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

// SPDX-License-Identifier: GPL-2.0
/*
 * Process version 2 NFSACL requests.
 *
 * Copyright (C) 2002-2003 Andreas Gruenbacher <[email protected]>
 */

#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_inode_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_inode_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);
	resp->acl_access = NULL;
	resp->acl_default = NULL;
	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;

	inode_lock(inode);

	error = set_posix_acl(&nop_mnt_idmap, fh->fh_dentry, ACL_TYPE_ACCESS,
			      argp->acl_access);
	if (error)
		goto out_drop_lock;
	error = set_posix_acl(&nop_mnt_idmap, fh->fh_dentry, ACL_TYPE_DEFAULT,
			      argp->acl_default);
	if (error)
		goto out_drop_lock;

	inode_unlock(inode);

	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:
	inode_unlock(inode);
	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 bool
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;

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

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

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

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

	return true;
}

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

	return true;
}

/*
 * 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);
}

#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_argzero = 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_argzero = 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_argzero = 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_argzero = 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_argzero = sizeof(struct nfsd3_accessargs),
		.pc_ressize = sizeof(struct nfsd3_accessres),
		.pc_cachetype = RC_NOCACHE,
		.pc_xdrressize = ST+AT+1,
		.pc_name = "SETATTR",
	},
};

