status = nfserr_bad_xdr; \
goto out
-#define READ32(x) (x) = ntohl(*p++)
-#define READ64(x) do { \
- (x) = (u64)ntohl(*p++) << 32; \
- (x) |= ntohl(*p++); \
-} while (0)
#define READMEM(x,nbytes) do { \
x = (char *)p; \
p += XDR_QUADLEN(nbytes); \
bmval[2] = 0;
READ_BUF(4);
- READ32(bmlen);
+ bmlen = be32_to_cpup(p++);
if (bmlen > 1000)
goto xdr_error;
READ_BUF(bmlen << 2);
if (bmlen > 0)
- READ32(bmval[0]);
+ bmval[0] = be32_to_cpup(p++);
if (bmlen > 1)
- READ32(bmval[1]);
+ bmval[1] = be32_to_cpup(p++);
if (bmlen > 2)
- READ32(bmval[2]);
+ bmval[2] = be32_to_cpup(p++);
DECODE_TAIL;
}
{
int expected_len, len = 0;
u32 dummy32;
+ u64 sec;
char *buf;
DECODE_HEAD;
return status;
READ_BUF(4);
- READ32(expected_len);
+ expected_len = be32_to_cpup(p++);
if (bmval[0] & FATTR4_WORD0_SIZE) {
READ_BUF(8);
len += 8;
- READ64(iattr->ia_size);
+ p = xdr_decode_hyper(p, &iattr->ia_size);
iattr->ia_valid |= ATTR_SIZE;
}
if (bmval[0] & FATTR4_WORD0_ACL) {
struct nfs4_ace *ace;
READ_BUF(4); len += 4;
- READ32(nace);
+ nace = be32_to_cpup(p++);
if (nace > NFS4_ACL_MAX)
return nfserr_fbig;
(*acl)->naces = nace;
for (ace = (*acl)->aces; ace < (*acl)->aces + nace; ace++) {
READ_BUF(16); len += 16;
- READ32(ace->type);
- READ32(ace->flag);
- READ32(ace->access_mask);
- READ32(dummy32);
+ ace->type = be32_to_cpup(p++);
+ ace->flag = be32_to_cpup(p++);
+ ace->access_mask = be32_to_cpup(p++);
+ dummy32 = be32_to_cpup(p++);
READ_BUF(dummy32);
len += XDR_QUADLEN(dummy32) << 2;
READMEM(buf, dummy32);
if (bmval[1] & FATTR4_WORD1_MODE) {
READ_BUF(4);
len += 4;
- READ32(iattr->ia_mode);
+ iattr->ia_mode = be32_to_cpup(p++);
iattr->ia_mode &= (S_IFMT | S_IALLUGO);
iattr->ia_valid |= ATTR_MODE;
}
if (bmval[1] & FATTR4_WORD1_OWNER) {
READ_BUF(4);
len += 4;
- READ32(dummy32);
+ dummy32 = be32_to_cpup(p++);
READ_BUF(dummy32);
len += (XDR_QUADLEN(dummy32) << 2);
READMEM(buf, dummy32);
if (bmval[1] & FATTR4_WORD1_OWNER_GROUP) {
READ_BUF(4);
len += 4;
- READ32(dummy32);
+ dummy32 = be32_to_cpup(p++);
READ_BUF(dummy32);
len += (XDR_QUADLEN(dummy32) << 2);
READMEM(buf, dummy32);
if (bmval[1] & FATTR4_WORD1_TIME_ACCESS_SET) {
READ_BUF(4);
len += 4;
- READ32(dummy32);
+ dummy32 = be32_to_cpup(p++);
switch (dummy32) {
case NFS4_SET_TO_CLIENT_TIME:
/* We require the high 32 bits of 'seconds' to be 0, and we ignore
all 32 bits of 'nseconds'. */
READ_BUF(12);
len += 12;
- READ64(iattr->ia_atime.tv_sec);
- READ32(iattr->ia_atime.tv_nsec);
+ p = xdr_decode_hyper(p, &sec);
+ iattr->ia_atime.tv_sec = (time_t)sec;
+ iattr->ia_atime.tv_nsec = be32_to_cpup(p++);
if (iattr->ia_atime.tv_nsec >= (u32)1000000000)
return nfserr_inval;
iattr->ia_valid |= (ATTR_ATIME | ATTR_ATIME_SET);
if (bmval[1] & FATTR4_WORD1_TIME_MODIFY_SET) {
READ_BUF(4);
len += 4;
- READ32(dummy32);
+ dummy32 = be32_to_cpup(p++);
switch (dummy32) {
case NFS4_SET_TO_CLIENT_TIME:
/* We require the high 32 bits of 'seconds' to be 0, and we ignore
all 32 bits of 'nseconds'. */
READ_BUF(12);
len += 12;
- READ64(iattr->ia_mtime.tv_sec);
- READ32(iattr->ia_mtime.tv_nsec);
+ p = xdr_decode_hyper(p, &sec);
+ iattr->ia_mtime.tv_sec = sec;
+ iattr->ia_mtime.tv_nsec = be32_to_cpup(p++);
if (iattr->ia_mtime.tv_nsec >= (u32)1000000000)
return nfserr_inval;
iattr->ia_valid |= (ATTR_MTIME | ATTR_MTIME_SET);
if (bmval[2] & FATTR4_WORD2_SECURITY_LABEL) {
READ_BUF(4);
len += 4;
- READ32(dummy32); /* lfs: we don't use it */
+ dummy32 = be32_to_cpup(p++); /* lfs: we don't use it */
READ_BUF(4);
len += 4;
- READ32(dummy32); /* pi: we don't use it either */
+ dummy32 = be32_to_cpup(p++); /* pi: we don't use it either */
READ_BUF(4);
len += 4;
- READ32(dummy32);
+ dummy32 = be32_to_cpup(p++);
READ_BUF(dummy32);
if (dummy32 > NFSD4_MAX_SEC_LABEL_LEN)
return nfserr_badlabel;
DECODE_HEAD;
READ_BUF(sizeof(stateid_t));
- READ32(sid->si_generation);
+ sid->si_generation = be32_to_cpup(p++);
COPYMEM(&sid->si_opaque, sizeof(stateid_opaque_t));
DECODE_TAIL;
DECODE_HEAD;
READ_BUF(4);
- READ32(access->ac_req_access);
+ access->ac_req_access = be32_to_cpup(p++);
DECODE_TAIL;
}
/* callback_sec_params4 */
READ_BUF(4);
- READ32(nr_secflavs);
+ nr_secflavs = be32_to_cpup(p++);
if (nr_secflavs)
cbs->flavor = (u32)(-1);
else
cbs->flavor = 0;
for (i = 0; i < nr_secflavs; ++i) {
READ_BUF(4);
- READ32(dummy);
+ dummy = be32_to_cpup(p++);
switch (dummy) {
case RPC_AUTH_NULL:
/* Nothing to read */
case RPC_AUTH_UNIX:
READ_BUF(8);
/* stamp */
- READ32(dummy);
+ dummy = be32_to_cpup(p++);
/* machine name */
- READ32(dummy);
+ dummy = be32_to_cpup(p++);
READ_BUF(dummy);
SAVEMEM(machine_name, dummy);
/* uid, gid */
READ_BUF(8);
- READ32(uid);
- READ32(gid);
+ uid = be32_to_cpup(p++);
+ gid = be32_to_cpup(p++);
/* more gids */
READ_BUF(4);
- READ32(dummy);
+ dummy = be32_to_cpup(p++);
READ_BUF(dummy * 4);
if (cbs->flavor == (u32)(-1)) {
kuid_t kuid = make_kuid(&init_user_ns, uid);
"not supported!\n");
READ_BUF(8);
/* gcbp_service */
- READ32(dummy);
+ dummy = be32_to_cpup(p++);
/* gcbp_handle_from_server */
- READ32(dummy);
+ dummy = be32_to_cpup(p++);
READ_BUF(dummy);
p += XDR_QUADLEN(dummy);
/* gcbp_handle_from_client */
READ_BUF(4);
- READ32(dummy);
+ dummy = be32_to_cpup(p++);
READ_BUF(dummy);
break;
default:
DECODE_HEAD;
READ_BUF(4);
- READ32(bc->bc_cb_program);
+ bc->bc_cb_program = be32_to_cpup(p++);
nfsd4_decode_cb_sec(argp, &bc->bc_cb_sec);
DECODE_TAIL;
READ_BUF(NFS4_MAX_SESSIONID_LEN + 8);
COPYMEM(bcts->sessionid.data, NFS4_MAX_SESSIONID_LEN);
- READ32(bcts->dir);
+ bcts->dir = be32_to_cpup(p++);
/* XXX: skipping ctsa_use_conn_in_rdma_mode. Perhaps Tom Tucker
* could help us figure out we should be using it. */
DECODE_TAIL;
DECODE_HEAD;
READ_BUF(4);
- READ32(close->cl_seqid);
+ close->cl_seqid = be32_to_cpup(p++);
return nfsd4_decode_stateid(argp, &close->cl_stateid);
DECODE_TAIL;
DECODE_HEAD;
READ_BUF(12);
- READ64(commit->co_offset);
- READ32(commit->co_count);
+ p = xdr_decode_hyper(p, &commit->co_offset);
+ commit->co_count = be32_to_cpup(p++);
DECODE_TAIL;
}
DECODE_HEAD;
READ_BUF(4);
- READ32(create->cr_type);
+ create->cr_type = be32_to_cpup(p++);
switch (create->cr_type) {
case NF4LNK:
READ_BUF(4);
- READ32(create->cr_linklen);
+ create->cr_linklen = be32_to_cpup(p++);
READ_BUF(create->cr_linklen);
SAVEMEM(create->cr_linkname, create->cr_linklen);
break;
case NF4BLK:
case NF4CHR:
READ_BUF(8);
- READ32(create->cr_specdata1);
- READ32(create->cr_specdata2);
+ create->cr_specdata1 = be32_to_cpup(p++);
+ create->cr_specdata2 = be32_to_cpup(p++);
break;
case NF4SOCK:
case NF4FIFO:
}
READ_BUF(4);
- READ32(create->cr_namelen);
+ create->cr_namelen = be32_to_cpup(p++);
READ_BUF(create->cr_namelen);
SAVEMEM(create->cr_name, create->cr_namelen);
if ((status = check_filename(create->cr_name, create->cr_namelen)))
DECODE_HEAD;
READ_BUF(4);
- READ32(link->li_namelen);
+ link->li_namelen = be32_to_cpup(p++);
READ_BUF(link->li_namelen);
SAVEMEM(link->li_name, link->li_namelen);
if ((status = check_filename(link->li_name, link->li_namelen)))
* type, reclaim(boolean), offset, length, new_lock_owner(boolean)
*/
READ_BUF(28);
- READ32(lock->lk_type);
+ lock->lk_type = be32_to_cpup(p++);
if ((lock->lk_type < NFS4_READ_LT) || (lock->lk_type > NFS4_WRITEW_LT))
goto xdr_error;
- READ32(lock->lk_reclaim);
- READ64(lock->lk_offset);
- READ64(lock->lk_length);
- READ32(lock->lk_is_new);
+ lock->lk_reclaim = be32_to_cpup(p++);
+ p = xdr_decode_hyper(p, &lock->lk_offset);
+ p = xdr_decode_hyper(p, &lock->lk_length);
+ lock->lk_is_new = be32_to_cpup(p++);
if (lock->lk_is_new) {
READ_BUF(4);
- READ32(lock->lk_new_open_seqid);
+ lock->lk_new_open_seqid = be32_to_cpup(p++);
status = nfsd4_decode_stateid(argp, &lock->lk_new_open_stateid);
if (status)
return status;
READ_BUF(8 + sizeof(clientid_t));
- READ32(lock->lk_new_lock_seqid);
+ lock->lk_new_lock_seqid = be32_to_cpup(p++);
COPYMEM(&lock->lk_new_clientid, sizeof(clientid_t));
- READ32(lock->lk_new_owner.len);
+ lock->lk_new_owner.len = be32_to_cpup(p++);
READ_BUF(lock->lk_new_owner.len);
READMEM(lock->lk_new_owner.data, lock->lk_new_owner.len);
} else {
if (status)
return status;
READ_BUF(4);
- READ32(lock->lk_old_lock_seqid);
+ lock->lk_old_lock_seqid = be32_to_cpup(p++);
}
DECODE_TAIL;
DECODE_HEAD;
READ_BUF(32);
- READ32(lockt->lt_type);
+ lockt->lt_type = be32_to_cpup(p++);
if((lockt->lt_type < NFS4_READ_LT) || (lockt->lt_type > NFS4_WRITEW_LT))
goto xdr_error;
- READ64(lockt->lt_offset);
- READ64(lockt->lt_length);
+ p = xdr_decode_hyper(p, &lockt->lt_offset);
+ p = xdr_decode_hyper(p, &lockt->lt_length);
COPYMEM(&lockt->lt_clientid, 8);
- READ32(lockt->lt_owner.len);
+ lockt->lt_owner.len = be32_to_cpup(p++);
READ_BUF(lockt->lt_owner.len);
READMEM(lockt->lt_owner.data, lockt->lt_owner.len);
DECODE_HEAD;
READ_BUF(8);
- READ32(locku->lu_type);
+ locku->lu_type = be32_to_cpup(p++);
if ((locku->lu_type < NFS4_READ_LT) || (locku->lu_type > NFS4_WRITEW_LT))
goto xdr_error;
- READ32(locku->lu_seqid);
+ locku->lu_seqid = be32_to_cpup(p++);
status = nfsd4_decode_stateid(argp, &locku->lu_stateid);
if (status)
return status;
READ_BUF(16);
- READ64(locku->lu_offset);
- READ64(locku->lu_length);
+ p = xdr_decode_hyper(p, &locku->lu_offset);
+ p = xdr_decode_hyper(p, &locku->lu_length);
DECODE_TAIL;
}
DECODE_HEAD;
READ_BUF(4);
- READ32(lookup->lo_len);
+ lookup->lo_len = be32_to_cpup(p++);
READ_BUF(lookup->lo_len);
SAVEMEM(lookup->lo_name, lookup->lo_len);
if ((status = check_filename(lookup->lo_name, lookup->lo_len)))
u32 w;
READ_BUF(4);
- READ32(w);
+ w = be32_to_cpup(p++);
*share_access = w & NFS4_SHARE_ACCESS_MASK;
*deleg_want = w & NFS4_SHARE_WANT_MASK;
if (deleg_when)
__be32 *p;
READ_BUF(4);
- READ32(*x);
+ *x = be32_to_cpup(p++);
/* Note: unlinke access bits, deny bits may be zero. */
if (*x & ~NFS4_SHARE_DENY_BOTH)
return nfserr_bad_xdr;
__be32 *p;
READ_BUF(4);
- READ32(o->len);
+ o->len = be32_to_cpup(p++);
if (o->len == 0 || o->len > NFS4_OPAQUE_LIMIT)
return nfserr_bad_xdr;
open->op_xdr_error = 0;
/* seqid, share_access, share_deny, clientid, ownerlen */
READ_BUF(4);
- READ32(open->op_seqid);
+ open->op_seqid = be32_to_cpup(p++);
/* decode, yet ignore deleg_when until supported */
status = nfsd4_decode_share_access(argp, &open->op_share_access,
&open->op_deleg_want, &dummy);
if (status)
goto xdr_error;
READ_BUF(4);
- READ32(open->op_create);
+ open->op_create = be32_to_cpup(p++);
switch (open->op_create) {
case NFS4_OPEN_NOCREATE:
break;
case NFS4_OPEN_CREATE:
READ_BUF(4);
- READ32(open->op_createmode);
+ open->op_createmode = be32_to_cpup(p++);
switch (open->op_createmode) {
case NFS4_CREATE_UNCHECKED:
case NFS4_CREATE_GUARDED:
/* open_claim */
READ_BUF(4);
- READ32(open->op_claim_type);
+ open->op_claim_type = be32_to_cpup(p++);
switch (open->op_claim_type) {
case NFS4_OPEN_CLAIM_NULL:
case NFS4_OPEN_CLAIM_DELEGATE_PREV:
READ_BUF(4);
- READ32(open->op_fname.len);
+ open->op_fname.len = be32_to_cpup(p++);
READ_BUF(open->op_fname.len);
SAVEMEM(open->op_fname.data, open->op_fname.len);
if ((status = check_filename(open->op_fname.data, open->op_fname.len)))
break;
case NFS4_OPEN_CLAIM_PREVIOUS:
READ_BUF(4);
- READ32(open->op_delegate_type);
+ open->op_delegate_type = be32_to_cpup(p++);
break;
case NFS4_OPEN_CLAIM_DELEGATE_CUR:
status = nfsd4_decode_stateid(argp, &open->op_delegate_stateid);
if (status)
return status;
READ_BUF(4);
- READ32(open->op_fname.len);
+ open->op_fname.len = be32_to_cpup(p++);
READ_BUF(open->op_fname.len);
SAVEMEM(open->op_fname.data, open->op_fname.len);
if ((status = check_filename(open->op_fname.data, open->op_fname.len)))
if (status)
return status;
READ_BUF(4);
- READ32(open_conf->oc_seqid);
+ open_conf->oc_seqid = be32_to_cpup(p++);
DECODE_TAIL;
}
if (status)
return status;
READ_BUF(4);
- READ32(open_down->od_seqid);
+ open_down->od_seqid = be32_to_cpup(p++);
status = nfsd4_decode_share_access(argp, &open_down->od_share_access,
&open_down->od_deleg_want, NULL);
if (status)
DECODE_HEAD;
READ_BUF(4);
- READ32(putfh->pf_fhlen);
+ putfh->pf_fhlen = be32_to_cpup(p++);
if (putfh->pf_fhlen > NFS4_FHSIZE)
goto xdr_error;
READ_BUF(putfh->pf_fhlen);
if (status)
return status;
READ_BUF(12);
- READ64(read->rd_offset);
- READ32(read->rd_length);
