[GitHub/mt8127/android_kernel_alcatel_ttab.git] / fs / nfsd / nfs2acl.c

/*
 * Process version 2 NFSACL requests.
 *
 * Copyright (C) 2002-2003 Andreas Gruenbacher <agruen@suse.de>
 */

#include "nfsd.h"
/* FIXME: nfsacl.h is a broken header */
#include <linux/nfsacl.h>
#include <linux/gfp.h>
#include "cache.h"
#include "xdr3.h"
#include "vfs.h"

#define NFSDDBG_FACILITY		NFSDDBG_PROC
#define RETURN_STATUS(st)	{ resp->status = (st); return (st); }

/*
 * NULL call.
 */
static __be32
nfsacld_proc_null(struct svc_rqst *rqstp, void *argp, void *resp)
{
	return nfs_ok;
}

/*
 * Get the Access and/or Default ACL of a file.
 */
static __be32 nfsacld_proc_getacl(struct svc_rqst * rqstp,
		struct nfsd3_getaclargs *argp, struct nfsd3_getaclres *resp)
{
	svc_fh *fh;
	struct posix_acl *acl;
	__be32 nfserr = 0;

	dprintk("nfsd: GETACL(2acl)   %s\n", SVCFH_fmt(&argp->fh));

	fh = fh_copy(&resp->fh, &argp->fh);
	nfserr = fh_verify(rqstp, &resp->fh, 0, NFSD_MAY_NOP);
	if (nfserr)
		RETURN_STATUS(nfserr);

	if (argp->mask & ~(NFS_ACL|NFS_ACLCNT|NFS_DFACL|NFS_DFACLCNT))
		RETURN_STATUS(nfserr_inval);
	resp->mask = argp->mask;

	nfserr = fh_getattr(fh, &resp->stat);
	if (nfserr)
		goto fail;

	if (resp->mask & (NFS_ACL|NFS_ACLCNT)) {
		acl = nfsd_get_posix_acl(fh, ACL_TYPE_ACCESS);
		if (IS_ERR(acl)) {
			int err = PTR_ERR(acl);

			if (err == -ENODATA || err == -EOPNOTSUPP)
				acl = NULL;
			else {
				nfserr = nfserrno(err);
				goto fail;
			}
		}
		if (acl == NULL) {
			/* Solaris returns the inode's minimum ACL. */

			struct inode *inode = fh->fh_dentry->d_inode;
			acl = posix_acl_from_mode(inode->i_mode, GFP_KERNEL);
		}
		resp->acl_access = acl;
	}
	if (resp->mask & (NFS_DFACL|NFS_DFACLCNT)) {
		/* Check how Solaris handles requests for the Default ACL
		   of a non-directory! */

		acl = nfsd_get_posix_acl(fh, ACL_TYPE_DEFAULT);
		if (IS_ERR(acl)) {
			int err = PTR_ERR(acl);

			if (err == -ENODATA || err == -EOPNOTSUPP)
				acl = NULL;
			else {
				nfserr = nfserrno(err);
				goto fail;
			}
		}
		resp->acl_default = acl;
	}

	/* resp->acl_{access,default} are released in nfssvc_release_getacl. */
	RETURN_STATUS(0);

fail:
	posix_acl_release(resp->acl_access);
	posix_acl_release(resp->acl_default);
	RETURN_STATUS(nfserr);
}

/*
 * Set the Access and/or Default ACL of a file.
 */
static __be32 nfsacld_proc_setacl(struct svc_rqst * rqstp,
		struct nfsd3_setaclargs *argp,
		struct nfsd_attrstat *resp)
{
	svc_fh *fh;
	__be32 nfserr = 0;

	dprintk("nfsd: SETACL(2acl)   %s\n", SVCFH_fmt(&argp->fh));

	fh = fh_copy(&resp->fh, &argp->fh);
	nfserr = fh_verify(rqstp, &resp->fh, 0, NFSD_MAY_SATTR);

	if (!nfserr) {
		nfserr = nfserrno( nfsd_set_posix_acl(
			fh, ACL_TYPE_ACCESS, argp->acl_access) );
	}
	if (!nfserr) {
		nfserr = nfserrno( nfsd_set_posix_acl(
			fh, ACL_TYPE_DEFAULT, argp->acl_default) );
	}
	if (!nfserr) {
		nfserr = fh_getattr(fh, &resp->stat);
	}

