2 * Process version 2 NFSACL requests.
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)
34 struct posix_acl *acl;
37 dprintk("nfsd: GETACL(2acl) %s\n", SVCFH_fmt(&argp->fh));
39 fh = fh_copy(&resp->fh, &argp->fh);
40 nfserr = fh_verify(rqstp, &resp->fh, 0, NFSD_MAY_NOP);
42 RETURN_STATUS(nfserr);
44 if (argp->mask & ~(NFS_ACL|NFS_ACLCNT|NFS_DFACL|NFS_DFACLCNT))
45 RETURN_STATUS(nfserr_inval);
46 resp->mask = argp->mask;
48 if (resp->mask & (NFS_ACL|NFS_ACLCNT)) {
49 acl = nfsd_get_posix_acl(fh, ACL_TYPE_ACCESS);
51 int err = PTR_ERR(acl);
53 if (err == -ENODATA || err == -EOPNOTSUPP)
56 nfserr = nfserrno(err);
61 /* Solaris returns the inode's minimum ACL. */
63 struct inode *inode = fh->fh_dentry->d_inode;
64 acl = posix_acl_from_mode(inode->i_mode, GFP_KERNEL);
66 resp->acl_access = acl;
68 if (resp->mask & (NFS_DFACL|NFS_DFACLCNT)) {
69 /* Check how Solaris handles requests for the Default ACL
70 of a non-directory! */
72 acl = nfsd_get_posix_acl(fh, ACL_TYPE_DEFAULT);
74 int err = PTR_ERR(acl);
76 if (err == -ENODATA || err == -EOPNOTSUPP)
79 nfserr = nfserrno(err);
83 resp->acl_default = acl;
86 /* resp->acl_{access,default} are released in nfssvc_release_getacl. */
90 posix_acl_release(resp->acl_access);
91 posix_acl_release(resp->acl_default);
92 RETURN_STATUS(nfserr);
96 * Set the Access and/or Default ACL of a file.
98 static __be32 nfsacld_proc_setacl(struct svc_rqst * rqstp,
99 struct nfsd3_setaclargs *argp,
100 struct nfsd_attrstat *resp)
105 dprintk("nfsd: SETACL(2acl) %s\n", SVCFH_fmt(&argp->fh));
107 fh = fh_copy(&resp->fh, &argp->fh);
108 nfserr = fh_verify(rqstp, &resp->fh, 0, NFSD_MAY_SATTR);
111 nfserr = nfserrno( nfsd_set_posix_acl(
112 fh, ACL_TYPE_ACCESS, argp->acl_access) );
115 nfserr = nfserrno( nfsd_set_posix_acl(
116 fh, ACL_TYPE_DEFAULT, argp->acl_default) );
119 /* argp->acl_{access,default} may have been allocated in
120 nfssvc_decode_setaclargs. */
121 posix_acl_release(argp->acl_access);
122 posix_acl_release(argp->acl_default);
127 * Check file attributes
129 static __be32 nfsacld_proc_getattr(struct svc_rqst * rqstp,
130 struct nfsd_fhandle *argp, struct nfsd_attrstat *resp)
132 dprintk("nfsd: GETATTR %s\n", SVCFH_fmt(&argp->fh));
134 fh_copy(&resp->fh, &argp->fh);
135 return fh_verify(rqstp, &resp->fh, 0, NFSD_MAY_NOP);
141 static __be32 nfsacld_proc_access(struct svc_rqst *rqstp, struct nfsd3_accessargs *argp,
142 struct nfsd3_accessres *resp)
146 dprintk("nfsd: ACCESS(2acl) %s 0x%x\n",
147 SVCFH_fmt(&argp->fh),
150 fh_copy(&resp->fh, &argp->fh);
151 resp->access = argp->access;
152 nfserr = nfsd_access(rqstp, &resp->fh, &resp->access, NULL);
157 * XDR decode functions
159 static int nfsaclsvc_decode_getaclargs(struct svc_rqst *rqstp, __be32 *p,
160 struct nfsd3_getaclargs *argp)
162 if (!(p = nfs2svc_decode_fh(p, &argp->fh)))
164 argp->mask = ntohl(*p); p++;
166 return xdr_argsize_check(rqstp, p);
170 static int nfsaclsvc_decode_setaclargs(struct svc_rqst *rqstp, __be32 *p,
171 struct nfsd3_setaclargs *argp)
173 struct kvec *head = rqstp->rq_arg.head;
177 if (!(p = nfs2svc_decode_fh(p, &argp->fh)))
179 argp->mask = ntohl(*p++);
180 if (argp->mask & ~(NFS_ACL|NFS_ACLCNT|NFS_DFACL|NFS_DFACLCNT) ||
181 !xdr_argsize_check(rqstp, p))
184 base = (char *)p - (char *)head->iov_base;
185 n = nfsacl_decode(&rqstp->rq_arg, base, NULL,
186 (argp->mask & NFS_ACL) ?
187 &argp->acl_access : NULL);
189 n = nfsacl_decode(&rqstp->rq_arg, base + n, NULL,
190 (argp->mask & NFS_DFACL) ?
