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/* SPDX-License-Identifier: GPL-2.0 */
/*
* Shared generic netlink helpers for the acct selftests.
*/
#ifndef ACSELFTESTS_ACCT_NETLINK_HELPER_H
#define ACSELFTESTS_ACCT_NETLINK_HELPER_H
#include <stdbool.h>
#include <linux/netlink.h>
#ifndef NLA_ALIGNTO
#define NLA_ALIGNTO 4
#define NLA_ALIGN(len) (((len) + NLA_ALIGNTO - 1) & ~(NLA_ALIGNTO - 1))
#define NLA_HDRLEN ((int)NLA_ALIGN(sizeof(struct nlattr)))
#endif
/* Fail an individual test case instead of hanging the whole binary. */
#define ACCT_RCV_TIMEOUT_SEC 2
static inline void *nla_data(const struct nlattr *na)
{
return (void *)((char *)na + NLA_HDRLEN);
}
static inline bool nla_ok(const struct nlattr *na, int remaining)
{
return remaining >= (int)sizeof(*na) &&
na->nla_len >= sizeof(*na) &&
na->nla_len <= remaining;
}
static inline struct nlattr *nla_next(const struct nlattr *na, int *remaining)
{
int aligned_len = NLA_ALIGN(na->nla_len);
*remaining -= aligned_len;
return (struct nlattr *)((char *)na + aligned_len);
}
int netlink_open(void);
int send_request(int fd, void *buf, size_t len);
int get_family_id(int fd, const char *name);
#endif /* ACSELFTESTS_ACCT_NETLINK_HELPER_H */
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