* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
-
-#include <linux/param.h>
-#include <linux/major.h>
-#include <linux/slab.h>
#include <linux/file.h>
-#include <linux/sunrpc/svc.h>
-#include <linux/nfsd/nfsd.h>
-#include <linux/nfsd/cache.h>
-#include <linux/nfs4.h>
-#include <linux/nfsd/state.h>
-#include <linux/nfsd/xdr4.h>
-#include <linux/nfs4_acl.h>
+#include "cache.h"
+#include "xdr4.h"
+#include "vfs.h"
#define NFSDDBG_FACILITY NFSDDBG_PROC
+static u32 nfsd_attrmask[] = {
+ NFSD_WRITEABLE_ATTRS_WORD0,
+ NFSD_WRITEABLE_ATTRS_WORD1,
+ NFSD_WRITEABLE_ATTRS_WORD2
+};
+
+static u32 nfsd41_ex_attrmask[] = {
+ NFSD_SUPPATTR_EXCLCREAT_WORD0,
+ NFSD_SUPPATTR_EXCLCREAT_WORD1,
+ NFSD_SUPPATTR_EXCLCREAT_WORD2
+};
+
+static __be32
+check_attr_support(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
+ u32 *bmval, u32 *writable)
+{
+ struct dentry *dentry = cstate->current_fh.fh_dentry;
+
+ /*
+ * Check about attributes are supported by the NFSv4 server or not.
+ * According to spec, unsupported attributes return ERR_ATTRNOTSUPP.
+ */
+ if ((bmval[0] & ~nfsd_suppattrs0(cstate->minorversion)) ||
+ (bmval[1] & ~nfsd_suppattrs1(cstate->minorversion)) ||
+ (bmval[2] & ~nfsd_suppattrs2(cstate->minorversion)))
+ return nfserr_attrnotsupp;
+
+ /*
+ * Check FATTR4_WORD0_ACL can be supported
+ * in current environment or not.
+ */
+ if (bmval[0] & FATTR4_WORD0_ACL) {
+ if (!IS_POSIXACL(dentry->d_inode))
+ return nfserr_attrnotsupp;
+ }
+
+ /*
+ * According to spec, read-only attributes return ERR_INVAL.
+ */
+ if (writable) {
+ if ((bmval[0] & ~writable[0]) || (bmval[1] & ~writable[1]) ||
+ (bmval[2] & ~writable[2]))
+ return nfserr_inval;
+ }
+
+ return nfs_ok;
+}
+
+static __be32
+nfsd4_check_open_attributes(struct svc_rqst *rqstp,
+ struct nfsd4_compound_state *cstate, struct nfsd4_open *open)
+{
+ __be32 status = nfs_ok;
+
+ if (open->op_create == NFS4_OPEN_CREATE) {
+ if (open->op_createmode == NFS4_CREATE_UNCHECKED
+ || open->op_createmode == NFS4_CREATE_GUARDED)
+ status = check_attr_support(rqstp, cstate,
+ open->op_bmval, nfsd_attrmask);
+ else if (open->op_createmode == NFS4_CREATE_EXCLUSIVE4_1)
+ status = check_attr_support(rqstp, cstate,
+ open->op_bmval, nfsd41_ex_attrmask);
+ }
+
+ return status;
+}
+
+static int
+is_create_with_attrs(struct nfsd4_open *open)
+{
+ return open->op_create == NFS4_OPEN_CREATE
+ && (open->op_createmode == NFS4_CREATE_UNCHECKED
+ || open->op_createmode == NFS4_CREATE_GUARDED
+ || open->op_createmode == NFS4_CREATE_EXCLUSIVE4_1);
+}
+
+/*
+ * if error occurs when setting the acl, just clear the acl bit
+ * in the returned attr bitmap.
+ */
+static void
+do_set_nfs4_acl(struct svc_rqst *rqstp, struct svc_fh *fhp,
+ struct nfs4_acl *acl, u32 *bmval)
+{
+ __be32 status;
+
+ status = nfsd4_set_nfs4_acl(rqstp, fhp, acl);
+ if (status)
+ /*
+ * We should probably fail the whole open at this point,
+ * but we've already created the file, so it's too late;
+ * So this seems the least of evils:
+ */
+ bmval[0] &= ~FATTR4_WORD0_ACL;
+}
+
static inline void
fh_dup2(struct svc_fh *dst, struct svc_fh *src)
{
return nfserr_inval;
if (open->op_share_access & NFS4_SHARE_ACCESS_READ)
- accmode |= MAY_READ;
+ accmode |= NFSD_MAY_READ;
if (open->op_share_access & NFS4_SHARE_ACCESS_WRITE)
- accmode |= (MAY_WRITE | MAY_TRUNC);
- if (open->op_share_deny & NFS4_SHARE_DENY_WRITE)
- accmode |= MAY_WRITE;
+ accmode |= (NFSD_MAY_WRITE | NFSD_MAY_TRUNC);
+ if (open->op_share_deny & NFS4_SHARE_DENY_READ)
+ accmode |= NFSD_MAY_WRITE;
status = fh_verify(rqstp, current_fh, S_IFREG, accmode);
open->op_truncate = 0;
if (open->op_create) {
+ /* FIXME: check session persistence and pnfs flags.