+ p = xdr_decode_hyper(p, &read->rd_offset);
+ read->rd_length = be32_to_cpup(p++);
DECODE_TAIL;
}
DECODE_HEAD;
READ_BUF(24);
- READ64(readdir->rd_cookie);
+ p = xdr_decode_hyper(p, &readdir->rd_cookie);
COPYMEM(readdir->rd_verf.data, sizeof(readdir->rd_verf.data));
- READ32(readdir->rd_dircount); /* just in case you needed a useless field... */
- READ32(readdir->rd_maxcount);
+ readdir->rd_dircount = be32_to_cpup(p++);
+ readdir->rd_maxcount = be32_to_cpup(p++);
if ((status = nfsd4_decode_bitmap(argp, readdir->rd_bmval)))
goto out;
DECODE_HEAD;
READ_BUF(4);
- READ32(remove->rm_namelen);
+ remove->rm_namelen = be32_to_cpup(p++);
READ_BUF(remove->rm_namelen);
SAVEMEM(remove->rm_name, remove->rm_namelen);
if ((status = check_filename(remove->rm_name, remove->rm_namelen)))
DECODE_HEAD;
READ_BUF(4);
- READ32(rename->rn_snamelen);
+ rename->rn_snamelen = be32_to_cpup(p++);
READ_BUF(rename->rn_snamelen + 4);
SAVEMEM(rename->rn_sname, rename->rn_snamelen);
- READ32(rename->rn_tnamelen);
+ rename->rn_tnamelen = be32_to_cpup(p++);
READ_BUF(rename->rn_tnamelen);
SAVEMEM(rename->rn_tname, rename->rn_tnamelen);
if ((status = check_filename(rename->rn_sname, rename->rn_snamelen)))
DECODE_HEAD;
READ_BUF(4);
- READ32(secinfo->si_namelen);
+ secinfo->si_namelen = be32_to_cpup(p++);
READ_BUF(secinfo->si_namelen);
SAVEMEM(secinfo->si_name, secinfo->si_namelen);
status = check_filename(secinfo->si_name, secinfo->si_namelen);
DECODE_HEAD;
READ_BUF(4);
- READ32(sin->sin_style);
+ sin->sin_style = be32_to_cpup(p++);
DECODE_TAIL;
}
if (status)
return nfserr_bad_xdr;
READ_BUF(8);
- READ32(setclientid->se_callback_prog);
- READ32(setclientid->se_callback_netid_len);
+ setclientid->se_callback_prog = be32_to_cpup(p++);
+ setclientid->se_callback_netid_len = be32_to_cpup(p++);
READ_BUF(setclientid->se_callback_netid_len + 4);
SAVEMEM(setclientid->se_callback_netid_val, setclientid->se_callback_netid_len);
- READ32(setclientid->se_callback_addr_len);
+ setclientid->se_callback_addr_len = be32_to_cpup(p++);
READ_BUF(setclientid->se_callback_addr_len + 4);
SAVEMEM(setclientid->se_callback_addr_val, setclientid->se_callback_addr_len);
- READ32(setclientid->se_callback_ident);
+ setclientid->se_callback_ident = be32_to_cpup(p++);
DECODE_TAIL;
}
* nfsd4_proc_verify */
READ_BUF(4);
- READ32(verify->ve_attrlen);
+ verify->ve_attrlen = be32_to_cpup(p++);
READ_BUF(verify->ve_attrlen);
SAVEMEM(verify->ve_attrval, verify->ve_attrlen);
if (status)
return status;
READ_BUF(16);
- READ64(write->wr_offset);
- READ32(write->wr_stable_how);
+ p = xdr_decode_hyper(p, &write->wr_offset);
+ write->wr_stable_how = be32_to_cpup(p++);
if (write->wr_stable_how > 2)
goto xdr_error;
- READ32(write->wr_buflen);
+ write->wr_buflen = be32_to_cpup(p++);
/* Sorry .. no magic macros for this.. *
* READ_BUF(write->wr_buflen);
READ_BUF(12);
COPYMEM(&rlockowner->rl_clientid, sizeof(clientid_t));
- READ32(rlockowner->rl_owner.len);
+ rlockowner->rl_owner.len = be32_to_cpup(p++);
READ_BUF(rlockowner->rl_owner.len);
READMEM(rlockowner->rl_owner.data, rlockowner->rl_owner.len);
return nfserr_bad_xdr;
READ_BUF(4);
- READ32(exid->flags);
+ exid->flags = be32_to_cpup(p++);
/* Ignore state_protect4_a */
READ_BUF(4);
- READ32(exid->spa_how);
+ exid->spa_how = be32_to_cpup(p++);
switch (exid->spa_how) {
case SP4_NONE:
break;
case SP4_MACH_CRED:
/* spo_must_enforce */
READ_BUF(4);
- READ32(dummy);
+ dummy = be32_to_cpup(p++);
READ_BUF(dummy * 4);
p += dummy;
/* spo_must_allow */
READ_BUF(4);
- READ32(dummy);
+ dummy = be32_to_cpup(p++);
READ_BUF(dummy * 4);
p += dummy;
break;
case SP4_SSV:
/* ssp_ops */
READ_BUF(4);
- READ32(dummy);
+ dummy = be32_to_cpup(p++);
READ_BUF(dummy * 4);
p += dummy;
READ_BUF(4);
- READ32(dummy);
+ dummy = be32_to_cpup(p++);
READ_BUF(dummy * 4);
p += dummy;
/* ssp_hash_algs<> */
READ_BUF(4);
- READ32(tmp);
+ tmp = be32_to_cpup(p++);
while (tmp--) {
READ_BUF(4);
- READ32(dummy);
+ dummy = be32_to_cpup(p++);
READ_BUF(dummy);
p += XDR_QUADLEN(dummy);
}
/* ssp_encr_algs<> */
READ_BUF(4);
- READ32(tmp);
+ tmp = be32_to_cpup(p++);
while (tmp--) {
READ_BUF(4);
- READ32(dummy);
+ dummy = be32_to_cpup(p++);
READ_BUF(dummy);
p += XDR_QUADLEN(dummy);
}
/* ssp_window and ssp_num_gss_handles */
READ_BUF(8);
- READ32(dummy);
- READ32(dummy);
+ dummy = be32_to_cpup(p++);
+ dummy = be32_to_cpup(p++);
break;
default:
goto xdr_error;
/* Ignore Implementation ID */
READ_BUF(4); /* nfs_impl_id4 array length */
- READ32(dummy);
+ dummy = be32_to_cpup(p++);
if (dummy > 1)
goto xdr_error;
if (dummy == 1) {
/* nii_domain */
READ_BUF(4);
- READ32(dummy);
+ dummy = be32_to_cpup(p++);
READ_BUF(dummy);
p += XDR_QUADLEN(dummy);
/* nii_name */
READ_BUF(4);
- READ32(dummy);
+ dummy = be32_to_cpup(p++);
READ_BUF(dummy);
p += XDR_QUADLEN(dummy);
READ_BUF(16);
COPYMEM(&sess->clientid, 8);
- READ32(sess->seqid);
- READ32(sess->flags);
+ sess->seqid = be32_to_cpup(p++);
+ sess->flags = be32_to_cpup(p++);
/* Fore channel attrs */
READ_BUF(28);
- READ32(dummy); /* headerpadsz is always 0 */
- READ32(sess->fore_channel.maxreq_sz);
- READ32(sess->fore_channel.maxresp_sz);
- READ32(sess->fore_channel.maxresp_cached);
- READ32(sess->fore_channel.maxops);
- READ32(sess->fore_channel.maxreqs);
- READ32(sess->fore_channel.nr_rdma_attrs);
+ dummy = be32_to_cpup(p++); /* headerpadsz is always 0 */
+ sess->fore_channel.maxreq_sz = be32_to_cpup(p++);
+ sess->fore_channel.maxresp_sz = be32_to_cpup(p++);
+ sess->fore_channel.maxresp_cached = be32_to_cpup(p++);
+ sess->fore_channel.maxops = be32_to_cpup(p++);
+ sess->fore_channel.maxreqs = be32_to_cpup(p++);
+ sess->fore_channel.nr_rdma_attrs = be32_to_cpup(p++);
if (sess->fore_channel.nr_rdma_attrs == 1) {
READ_BUF(4);
- READ32(sess->fore_channel.rdma_attrs);
+ sess->fore_channel.rdma_attrs = be32_to_cpup(p++);
} else if (sess->fore_channel.nr_rdma_attrs > 1) {
dprintk("Too many fore channel attr bitmaps!\n");
goto xdr_error;
/* Back channel attrs */
READ_BUF(28);
- READ32(dummy); /* headerpadsz is always 0 */
- READ32(sess->back_channel.maxreq_sz);
- READ32(sess->back_channel.maxresp_sz);
- READ32(sess->back_channel.maxresp_cached);
- READ32(sess->back_channel.maxops);
- READ32(sess->back_channel.maxreqs);
- READ32(sess->back_channel.nr_rdma_attrs);
+ dummy = be32_to_cpup(p++); /* headerpadsz is always 0 */
+ sess->back_channel.maxreq_sz = be32_to_cpup(p++);
+ sess->back_channel.maxresp_sz = be32_to_cpup(p++);
+ sess->back_channel.maxresp_cached = be32_to_cpup(p++);
+ sess->back_channel.maxops = be32_to_cpup(p++);
+ sess->back_channel.maxreqs = be32_to_cpup(p++);
+ sess->back_channel.nr_rdma_attrs = be32_to_cpup(p++);
if (sess->back_channel.nr_rdma_attrs == 1) {
READ_BUF(4);
- READ32(sess->back_channel.rdma_attrs);
+ sess->back_channel.rdma_attrs = be32_to_cpup(p++);
} else if (sess->back_channel.nr_rdma_attrs > 1) {
dprintk("Too many back channel attr bitmaps!\n");
goto xdr_error;
}
READ_BUF(4);
- READ32(sess->callback_prog);
+ sess->callback_prog = be32_to_cpup(p++);
nfsd4_decode_cb_sec(argp, &sess->cb_sec);
DECODE_TAIL;
}
DECODE_HEAD;
READ_BUF(sizeof(stateid_t));
- READ32(free_stateid->fr_stateid.si_generation);
+ free_stateid->fr_stateid.si_generation = be32_to_cpup(p++);
COPYMEM(&free_stateid->fr_stateid.si_opaque, sizeof(stateid_opaque_t));
DECODE_TAIL;
READ_BUF(NFS4_MAX_SESSIONID_LEN + 16);
COPYMEM(seq->sessionid.data, NFS4_MAX_SESSIONID_LEN);
- READ32(seq->seqid);
- READ32(seq->slotid);
- READ32(seq->maxslots);
- READ32(seq->cachethis);
+ seq->seqid = be32_to_cpup(p++);
+ seq->slotid = be32_to_cpup(p++);
+ seq->maxslots = be32_to_cpup(p++);
+ seq->cachethis = be32_to_cpup(p++);
DECODE_TAIL;
}
DECODE_HEAD;
READ_BUF(4);
- READ32(rc->rca_one_fs);
+ rc->rca_one_fs = be32_to_cpup(p++);
DECODE_TAIL;
}
return true;
}
-/*
- * Return a rough estimate of the maximum possible reply size. Note the
- * estimate includes rpc headers so is meant to be passed to
- * svc_reserve, not svc_reserve_auth.
- *
- * Also note the current compound encoding permits only one operation to
- * use pages beyond the first one, so the maximum possible length is the
- * maximum over these values, not the sum.
- */
-static int nfsd4_max_reply(u32 opnum)
-{
- switch (opnum) {
- case OP_READLINK:
- case OP_READDIR:
- /*
- * Both of these ops take a single page for data and put
- * the head and tail in another page:
- */
- return 2 * PAGE_SIZE;
- case OP_READ:
- return INT_MAX;
- default:
- return PAGE_SIZE;
- }
-}
-
static __be32
nfsd4_decode_compound(struct nfsd4_compoundargs *argp)
{
DECODE_HEAD;
struct nfsd4_op *op;
bool cachethis = false;
- int max_reply = PAGE_SIZE;
+ int auth_slack= argp->rqstp->rq_auth_slack;
+ int max_reply = auth_slack + 8; /* opcnt, status */
+ int readcount = 0;
+ int readbytes = 0;
int i;
READ_BUF(4);
- READ32(argp->taglen);
+ argp->taglen = be32_to_cpup(p++);
READ_BUF(argp->taglen + 8);
SAVEMEM(argp->tag, argp->taglen);
- READ32(argp->minorversion);
- READ32(argp->opcnt);
+ argp->minorversion = be32_to_cpup(p++);
+ argp->opcnt = be32_to_cpup(p++);
+ max_reply += 4 + (XDR_QUADLEN(argp->taglen) << 2);
if (argp->taglen > NFSD4_MAX_TAGLEN)
goto xdr_error;
op->replay = NULL;
READ_BUF(4);
- READ32(op->opnum);
+ op->opnum = be32_to_cpup(p++);
if (nfsd4_opnum_in_range(argp, op))
op->status = nfsd4_dec_ops[op->opnum](argp, &op->u);
op->opnum = OP_ILLEGAL;
op->status = nfserr_op_illegal;
}
-
- if (op->status) {
- argp->opcnt = i+1;
- break;
- }
/*
* We'll try to cache the result in the DRC if any one
* op in the compound wants to be cached:
*/
cachethis |= nfsd4_cache_this_op(op);
- max_reply = max(max_reply, nfsd4_max_reply(op->opnum));
+ if (op->opnum == OP_READ) {
+ readcount++;
+ readbytes += nfsd4_max_reply(argp->rqstp, op);
+ } else
+ max_reply += nfsd4_max_reply(argp->rqstp, op);
+
+ if (op->status) {
+ argp->opcnt = i+1;
+ break;
+ }
}
/* Sessions make the DRC unnecessary: */
if (argp->minorversion)
cachethis = false;
- if (max_reply != INT_MAX)
- svc_reserve(argp->rqstp, max_reply);
+ svc_reserve(argp->rqstp, max_reply + readbytes);
argp->rqstp->rq_cachetype = cachethis ? RC_REPLBUFF : RC_NOCACHE;
- DECODE_TAIL;
-}
-
-#define WRITE32(n) *p++ = htonl(n)
-#define WRITE64(n) do { \
- *p++ = htonl((u32)((n) >> 32)); \
- *p++ = htonl((u32)(n)); \
-} while (0)
-#define WRITEMEM(ptr,nbytes) do { if (nbytes > 0) { \
- *(p + XDR_QUADLEN(nbytes) -1) = 0; \
- memcpy(p, ptr, nbytes); \
- p += XDR_QUADLEN(nbytes); \
-}} while (0)
-
-static void write32(__be32 **p, u32 n)
-{
- *(*p)++ = htonl(n);
-}
+ if (readcount > 1 || max_reply > PAGE_SIZE - auth_slack)
+ argp->rqstp->rq_splice_ok = false;
-static void write64(__be32 **p, u64 n)
-{
- write32(p, (n >> 32));
- write32(p, (u32)n);
+ DECODE_TAIL;
}
-static void write_change(__be32 **p, struct kstat *stat, struct inode *inode)
+static __be32 *encode_change(__be32 *p, struct kstat *stat, struct inode *inode)
{
if (IS_I_VERSION(inode)) {
- write64(p, inode->i_version);
+ p = xdr_encode_hyper(p, inode->i_version);
} else {
- write32(p, stat->ctime.tv_sec);
- write32(p, stat->ctime.tv_nsec);
+ *p++ = cpu_to_be32(stat->ctime.tv_sec);
+ *p++ = cpu_to_be32(stat->ctime.tv_nsec);
}
+ return p;
}
-static void write_cinfo(__be32 **p, struct nfsd4_change_info *c)
+static __be32 *encode_cinfo(__be32 *p, struct nfsd4_change_info *c)
{
- write32(p, c->atomic);
+ *p++ = cpu_to_be32(c->atomic);
if (c->change_supported) {
- write64(p, c->before_change);
- write64(p, c->after_change);
+ p = xdr_encode_hyper(p, c->before_change);
+ p = xdr_encode_hyper(p, c->after_change);
} else {
- write32(p, c->before_ctime_sec);
- write32(p, c->before_ctime_nsec);
- write32(p, c->after_ctime_sec);
- write32(p, c->after_ctime_nsec);
+ *p++ = cpu_to_be32(c->before_ctime_sec);
+ *p++ = cpu_to_be32(c->before_ctime_nsec);
+ *p++ = cpu_to_be32(c->after_ctime_sec);
+ *p++ = cpu_to_be32(c->after_ctime_nsec);
}
+ return p;
}
-#define RESERVE_SPACE(nbytes) do { \
- p = resp->p; \
- BUG_ON(p + XDR_QUADLEN(nbytes) > resp->end); \
-} while (0)
-#define ADJUST_ARGS() resp->p = p
-
/* Encode as an array of strings the string given with components
* separated @sep, escaped with esc_enter and esc_exit.
