[linux-block.git] / fs / nfsd / nfs2acl.c

// SPDX-License-Identifier: GPL-2.0
/*
 * 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

/*
 * NULL call.
 */
static __be32
nfsacld_proc_null(struct svc_rqst *rqstp)
{
	return rpc_success;
}

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

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

	fh = fh_copy(&resp->fh, &argp->fh);
	resp->status = fh_verify(rqstp, &resp->fh, 0, NFSD_MAY_NOP);
	if (resp->status != nfs_ok)
		goto out;

	inode = d_inode(fh->fh_dentry);

	if (argp->mask & ~NFS_ACL_MASK) {
		resp->status = nfserr_inval;
		goto out;
	}
	resp->mask = argp->mask;

	resp->status = fh_getattr(fh, &resp->stat);
	if (resp->status != nfs_ok)
		goto out;

	if (resp->mask & (NFS_ACL|NFS_ACLCNT)) {
		acl = get_acl(inode, ACL_TYPE_ACCESS);
		if (acl == NULL) {
			/* Solaris returns the inode's minimum ACL. */
			acl = posix_acl_from_mode(inode->i_mode, GFP_KERNEL);
		}
		if (IS_ERR(acl)) {
			resp->status = nfserrno(PTR_ERR(acl));
			goto fail;
		}
		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 = get_acl(inode, ACL_TYPE_DEFAULT);
		if (IS_ERR(acl)) {
			resp->status = nfserrno(PTR_ERR(acl));
			goto fail;
		}
		resp->acl_default = acl;
	}

	/* resp->acl_{access,default} are released in nfssvc_release_getacl. */
out:
	return rpc_success;

fail:
	posix_acl_release(resp->acl_access);
	posix_acl_release(resp->acl_default);
	goto out;
}

/*
 * Set the Access and/or Default ACL of a file.
 */
static __be32 nfsacld_proc_setacl(struct svc_rqst *rqstp)
{
	struct nfsd3_setaclargs *argp = rqstp->rq_argp;
	struct nfsd_attrstat *resp = rqstp->rq_resp;
	struct inode *inode;
	svc_fh *fh;
	int error;

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

	fh = fh_copy(&resp->fh, &argp->fh);
	resp->status = fh_verify(rqstp, &resp->fh, 0, NFSD_MAY_SATTR);
	if (resp->status != nfs_ok)
		goto out;

	inode = d_inode(fh->fh_dentry);

	error = fh_want_write(fh);
	if (error)
		goto out_errno;

	fh_lock(fh);

	error = set_posix_acl(&init_user_ns, inode, ACL_TYPE_ACCESS,
			      argp->acl_access);
	if (error)
		goto out_drop_lock;
	error = set_posix_acl(&init_user_ns, inode, ACL_TYPE_DEFAULT,
			      argp->acl_default);
	if (error)
		goto out_drop_lock;

	fh_unlock(fh);

	fh_drop_write(fh);

	resp->status = fh_getattr(fh, &resp->stat);

out:
	/* 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 rpc_success;

out_drop_lock:
	fh_unlock(fh);
	fh_drop_write(fh);
out_errno:
	resp->status = nfserrno(error);
	goto out;
}

/*
 * Check file attributes
 */
static __be32 nfsacld_proc_getattr(struct svc_rqst *rqstp)
{
	struct nfsd_fhandle *argp = rqstp->rq_argp;
	struct nfsd_attrstat *resp = rqstp->rq_resp;

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

	fh_copy(&resp->fh, &argp->fh);
	resp->status = fh_verify(rqstp, &resp->fh, 0, NFSD_MAY_NOP);
	if (resp->status != nfs_ok)
		goto out;
	resp->status = fh_getattr(&resp->fh, &resp->stat);
out:
	return rpc_success;
}

/*
 * Check file access
 */
static __be32 nfsacld_proc_access(struct svc_rqst *rqstp)
{
	struct nfsd3_accessargs *argp = rqstp->rq_argp;
	struct nfsd3_accessres *resp = rqstp->rq_resp;

