提交 ff548773 编写于 作者: D David Howells

afs: Move UUID struct to linux/uuid.h

Move the afs_uuid struct to linux/uuid.h, rename it to uuid_v1 and change
the u16/u32 fields to __be16/__be32 instead so that the structure can be
cast to a 16-octet network-order buffer.
Signed-off-by: NDavid Howells <dhowells@redhat.com>
Reviewed-by: Arnd Bergmann <arnd@arndb.de
上级 a507c346
......@@ -351,7 +351,7 @@ static int afs_deliver_cb_init_call_back_state3(struct afs_call *call)
{
struct sockaddr_rxrpc srx;
struct afs_server *server;
struct afs_uuid *r;
struct uuid_v1 *r;
unsigned loop;
__be32 *b;
int ret;
......@@ -381,15 +381,15 @@ static int afs_deliver_cb_init_call_back_state3(struct afs_call *call)
}
_debug("unmarshall UUID");
call->request = kmalloc(sizeof(struct afs_uuid), GFP_KERNEL);
call->request = kmalloc(sizeof(struct uuid_v1), GFP_KERNEL);
if (!call->request)
return -ENOMEM;
b = call->buffer;
r = call->request;
r->time_low = ntohl(b[0]);
r->time_mid = ntohl(b[1]);
r->time_hi_and_version = ntohl(b[2]);
r->time_low = b[0];
r->time_mid = htons(ntohl(b[1]));
r->time_hi_and_version = htons(ntohl(b[2]));
r->clock_seq_hi_and_reserved = ntohl(b[3]);
r->clock_seq_low = ntohl(b[4]);
......@@ -454,7 +454,7 @@ static int afs_deliver_cb_probe(struct afs_call *call)
static void SRXAFSCB_ProbeUuid(struct work_struct *work)
{
struct afs_call *call = container_of(work, struct afs_call, work);
struct afs_uuid *r = call->request;
struct uuid_v1 *r = call->request;
struct {
__be32 match;
......@@ -477,7 +477,7 @@ static void SRXAFSCB_ProbeUuid(struct work_struct *work)
*/
static int afs_deliver_cb_probe_uuid(struct afs_call *call)
{
struct afs_uuid *r;
struct uuid_v1 *r;
unsigned loop;
__be32 *b;
int ret;
......@@ -503,15 +503,15 @@ static int afs_deliver_cb_probe_uuid(struct afs_call *call)
}
_debug("unmarshall UUID");
call->request = kmalloc(sizeof(struct afs_uuid), GFP_KERNEL);
call->request = kmalloc(sizeof(struct uuid_v1), GFP_KERNEL);
if (!call->request)
return -ENOMEM;
b = call->buffer;
r = call->request;
r->time_low = ntohl(b[0]);
r->time_mid = ntohl(b[1]);
r->time_hi_and_version = ntohl(b[2]);
r->time_low = b[0];
r->time_mid = htons(ntohl(b[1]));
r->time_hi_and_version = htons(ntohl(b[2]));
r->clock_seq_hi_and_reserved = ntohl(b[3]);
r->clock_seq_low = ntohl(b[4]);
......@@ -569,9 +569,9 @@ static void SRXAFSCB_TellMeAboutYourself(struct work_struct *work)
memset(&reply, 0, sizeof(reply));
reply.ia.nifs = htonl(nifs);
reply.ia.uuid[0] = htonl(afs_uuid.time_low);
reply.ia.uuid[1] = htonl(afs_uuid.time_mid);
reply.ia.uuid[2] = htonl(afs_uuid.time_hi_and_version);
reply.ia.uuid[0] = afs_uuid.time_low;
reply.ia.uuid[1] = htonl(ntohs(afs_uuid.time_mid));
reply.ia.uuid[2] = htonl(ntohs(afs_uuid.time_hi_and_version));
reply.ia.uuid[3] = htonl((s8) afs_uuid.clock_seq_hi_and_reserved);
reply.ia.uuid[4] = htonl((s8) afs_uuid.clock_seq_low);
for (loop = 0; loop < 6; loop++)
......
......@@ -19,6 +19,7 @@
#include <linux/sched.h>
#include <linux/fscache.h>
#include <linux/backing-dev.h>
#include <linux/uuid.h>
#include <net/af_rxrpc.h>
#include "afs.h"
......@@ -407,30 +408,6 @@ struct afs_interface {
unsigned mtu; /* MTU of interface */
};
/*
* UUID definition [internet draft]
* - the timestamp is a 60-bit value, split 32/16/12, and goes in 100ns
* increments since midnight 15th October 1582
* - add AFS_UUID_TO_UNIX_TIME to convert unix time in 100ns units to UUID
* time
* - the clock sequence is a 14-bit counter to avoid duplicate times
*/
struct afs_uuid {
u32 time_low; /* low part of timestamp */
u16 time_mid; /* mid part of timestamp */
u16 time_hi_and_version; /* high part of timestamp and version */
#define AFS_UUID_TO_UNIX_TIME 0x01b21dd213814000ULL
#define AFS_UUID_TIMEHI_MASK 0x0fff
#define AFS_UUID_VERSION_TIME 0x1000 /* time-based UUID */
#define AFS_UUID_VERSION_NAME 0x3000 /* name-based UUID */
#define AFS_UUID_VERSION_RANDOM 0x4000 /* (pseudo-)random generated UUID */
u8 clock_seq_hi_and_reserved; /* clock seq hi and variant */
#define AFS_UUID_CLOCKHI_MASK 0x3f
#define AFS_UUID_VARIANT_STD 0x80
u8 clock_seq_low; /* clock seq low */
u8 node[6]; /* spatially unique node ID (MAC addr) */
};
/*****************************************************************************/
/*
* cache.c
......@@ -565,7 +542,7 @@ extern int afs_drop_inode(struct inode *);
* main.c
*/
extern struct workqueue_struct *afs_wq;
extern struct afs_uuid afs_uuid;
extern struct uuid_v1 afs_uuid;
/*
* misc.c
......
......@@ -31,7 +31,7 @@ static char *rootcell;
module_param(rootcell, charp, 0);
MODULE_PARM_DESC(rootcell, "root AFS cell name and VL server IP addr list");
struct afs_uuid afs_uuid;
struct uuid_v1 afs_uuid;
struct workqueue_struct *afs_wq;
/*
......@@ -41,7 +41,7 @@ static int __init afs_get_client_UUID(void)
{
struct timespec ts;
u64 uuidtime;
u16 clockseq;
u16 clockseq, hi_v;
int ret;
/* read the MAC address of one of the external interfaces and construct
......@@ -53,22 +53,23 @@ static int __init afs_get_client_UUID(void)
getnstimeofday(&ts);
uuidtime = (u64) ts.tv_sec * 1000 * 1000 * 10;
uuidtime += ts.tv_nsec / 100;
uuidtime += AFS_UUID_TO_UNIX_TIME;
afs_uuid.time_low = uuidtime;
afs_uuid.time_mid = uuidtime >> 32;
afs_uuid.time_hi_and_version = (uuidtime >> 48) & AFS_UUID_TIMEHI_MASK;
afs_uuid.time_hi_and_version |= AFS_UUID_VERSION_TIME;
uuidtime += UUID_TO_UNIX_TIME;
afs_uuid.time_low = htonl(uuidtime);
afs_uuid.time_mid = htons(uuidtime >> 32);
hi_v = (uuidtime >> 48) & UUID_TIMEHI_MASK;
hi_v |= UUID_VERSION_TIME;
afs_uuid.time_hi_and_version = htons(hi_v);
get_random_bytes(&clockseq, 2);
afs_uuid.clock_seq_low = clockseq;
afs_uuid.clock_seq_hi_and_reserved =
(clockseq >> 8) & AFS_UUID_CLOCKHI_MASK;
afs_uuid.clock_seq_hi_and_reserved |= AFS_UUID_VARIANT_STD;
(clockseq >> 8) & UUID_CLOCKHI_MASK;
afs_uuid.clock_seq_hi_and_reserved |= UUID_VARIANT_STD;
_debug("AFS UUID: %08x-%04x-%04x-%02x%02x-%02x%02x%02x%02x%02x%02x",
afs_uuid.time_low,
afs_uuid.time_mid,
afs_uuid.time_hi_and_version,
ntohl(afs_uuid.time_low),
ntohs(afs_uuid.time_mid),
ntohs(afs_uuid.time_hi_and_version),
afs_uuid.clock_seq_hi_and_reserved,
afs_uuid.clock_seq_low,
afs_uuid.node[0], afs_uuid.node[1], afs_uuid.node[2],
......
......@@ -18,6 +18,30 @@
#include <uapi/linux/uuid.h>
/*
* V1 (time-based) UUID definition [RFC 4122].
* - the timestamp is a 60-bit value, split 32/16/12, and goes in 100ns
* increments since midnight 15th October 1582
* - add AFS_UUID_TO_UNIX_TIME to convert unix time in 100ns units to UUID
* time
* - the clock sequence is a 14-bit counter to avoid duplicate times
*/
struct uuid_v1 {
__be32 time_low; /* low part of timestamp */
__be16 time_mid; /* mid part of timestamp */
__be16 time_hi_and_version; /* high part of timestamp and version */
#define UUID_TO_UNIX_TIME 0x01b21dd213814000ULL
#define UUID_TIMEHI_MASK 0x0fff
#define UUID_VERSION_TIME 0x1000 /* time-based UUID */
#define UUID_VERSION_NAME 0x3000 /* name-based UUID */
#define UUID_VERSION_RANDOM 0x4000 /* (pseudo-)random generated UUID */
u8 clock_seq_hi_and_reserved; /* clock seq hi and variant */
#define UUID_CLOCKHI_MASK 0x3f
#define UUID_VARIANT_STD 0x80
u8 clock_seq_low; /* clock seq low */
u8 node[6]; /* spatially unique node ID (MAC addr) */
};
/*
* The length of a UUID string ("aaaaaaaa-bbbb-cccc-dddd-eeeeeeeeeeee")
* not including trailing NUL.
......
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