*/
-static __be32 nfsd4_encode_components_esc(char sep, char *components,
- __be32 **pp, int *buflen,
- char esc_enter, char esc_exit)
+static __be32 nfsd4_encode_components_esc(struct xdr_stream *xdr, char sep,
+ char *components, char esc_enter,
+ char esc_exit)
{
- __be32 *p = *pp;
- __be32 *countp = p;
+ __be32 *p;
+ __be32 pathlen;
+ int pathlen_offset;
int strlen, count=0;
char *str, *end, *next;
dprintk("nfsd4_encode_components(%s)\n", components);
- if ((*buflen -= 4) < 0)
+
+ pathlen_offset = xdr->buf->len;
+ p = xdr_reserve_space(xdr, 4);
+ if (!p)
return nfserr_resource;
- WRITE32(0); /* We will fill this in with @count later */
+ p++; /* We will fill this in with @count later */
+
end = str = components;
while (*end) {
bool found_esc = false;
strlen = end - str;
if (strlen) {
- if ((*buflen -= ((XDR_QUADLEN(strlen) << 2) + 4)) < 0)
+ p = xdr_reserve_space(xdr, strlen + 4);
+ if (!p)
return nfserr_resource;
- WRITE32(strlen);
- WRITEMEM(str, strlen);
+ p = xdr_encode_opaque(p, str, strlen);
count++;
}
else
end++;
str = end;
}
- *pp = p;
- p = countp;
- WRITE32(count);
+ pathlen = htonl(xdr->buf->len - pathlen_offset);
+ write_bytes_to_xdr_buf(xdr->buf, pathlen_offset, &pathlen, 4);
return 0;
}
/* Encode as an array of strings the string given with components
* separated @sep.
*/
-static __be32 nfsd4_encode_components(char sep, char *components,
- __be32 **pp, int *buflen)
+static __be32 nfsd4_encode_components(struct xdr_stream *xdr, char sep,
+ char *components)
{
- return nfsd4_encode_components_esc(sep, components, pp, buflen, 0, 0);
+ return nfsd4_encode_components_esc(xdr, sep, components, 0, 0);
}
/*
* encode a location element of a fs_locations structure
*/
-static __be32 nfsd4_encode_fs_location4(struct nfsd4_fs_location *location,
- __be32 **pp, int *buflen)
+static __be32 nfsd4_encode_fs_location4(struct xdr_stream *xdr,
+ struct nfsd4_fs_location *location)
{
__be32 status;
- __be32 *p = *pp;
- status = nfsd4_encode_components_esc(':', location->hosts, &p, buflen,
+ status = nfsd4_encode_components_esc(xdr, ':', location->hosts,
'[', ']');
if (status)
return status;
- status = nfsd4_encode_components('/', location->path, &p, buflen);
+ status = nfsd4_encode_components(xdr, '/', location->path);
if (status)
return status;
- *pp = p;
return 0;
}
/*
* Encode a path in RFC3530 'pathname4' format
*/
-static __be32 nfsd4_encode_path(const struct path *root,
- const struct path *path, __be32 **pp, int *buflen)
+static __be32 nfsd4_encode_path(struct xdr_stream *xdr,
+ const struct path *root,
+ const struct path *path)
{
struct path cur = *path;
- __be32 *p = *pp;
+ __be32 *p;
struct dentry **components = NULL;
unsigned int ncomponents = 0;
__be32 err = nfserr_jukebox;
components[ncomponents++] = cur.dentry;
cur.dentry = dget_parent(cur.dentry);
}
-
- *buflen -= 4;
- if (*buflen < 0)
+ err = nfserr_resource;
+ p = xdr_reserve_space(xdr, 4);
+ if (!p)
goto out_free;
- WRITE32(ncomponents);
+ *p++ = cpu_to_be32(ncomponents);
while (ncomponents) {
struct dentry *dentry = components[ncomponents - 1];
spin_lock(&dentry->d_lock);
len = dentry->d_name.len;
- *buflen -= 4 + (XDR_QUADLEN(len) << 2);
- if (*buflen < 0) {
+ p = xdr_reserve_space(xdr, len + 4);
+ if (!p) {
spin_unlock(&dentry->d_lock);
goto out_free;
}
- WRITE32(len);
- WRITEMEM(dentry->d_name.name, len);
+ p = xdr_encode_opaque(p, dentry->d_name.name, len);
dprintk("/%s", dentry->d_name.name);
spin_unlock(&dentry->d_lock);
dput(dentry);
ncomponents--;
}
- *pp = p;
err = 0;
out_free:
dprintk(")\n");
return err;
}
-static __be32 nfsd4_encode_fsloc_fsroot(struct svc_rqst *rqstp,
- const struct path *path, __be32 **pp, int *buflen)
+static __be32 nfsd4_encode_fsloc_fsroot(struct xdr_stream *xdr,
+ struct svc_rqst *rqstp, const struct path *path)
{
struct svc_export *exp_ps;
__be32 res;
exp_ps = rqst_find_fsidzero_export(rqstp);
if (IS_ERR(exp_ps))
return nfserrno(PTR_ERR(exp_ps));
- res = nfsd4_encode_path(&exp_ps->ex_path, path, pp, buflen);
+ res = nfsd4_encode_path(xdr, &exp_ps->ex_path, path);
exp_put(exp_ps);
return res;
}
/*
* encode a fs_locations structure
*/
-static __be32 nfsd4_encode_fs_locations(struct svc_rqst *rqstp,
- struct svc_export *exp,
- __be32 **pp, int *buflen)
+static __be32 nfsd4_encode_fs_locations(struct xdr_stream *xdr,
+ struct svc_rqst *rqstp, struct svc_export *exp)
{
__be32 status;
int i;
- __be32 *p = *pp;
+ __be32 *p;
struct nfsd4_fs_locations *fslocs = &exp->ex_fslocs;
- status = nfsd4_encode_fsloc_fsroot(rqstp, &exp->ex_path, &p, buflen);
+ status = nfsd4_encode_fsloc_fsroot(xdr, rqstp, &exp->ex_path);
if (status)
return status;
- if ((*buflen -= 4) < 0)
+ p = xdr_reserve_space(xdr, 4);
+ if (!p)
return nfserr_resource;
- WRITE32(fslocs->locations_count);
+ *p++ = cpu_to_be32(fslocs->locations_count);
for (i=0; i<fslocs->locations_count; i++) {
- status = nfsd4_encode_fs_location4(&fslocs->locations[i],
- &p, buflen);
+ status = nfsd4_encode_fs_location4(xdr, &fslocs->locations[i]);
if (status)
return status;
}
- *pp = p;
return 0;
}
}
static inline __be32
-nfsd4_encode_aclname(struct svc_rqst *rqstp, struct nfs4_ace *ace,
- __be32 **p, int *buflen)
+nfsd4_encode_aclname(struct xdr_stream *xdr, struct svc_rqst *rqstp,
+ struct nfs4_ace *ace)
{
if (ace->whotype != NFS4_ACL_WHO_NAMED)
- return nfs4_acl_write_who(ace->whotype, p, buflen);
+ return nfs4_acl_write_who(xdr, ace->whotype);
else if (ace->flag & NFS4_ACE_IDENTIFIER_GROUP)
- return nfsd4_encode_group(rqstp, ace->who_gid, p, buflen);
+ return nfsd4_encode_group(xdr, rqstp, ace->who_gid);
else
- return nfsd4_encode_user(rqstp, ace->who_uid, p, buflen);
+ return nfsd4_encode_user(xdr, rqstp, ace->who_uid);
}
#define WORD0_ABSENT_FS_ATTRS (FATTR4_WORD0_FS_LOCATIONS | FATTR4_WORD0_FSID | \
#ifdef CONFIG_NFSD_V4_SECURITY_LABEL
static inline __be32
-nfsd4_encode_security_label(struct svc_rqst *rqstp, void *context, int len, __be32 **pp, int *buflen)
+nfsd4_encode_security_label(struct xdr_stream *xdr, struct svc_rqst *rqstp,
+ void *context, int len)
{
- __be32 *p = *pp;
+ __be32 *p;
- if (*buflen < ((XDR_QUADLEN(len) << 2) + 4 + 4 + 4))
+ p = xdr_reserve_space(xdr, len + 4 + 4 + 4);
+ if (!p)
return nfserr_resource;
/*
* For now we use a 0 here to indicate the null translation; in
* the future we may place a call to translation code here.
*/
- if ((*buflen -= 8) < 0)
- return nfserr_resource;
-
- WRITE32(0); /* lfs */
- WRITE32(0); /* pi */
+ *p++ = cpu_to_be32(0); /* lfs */
+ *p++ = cpu_to_be32(0); /* pi */
p = xdr_encode_opaque(p, context, len);
- *buflen -= (XDR_QUADLEN(len) << 2) + 4;
-
- *pp = p;
return 0;
}
#else
static inline __be32
-nfsd4_encode_security_label(struct svc_rqst *rqstp, void *context, int len, __be32 **pp, int *buflen)
+nfsd4_encode_security_label(struct xdr_stream *xdr, struct svc_rqst *rqstp,
+ void *context, int len)
{ return 0; }
#endif
/*
* Note: @fhp can be NULL; in this case, we might have to compose the filehandle
* ourselves.
