2 * Process version 2 NFSACL requests.
4 * Copyright (C) 2002-2003 Andreas Gruenbacher <agruen@suse.de>
8 /* FIXME: nfsacl.h is a broken header */
9 #include <linux/nfsacl.h>
10 #include <linux/gfp.h>
15 #define NFSDDBG_FACILITY NFSDDBG_PROC
16 #define RETURN_STATUS(st) { resp->status = (st); return (st); }
22 nfsacld_proc_null(struct svc_rqst
*rqstp
, void *argp
, void *resp
)
28 * Get the Access and/or Default ACL of a file.
30 static __be32
nfsacld_proc_getacl(struct svc_rqst
* rqstp
,
31 struct nfsd3_getaclargs
*argp
, struct nfsd3_getaclres
*resp
)
33 struct posix_acl
*acl
;
38 dprintk("nfsd: GETACL(2acl) %s\n", SVCFH_fmt(&argp
->fh
));
40 fh
= fh_copy(&resp
->fh
, &argp
->fh
);
41 nfserr
= fh_verify(rqstp
, &resp
->fh
, 0, NFSD_MAY_NOP
);
43 RETURN_STATUS(nfserr
);
45 inode
= fh
->fh_dentry
->d_inode
;
47 if (argp
->mask
& ~(NFS_ACL
|NFS_ACLCNT
|NFS_DFACL
|NFS_DFACLCNT
))
48 RETURN_STATUS(nfserr_inval
);
49 resp
->mask
= argp
->mask
;
51 nfserr
= fh_getattr(fh
, &resp
->stat
);
55 if (resp
->mask
& (NFS_ACL
|NFS_ACLCNT
)) {
56 acl
= get_acl(inode
, ACL_TYPE_ACCESS
);
58 nfserr
= nfserrno(PTR_ERR(acl
));
62 /* Solaris returns the inode's minimum ACL. */
63 acl
= posix_acl_from_mode(inode
->i_mode
, GFP_KERNEL
);
65 resp
->acl_access
= acl
;
67 if (resp
->mask
& (NFS_DFACL
|NFS_DFACLCNT
)) {
68 /* Check how Solaris handles requests for the Default ACL
69 of a non-directory! */
70 acl
= get_acl(inode
, ACL_TYPE_DEFAULT
);
72 nfserr
= nfserrno(PTR_ERR(acl
));
75 resp
->acl_default
= acl
;
78 /* resp->acl_{access,default} are released in nfssvc_release_getacl. */
82 posix_acl_release(resp
->acl_access
);
83 posix_acl_release(resp
->acl_default
);
84 RETURN_STATUS(nfserr
);
88 * Set the Access and/or Default ACL of a file.
90 static __be32
nfsacld_proc_setacl(struct svc_rqst
* rqstp
,
91 struct nfsd3_setaclargs
*argp
,
92 struct nfsd_attrstat
*resp
)
99 dprintk("nfsd: SETACL(2acl) %s\n", SVCFH_fmt(&argp
->fh
));
101 fh
= fh_copy(&resp
->fh
, &argp
->fh
);
102 nfserr
= fh_verify(rqstp
, &resp
->fh
, 0, NFSD_MAY_SATTR
);
106 inode
= fh
->fh_dentry
->d_inode
;
107 if (!IS_POSIXACL(inode
) || !inode
->i_op
->set_acl
) {
112 error
= fh_want_write(fh
);
116 error
= inode
->i_op
->set_acl(inode
, argp
->acl_access
, ACL_TYPE_ACCESS
);
119 error
= inode
->i_op
->set_acl(inode
, argp
->acl_default
,
126 nfserr
= fh_getattr(fh
, &resp
->stat
);
129 /* argp->acl_{access,default} may have been allocated in
130 nfssvc_decode_setaclargs. */
131 posix_acl_release(argp
->acl_access
);
132 posix_acl_release(argp
->acl_default
);
137 nfserr
= nfserrno(error
);
142 * Check file attributes
144 static __be32
nfsacld_proc_getattr(struct svc_rqst
* rqstp
,
