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
= d_inode(fh
->fh_dentry
);
47 if (argp
->mask
& ~NFS_ACL_MASK
)
48 RETURN_STATUS(nfserr_inval
);
49 resp
->mask
= argp
->mask
;
51 nfserr
= fh_getattr(fh
, &resp
->stat
);
53 RETURN_STATUS(nfserr
);
55 if (resp
->mask
& (NFS_ACL
|NFS_ACLCNT
)) {
56 acl
= get_acl(inode
, ACL_TYPE_ACCESS
);
58 /* Solaris returns the inode's minimum ACL. */
59 acl
= posix_acl_from_mode(inode
->i_mode
, GFP_KERNEL
);
62 nfserr
= nfserrno(PTR_ERR(acl
));
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
= d_inode(fh
->fh_dentry
);
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 p
= nfs2svc_decode_fh(p
, &argp
->fh
);
188 argp
->mask
= ntohl(*p
); p
++;
190 return xdr_argsize_check(rqstp
, p
);
194 static int nfsaclsvc_decode_setaclargs(struct svc_rqst
*rqstp
, __be32
*p
,
195 struct nfsd3_setaclargs
*argp
)
197 struct kvec
*head
= rqstp
->rq_arg
.head
;
201 p
= nfs2svc_decode_fh(p
, &argp
->fh
);
204 argp
->mask
= ntohl(*p
++);
205 if (argp
->mask
& ~NFS_ACL_MASK
||
206 !xdr_argsize_check(rqstp
, p
))
209 base
= (char *)p
- (char *)head
->iov_base
;
210 n
= nfsacl_decode(&rqstp
->rq_arg
, base
, NULL
,
211 (argp
->mask
& NFS_ACL
) ?
212 &argp
->acl_access
: NULL
);
214 n
= nfsacl_decode(&rqstp
->rq_arg
, base
+ n
, NULL
,
215 (argp
->mask
& NFS_DFACL
) ?
216 &argp
->acl_default
: NULL
);
220 static int nfsaclsvc_decode_fhandleargs(struct svc_rqst
*rqstp
, __be32
*p
,
221 struct nfsd_fhandle
*argp
)
223 p
= nfs2svc_decode_fh(p
, &argp
->fh
);
226 return xdr_argsize_check(rqstp
, p
);
229 static int nfsaclsvc_decode_accessargs(struct svc_rqst
*rqstp
, __be32
*p
,
230 struct nfsd3_accessargs
*argp
)
232 p
= nfs2svc_decode_fh(p
, &argp
->fh
);
235 argp
->access
= ntohl(*p
++);
237 return xdr_argsize_check(rqstp
, p
);
241 * XDR encode functions
245 * There must be an encoding function for void results so svc_process
246 * will work properly.
248 static int nfsaclsvc_encode_voidres(struct svc_rqst
*rqstp
, __be32
*p
, void *dummy
)
250 return xdr_ressize_check(rqstp
, p
);
254 static int nfsaclsvc_encode_getaclres(struct svc_rqst
*rqstp
, __be32
*p
,
255 struct nfsd3_getaclres
*resp
)
257 struct dentry
*dentry
= resp
->fh
.fh_dentry
;
259 struct kvec
*head
= rqstp
->rq_res
.head
;
265 * Since this is version 2, the check for nfserr in
266 * nfsd_dispatch actually ensures the following cannot happen.
267 * However, it seems fragile to depend on that.
