*/
#define DEBUG_SUBSYSTEM S_CLASS
-#ifdef __KERNEL__
-# include <linux/ctype.h>
-# include <linux/kernel.h>
-# include <linux/sched.h>
-# include <linux/smp_lock.h>
-#else
+#ifndef __KERNEL__
# include <liblustre.h>
#endif
-#include <linux/obd_support.h>
-#include <linux/obd_class.h>
-#include <linux/obd_ost.h>
+#include <obd_support.h>
+#include <obd_class.h>
struct uuid {
- __u32 time_low;
- __u16 time_mid;
- __u16 time_hi_and_version;
- __u16 clock_seq;
- __u8 node[6];
+ __u32 time_low;
+ __u16 time_mid;
+ __u16 time_hi_and_version;
+ __u16 clock_seq;
+ __u8 node[6];
};
static void uuid_unpack(class_uuid_t in, struct uuid *uu)
{
- __u8 *ptr = in;
- __u32 tmp;
+ __u8 *ptr = in;
+ __u32 tmp;
- tmp = *ptr++;
- tmp = (tmp << 8) | *ptr++;
- tmp = (tmp << 8) | *ptr++;
- tmp = (tmp << 8) | *ptr++;
- uu->time_low = tmp;
+ tmp = *ptr++;
+ tmp = (tmp << 8) | *ptr++;
+ tmp = (tmp << 8) | *ptr++;
+ tmp = (tmp << 8) | *ptr++;
+ uu->time_low = tmp;
- tmp = *ptr++;
- tmp = (tmp << 8) | *ptr++;
- uu->time_mid = tmp;
+ tmp = *ptr++;
+ tmp = (tmp << 8) | *ptr++;
+ uu->time_mid = tmp;
- tmp = *ptr++;
- tmp = (tmp << 8) | *ptr++;
- uu->time_hi_and_version = tmp;
+ tmp = *ptr++;
+ tmp = (tmp << 8) | *ptr++;
+ uu->time_hi_and_version = tmp;
- tmp = *ptr++;
- tmp = (tmp << 8) | *ptr++;
- uu->clock_seq = tmp;
+ tmp = *ptr++;
+ tmp = (tmp << 8) | *ptr++;
+ uu->clock_seq = tmp;
- memcpy(uu->node, ptr, 6);
+ memcpy(uu->node, ptr, 6);
}
#if 0
static void uuid_pack(struct uuid *uu, class_uuid_t ptr)
{
- __u32 tmp;
- unsigned char *out = ptr;
-
- tmp = uu->time_low;
- out[3] = (unsigned char) tmp;
- tmp >>= 8;
- out[2] = (unsigned char) tmp;
- tmp >>= 8;
- out[1] = (unsigned char) tmp;
- tmp >>= 8;
- out[0] = (unsigned char) tmp;
-
- tmp = uu->time_mid;
- out[5] = (unsigned char) tmp;
- tmp >>= 8;
- out[4] = (unsigned char) tmp;
-
- tmp = uu->time_hi_and_version;
- out[7] = (unsigned char) tmp;
- tmp >>= 8;
- out[6] = (unsigned char) tmp;
-
- tmp = uu->clock_seq;
- out[9] = (unsigned char) tmp;
- tmp >>= 8;
- out[8] = (unsigned char) tmp;
-
- memcpy(out+10, uu->node, 6);
+ __u32 tmp;
+ unsigned char *out = ptr;
+
+ tmp = uu->time_low;
+ out[3] = (unsigned char) tmp;
+ tmp >>= 8;
+ out[2] = (unsigned char) tmp;
+ tmp >>= 8;
+ out[1] = (unsigned char) tmp;
+ tmp >>= 8;
+ out[0] = (unsigned char) tmp;
+
+ tmp = uu->time_mid;
+ out[5] = (unsigned char) tmp;
+ tmp >>= 8;
+ out[4] = (unsigned char) tmp;
+
+ tmp = uu->time_hi_and_version;
+ out[7] = (unsigned char) tmp;
+ tmp >>= 8;
+ out[6] = (unsigned char) tmp;
+
+ tmp = uu->clock_seq;
+ out[9] = (unsigned char) tmp;
+ tmp >>= 8;
+ out[8] = (unsigned char) tmp;
+
+ memcpy(out+10, uu->node, 6);
}
int class_uuid_parse(struct obd_uuid in, class_uuid_t uu)
{
- struct uuid uuid;
- int i;
- char *cp, buf[3];
-
- if (strlen(in) != 36)
- return -1;
- for (i=0, cp = in; i <= 36; i++,cp++) {
- if ((i == 8) || (i == 13) || (i == 18) ||
- (i == 23))
- if (*cp == '-')
- continue;
- if (i== 36)
- if (*cp == 0)
- continue;
- if (!isxdigit(*cp))
- return -1;
- }
- uuid.time_low = simple_strtoul(in, NULL, 16);