145 struct nfsd_fhandle
*argp
, struct nfsd_attrstat
*resp
)
148 dprintk("nfsd: GETATTR %s\n", SVCFH_fmt(&argp
->fh
));
150 fh_copy(&resp
->fh
, &argp
->fh
);
151 nfserr
= fh_verify(rqstp
, &resp
->fh
, 0, NFSD_MAY_NOP
);
154 nfserr
= fh_getattr(&resp
->fh
, &resp
->stat
);
161 static __be32
nfsacld_proc_access(struct svc_rqst
*rqstp
, struct nfsd3_accessargs
*argp
,
162 struct nfsd3_accessres
*resp
)
166 dprintk("nfsd: ACCESS(2acl) %s 0x%x\n",
167 SVCFH_fmt(&argp
->fh
),
170 fh_copy(&resp
->fh
, &argp
->fh
);
171 resp
->access
= argp
->access
;
172 nfserr
= nfsd_access(rqstp
, &resp
->fh
, &resp
->access
, NULL
);
175 nfserr
= fh_getattr(&resp
->fh
, &resp
->stat
);
180 * XDR decode functions
182 static int nfsaclsvc_decode_getaclargs(struct svc_rqst
*rqstp
, __be32
*p
,
183 struct nfsd3_getaclargs
*argp
)
185 if (!(p
= nfs2svc_decode_fh(p
, &argp
->fh
)))
187 argp
->mask
= ntohl(*p
); p
++;
189 return xdr_argsize_check(rqstp
, p
);
193 static int nfsaclsvc_decode_setaclargs(struct svc_rqst
*rqstp
, __be32
*p
,
194 struct nfsd3_setaclargs
*argp
)
196 struct kvec
*head
= rqstp
->rq_arg
.head
;
200 if (!(p
= nfs2svc_decode_fh(p
, &argp
->fh
)))
202 argp
->mask
= ntohl(*p
++);
203 if (argp
->mask
& ~(NFS_ACL
|NFS_ACLCNT
|NFS_DFACL
|NFS_DFACLCNT
) ||
204 !xdr_argsize_check(rqstp
, p
))
207 base
= (char *)p
- (char *)head
->iov_base
;
208 n
= nfsacl_decode(&rqstp
->rq_arg
, base
, NULL
,
209 (argp
->mask
& NFS_ACL
) ?
210 &argp
->acl_access
: NULL
);
212 n
= nfsacl_decode(&rqstp
->rq_arg
, base
+ n
, NULL
,
213 (argp
->mask
& NFS_DFACL
) ?
214 &argp
->acl_default
: NULL
);
218 static int nfsaclsvc_decode_fhandleargs(struct svc_rqst
*rqstp
, __be32
*p
,
219 struct nfsd_fhandle
*argp
)
221 if (!(p
= nfs2svc_decode_fh(p
, &argp
->fh
)))
223 return xdr_argsize_check(rqstp
, p
);
226 static int nfsaclsvc_decode_accessargs(struct svc_rqst
*rqstp
, __be32
*p
,
227 struct nfsd3_accessargs
*argp
)
229 if (!(p
= nfs2svc_decode_fh(p
, &argp
->fh
)))
231 argp
->access
= ntohl(*p
++);
233 return xdr_argsize_check(rqstp
, p
);
237 * XDR encode functions
241 * There must be an encoding function for void results so svc_process
242 * will work properly.
244 static int nfsaclsvc_encode_voidres(struct svc_rqst
*rqstp
, __be32
*p
, void *dummy
)
246 return xdr_ressize_check(rqstp
, p
);
250 static int nfsaclsvc_encode_getaclres(struct svc_rqst
*rqstp
, __be32
*p
,
251 struct nfsd3_getaclres
*resp
)
253 struct dentry
*dentry
= resp
->fh
.fh_dentry
;
255 struct kvec
*head
= rqstp
->rq_res
.head
;
261 * Since this is version 2, the check for nfserr in
262 * nfsd_dispatch actually ensures the following cannot happen.
263 * However, it seems fragile to depend on that.