+ * The nfsv4.1 spec requires the following semantics:
+ *
+ * Persistent | pNFS | Server REQUIRED | Client Allowed
+ * Reply Cache | server | |
+ * -------------+--------+-----------------+--------------------
+ * no | no | EXCLUSIVE4_1 | EXCLUSIVE4_1
+ * | | | (SHOULD)
+ * | | and EXCLUSIVE4 | or EXCLUSIVE4
+ * | | | (SHOULD NOT)
+ * no | yes | EXCLUSIVE4_1 | EXCLUSIVE4_1
+ * yes | no | GUARDED4 | GUARDED4
+ * yes | yes | GUARDED4 | GUARDED4
+ */
+
/*
* Note: create modes (UNCHECKED,GUARDED...) are the same
* in NFSv4 as in v3.
status = nfsd_create_v3(rqstp, current_fh, open->op_fname.data,
open->op_fname.len, &open->op_iattr,
&resfh, open->op_createmode,
- (u32 *)open->op_verf.data, &open->op_truncate, &created);
+ (u32 *)open->op_verf.data,
+ &open->op_truncate, &created);
+
+ /*
+ * Following rfc 3530 14.2.16, use the returned bitmask
+ * to indicate which attributes we used to store the
+ * verifier:
+ */
+ if (open->op_createmode == NFS4_CREATE_EXCLUSIVE && status == 0)
+ open->op_bmval[1] = (FATTR4_WORD1_TIME_ACCESS |
+ FATTR4_WORD1_TIME_MODIFY);
} else {
status = nfsd_lookup(rqstp, current_fh,
open->op_fname.data, open->op_fname.len, &resfh);
if (status)
goto out;
- set_change_info(&open->op_cinfo, current_fh);
+ if (is_create_with_attrs(open) && open->op_acl != NULL)
+ do_set_nfs4_acl(rqstp, &resfh, open->op_acl, open->op_bmval);
- /* set reply cache */
+ set_change_info(&open->op_cinfo, current_fh);
fh_dup2(current_fh, &resfh);
- open->op_stateowner->so_replay.rp_openfh_len = resfh.fh_handle.fh_size;
- memcpy(open->op_stateowner->so_replay.rp_openfh,
- &resfh.fh_handle.fh_base, resfh.fh_handle.fh_size);
+ /* set reply cache */
+ fh_copy_shallow(&open->op_stateowner->so_replay.rp_openfh,
+ &resfh.fh_handle);
if (!created)
- status = do_open_permission(rqstp, current_fh, open, MAY_NOP);
+ status = do_open_permission(rqstp, current_fh, open,
+ NFSD_MAY_NOP);
out:
fh_put(&resfh);
memset(&open->op_cinfo, 0, sizeof(struct nfsd4_change_info));
/* set replay cache */
- open->op_stateowner->so_replay.rp_openfh_len = current_fh->fh_handle.fh_size;
- memcpy(open->op_stateowner->so_replay.rp_openfh,
- ¤t_fh->fh_handle.fh_base,
- current_fh->fh_handle.fh_size);
+ fh_copy_shallow(&open->op_stateowner->so_replay.rp_openfh,
+ ¤t_fh->fh_handle);
open->op_truncate = (open->op_iattr.ia_valid & ATTR_SIZE) &&
(open->op_iattr.ia_size == 0);
- status = do_open_permission(rqstp, current_fh, open, MAY_OWNER_OVERRIDE);
+ status = do_open_permission(rqstp, current_fh, open,
+ NFSD_MAY_OWNER_OVERRIDE);
return status;
}
+static void
+copy_clientid(clientid_t *clid, struct nfsd4_session *session)
+{
+ struct nfsd4_sessionid *sid =
+ (struct nfsd4_sessionid *)session->se_sessionid.data;
+
+ clid->cl_boot = sid->clientid.cl_boot;
+ clid->cl_id = sid->clientid.cl_id;
+}
static __be32
nfsd4_open(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
struct nfsd4_open *open)
{
__be32 status;
+ struct nfsd4_compoundres *resp;
+
dprintk("NFSD: nfsd4_open filename %.*s op_stateowner %p\n",
(int)open->op_fname.len, open->op_fname.data,
open->op_stateowner);
if (open->op_create && open->op_claim_type != NFS4_OPEN_CLAIM_NULL)
return nfserr_inval;
+ if (nfsd4_has_session(cstate))
+ copy_clientid(&open->op_clientid, cstate->session);
+
nfs4_lock_state();
/* check seqid for replay. set nfs4_owner */
- status = nfsd4_process_open1(open);
+ resp = rqstp->rq_resp;
+ status = nfsd4_process_open1(&resp->cstate, open);
if (status == nfserr_replay_me) {
struct nfs4_replay *rp = &open->op_stateowner->so_replay;
fh_put(&cstate->current_fh);
- cstate->current_fh.fh_handle.fh_size = rp->rp_openfh_len;
- memcpy(&cstate->current_fh.fh_handle.fh_base, rp->rp_openfh,
- rp->rp_openfh_len);
- status = fh_verify(rqstp, &cstate->current_fh, 0, MAY_NOP);
+ fh_copy_shallow(&cstate->current_fh.fh_handle,
+ &rp->rp_openfh);
+ status = fh_verify(rqstp, &cstate->current_fh, 0, NFSD_MAY_NOP);
if (status)
dprintk("nfsd4_open: replay failed"
" restoring previous filehandle\n");
if (status)
goto out;
+ status = nfsd4_check_open_attributes(rqstp, cstate, open);
+ if (status)
+ goto out;
+
/* Openowner is now set, so sequence id will get bumped. Now we need
* these checks before we do any creates: */
status = nfserr_grace;
- if (nfs4_in_grace() && open->op_claim_type != NFS4_OPEN_CLAIM_PREVIOUS)
+ if (locks_in_grace() && open->op_claim_type != NFS4_OPEN_CLAIM_PREVIOUS)
goto out;
status = nfserr_no_grace;
- if (!nfs4_in_grace() && open->op_claim_type == NFS4_OPEN_CLAIM_PREVIOUS)
+ if (!locks_in_grace() && open->op_claim_type == NFS4_OPEN_CLAIM_PREVIOUS)
goto out;
switch (open->op_claim_type) {
case NFS4_OPEN_CLAIM_DELEGATE_CUR:
- status = nfserr_inval;
- if (open->op_create)
- goto out;
- /* fall through */
case NFS4_OPEN_CLAIM_NULL:
/*
* (1) set CURRENT_FH to the file being opened,
break;
case NFS4_OPEN_CLAIM_DELEGATE_PREV:
open->op_stateowner->so_confirmed = 1;
- printk("NFSD: unsupported OPEN claim type %d\n",
+ dprintk("NFSD: unsupported OPEN claim type %d\n",
open->op_claim_type);
status = nfserr_notsupp;
goto out;
default:
- printk("NFSD: Invalid OPEN claim type %d\n",
+ dprintk("NFSD: Invalid OPEN claim type %d\n",
open->op_claim_type);
status = nfserr_inval;
goto out;
* filehandle-manipulating ops.