191 &argp->acl_default : NULL);
195 static int nfsaclsvc_decode_fhandleargs(struct svc_rqst *rqstp, __be32 *p,
196 struct nfsd_fhandle *argp)
198 if (!(p = nfs2svc_decode_fh(p, &argp->fh)))
200 return xdr_argsize_check(rqstp, p);
203 static int nfsaclsvc_decode_accessargs(struct svc_rqst *rqstp, __be32 *p,
204 struct nfsd3_accessargs *argp)
206 if (!(p = nfs2svc_decode_fh(p, &argp->fh)))
208 argp->access = ntohl(*p++);
210 return xdr_argsize_check(rqstp, p);
214 * XDR encode functions
218 * There must be an encoding function for void results so svc_process
219 * will work properly.
222 nfsaclsvc_encode_voidres(struct svc_rqst *rqstp, __be32 *p, void *dummy)
224 return xdr_ressize_check(rqstp, p);
228 static int nfsaclsvc_encode_getaclres(struct svc_rqst *rqstp, __be32 *p,
229 struct nfsd3_getaclres *resp)
231 struct dentry *dentry = resp->fh.fh_dentry;
233 struct kvec *head = rqstp->rq_res.head;
239 * Since this is version 2, the check for nfserr in
240 * nfsd_dispatch actually ensures the following cannot happen.
241 * However, it seems fragile to depend on that.
243 if (dentry == NULL || dentry->d_inode == NULL)
245 inode = dentry->d_inode;
247 p = nfs2svc_encode_fattr(rqstp, p, &resp->fh);
248 *p++ = htonl(resp->mask);
249 if (!xdr_ressize_check(rqstp, p))
251 base = (char *)p - (char *)head->iov_base;
253 rqstp->rq_res.page_len = w = nfsacl_size(
254 (resp->mask & NFS_ACL) ? resp->acl_access : NULL,
255 (resp->mask & NFS_DFACL) ? resp->acl_default : NULL);
257 if (!rqstp->rq_respages[rqstp->rq_resused++])
262 n = nfsacl_encode(&rqstp->rq_res, base, inode,
264 resp->mask & NFS_ACL, 0);
266 n = nfsacl_encode(&rqstp->rq_res, base + n, inode,
268 resp->mask & NFS_DFACL,
275 static int nfsaclsvc_encode_attrstatres(struct svc_rqst *rqstp, __be32 *p,
276 struct nfsd_attrstat *resp)
278 p = nfs2svc_encode_fattr(rqstp, p, &resp->fh);
279 return xdr_ressize_check(rqstp, p);
283 static int nfsaclsvc_encode_accessres(struct svc_rqst *rqstp, __be32 *p,
284 struct nfsd3_accessres *resp)
286 p = nfs2svc_encode_fattr(rqstp, p, &resp->fh);
287 *p++ = htonl(resp->access);
288 return xdr_ressize_check(rqstp, p);
292 * XDR release functions
294 static int nfsaclsvc_release_getacl(struct svc_rqst *rqstp, __be32 *p,
295 struct nfsd3_getaclres *resp)
298 posix_acl_release(resp->acl_access);
299 posix_acl_release(resp->acl_default);
303 static int nfsaclsvc_release_attrstat(struct svc_rqst *rqstp, __be32 *p,
304 struct nfsd_attrstat *resp)
310 static int nfsaclsvc_release_access(struct svc_rqst *rqstp, __be32 *p,
311 struct nfsd3_accessres *resp)
317 #define nfsaclsvc_decode_voidargs NULL
318 #define nfsaclsvc_release_void NULL
319 #define nfsd3_fhandleargs nfsd_fhandle
320 #define nfsd3_attrstatres nfsd_attrstat
321 #define nfsd3_voidres nfsd3_voidargs
322 struct nfsd3_voidargs { int dummy; };
324 #define PROC(name, argt, rest, relt, cache, respsize) \
325 { (svc_procfunc) nfsacld_proc_##name, \
326 (kxdrproc_t) nfsaclsvc_decode_##argt##args, \
327 (kxdrproc_t) nfsaclsvc_encode_##rest##res, \
328 (kxdrproc_t) nfsaclsvc_release_##relt, \
329 sizeof(struct nfsd3_##argt##args), \
330 sizeof(struct nfsd3_##rest##res), \
336 #define ST 1 /* status*/
337 #define AT 21 /* attributes */
338 #define pAT (1+AT) /* post attributes - conditional */
339 #define ACL (1+NFS_ACL_MAX_ENTRIES*3) /* Access Control List */
341 static struct svc_procedure nfsd_acl_procedures2[] = {
342 PROC(null, void, void, void, RC_NOCACHE, ST),
343 PROC(getacl, getacl, getacl, getacl, RC_NOCACHE, ST+1+2*(1+ACL)),
344 PROC(setacl, setacl, attrstat, attrstat, RC_NOCACHE, ST+AT),
345 PROC(getattr, fhandle, attrstat, attrstat, RC_NOCACHE, ST+AT),
346 PROC(access, access, access, access, RC_NOCACHE, ST+AT+1),
349 struct svc_version nfsd_acl_version2 = {
352 .vs_proc = nfsd_acl_procedures2,
353 .vs_dispatch = nfsd_dispatch,
354 .vs_xdrsize = NFS3_SVC_XDRSIZE,