- *
- * countp is the buffer size in _words_
*/
-__be32
-nfsd4_encode_fattr(struct svc_fh *fhp, struct svc_export *exp,
- struct dentry *dentry, __be32 **buffer, int count, u32 *bmval,
+static __be32
+nfsd4_encode_fattr(struct xdr_stream *xdr, struct svc_fh *fhp,
+ struct svc_export *exp,
+ struct dentry *dentry, u32 *bmval,
struct svc_rqst *rqstp, int ignore_crossmnt)
{
u32 bmval0 = bmval[0];
struct kstat stat;
struct svc_fh *tempfh = NULL;
struct kstatfs statfs;
- int buflen = count << 2;
- __be32 *attrlenp;
+ __be32 *p;
+ int starting_len = xdr->buf->len;
+ int attrlen_offset;
+ __be32 attrlen;
u32 dummy;
u64 dummy64;
u32 rdattr_err = 0;
- __be32 *p = *buffer;
__be32 status;
int err;
int aclsupport = 0;
err = vfs_getattr(&path, &stat);
if (err)
goto out_nfserr;
- if ((bmval0 & (FATTR4_WORD0_FILES_FREE | FATTR4_WORD0_FILES_TOTAL |
- FATTR4_WORD0_MAXNAME)) ||
+ if ((bmval0 & (FATTR4_WORD0_FILES_AVAIL | FATTR4_WORD0_FILES_FREE |
+ FATTR4_WORD0_FILES_TOTAL | FATTR4_WORD0_MAXNAME)) ||
(bmval1 & (FATTR4_WORD1_SPACE_AVAIL | FATTR4_WORD1_SPACE_FREE |
FATTR4_WORD1_SPACE_TOTAL))) {
err = vfs_statfs(&path, &statfs);
#endif /* CONFIG_NFSD_V4_SECURITY_LABEL */
if (bmval2) {
- if ((buflen -= 16) < 0)
+ p = xdr_reserve_space(xdr, 16);
+ if (!p)
goto out_resource;
- WRITE32(3);
- WRITE32(bmval0);
- WRITE32(bmval1);
- WRITE32(bmval2);
+ *p++ = cpu_to_be32(3);
+ *p++ = cpu_to_be32(bmval0);
+ *p++ = cpu_to_be32(bmval1);
+ *p++ = cpu_to_be32(bmval2);
} else if (bmval1) {
- if ((buflen -= 12) < 0)
+ p = xdr_reserve_space(xdr, 12);
+ if (!p)
goto out_resource;
- WRITE32(2);
- WRITE32(bmval0);
- WRITE32(bmval1);
+ *p++ = cpu_to_be32(2);
+ *p++ = cpu_to_be32(bmval0);
+ *p++ = cpu_to_be32(bmval1);
} else {
- if ((buflen -= 8) < 0)
+ p = xdr_reserve_space(xdr, 8);
+ if (!p)
goto out_resource;
- WRITE32(1);
- WRITE32(bmval0);
+ *p++ = cpu_to_be32(1);
+ *p++ = cpu_to_be32(bmval0);
}
- attrlenp = p++; /* to be backfilled later */
+
+ attrlen_offset = xdr->buf->len;
+ p = xdr_reserve_space(xdr, 4);
+ if (!p)
+ goto out_resource;
+ p++; /* to be backfilled later */
if (bmval0 & FATTR4_WORD0_SUPPORTED_ATTRS) {
u32 word0 = nfsd_suppattrs0(minorversion);
if (!contextsupport)
word2 &= ~FATTR4_WORD2_SECURITY_LABEL;
if (!word2) {
- if ((buflen -= 12) < 0)
+ p = xdr_reserve_space(xdr, 12);
+ if (!p)
goto out_resource;
- WRITE32(2);
- WRITE32(word0);
- WRITE32(word1);
+ *p++ = cpu_to_be32(2);
+ *p++ = cpu_to_be32(word0);
+ *p++ = cpu_to_be32(word1);
} else {
- if ((buflen -= 16) < 0)
+ p = xdr_reserve_space(xdr, 16);
+ if (!p)
goto out_resource;
- WRITE32(3);
- WRITE32(word0);
- WRITE32(word1);
- WRITE32(word2);
+ *p++ = cpu_to_be32(3);
+ *p++ = cpu_to_be32(word0);
+ *p++ = cpu_to_be32(word1);
+ *p++ = cpu_to_be32(word2);
}
}
if (bmval0 & FATTR4_WORD0_TYPE) {
- if ((buflen -= 4) < 0)
+ p = xdr_reserve_space(xdr, 4);
+ if (!p)
goto out_resource;
dummy = nfs4_file_type(stat.mode);
if (dummy == NF4BAD) {
status = nfserr_serverfault;
goto out;
}
- WRITE32(dummy);
+ *p++ = cpu_to_be32(dummy);
}
if (bmval0 & FATTR4_WORD0_FH_EXPIRE_TYPE) {
- if ((buflen -= 4) < 0)
+ p = xdr_reserve_space(xdr, 4);
+ if (!p)
goto out_resource;
if (exp->ex_flags & NFSEXP_NOSUBTREECHECK)
- WRITE32(NFS4_FH_PERSISTENT);
+ *p++ = cpu_to_be32(NFS4_FH_PERSISTENT);
else
- WRITE32(NFS4_FH_PERSISTENT|NFS4_FH_VOL_RENAME);
+ *p++ = cpu_to_be32(NFS4_FH_PERSISTENT|
+ NFS4_FH_VOL_RENAME);
}
if (bmval0 & FATTR4_WORD0_CHANGE) {
- if ((buflen -= 8) < 0)
+ p = xdr_reserve_space(xdr, 8);
+ if (!p)
goto out_resource;
- write_change(&p, &stat, dentry->d_inode);
+ p = encode_change(p, &stat, dentry->d_inode);
}
if (bmval0 & FATTR4_WORD0_SIZE) {
- if ((buflen -= 8) < 0)
+ p = xdr_reserve_space(xdr, 8);
+ if (!p)
goto out_resource;
- WRITE64(stat.size);
+ p = xdr_encode_hyper(p, stat.size);
}
if (bmval0 & FATTR4_WORD0_LINK_SUPPORT) {
- if ((buflen -= 4) < 0)
+ p = xdr_reserve_space(xdr, 4);
+ if (!p)
goto out_resource;
- WRITE32(1);
+ *p++ = cpu_to_be32(1);
}
if (bmval0 & FATTR4_WORD0_SYMLINK_SUPPORT) {
- if ((buflen -= 4) < 0)
+ p = xdr_reserve_space(xdr, 4);
+ if (!p)
goto out_resource;
- WRITE32(1);
+ *p++ = cpu_to_be32(1);
}
if (bmval0 & FATTR4_WORD0_NAMED_ATTR) {
- if ((buflen -= 4) < 0)
+ p = xdr_reserve_space(xdr, 4);
+ if (!p)
goto out_resource;
- WRITE32(0);
+ *p++ = cpu_to_be32(0);
}
if (bmval0 & FATTR4_WORD0_FSID) {
- if ((buflen -= 16) < 0)
+ p = xdr_reserve_space(xdr, 16);
+ if (!p)
goto out_resource;
if (exp->ex_fslocs.migrated) {
- WRITE64(NFS4_REFERRAL_FSID_MAJOR);
- WRITE64(NFS4_REFERRAL_FSID_MINOR);
+ p = xdr_encode_hyper(p, NFS4_REFERRAL_FSID_MAJOR);
+ p = xdr_encode_hyper(p, NFS4_REFERRAL_FSID_MINOR);
} else switch(fsid_source(fhp)) {
case FSIDSOURCE_FSID:
- WRITE64((u64)exp->ex_fsid);
- WRITE64((u64)0);
+ p = xdr_encode_hyper(p, (u64)exp->ex_fsid);
+ p = xdr_encode_hyper(p, (u64)0);
break;
case FSIDSOURCE_DEV:
- WRITE32(0);
- WRITE32(MAJOR(stat.dev));
- WRITE32(0);
- WRITE32(MINOR(stat.dev));
+ *p++ = cpu_to_be32(0);
+ *p++ = cpu_to_be32(MAJOR(stat.dev));
+ *p++ = cpu_to_be32(0);
+ *p++ = cpu_to_be32(MINOR(stat.dev));
break;
case FSIDSOURCE_UUID:
- WRITEMEM(exp->ex_uuid, 16);
+ p = xdr_encode_opaque_fixed(p, exp->ex_uuid,
+ EX_UUID_LEN);
break;
}
}
if (bmval0 & FATTR4_WORD0_UNIQUE_HANDLES) {
- if ((buflen -= 4) < 0)
+ p = xdr_reserve_space(xdr, 4);
+ if (!p)
goto out_resource;
- WRITE32(0);
+ *p++ = cpu_to_be32(0);
}
if (bmval0 & FATTR4_WORD0_LEASE_TIME) {
- if ((buflen -= 4) < 0)
+ p = xdr_reserve_space(xdr, 4);
+ if (!p)
goto out_resource;
- WRITE32(nn->nfsd4_lease);
+ *p++ = cpu_to_be32(nn->nfsd4_lease);
}
if (bmval0 & FATTR4_WORD0_RDATTR_ERROR) {
- if ((buflen -= 4) < 0)
+ p = xdr_reserve_space(xdr, 4);
+ if (!p)
goto out_resource;
- WRITE32(rdattr_err);
+ *p++ = cpu_to_be32(rdattr_err);
}
if (bmval0 & FATTR4_WORD0_ACL) {
struct nfs4_ace *ace;
if (acl == NULL) {
- if ((buflen -= 4) < 0)
+ p = xdr_reserve_space(xdr, 4);
+ if (!p)
goto out_resource;
- WRITE32(0);
+ *p++ = cpu_to_be32(0);
goto out_acl;
}
- if ((buflen -= 4) < 0)
+ p = xdr_reserve_space(xdr, 4);
+ if (!p)
goto out_resource;
- WRITE32(acl->naces);
+ *p++ = cpu_to_be32(acl->naces);
for (ace = acl->aces; ace < acl->aces + acl->naces; ace++) {
- if ((buflen -= 4*3) < 0)
+ p = xdr_reserve_space(xdr, 4*3);
+ if (!p)
goto out_resource;
- WRITE32(ace->type);
- WRITE32(ace->flag);
- WRITE32(ace->access_mask & NFS4_ACE_MASK_ALL);
- status = nfsd4_encode_aclname(rqstp, ace, &p, &buflen);
+ *p++ = cpu_to_be32(ace->type);
+ *p++ = cpu_to_be32(ace->flag);
+ *p++ = cpu_to_be32(ace->access_mask &
+ NFS4_ACE_MASK_ALL);
+ status = nfsd4_encode_aclname(xdr, rqstp, ace);
if (status)
goto out;
}
}
out_acl:
if (bmval0 & FATTR4_WORD0_ACLSUPPORT) {
- if ((buflen -= 4) < 0)
+ p = xdr_reserve_space(xdr, 4);
+ if (!p)
goto out_resource;
- WRITE32(aclsupport ?
+ *p++ = cpu_to_be32(aclsupport ?
ACL4_SUPPORT_ALLOW_ACL|ACL4_SUPPORT_DENY_ACL : 0);
}
if (bmval0 & FATTR4_WORD0_CANSETTIME) {
- if ((buflen -= 4) < 0)
+ p = xdr_reserve_space(xdr, 4);
+ if (!p)
goto out_resource;
- WRITE32(1);
+ *p++ = cpu_to_be32(1);
}
if (bmval0 & FATTR4_WORD0_CASE_INSENSITIVE) {
- if ((buflen -= 4) < 0)
+ p = xdr_reserve_space(xdr, 4);
+ if (!p)
goto out_resource;
- WRITE32(0);
+ *p++ = cpu_to_be32(0);
}
if (bmval0 & FATTR4_WORD0_CASE_PRESERVING) {
- if ((buflen -= 4) < 0)
+ p = xdr_reserve_space(xdr, 4);
+ if (!p)
goto out_resource;
- WRITE32(1);
+ *p++ = cpu_to_be32(1);
}
if (bmval0 & FATTR4_WORD0_CHOWN_RESTRICTED) {
- if ((buflen -= 4) < 0)
+ p = xdr_reserve_space(xdr, 4);
+ if (!p)
goto out_resource;
- WRITE32(1);
+ *p++ = cpu_to_be32(1);
}
if (bmval0 & FATTR4_WORD0_FILEHANDLE) {
- buflen -= (XDR_QUADLEN(fhp->fh_handle.fh_size) << 2) + 4;
- if (buflen < 0)
+ p = xdr_reserve_space(xdr, fhp->fh_handle.fh_size + 4);
+ if (!p)
goto out_resource;
- WRITE32(fhp->fh_handle.fh_size);
- WRITEMEM(&fhp->fh_handle.fh_base, fhp->fh_handle.fh_size);
+ p = xdr_encode_opaque(p, &fhp->fh_handle.fh_base,
+ fhp->fh_handle.fh_size);
}
if (bmval0 & FATTR4_WORD0_FILEID) {
- if ((buflen -= 8) < 0)
+ p = xdr_reserve_space(xdr, 8);
+ if (!p)
goto out_resource;
- WRITE64(stat.ino);
+ p = xdr_encode_hyper(p, stat.ino);
}
if (bmval0 & FATTR4_WORD0_FILES_AVAIL) {
- if ((buflen -= 8) < 0)
+ p = xdr_reserve_space(xdr, 8);
+ if (!p)
goto out_resource;
- WRITE64((u64) statfs.f_ffree);
+ p = xdr_encode_hyper(p, (u64) statfs.f_ffree);
}
if (bmval0 & FATTR4_WORD0_FILES_FREE) {
- if ((buflen -= 8) < 0)
+ p = xdr_reserve_space(xdr, 8);
+ if (!p)
goto out_resource;
- WRITE64((u64) statfs.f_ffree);
+ p = xdr_encode_hyper(p, (u64) statfs.f_ffree);
}
if (bmval0 & FATTR4_WORD0_FILES_TOTAL) {
- if ((buflen -= 8) < 0)
+ p = xdr_reserve_space(xdr, 8);
+ if (!p)
goto out_resource;
- WRITE64((u64) statfs.f_files);
+ p = xdr_encode_hyper(p, (u64) statfs.f_files);
}
if (bmval0 & FATTR4_WORD0_FS_LOCATIONS) {
- status = nfsd4_encode_fs_locations(rqstp, exp, &p, &buflen);
+ status = nfsd4_encode_fs_locations(xdr, rqstp, exp);
if (status)
goto out;
}
if (bmval0 & FATTR4_WORD0_HOMOGENEOUS) {
- if ((buflen -= 4) < 0)
+ p = xdr_reserve_space(xdr, 4);
+ if (!p)
goto out_resource;
- WRITE32(1);
+ *p++ = cpu_to_be32(1);
}
if (bmval0 & FATTR4_WORD0_MAXFILESIZE) {
- if ((buflen -= 8) < 0)
+ p = xdr_reserve_space(xdr, 8);
+ if (!p)
goto out_resource;
- WRITE64(exp->ex_path.mnt->mnt_sb->s_maxbytes);
+ p = xdr_encode_hyper(p, exp->ex_path.mnt->mnt_sb->s_maxbytes);
}
if (bmval0 & FATTR4_WORD0_MAXLINK) {
- if ((buflen -= 4) < 0)
+ p = xdr_reserve_space(xdr, 4);
+ if (!p)
goto out_resource;
- WRITE32(255);
+ *p++ = cpu_to_be32(255);
}
if (bmval0 & FATTR4_WORD0_MAXNAME) {
- if ((buflen -= 4) < 0)
+ p = xdr_reserve_space(xdr, 4);
+ if (!p)
goto out_resource;
- WRITE32(statfs.f_namelen);
+ *p++ = cpu_to_be32(statfs.f_namelen);
}
if (bmval0 & FATTR4_WORD0_MAXREAD) {
- if ((buflen -= 8) < 0)
+ p = xdr_reserve_space(xdr, 8);
+ if (!p)
goto out_resource;
- WRITE64((u64) svc_max_payload(rqstp));
+ p = xdr_encode_hyper(p, (u64) svc_max_payload(rqstp));
}
if (bmval0 & FATTR4_WORD0_MAXWRITE) {
- if ((buflen -= 8) < 0)
+ p = xdr_reserve_space(xdr, 8);
+ if (!p)
goto out_resource;
- WRITE64((u64) svc_max_payload(rqstp));
+ p = xdr_encode_hyper(p, (u64) svc_max_payload(rqstp));
}
if (bmval1 & FATTR4_WORD1_MODE) {
- if ((buflen -= 4) < 0)
+ p = xdr_reserve_space(xdr, 4);
+ if (!p)
goto out_resource;
- WRITE32(stat.mode & S_IALLUGO);
+ *p++ = cpu_to_be32(stat.mode & S_IALLUGO);
}
if (bmval1 & FATTR4_WORD1_NO_TRUNC) {
- if ((buflen -= 4) < 0)
+ p = xdr_reserve_space(xdr, 4);
+ if (!p)
goto out_resource;
- WRITE32(1);
+ *p++ = cpu_to_be32(1);
}
if (bmval1 & FATTR4_WORD1_NUMLINKS) {
- if ((buflen -= 4) < 0)
+ p = xdr_reserve_space(xdr, 4);
+ if (!p)
goto out_resource;
- WRITE32(stat.nlink);
+ *p++ = cpu_to_be32(stat.nlink);
}
if (bmval1 & FATTR4_WORD1_OWNER) {
- status = nfsd4_encode_user(rqstp, stat.uid, &p, &buflen);
+ status = nfsd4_encode_user(xdr, rqstp, stat.uid);
if (status)
goto out;
}
if (bmval1 & FATTR4_WORD1_OWNER_GROUP) {
- status = nfsd4_encode_group(rqstp, stat.gid, &p, &buflen);
+ status = nfsd4_encode_group(xdr, rqstp, stat.gid);
if (status)
goto out;
}
if (bmval1 & FATTR4_WORD1_RAWDEV) {
- if ((buflen -= 8) < 0)
+ p = xdr_reserve_space(xdr, 8);
+ if (!p)
goto out_resource;
- WRITE32((u32) MAJOR(stat.rdev));
- WRITE32((u32) MINOR(stat.rdev));
+ *p++ = cpu_to_be32((u32) MAJOR(stat.rdev));