*/
static __be32
-nfsd4_getfh(struct nfsd4_compound_state *cstate, struct svc_fh **getfh)
+nfsd4_getfh(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
+ struct svc_fh **getfh)
{
if (!cstate->current_fh.fh_dentry)
return nfserr_nofilehandle;
cstate->current_fh.fh_handle.fh_size = putfh->pf_fhlen;
memcpy(&cstate->current_fh.fh_handle.fh_base, putfh->pf_fhval,
putfh->pf_fhlen);
- return fh_verify(rqstp, &cstate->current_fh, 0, MAY_NOP);
+ return fh_verify(rqstp, &cstate->current_fh, 0, NFSD_MAY_NOP);
}
static __be32
-nfsd4_putrootfh(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate)
+nfsd4_putrootfh(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
+ void *arg)
{
__be32 status;
fh_put(&cstate->current_fh);
- status = exp_pseudoroot(rqstp->rq_client, &cstate->current_fh,
- &rqstp->rq_chandle);
+ status = exp_pseudoroot(rqstp, &cstate->current_fh);
return status;
}
static __be32
-nfsd4_restorefh(struct nfsd4_compound_state *cstate)
+nfsd4_restorefh(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
+ void *arg)
{
if (!cstate->save_fh.fh_dentry)
return nfserr_restorefh;
}
static __be32
-nfsd4_savefh(struct nfsd4_compound_state *cstate)
+nfsd4_savefh(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
+ void *arg)
{
if (!cstate->current_fh.fh_dentry)
return nfserr_nofilehandle;
fh_init(&resfh, NFS4_FHSIZE);
- status = fh_verify(rqstp, &cstate->current_fh, S_IFDIR, MAY_CREATE);
+ status = fh_verify(rqstp, &cstate->current_fh, S_IFDIR,
+ NFSD_MAY_CREATE);
if (status == nfserr_symlink)
status = nfserr_notdir;
if (status)
return status;
+ status = check_attr_support(rqstp, cstate, create->cr_bmval,
+ nfsd_attrmask);
+ if (status)
+ return status;
+
switch (create->cr_type) {
case NF4LNK:
/* ugh! we have to null-terminate the linktext, or
status = nfserr_badtype;
}
- if (!status) {
- fh_unlock(&cstate->current_fh);
- set_change_info(&create->cr_cinfo, &cstate->current_fh);
- fh_dup2(&cstate->current_fh, &resfh);
- }
+ if (status)
+ goto out;
+ if (create->cr_acl != NULL)
+ do_set_nfs4_acl(rqstp, &resfh, create->cr_acl,
+ create->cr_bmval);
+
+ fh_unlock(&cstate->current_fh);
+ set_change_info(&create->cr_cinfo, &cstate->current_fh);
+ fh_dup2(&cstate->current_fh, &resfh);
+out:
fh_put(&resfh);
return status;
}
{
__be32 status;
- status = fh_verify(rqstp, &cstate->current_fh, 0, MAY_NOP);
+ status = fh_verify(rqstp, &cstate->current_fh, 0, NFSD_MAY_NOP);
if (status)
return status;
if (getattr->ga_bmval[1] & NFSD_WRITEONLY_ATTRS_WORD1)
return nfserr_inval;
- getattr->ga_bmval[0] &= NFSD_SUPPORTED_ATTRS_WORD0;
- getattr->ga_bmval[1] &= NFSD_SUPPORTED_ATTRS_WORD1;
+ getattr->ga_bmval[0] &= nfsd_suppattrs0(cstate->minorversion);
+ getattr->ga_bmval[1] &= nfsd_suppattrs1(cstate->minorversion);
+ getattr->ga_bmval[2] &= nfsd_suppattrs2(cstate->minorversion);
getattr->ga_fhp = &cstate->current_fh;
return nfs_ok;
}
static __be32
-nfsd4_lookupp(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate)
+nfsd4_lookupp(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
+ void *arg)
{
struct svc_fh tmp_fh;
__be32 ret;
fh_init(&tmp_fh, NFS4_FHSIZE);
- if((ret = exp_pseudoroot(rqstp->rq_client, &tmp_fh,
- &rqstp->rq_chandle)) != 0)
+ ret = exp_pseudoroot(rqstp, &tmp_fh);
+ if (ret)
return ret;
if (tmp_fh.fh_dentry == cstate->current_fh.fh_dentry) {
fh_put(&tmp_fh);
nfs4_lock_state();
/* check stateid */
- if ((status = nfs4_preprocess_stateid_op(&cstate->current_fh,
- &read->rd_stateid,
- CHECK_FH | RD_STATE, &read->rd_filp))) {
+ if ((status = nfs4_preprocess_stateid_op(cstate, &read->rd_stateid,