static DEFINE_PER_CPU_ALIGNED(unsigned long,
			      nfsd_acl_count2[ARRAY_SIZE(nfsd_acl_procedures2)]);
const struct svc_version nfsd_acl_version2 = {
	.vs_vers	= 2,
	.vs_nproc	= ARRAY_SIZE(nfsd_acl_procedures2),
	.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 <[email protected]>
	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)) {
cac2f8b8	58	acl = get_inode_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! */
cac2f8b8	72	acl = get_inode_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);
7faf14a7 LL	87	resp->acl_access = NULL;
7faf14a7 LL	88	resp->acl_default = NULL;
f0af2210	89	goto out;
a257cdd0 AG	90	}
	91
	92	/*
	93	* Set the Access and/or Default ACL of a file.
	94	*/
a6beb732	95	static __be32 nfsacld_proc_setacl(struct svc_rqst *rqstp)
a257cdd0	96	{
a6beb732 CH	97	struct nfsd3_setaclargs *argp = rqstp->rq_argp;
a6beb732 CH	98	struct nfsd_attrstat *resp = rqstp->rq_resp;
4ac7249e	99	struct inode *inode;
a257cdd0	100	svc_fh *fh;
4ac7249e	101	int error;
a257cdd0 AG	102
	103	dprintk("nfsd: SETACL(2acl) %s\n", SVCFH_fmt(&argp->fh));
	104
	105	fh = fh_copy(&resp->fh, &argp->fh);
f0af2210 CL	106	resp->status = fh_verify(rqstp, &resp->fh, 0, NFSD_MAY_SATTR);
f0af2210 CL	107	if (resp->status != nfs_ok)
4ac7249e	108	goto out;
a257cdd0	109
2b0143b5	110	inode = d_inode(fh->fh_dentry);
a257cdd0	111
4ac7249e CH	112	error = fh_want_write(fh);
	113	if (error)
	114	goto out_errno;
	115
bb4d53d6	116	inode_lock(inode);
99965378	117
13e83a49	118	error = set_posix_acl(&nop_mnt_idmap, fh->fh_dentry, ACL_TYPE_ACCESS,
e65ce2a5	119	argp->acl_access);
4ac7249e	120	if (error)
99965378	121	goto out_drop_lock;
13e83a49	122	error = set_posix_acl(&nop_mnt_idmap, fh->fh_dentry, ACL_TYPE_DEFAULT,
e65ce2a5	123	argp->acl_default);
4ac7249e	124	if (error)
99965378 BH	125	goto out_drop_lock;
99965378 BH	126
bb4d53d6	127	inode_unlock(inode);
4ac7249e CH	128
	129	fh_drop_write(fh);
	130
f0af2210	131	resp->status = fh_getattr(fh, &resp->stat);
4ac7249e CH	132
4ac7249e CH	133	out:
a257cdd0 AG	134	/* argp->acl_{access,default} may have been allocated in
	135	nfssvc_decode_setaclargs. */
	136	posix_acl_release(argp->acl_access);
	137	posix_acl_release(argp->acl_default);
cc028a10	138	return rpc_success;
f0af2210	139
99965378	140	out_drop_lock:
bb4d53d6	141	inode_unlock(inode);
4ac7249e CH	142	fh_drop_write(fh);
4ac7249e CH	143	out_errno:
f0af2210	144	resp->status = nfserrno(error);
4ac7249e	145	goto out;
a257cdd0 AG	146	}
	147
	148	/*
	149	* Check file attributes
	150	*/
a6beb732	151	static __be32 nfsacld_proc_getattr(struct svc_rqst *rqstp)
a257cdd0	152	{
a6beb732 CH	153	struct nfsd_fhandle *argp = rqstp->rq_argp;
a6beb732 CH	154	struct nfsd_attrstat *resp = rqstp->rq_resp;
f0af2210	155
a257cdd0 AG	156	dprintk("nfsd: GETATTR %s\n", SVCFH_fmt(&argp->fh));
	157
	158	fh_copy(&resp->fh, &argp->fh);
f0af2210 CL	159	resp->status = fh_verify(rqstp, &resp->fh, 0, NFSD_MAY_NOP);
	160	if (resp->status != nfs_ok)
	161	goto out;
	162	resp->status = fh_getattr(&resp->fh, &resp->stat);
	163	out:
cc028a10	164	return rpc_success;
a257cdd0 AG	165	}
	166
	167	/*
	168	* Check file access
	169	*/
a6beb732	170	static __be32 nfsacld_proc_access(struct svc_rqst *rqstp)
a257cdd0	171	{
a6beb732 CH	172	struct nfsd3_accessargs *argp = rqstp->rq_argp;
a6beb732 CH	173	struct nfsd3_accessres *resp = rqstp->rq_resp;
a257cdd0 AG	174
	175	dprintk("nfsd: ACCESS(2acl) %s 0x%x\n",
	176	SVCFH_fmt(&argp->fh),
	177	argp->access);
	178
	179	fh_copy(&resp->fh, &argp->fh);
	180	resp->access = argp->access;
f0af2210 CL	181	resp->status = nfsd_access(rqstp, &resp->fh, &resp->access, NULL);
	182	if (resp->status != nfs_ok)
	183	goto out;
	184	resp->status = fh_getattr(&resp->fh, &resp->stat);
	185	out:
cc028a10	186	return rpc_success;