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

	fh_copy(&resp->fh, &argp->fh);
	resp->access = argp->access;
	resp->status = nfsd_access(rqstp, &resp->fh, &resp->access, NULL);
	if (resp->status != nfs_ok)
		goto out;
	resp->status = fh_getattr(&resp->fh, &resp->stat);
out:
	return rpc_success;
}

/*
 * XDR decode functions
 */

static bool
nfsaclsvc_decode_getaclargs(struct svc_rqst *rqstp, struct xdr_stream *xdr)
{
	struct nfsd3_getaclargs *argp = rqstp->rq_argp;

	if (!svcxdr_decode_fhandle(xdr, &argp->fh))
		return false;
	if (xdr_stream_decode_u32(xdr, &argp->mask) < 0)
		return false;

	return true;
}

static bool
nfsaclsvc_decode_setaclargs(struct svc_rqst *rqstp, struct xdr_stream *xdr)
{
	struct nfsd3_setaclargs *argp = rqstp->rq_argp;

	if (!svcxdr_decode_fhandle(xdr, &argp->fh))
		return false;
	if (xdr_stream_decode_u32(xdr, &argp->mask) < 0)
		return false;
	if (argp->mask & ~NFS_ACL_MASK)
		return false;
	if (!nfs_stream_decode_acl(xdr, NULL, (argp->mask & NFS_ACL) ?
				   &argp->acl_access : NULL))
		return false;
	if (!nfs_stream_decode_acl(xdr, NULL, (argp->mask & NFS_DFACL) ?
				   &argp->acl_default : NULL))
		return false;

	return true;
}

static bool
nfsaclsvc_decode_accessargs(struct svc_rqst *rqstp, struct xdr_stream *xdr)
{
	struct nfsd3_accessargs *args = rqstp->rq_argp;

	if (!svcxdr_decode_fhandle(xdr, &args->fh))
		return false;
	if (xdr_stream_decode_u32(xdr, &args->access) < 0)
		return false;

	return true;
}

/*
 * XDR encode functions
 */

/* GETACL */
static int
nfsaclsvc_encode_getaclres(struct svc_rqst *rqstp, struct xdr_stream *xdr)
{
	struct nfsd3_getaclres *resp = rqstp->rq_resp;
	struct dentry *dentry = resp->fh.fh_dentry;
	struct inode *inode;
	int w;

	if (!svcxdr_encode_stat(xdr, resp->status))
		return 0;

	if (dentry == NULL || d_really_is_negative(dentry))
		return 1;
	inode = d_inode(dentry);

	if (!svcxdr_encode_fattr(rqstp, xdr, &resp->fh, &resp->stat))
		return 0;
	if (xdr_stream_encode_u32(xdr, resp->mask) < 0)
		return 0;

	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 1;
		w -= PAGE_SIZE;
	}

	if (!nfs_stream_encode_acl(xdr, inode, resp->acl_access,
				   resp->mask & NFS_ACL, 0))
		return 0;
	if (!nfs_stream_encode_acl(xdr, inode, resp->acl_default,
				   resp->mask & NFS_DFACL, NFS_ACL_DEFAULT))
		return 0;

	return 1;
}

/* ACCESS */
static int
nfsaclsvc_encode_accessres(struct svc_rqst *rqstp, struct xdr_stream *xdr)
{
	struct nfsd3_accessres *resp = rqstp->rq_resp;

	if (!svcxdr_encode_stat(xdr, resp->status))
		return 0;
	switch (resp->status) {
	case nfs_ok:
		if (!svcxdr_encode_fattr(rqstp, xdr, &resp->fh, &resp->stat))
			return 0;
		if (xdr_stream_encode_u32(xdr, resp->access) < 0)
			return 0;
		break;
	}

	return 1;
}

/*
 * XDR release functions
 */
static void nfsaclsvc_release_getacl(struct svc_rqst *rqstp)
{
	struct nfsd3_getaclres *resp = rqstp->rq_resp;

	fh_put(&resp->fh);
	posix_acl_release(resp->acl_access);
	posix_acl_release(resp->acl_default);
}

static void nfsaclsvc_release_access(struct svc_rqst *rqstp)
{
	struct nfsd3_accessres *resp = rqstp->rq_resp;

	fh_put(&resp->fh);
}

struct nfsd3_voidargs { int dummy; };