+ *p++ = cpu_to_be32((u32) MINOR(stat.rdev));
}
if (bmval1 & FATTR4_WORD1_SPACE_AVAIL) {
- if ((buflen -= 8) < 0)
+ p = xdr_reserve_space(xdr, 8);
+ if (!p)
goto out_resource;
dummy64 = (u64)statfs.f_bavail * (u64)statfs.f_bsize;
- WRITE64(dummy64);
+ p = xdr_encode_hyper(p, dummy64);
}
if (bmval1 & FATTR4_WORD1_SPACE_FREE) {
- if ((buflen -= 8) < 0)
+ p = xdr_reserve_space(xdr, 8);
+ if (!p)
goto out_resource;
dummy64 = (u64)statfs.f_bfree * (u64)statfs.f_bsize;
- WRITE64(dummy64);
+ p = xdr_encode_hyper(p, dummy64);
}
if (bmval1 & FATTR4_WORD1_SPACE_TOTAL) {
- if ((buflen -= 8) < 0)
+ p = xdr_reserve_space(xdr, 8);
+ if (!p)
goto out_resource;
dummy64 = (u64)statfs.f_blocks * (u64)statfs.f_bsize;
- WRITE64(dummy64);
+ p = xdr_encode_hyper(p, dummy64);
}
if (bmval1 & FATTR4_WORD1_SPACE_USED) {
- if ((buflen -= 8) < 0)
+ p = xdr_reserve_space(xdr, 8);
+ if (!p)
goto out_resource;
dummy64 = (u64)stat.blocks << 9;
- WRITE64(dummy64);
+ p = xdr_encode_hyper(p, dummy64);
}
if (bmval1 & FATTR4_WORD1_TIME_ACCESS) {
- if ((buflen -= 12) < 0)
+ p = xdr_reserve_space(xdr, 12);
+ if (!p)
goto out_resource;
- WRITE64((s64)stat.atime.tv_sec);
- WRITE32(stat.atime.tv_nsec);
+ p = xdr_encode_hyper(p, (s64)stat.atime.tv_sec);
+ *p++ = cpu_to_be32(stat.atime.tv_nsec);
}
if (bmval1 & FATTR4_WORD1_TIME_DELTA) {
- if ((buflen -= 12) < 0)
+ p = xdr_reserve_space(xdr, 12);
+ if (!p)
goto out_resource;
- WRITE32(0);
- WRITE32(1);
- WRITE32(0);
+ *p++ = cpu_to_be32(0);
+ *p++ = cpu_to_be32(1);
+ *p++ = cpu_to_be32(0);
}
if (bmval1 & FATTR4_WORD1_TIME_METADATA) {
- if ((buflen -= 12) < 0)
+ p = xdr_reserve_space(xdr, 12);
+ if (!p)
goto out_resource;
- WRITE64((s64)stat.ctime.tv_sec);
- WRITE32(stat.ctime.tv_nsec);
+ p = xdr_encode_hyper(p, (s64)stat.ctime.tv_sec);
+ *p++ = cpu_to_be32(stat.ctime.tv_nsec);
}
if (bmval1 & FATTR4_WORD1_TIME_MODIFY) {
- if ((buflen -= 12) < 0)
+ p = xdr_reserve_space(xdr, 12);
+ if (!p)
goto out_resource;
- WRITE64((s64)stat.mtime.tv_sec);
- WRITE32(stat.mtime.tv_nsec);
+ p = xdr_encode_hyper(p, (s64)stat.mtime.tv_sec);
+ *p++ = cpu_to_be32(stat.mtime.tv_nsec);
}
if (bmval1 & FATTR4_WORD1_MOUNTED_ON_FILEID) {
- if ((buflen -= 8) < 0)
+ p = xdr_reserve_space(xdr, 8);
+ if (!p)
goto out_resource;
/*
* Get parent's attributes if not ignoring crossmount
if (ignore_crossmnt == 0 &&
dentry == exp->ex_path.mnt->mnt_root)
get_parent_attributes(exp, &stat);
- WRITE64(stat.ino);
+ p = xdr_encode_hyper(p, stat.ino);
}
if (bmval2 & FATTR4_WORD2_SECURITY_LABEL) {
- status = nfsd4_encode_security_label(rqstp, context,
- contextlen, &p, &buflen);
+ status = nfsd4_encode_security_label(xdr, rqstp, context,
+ contextlen);
if (status)
goto out;
}
if (bmval2 & FATTR4_WORD2_SUPPATTR_EXCLCREAT) {
- if ((buflen -= 16) < 0)
+ p = xdr_reserve_space(xdr, 16);
+ if (!p)
goto out_resource;
- WRITE32(3);
- WRITE32(NFSD_SUPPATTR_EXCLCREAT_WORD0);
- WRITE32(NFSD_SUPPATTR_EXCLCREAT_WORD1);
- WRITE32(NFSD_SUPPATTR_EXCLCREAT_WORD2);
+ *p++ = cpu_to_be32(3);
+ *p++ = cpu_to_be32(NFSD_SUPPATTR_EXCLCREAT_WORD0);
+ *p++ = cpu_to_be32(NFSD_SUPPATTR_EXCLCREAT_WORD1);
+ *p++ = cpu_to_be32(NFSD_SUPPATTR_EXCLCREAT_WORD2);
}
- *attrlenp = htonl((char *)p - (char *)attrlenp - 4);
- *buffer = p;
+ attrlen = htonl(xdr->buf->len - attrlen_offset - 4);
+ write_bytes_to_xdr_buf(xdr->buf, attrlen_offset, &attrlen, 4);
status = nfs_ok;
out:
fh_put(tempfh);
kfree(tempfh);
}
+ if (status)
+ xdr_truncate_encode(xdr, starting_len);
return status;
out_nfserr:
status = nfserrno(err);
goto out;
}
+static void svcxdr_init_encode_from_buffer(struct xdr_stream *xdr,
+ struct xdr_buf *buf, __be32 *p, int bytes)
+{
+ xdr->scratch.iov_len = 0;
+ memset(buf, 0, sizeof(struct xdr_buf));
+ buf->head[0].iov_base = p;
+ buf->head[0].iov_len = 0;
+ buf->len = 0;
+ xdr->buf = buf;
+ xdr->iov = buf->head;
+ xdr->p = p;
+ xdr->end = (void *)p + bytes;
+ buf->buflen = bytes;
+}
+
+__be32 nfsd4_encode_fattr_to_buf(__be32 **p, int words,
+ struct svc_fh *fhp, struct svc_export *exp,
+ struct dentry *dentry, u32 *bmval,
+ struct svc_rqst *rqstp, int ignore_crossmnt)
+{
+ struct xdr_buf dummy;
+ struct xdr_stream xdr;
+ __be32 ret;
+
+ svcxdr_init_encode_from_buffer(&xdr, &dummy, *p, words << 2);
+ ret = nfsd4_encode_fattr(&xdr, fhp, exp, dentry, bmval, rqstp,
+ ignore_crossmnt);
+ *p = xdr.p;
+ return ret;
+}
+
static inline int attributes_need_mount(u32 *bmval)
{
if (bmval[0] & ~(FATTR4_WORD0_RDATTR_ERROR | FATTR4_WORD0_LEASE_TIME))
}
static __be32
-nfsd4_encode_dirent_fattr(struct nfsd4_readdir *cd,
- const char *name, int namlen, __be32 **p, int buflen)
+nfsd4_encode_dirent_fattr(struct xdr_stream *xdr, struct nfsd4_readdir *cd,
+ const char *name, int namlen)
{
struct svc_export *exp = cd->rd_fhp->fh_export;
struct dentry *dentry;
}
out_encode:
- nfserr = nfsd4_encode_fattr(NULL, exp, dentry, p, buflen, cd->rd_bmval,
+ nfserr = nfsd4_encode_fattr(xdr, NULL, exp, dentry, cd->rd_bmval,
cd->rd_rqstp, ignore_crossmnt);
out_put:
dput(dentry);
}
static __be32 *
-nfsd4_encode_rdattr_error(__be32 *p, int buflen, __be32 nfserr)
+nfsd4_encode_rdattr_error(struct xdr_stream *xdr, __be32 nfserr)
{
- if (buflen < 6)
+ __be32 *p;
+
+ p = xdr_reserve_space(xdr, 6);
+ if (!p)
return NULL;
*p++ = htonl(2);
*p++ = htonl(FATTR4_WORD0_RDATTR_ERROR); /* bmval0 */
{
struct readdir_cd *ccd = ccdv;
struct nfsd4_readdir *cd = container_of(ccd, struct nfsd4_readdir, common);
- int buflen;
- __be32 *p = cd->buffer;
- __be32 *cookiep;
+ struct xdr_stream *xdr = cd->xdr;
+ int start_offset = xdr->buf->len;
+ int cookie_offset;
+ int entry_bytes;
__be32 nfserr = nfserr_toosmall;
+ __be64 wire_offset;
+ __be32 *p;
/* In nfsv4, "." and ".." never make it onto the wire.. */
if (name && isdotent(name, namlen)) {
return 0;
}
- if (cd->offset)
- xdr_encode_hyper(cd->offset, (u64) offset);
+ if (cd->cookie_offset) {
+ wire_offset = cpu_to_be64(offset);
+ write_bytes_to_xdr_buf(xdr->buf, cd->cookie_offset,
+ &wire_offset, 8);
+ }
- buflen = cd->buflen - 4 - XDR_QUADLEN(namlen);
- if (buflen < 0)
+ p = xdr_reserve_space(xdr, 4);
+ if (!p)
goto fail;
-
*p++ = xdr_one; /* mark entry present */
- cookiep = p;
+ cookie_offset = xdr->buf->len;
+ p = xdr_reserve_space(xdr, 3*4 + namlen);
+ if (!p)
+ goto fail;
p = xdr_encode_hyper(p, NFS_OFFSET_MAX); /* offset of next entry */
p = xdr_encode_array(p, name, namlen); /* name length & name */
- nfserr = nfsd4_encode_dirent_fattr(cd, name, namlen, &p, buflen);
+ nfserr = nfsd4_encode_dirent_fattr(xdr, cd, name, namlen);
switch (nfserr) {
case nfs_ok:
break;
*/
if (!(cd->rd_bmval[0] & FATTR4_WORD0_RDATTR_ERROR))
goto fail;
- p = nfsd4_encode_rdattr_error(p, buflen, nfserr);
+ p = nfsd4_encode_rdattr_error(xdr, nfserr);
if (p == NULL) {
nfserr = nfserr_toosmall;
goto fail;
}
}
- cd->buflen -= (p - cd->buffer);
- cd->buffer = p;
- cd->offset = cookiep;
+ nfserr = nfserr_toosmall;
+ entry_bytes = xdr->buf->len - start_offset;
+ if (entry_bytes > cd->rd_maxcount)
+ goto fail;
+ cd->rd_maxcount -= entry_bytes;
+ if (!cd->rd_dircount)
+ goto fail;
+ cd->rd_dircount--;
+ cd->cookie_offset = cookie_offset;
skip_entry:
cd->common.err = nfs_ok;
return 0;
fail:
+ xdr_truncate_encode(xdr, start_offset);
cd->common.err = nfserr;
return -EINVAL;
}
-static void
-nfsd4_encode_stateid(struct nfsd4_compoundres *resp, stateid_t *sid)
+static __be32
+nfsd4_encode_stateid(struct xdr_stream *xdr, stateid_t *sid)
{
__be32 *p;
- RESERVE_SPACE(sizeof(stateid_t));
- WRITE32(sid->si_generation);
- WRITEMEM(&sid->si_opaque, sizeof(stateid_opaque_t));
- ADJUST_ARGS();
+ p = xdr_reserve_space(xdr, sizeof(stateid_t));
+ if (!p)
+ return nfserr_resource;
+ *p++ = cpu_to_be32(sid->si_generation);
+ p = xdr_encode_opaque_fixed(p, &sid->si_opaque,
+ sizeof(stateid_opaque_t));
+ return 0;
}
static __be32
nfsd4_encode_access(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_access *access)
{
+ struct xdr_stream *xdr = &resp->xdr;
__be32 *p;
if (!nfserr) {
- RESERVE_SPACE(8);
- WRITE32(access->ac_supported);
- WRITE32(access->ac_resp_access);
- ADJUST_ARGS();
+ p = xdr_reserve_space(xdr, 8);
+ if (!p)
+ return nfserr_resource;
+ *p++ = cpu_to_be32(access->ac_supported);
+ *p++ = cpu_to_be32(access->ac_resp_access);
}
return nfserr;
}
static __be32 nfsd4_encode_bind_conn_to_session(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_bind_conn_to_session *bcts)
{
+ struct xdr_stream *xdr = &resp->xdr;
__be32 *p;
if (!nfserr) {
- RESERVE_SPACE(NFS4_MAX_SESSIONID_LEN + 8);
- WRITEMEM(bcts->sessionid.data, NFS4_MAX_SESSIONID_LEN);
- WRITE32(bcts->dir);
+ p = xdr_reserve_space(xdr, NFS4_MAX_SESSIONID_LEN + 8);
+ if (!p)
+ return nfserr_resource;
+ p = xdr_encode_opaque_fixed(p, bcts->sessionid.data,
+ NFS4_MAX_SESSIONID_LEN);
+ *p++ = cpu_to_be32(bcts->dir);
/* Sorry, we do not yet support RDMA over 4.1: */
- WRITE32(0);
- ADJUST_ARGS();
+ *p++ = cpu_to_be32(0);
}
return nfserr;
}
static __be32
nfsd4_encode_close(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_close *close)
{
+ struct xdr_stream *xdr = &resp->xdr;
+
if (!nfserr)
- nfsd4_encode_stateid(resp, &close->cl_stateid);
+ nfserr = nfsd4_encode_stateid(xdr, &close->cl_stateid);
return nfserr;
}
static __be32
nfsd4_encode_commit(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_commit *commit)
{
+ struct xdr_stream *xdr = &resp->xdr;
__be32 *p;
if (!nfserr) {
- RESERVE_SPACE(NFS4_VERIFIER_SIZE);
- WRITEMEM(commit->co_verf.data, NFS4_VERIFIER_SIZE);
- ADJUST_ARGS();
+ p = xdr_reserve_space(xdr, NFS4_VERIFIER_SIZE);
+ if (!p)
+ return nfserr_resource;
+ p = xdr_encode_opaque_fixed(p, commit->co_verf.data,
+ NFS4_VERIFIER_SIZE);
}
return nfserr;
}
static __be32
nfsd4_encode_create(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_create *create)
{
+ struct xdr_stream *xdr = &resp->xdr;
__be32 *p;
if (!nfserr) {
- RESERVE_SPACE(32);
- write_cinfo(&p, &create->cr_cinfo);
- WRITE32(2);
- WRITE32(create->cr_bmval[0]);
- WRITE32(create->cr_bmval[1]);
- ADJUST_ARGS();
+ p = xdr_reserve_space(xdr, 32);
+ if (!p)
+ return nfserr_resource;
+ p = encode_cinfo(p, &create->cr_cinfo);
+ *p++ = cpu_to_be32(2);
+ *p++ = cpu_to_be32(create->cr_bmval[0]);
+ *p++ = cpu_to_be32(create->cr_bmval[1]);
}
return nfserr;
}
nfsd4_encode_getattr(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_getattr *getattr)
{
struct svc_fh *fhp = getattr->ga_fhp;
- int buflen;
+ struct xdr_stream *xdr = &resp->xdr;
if (nfserr)
return nfserr;
- buflen = resp->end - resp->p - (COMPOUND_ERR_SLACK_SPACE >> 2);
- nfserr = nfsd4_encode_fattr(fhp, fhp->fh_export, fhp->fh_dentry,
- &resp->p, buflen, getattr->ga_bmval,
+ nfserr = nfsd4_encode_fattr(xdr, fhp, fhp->fh_export, fhp->fh_dentry,
+ getattr->ga_bmval,
resp->rqstp, 0);
return nfserr;
}
static __be32
nfsd4_encode_getfh(struct nfsd4_compoundres *resp, __be32 nfserr, struct svc_fh **fhpp)
{
+ struct xdr_stream *xdr = &resp->xdr;
struct svc_fh *fhp = *fhpp;
unsigned int len;
__be32 *p;
if (!nfserr) {
len = fhp->fh_handle.fh_size;
- RESERVE_SPACE(len + 4);
- WRITE32(len);
- WRITEMEM(&fhp->fh_handle.fh_base, len);
- ADJUST_ARGS();
+ p = xdr_reserve_space(xdr, len + 4);
+ if (!p)
+ return nfserr_resource;
+ p = xdr_encode_opaque(p, &fhp->fh_handle.fh_base, len);
}
return nfserr;
}
* Including all fields other than the name, a LOCK4denied structure requires
* 8(clientid) + 4(namelen) + 8(offset) + 8(length) + 4(type) = 32 bytes.