a257cdd0 AG	187	}
	188
	189	/*
	190	* XDR decode functions
	191	*/
dcc46991	192
c44b31c2	193	static bool
16c66364	194	nfsaclsvc_decode_getaclargs(struct svc_rqst rqstp, struct xdr_stream xdr)
a257cdd0	195	{
026fec7e CH	196	struct nfsd3_getaclargs *argp = rqstp->rq_argp;
026fec7e CH	197
635a45d3	198	if (!svcxdr_decode_fhandle(xdr, &argp->fh))
c44b31c2	199	return false;
635a45d3	200	if (xdr_stream_decode_u32(xdr, &argp->mask) < 0)
c44b31c2	201	return false;
a257cdd0	202
c44b31c2	203	return true;
a257cdd0 AG	204	}
a257cdd0 AG	205
c44b31c2	206	static bool
16c66364	207	nfsaclsvc_decode_setaclargs(struct svc_rqst rqstp, struct xdr_stream xdr)
a257cdd0	208	{
026fec7e	209	struct nfsd3_setaclargs *argp = rqstp->rq_argp;
a257cdd0	210
427eab3b	211	if (!svcxdr_decode_fhandle(xdr, &argp->fh))
c44b31c2	212	return false;
427eab3b	213	if (xdr_stream_decode_u32(xdr, &argp->mask) < 0)
c44b31c2	214	return false;
427eab3b	215	if (argp->mask & ~NFS_ACL_MASK)
c44b31c2	216	return false;
427eab3b CL	217	if (!nfs_stream_decode_acl(xdr, NULL, (argp->mask & NFS_ACL) ?
427eab3b CL	218	&argp->acl_access : NULL))
c44b31c2	219	return false;
427eab3b CL	220	if (!nfs_stream_decode_acl(xdr, NULL, (argp->mask & NFS_DFACL) ?
427eab3b CL	221	&argp->acl_default : NULL))
c44b31c2	222	return false;
a257cdd0	223
c44b31c2	224	return true;
a257cdd0 AG	225	}
a257cdd0 AG	226
c44b31c2	227	static bool
16c66364	228	nfsaclsvc_decode_accessargs(struct svc_rqst rqstp, struct xdr_stream xdr)
a257cdd0	229	{
64063892	230	struct nfsd3_accessargs *args = rqstp->rq_argp;
026fec7e	231
64063892	232	if (!svcxdr_decode_fhandle(xdr, &args->fh))
c44b31c2	233	return false;
64063892	234	if (xdr_stream_decode_u32(xdr, &args->access) < 0)
c44b31c2	235	return false;
a257cdd0	236
c44b31c2	237	return true;
a257cdd0 AG	238	}
	239
	240	/*
	241	* XDR encode functions
	242	*/
	243
	244	/* GETACL */
130e2054	245	static bool
fda49441	246	nfsaclsvc_encode_getaclres(struct svc_rqst rqstp, struct xdr_stream xdr)
a257cdd0	247	{
63f8de37	248	struct nfsd3_getaclres *resp = rqstp->rq_resp;
a257cdd0	249	struct dentry *dentry = resp->fh.fh_dentry;
aefa89d1	250	struct inode *inode;
a257cdd0	251
f8cba473	252	if (!svcxdr_encode_stat(xdr, resp->status))
5f7b839d	253	return false;
f0af2210	254
2b0143b5	255	if (dentry == NULL \|\| d_really_is_negative(dentry))
5f7b839d	256	return true;
2b0143b5	257	inode = d_inode(dentry);
a257cdd0	258
f8cba473	259	if (!svcxdr_encode_fattr(rqstp, xdr, &resp->fh, &resp->stat))
5f7b839d	260	return false;
f8cba473	261	if (xdr_stream_encode_u32(xdr, resp->mask) < 0)
5f7b839d	262	return false;
a257cdd0	263
f8cba473 CL	264	if (!nfs_stream_encode_acl(xdr, inode, resp->acl_access,
f8cba473 CL	265	resp->mask & NFS_ACL, 0))
5f7b839d	266	return false;
f8cba473 CL	267	if (!nfs_stream_encode_acl(xdr, inode, resp->acl_default,
f8cba473 CL	268	resp->mask & NFS_DFACL, NFS_ACL_DEFAULT))
5f7b839d	269	return false;
f8cba473	270
5f7b839d	271	return true;
a257cdd0 AG	272	}
a257cdd0 AG	273
a257cdd0	274	/* ACCESS */
130e2054	275	static bool
fda49441	276	nfsaclsvc_encode_accessres(struct svc_rqst rqstp, struct xdr_stream xdr)
a257cdd0	277	{
63f8de37 CH	278	struct nfsd3_accessres *resp = rqstp->rq_resp;
63f8de37 CH	279
07f5c296	280	if (!svcxdr_encode_stat(xdr, resp->status))
5f7b839d	281	return false;
07f5c296 CL	282	switch (resp->status) {
	283	case nfs_ok:
	284	if (!svcxdr_encode_fattr(rqstp, xdr, &resp->fh, &resp->stat))
5f7b839d	285	return false;
07f5c296	286	if (xdr_stream_encode_u32(xdr, resp->access) < 0)
5f7b839d	287	return false;
07f5c296 CL	288	break;
07f5c296 CL	289	}
f0af2210	290
5f7b839d	291	return true;
a257cdd0 AG	292	}
	293
	294	/*
	295	* XDR release functions
	296	*/
8537488b	297	static void nfsaclsvc_release_getacl(struct svc_rqst *rqstp)
