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)
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 nfserr = fh_getattr(fh, &resp->stat);
52 if (resp->mask & (NFS_ACL|NFS_ACLCNT)) {
53 acl = nfsd_get_posix_acl(fh, ACL_TYPE_ACCESS);
55 int err = PTR_ERR(acl);
57 if (err == -ENODATA || err == -EOPNOTSUPP)
60 nfserr = nfserrno(err);
65 /* Solaris returns the inode's minimum ACL. */
67 struct inode *inode = fh->fh_dentry->d_inode;
68 acl = posix_acl_from_mode(inode->i_mode, GFP_KERNEL);
70 resp->acl_access = acl;
72 if (resp->mask & (NFS_DFACL|NFS_DFACLCNT)) {
73 /* Check how Solaris handles requests for the Default ACL
74 of a non-directory! */
76 acl = nfsd_get_posix_acl(fh, ACL_TYPE_DEFAULT);
78 int err = PTR_ERR(acl);
80 if (err == -ENODATA || err == -EOPNOTSUPP)
83 nfserr = nfserrno(err);
87 resp->acl_default = acl;
90 /* resp->acl_{access,default} are released in nfssvc_release_getacl. */
94 posix_acl_release(resp->acl_access);
95 posix_acl_release(resp->acl_default);
96 RETURN_STATUS(nfserr);
100 * Set the Access and/or Default ACL of a file.
102 static __be32 nfsacld_proc_setacl(struct svc_rqst * rqstp,
103 struct nfsd3_setaclargs *argp,
104 struct nfsd_attrstat *resp)
109 dprintk("nfsd: SETACL(2acl) %s\n", SVCFH_fmt(&argp->fh));
111 fh = fh_copy(&resp->fh, &argp->fh);
112 nfserr = fh_verify(rqstp, &resp->fh, 0, NFSD_MAY_SATTR);
115 nfserr = nfserrno( nfsd_set_posix_acl(
116 fh, ACL_TYPE_ACCESS, argp->acl_access) );
119 nfserr = nfserrno( nfsd_set_posix_acl(
120 fh, ACL_TYPE_DEFAULT, argp->acl_default) );
123 nfserr = fh_getattr(fh, &resp->stat);
126 /* argp->acl_{access,default} may have been allocated in
127 nfssvc_decode_setaclargs. */
128 posix_acl_release(argp->acl_access);
129 posix_acl_release(argp->acl_default);
134 * Check file attributes
136 static __be32 nfsacld_proc_getattr(struct svc_rqst * rqstp,
137 struct nfsd_fhandle *argp, struct nfsd_attrstat *resp)
140 dprintk("nfsd: GETATTR %s\n", SVCFH_fmt(&argp->fh));
142 fh_copy(&resp->fh, &argp->fh);
143 nfserr = fh_verify(rqstp, &resp->fh, 0, NFSD_MAY_NOP);
146 nfserr = fh_getattr(&resp->fh, &resp->stat);
153 static __be32 nfsacld_proc_access(struct svc_rqst *rqstp, struct nfsd3_accessargs *argp,
154 struct nfsd3_accessres *resp)
158 dprintk("nfsd: ACCESS(2acl) %s 0x%x\n",
159 SVCFH_fmt(&argp->fh),
162 fh_copy(&resp->fh, &argp->fh);
163 resp->access = argp->access;
164 nfserr = nfsd_access(rqstp, &resp->fh, &resp->access, NULL);
167 nfserr = fh_getattr(&resp->fh, &resp->stat);
172 * XDR decode functions
174 static int nfsaclsvc_decode_getaclargs(struct svc_rqst *rqstp, __be32 *p,
175 struct nfsd3_getaclargs *argp)
177 if (!(p = nfs2svc_decode_fh(p, &argp->fh)))
179 argp->mask = ntohl(*p); p++;
181 return xdr_argsize_check(rqstp, p);
185 static int nfsaclsvc_decode_setaclargs(struct svc_rqst *rqstp, __be32 *p,
186 struct nfsd3_setaclargs *argp)
188 struct kvec *head = rqstp->rq_arg.head;
192 if (!(p = nfs2svc_decode_fh(p, &argp->fh)))
194 argp->mask = ntohl(*p++);
195 if (argp->mask & ~(NFS_ACL|NFS_ACLCNT|NFS_DFACL|NFS_DFACLCNT) ||
196 !xdr_argsize_check(rqstp, p))
199 base = (char *)p - (char *)head->iov_base;
200 n = nfsacl_decode(&rqstp->rq_arg, base, NULL,
201 (argp->mask & NFS_ACL) ?
202 &argp->acl_access : NULL);
204 n = nfsacl_decode(&rqstp->rq_arg, base + n, NULL,
205 (argp->mask & NFS_DFACL) ?
