sys/kern/kern_uuid.c

40 #include <sys/uuid.h>
56 CTASSERT(sizeof(struct uuid) == 16);
129 struct uuid *
130 kern_uuidgen(struct uuid *store, size_t count)
132 	struct uuid_private uuid;
138 	uuid_node(uuid.node);
141 	if (uuid_last.time.ll == 0LL || uuid_last.node[0] != uuid.node[0] ||
142 	    uuid_last.node[1] != uuid.node[1] ||
143 	    uuid_last.node[2] != uuid.node[2])
144 		uuid.seq = (uint16_t)arc4random() & 0x3fff;
146 		uuid.seq = (uuid_last.seq + 1) & 0x3fff;
148 		uuid.seq = uuid_last.seq;
150 	uuid_last = uuid;
156 	uuid.seq = htobe16(uuid.seq | 0x8000);
160 		uuid.time.x.low = (uint32_t)time;
161 		uuid.time.x.mid = (uint16_t)(time >> 32);
162 		uuid.time.x.hi = ((uint16_t)(time >> 48) & 0xfff) | (1 << 12);
163 		store[n] = *(struct uuid *)&uuid;
172 	struct uuid *store;
179 	struct uuid *store;
193 	store = malloc(count * sizeof(struct uuid), M_TEMP, M_WAITOK);
195 	error = copyout(store, uap->store, count * sizeof(struct uuid));
271 snprintf_uuid(char *buf, size_t sz, struct uuid *uuid)
276 	id = (struct uuid_private *)uuid;
284 printf_uuid(struct uuid *uuid)
288 	snprintf_uuid(buf, sizeof(buf), uuid);
293 sbuf_printf_uuid(struct sbuf *sb, struct uuid *uuid)
297 	snprintf_uuid(buf, sizeof(buf), uuid);
319 le_uuid_enc(void *buf, struct uuid const *uuid)
325 	le32enc(p, uuid->time_low);
326 	le16enc(p + 4, uuid->time_mid);
327 	le16enc(p + 6, uuid->time_hi_and_version);
328 	p[8] = uuid->clock_seq_hi_and_reserved;
329 	p[9] = uuid->clock_seq_low;
331 		p[10 + i] = uuid->node[i];
335 le_uuid_dec(void const *buf, struct uuid *uuid)
341 	uuid->time_low = le32dec(p);
342 	uuid->time_mid = le16dec(p + 4);
343 	uuid->time_hi_and_version = le16dec(p + 6);
344 	uuid->clock_seq_hi_and_reserved = p[8];
345 	uuid->clock_seq_low = p[9];
347 		uuid->node[i] = p[10 + i];
351 be_uuid_enc(void *buf, struct uuid const *uuid)
357 	be32enc(p, uuid->time_low);
358 	be16enc(p + 4, uuid->time_mid);
359 	be16enc(p + 6, uuid->time_hi_and_version);
360 	p[8] = uuid->clock_seq_hi_and_reserved;
361 	p[9] = uuid->clock_seq_low;
363 		p[10 + i] = uuid->node[i];
367 be_uuid_dec(void const *buf, struct uuid *uuid)
373 	uuid->time_low = be32dec(p);
374 	uuid->time_mid = be16dec(p + 4);
375 	uuid->time_hi_and_version = be16dec(p + 6);
376 	uuid->clock_seq_hi_and_reserved = p[8];
377 	uuid->clock_seq_low = p[9];
379 		uuid->node[i] = p[10 + i];
383 parse_uuid(const char *str, struct uuid *uuid)
390 		bzero(uuid, sizeof(*uuid));
414 	uuid->time_low = c[0];
415 	uuid->time_mid = c[1];
416 	uuid->time_hi_and_version = c[2];
417 	uuid->clock_seq_hi_and_reserved = c[3];
418 	uuid->clock_seq_low = c[4];
420 		uuid->node[n] = c[n + 5];