a257cdd0	298	{
8537488b CH	299	struct nfsd3_getaclres *resp = rqstp->rq_resp;
8537488b CH	300
a257cdd0 AG	301	fh_put(&resp->fh);
	302	posix_acl_release(resp->acl_access);
	303	posix_acl_release(resp->acl_default);
a257cdd0 AG	304	}
a257cdd0 AG	305
8537488b	306	static void nfsaclsvc_release_access(struct svc_rqst *rqstp)
c9ce2283	307	{
8537488b CH	308	struct nfsd3_accessres *resp = rqstp->rq_resp;
	309
	310	fh_put(&resp->fh);
c9ce2283 GB	311	}
c9ce2283 GB	312
a257cdd0 AG	313	#define ST 1 /* status*/
	314	#define AT 21 /* attributes */
	315	#define pAT (1+AT) /* post attributes - conditional */
	316	#define ACL (1+NFS_ACL_MAX_ENTRIES3) / Access Control List */
	317
ba1df797 CL	318	static const struct svc_procedure nfsd_acl_procedures2[5] = {
	319	[ACLPROC2_NULL] = {
	320	.pc_func = nfsacld_proc_null,
788f7183 CL	321	.pc_decode = nfssvc_decode_voidarg,
	322	.pc_encode = nfssvc_encode_voidres,
	323	.pc_argsize = sizeof(struct nfsd_voidargs),
103cc1fa	324	.pc_argzero = sizeof(struct nfsd_voidargs),
788f7183	325	.pc_ressize = sizeof(struct nfsd_voidres),
ba1df797 CL	326	.pc_cachetype = RC_NOCACHE,
ba1df797 CL	327	.pc_xdrressize = ST,
2289e87b	328	.pc_name = "NULL",
ba1df797 CL	329	},
	330	[ACLPROC2_GETACL] = {
	331	.pc_func = nfsacld_proc_getacl,
	332	.pc_decode = nfsaclsvc_decode_getaclargs,
	333	.pc_encode = nfsaclsvc_encode_getaclres,
	334	.pc_release = nfsaclsvc_release_getacl,
	335	.pc_argsize = sizeof(struct nfsd3_getaclargs),
103cc1fa	336	.pc_argzero = sizeof(struct nfsd3_getaclargs),
ba1df797 CL	337	.pc_ressize = sizeof(struct nfsd3_getaclres),
	338	.pc_cachetype = RC_NOCACHE,
	339	.pc_xdrressize = ST+1+2*(1+ACL),
2289e87b	340	.pc_name = "GETACL",
ba1df797 CL	341	},
	342	[ACLPROC2_SETACL] = {
	343	.pc_func = nfsacld_proc_setacl,
	344	.pc_decode = nfsaclsvc_decode_setaclargs,
778f068f CL	345	.pc_encode = nfssvc_encode_attrstatres,
778f068f CL	346	.pc_release = nfssvc_release_attrstat,
ba1df797	347	.pc_argsize = sizeof(struct nfsd3_setaclargs),
103cc1fa	348	.pc_argzero = sizeof(struct nfsd3_setaclargs),
ba1df797 CL	349	.pc_ressize = sizeof(struct nfsd_attrstat),
	350	.pc_cachetype = RC_NOCACHE,
	351	.pc_xdrressize = ST+AT,
2289e87b	352	.pc_name = "SETACL",
ba1df797 CL	353	},
	354	[ACLPROC2_GETATTR] = {
	355	.pc_func = nfsacld_proc_getattr,
571d31f3	356	.pc_decode = nfssvc_decode_fhandleargs,
8d2009a1 CL	357	.pc_encode = nfssvc_encode_attrstatres,
8d2009a1 CL	358	.pc_release = nfssvc_release_attrstat,
ba1df797	359	.pc_argsize = sizeof(struct nfsd_fhandle),
103cc1fa	360	.pc_argzero = sizeof(struct nfsd_fhandle),
ba1df797 CL	361	.pc_ressize = sizeof(struct nfsd_attrstat),
	362	.pc_cachetype = RC_NOCACHE,
	363	.pc_xdrressize = ST+AT,
2289e87b	364	.pc_name = "GETATTR",
ba1df797 CL	365	},
	366	[ACLPROC2_ACCESS] = {
	367	.pc_func = nfsacld_proc_access,
	368	.pc_decode = nfsaclsvc_decode_accessargs,
	369	.pc_encode = nfsaclsvc_encode_accessres,
	370	.pc_release = nfsaclsvc_release_access,
	371	.pc_argsize = sizeof(struct nfsd3_accessargs),
103cc1fa	372	.pc_argzero = sizeof(struct nfsd3_accessargs),
ba1df797 CL	373	.pc_ressize = sizeof(struct nfsd3_accessres),
	374	.pc_cachetype = RC_NOCACHE,
	375	.pc_xdrressize = ST+AT+1,
2289e87b	376	.pc_name = "SETATTR",
ba1df797	377	},
a257cdd0 AG	378	};
a257cdd0 AG	379
65ba3d24 CL	380	static DEFINE_PER_CPU_ALIGNED(unsigned long,
65ba3d24 CL	381	nfsd_acl_count2[ARRAY_SIZE(nfsd_acl_procedures2)]);
e9679189 CH	382	const struct svc_version nfsd_acl_version2 = {
e9679189 CH	383	.vs_vers = 2,
65ba3d24	384	.vs_nproc = ARRAY_SIZE(nfsd_acl_procedures2),
e9679189 CH	385	.vs_proc = nfsd_acl_procedures2,
	386	.vs_count = nfsd_acl_count2,
	387	.vs_dispatch = nfsd_dispatch,
	388	.vs_xdrsize = NFS3_SVC_XDRSIZE,
a257cdd0	389	};