	/* argp->acl_{access,default} may have been allocated in
	   nfssvc_decode_setaclargs. */
	posix_acl_release(argp->acl_access);
	posix_acl_release(argp->acl_default);
	return nfserr;
}

/*
 * Check file attributes
 */
static __be32 nfsacld_proc_getattr(struct svc_rqst * rqstp,
		struct nfsd_fhandle *argp, struct nfsd_attrstat *resp)
{
	__be32 nfserr;
	dprintk("nfsd: GETATTR  %s\n", SVCFH_fmt(&argp->fh));

	fh_copy(&resp->fh, &argp->fh);
	nfserr = fh_verify(rqstp, &resp->fh, 0, NFSD_MAY_NOP);
	if (nfserr)
		return nfserr;
	nfserr = fh_getattr(&resp->fh, &resp->stat);
	return nfserr;
}

/*
 * Check file access
 */
static __be32 nfsacld_proc_access(struct svc_rqst *rqstp, struct nfsd3_accessargs *argp,
		struct nfsd3_accessres *resp)
{
	__be32 nfserr;

	dprintk("nfsd: ACCESS(2acl)   %s 0x%x\n",
			SVCFH_fmt(&argp->fh),
			argp->access);

	fh_copy(&resp->fh, &argp->fh);
	resp->access = argp->access;
	nfserr = nfsd_access(rqstp, &resp->fh, &resp->access, NULL);
	if (nfserr)
		return nfserr;
	nfserr = fh_getattr(&resp->fh, &resp->stat);
	return nfserr;
}

/*
 * XDR decode functions
 */
static int nfsaclsvc_decode_getaclargs(struct svc_rqst *rqstp, __be32 *p,
		struct nfsd3_getaclargs *argp)
{
	if (!(p = nfs2svc_decode_fh(p, &argp->fh)))
		return 0;
	argp->mask = ntohl(*p); p++;

	return xdr_argsize_check(rqstp, p);
}


static int nfsaclsvc_decode_setaclargs(struct svc_rqst *rqstp, __be32 *p,
		struct nfsd3_setaclargs *argp)
{
	struct kvec *head = rqstp->rq_arg.head;
	unsigned int base;
	int n;

	if (!(p = nfs2svc_decode_fh(p, &argp->fh)))
		return 0;
	argp->mask = ntohl(*p++);
	if (argp->mask & ~(NFS_ACL|NFS_ACLCNT|NFS_DFACL|NFS_DFACLCNT) ||
	    !xdr_argsize_check(rqstp, p))
		return 0;

	base = (char *)p - (char *)head->iov_base;
	n = nfsacl_decode(&rqstp->rq_arg, base, NULL,
			  (argp->mask & NFS_ACL) ?
			  &argp->acl_access : NULL);
	if (n > 0)
		n = nfsacl_decode(&rqstp->rq_arg, base + n, NULL,
				  (argp->mask & NFS_DFACL) ?
				  &argp->acl_default : NULL);
	return (n > 0);
}

static int nfsaclsvc_decode_fhandleargs(struct svc_rqst *rqstp, __be32 *p,
		struct nfsd_fhandle *argp)
{
	if (!(p = nfs2svc_decode_fh(p, &argp->fh)))
		return 0;
	return xdr_argsize_check(rqstp, p);
}

static int nfsaclsvc_decode_accessargs(struct svc_rqst *rqstp, __be32 *p,
		struct nfsd3_accessargs *argp)
{
	if (!(p = nfs2svc_decode_fh(p, &argp->fh)))
		return 0;
	argp->access = ntohl(*p++);

	return xdr_argsize_check(rqstp, p);
}

/*
 * XDR encode functions
 */

/*
 * There must be an encoding function for void results so svc_process
 * will work properly.
 */
static int nfsaclsvc_encode_voidres(struct svc_rqst *rqstp, __be32 *p, void *dummy)
{
	return xdr_ressize_check(rqstp, p);
}

/* GETACL */
static int nfsaclsvc_encode_getaclres(struct svc_rqst *rqstp, __be32 *p,
		struct nfsd3_getaclres *resp)
{
	struct dentry *dentry = resp->fh.fh_dentry;
	struct inode *inode;
	struct kvec *head = rqstp->rq_res.head;
	unsigned int base;
	int n;
	int w;

	/*
	 * Since this is version 2, the check for nfserr in
	 * nfsd_dispatch actually ensures the following cannot happen.
	 * However, it seems fragile to depend on that.
	 */
	if (dentry == NULL || dentry->d_inode == NULL)
		return 0;
	inode = dentry->d_inode;

	p = nfs2svc_encode_fattr(rqstp, p, &resp->fh, &resp->stat);
	*p++ = htonl(resp->mask);
	if (!xdr_ressize_check(rqstp, p))
		return 0;
	base = (char *)p - (char *)head->iov_base;

	rqstp->rq_res.page_len = w = nfsacl_size(
		(resp->mask & NFS_ACL)   ? resp->acl_access  : NULL,
		(resp->mask & NFS_DFACL) ? resp->acl_default : NULL);
	while (w > 0) {
		if (!*(rqstp->rq_next_page++))
			return 0;
		w -= PAGE_SIZE;
	}

	n = nfsacl_encode(&rqstp->rq_res, base, inode,
			  resp->acl_access,
			  resp->mask & NFS_ACL, 0);
	if (n > 0)
		n = nfsacl_encode(&rqstp->rq_res, base + n, inode,
				  resp->acl_default,
				  resp->mask & NFS_DFACL,
				  NFS_ACL_DEFAULT);
	if (n <= 0)
		return 0;
	return 1;
}

static int nfsaclsvc_encode_attrstatres(struct svc_rqst *rqstp, __be32 *p,
		struct nfsd_attrstat *resp)
{
	p = nfs2svc_encode_fattr(rqstp, p, &resp->fh, &resp->stat);
	return xdr_ressize_check(rqstp, p);
}

/* ACCESS */
static int nfsaclsvc_encode_accessres(struct svc_rqst *rqstp, __be32 *p,
		struct nfsd3_accessres *resp)
{
	p = nfs2svc_encode_fattr(rqstp, p, &resp->fh, &resp->stat);
	*p++ = htonl(resp->access);
	return xdr_ressize_check(rqstp, p);
}

/*
 * XDR release functions
 */
static int nfsaclsvc_release_getacl(struct svc_rqst *rqstp, __be32 *p,
		struct nfsd3_getaclres *resp)
{
	fh_put(&resp->fh);
	posix_acl_release(resp->acl_access);
	posix_acl_release(resp->acl_default);
	return 1;
}

static int nfsaclsvc_release_attrstat(struct svc_rqst *rqstp, __be32 *p,
		struct nfsd_attrstat *resp)
{
	fh_put(&resp->fh);
	return 1;
}

static int nfsaclsvc_release_access(struct svc_rqst *rqstp, __be32 *p,
               struct nfsd3_accessres *resp)
{
       fh_put(&resp->fh);
       return 1;
}

#define nfsaclsvc_decode_voidargs	NULL
#define nfsaclsvc_release_void		NULL
#define nfsd3_fhandleargs	nfsd_fhandle
#define nfsd3_attrstatres	nfsd_attrstat
#define nfsd3_voidres		nfsd3_voidargs
struct nfsd3_voidargs { int dummy; };

#define PROC(name, argt, rest, relt, cache, respsize)	\
 { (svc_procfunc) nfsacld_proc_##name,		\
   (kxdrproc_t) nfsaclsvc_decode_##argt##args,	\
   (kxdrproc_t) nfsaclsvc_encode_##rest##res,	\
   (kxdrproc_t) nfsaclsvc_release_##relt,		\
   sizeof(struct nfsd3_##argt##args),		\
   sizeof(struct nfsd3_##rest##res),		\
   0,						\
   cache,					\
   respsize,					\
 }

#define ST 1		/* status*/
#define AT 21		/* attributes */
#define pAT (1+AT)	/* post attributes - conditional */
#define ACL (1+NFS_ACL_MAX_ENTRIES*3)  /* Access Control List */

static struct svc_procedure		nfsd_acl_procedures2[] = {
  PROC(null,	void,		void,		void,	  RC_NOCACHE, ST),
  PROC(getacl,	getacl,		getacl,		getacl,	  RC_NOCACHE, ST+1+2*(1+ACL)),
  PROC(setacl,	setacl,		attrstat,	attrstat, RC_NOCACHE, ST+AT),
  PROC(getattr, fhandle,	attrstat,	attrstat, RC_NOCACHE, ST+AT),
  PROC(access,	access,		access,		access,   RC_NOCACHE, ST+AT+1),
};