*/
-static void
-nfsd4_encode_lock_denied(struct nfsd4_compoundres *resp, struct nfsd4_lock_denied *ld)
+static __be32
+nfsd4_encode_lock_denied(struct xdr_stream *xdr, struct nfsd4_lock_denied *ld)
{
struct xdr_netobj *conf = &ld->ld_owner;
__be32 *p;
- RESERVE_SPACE(32 + XDR_LEN(conf->len));
- WRITE64(ld->ld_start);
- WRITE64(ld->ld_length);
- WRITE32(ld->ld_type);
+again:
+ p = xdr_reserve_space(xdr, 32 + XDR_LEN(conf->len));
+ if (!p) {
+ /*
+ * Don't fail to return the result just because we can't
+ * return the conflicting open:
+ */
+ if (conf->len) {
+ conf->len = 0;
+ conf->data = NULL;
+ goto again;
+ }
+ return nfserr_resource;
+ }
+ p = xdr_encode_hyper(p, ld->ld_start);
+ p = xdr_encode_hyper(p, ld->ld_length);
+ *p++ = cpu_to_be32(ld->ld_type);
if (conf->len) {
- WRITEMEM(&ld->ld_clientid, 8);
- WRITE32(conf->len);
- WRITEMEM(conf->data, conf->len);
- kfree(conf->data);
+ p = xdr_encode_opaque_fixed(p, &ld->ld_clientid, 8);
+ p = xdr_encode_opaque(p, conf->data, conf->len);
} else { /* non - nfsv4 lock in conflict, no clientid nor owner */
- WRITE64((u64)0); /* clientid */
- WRITE32(0); /* length of owner name */
+ p = xdr_encode_hyper(p, (u64)0); /* clientid */
+ *p++ = cpu_to_be32(0); /* length of owner name */
}
- ADJUST_ARGS();
+ return nfserr_denied;
}
static __be32
nfsd4_encode_lock(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_lock *lock)
{
+ struct xdr_stream *xdr = &resp->xdr;
+
if (!nfserr)
- nfsd4_encode_stateid(resp, &lock->lk_resp_stateid);
+ nfserr = nfsd4_encode_stateid(xdr, &lock->lk_resp_stateid);
else if (nfserr == nfserr_denied)
- nfsd4_encode_lock_denied(resp, &lock->lk_denied);
-
+ nfserr = nfsd4_encode_lock_denied(xdr, &lock->lk_denied);
+ kfree(lock->lk_denied.ld_owner.data);
return nfserr;
}
static __be32
nfsd4_encode_lockt(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_lockt *lockt)
{
+ struct xdr_stream *xdr = &resp->xdr;
+
if (nfserr == nfserr_denied)
- nfsd4_encode_lock_denied(resp, &lockt->lt_denied);
+ nfsd4_encode_lock_denied(xdr, &lockt->lt_denied);
return nfserr;
}
static __be32
nfsd4_encode_locku(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_locku *locku)
{
+ struct xdr_stream *xdr = &resp->xdr;
+
if (!nfserr)
- nfsd4_encode_stateid(resp, &locku->lu_stateid);
+ nfserr = nfsd4_encode_stateid(xdr, &locku->lu_stateid);
return nfserr;
}
static __be32
nfsd4_encode_link(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_link *link)
{
+ struct xdr_stream *xdr = &resp->xdr;
__be32 *p;
if (!nfserr) {
- RESERVE_SPACE(20);
- write_cinfo(&p, &link->li_cinfo);
- ADJUST_ARGS();
+ p = xdr_reserve_space(xdr, 20);
+ if (!p)
+ return nfserr_resource;
+ p = encode_cinfo(p, &link->li_cinfo);
}
return nfserr;
}
static __be32
nfsd4_encode_open(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_open *open)
{
+ struct xdr_stream *xdr = &resp->xdr;
__be32 *p;
if (nfserr)
goto out;
- nfsd4_encode_stateid(resp, &open->op_stateid);
- RESERVE_SPACE(40);
- write_cinfo(&p, &open->op_cinfo);
- WRITE32(open->op_rflags);
- WRITE32(2);
- WRITE32(open->op_bmval[0]);
- WRITE32(open->op_bmval[1]);
- WRITE32(open->op_delegate_type);
- ADJUST_ARGS();
+ nfserr = nfsd4_encode_stateid(xdr, &open->op_stateid);
+ if (nfserr)
+ goto out;
+ p = xdr_reserve_space(xdr, 40);
+ if (!p)
+ return nfserr_resource;
+ p = encode_cinfo(p, &open->op_cinfo);
+ *p++ = cpu_to_be32(open->op_rflags);
+ *p++ = cpu_to_be32(2);
+ *p++ = cpu_to_be32(open->op_bmval[0]);
+ *p++ = cpu_to_be32(open->op_bmval[1]);
+ *p++ = cpu_to_be32(open->op_delegate_type);
switch (open->op_delegate_type) {
case NFS4_OPEN_DELEGATE_NONE:
break;
case NFS4_OPEN_DELEGATE_READ:
- nfsd4_encode_stateid(resp, &open->op_delegate_stateid);
- RESERVE_SPACE(20);
- WRITE32(open->op_recall);
+ nfserr = nfsd4_encode_stateid(xdr, &open->op_delegate_stateid);
+ if (nfserr)
+ return nfserr;
+ p = xdr_reserve_space(xdr, 20);
+ if (!p)
+ return nfserr_resource;
+ *p++ = cpu_to_be32(open->op_recall);
/*
* TODO: ACE's in delegations
*/
- WRITE32(NFS4_ACE_ACCESS_ALLOWED_ACE_TYPE);
- WRITE32(0);
- WRITE32(0);
- WRITE32(0); /* XXX: is NULL principal ok? */
- ADJUST_ARGS();
+ *p++ = cpu_to_be32(NFS4_ACE_ACCESS_ALLOWED_ACE_TYPE);
+ *p++ = cpu_to_be32(0);
+ *p++ = cpu_to_be32(0);
+ *p++ = cpu_to_be32(0); /* XXX: is NULL principal ok? */
break;
case NFS4_OPEN_DELEGATE_WRITE:
- nfsd4_encode_stateid(resp, &open->op_delegate_stateid);
- RESERVE_SPACE(32);
- WRITE32(0);
+ nfserr = nfsd4_encode_stateid(xdr, &open->op_delegate_stateid);
+ if (nfserr)
+ return nfserr;
+ p = xdr_reserve_space(xdr, 32);
+ if (!p)
+ return nfserr_resource;
+ *p++ = cpu_to_be32(0);
/*
* TODO: space_limit's in delegations
*/
- WRITE32(NFS4_LIMIT_SIZE);
- WRITE32(~(u32)0);
- WRITE32(~(u32)0);
+ *p++ = cpu_to_be32(NFS4_LIMIT_SIZE);
+ *p++ = cpu_to_be32(~(u32)0);
+ *p++ = cpu_to_be32(~(u32)0);
/*
* TODO: ACE's in delegations
*/
- WRITE32(NFS4_ACE_ACCESS_ALLOWED_ACE_TYPE);
- WRITE32(0);
- WRITE32(0);
- WRITE32(0); /* XXX: is NULL principal ok? */
- ADJUST_ARGS();
+ *p++ = cpu_to_be32(NFS4_ACE_ACCESS_ALLOWED_ACE_TYPE);
+ *p++ = cpu_to_be32(0);
+ *p++ = cpu_to_be32(0);
+ *p++ = cpu_to_be32(0); /* XXX: is NULL principal ok? */
break;
case NFS4_OPEN_DELEGATE_NONE_EXT: /* 4.1 */
switch (open->op_why_no_deleg) {
case WND4_CONTENTION:
case WND4_RESOURCE:
- RESERVE_SPACE(8);
- WRITE32(open->op_why_no_deleg);
- WRITE32(0); /* deleg signaling not supported yet */
+ p = xdr_reserve_space(xdr, 8);
+ if (!p)
+ return nfserr_resource;
+ *p++ = cpu_to_be32(open->op_why_no_deleg);
+ /* deleg signaling not supported yet: */
+ *p++ = cpu_to_be32(0);
break;
default:
- RESERVE_SPACE(4);
- WRITE32(open->op_why_no_deleg);
+ p = xdr_reserve_space(xdr, 4);
+ if (!p)
+ return nfserr_resource;
+ *p++ = cpu_to_be32(open->op_why_no_deleg);
}
- ADJUST_ARGS();
break;
default:
BUG();
static __be32
nfsd4_encode_open_confirm(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_open_confirm *oc)
{
+ struct xdr_stream *xdr = &resp->xdr;
+
if (!nfserr)
- nfsd4_encode_stateid(resp, &oc->oc_resp_stateid);
+ nfserr = nfsd4_encode_stateid(xdr, &oc->oc_resp_stateid);
return nfserr;
}
static __be32
nfsd4_encode_open_downgrade(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_open_downgrade *od)
{
+ struct xdr_stream *xdr = &resp->xdr;
+
if (!nfserr)
- nfsd4_encode_stateid(resp, &od->od_stateid);
+ nfserr = nfsd4_encode_stateid(xdr, &od->od_stateid);
return nfserr;
}
-static __be32
-nfsd4_encode_read(struct nfsd4_compoundres *resp, __be32 nfserr,
- struct nfsd4_read *read)
+static __be32 nfsd4_encode_splice_read(
+ struct nfsd4_compoundres *resp,
+ struct nfsd4_read *read,
+ struct file *file, unsigned long maxcount)
{
+ struct xdr_stream *xdr = &resp->xdr;
+ struct xdr_buf *buf = xdr->buf;
u32 eof;
- int v;
- struct page *page;
- unsigned long maxcount;
- long len;
- __be32 *p;
+ int space_left;
+ __be32 nfserr;
+ __be32 *p = xdr->p - 2;
- if (nfserr)
- return nfserr;
- if (resp->xbuf->page_len)
+ /*
+ * Don't inline pages unless we know there's room for eof,
+ * count, and possible padding:
+ */
+ if (xdr->end - xdr->p < 3)
return nfserr_resource;
- RESERVE_SPACE(8); /* eof flag and byte count */
+ nfserr = nfsd_splice_read(read->rd_rqstp, file,
+ read->rd_offset, &maxcount);
+ if (nfserr) {
+ /*
+ * nfsd_splice_actor may have already messed with the
+ * page length; reset it so as not to confuse
+ * xdr_truncate_encode:
+ */
+ buf->page_len = 0;
+ return nfserr;
+ }
- maxcount = svc_max_payload(resp->rqstp);
- if (maxcount > read->rd_length)
- maxcount = read->rd_length;
+ eof = (read->rd_offset + maxcount >=
+ read->rd_fhp->fh_dentry->d_inode->i_size);
+
+ *(p++) = htonl(eof);
+ *(p++) = htonl(maxcount);
+
+ buf->page_len = maxcount;
+ buf->len += maxcount;
+ xdr->page_ptr += (maxcount + PAGE_SIZE - 1) / PAGE_SIZE;
+
+ /* Use rest of head for padding and remaining ops: */
+ buf->tail[0].iov_base = xdr->p;
+ buf->tail[0].iov_len = 0;
+ xdr->iov = buf->tail;
+ if (maxcount&3) {
+ int pad = 4 - (maxcount&3);
+
+ *(xdr->p++) = 0;
+
+ buf->tail[0].iov_base += maxcount&3;
+ buf->tail[0].iov_len = pad;
+ buf->len += pad;
+ }
+
+ space_left = min_t(int, (void *)xdr->end - (void *)xdr->p,
+ buf->buflen - buf->len);
+ buf->buflen = buf->len + space_left;
+ xdr->end = (__be32 *)((void *)xdr->end + space_left);
+
+ return 0;
+}
+
+static __be32 nfsd4_encode_readv(struct nfsd4_compoundres *resp,
+ struct nfsd4_read *read,
+ struct file *file, unsigned long maxcount)
+{
+ struct xdr_stream *xdr = &resp->xdr;
+ u32 eof;
+ int v;
+ int starting_len = xdr->buf->len - 8;
+ long len;
+ int thislen;
+ __be32 nfserr;
+ __be32 tmp;
+ __be32 *p;
+ u32 zzz = 0;
+ int pad;
len = maxcount;
v = 0;
- while (len > 0) {
- page = *(resp->rqstp->rq_next_page);
- if (!page) { /* ran out of pages */
- maxcount -= len;
- break;
- }
- resp->rqstp->rq_vec[v].iov_base = page_address(page);
- resp->rqstp->rq_vec[v].iov_len =
- len < PAGE_SIZE ? len : PAGE_SIZE;
- resp->rqstp->rq_next_page++;
+
+ thislen = (void *)xdr->end - (void *)xdr->p;
+ if (len < thislen)
+ thislen = len;
+ p = xdr_reserve_space(xdr, (thislen+3)&~3);
+ WARN_ON_ONCE(!p);
+ resp->rqstp->rq_vec[v].iov_base = p;
+ resp->rqstp->rq_vec[v].iov_len = thislen;
+ v++;
+ len -= thislen;
+
+ while (len) {
+ thislen = min_t(long, len, PAGE_SIZE);
+ p = xdr_reserve_space(xdr, (thislen+3)&~3);
+ WARN_ON_ONCE(!p);
+ resp->rqstp->rq_vec[v].iov_base = p;
+ resp->rqstp->rq_vec[v].iov_len = thislen;
v++;
- len -= PAGE_SIZE;
+ len -= thislen;
}
read->rd_vlen = v;
- nfserr = nfsd_read_file(read->rd_rqstp, read->rd_fhp, read->rd_filp,
- read->rd_offset, resp->rqstp->rq_vec, read->rd_vlen,
- &maxcount);
-
+ nfserr = nfsd_readv(file, read->rd_offset, resp->rqstp->rq_vec,
+ read->rd_vlen, &maxcount);
if (nfserr)
return nfserr;
+ xdr_truncate_encode(xdr, starting_len + 8 + ((maxcount+3)&~3));
+
eof = (read->rd_offset + maxcount >=
read->rd_fhp->fh_dentry->d_inode->i_size);
- WRITE32(eof);
- WRITE32(maxcount);
- ADJUST_ARGS();
- resp->xbuf->head[0].iov_len = (char*)p
- - (char*)resp->xbuf->head[0].iov_base;
- resp->xbuf->page_len = maxcount;
+ tmp = htonl(eof);
+ write_bytes_to_xdr_buf(xdr->buf, starting_len , &tmp, 4);
+ tmp = htonl(maxcount);
+ write_bytes_to_xdr_buf(xdr->buf, starting_len + 4, &tmp, 4);
- /* Use rest of head for padding and remaining ops: */
- resp->xbuf->tail[0].iov_base = p;
- resp->xbuf->tail[0].iov_len = 0;
- if (maxcount&3) {
- RESERVE_SPACE(4);
- WRITE32(0);
- resp->xbuf->tail[0].iov_base += maxcount&3;
- resp->xbuf->tail[0].iov_len = 4 - (maxcount&3);
- ADJUST_ARGS();
- }
+ pad = (maxcount&3) ? 4 - (maxcount&3) : 0;
+ write_bytes_to_xdr_buf(xdr->buf, starting_len + 8 + maxcount,
+ &zzz, pad);
return 0;
+
}
static __be32
-nfsd4_encode_readlink(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_readlink *readlink)
+nfsd4_encode_read(struct nfsd4_compoundres *resp, __be32 nfserr,
+ struct nfsd4_read *read)
{
- int maxcount;
- char *page;
+ unsigned long maxcount;
+ struct xdr_stream *xdr = &resp->xdr;
+ struct file *file = read->rd_filp;
+ int starting_len = xdr->buf->len;
+ struct raparms *ra;
__be32 *p;
+ __be32 err;
if (nfserr)
return nfserr;
- if (resp->xbuf->page_len)
+
+ p = xdr_reserve_space(xdr, 8); /* eof flag and byte count */
+ if (!p) {
+ WARN_ON_ONCE(resp->rqstp->rq_splice_ok);
return nfserr_resource;
- if (!*resp->rqstp->rq_next_page)
+ }
+ if (resp->xdr.buf->page_len && resp->rqstp->rq_splice_ok) {
+ WARN_ON_ONCE(1);
return nfserr_resource;
+ }
+ xdr_commit_encode(xdr);
+
+ maxcount = svc_max_payload(resp->rqstp);
+ if (maxcount > xdr->buf->buflen - xdr->buf->len)
+ maxcount = xdr->buf->buflen - xdr->buf->len;
+ if (maxcount > read->rd_length)
+ maxcount = read->rd_length;
+
+ if (!read->rd_filp) {
+ err = nfsd_get_tmp_read_open(resp->rqstp, read->rd_fhp,
+ &file, &ra);
+ if (err)
+ goto err_truncate;
+ }
+
+ if (file->f_op->splice_read && resp->rqstp->rq_splice_ok)
+ err = nfsd4_encode_splice_read(resp, read, file, maxcount);
+ else
+ err = nfsd4_encode_readv(resp, read, file, maxcount);
+
+ if (!read->rd_filp)
+ nfsd_put_tmp_read_open(file, ra);
+
+err_truncate:
+ if (err)
+ xdr_truncate_encode(xdr, starting_len);
+ return err;
+}
+
+static __be32
+nfsd4_encode_readlink(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_readlink *readlink)
+{
+ int maxcount;
+ __be32 wire_count;
+ int zero = 0;
+ struct xdr_stream *xdr = &resp->xdr;
+ int length_offset = xdr->buf->len;
+ __be32 *p;
- page = page_address(*(resp->rqstp->rq_next_page++));
+ if (nfserr)
+ return nfserr;
+ p = xdr_reserve_space(xdr, 4);
+ if (!p)
+ return nfserr_resource;
maxcount = PAGE_SIZE;
- RESERVE_SPACE(4);
+ p = xdr_reserve_space(xdr, maxcount);
+ if (!p)
+ return nfserr_resource;
/*
* XXX: By default, the ->readlink() VFS op will truncate symlinks
* if they would overflow the buffer. Is this kosher in NFSv4? If
* not, one easy fix is: if ->readlink() precisely fills the buffer,
* assume that truncation occurred, and return NFS4ERR_RESOURCE.
