Orange Pi5 kernel

^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   1) // SPDX-License-Identifier: GPL-2.0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   3)  * linux/fs/lockd/xdr4.c
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   4)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   5)  * XDR support for lockd and the lock client.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   6)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   7)  * Copyright (C) 1995, 1996 Olaf Kirch <okir@monad.swb.de>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   8)  * Copyright (C) 1999, Trond Myklebust <trond.myklebust@fys.uio.no>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   9)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  10) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  11) #include <linux/types.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  12) #include <linux/sched.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  13) #include <linux/nfs.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  14) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  15) #include <linux/sunrpc/xdr.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  16) #include <linux/sunrpc/clnt.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  17) #include <linux/sunrpc/svc.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  18) #include <linux/sunrpc/stats.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  19) #include <linux/lockd/lockd.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  20) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  21) #define NLMDBG_FACILITY		NLMDBG_XDR
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  22) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  23) static inline loff_t
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  24) s64_to_loff_t(__s64 offset)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  25) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  26) 	return (loff_t)offset;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  27) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  28) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  29) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  30) static inline s64
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  31) loff_t_to_s64(loff_t offset)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  32) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  33) 	s64 res;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  34) 	if (offset > NLM4_OFFSET_MAX)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  35) 		res = NLM4_OFFSET_MAX;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  36) 	else if (offset < -NLM4_OFFSET_MAX)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  37) 		res = -NLM4_OFFSET_MAX;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  38) 	else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  39) 		res = offset;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  40) 	return res;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  41) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  42) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  43) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  44)  * XDR functions for basic NLM types
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  45)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  46) static __be32 *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  47) nlm4_decode_cookie(__be32 *p, struct nlm_cookie *c)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  48) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  49) 	unsigned int	len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  50) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  51) 	len = ntohl(*p++);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  52) 	
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  53) 	if(len==0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  54) 	{
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  55) 		c->len=4;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  56) 		memset(c->data, 0, 4);	/* hockeypux brain damage */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  57) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  58) 	else if(len<=NLM_MAXCOOKIELEN)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  59) 	{
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  60) 		c->len=len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  61) 		memcpy(c->data, p, len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  62) 		p+=XDR_QUADLEN(len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  63) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  64) 	else 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  65) 	{
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  66) 		dprintk("lockd: bad cookie size %d (only cookies under "
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  67) 			"%d bytes are supported.)\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  68) 				len, NLM_MAXCOOKIELEN);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  69) 		return NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  70) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  71) 	return p;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  72) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  73) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  74) static __be32 *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  75) nlm4_encode_cookie(__be32 *p, struct nlm_cookie *c)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  76) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  77) 	*p++ = htonl(c->len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  78) 	memcpy(p, c->data, c->len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  79) 	p+=XDR_QUADLEN(c->len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  80) 	return p;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  81) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  82) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  83) static __be32 *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  84) nlm4_decode_fh(__be32 *p, struct nfs_fh *f)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  85) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  86) 	memset(f->data, 0, sizeof(f->data));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  87) 	f->size = ntohl(*p++);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  88) 	if (f->size > NFS_MAXFHSIZE) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  89) 		dprintk("lockd: bad fhandle size %d (should be <=%d)\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  90) 			f->size, NFS_MAXFHSIZE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  91) 		return NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  92) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  93)       	memcpy(f->data, p, f->size);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  94) 	return p + XDR_QUADLEN(f->size);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  95) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  96) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  97) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  98)  * Encode and decode owner handle
