
if (nla_line[RDMA_NLDEV_ATTR_RES_KERN_NAME])
/* discard const from mnl_attr_get_str */
comm = (char *)mnl_attr_get_str(
nla_line[RDMA_NLDEV_ATTR_RES_KERN_NAME]);
if (rd->json_output)
jsonw_start_array(rd->jw);
print_dev(rd, idx, name);
print_cqe(rd, cqe);
print_users(rd, users);
if (nla_line[RDMA_NLDEV_ATTR_RES_POLL_CTX])
print_poll_ctx(rd, poll_ctx);
print_pid(rd, pid);
print_comm(rd, comm, nla_line);
if (nla_line[RDMA_NLDEV_ATTR_RES_PID])
free(comm);
print_driver_table(rd, nla_line[RDMA_NLDEV_ATTR_DRIVER]);
newline(rd);
}
return MNL_CB_OK;
}
/* returns negative on error
* or returns remainded nlmsghdr length */
static int _unpack_nlmsg(const struct nlmsghdr *nlh,
const char *format, va_list ap)
{
struct nlattr *attr = mnl_nlmsg_get_payload(nlh);
int remains = (int)mnl_nlmsg_get_payload_len(nlh);
size_t len;
uint16_t atype, alen;
void *p;
while (*format != '\0' ) {
if (!mnl_attr_ok(attr, remains)) {
errno = EOVERFLOW;
return -1;
}
remains -= MY_NLATTR_HDRLEN;
atype = mnl_attr_get_type(attr);
alen = mnl_attr_get_payload_len(attr);
switch (*format) {
case 'B': /* byte */
if (atype != MNL_TYPE_U8 ||
alen != sizeof(uint8_t)) {
errno =EINVAL;
return -1;
}
*(va_arg(ap, uint8_t *)) = mnl_attr_get_u8(attr);
break;
case 'H': /* 2byte */
if (atype != MNL_TYPE_U16 ||
alen != sizeof(uint16_t)) {
errno = EINVAL;
return -1;
}
*(va_arg(ap, uint16_t *)) = mnl_attr_get_u16(attr);
break;
case 'I': /* 4byte */
if (atype != MNL_TYPE_U32 ||
alen != sizeof(uint32_t)) {
errno = EINVAL;
return -1;
}
*(va_arg(ap, uint32_t *)) = mnl_attr_get_u32(attr);
break;
case 'K': /* 8byte */
if (atype != MNL_TYPE_U64 ||
alen != sizeof(uint64_t)) {
errno = EINVAL;
return -1;
}
*(va_arg(ap, uint64_t *)) = mnl_attr_get_u64(attr);
break;
case 'p': /* pointer */
if (atype != MNL_TYPE_BINARY ||
alen != sizeof(void *)) {
errno = EINVAL;
return -1;
}
*(va_arg(ap, void **))
= *((void **)mnl_attr_get_payload(attr));
break;
case 'z': /* null string */
if (atype != MNL_TYPE_NUL_STRING) {
errno = EINVAL;
return -1;
}
p = va_arg(ap, void *);
if (*(format + 1) == '#') {
format++;
len = va_arg(ap, size_t);
if (alen > len) {
errno = EINVAL;
return -1;
}
}
strncpy(p, mnl_attr_get_payload(attr), alen);
break;
case 'y': /* bytes with size */
format++;
if (*format != '#') {
errno = EINVAL;
return -1;
}
p = va_arg(ap, void *);
len = va_arg(ap, size_t);
if (alen > len)
return -EINVAL;
memcpy(p, mnl_attr_get_payload(attr), alen);
break;
default:
errno =EINVAL;
return -1;
}
remains -= MY_ATTR_ALIGN(alen);
format++;
attr = mnl_attr_next(attr);
}
if (remains) {
errno = EMSGSIZE;
nurs_log(NURS_NOTICE, "unpack remains: %d\n", remains);
}
return remains;
}