+ RD_STATE, &read->rd_filp))) {
dprintk("NFSD: nfsd4_read: couldn't process stateid!\n");
goto out;
}
if (readdir->rd_bmval[1] & NFSD_WRITEONLY_ATTRS_WORD1)
return nfserr_inval;
- readdir->rd_bmval[0] &= NFSD_SUPPORTED_ATTRS_WORD0;
- readdir->rd_bmval[1] &= NFSD_SUPPORTED_ATTRS_WORD1;
+ readdir->rd_bmval[0] &= nfsd_suppattrs0(cstate->minorversion);
+ readdir->rd_bmval[1] &= nfsd_suppattrs1(cstate->minorversion);
+ readdir->rd_bmval[2] &= nfsd_suppattrs2(cstate->minorversion);
if ((cookie > ~(u32)0) || (cookie == 1) || (cookie == 2) ||
(cookie == 0 && memcmp(readdir->rd_verf.data, zeroverf.data, NFS4_VERIFIER_SIZE)))
{
__be32 status;
- if (nfs4_in_grace())
+ if (locks_in_grace())
return nfserr_grace;
status = nfsd_unlink(rqstp, &cstate->current_fh, 0,
remove->rm_name, remove->rm_namelen);
if (!cstate->save_fh.fh_dentry)
return status;
- if (nfs4_in_grace() && !(cstate->save_fh.fh_export->ex_flags
+ if (locks_in_grace() && !(cstate->save_fh.fh_export->ex_flags
& NFSEXP_NOSUBTREECHECK))
return nfserr_grace;
status = nfsd_rename(rqstp, &cstate->save_fh, rename->rn_sname,
}
static __be32
+nfsd4_secinfo(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
+ struct nfsd4_secinfo *secinfo)
+{
+ struct svc_fh resfh;
+ struct svc_export *exp;
+ struct dentry *dentry;
+ __be32 err;
+
+ fh_init(&resfh, NFS4_FHSIZE);
+ err = nfsd_lookup_dentry(rqstp, &cstate->current_fh,
+ secinfo->si_name, secinfo->si_namelen,
+ &exp, &dentry);
+ if (err)
+ return err;
+ if (dentry->d_inode == NULL) {
+ exp_put(exp);
+ err = nfserr_noent;
+ } else
+ secinfo->si_exp = exp;
+ dput(dentry);
+ return err;
+}
+
+static __be32
nfsd4_setattr(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
struct nfsd4_setattr *setattr)
{
if (setattr->sa_iattr.ia_valid & ATTR_SIZE) {
nfs4_lock_state();
- status = nfs4_preprocess_stateid_op(&cstate->current_fh,
- &setattr->sa_stateid, CHECK_FH | WR_STATE, NULL);
+ status = nfs4_preprocess_stateid_op(cstate,
+ &setattr->sa_stateid, WR_STATE, NULL);
nfs4_unlock_state();
if (status) {
dprintk("NFSD: nfsd4_setattr: couldn't process stateid!\n");
return status;
}
}
+ status = mnt_want_write(cstate->current_fh.fh_export->ex_path.mnt);
+ if (status)
+ return status;
status = nfs_ok;
+
+ status = check_attr_support(rqstp, cstate, setattr->sa_bmval,
+ nfsd_attrmask);
+ if (status)
+ goto out;
+
if (setattr->sa_acl != NULL)
status = nfsd4_set_nfs4_acl(rqstp, &cstate->current_fh,
setattr->sa_acl);
if (status)
- return status;
+ goto out;
status = nfsd_setattr(rqstp, &cstate->current_fh, &setattr->sa_iattr,
0, (time_t)0);
+out:
+ mnt_drop_write(cstate->current_fh.fh_export->ex_path.mnt);
return status;
}
struct file *filp = NULL;
u32 *p;
__be32 status = nfs_ok;
+ unsigned long cnt;
/* no need to check permission - this will be done in nfsd_write() */
return nfserr_inval;
nfs4_lock_state();
- status = nfs4_preprocess_stateid_op(&cstate->current_fh, stateid,
- CHECK_FH | WR_STATE, &filp);
+ status = nfs4_preprocess_stateid_op(cstate, stateid, WR_STATE, &filp);
if (filp)
get_file(filp);
nfs4_unlock_state();
return status;
}
- write->wr_bytes_written = write->wr_buflen;
+ cnt = write->wr_buflen;
write->wr_how_written = write->wr_stable_how;
p = (u32 *)write->wr_verifier.data;
*p++ = nfssvc_boot.tv_sec;
status = nfsd_write(rqstp, &cstate->current_fh, filp,
write->wr_offset, rqstp->rq_vec, write->wr_vlen,
- write->wr_buflen, &write->wr_how_written);
+ &cnt, &write->wr_how_written);
if (filp)
fput(filp);
+ write->wr_bytes_written = cnt;
+
if (status == nfserr_symlink)
status = nfserr_inval;