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  99)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) static __be32 *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) nlm4_decode_oh(__be32 *p, struct xdr_netobj *oh)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) 	return xdr_decode_netobj(p, oh);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) static __be32 *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) nlm4_decode_lock(__be32 *p, struct nlm_lock *lock)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) 	struct file_lock	*fl = &lock->fl;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) 	__u64			len, start;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) 	__s64			end;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) 	if (!(p = xdr_decode_string_inplace(p, &lock->caller,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) 					    &lock->len, NLM_MAXSTRLEN))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) 	 || !(p = nlm4_decode_fh(p, &lock->fh))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) 	 || !(p = nlm4_decode_oh(p, &lock->oh)))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) 		return NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) 	lock->svid  = ntohl(*p++);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) 	locks_init_lock(fl);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) 	fl->fl_flags = FL_POSIX;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) 	fl->fl_type  = F_RDLCK;		/* as good as anything else */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) 	p = xdr_decode_hyper(p, &start);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) 	p = xdr_decode_hyper(p, &len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) 	end = start + len - 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) 	fl->fl_start = s64_to_loff_t(start);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) 	if (len == 0 || end < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) 		fl->fl_end = OFFSET_MAX;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) 	else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) 		fl->fl_end = s64_to_loff_t(end);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) 	return p;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137)  * Encode result of a TEST/TEST_MSG call
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) static __be32 *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) nlm4_encode_testres(__be32 *p, struct nlm_res *resp)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) 	s64		start, len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) 	dprintk("xdr: before encode_testres (p %p resp %p)\n", p, resp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) 	if (!(p = nlm4_encode_cookie(p, &resp->cookie)))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) 		return NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) 	*p++ = resp->status;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) 	if (resp->status == nlm_lck_denied) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) 		struct file_lock	*fl = &resp->lock.fl;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) 		*p++ = (fl->fl_type == F_RDLCK)? xdr_zero : xdr_one;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) 		*p++ = htonl(resp->lock.svid);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) 		/* Encode owner handle. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) 		if (!(p = xdr_encode_netobj(p, &resp->lock.oh)))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) 			return NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) 		start = loff_t_to_s64(fl->fl_start);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) 		if (fl->fl_end == OFFSET_MAX)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) 			len = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) 		else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) 			len = loff_t_to_s64(fl->fl_end - fl->fl_start + 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) 		
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) 		p = xdr_encode_hyper(p, start);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) 		p = xdr_encode_hyper(p, len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) 		dprintk("xdr: encode_testres (status %u pid %d type %d start %Ld end %Ld)\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) 			resp->status, (int)resp->lock.svid, fl->fl_type,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) 			(long long)fl->fl_start,  (long long)fl->fl_end);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) 	dprintk("xdr: after encode_testres (p %p resp %p)\n", p, resp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) 	return p;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178)  * First, the server side XDR functions
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) int
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) nlm4svc_decode_testargs(struct svc_rqst *rqstp, __be32 *p)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) 	struct nlm_args *argp = rqstp->rq_argp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) 	u32	exclusive;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) 	if (!(p = nlm4_decode_cookie(p, &argp->cookie)))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) 		return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) 	exclusive = ntohl(*p++);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) 	if (!(p = nlm4_decode_lock(p, &argp->lock)))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) 		return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) 	if (exclusive)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) 		argp->lock.fl.fl_type = F_WRLCK;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) 	return xdr_argsize_check(rqstp, p);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) int
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) nlm4svc_encode_testres(struct svc_rqst *rqstp, __be32 *p)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) 	struct nlm_res *resp = rqstp->rq_resp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) 	if (!(p = nlm4_encode_testres(p, resp)))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) 		return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) 	return xdr_ressize_check(rqstp, p);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) int
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) nlm4svc_decode_lockargs(struct svc_rqst *rqstp, __be32 *p)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) 	struct nlm_args *argp = rqstp->rq_argp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) 	u32	exclusive;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) 	if (!(p = nlm4_decode_cookie(p, &argp->cookie)))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) 		return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) 	argp->block  = ntohl(*p++);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) 	exclusive    = ntohl(*p++);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) 	if (!(p = nlm4_decode_lock(p, &argp->lock)))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) 		return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) 	if (exclusive)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) 		argp->lock.fl.fl_type = F_WRLCK;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) 	argp->reclaim = ntohl(*p++);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) 	argp->state   = ntohl(*p++);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224) 	argp->monitor = 1;		/* monitor client by default */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) 	return xdr_argsize_check(rqstp, p);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229) int
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230) nlm4svc_decode_cancargs(struct svc_rqst *rqstp, __be32 *p)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) 	struct nlm_args *argp = rqstp->rq_argp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233) 	u32	exclusive;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235) 	if (!(p = nlm4_decode_cookie(p, &argp->cookie)))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236) 		return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237) 	argp->block = ntohl(*p++);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238) 	exclusive = ntohl(*p++);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239) 	if (!(p = nlm4_decode_lock(p, &argp->lock)))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240) 		return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241) 	if (exclusive)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242) 		argp->lock.fl.fl_type = F_WRLCK;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243) 	return xdr_argsize_check(rqstp, p);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246) int
