diff options
Diffstat (limited to 'fs/lockd/xdr.c')
| -rw-r--r-- | fs/lockd/xdr.c | 289 | 
1 files changed, 2 insertions, 287 deletions
diff --git a/fs/lockd/xdr.c b/fs/lockd/xdr.c index b583ab0a4cb..9340e7e10ef 100644 --- a/fs/lockd/xdr.c +++ b/fs/lockd/xdr.c @@ -16,6 +16,8 @@  #include <linux/sunrpc/stats.h>  #include <linux/lockd/lockd.h> +#include <uapi/linux/nfs2.h> +  #define NLMDBG_FACILITY		NLMDBG_XDR @@ -149,37 +151,6 @@ nlm_decode_lock(__be32 *p, struct nlm_lock *lock)  }  /* - * Encode a lock as part of an NLM call - */ -static __be32 * -nlm_encode_lock(__be32 *p, struct nlm_lock *lock) -{ -	struct file_lock	*fl = &lock->fl; -	__s32			start, len; - -	if (!(p = xdr_encode_string(p, lock->caller)) -	 || !(p = nlm_encode_fh(p, &lock->fh)) -	 || !(p = nlm_encode_oh(p, &lock->oh))) -		return NULL; - -	if (fl->fl_start > NLM_OFFSET_MAX -	 || (fl->fl_end > NLM_OFFSET_MAX && fl->fl_end != OFFSET_MAX)) -		return NULL; - -	start = loff_t_to_s32(fl->fl_start); -	if (fl->fl_end == OFFSET_MAX) -		len = 0; -	else -		len = loff_t_to_s32(fl->fl_end - fl->fl_start + 1); - -	*p++ = htonl(lock->svid); -	*p++ = htonl(start); -	*p++ = htonl(len); - -	return p; -} - -/*   * Encode result of a TEST/TEST_MSG call   */  static __be32 * @@ -372,259 +343,3 @@ nlmsvc_encode_void(struct svc_rqst *rqstp, __be32 *p, void *dummy)  {  	return xdr_ressize_check(rqstp, p);  } - -/* - * Now, the client side XDR functions - */ -#ifdef NLMCLNT_SUPPORT_SHARES -static int -nlmclt_decode_void(struct rpc_rqst *req, u32 *p, void *ptr) -{ -	return 0; -} -#endif - -static int -nlmclt_encode_testargs(struct rpc_rqst *req, __be32 *p, nlm_args *argp) -{ -	struct nlm_lock	*lock = &argp->lock; - -	if (!(p = nlm_encode_cookie(p, &argp->cookie))) -		return -EIO; -	*p++ = (lock->fl.fl_type == F_WRLCK)? xdr_one : xdr_zero; -	if (!(p = nlm_encode_lock(p, lock))) -		return -EIO; -	req->rq_slen = xdr_adjust_iovec(req->rq_svec, p); -	return 0; -} - -static int -nlmclt_decode_testres(struct rpc_rqst *req, __be32 *p, struct nlm_res *resp) -{ -	if (!(p = nlm_decode_cookie(p, &resp->cookie))) -		return -EIO; -	resp->status = *p++; -	if (resp->status == nlm_lck_denied) { -		struct file_lock	*fl = &resp->lock.fl; -		u32			excl; -		s32			start, len, end; - -		memset(&resp->lock, 0, sizeof(resp->lock)); -		locks_init_lock(fl); -		excl = ntohl(*p++); -		resp->lock.svid = ntohl(*p++); -		fl->fl_pid = (pid_t)resp->lock.svid; -		if (!(p = nlm_decode_oh(p, &resp->lock.oh))) -			return -EIO; - -		fl->fl_flags = FL_POSIX; -		fl->fl_type  = excl? F_WRLCK : F_RDLCK; -		start = ntohl(*p++); -		len = ntohl(*p++); -		end = start + len - 1; - -		fl->fl_start = s32_to_loff_t(start); -		if (len == 0 || end < 0) -			fl->fl_end = OFFSET_MAX; -		else -			fl->fl_end = s32_to_loff_t(end); -	} -	return 0; -} - - -static int -nlmclt_encode_lockargs(struct rpc_rqst *req, __be32 *p, nlm_args *argp) -{ -	struct nlm_lock	*lock = &argp->lock; - -	if (!(p = nlm_encode_cookie(p, &argp->cookie))) -		return -EIO; -	*p++ = argp->block? xdr_one : xdr_zero; -	*p++ = (lock->fl.fl_type == F_WRLCK)? xdr_one : xdr_zero; -	if (!(p = nlm_encode_lock(p, lock))) -		return -EIO; -	*p++ = argp->reclaim? xdr_one : xdr_zero; -	*p++ = htonl(argp->state); -	req->rq_slen = xdr_adjust_iovec(req->rq_svec, p); -	return 0; -} - -static int -nlmclt_encode_cancargs(struct rpc_rqst *req, __be32 *p, nlm_args *argp) -{ -	struct nlm_lock	*lock = &argp->lock; - -	if (!(p = nlm_encode_cookie(p, &argp->cookie))) -		return -EIO; -	*p++ = argp->block? xdr_one : xdr_zero; -	*p++ = (lock->fl.fl_type == F_WRLCK)? xdr_one : xdr_zero; -	if (!(p = nlm_encode_lock(p, lock))) -		return -EIO; -	req->rq_slen = xdr_adjust_iovec(req->rq_svec, p); -	return 0; -} - -static int -nlmclt_encode_unlockargs(struct rpc_rqst *req, __be32 *p, nlm_args *argp) -{ -	struct nlm_lock	*lock = &argp->lock; - -	if (!(p = nlm_encode_cookie(p, &argp->cookie))) -		return -EIO; -	if (!(p = nlm_encode_lock(p, lock))) -		return -EIO; -	req->rq_slen = xdr_adjust_iovec(req->rq_svec, p); -	return 0; -} - -static int -nlmclt_encode_res(struct rpc_rqst *req, __be32 *p, struct nlm_res *resp) -{ -	if (!(p = nlm_encode_cookie(p, &resp->cookie))) -		return -EIO; -	*p++ = resp->status; -	req->rq_slen = xdr_adjust_iovec(req->rq_svec, p); -	return 0; -} - -static int -nlmclt_encode_testres(struct rpc_rqst *req, __be32 *p, struct nlm_res *resp) -{ -	if (!(p = nlm_encode_testres(p, resp))) -		return -EIO; -	req->rq_slen = xdr_adjust_iovec(req->rq_svec, p); -	return 0; -} - -static int -nlmclt_decode_res(struct rpc_rqst *req, __be32 *p, struct nlm_res *resp) -{ -	if (!(p = nlm_decode_cookie(p, &resp->cookie))) -		return -EIO; -	resp->status = *p++; -	return 0; -} - -#if (NLMCLNT_OHSIZE > XDR_MAX_NETOBJ) -#  error "NLM host name cannot be larger than XDR_MAX_NETOBJ!" -#endif - -/* - * Buffer requirements for NLM - */ -#define NLM_void_sz		0 -#define NLM_cookie_sz		1+XDR_QUADLEN(NLM_MAXCOOKIELEN) -#define NLM_caller_sz		1+XDR_QUADLEN(NLMCLNT_OHSIZE) -#define NLM_owner_sz		1+XDR_QUADLEN(NLMCLNT_OHSIZE) -#define NLM_fhandle_sz		1+XDR_QUADLEN(NFS2_FHSIZE) -#define NLM_lock_sz		3+NLM_caller_sz+NLM_owner_sz+NLM_fhandle_sz -#define NLM_holder_sz		4+NLM_owner_sz - -#define NLM_testargs_sz		NLM_cookie_sz+1+NLM_lock_sz -#define NLM_lockargs_sz		NLM_cookie_sz+4+NLM_lock_sz -#define NLM_cancargs_sz		