return status;
int count;
__be32 status;
- status = fh_verify(rqstp, &cstate->current_fh, 0, MAY_NOP);
+ status = fh_verify(rqstp, &cstate->current_fh, 0, NFSD_MAY_NOP);
+ if (status)
+ return status;
+
+ status = check_attr_support(rqstp, cstate, verify->ve_bmval, NULL);
if (status)
return status;
- if ((verify->ve_bmval[0] & ~NFSD_SUPPORTED_ATTRS_WORD0)
- || (verify->ve_bmval[1] & ~NFSD_SUPPORTED_ATTRS_WORD1))
- return nfserr_attrnotsupp;
if ((verify->ve_bmval[0] & FATTR4_WORD0_RDATTR_ERROR)
|| (verify->ve_bmval[1] & NFSD_WRITEONLY_ATTRS_WORD1))
return nfserr_inval;
cstate->current_fh.fh_export,
cstate->current_fh.fh_dentry, buf,
&count, verify->ve_bmval,
- rqstp);
+ rqstp, 0);
/* this means that nfsd4_encode_fattr() ran out of space */
if (status == nfserr_resource && count == 0)
if (status)
goto out_kfree;
- p = buf + 3;
+ /* skip bitmap */
+ p = buf + 1 + ntohl(buf[0]);
status = nfserr_not_same;
if (ntohl(*p++) != verify->ve_attrlen)
goto out_kfree;
nfsdstats.nfs4_opcount[opnum]++;
}
-static void cstate_free(struct nfsd4_compound_state *cstate)
-{
- if (cstate == NULL)
- return;
- fh_put(&cstate->current_fh);
- fh_put(&cstate->save_fh);
- BUG_ON(cstate->replay_owner);
- kfree(cstate);
-}
+typedef __be32(*nfsd4op_func)(struct svc_rqst *, struct nfsd4_compound_state *,
+ void *);
+enum nfsd4_op_flags {
+ ALLOWED_WITHOUT_FH = 1 << 0, /* No current filehandle required */
+ ALLOWED_ON_ABSENT_FS = 2 << 0, /* ops processed on absent fs */
+ ALLOWED_AS_FIRST_OP = 3 << 0, /* ops reqired first in compound */
+};
+
+struct nfsd4_operation {
+ nfsd4op_func op_func;
+ u32 op_flags;
+ char *op_name;
+};
+
+static struct nfsd4_operation nfsd4_ops[];
+
+static const char *nfsd4_op_name(unsigned opnum);
-static struct nfsd4_compound_state *cstate_alloc(void)
+/*
+ * Enforce NFSv4.1 COMPOUND ordering rules.
+ *
+ * TODO:
+ * - enforce NFS4ERR_NOT_ONLY_OP,
+ * - DESTROY_SESSION MUST be the final operation in the COMPOUND request.
+ */
+static bool nfs41_op_ordering_ok(struct nfsd4_compoundargs *args)
{
- struct nfsd4_compound_state *cstate;
-
- cstate = kmalloc(sizeof(struct nfsd4_compound_state), GFP_KERNEL);
- if (cstate == NULL)
- return NULL;
- fh_init(&cstate->current_fh, NFS4_FHSIZE);
- fh_init(&cstate->save_fh, NFS4_FHSIZE);
- cstate->replay_owner = NULL;
- return cstate;
+ if (args->minorversion && args->opcnt > 0) {
+ struct nfsd4_op *op = &args->ops[0];
+ return (op->status == nfserr_op_illegal) ||
+ (nfsd4_ops[op->opnum].op_flags & ALLOWED_AS_FIRST_OP);
+ }
+ return true;
}
/*
struct nfsd4_compoundres *resp)
{
struct nfsd4_op *op;
- struct nfsd4_compound_state *cstate = NULL;
+ struct nfsd4_operation *opdesc;
+ struct nfsd4_compound_state *cstate = &resp->cstate;
int slack_bytes;
__be32 status;
- status = nfserr_resource;
- cstate = cstate_alloc();
- if (cstate == NULL)
- goto out;
-
resp->xbuf = &rqstp->rq_res;
- resp->p = rqstp->rq_res.head[0].iov_base + rqstp->rq_res.head[0].iov_len;
+ resp->p = rqstp->rq_res.head[0].iov_base +
+ rqstp->rq_res.head[0].iov_len;
resp->tagp = resp->p;
/* reserve space for: taglen, tag, and opcnt */
resp->p += 2 + XDR_QUADLEN(args->taglen);
resp->tag = args->tag;
resp->opcnt = 0;
resp->rqstp = rqstp;
+ resp->cstate.minorversion = args->minorversion;
+ resp->cstate.replay_owner = NULL;
+ fh_init(&resp->cstate.current_fh, NFS4_FHSIZE);
+ fh_init(&resp->cstate.save_fh, NFS4_FHSIZE);
+ /* Use the deferral mechanism only for NFSv4.0 compounds */
+ rqstp->rq_usedeferral = (args->minorversion == 0);
/*
* According to RFC3010, this takes precedence over all other errors.