#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 const struct svc_procedure nfsd_acl_procedures2[5] = {
	[ACLPROC2_NULL] = {
		.pc_func = nfsacld_proc_null,
		.pc_decode = nfssvc_decode_voidarg,
		.pc_encode = nfssvc_encode_voidres,
		.pc_argsize = sizeof(struct nfsd_voidargs),
		.pc_ressize = sizeof(struct nfsd_voidres),
		.pc_cachetype = RC_NOCACHE,
		.pc_xdrressize = ST,
		.pc_name = "NULL",
	},
	[ACLPROC2_GETACL] = {
		.pc_func = nfsacld_proc_getacl,
		.pc_decode = nfsaclsvc_decode_getaclargs,
		.pc_encode = nfsaclsvc_encode_getaclres,
		.pc_release = nfsaclsvc_release_getacl,
		.pc_argsize = sizeof(struct nfsd3_getaclargs),
		.pc_ressize = sizeof(struct nfsd3_getaclres),
		.pc_cachetype = RC_NOCACHE,
		.pc_xdrressize = ST+1+2*(1+ACL),
		.pc_name = "GETACL",
	},
	[ACLPROC2_SETACL] = {
		.pc_func = nfsacld_proc_setacl,
		.pc_decode = nfsaclsvc_decode_setaclargs,
		.pc_encode = nfssvc_encode_attrstatres,
		.pc_release = nfssvc_release_attrstat,
		.pc_argsize = sizeof(struct nfsd3_setaclargs),
		.pc_ressize = sizeof(struct nfsd_attrstat),
		.pc_cachetype = RC_NOCACHE,
		.pc_xdrressize = ST+AT,
		.pc_name = "SETACL",
	},
	[ACLPROC2_GETATTR] = {
		.pc_func = nfsacld_proc_getattr,
		.pc_decode = nfssvc_decode_fhandleargs,
		.pc_encode = nfssvc_encode_attrstatres,
		.pc_release = nfssvc_release_attrstat,
		.pc_argsize = sizeof(struct nfsd_fhandle),
		.pc_ressize = sizeof(struct nfsd_attrstat),
		.pc_cachetype = RC_NOCACHE,
		.pc_xdrressize = ST+AT,
		.pc_name = "GETATTR",
	},
	[ACLPROC2_ACCESS] = {
		.pc_func = nfsacld_proc_access,
		.pc_decode = nfsaclsvc_decode_accessargs,
		.pc_encode = nfsaclsvc_encode_accessres,
		.pc_release = nfsaclsvc_release_access,
		.pc_argsize = sizeof(struct nfsd3_accessargs),
		.pc_ressize = sizeof(struct nfsd3_accessres),
		.pc_cachetype = RC_NOCACHE,
		.pc_xdrressize = ST+AT+1,
		.pc_name = "SETATTR",
	},
};