- uuid.time_mid = simple_strtoul(in+9, NULL, 16);
- uuid.time_hi_and_version = simple_strtoul(in+14, NULL, 16);
- uuid.clock_seq = simple_strtoul(in+19, NULL, 16);
- cp = in+24;
- buf[2] = 0;
- for (i=0; i < 6; i++) {
- buf[0] = *cp++;
- buf[1] = *cp++;
- uuid.node[i] = simple_strtoul(buf, NULL, 16);
- }
-
- uuid_pack(&uuid, uu);
- return 0;
+ struct uuid uuid;
+ int i;
+ char *cp, buf[3];
+
+ if (strlen(in) != 36)
+ return -1;
+ for (i=0, cp = in; i <= 36; i++,cp++) {
+ if ((i == 8) || (i == 13) || (i == 18) ||
+ (i == 23))
+ if (*cp == '-')
+ continue;
+ if (i== 36)
+ if (*cp == 0)
+ continue;
+ if (!isxdigit(*cp))
+ return -1;
+ }
+ uuid.time_low = simple_strtoul(in, NULL, 16);
+ uuid.time_mid = simple_strtoul(in+9, NULL, 16);
+ uuid.time_hi_and_version = simple_strtoul(in+14, NULL, 16);
+ uuid.clock_seq = simple_strtoul(in+19, NULL, 16);
+ cp = in+24;
+ buf[2] = 0;
+ for (i=0; i < 6; i++) {
+ buf[0] = *cp++;
+ buf[1] = *cp++;
+ uuid.node[i] = simple_strtoul(buf, NULL, 16);
+ }
+
+ uuid_pack(&uuid, uu);
+ return 0;
}
#endif
-void class_uuid_unparse(class_uuid_t uu, struct obd_uuid *out)
-{
- struct uuid uuid;
-
- uuid_unpack(uu, &uuid);
- sprintf(out->uuid,
- "%08x-%04x-%04x-%02x%02x-%02x%02x%02x%02x%02x%02x",
- uuid.time_low, uuid.time_mid, uuid.time_hi_and_version,
- uuid.clock_seq >> 8, uuid.clock_seq & 0xFF,
- uuid.node[0], uuid.node[1], uuid.node[2],
- uuid.node[3], uuid.node[4], uuid.node[5]);
-}
-struct obd_device *client_tgtuuid2obd(struct obd_uuid *tgtuuid)
+void generate_random_uuid(unsigned char uuid_out[16]);
+
+/* We need to have some extra twiddling here because some systems have
+ * no random state when they start up. */
+void class_generate_random_uuid(class_uuid_t uuid)
{
- int i;
+ struct timeval t;
+ int *i, j, k;
+
+ LASSERT(sizeof(class_uuid_t) % sizeof(*i) == 0);
+
+ j = jiffies;
+ do_gettimeofday(&t);
+ k = t.tv_usec;
+
+ generate_random_uuid(uuid);
- for (i = 0; i < MAX_OBD_DEVICES; i++) {
- struct obd_device *obd = &obd_dev[i];
- if (obd->obd_type == NULL)
- continue;
- if ((strncmp(obd->obd_type->typ_name, LUSTRE_OSC_NAME,
- sizeof LUSTRE_OSC_NAME) == 0) ||
- (strncmp(obd->obd_type->typ_name, LUSTRE_MDC_NAME,
- sizeof LUSTRE_MDC_NAME) == 0)) {
- struct client_obd *cli = &obd->u.cli;
- struct obd_import *imp = cli->cl_import;
- if (strncmp(tgtuuid->uuid, imp->imp_target_uuid.uuid,
- sizeof(imp->imp_target_uuid)) == 0)
- return obd;
- }
+ for (i = (int *)uuid; (char *)i < (char *)uuid + sizeof(class_uuid_t); i++) {
+ *i ^= j ^ k;
+ j = ((j << 8) & 0xffffff00) | ((j >> 24) & 0x000000ff);
+ k = ((k >> 8) & 0x00ffffff) | ((k << 24) & 0xff000000);
}
+}
- return NULL;
+void class_uuid_unparse(class_uuid_t uu, struct obd_uuid *out)
+{
+ struct uuid uuid;
+
+ uuid_unpack(uu, &uuid);
+ sprintf(out->uuid,
+ "%08x-%04x-%04x-%02x%02x-%02x%02x%02x%02x%02x%02x",
+ uuid.time_low, uuid.time_mid, uuid.time_hi_and_version,
+ uuid.clock_seq >> 8, uuid.clock_seq & 0xFF,
+ uuid.node[0], uuid.node[1], uuid.node[2],
+ uuid.node[3], uuid.node[4], uuid.node[5]);
}
git://git.whamcloud.com / fs / lustre-release.git / blobdiff