sys/kern/kern_uuid.c

42 #include <sys/uuid.h>
58 CTASSERT(sizeof(struct uuid) == 16);
131 struct uuid *
132 kern_uuidgen(struct uuid *store, size_t count)
134 	struct uuid_private uuid;
140 	uuid_node(uuid.node);
143 	if (uuid_last.time.ll == 0LL || uuid_last.node[0] != uuid.node[0] ||
144 	    uuid_last.node[1] != uuid.node[1] ||
145 	    uuid_last.node[2] != uuid.node[2])
146 		uuid.seq = (uint16_t)arc4random() & 0x3fff;
148 		uuid.seq = (uuid_last.seq + 1) & 0x3fff;
150 		uuid.seq = uuid_last.seq;
152 	uuid_last = uuid;
158 	uuid.seq = htobe16(uuid.seq | 0x8000);
162 		uuid.time.x.low = (uint32_t)time;
163 		uuid.time.x.mid = (uint16_t)(time >> 32);
164 		uuid.time.x.hi = ((uint16_t)(time >> 48) & 0xfff) | (1 << 12);
165 		store[n] = *(struct uuid *)&uuid;
174 	struct uuid *store;
181 	struct uuid *store;
195 	store = malloc(count * sizeof(struct uuid), M_TEMP, M_WAITOK);
197 	error = copyout(store, uap->store, count * sizeof(struct uuid));
273 snprintf_uuid(char *buf, size_t sz, struct uuid *uuid)
278 	id = (struct uuid_private *)uuid;
286 printf_uuid(struct uuid *uuid)
290 	snprintf_uuid(buf, sizeof(buf), uuid);
295 sbuf_printf_uuid(struct sbuf *sb, struct uuid *uuid)
299 	snprintf_uuid(buf, sizeof(buf), uuid);
321 le_uuid_enc(void *buf, struct uuid const *uuid)
327 	le32enc(p, uuid->time_low);
328 	le16enc(p + 4, uuid->time_mid);
329 	le16enc(p + 6, uuid->time_hi_and_version);
330 	p[8] = uuid->clock_seq_hi_and_reserved;
331 	p[9] = uuid->clock_seq_low;
333 		p[10 + i] = uuid->node[i];
337 le_uuid_dec(void const *buf, struct uuid *uuid)
343 	uuid->time_low = le32dec(p);
344 	uuid->time_mid = le16dec(p + 4);
345 	uuid->time_hi_and_version = le16dec(p + 6);
346 	uuid->clock_seq_hi_and_reserved = p[8];
347 	uuid->clock_seq_low = p[9];
349 		uuid->node[i] = p[10 + i];
353 be_uuid_enc(void *buf, struct uuid const *uuid)
359 	be32enc(p, uuid->time_low);
360 	be16enc(p + 4, uuid->time_mid);
361 	be16enc(p + 6, uuid->time_hi_and_version);
362 	p[8] = uuid->clock_seq_hi_and_reserved;
363 	p[9] = uuid->clock_seq_low;
365 		p[10 + i] = uuid->node[i];
369 be_uuid_dec(void const *buf, struct uuid *uuid)
375 	uuid->time_low = be32dec(p);
376 	uuid->time_mid = be16dec(p + 4);
377 	uuid->time_hi_and_version = be16dec(p + 6);
378 	uuid->clock_seq_hi_and_reserved = p[8];
379 	uuid->clock_seq_low = p[9];
381 		uuid->node[i] = p[10 + i];
385 validate_uuid(const char *str, size_t size, struct uuid *uuid, int flags)
393 			if (uuid != NULL)
394 				bzero(uuid, sizeof(*uuid));
422 	if (uuid != NULL) {
423 		uuid->time_low = c[0];
424 		uuid->time_mid = c[1];
425 		uuid->time_hi_and_version = c[2];
426 		uuid->clock_seq_hi_and_reserved = c[3];
427 		uuid->clock_seq_low = c[4];
429 			uuid->node[n] = c[n + 5];
443 parse_uuid(const char *str, struct uuid *uuid)
446 	return (validate_uuid(str, strlen(str), uuid, VUUIDF_PARSEFLAGS));
450 uuidcmp(const struct uuid *uuid1, const struct uuid *uuid2)
453 	return (memcmp(uuid1, uuid2, sizeof(struct uuid)));