*/
status = nfserr_minor_vers_mismatch;
- if (args->minorversion > NFSD_SUPPORTED_MINOR_VERSION)
+ if (args->minorversion > nfsd_supported_minorversion)
goto out;
+ if (!nfs41_op_ordering_ok(args)) {
+ op = &args->ops[0];
+ op->status = nfserr_sequence_pos;
+ goto encode_op;
+ }
+
status = nfs_ok;
while (!status && resp->opcnt < args->opcnt) {
op = &args->ops[resp->opcnt++];
- dprintk("nfsv4 compound op #%d: %d\n", resp->opcnt, op->opnum);
-
+ dprintk("nfsv4 compound op #%d/%d: %d (%s)\n",
+ resp->opcnt, args->opcnt, op->opnum,
+ nfsd4_op_name(op->opnum));
/*
* The XDR decode routines may have pre-set op->status;
* for example, if there is a miscellaneous XDR error
goto encode_op;
}
- /* All operations except RENEW, SETCLIENTID, RESTOREFH
- * SETCLIENTID_CONFIRM, PUTFH and PUTROOTFH
- * require a valid current filehandle
- */
+ opdesc = &nfsd4_ops[op->opnum];
+
if (!cstate->current_fh.fh_dentry) {
- if (!((op->opnum == OP_PUTFH) ||
- (op->opnum == OP_PUTROOTFH) ||
- (op->opnum == OP_SETCLIENTID) ||
- (op->opnum == OP_SETCLIENTID_CONFIRM) ||
- (op->opnum == OP_RENEW) ||
- (op->opnum == OP_RESTOREFH) ||
- (op->opnum == OP_RELEASE_LOCKOWNER))) {
+ if (!(opdesc->op_flags & ALLOWED_WITHOUT_FH)) {
op->status = nfserr_nofilehandle;
goto encode_op;
}
- }
- /* Check must be done at start of each operation, except
- * for GETATTR and ops not listed as returning NFS4ERR_MOVED
- */
- else if (cstate->current_fh.fh_export->ex_fslocs.migrated &&
- !((op->opnum == OP_GETATTR) ||
- (op->opnum == OP_PUTROOTFH) ||
- (op->opnum == OP_PUTPUBFH) ||
- (op->opnum == OP_RENEW) ||
- (op->opnum == OP_SETCLIENTID) ||
- (op->opnum == OP_RELEASE_LOCKOWNER))) {
+ } else if (cstate->current_fh.fh_export->ex_fslocs.migrated &&
+ !(opdesc->op_flags & ALLOWED_ON_ABSENT_FS)) {
op->status = nfserr_moved;
goto encode_op;
}
- switch (op->opnum) {
- case OP_ACCESS:
- op->status = nfsd4_access(rqstp, cstate,
- &op->u.access);
- break;
- case OP_CLOSE:
- op->status = nfsd4_close(rqstp, cstate,
- &op->u.close);
- break;
- case OP_COMMIT:
- op->status = nfsd4_commit(rqstp, cstate,
- &op->u.commit);
- break;
- case OP_CREATE:
- op->status = nfsd4_create(rqstp, cstate,
- &op->u.create);
- break;
- case OP_DELEGRETURN:
- op->status = nfsd4_delegreturn(rqstp, cstate,
- &op->u.delegreturn);
- break;
- case OP_GETATTR:
- op->status = nfsd4_getattr(rqstp, cstate,
- &op->u.getattr);
- break;
- case OP_GETFH:
- op->status = nfsd4_getfh(cstate, &op->u.getfh);
- break;
- case OP_LINK:
- op->status = nfsd4_link(rqstp, cstate, &op->u.link);
- break;
- case OP_LOCK:
- op->status = nfsd4_lock(rqstp, cstate, &op->u.lock);
- break;
- case OP_LOCKT:
- op->status = nfsd4_lockt(rqstp, cstate, &op->u.lockt);
- break;
- case OP_LOCKU:
- op->status = nfsd4_locku(rqstp, cstate, &op->u.locku);
- break;
- case OP_LOOKUP:
- op->status = nfsd4_lookup(rqstp, cstate,
- &op->u.lookup);
- break;
- case OP_LOOKUPP:
- op->status = nfsd4_lookupp(rqstp, cstate);
- break;
- case OP_NVERIFY:
- op->status = nfsd4_nverify(rqstp, cstate,
- &op->u.nverify);
- break;
- case OP_OPEN:
- op->status = nfsd4_open(rqstp, cstate,
- &op->u.open);
- break;
- case OP_OPEN_CONFIRM:
- op->status = nfsd4_open_confirm(rqstp, cstate,
- &op->u.open_confirm);
- break;
- case OP_OPEN_DOWNGRADE:
- op->status = nfsd4_open_downgrade(rqstp, cstate,
- &op->u.open_downgrade);
- break;
- case OP_PUTFH:
- op->status = nfsd4_putfh(rqstp, cstate, &op->u.putfh);
- break;
- case OP_PUTROOTFH:
- op->status = nfsd4_putrootfh(rqstp, cstate);
- break;
- case OP_READ:
- op->status = nfsd4_read(rqstp, cstate, &op->u.read);
- break;
- case OP_READDIR:
- op->status = nfsd4_readdir(rqstp, cstate,
- &op->u.readdir);
- break;
- case OP_READLINK:
- op->status = nfsd4_readlink(rqstp, cstate,
- &op->u.readlink);
- break;
- case OP_REMOVE:
- op->status = nfsd4_remove(rqstp, cstate,
- &op->u.remove);
- break;
- case OP_RENAME:
- op->status = nfsd4_rename(rqstp, cstate,
- &op->u.rename);
- break;
- case OP_RENEW:
- op->status = nfsd4_renew(&op->u.renew);
- break;
- case OP_RESTOREFH:
- op->status = nfsd4_restorefh(cstate);
- break;
- case OP_SAVEFH:
- op->status = nfsd4_savefh(cstate);