269 if (dentry
== NULL
|| d_really_is_negative(dentry
))
271 inode
= d_inode(dentry
);
273 p
= nfs2svc_encode_fattr(rqstp
, p
, &resp
->fh
, &resp
->stat
);
274 *p
++ = htonl(resp
->mask
);
275 if (!xdr_ressize_check(rqstp
, p
))
277 base
= (char *)p
- (char *)head
->iov_base
;
279 rqstp
->rq_res
.page_len
= w
= nfsacl_size(
280 (resp
->mask
& NFS_ACL
) ? resp
->acl_access
: NULL
,
281 (resp
->mask
& NFS_DFACL
) ? resp
->acl_default
: NULL
);
283 if (!*(rqstp
->rq_next_page
++))
288 n
= nfsacl_encode(&rqstp
->rq_res
, base
, inode
,
290 resp
->mask
& NFS_ACL
, 0);
292 n
= nfsacl_encode(&rqstp
->rq_res
, base
+ n
, inode
,
294 resp
->mask
& NFS_DFACL
,
299 static int nfsaclsvc_encode_attrstatres(struct svc_rqst
*rqstp
, __be32
*p
,
300 struct nfsd_attrstat
*resp
)
302 p
= nfs2svc_encode_fattr(rqstp
, p
, &resp
->fh
, &resp
->stat
);
303 return xdr_ressize_check(rqstp
, p
);
307 static int nfsaclsvc_encode_accessres(struct svc_rqst
*rqstp
, __be32
*p
,
308 struct nfsd3_accessres
*resp
)
310 p
= nfs2svc_encode_fattr(rqstp
, p
, &resp
->fh
, &resp
->stat
);
311 *p
++ = htonl(resp
->access
);
312 return xdr_ressize_check(rqstp
, p
);
316 * XDR release functions
318 static int nfsaclsvc_release_getacl(struct svc_rqst
*rqstp
, __be32
*p
,
319 struct nfsd3_getaclres
*resp
)
322 posix_acl_release(resp
->acl_access
);
323 posix_acl_release(resp
->acl_default
);
327 static int nfsaclsvc_release_attrstat(struct svc_rqst
*rqstp
, __be32
*p
,
328 struct nfsd_attrstat
*resp
)
334 static int nfsaclsvc_release_access(struct svc_rqst
*rqstp
, __be32
*p
,
335 struct nfsd3_accessres
*resp
)
341 #define nfsaclsvc_decode_voidargs NULL
342 #define nfsaclsvc_release_void NULL
343 #define nfsd3_fhandleargs nfsd_fhandle
344 #define nfsd3_attrstatres nfsd_attrstat
345 #define nfsd3_voidres nfsd3_voidargs
346 struct nfsd3_voidargs
{ int dummy
; };
348 #define PROC(name, argt, rest, relt, cache, respsize) \
349 { (svc_procfunc) nfsacld_proc_##name, \
350 (kxdrproc_t) nfsaclsvc_decode_##argt##args, \
351 (kxdrproc_t) nfsaclsvc_encode_##rest##res, \
352 (kxdrproc_t) nfsaclsvc_release_##relt, \
353 sizeof(struct nfsd3_##argt##args), \
354 sizeof(struct nfsd3_##rest##res), \
360 #define ST 1 /* status*/
361 #define AT 21 /* attributes */
362 #define pAT (1+AT) /* post attributes - conditional */
363 #define ACL (1+NFS_ACL_MAX_ENTRIES*3) /* Access Control List */
365 static struct svc_procedure nfsd_acl_procedures2
[] = {
366 PROC(null
, void, void, void, RC_NOCACHE
, ST
),
367 PROC(getacl
, getacl
, getacl
, getacl
, RC_NOCACHE
, ST
+1+2*(1+ACL
)),
368 PROC(setacl
, setacl
, attrstat
, attrstat
, RC_NOCACHE
, ST
+AT
),
369 PROC(getattr
, fhandle
, attrstat
, attrstat
, RC_NOCACHE
, ST
+AT
),
370 PROC(access
, access
, access
, access
, RC_NOCACHE
, ST
+AT
+1),
373 struct svc_version nfsd_acl_version2
= {
376 .vs_proc
= nfsd_acl_procedures2
,
377 .vs_dispatch
= nfsd_dispatch
,
378 .vs_xdrsize
= NFS3_SVC_XDRSIZE
,