265 if (dentry
== NULL
|| dentry
->d_inode
== NULL
)
267 inode
= dentry
->d_inode
;
269 p
= nfs2svc_encode_fattr(rqstp
, p
, &resp
->fh
, &resp
->stat
);
270 *p
++ = htonl(resp
->mask
);
271 if (!xdr_ressize_check(rqstp
, p
))
273 base
= (char *)p
- (char *)head
->iov_base
;
275 rqstp
->rq_res
.page_len
= w
= nfsacl_size(
276 (resp
->mask
& NFS_ACL
) ? resp
->acl_access
: NULL
,
277 (resp
->mask
& NFS_DFACL
) ? resp
->acl_default
: NULL
);
279 if (!*(rqstp
->rq_next_page
++))
284 n
= nfsacl_encode(&rqstp
->rq_res
, base
, inode
,
286 resp
->mask
& NFS_ACL
, 0);
288 n
= nfsacl_encode(&rqstp
->rq_res
, base
+ n
, inode
,
290 resp
->mask
& NFS_DFACL
,
297 static int nfsaclsvc_encode_attrstatres(struct svc_rqst
*rqstp
, __be32
*p
,
298 struct nfsd_attrstat
*resp
)
300 p
= nfs2svc_encode_fattr(rqstp
, p
, &resp
->fh
, &resp
->stat
);
301 return xdr_ressize_check(rqstp
, p
);
305 static int nfsaclsvc_encode_accessres(struct svc_rqst
*rqstp
, __be32
*p
,
306 struct nfsd3_accessres
*resp
)
308 p
= nfs2svc_encode_fattr(rqstp
, p
, &resp
->fh
, &resp
->stat
);
309 *p
++ = htonl(resp
->access
);
310 return xdr_ressize_check(rqstp
, p
);
314 * XDR release functions
316 static int nfsaclsvc_release_getacl(struct svc_rqst
*rqstp
, __be32
*p
,
317 struct nfsd3_getaclres
*resp
)
320 posix_acl_release(resp
->acl_access
);
321 posix_acl_release(resp
->acl_default
);
325 static int nfsaclsvc_release_attrstat(struct svc_rqst
*rqstp
, __be32
*p
,
326 struct nfsd_attrstat
*resp
)
332 static int nfsaclsvc_release_access(struct svc_rqst
*rqstp
, __be32
*p
,
333 struct nfsd3_accessres
*resp
)
339 #define nfsaclsvc_decode_voidargs NULL
340 #define nfsaclsvc_release_void NULL
341 #define nfsd3_fhandleargs nfsd_fhandle
342 #define nfsd3_attrstatres nfsd_attrstat
343 #define nfsd3_voidres nfsd3_voidargs
344 struct nfsd3_voidargs
{ int dummy
; };
346 #define PROC(name, argt, rest, relt, cache, respsize) \
347 { (svc_procfunc) nfsacld_proc_##name, \
348 (kxdrproc_t) nfsaclsvc_decode_##argt##args, \
349 (kxdrproc_t) nfsaclsvc_encode_##rest##res, \
350 (kxdrproc_t) nfsaclsvc_release_##relt, \
351 sizeof(struct nfsd3_##argt##args), \
352 sizeof(struct nfsd3_##rest##res), \
358 #define ST 1 /* status*/
359 #define AT 21 /* attributes */
360 #define pAT (1+AT) /* post attributes - conditional */
361 #define ACL (1+NFS_ACL_MAX_ENTRIES*3) /* Access Control List */
363 static struct svc_procedure nfsd_acl_procedures2
[] = {
364 PROC(null
, void, void, void, RC_NOCACHE
, ST
),
365 PROC(getacl
, getacl
, getacl
, getacl
, RC_NOCACHE
, ST
+1+2*(1+ACL
)),
366 PROC(setacl
, setacl
, attrstat
, attrstat
, RC_NOCACHE
, ST
+AT
),
367 PROC(getattr
, fhandle
, attrstat
, attrstat
, RC_NOCACHE
, ST
+AT
),
368 PROC(access
, access
, access
, access
, RC_NOCACHE
, ST
+AT
+1),
371 struct svc_version nfsd_acl_version2
= {
374 .vs_proc
= nfsd_acl_procedures2
,
375 .vs_dispatch
= nfsd_dispatch
,
376 .vs_xdrsize
= NFS3_SVC_XDRSIZE
,