*/
- nfserr = nfsd_readlink(readlink->rl_rqstp, readlink->rl_fhp, page, &maxcount);
+ nfserr = nfsd_readlink(readlink->rl_rqstp, readlink->rl_fhp,
+ (char *)p, &maxcount);
if (nfserr == nfserr_isdir)
- return nfserr_inval;
- if (nfserr)
+ nfserr = nfserr_inval;
+ if (nfserr) {
+ xdr_truncate_encode(xdr, length_offset);
return nfserr;
-
- WRITE32(maxcount);
- ADJUST_ARGS();
- resp->xbuf->head[0].iov_len = (char*)p
- - (char*)resp->xbuf->head[0].iov_base;
- resp->xbuf->page_len = maxcount;
-
- /* Use rest of head for padding and remaining ops: */
- resp->xbuf->tail[0].iov_base = p;
- resp->xbuf->tail[0].iov_len = 0;
- if (maxcount&3) {
- RESERVE_SPACE(4);
- WRITE32(0);
- resp->xbuf->tail[0].iov_base += maxcount&3;
- resp->xbuf->tail[0].iov_len = 4 - (maxcount&3);
- ADJUST_ARGS();
}
+
+ wire_count = htonl(maxcount);
+ write_bytes_to_xdr_buf(xdr->buf, length_offset, &wire_count, 4);
+ xdr_truncate_encode(xdr, length_offset + 4 + maxcount);
+ if (maxcount & 3)
+ write_bytes_to_xdr_buf(xdr->buf, length_offset + 4 + maxcount,
+ &zero, 4 - (maxcount&3));
return 0;
}
nfsd4_encode_readdir(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_readdir *readdir)
{
int maxcount;
+ int bytes_left;
loff_t offset;
- __be32 *page, *savep, *tailbase;
+ __be64 wire_offset;
+ struct xdr_stream *xdr = &resp->xdr;
+ int starting_len = xdr->buf->len;
__be32 *p;
if (nfserr)
return nfserr;
- if (resp->xbuf->page_len)
- return nfserr_resource;
- if (!*resp->rqstp->rq_next_page)
- return nfserr_resource;
- RESERVE_SPACE(NFS4_VERIFIER_SIZE);
- savep = p;
+ p = xdr_reserve_space(xdr, NFS4_VERIFIER_SIZE);
+ if (!p)
+ return nfserr_resource;
/* XXX: Following NFSv3, we ignore the READDIR verifier for now. */
- WRITE32(0);
- WRITE32(0);
- ADJUST_ARGS();
- resp->xbuf->head[0].iov_len = ((char*)resp->p) - (char*)resp->xbuf->head[0].iov_base;
- tailbase = p;
-
- maxcount = PAGE_SIZE;
- if (maxcount > readdir->rd_maxcount)
- maxcount = readdir->rd_maxcount;
+ *p++ = cpu_to_be32(0);
+ *p++ = cpu_to_be32(0);
+ resp->xdr.buf->head[0].iov_len = ((char *)resp->xdr.p)
+ - (char *)resp->xdr.buf->head[0].iov_base;
/*
- * Convert from bytes to words, account for the two words already
- * written, make sure to leave two words at the end for the next
- * pointer and eof field.
+ * Number of bytes left for directory entries allowing for the
+ * final 8 bytes of the readdir and a following failed op:
+ */
+ bytes_left = xdr->buf->buflen - xdr->buf->len
+ - COMPOUND_ERR_SLACK_SPACE - 8;
+ if (bytes_left < 0) {
+ nfserr = nfserr_resource;
+ goto err_no_verf;
+ }
+ maxcount = min_t(u32, readdir->rd_maxcount, INT_MAX);
+ /*
+ * Note the rfc defines rd_maxcount as the size of the
+ * READDIR4resok structure, which includes the verifier above
+ * and the 8 bytes encoded at the end of this function:
*/
- maxcount = (maxcount >> 2) - 4;
- if (maxcount < 0) {
- nfserr = nfserr_toosmall;
+ if (maxcount < 16) {
+ nfserr = nfserr_toosmall;
goto err_no_verf;
}
+ maxcount = min_t(int, maxcount-16, bytes_left);
- page = page_address(*(resp->rqstp->rq_next_page++));
+ readdir->xdr = xdr;
+ readdir->rd_maxcount = maxcount;
readdir->common.err = 0;
- readdir->buflen = maxcount;
- readdir->buffer = page;
- readdir->offset = NULL;
+ readdir->cookie_offset = 0;
offset = readdir->rd_cookie;
nfserr = nfsd_readdir(readdir->rd_rqstp, readdir->rd_fhp,
&readdir->common, nfsd4_encode_dirent);
if (nfserr == nfs_ok &&
readdir->common.err == nfserr_toosmall &&
- readdir->buffer == page)
- nfserr = nfserr_toosmall;
+ xdr->buf->len == starting_len + 8) {
+ /* nothing encoded; which limit did we hit?: */
+ if (maxcount - 16 < bytes_left)
+ /* It was the fault of rd_maxcount: */
+ nfserr = nfserr_toosmall;
+ else
+ /* We ran out of buffer space: */
+ nfserr = nfserr_resource;
+ }
if (nfserr)
goto err_no_verf;
- if (readdir->offset)
- xdr_encode_hyper(readdir->offset, offset);
+ if (readdir->cookie_offset) {
+ wire_offset = cpu_to_be64(offset);
+ write_bytes_to_xdr_buf(xdr->buf, readdir->cookie_offset,
+ &wire_offset, 8);
+ }
- p = readdir->buffer;
+ p = xdr_reserve_space(xdr, 8);
+ if (!p) {
+ WARN_ON_ONCE(1);
+ goto err_no_verf;
+ }
*p++ = 0; /* no more entries */
*p++ = htonl(readdir->common.err == nfserr_eof);
- resp->xbuf->page_len = ((char*)p) -
- (char*)page_address(*(resp->rqstp->rq_next_page-1));
-
- /* Use rest of head for padding and remaining ops: */
- resp->xbuf->tail[0].iov_base = tailbase;
- resp->xbuf->tail[0].iov_len = 0;
- resp->p = resp->xbuf->tail[0].iov_base;
- resp->end = resp->p + (PAGE_SIZE - resp->xbuf->head[0].iov_len)/4;
return 0;
err_no_verf:
- p = savep;
- ADJUST_ARGS();
+ xdr_truncate_encode(xdr, starting_len);
return nfserr;
}
static __be32
nfsd4_encode_remove(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_remove *remove)
{
+ struct xdr_stream *xdr = &resp->xdr;
__be32 *p;
if (!nfserr) {
- RESERVE_SPACE(20);
- write_cinfo(&p, &remove->rm_cinfo);
- ADJUST_ARGS();
+ p = xdr_reserve_space(xdr, 20);
+ if (!p)
+ return nfserr_resource;
+ p = encode_cinfo(p, &remove->rm_cinfo);
}
return nfserr;
}
static __be32
nfsd4_encode_rename(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_rename *rename)
{
+ struct xdr_stream *xdr = &resp->xdr;
__be32 *p;
if (!nfserr) {
- RESERVE_SPACE(40);
- write_cinfo(&p, &rename->rn_sinfo);
- write_cinfo(&p, &rename->rn_tinfo);
- ADJUST_ARGS();
+ p = xdr_reserve_space(xdr, 40);
+ if (!p)
+ return nfserr_resource;
+ p = encode_cinfo(p, &rename->rn_sinfo);
+ p = encode_cinfo(p, &rename->rn_tinfo);
}
return nfserr;
}
static __be32
-nfsd4_do_encode_secinfo(struct nfsd4_compoundres *resp,
+nfsd4_do_encode_secinfo(struct xdr_stream *xdr,
__be32 nfserr, struct svc_export *exp)
{
u32 i, nflavs, supported;
if (nfserr)
goto out;
+ nfserr = nfserr_resource;
if (exp->ex_nflavors) {
flavs = exp->ex_flavors;
nflavs = exp->ex_nflavors;
}
supported = 0;
- RESERVE_SPACE(4);
+ p = xdr_reserve_space(xdr, 4);
+ if (!p)
+ goto out;
flavorsp = p++; /* to be backfilled later */
- ADJUST_ARGS();
for (i = 0; i < nflavs; i++) {
rpc_authflavor_t pf = flavs[i].pseudoflavor;
if (rpcauth_get_gssinfo(pf, &info) == 0) {
supported++;
- RESERVE_SPACE(4 + 4 + XDR_LEN(info.oid.len) + 4 + 4);
- WRITE32(RPC_AUTH_GSS);
- WRITE32(info.oid.len);
- WRITEMEM(info.oid.data, info.oid.len);
- WRITE32(info.qop);
- WRITE32(info.service);
- ADJUST_ARGS();
+ p = xdr_reserve_space(xdr, 4 + 4 +
+ XDR_LEN(info.oid.len) + 4 + 4);
+ if (!p)
+ goto out;
+ *p++ = cpu_to_be32(RPC_AUTH_GSS);
+ p = xdr_encode_opaque(p, info.oid.data, info.oid.len);
+ *p++ = cpu_to_be32(info.qop);
+ *p++ = cpu_to_be32(info.service);
} else if (pf < RPC_AUTH_MAXFLAVOR) {
supported++;
- RESERVE_SPACE(4);
- WRITE32(pf);
- ADJUST_ARGS();
+ p = xdr_reserve_space(xdr, 4);
+ if (!p)
+ goto out;
+ *p++ = cpu_to_be32(pf);
} else {
if (report)
pr_warn("NFS: SECINFO: security flavor %u "
if (nflavs != supported)
report = false;
*flavorsp = htonl(supported);
-
+ nfserr = 0;
out:
if (exp)
exp_put(exp);
nfsd4_encode_secinfo(struct nfsd4_compoundres *resp, __be32 nfserr,
struct nfsd4_secinfo *secinfo)
{
- return nfsd4_do_encode_secinfo(resp, nfserr, secinfo->si_exp);
+ struct xdr_stream *xdr = &resp->xdr;
+
+ return nfsd4_do_encode_secinfo(xdr, nfserr, secinfo->si_exp);
}
static __be32
nfsd4_encode_secinfo_no_name(struct nfsd4_compoundres *resp, __be32 nfserr,
struct nfsd4_secinfo_no_name *secinfo)
{
- return nfsd4_do_encode_secinfo(resp, nfserr, secinfo->sin_exp);
+ struct xdr_stream *xdr = &resp->xdr;
+
+ return nfsd4_do_encode_secinfo(xdr, nfserr, secinfo->sin_exp);
}
/*
static __be32
nfsd4_encode_setattr(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_setattr *setattr)
{
+ struct xdr_stream *xdr = &resp->xdr;
__be32 *p;
- RESERVE_SPACE(16);
+ p = xdr_reserve_space(xdr, 16);
+ if (!p)
+ return nfserr_resource;
if (nfserr) {
- WRITE32(3);
- WRITE32(0);
- WRITE32(0);
- WRITE32(0);
+ *p++ = cpu_to_be32(3);
+ *p++ = cpu_to_be32(0);
+ *p++ = cpu_to_be32(0);
+ *p++ = cpu_to_be32(0);
}
else {
- WRITE32(3);
- WRITE32(setattr->sa_bmval[0]);
- WRITE32(setattr->sa_bmval[1]);
- WRITE32(setattr->sa_bmval[2]);
+ *p++ = cpu_to_be32(3);
+ *p++ = cpu_to_be32(setattr->sa_bmval[0]);
+ *p++ = cpu_to_be32(setattr->sa_bmval[1]);
+ *p++ = cpu_to_be32(setattr->sa_bmval[2]);
}
- ADJUST_ARGS();
return nfserr;
}
static __be32
nfsd4_encode_setclientid(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_setclientid *scd)
{
+ struct xdr_stream *xdr = &resp->xdr;
__be32 *p;
if (!nfserr) {
- RESERVE_SPACE(8 + NFS4_VERIFIER_SIZE);
- WRITEMEM(&scd->se_clientid, 8);
- WRITEMEM(&scd->se_confirm, NFS4_VERIFIER_SIZE);
- ADJUST_ARGS();
+ p = xdr_reserve_space(xdr, 8 + NFS4_VERIFIER_SIZE);
+ if (!p)
+ return nfserr_resource;
+ p = xdr_encode_opaque_fixed(p, &scd->se_clientid, 8);
+ p = xdr_encode_opaque_fixed(p, &scd->se_confirm,
+ NFS4_VERIFIER_SIZE);
}
else if (nfserr == nfserr_clid_inuse) {
- RESERVE_SPACE(8);
- WRITE32(0);
- WRITE32(0);
- ADJUST_ARGS();
+ p = xdr_reserve_space(xdr, 8);
+ if (!p)
+ return nfserr_resource;
+ *p++ = cpu_to_be32(0);
+ *p++ = cpu_to_be32(0);
}
return nfserr;
}
static __be32
nfsd4_encode_write(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_write *write)
{
+ struct xdr_stream *xdr = &resp->xdr;
__be32 *p;
if (!nfserr) {
- RESERVE_SPACE(16);
- WRITE32(write->wr_bytes_written);
- WRITE32(write->wr_how_written);
- WRITEMEM(write->wr_verifier.data, NFS4_VERIFIER_SIZE);
- ADJUST_ARGS();
+ p = xdr_reserve_space(xdr, 16);
+ if (!p)
+ return nfserr_resource;
+ *p++ = cpu_to_be32(write->wr_bytes_written);
+ *p++ = cpu_to_be32(write->wr_how_written);
+ p = xdr_encode_opaque_fixed(p, write->wr_verifier.data,
+ NFS4_VERIFIER_SIZE);
}
return nfserr;
}
nfsd4_encode_exchange_id(struct nfsd4_compoundres *resp, __be32 nfserr,
struct nfsd4_exchange_id *exid)
{
+ struct xdr_stream *xdr = &resp->xdr;
__be32 *p;
char *major_id;
char *server_scope;
server_scope = utsname()->nodename;
server_scope_sz = strlen(server_scope);
- RESERVE_SPACE(
+ p = xdr_reserve_space(xdr,
8 /* eir_clientid */ +
4 /* eir_sequenceid */ +
4 /* eir_flags */ +
4 /* spr_how */);
+ if (!p)
+ return nfserr_resource;
- WRITEMEM(&exid->clientid, 8);
- WRITE32(exid->seqid);
- WRITE32(exid->flags);
+ p = xdr_encode_opaque_fixed(p, &exid->clientid, 8);
+ *p++ = cpu_to_be32(exid->seqid);
+ *p++ = cpu_to_be32(exid->flags);
- WRITE32(exid->spa_how);
- ADJUST_ARGS();
+ *p++ = cpu_to_be32(exid->spa_how);
switch (exid->spa_how) {
case SP4_NONE:
break;
case SP4_MACH_CRED:
/* spo_must_enforce, spo_must_allow */
- RESERVE_SPACE(16);
+ p = xdr_reserve_space(xdr, 16);
+ if (!p)
+ return nfserr_resource;
/* spo_must_enforce bitmap: */
- WRITE32(2);
- WRITE32(nfs4_minimal_spo_must_enforce[0]);
- WRITE32(nfs4_minimal_spo_must_enforce[1]);
+ *p++ = cpu_to_be32(2);
+ *p++ = cpu_to_be32(nfs4_minimal_spo_must_enforce[0]);
+ *p++ = cpu_to_be32(nfs4_minimal_spo_must_enforce[1]);
/* empty spo_must_allow bitmap: */
- WRITE32(0);
+ *p++ = cpu_to_be32(0);
- ADJUST_ARGS();
break;
default:
WARN_ON_ONCE(1);
}
- RESERVE_SPACE(
+ p = xdr_reserve_space(xdr,
8 /* so_minor_id */ +
4 /* so_major_id.len */ +
(XDR_QUADLEN(major_id_sz) * 4) +
4 /* eir_server_scope.len */ +
(XDR_QUADLEN(server_scope_sz) * 4) +
4 /* eir_server_impl_id.count (0) */);
+ if (!p)
