/*
 * Minimal replacement for wpa_supplicant's src/utils/common.h + the parts
 * of src/utils/os.h that wpa_ctrl.c (CONFIG_CTRL_IFACE_UNIX build path)
 * actually needs. Trivial os_* helpers are mapped directly onto libc via
 * macros (matching upstream's own os.h fallback definitions); the handful
 * that need a real body (os_zalloc, os_strlcpy, os_get_reltime, os_sleep)
 * are implemented in jl_wpa_os_shim.c.
 */

#ifndef JL_WPA_CTRL_COMMON_H
#define JL_WPA_CTRL_COMMON_H

typedef long os_time_t;

struct os_reltime {
	os_time_t sec;
	os_time_t usec;
};

void *os_zalloc(size_t size);
size_t os_strlcpy(char *dest, const char *src, size_t siz);
int os_get_reltime(struct os_reltime *t);
void os_sleep(os_time_t sec, os_time_t usec);

#define os_free(p) free((p))
#define os_memcmp(s1, s2, n) memcmp((s1), (s2), (n))
#define os_strncmp(s1, s2, n) strncmp((s1), (s2), (n))
#define os_snprintf snprintf

static inline int os_snprintf_error(size_t size, int res)
{
	return res < 0 || (unsigned int) res >= size;
}

static inline int os_reltime_before(struct os_reltime *a,
				     struct os_reltime *b)
{
	return (a->sec < b->sec) ||
	       (a->sec == b->sec && a->usec < b->usec);
}

static inline void os_reltime_sub(struct os_reltime *a, struct os_reltime *b,
				   struct os_reltime *res)
{
	res->sec = a->sec - b->sec;
	res->usec = a->usec - b->usec;
	if (res->usec < 0) {
		res->sec--;
		res->usec += 1000000;
	}
}

static inline int os_reltime_expired(struct os_reltime *now,
				      struct os_reltime *ts,
				      os_time_t timeout_secs)
{
	struct os_reltime age;

	os_reltime_sub(now, ts, &age);
	return (age.sec > timeout_secs) ||
	       (age.sec == timeout_secs && age.usec > 0);
}

#endif /* JL_WPA_CTRL_COMMON_H */