static unsigned int nfsd_acl_count2[ARRAY_SIZE(nfsd_acl_procedures2)];
const struct svc_version nfsd_acl_version2 = {
	.vs_vers	= 2,
	.vs_nproc	= 5,
	.vs_proc	= nfsd_acl_procedures2,
	.vs_count	= nfsd_acl_count2,
	.vs_dispatch	= nfsd_dispatch,
	.vs_xdrsize	= NFS3_SVC_XDRSIZE,
};
Commit	Line	Data
b2441318	1	// SPDX-License-Identifier: GPL-2.0
a257cdd0	2	/*
a257cdd0 AG	3	* Process version 2 NFSACL requests.
	4	*
	5	* Copyright (C) 2002-2003 Andreas Gruenbacher <agruen@suse.de>
	6	*/
	7
9a74af21 BH	8	#include "nfsd.h"
9a74af21 BH	9	/* FIXME: nfsacl.h is a broken header */
a257cdd0	10	#include <linux/nfsacl.h>
5a0e3ad6	11	#include <linux/gfp.h>
9a74af21 BH	12	#include "cache.h"
9a74af21 BH	13	#include "xdr3.h"
0a3adade	14	#include "vfs.h"
a257cdd0 AG	15
a257cdd0 AG	16	#define NFSDDBG_FACILITY NFSDDBG_PROC
a257cdd0 AG	17
	18	/*
	19	* NULL call.
	20	*/
7111c66e	21	static __be32
a6beb732	22	nfsacld_proc_null(struct svc_rqst *rqstp)
a257cdd0	23	{
cc028a10	24	return rpc_success;
a257cdd0 AG	25	}
	26
	27	/*
	28	* Get the Access and/or Default ACL of a file.
	29	*/
a6beb732	30	static __be32 nfsacld_proc_getacl(struct svc_rqst *rqstp)
a257cdd0	31	{
a6beb732 CH	32	struct nfsd3_getaclargs *argp = rqstp->rq_argp;
a6beb732 CH	33	struct nfsd3_getaclres *resp = rqstp->rq_resp;
a257cdd0	34	struct posix_acl *acl;
4ac7249e CH	35	struct inode *inode;
4ac7249e CH	36	svc_fh *fh;
a257cdd0 AG	37
	38	dprintk("nfsd: GETACL(2acl) %s\n", SVCFH_fmt(&argp->fh));
	39
	40	fh = fh_copy(&resp->fh, &argp->fh);
f0af2210 CL	41	resp->status = fh_verify(rqstp, &resp->fh, 0, NFSD_MAY_NOP);
	42	if (resp->status != nfs_ok)
	43	goto out;
a257cdd0	44
2b0143b5	45	inode = d_inode(fh->fh_dentry);
4ac7249e	46
f0af2210 CL	47	if (argp->mask & ~NFS_ACL_MASK) {
	48	resp->status = nfserr_inval;
	49	goto out;
	50	}
a257cdd0 AG	51	resp->mask = argp->mask;
a257cdd0 AG	52
f0af2210 CL	53	resp->status = fh_getattr(fh, &resp->stat);
	54	if (resp->status != nfs_ok)
	55	goto out;
4f4a4fad	56
a257cdd0	57	if (resp->mask & (NFS_ACL\|NFS_ACLCNT)) {
4ac7249e	58	acl = get_acl(inode, ACL_TYPE_ACCESS);
a257cdd0 AG	59	if (acl == NULL) {
a257cdd0 AG	60	/* Solaris returns the inode's minimum ACL. */
a257cdd0 AG	61	acl = posix_acl_from_mode(inode->i_mode, GFP_KERNEL);
a257cdd0 AG	62	}
35e634b8	63	if (IS_ERR(acl)) {
f0af2210	64	resp->status = nfserrno(PTR_ERR(acl));
35e634b8 KM	65	goto fail;
35e634b8 KM	66	}
a257cdd0 AG	67	resp->acl_access = acl;
	68	}
	69	if (resp->mask & (NFS_DFACL\|NFS_DFACLCNT)) {
	70	/* Check how Solaris handles requests for the Default ACL
	71	of a non-directory! */
4ac7249e	72	acl = get_acl(inode, ACL_TYPE_DEFAULT);
a257cdd0	73	if (IS_ERR(acl)) {
f0af2210	74	resp->status = nfserrno(PTR_ERR(acl));