+ return nfserr_resource;
/* The server_owner struct */
- WRITE64(minor_id); /* Minor id */
+ p = xdr_encode_hyper(p, minor_id); /* Minor id */
/* major id */
- WRITE32(major_id_sz);
- WRITEMEM(major_id, major_id_sz);
+ p = xdr_encode_opaque(p, major_id, major_id_sz);
/* Server scope */
- WRITE32(server_scope_sz);
- WRITEMEM(server_scope, server_scope_sz);
+ p = xdr_encode_opaque(p, server_scope, server_scope_sz);
/* Implementation id */
- WRITE32(0); /* zero length nfs_impl_id4 array */
- ADJUST_ARGS();
+ *p++ = cpu_to_be32(0); /* zero length nfs_impl_id4 array */
return 0;
}
nfsd4_encode_create_session(struct nfsd4_compoundres *resp, __be32 nfserr,
struct nfsd4_create_session *sess)
{
+ struct xdr_stream *xdr = &resp->xdr;
__be32 *p;
if (nfserr)
return nfserr;
- RESERVE_SPACE(24);
- WRITEMEM(sess->sessionid.data, NFS4_MAX_SESSIONID_LEN);
- WRITE32(sess->seqid);
- WRITE32(sess->flags);
- ADJUST_ARGS();
-
- RESERVE_SPACE(28);
- WRITE32(0); /* headerpadsz */
- WRITE32(sess->fore_channel.maxreq_sz);
- WRITE32(sess->fore_channel.maxresp_sz);
- WRITE32(sess->fore_channel.maxresp_cached);
- WRITE32(sess->fore_channel.maxops);
- WRITE32(sess->fore_channel.maxreqs);
- WRITE32(sess->fore_channel.nr_rdma_attrs);
- ADJUST_ARGS();
+ p = xdr_reserve_space(xdr, 24);
+ if (!p)
+ return nfserr_resource;
+ p = xdr_encode_opaque_fixed(p, sess->sessionid.data,
+ NFS4_MAX_SESSIONID_LEN);
+ *p++ = cpu_to_be32(sess->seqid);
+ *p++ = cpu_to_be32(sess->flags);
+
+ p = xdr_reserve_space(xdr, 28);
+ if (!p)
+ return nfserr_resource;
+ *p++ = cpu_to_be32(0); /* headerpadsz */
+ *p++ = cpu_to_be32(sess->fore_channel.maxreq_sz);
+ *p++ = cpu_to_be32(sess->fore_channel.maxresp_sz);
+ *p++ = cpu_to_be32(sess->fore_channel.maxresp_cached);
+ *p++ = cpu_to_be32(sess->fore_channel.maxops);
+ *p++ = cpu_to_be32(sess->fore_channel.maxreqs);
+ *p++ = cpu_to_be32(sess->fore_channel.nr_rdma_attrs);
if (sess->fore_channel.nr_rdma_attrs) {
- RESERVE_SPACE(4);
- WRITE32(sess->fore_channel.rdma_attrs);
- ADJUST_ARGS();
+ p = xdr_reserve_space(xdr, 4);
+ if (!p)
+ return nfserr_resource;
+ *p++ = cpu_to_be32(sess->fore_channel.rdma_attrs);
}
- RESERVE_SPACE(28);
- WRITE32(0); /* headerpadsz */
- WRITE32(sess->back_channel.maxreq_sz);
- WRITE32(sess->back_channel.maxresp_sz);
- WRITE32(sess->back_channel.maxresp_cached);
- WRITE32(sess->back_channel.maxops);
- WRITE32(sess->back_channel.maxreqs);
- WRITE32(sess->back_channel.nr_rdma_attrs);
- ADJUST_ARGS();
+ p = xdr_reserve_space(xdr, 28);
+ if (!p)
+ return nfserr_resource;
+ *p++ = cpu_to_be32(0); /* headerpadsz */
+ *p++ = cpu_to_be32(sess->back_channel.maxreq_sz);
+ *p++ = cpu_to_be32(sess->back_channel.maxresp_sz);
+ *p++ = cpu_to_be32(sess->back_channel.maxresp_cached);
+ *p++ = cpu_to_be32(sess->back_channel.maxops);
+ *p++ = cpu_to_be32(sess->back_channel.maxreqs);
+ *p++ = cpu_to_be32(sess->back_channel.nr_rdma_attrs);
if (sess->back_channel.nr_rdma_attrs) {
- RESERVE_SPACE(4);
- WRITE32(sess->back_channel.rdma_attrs);
- ADJUST_ARGS();
+ p = xdr_reserve_space(xdr, 4);
+ if (!p)
+ return nfserr_resource;
+ *p++ = cpu_to_be32(sess->back_channel.rdma_attrs);
}
return 0;
}
nfsd4_encode_sequence(struct nfsd4_compoundres *resp, __be32 nfserr,
struct nfsd4_sequence *seq)
{
+ struct xdr_stream *xdr = &resp->xdr;
__be32 *p;
if (nfserr)
return nfserr;
- RESERVE_SPACE(NFS4_MAX_SESSIONID_LEN + 20);
- WRITEMEM(seq->sessionid.data, NFS4_MAX_SESSIONID_LEN);
- WRITE32(seq->seqid);
- WRITE32(seq->slotid);
+ p = xdr_reserve_space(xdr, NFS4_MAX_SESSIONID_LEN + 20);
+ if (!p)
+ return nfserr_resource;
+ p = xdr_encode_opaque_fixed(p, seq->sessionid.data,
+ NFS4_MAX_SESSIONID_LEN);
+ *p++ = cpu_to_be32(seq->seqid);
+ *p++ = cpu_to_be32(seq->slotid);
/* Note slotid's are numbered from zero: */
- WRITE32(seq->maxslots - 1); /* sr_highest_slotid */
- WRITE32(seq->maxslots - 1); /* sr_target_highest_slotid */
- WRITE32(seq->status_flags);
+ *p++ = cpu_to_be32(seq->maxslots - 1); /* sr_highest_slotid */
+ *p++ = cpu_to_be32(seq->maxslots - 1); /* sr_target_highest_slotid */
+ *p++ = cpu_to_be32(seq->status_flags);
- ADJUST_ARGS();
- resp->cstate.datap = p; /* DRC cache data pointer */
+ resp->cstate.data_offset = xdr->buf->len; /* DRC cache data pointer */
return 0;
}
nfsd4_encode_test_stateid(struct nfsd4_compoundres *resp, __be32 nfserr,
struct nfsd4_test_stateid *test_stateid)
{
+ struct xdr_stream *xdr = &resp->xdr;
struct nfsd4_test_stateid_id *stateid, *next;
__be32 *p;
if (nfserr)
return nfserr;
- RESERVE_SPACE(4 + (4 * test_stateid->ts_num_ids));
+ p = xdr_reserve_space(xdr, 4 + (4 * test_stateid->ts_num_ids));
+ if (!p)
+ return nfserr_resource;
*p++ = htonl(test_stateid->ts_num_ids);
list_for_each_entry_safe(stateid, next, &test_stateid->ts_stateid_list, ts_id_list) {
*p++ = stateid->ts_id_status;
}
- ADJUST_ARGS();
return nfserr;
}
};
/*
- * Calculate the total amount of memory that the compound response has taken
- * after encoding the current operation with pad.
- *
- * pad: if operation is non-idempotent, pad was calculate by op_rsize_bop()
- * which was specified at nfsd4_operation, else pad is zero.
- *
- * Compare this length to the session se_fmaxresp_sz and se_fmaxresp_cached.
+ * Calculate whether we still have space to encode repsize bytes.
+ * There are two considerations:
+ * - For NFS versions >=4.1, the size of the reply must stay within
+ * session limits
+ * - For all NFS versions, we must stay within limited preallocated
+ * buffer space.
*
- * Our se_fmaxresp_cached will always be a multiple of PAGE_SIZE, and so
- * will be at least a page and will therefore hold the xdr_buf head.
+ * This is called before the operation is processed, so can only provide
+ * an upper estimate. For some nonidempotent operations (such as
+ * getattr), it's not necessarily a problem if that estimate is wrong,
+ * as we can fail it after processing without significant side effects.
*/
-__be32 nfsd4_check_resp_size(struct nfsd4_compoundres *resp, u32 pad)
+__be32 nfsd4_check_resp_size(struct nfsd4_compoundres *resp, u32 respsize)
{
- struct xdr_buf *xb = &resp->rqstp->rq_res;
- struct nfsd4_session *session = NULL;
+ struct xdr_buf *buf = &resp->rqstp->rq_res;
struct nfsd4_slot *slot = resp->cstate.slot;
- u32 length, tlen = 0;
+ if (buf->len + respsize <= buf->buflen)
+ return nfs_ok;
if (!nfsd4_has_session(&resp->cstate))
- return 0;
-
- session = resp->cstate.session;
-
- if (xb->page_len == 0) {
- length = (char *)resp->p - (char *)xb->head[0].iov_base + pad;
- } else {
- if (xb->tail[0].iov_base && xb->tail[0].iov_len > 0)
- tlen = (char *)resp->p - (char *)xb->tail[0].iov_base;
-
- length = xb->head[0].iov_len + xb->page_len + tlen + pad;
- }
- dprintk("%s length %u, xb->page_len %u tlen %u pad %u\n", __func__,
- length, xb->page_len, tlen, pad);
-
- if (length > session->se_fchannel.maxresp_sz)
- return nfserr_rep_too_big;
-
- if ((slot->sl_flags & NFSD4_SLOT_CACHETHIS) &&
- length > session->se_fchannel.maxresp_cached)
+ return nfserr_resource;
+ if (slot->sl_flags & NFSD4_SLOT_CACHETHIS) {
+ WARN_ON_ONCE(1);
return nfserr_rep_too_big_to_cache;
-
- return 0;
+ }
+ return nfserr_rep_too_big;
}
void
nfsd4_encode_operation(struct nfsd4_compoundres *resp, struct nfsd4_op *op)
{
+ struct xdr_stream *xdr = &resp->xdr;
struct nfs4_stateowner *so = resp->cstate.replay_owner;
- __be32 *statp;
+ struct svc_rqst *rqstp = resp->rqstp;
+ int post_err_offset;
+ nfsd4_enc encoder;
__be32 *p;
- RESERVE_SPACE(8);
- WRITE32(op->opnum);
- statp = p++; /* to be backfilled at the end */
- ADJUST_ARGS();
+ p = xdr_reserve_space(xdr, 8);
+ if (!p) {
+ WARN_ON_ONCE(1);
+ return;
+ }
+ *p++ = cpu_to_be32(op->opnum);
+ post_err_offset = xdr->buf->len;
if (op->opnum == OP_ILLEGAL)
goto status;
BUG_ON(op->opnum < 0 || op->opnum >= ARRAY_SIZE(nfsd4_enc_ops) ||
!nfsd4_enc_ops[op->opnum]);
- op->status = nfsd4_enc_ops[op->opnum](resp, op->status, &op->u);
+ encoder = nfsd4_enc_ops[op->opnum];
+ op->status = encoder(resp, op->status, &op->u);
+ xdr_commit_encode(xdr);
+
/* nfsd4_check_resp_size guarantees enough room for error status */
- if (!op->status)
- op->status = nfsd4_check_resp_size(resp, 0);
+ if (!op->status) {
+ int space_needed = 0;
+ if (!nfsd4_last_compound_op(rqstp))
+ space_needed = COMPOUND_ERR_SLACK_SPACE;
+ op->status = nfsd4_check_resp_size(resp, space_needed);
+ }
+ if (op->status == nfserr_resource && nfsd4_has_session(&resp->cstate)) {
+ struct nfsd4_slot *slot = resp->cstate.slot;
+
+ if (slot->sl_flags & NFSD4_SLOT_CACHETHIS)
+ op->status = nfserr_rep_too_big_to_cache;
+ else
+ op->status = nfserr_rep_too_big;
+ }
+ if (op->status == nfserr_resource ||
+ op->status == nfserr_rep_too_big ||
+ op->status == nfserr_rep_too_big_to_cache) {
+ /*
+ * The operation may have already been encoded or
+ * partially encoded. No op returns anything additional
+ * in the case of one of these three errors, so we can
+ * just truncate back to after the status. But it's a
+ * bug if we had to do this on a non-idempotent op:
+ */
+ warn_on_nonidempotent_op(op);
+ xdr_truncate_encode(xdr, post_err_offset);
+ }
if (so) {
+ int len = xdr->buf->len - post_err_offset;
+
so->so_replay.rp_status = op->status;
- so->so_replay.rp_buflen = (char *)resp->p - (char *)(statp+1);
- memcpy(so->so_replay.rp_buf, statp+1, so->so_replay.rp_buflen);
+ so->so_replay.rp_buflen = len;
+ read_bytes_from_xdr_buf(xdr->buf, post_err_offset,
+ so->so_replay.rp_buf, len);
}
status:
- /*
- * Note: We write the status directly, instead of using WRITE32(),
- * since it is already in network byte order.
- */
- *statp = op->status;
+ /* Note that op->status is already in network byte order: */
+ write_bytes_to_xdr_buf(xdr->buf, post_err_offset - 4, &op->status, 4);
}
/*
* called with nfs4_lock_state() held
*/
void
-nfsd4_encode_replay(struct nfsd4_compoundres *resp, struct nfsd4_op *op)
+nfsd4_encode_replay(struct xdr_stream *xdr, struct nfsd4_op *op)
{
__be32 *p;
struct nfs4_replay *rp = op->replay;
BUG_ON(!rp);
- RESERVE_SPACE(8);
- WRITE32(op->opnum);
+ p = xdr_reserve_space(xdr, 8 + rp->rp_buflen);
+ if (!p) {
+ WARN_ON_ONCE(1);
+ return;
+ }
+ *p++ = cpu_to_be32(op->opnum);
*p++ = rp->rp_status; /* already xdr'ed */
- ADJUST_ARGS();
- RESERVE_SPACE(rp->rp_buflen);
- WRITEMEM(rp->rp_buf, rp->rp_buflen);
- ADJUST_ARGS();
+ p = xdr_encode_opaque_fixed(p, rp->rp_buf, rp->rp_buflen);
}
int
* All that remains is to write the tag and operation count...
*/
struct nfsd4_compound_state *cs = &resp->cstate;
- struct kvec *iov;
+ struct xdr_buf *buf = resp->xdr.buf;
+
+ WARN_ON_ONCE(buf->len != buf->head[0].iov_len + buf->page_len +
+ buf->tail[0].iov_len);
+
+ rqstp->rq_next_page = resp->xdr.page_ptr + 1;
+
p = resp->tagp;
*p++ = htonl(resp->taglen);
memcpy(p, resp->tag, resp->taglen);
p += XDR_QUADLEN(resp->taglen);
*p++ = htonl(resp->opcnt);
- if (rqstp->rq_res.page_len)
- iov = &rqstp->rq_res.tail[0];
- else
- iov = &rqstp->rq_res.head[0];
- iov->iov_len = ((char*)resp->p) - (char*)iov->iov_base;
- BUG_ON(iov->iov_len > PAGE_SIZE);
if (nfsd4_has_session(cs)) {
struct nfsd_net *nn = net_generic(SVC_NET(rqstp), nfsd_net_id);
struct nfs4_client *clp = cs->session->se_client;
projects / firefly-linux-kernel-4.4.55.git / blobdiff