struct svc_version	nfsd_acl_version2 = {
		.vs_vers	= 2,
		.vs_nproc	= 5,
		.vs_proc	= nfsd_acl_procedures2,
		.vs_dispatch	= nfsd_dispatch,
		.vs_xdrsize	= NFS3_SVC_XDRSIZE,
		.vs_hidden	= 0,
};
Commit	Line	Data
a257cdd0	1	/*
a257cdd0 AG	2	* Process version 2 NFSACL requests.
	3	*
	4	* Copyright (C) 2002-2003 Andreas Gruenbacher <agruen@suse.de>
	5	*/
	6
9a74af21 BH	7	#include "nfsd.h"
9a74af21 BH	8	/* FIXME: nfsacl.h is a broken header */
a257cdd0	9	#include <linux/nfsacl.h>
5a0e3ad6	10	#include <linux/gfp.h>
9a74af21 BH	11	#include "cache.h"
9a74af21 BH	12	#include "xdr3.h"
0a3adade	13	#include "vfs.h"
a257cdd0 AG	14
	15	#define NFSDDBG_FACILITY NFSDDBG_PROC
	16	#define RETURN_STATUS(st) { resp->status = (st); return (st); }
	17
	18	/*
	19	* NULL call.
	20	*/
7111c66e	21	static __be32
a257cdd0 AG	22	nfsacld_proc_null(struct svc_rqst rqstp, void argp, void *resp)
	23	{
	24	return nfs_ok;
	25	}
	26
	27	/*
	28	* Get the Access and/or Default ACL of a file.
	29	*/
7111c66e	30	static __be32 nfsacld_proc_getacl(struct svc_rqst * rqstp,
a257cdd0 AG	31	struct nfsd3_getaclargs argp, struct nfsd3_getaclres resp)
	32	{
	33	svc_fh *fh;
	34	struct posix_acl *acl;
c4d987ba	35	__be32 nfserr = 0;
a257cdd0 AG	36
	37	dprintk("nfsd: GETACL(2acl) %s\n", SVCFH_fmt(&argp->fh));
	38
	39	fh = fh_copy(&resp->fh, &argp->fh);
8837abca MS	40	nfserr = fh_verify(rqstp, &resp->fh, 0, NFSD_MAY_NOP);
8837abca MS	41	if (nfserr)
ac8587dc	42	RETURN_STATUS(nfserr);
a257cdd0 AG	43
	44	if (argp->mask & ~(NFS_ACL\|NFS_ACLCNT\|NFS_DFACL\|NFS_DFACLCNT))
	45	RETURN_STATUS(nfserr_inval);
	46	resp->mask = argp->mask;
	47
4f4a4fad BF	48	nfserr = fh_getattr(fh, &resp->stat);
	49	if (nfserr)
	50	goto fail;
	51
a257cdd0 AG	52	if (resp->mask & (NFS_ACL\|NFS_ACLCNT)) {
	53	acl = nfsd_get_posix_acl(fh, ACL_TYPE_ACCESS);
	54	if (IS_ERR(acl)) {
	55	int err = PTR_ERR(acl);
	56
	57	if (err == -ENODATA \|\| err == -EOPNOTSUPP)
	58	acl = NULL;
	59	else {
	60	nfserr = nfserrno(err);
	61	goto fail;
	62	}
	63	}
	64	if (acl == NULL) {
	65	/* Solaris returns the inode's minimum ACL. */
	66
	67	struct inode *inode = fh->fh_dentry->d_inode;
	68	acl = posix_acl_from_mode(inode->i_mode, GFP_KERNEL);
	69	}
	70	resp->acl_access = acl;
	71	}
	72	if (resp->mask & (NFS_DFACL\|NFS_DFACLCNT)) {
	73	/* Check how Solaris handles requests for the Default ACL
	74	of a non-directory! */
	75
	76	acl = nfsd_get_posix_acl(fh, ACL_TYPE_DEFAULT);
	77	if (IS_ERR(acl)) {
	78	int err = PTR_ERR(acl);
	79
	80	if (err == -ENODATA \|\| err == -EOPNOTSUPP)
	81	acl = NULL;
	82	else {
	83	nfserr = nfserrno(err);
	84	goto fail;
	85	}
	86	}
	87	resp->acl_default = acl;
	88	}
	89
	90	/* resp->acl_{access,default} are released in nfssvc_release_getacl. */
	91	RETURN_STATUS(0);
	92
	93	fail:
	94	posix_acl_release(resp->acl_access);
	95	posix_acl_release(resp->acl_default);
	96	RETURN_STATUS(nfserr);
	97	}
	98
	99	/*
	100	* Set the Access and/or Default ACL of a file.
	101	*/
7111c66e	102	static __be32 nfsacld_proc_setacl(struct svc_rqst * rqstp,
a257cdd0 AG	103	struct nfsd3_setaclargs *argp,
	104	struct nfsd_attrstat *resp)
	105	{
	106	svc_fh *fh;
c4d987ba	107	__be32 nfserr = 0;
a257cdd0 AG	108
	109	dprintk("nfsd: SETACL(2acl) %s\n", SVCFH_fmt(&argp->fh));
	110
	111	fh = fh_copy(&resp->fh, &argp->fh);
8837abca	112	nfserr = fh_verify(rqstp, &resp->fh, 0, NFSD_MAY_SATTR);
a257cdd0 AG	113
	114	if (!nfserr) {
	115	nfserr = nfserrno( nfsd_set_posix_acl(
	116	fh, ACL_TYPE_ACCESS, argp->acl_access) );
	117	}
	118	if (!nfserr) {
	119	nfserr = nfserrno( nfsd_set_posix_acl(
	120	fh, ACL_TYPE_DEFAULT, argp->acl_default) );
	121	}
4f4a4fad BF	122	if (!nfserr) {
	123	nfserr = fh_getattr(fh, &resp->stat);
	124	}
a257cdd0 AG	125
	126	/* argp->acl_{access,default} may have been allocated in
	127	nfssvc_decode_setaclargs. */
	128	posix_acl_release(argp->acl_access);
	129	posix_acl_release(argp->acl_default);
	130	return nfserr;
	131	}
	132
	133	/*
	134	* Check file attributes
	135	*/
7111c66e	136	static __be32 nfsacld_proc_getattr(struct svc_rqst * rqstp,
a257cdd0 AG	137	struct nfsd_fhandle argp, struct nfsd_attrstat resp)
a257cdd0 AG	138	{
4f4a4fad	139	__be32 nfserr;
a257cdd0 AG	140	dprintk("nfsd: GETATTR %s\n", SVCFH_fmt(&argp->fh));
	141
	142	fh_copy(&resp->fh, &argp->fh);
4f4a4fad BF	143	nfserr = fh_verify(rqstp, &resp->fh, 0, NFSD_MAY_NOP);
	144	if (nfserr)
	145	return nfserr;
	146	nfserr = fh_getattr(&resp->fh, &resp->stat);
	147	return nfserr;
a257cdd0 AG	148	}
	149
	150	/*
	151	* Check file access
	152	*/
7111c66e	153	static __be32 nfsacld_proc_access(struct svc_rqst rqstp, struct nfsd3_accessargs argp,
a257cdd0 AG	154	struct nfsd3_accessres *resp)
a257cdd0 AG	155	{
c4d987ba	156	__be32 nfserr;
a257cdd0 AG	157
	158	dprintk("nfsd: ACCESS(2acl) %s 0x%x\n",
	159	SVCFH_fmt(&argp->fh),
	160	argp->access);
	161
	162	fh_copy(&resp->fh, &argp->fh);
	163	resp->access = argp->access;
	164	nfserr = nfsd_access(rqstp, &resp->fh, &resp->access, NULL);
4f4a4fad BF	165	if (nfserr)
	166	return nfserr;
	167	nfserr = fh_getattr(&resp->fh, &resp->stat);
a257cdd0 AG	168	return nfserr;
	169	}
	170
	171	/*
	172	* XDR decode functions
	173	*/
131a21c2	174	static int nfsaclsvc_decode_getaclargs(struct svc_rqst rqstp, __be32 p,
a257cdd0 AG	175	struct nfsd3_getaclargs *argp)
	176	{
	177	if (!(p = nfs2svc_decode_fh(p, &argp->fh)))
	178	return 0;
	179	argp->mask = ntohl(*p); p++;
	180
	181	return xdr_argsize_check(rqstp, p);
	182	}
	183
	184
131a21c2	185	static int nfsaclsvc_decode_setaclargs(struct svc_rqst rqstp, __be32 p,
a257cdd0 AG	186	struct nfsd3_setaclargs *argp)
	187	{
	188	struct kvec *head = rqstp->rq_arg.head;
	189	unsigned int base;
	190	int n;
	191
	192	if (!(p = nfs2svc_decode_fh(p, &argp->fh)))
	193	return 0;
	194	argp->mask = ntohl(*p++);
	195	if (argp->mask & ~(NFS_ACL\|NFS_ACLCNT\|NFS_DFACL\|NFS_DFACLCNT) \|\|
	196	!xdr_argsize_check(rqstp, p))
	197	return 0;
	198
	199	base = (char )p - (char )head->iov_base;
	200	n = nfsacl_decode(&rqstp->rq_arg, base, NULL,
	201	(argp->mask & NFS_ACL) ?
	202	&argp->acl_access : NULL);
	203	if (n > 0)
	204	n = nfsacl_decode(&rqstp->rq_arg, base + n, NULL,
	205	(argp->mask & NFS_DFACL) ?
	206	&argp->acl_default : NULL);
	207	return (n > 0);
	208	}
	209
131a21c2	210	static int nfsaclsvc_decode_fhandleargs(struct svc_rqst rqstp, __be32 p,
a257cdd0 AG	211	struct nfsd_fhandle *argp)
	212	{
	213	if (!(p = nfs2svc_decode_fh(p, &argp->fh)))
	214	return 0;
	215	return xdr_argsize_check(rqstp, p);
	216	}
	217
131a21c2	218	static int nfsaclsvc_decode_accessargs(struct svc_rqst rqstp, __be32 p,
a257cdd0 AG	219	struct nfsd3_accessargs *argp)
	220	{
	221	if (!(p = nfs2svc_decode_fh(p, &argp->fh)))
	222	return 0;
	223	argp->access = ntohl(*p++);
	224
	225	return xdr_argsize_check(rqstp, p);
	226	}
	227
	228	/*
	229	* XDR encode functions
	230	*/
	231
1b7e0403 PS	232	/*
	233	* There must be an encoding function for void results so svc_process
	234	* will work properly.
	235	*/
9c0b0ff7	236	static int nfsaclsvc_encode_voidres(struct svc_rqst rqstp, __be32 p, void *dummy)
1b7e0403 PS	237	{
	238	return xdr_ressize_check(rqstp, p);
	239	}
	240
a257cdd0	241	/* GETACL */
131a21c2	242	static int nfsaclsvc_encode_getaclres(struct svc_rqst rqstp, __be32 p,
a257cdd0 AG	243	struct nfsd3_getaclres *resp)
	244	{
	245	struct dentry *dentry = resp->fh.fh_dentry;
aefa89d1	246	struct inode *inode;
a257cdd0 AG	247	struct kvec *head = rqstp->rq_res.head;
	248	unsigned int base;
	249	int n;
cb65a5ba	250	int w;
a257cdd0	251
aefa89d1 P	252	/*
	253	* Since this is version 2, the check for nfserr in
	254	* nfsd_dispatch actually ensures the following cannot happen.
	255	* However, it seems fragile to depend on that.
	256	*/
a257cdd0 AG	257	if (dentry == NULL \|\| dentry->d_inode == NULL)
	258	return 0;
	259	inode = dentry->d_inode;
	260
4f4a4fad	261	p = nfs2svc_encode_fattr(rqstp, p, &resp->fh, &resp->stat);
a257cdd0 AG	262	*p++ = htonl(resp->mask);
	263	if (!xdr_ressize_check(rqstp, p))
	264	return 0;
	265	base = (char )p - (char )head->iov_base;
	266
cb65a5ba JJ	267	rqstp->rq_res.page_len = w = nfsacl_size(
	268	(resp->mask & NFS_ACL) ? resp->acl_access : NULL,
	269	(resp->mask & NFS_DFACL) ? resp->acl_default : NULL);
a257cdd0	270	while (w > 0) {
afc59400	271	if (!*(rqstp->rq_next_page++))
a257cdd0 AG	272	return 0;
	273	w -= PAGE_SIZE;
	274	}
	275
	276	n = nfsacl_encode(&rqstp->rq_res, base, inode,
	277	resp->acl_access,
	278	resp->mask & NFS_ACL, 0);
	279	if (n > 0)
	280	n = nfsacl_encode(&rqstp->rq_res, base + n, inode,
	281	resp->acl_default,
	282	resp->mask & NFS_DFACL,
	283	NFS_ACL_DEFAULT);
	284	if (n <= 0)
	285	return 0;
	286	return 1;
	287	}
	288
131a21c2	289	static int nfsaclsvc_encode_attrstatres(struct svc_rqst rqstp, __be32 p,
a257cdd0 AG	290	struct nfsd_attrstat *resp)
a257cdd0 AG	291	{
4f4a4fad	292	p = nfs2svc_encode_fattr(rqstp, p, &resp->fh, &resp->stat);
a257cdd0 AG	293	return xdr_ressize_check(rqstp, p);
	294	}
	295
	296	/* ACCESS */
131a21c2	297	static int nfsaclsvc_encode_accessres(struct svc_rqst rqstp, __be32 p,
a257cdd0 AG	298	struct nfsd3_accessres *resp)
a257cdd0 AG	299	{
4f4a4fad	300	p = nfs2svc_encode_fattr(rqstp, p, &resp->fh, &resp->stat);
a257cdd0 AG	301	*p++ = htonl(resp->access);
	302	return xdr_ressize_check(rqstp, p);
	303	}
	304
	305	/*
	306	* XDR release functions
	307	*/
131a21c2	308	static int nfsaclsvc_release_getacl(struct svc_rqst rqstp, __be32 p,
a257cdd0 AG	309	struct nfsd3_getaclres *resp)
	310	{
	311	fh_put(&resp->fh);
	312	posix_acl_release(resp->acl_access);
	313	posix_acl_release(resp->acl_default);
	314	return 1;
	315	}
	316
c9ce2283 GB	317	static int nfsaclsvc_release_attrstat(struct svc_rqst rqstp, __be32 p,
c9ce2283 GB	318	struct nfsd_attrstat *resp)
a257cdd0 AG	319	{
	320	fh_put(&resp->fh);
	321	return 1;
	322	}
	323
c9ce2283 GB	324	static int nfsaclsvc_release_access(struct svc_rqst rqstp, __be32 p,
	325	struct nfsd3_accessres *resp)
	326	{
	327	fh_put(&resp->fh);
	328	return 1;
	329	}
	330
a257cdd0	331	#define nfsaclsvc_decode_voidargs NULL
a257cdd0 AG	332	#define nfsaclsvc_release_void NULL
	333	#define nfsd3_fhandleargs nfsd_fhandle
	334	#define nfsd3_attrstatres nfsd_attrstat
	335	#define nfsd3_voidres nfsd3_voidargs
	336	struct nfsd3_voidargs { int dummy; };
	337
	338	#define PROC(name, argt, rest, relt, cache, respsize) \
	339	{ (svc_procfunc) nfsacld_proc_##name, \
	340	(kxdrproc_t) nfsaclsvc_decode_##argt##args, \
	341	(kxdrproc_t) nfsaclsvc_encode_##rest##res, \
	342	(kxdrproc_t) nfsaclsvc_release_##relt, \
	343	sizeof(struct nfsd3_##argt##args), \
	344	sizeof(struct nfsd3_##rest##res), \
	345	0, \
	346	cache, \
	347	respsize, \
	348	}
	349
	350	#define ST 1 /* status*/
	351	#define AT 21 /* attributes */
	352	#define pAT (1+AT) /* post attributes - conditional */
	353	#define ACL (1+NFS_ACL_MAX_ENTRIES3) / Access Control List */
	354
	355	static struct svc_procedure nfsd_acl_procedures2[] = {
	356	PROC(null, void, void, void, RC_NOCACHE, ST),
	357	PROC(getacl, getacl, getacl, getacl, RC_NOCACHE, ST+1+2*(1+ACL)),
c9ce2283 GB	358	PROC(setacl, setacl, attrstat, attrstat, RC_NOCACHE, ST+AT),
	359	PROC(getattr, fhandle, attrstat, attrstat, RC_NOCACHE, ST+AT),
	360	PROC(access, access, access, access, RC_NOCACHE, ST+AT+1),
a257cdd0 AG	361	};
	362
	363	struct svc_version nfsd_acl_version2 = {
	364	.vs_vers = 2,
	365	.vs_nproc = 5,
	366	.vs_proc = nfsd_acl_procedures2,
	367	.vs_dispatch = nfsd_dispatch,
	368	.vs_xdrsize = NFS3_SVC_XDRSIZE,
1b7e0403	369	.vs_hidden = 0,
a257cdd0	370	};