4ac7249e	75	goto fail;
a257cdd0 AG	76	}
	77	resp->acl_default = acl;
	78	}
	79
	80	/* resp->acl_{access,default} are released in nfssvc_release_getacl. */
f0af2210	81	out:
cc028a10	82	return rpc_success;
a257cdd0 AG	83
	84	fail:
	85	posix_acl_release(resp->acl_access);
	86	posix_acl_release(resp->acl_default);
f0af2210	87	goto out;
a257cdd0 AG	88	}
	89
	90	/*
	91	* Set the Access and/or Default ACL of a file.
	92	*/
a6beb732	93	static __be32 nfsacld_proc_setacl(struct svc_rqst *rqstp)
a257cdd0	94	{
a6beb732 CH	95	struct nfsd3_setaclargs *argp = rqstp->rq_argp;
a6beb732 CH	96	struct nfsd_attrstat *resp = rqstp->rq_resp;
4ac7249e	97	struct inode *inode;
a257cdd0	98	svc_fh *fh;
4ac7249e	99	int error;
a257cdd0 AG	100
	101	dprintk("nfsd: SETACL(2acl) %s\n", SVCFH_fmt(&argp->fh));
	102
	103	fh = fh_copy(&resp->fh, &argp->fh);
f0af2210 CL	104	resp->status = fh_verify(rqstp, &resp->fh, 0, NFSD_MAY_SATTR);
f0af2210 CL	105	if (resp->status != nfs_ok)
4ac7249e	106	goto out;
a257cdd0	107
2b0143b5	108	inode = d_inode(fh->fh_dentry);
a257cdd0	109
4ac7249e CH	110	error = fh_want_write(fh);
	111	if (error)
	112	goto out_errno;
	113
99965378 BH	114	fh_lock(fh);
99965378 BH	115
e65ce2a5 CB	116	error = set_posix_acl(&init_user_ns, inode, ACL_TYPE_ACCESS,
e65ce2a5 CB	117	argp->acl_access);
4ac7249e	118	if (error)
99965378	119	goto out_drop_lock;
e65ce2a5 CB	120	error = set_posix_acl(&init_user_ns, inode, ACL_TYPE_DEFAULT,
e65ce2a5 CB	121	argp->acl_default);
4ac7249e	122	if (error)
99965378 BH	123	goto out_drop_lock;
	124
	125	fh_unlock(fh);
4ac7249e CH	126
	127	fh_drop_write(fh);
	128
f0af2210	129	resp->status = fh_getattr(fh, &resp->stat);
4ac7249e CH	130
4ac7249e CH	131	out:
a257cdd0 AG	132	/* argp->acl_{access,default} may have been allocated in
	133	nfssvc_decode_setaclargs. */
	134	posix_acl_release(argp->acl_access);
	135	posix_acl_release(argp->acl_default);
cc028a10	136	return rpc_success;
f0af2210	137
99965378 BH	138	out_drop_lock:
99965378 BH	139	fh_unlock(fh);
4ac7249e CH	140	fh_drop_write(fh);
4ac7249e CH	141	out_errno:
f0af2210	142	resp->status = nfserrno(error);
4ac7249e	143	goto out;
a257cdd0 AG	144	}
	145
	146	/*
	147	* Check file attributes
	148	*/
a6beb732	149	static __be32 nfsacld_proc_getattr(struct svc_rqst *rqstp)
a257cdd0	150	{
a6beb732 CH	151	struct nfsd_fhandle *argp = rqstp->rq_argp;
a6beb732 CH	152	struct nfsd_attrstat *resp = rqstp->rq_resp;
f0af2210	153
a257cdd0 AG	154	dprintk("nfsd: GETATTR %s\n", SVCFH_fmt(&argp->fh));
	155
	156	fh_copy(&resp->fh, &argp->fh);
f0af2210 CL	157	resp->status = fh_verify(rqstp, &resp->fh, 0, NFSD_MAY_NOP);
	158	if (resp->status != nfs_ok)
	159	goto out;