- break;
- case OP_SETATTR:
- op->status = nfsd4_setattr(rqstp, cstate,
- &op->u.setattr);
- break;
- case OP_SETCLIENTID:
- op->status = nfsd4_setclientid(rqstp, &op->u.setclientid);
- break;
- case OP_SETCLIENTID_CONFIRM:
- op->status = nfsd4_setclientid_confirm(rqstp, &op->u.setclientid_confirm);
- break;
- case OP_VERIFY:
- op->status = nfsd4_verify(rqstp, cstate,
- &op->u.verify);
- break;
- case OP_WRITE:
- op->status = nfsd4_write(rqstp, cstate, &op->u.write);
- break;
- case OP_RELEASE_LOCKOWNER:
- op->status = nfsd4_release_lockowner(rqstp, &op->u.release_lockowner);
- break;
- default:
+
+ if (opdesc->op_func)
+ op->status = opdesc->op_func(rqstp, cstate, &op->u);
+ else
BUG_ON(op->status == nfs_ok);
- break;
- }
encode_op:
+ /* Only from SEQUENCE */
+ if (resp->cstate.status == nfserr_replay_cache) {
+ dprintk("%s NFS4.1 replay from cache\n", __func__);
+ status = op->status;
+ goto out;
+ }
if (op->status == nfserr_replay_me) {
op->replay = &cstate->replay_owner->so_replay;
nfsd4_encode_replay(resp, op);
nfsd4_encode_operation(resp, op);
status = op->status;
}
+
+ dprintk("nfsv4 compound op %p opcnt %d #%d: %d: status %d\n",
+ args->ops, args->opcnt, resp->opcnt, op->opnum,
+ be32_to_cpu(status));
+
if (cstate->replay_owner) {
nfs4_put_stateowner(cstate->replay_owner);
cstate->replay_owner = NULL;
nfsd4_increment_op_stats(op->opnum);
}
+ if (!rqstp->rq_usedeferral && status == nfserr_dropit) {
+ dprintk("%s Dropit - send NFS4ERR_DELAY\n", __func__);
+ status = nfserr_jukebox;
+ }
+ resp->cstate.status = status;
+ fh_put(&resp->cstate.current_fh);
+ fh_put(&resp->cstate.save_fh);
+ BUG_ON(resp->cstate.replay_owner);
out:
nfsd4_release_compoundargs(args);
- cstate_free(cstate);
+ /* Reset deferral mechanism for RPC deferrals */
+ rqstp->rq_usedeferral = 1;
+ dprintk("nfsv4 compound returned %d\n", ntohl(status));
return status;
}
-#define nfs4svc_decode_voidargs NULL
-#define nfs4svc_release_void NULL
+static struct nfsd4_operation nfsd4_ops[] = {
+ [OP_ACCESS] = {
+ .op_func = (nfsd4op_func)nfsd4_access,
+ .op_name = "OP_ACCESS",
+ },
+ [OP_CLOSE] = {
+ .op_func = (nfsd4op_func)nfsd4_close,
+ .op_name = "OP_CLOSE",
+ },
+ [OP_COMMIT] = {
+ .op_func = (nfsd4op_func)nfsd4_commit,
+ .op_name = "OP_COMMIT",
+ },
+ [OP_CREATE] = {
+ .op_func = (nfsd4op_func)nfsd4_create,
+ .op_name = "OP_CREATE",
+ },
+ [OP_DELEGRETURN] = {
+ .op_func = (nfsd4op_func)nfsd4_delegreturn,
+ .op_name = "OP_DELEGRETURN",
+ },
+ [OP_GETATTR] = {
+ .op_func = (nfsd4op_func)nfsd4_getattr,
+ .op_flags = ALLOWED_ON_ABSENT_FS,
+ .op_name = "OP_GETATTR",
+ },
+ [OP_GETFH] = {
+ .op_func = (nfsd4op_func)nfsd4_getfh,
+ .op_name = "OP_GETFH",
+ },
+ [OP_LINK] = {
+ .op_func = (nfsd4op_func)nfsd4_link,
+ .op_name = "OP_LINK",
+ },
+ [OP_LOCK] = {
+ .op_func = (nfsd4op_func)nfsd4_lock,
+ .op_name = "OP_LOCK",
+ },
+ [OP_LOCKT] = {
+ .op_func = (nfsd4op_func)nfsd4_lockt,
+ .op_name = "OP_LOCKT",
+ },
+ [OP_LOCKU] = {
+ .op_func = (nfsd4op_func)nfsd4_locku,
+ .op_name = "OP_LOCKU",
+ },
+ [OP_LOOKUP] = {
+ .op_func = (nfsd4op_func)nfsd4_lookup,
+ .op_name = "OP_LOOKUP",
+ },
+ [OP_LOOKUPP] = {
+ .op_func = (nfsd4op_func)nfsd4_lookupp,
+ .op_name = "OP_LOOKUPP",
+ },
+ [OP_NVERIFY] = {
+ .op_func = (nfsd4op_func)nfsd4_nverify,
+ .op_name = "OP_NVERIFY",
+ },
+ [OP_OPEN] = {
+ .op_func = (nfsd4op_func)nfsd4_open,
+ .op_name = "OP_OPEN",
+ },
+ [OP_OPEN_CONFIRM] = {
+ .op_func = (nfsd4op_func)nfsd4_open_confirm,
+ .op_name = "OP_OPEN_CONFIRM",
+ },
+ [OP_OPEN_DOWNGRADE] = {
+ .op_func = (nfsd4op_func)nfsd4_open_downgrade,
+ .op_name = "OP_OPEN_DOWNGRADE",
+ },
+ [OP_PUTFH] = {
+ .op_func = (nfsd4op_func)nfsd4_putfh,
+ .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS,
+ .op_name = "OP_PUTFH",
+ },
+ [OP_PUTPUBFH] = {
+ .op_func = (nfsd4op_func)nfsd4_putrootfh,
+ .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS,
+ .op_name = "OP_PUTPUBFH",
+ },
+ [OP_PUTROOTFH] = {
+ .op_func = (nfsd4op_func)nfsd4_putrootfh,
+ .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS,
+ .op_name = "OP_PUTROOTFH",
+ },
+ [OP_READ] = {
+ .op_func = (nfsd4op_func)nfsd4_read,