206 &argp->acl_default : NULL);
210 static int nfsaclsvc_decode_fhandleargs(struct svc_rqst *rqstp, __be32 *p,
211 struct nfsd_fhandle *argp)
213 if (!(p = nfs2svc_decode_fh(p, &argp->fh)))
215 return xdr_argsize_check(rqstp, p);
218 static int nfsaclsvc_decode_accessargs(struct svc_rqst *rqstp, __be32 *p,
219 struct nfsd3_accessargs *argp)
221 if (!(p = nfs2svc_decode_fh(p, &argp->fh)))
223 argp->access = ntohl(*p++);
225 return xdr_argsize_check(rqstp, p);
229 * XDR encode functions
233 * There must be an encoding function for void results so svc_process
234 * will work properly.
236 static int nfsaclsvc_encode_voidres(struct svc_rqst *rqstp, __be32 *p, void *dummy)
238 return xdr_ressize_check(rqstp, p);
242 static int nfsaclsvc_encode_getaclres(struct svc_rqst *rqstp, __be32 *p,
243 struct nfsd3_getaclres *resp)
245 struct dentry *dentry = resp->fh.fh_dentry;
247 struct kvec *head = rqstp->rq_res.head;
253 * Since this is version 2, the check for nfserr in
254 * nfsd_dispatch actually ensures the following cannot happen.
255 * However, it seems fragile to depend on that.
257 if (dentry == NULL || dentry->d_inode == NULL)
259 inode = dentry->d_inode;
261 p = nfs2svc_encode_fattr(rqstp, p, &resp->fh, &resp->stat);
262 *p++ = htonl(resp->mask);
263 if (!xdr_ressize_check(rqstp, p))
265 base = (char *)p - (char *)head->iov_base;
267 rqstp->rq_res.page_len = w = nfsacl_size(
268 (resp->mask & NFS_ACL) ? resp->acl_access : NULL,
269 (resp->mask & NFS_DFACL) ? resp->acl_default : NULL);
271 if (!*(rqstp->rq_next_page++))
276 n = nfsacl_encode(&rqstp->rq_res, base, inode,
278 resp->mask & NFS_ACL, 0);
280 n = nfsacl_encode(&rqstp->rq_res, base + n, inode,
282 resp->mask & NFS_DFACL,
289 static int nfsaclsvc_encode_attrstatres(struct svc_rqst *rqstp, __be32 *p,
290 struct nfsd_attrstat *resp)
292 p = nfs2svc_encode_fattr(rqstp, p, &resp->fh, &resp->stat);
293 return xdr_ressize_check(rqstp, p);
297 static int nfsaclsvc_encode_accessres(struct svc_rqst *rqstp, __be32 *p,
298 struct nfsd3_accessres *resp)
300 p = nfs2svc_encode_fattr(rqstp, p, &resp->fh, &resp->stat);
301 *p++ = htonl(resp->access);
302 return xdr_ressize_check(rqstp, p);
306 * XDR release functions
308 static int nfsaclsvc_release_getacl(struct svc_rqst *rqstp, __be32 *p,
309 struct nfsd3_getaclres *resp)
312 posix_acl_release(resp->acl_access);
313 posix_acl_release(resp->acl_default);
317 static int nfsaclsvc_release_attrstat(struct svc_rqst *rqstp, __be32 *p,
318 struct nfsd_attrstat *resp)
324 static int nfsaclsvc_release_access(struct svc_rqst *rqstp, __be32 *p,
325 struct nfsd3_accessres *resp)
331 #define nfsaclsvc_decode_voidargs NULL
332 #define nfsaclsvc_release_void NULL
333 #define nfsd3_fhandleargs nfsd_fhandle
334 #define nfsd3_attrstatres nfsd_attrstat
335 #define nfsd3_voidres nfsd3_voidargs
336 struct nfsd3_voidargs { int dummy; };
338 #define PROC(name, argt, rest, relt, cache, respsize) \
339 { (svc_procfunc) nfsacld_proc_##name, \
340 (kxdrproc_t) nfsaclsvc_decode_##argt##args, \
341 (kxdrproc_t) nfsaclsvc_encode_##rest##res, \
342 (kxdrproc_t) nfsaclsvc_release_##relt, \
343 sizeof(struct nfsd3_##argt##args), \
344 sizeof(struct nfsd3_##rest##res), \
350 #define ST 1 /* status*/
351 #define AT 21 /* attributes */
352 #define pAT (1+AT) /* post attributes - conditional */
353 #define ACL (1+NFS_ACL_MAX_ENTRIES*3) /* Access Control List */
355 static struct svc_procedure nfsd_acl_procedures2[] = {
356 PROC(null, void, void, void, RC_NOCACHE, ST),
357 PROC(getacl, getacl, getacl, getacl, RC_NOCACHE, ST+1+2*(1+ACL)),
358 PROC(setacl, setacl, attrstat, attrstat, RC_NOCACHE, ST+AT),
359 PROC(getattr, fhandle, attrstat, attrstat, RC_NOCACHE, ST+AT),
360 PROC(access, access, access, access, RC_NOCACHE, ST+AT+1),
363 struct svc_version nfsd_acl_version2 = {
366 .vs_proc = nfsd_acl_procedures2,
367 .vs_dispatch = nfsd_dispatch,
368 .vs_xdrsize = NFS3_SVC_XDRSIZE,