	160	resp->status = fh_getattr(&resp->fh, &resp->stat);
	161	out:
cc028a10	162	return rpc_success;
a257cdd0 AG	163	}
	164
	165	/*
	166	* Check file access
	167	*/
a6beb732	168	static __be32 nfsacld_proc_access(struct svc_rqst *rqstp)
a257cdd0	169	{
a6beb732 CH	170	struct nfsd3_accessargs *argp = rqstp->rq_argp;
a6beb732 CH	171	struct nfsd3_accessres *resp = rqstp->rq_resp;
a257cdd0 AG	172
	173	dprintk("nfsd: ACCESS(2acl) %s 0x%x\n",
	174	SVCFH_fmt(&argp->fh),
	175	argp->access);
	176
	177	fh_copy(&resp->fh, &argp->fh);
	178	resp->access = argp->access;
f0af2210 CL	179	resp->status = nfsd_access(rqstp, &resp->fh, &resp->access, NULL);
	180	if (resp->status != nfs_ok)
	181	goto out;
	182	resp->status = fh_getattr(&resp->fh, &resp->stat);
	183	out:
cc028a10	184	return rpc_success;
a257cdd0 AG	185	}
	186
	187	/*
	188	* XDR decode functions
	189	*/
dcc46991	190
c44b31c2	191	static bool
16c66364	192	nfsaclsvc_decode_getaclargs(struct svc_rqst rqstp, struct xdr_stream xdr)
a257cdd0	193	{
026fec7e CH	194	struct nfsd3_getaclargs *argp = rqstp->rq_argp;
026fec7e CH	195
635a45d3	196	if (!svcxdr_decode_fhandle(xdr, &argp->fh))
c44b31c2	197	return false;
635a45d3	198	if (xdr_stream_decode_u32(xdr, &argp->mask) < 0)
c44b31c2	199	return false;
a257cdd0	200
c44b31c2	201	return true;
a257cdd0 AG	202	}
a257cdd0 AG	203
c44b31c2	204	static bool
16c66364	205	nfsaclsvc_decode_setaclargs(struct svc_rqst rqstp, struct xdr_stream xdr)
a257cdd0	206	{
026fec7e	207	struct nfsd3_setaclargs *argp = rqstp->rq_argp;
a257cdd0	208
427eab3b	209	if (!svcxdr_decode_fhandle(xdr, &argp->fh))
c44b31c2	210	return false;
427eab3b	211	if (xdr_stream_decode_u32(xdr, &argp->mask) < 0)
c44b31c2	212	return false;
427eab3b	213	if (argp->mask & ~NFS_ACL_MASK)
c44b31c2	214	return false;
427eab3b CL	215	if (!nfs_stream_decode_acl(xdr, NULL, (argp->mask & NFS_ACL) ?
427eab3b CL	216	&argp->acl_access : NULL))
c44b31c2	217	return false;
427eab3b CL	218	if (!nfs_stream_decode_acl(xdr, NULL, (argp->mask & NFS_DFACL) ?
427eab3b CL	219	&argp->acl_default : NULL))
c44b31c2	220	return false;
a257cdd0	221
c44b31c2	222	return true;
a257cdd0 AG	223	}
a257cdd0 AG	224
c44b31c2	225	static bool
16c66364	226	nfsaclsvc_decode_accessargs(struct svc_rqst rqstp, struct xdr_stream xdr)
a257cdd0	227	{
64063892	228	struct nfsd3_accessargs *args = rqstp->rq_argp;
026fec7e	229
64063892	230	if (!svcxdr_decode_fhandle(xdr, &args->fh))
c44b31c2	231	return false;
64063892	232	if (xdr_stream_decode_u32(xdr, &args->access) < 0)
c44b31c2	233	return false;
a257cdd0	234
c44b31c2	235	return true;
a257cdd0 AG	236	}
	237
	238	/*
	239	* XDR encode functions
	240	*/
	241
	242	/* GETACL */
fda49441 CL	243	static int
fda49441 CL	244	nfsaclsvc_encode_getaclres(struct svc_rqst rqstp, struct xdr_stream xdr)
a257cdd0	245	{
63f8de37	246	struct nfsd3_getaclres *resp = rqstp->rq_resp;
a257cdd0	247	struct dentry *dentry = resp->fh.fh_dentry;
aefa89d1	248	struct inode *inode;
cb65a5ba	249	int w;
a257cdd0	250
f8cba473 CL	251	if (!svcxdr_encode_stat(xdr, resp->status))
f8cba473 CL	252	return 0;
f0af2210	253
2b0143b5	254	if (dentry == NULL \|\| d_really_is_negative(dentry))
f8cba473	255	return 1;
2b0143b5	256	inode = d_inode(dentry);
a257cdd0	257
f8cba473 CL	258	if (!svcxdr_encode_fattr(rqstp, xdr, &resp->fh, &resp->stat))
	259	return 0;
	260	if (xdr_stream_encode_u32(xdr, resp->mask) < 0)
a257cdd0	261	return 0;
a257cdd0	262
cb65a5ba JJ	263	rqstp->rq_res.page_len = w = nfsacl_size(
	264	(resp->mask & NFS_ACL) ? resp->acl_access : NULL,
	265	(resp->mask & NFS_DFACL) ? resp->acl_default : NULL);
a257cdd0	266	while (w > 0) {
afc59400	267	if (!*(rqstp->rq_next_page++))
f8cba473	268	return 1;
a257cdd0 AG	269	w -= PAGE_SIZE;
	270	}
	271
f8cba473 CL	272	if (!nfs_stream_encode_acl(xdr, inode, resp->acl_access,
	273	resp->mask & NFS_ACL, 0))
	274	return 0;
	275	if (!nfs_stream_encode_acl(xdr, inode, resp->acl_default,
	276	resp->mask & NFS_DFACL, NFS_ACL_DEFAULT))
	277	return 0;
	278
	279	return 1;
a257cdd0 AG	280	}
a257cdd0 AG	281
a257cdd0	282	/* ACCESS */
fda49441 CL	283	static int
fda49441 CL	284	nfsaclsvc_encode_accessres(struct svc_rqst rqstp, struct xdr_stream xdr)
a257cdd0	285	{
63f8de37 CH	286	struct nfsd3_accessres *resp = rqstp->rq_resp;
63f8de37 CH	287
07f5c296 CL	288	if (!svcxdr_encode_stat(xdr, resp->status))
	289	return 0;
	290	switch (resp->status) {
	291	case nfs_ok:
	292	if (!svcxdr_encode_fattr(rqstp, xdr, &resp->fh, &resp->stat))
	293	return 0;
	294	if (xdr_stream_encode_u32(xdr, resp->access) < 0)
	295	return 0;
	296	break;
	297	}
f0af2210	298
07f5c296	299	return 1;
a257cdd0 AG	300	}
	301
	302	/*
	303	* XDR release functions
	304	*/
8537488b	305	static void nfsaclsvc_release_getacl(struct svc_rqst *rqstp)
a257cdd0	306	{
8537488b CH	307	struct nfsd3_getaclres *resp = rqstp->rq_resp;
8537488b CH	308
a257cdd0 AG	309	fh_put(&resp->fh);
	310	posix_acl_release(resp->acl_access);
	311	posix_acl_release(resp->acl_default);
a257cdd0 AG	312	}
a257cdd0 AG	313
8537488b	314	static void nfsaclsvc_release_access(struct svc_rqst *rqstp)
c9ce2283	315	{
8537488b CH	316	struct nfsd3_accessres *resp = rqstp->rq_resp;
	317
	318	fh_put(&resp->fh);
c9ce2283 GB	319	}
c9ce2283 GB	320
a257cdd0 AG	321	struct nfsd3_voidargs { int dummy; };
a257cdd0 AG	322
a257cdd0 AG	323	#define ST 1 /* status*/
	324	#define AT 21 /* attributes */
	325	#define pAT (1+AT) /* post attributes - conditional */