+ .op_name = "OP_READ",
+ },
+ [OP_READDIR] = {
+ .op_func = (nfsd4op_func)nfsd4_readdir,
+ .op_name = "OP_READDIR",
+ },
+ [OP_READLINK] = {
+ .op_func = (nfsd4op_func)nfsd4_readlink,
+ .op_name = "OP_READLINK",
+ },
+ [OP_REMOVE] = {
+ .op_func = (nfsd4op_func)nfsd4_remove,
+ .op_name = "OP_REMOVE",
+ },
+ [OP_RENAME] = {
+ .op_name = "OP_RENAME",
+ .op_func = (nfsd4op_func)nfsd4_rename,
+ },
+ [OP_RENEW] = {
+ .op_func = (nfsd4op_func)nfsd4_renew,
+ .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS,
+ .op_name = "OP_RENEW",
+ },
+ [OP_RESTOREFH] = {
+ .op_func = (nfsd4op_func)nfsd4_restorefh,
+ .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS,
+ .op_name = "OP_RESTOREFH",
+ },
+ [OP_SAVEFH] = {
+ .op_func = (nfsd4op_func)nfsd4_savefh,
+ .op_name = "OP_SAVEFH",
+ },
+ [OP_SECINFO] = {
+ .op_func = (nfsd4op_func)nfsd4_secinfo,
+ .op_name = "OP_SECINFO",
+ },
+ [OP_SETATTR] = {
+ .op_func = (nfsd4op_func)nfsd4_setattr,
+ .op_name = "OP_SETATTR",
+ },
+ [OP_SETCLIENTID] = {
+ .op_func = (nfsd4op_func)nfsd4_setclientid,
+ .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS,
+ .op_name = "OP_SETCLIENTID",
+ },
+ [OP_SETCLIENTID_CONFIRM] = {
+ .op_func = (nfsd4op_func)nfsd4_setclientid_confirm,
+ .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS,
+ .op_name = "OP_SETCLIENTID_CONFIRM",
+ },
+ [OP_VERIFY] = {
+ .op_func = (nfsd4op_func)nfsd4_verify,
+ .op_name = "OP_VERIFY",
+ },
+ [OP_WRITE] = {
+ .op_func = (nfsd4op_func)nfsd4_write,
+ .op_name = "OP_WRITE",
+ },
+ [OP_RELEASE_LOCKOWNER] = {
+ .op_func = (nfsd4op_func)nfsd4_release_lockowner,
+ .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS,
+ .op_name = "OP_RELEASE_LOCKOWNER",
+ },
+
+ /* NFSv4.1 operations */
+ [OP_EXCHANGE_ID] = {
+ .op_func = (nfsd4op_func)nfsd4_exchange_id,
+ .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_AS_FIRST_OP,
+ .op_name = "OP_EXCHANGE_ID",
+ },
+ [OP_CREATE_SESSION] = {
+ .op_func = (nfsd4op_func)nfsd4_create_session,
+ .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_AS_FIRST_OP,
+ .op_name = "OP_CREATE_SESSION",
+ },
+ [OP_DESTROY_SESSION] = {
+ .op_func = (nfsd4op_func)nfsd4_destroy_session,
+ .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_AS_FIRST_OP,
+ .op_name = "OP_DESTROY_SESSION",
+ },
+ [OP_SEQUENCE] = {
+ .op_func = (nfsd4op_func)nfsd4_sequence,
+ .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_AS_FIRST_OP,
+ .op_name = "OP_SEQUENCE",
+ },
+};
+
+static const char *nfsd4_op_name(unsigned opnum)
+{
+ if (opnum < ARRAY_SIZE(nfsd4_ops))
+ return nfsd4_ops[opnum].op_name;
+ return "unknown_operation";
+}
+
#define nfsd4_voidres nfsd4_voidargs
-#define nfs4svc_release_compound NULL
struct nfsd4_voidargs { int dummy; };
-#define PROC(name, argt, rest, relt, cache, respsize) \
- { (svc_procfunc) nfsd4_proc_##name, \
- (kxdrproc_t) nfs4svc_decode_##argt##args, \
- (kxdrproc_t) nfs4svc_encode_##rest##res, \
- (kxdrproc_t) nfs4svc_release_##relt, \
- sizeof(struct nfsd4_##argt##args), \
- sizeof(struct nfsd4_##rest##res), \
- 0, \
- cache, \
- respsize, \
- }
-
/*
* TODO: At the present time, the NFSv4 server does not do XID caching
* of requests. Implementing XID caching would not be a serious problem,
* better XID's.
*/
static struct svc_procedure nfsd_procedures4[2] = {
- PROC(null, void, void, void, RC_NOCACHE, 1),
- PROC(compound, compound, compound, compound, RC_NOCACHE, NFSD_BUFSIZE/4)
+ [NFSPROC4_NULL] = {
+ .pc_func = (svc_procfunc) nfsd4_proc_null,
+ .pc_encode = (kxdrproc_t) nfs4svc_encode_voidres,
+ .pc_argsize = sizeof(struct nfsd4_voidargs),
+ .pc_ressize = sizeof(struct nfsd4_voidres),
+ .pc_cachetype = RC_NOCACHE,
+ .pc_xdrressize = 1,
+ },
+ [NFSPROC4_COMPOUND] = {
+ .pc_func = (svc_procfunc) nfsd4_proc_compound,
+ .pc_decode = (kxdrproc_t) nfs4svc_decode_compoundargs,
+ .pc_encode = (kxdrproc_t) nfs4svc_encode_compoundres,
+ .pc_argsize = sizeof(struct nfsd4_compoundargs),
+ .pc_ressize = sizeof(struct nfsd4_compoundres),
+ .pc_cachetype = RC_NOCACHE,
+ .pc_xdrressize = NFSD_BUFSIZE/4,
+ },
};
struct svc_version nfsd_version4 = {
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff