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Commit ff548773 authored by David Howells's avatar David Howells
Browse files

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: default avatarDavid Howells <dhowells@redhat.com>
Reviewed-by: default avatarArnd Bergmann <arnd@arndb.de>
parent a507c346

fs/afs/cmservice.c

+14 −14
Original line number Diff line number Diff line
@@ -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++)

fs/afs/internal.h

+2 −25
Original line number Diff line number Diff line
@@ -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

fs/afs/main.c

+13 −12
Original line number Diff line number Diff line
@@ -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],

include/linux/uuid.h

+24 −0
Original line number Diff line number Diff line
@@ -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.