	326	#define ACL (1+NFS_ACL_MAX_ENTRIES3) / Access Control List */
	327
ba1df797 CL	328	static const struct svc_procedure nfsd_acl_procedures2[5] = {
	329	[ACLPROC2_NULL] = {
	330	.pc_func = nfsacld_proc_null,
788f7183 CL	331	.pc_decode = nfssvc_decode_voidarg,
	332	.pc_encode = nfssvc_encode_voidres,
	333	.pc_argsize = sizeof(struct nfsd_voidargs),
	334	.pc_ressize = sizeof(struct nfsd_voidres),
ba1df797 CL	335	.pc_cachetype = RC_NOCACHE,
ba1df797 CL	336	.pc_xdrressize = ST,
2289e87b	337	.pc_name = "NULL",
ba1df797 CL	338	},
	339	[ACLPROC2_GETACL] = {
	340	.pc_func = nfsacld_proc_getacl,
	341	.pc_decode = nfsaclsvc_decode_getaclargs,
	342	.pc_encode = nfsaclsvc_encode_getaclres,
	343	.pc_release = nfsaclsvc_release_getacl,
	344	.pc_argsize = sizeof(struct nfsd3_getaclargs),
	345	.pc_ressize = sizeof(struct nfsd3_getaclres),
	346	.pc_cachetype = RC_NOCACHE,
	347	.pc_xdrressize = ST+1+2*(1+ACL),
2289e87b	348	.pc_name = "GETACL",
ba1df797 CL	349	},
	350	[ACLPROC2_SETACL] = {
	351	.pc_func = nfsacld_proc_setacl,
	352	.pc_decode = nfsaclsvc_decode_setaclargs,
778f068f CL	353	.pc_encode = nfssvc_encode_attrstatres,
778f068f CL	354	.pc_release = nfssvc_release_attrstat,
ba1df797 CL	355	.pc_argsize = sizeof(struct nfsd3_setaclargs),
	356	.pc_ressize = sizeof(struct nfsd_attrstat),
	357	.pc_cachetype = RC_NOCACHE,
	358	.pc_xdrressize = ST+AT,
2289e87b	359	.pc_name = "SETACL",
ba1df797 CL	360	},
	361	[ACLPROC2_GETATTR] = {
	362	.pc_func = nfsacld_proc_getattr,
571d31f3	363	.pc_decode = nfssvc_decode_fhandleargs,
8d2009a1 CL	364	.pc_encode = nfssvc_encode_attrstatres,
8d2009a1 CL	365	.pc_release = nfssvc_release_attrstat,
ba1df797 CL	366	.pc_argsize = sizeof(struct nfsd_fhandle),
	367	.pc_ressize = sizeof(struct nfsd_attrstat),
	368	.pc_cachetype = RC_NOCACHE,
	369	.pc_xdrressize = ST+AT,
2289e87b	370	.pc_name = "GETATTR",
ba1df797 CL	371	},
	372	[ACLPROC2_ACCESS] = {
	373	.pc_func = nfsacld_proc_access,
	374	.pc_decode = nfsaclsvc_decode_accessargs,
	375	.pc_encode = nfsaclsvc_encode_accessres,
	376	.pc_release = nfsaclsvc_release_access,
	377	.pc_argsize = sizeof(struct nfsd3_accessargs),
	378	.pc_ressize = sizeof(struct nfsd3_accessres),
	379	.pc_cachetype = RC_NOCACHE,
	380	.pc_xdrressize = ST+AT+1,
2289e87b	381	.pc_name = "SETATTR",
ba1df797	382	},
a257cdd0 AG	383	};
a257cdd0 AG	384
7fd38af9	385	static unsigned int nfsd_acl_count2[ARRAY_SIZE(nfsd_acl_procedures2)];
e9679189 CH	386	const struct svc_version nfsd_acl_version2 = {
	387	.vs_vers = 2,
	388	.vs_nproc = 5,
	389	.vs_proc = nfsd_acl_procedures2,
	390	.vs_count = nfsd_acl_count2,
	391	.vs_dispatch = nfsd_dispatch,
	392	.vs_xdrsize = NFS3_SVC_XDRSIZE,
a257cdd0	393	};