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247) nlm4svc_decode_unlockargs(struct svc_rqst *rqstp, __be32 *p)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249) 	struct nlm_args *argp = rqstp->rq_argp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251) 	if (!(p = nlm4_decode_cookie(p, &argp->cookie))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252) 	 || !(p = nlm4_decode_lock(p, &argp->lock)))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253) 		return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254) 	argp->lock.fl.fl_type = F_UNLCK;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255) 	return xdr_argsize_check(rqstp, p);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258) int
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 259) nlm4svc_decode_shareargs(struct svc_rqst *rqstp, __be32 *p)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 260) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 261) 	struct nlm_args *argp = rqstp->rq_argp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 262) 	struct nlm_lock	*lock = &argp->lock;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 263) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 264) 	memset(lock, 0, sizeof(*lock));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 265) 	locks_init_lock(&lock->fl);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 266) 	lock->svid = ~(u32) 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 267) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 268) 	if (!(p = nlm4_decode_cookie(p, &argp->cookie))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 269) 	 || !(p = xdr_decode_string_inplace(p, &lock->caller,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 270) 					    &lock->len, NLM_MAXSTRLEN))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 271) 	 || !(p = nlm4_decode_fh(p, &lock->fh))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 272) 	 || !(p = nlm4_decode_oh(p, &lock->oh)))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 273) 		return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 274) 	argp->fsm_mode = ntohl(*p++);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 275) 	argp->fsm_access = ntohl(*p++);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 276) 	return xdr_argsize_check(rqstp, p);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 277) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 278) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 279) int
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 280) nlm4svc_encode_shareres(struct svc_rqst *rqstp, __be32 *p)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 281) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 282) 	struct nlm_res *resp = rqstp->rq_resp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 283) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 284) 	if (!(p = nlm4_encode_cookie(p, &resp->cookie)))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 285) 		return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 286) 	*p++ = resp->status;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 287) 	*p++ = xdr_zero;		/* sequence argument */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 288) 	return xdr_ressize_check(rqstp, p);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 289) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 290) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 291) int
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 292) nlm4svc_encode_res(struct svc_rqst *rqstp, __be32 *p)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 293) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 294) 	struct nlm_res *resp = rqstp->rq_resp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 295) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 296) 	if (!(p = nlm4_encode_cookie(p, &resp->cookie)))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 297) 		return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 298) 	*p++ = resp->status;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 299) 	return xdr_ressize_check(rqstp, p);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 300) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 301) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 302) int
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 303) nlm4svc_decode_notify(struct svc_rqst *rqstp, __be32 *p)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 304) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 305) 	struct nlm_args *argp = rqstp->rq_argp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 306) 	struct nlm_lock	*lock = &argp->lock;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 307) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 308) 	if (!(p = xdr_decode_string_inplace(p, &lock->caller,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 309) 					    &lock->len, NLM_MAXSTRLEN)))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 310) 		return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 311) 	argp->state = ntohl(*p++);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 312) 	return xdr_argsize_check(rqstp, p);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 313) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 314) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 315) int
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 316) nlm4svc_decode_reboot(struct svc_rqst *rqstp, __be32 *p)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 317) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 318) 	struct nlm_reboot *argp = rqstp->rq_argp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 319) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 320) 	if (!(p = xdr_decode_string_inplace(p, &argp->mon, &argp->len, SM_MAXSTRLEN)))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 321) 		return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 322) 	argp->state = ntohl(*p++);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 323) 	memcpy(&argp->priv.data, p, sizeof(argp->priv.data));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 324) 	p += XDR_QUADLEN(SM_PRIV_SIZE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 325) 	return xdr_argsize_check(rqstp, p);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 326) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 327) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 328) int
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 329) nlm4svc_decode_res(struct svc_rqst *rqstp, __be32 *p)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 330) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 331) 	struct nlm_res *resp = rqstp->rq_argp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 332) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 333) 	if (!(p = nlm4_decode_cookie(p, &resp->cookie)))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 334) 		return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 335) 	resp->status = *p++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 336) 	return xdr_argsize_check(rqstp, p);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 337) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 338) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 339) int
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 340) nlm4svc_decode_void(struct svc_rqst *rqstp, __be32 *p)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 341) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 342) 	return xdr_argsize_check(rqstp, p);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 343) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 344) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 345) int
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 346) nlm4svc_encode_void(struct svc_rqst *rqstp, __be32 *p)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 347) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 348) 	return xdr_ressize_check(rqstp, p);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 349) }