NLM_cookie_sz+2+NLM_lock_sz -#define NLM_unlockargs_sz	NLM_cookie_sz+NLM_lock_sz - -#define NLM_testres_sz		NLM_cookie_sz+1+NLM_holder_sz -#define NLM_res_sz		NLM_cookie_sz+1 -#define NLM_norep_sz		0 - -/* - * For NLM, a void procedure really returns nothing - */ -#define nlmclt_decode_norep	NULL - -#define PROC(proc, argtype, restype)	\ -[NLMPROC_##proc] = {							\ -	.p_proc      = NLMPROC_##proc,					\ -	.p_encode    = (kxdrproc_t) nlmclt_encode_##argtype,		\ -	.p_decode    = (kxdrproc_t) nlmclt_decode_##restype,		\ -	.p_arglen    = NLM_##argtype##_sz,				\ -	.p_replen    = NLM_##restype##_sz,				\ -	.p_statidx   = NLMPROC_##proc,					\ -	.p_name      = #proc,						\ -	} - -static struct rpc_procinfo	nlm_procedures[] = { -    PROC(TEST,		testargs,	testres), -    PROC(LOCK,		lockargs,	res), -    PROC(CANCEL,	cancargs,	res), -    PROC(UNLOCK,	unlockargs,	res), -    PROC(GRANTED,	testargs,	res), -    PROC(TEST_MSG,	testargs,	norep), -    PROC(LOCK_MSG,	lockargs,	norep), -    PROC(CANCEL_MSG,	cancargs,	norep), -    PROC(UNLOCK_MSG,	unlockargs,	norep), -    PROC(GRANTED_MSG,	testargs,	norep), -    PROC(TEST_RES,	testres,	norep), -    PROC(LOCK_RES,	res,		norep), -    PROC(CANCEL_RES,	res,		norep), -    PROC(UNLOCK_RES,	res,		norep), -    PROC(GRANTED_RES,	res,		norep), -#ifdef NLMCLNT_SUPPORT_SHARES -    PROC(SHARE,		shareargs,	shareres), -    PROC(UNSHARE,	shareargs,	shareres), -    PROC(NM_LOCK,	lockargs,	res), -    PROC(FREE_ALL,	notify,		void), -#endif -}; - -static struct rpc_version	nlm_version1 = { -		.number		= 1, -		.nrprocs	= 16, -		.procs		= nlm_procedures, -}; - -static struct rpc_version	nlm_version3 = { -		.number		= 3, -		.nrprocs	= 24, -		.procs		= nlm_procedures, -}; - -static struct rpc_version *	nlm_versions[] = { -	[1] = &nlm_version1, -	[3] = &nlm_version3, -#ifdef 	CONFIG_LOCKD_V4 -	[4] = &nlm_version4, -#endif -}; - -static struct rpc_stat		nlm_stats; - -struct rpc_program		nlm_program = { -		.name		= "lockd", -		.number		= NLM_PROGRAM, -		.nrvers		= ARRAY_SIZE(nlm_versions), -		.version	= nlm_versions, -		.stats		= &nlm_stats, -}; - -#ifdef RPC_DEBUG -const char *nlmdbg_cookie2a(const struct nlm_cookie *cookie) -{ -	/* -	 * We can get away with a static buffer because we're only -	 * called with BKL held. -	 */ -	static char buf[2*NLM_MAXCOOKIELEN+1]; -	unsigned int i, len = sizeof(buf); -	char *p = buf; - -	len--;	/* allow for trailing \0 */ -	if (len < 3) -		return "???"; -	for (i = 0 ; i < cookie->len ; i++) { -		if (len < 2) { -			strcpy(p-3, "..."); -			break; -		} -		sprintf(p, "%02x", cookie->data[i]); -		p += 2; -		len -= 2; -	} -	*p = '\0'; - -	return buf; -} -#endif  | 
