/*
- * fs/nfs/nfs4xdr.c
- *
* Server-side XDR for NFSv4
*
* Copyright (c) 2002 The Regents of the University of Michigan.
#include <linux/param.h>
#include <linux/smp.h>
-#include <linux/smp_lock.h>
#include <linux/fs.h>
#include <linux/namei.h>
#include <linux/vfs.h>
+#include <linux/utsname.h>
#include <linux/sunrpc/xdr.h>
#include <linux/sunrpc/svc.h>
#include <linux/sunrpc/clnt.h>
#include <linux/nfsd_idmap.h>
#include <linux/nfs4.h>
#include <linux/nfs4_acl.h>
+#include <linux/sunrpc/gss_api.h>
+#include <linux/sunrpc/svcauth_gss.h>
#define NFSDDBG_FACILITY NFSDDBG_XDR
-static int
-check_filename(char *str, int len, int err)
+/*
+ * As per referral draft, the fsid for a referral MUST be different from the fsid of the containing
+ * directory in order to indicate to the client that a filesystem boundary is present
+ * We use a fixed fsid for a referral
+ */
+#define NFS4_REFERRAL_FSID_MAJOR 0x8000000ULL
+#define NFS4_REFERRAL_FSID_MINOR 0x8000000ULL
+
+static __be32
+check_filename(char *str, int len, __be32 err)
{
int i;
* consistent with the style used in NFSv2/v3...
*/
#define DECODE_HEAD \
- u32 *p; \
- int status
+ __be32 *p; \
+ __be32 status
#define DECODE_TAIL \
status = 0; \
out: \
return status; \
xdr_error: \
- printk(KERN_NOTICE "xdr error! (%s:%d)\n", __FILE__, __LINE__); \
+ dprintk("NFSD: xdr error (%s:%d)\n", \
+ __FILE__, __LINE__); \
status = nfserr_bad_xdr; \
goto out
if (!(x = (p==argp->tmp || p == argp->tmpp) ? \
savemem(argp, p, nbytes) : \
(char *)p)) { \
- printk(KERN_NOTICE "xdr error! (%s:%d)\n", __FILE__, __LINE__); \
+ dprintk("NFSD: xdr error (%s:%d)\n", \
+ __FILE__, __LINE__); \
goto xdr_error; \
} \
p += XDR_QUADLEN(nbytes); \
p = argp->p; \
argp->p += XDR_QUADLEN(nbytes); \
} else if (!(p = read_buf(argp, nbytes))) { \
- printk(KERN_NOTICE "xdr error! (%s:%d)\n", __FILE__, __LINE__); \
+ dprintk("NFSD: xdr error (%s:%d)\n", \
+ __FILE__, __LINE__); \
goto xdr_error; \
} \
} while (0)
-static u32 *read_buf(struct nfsd4_compoundargs *argp, int nbytes)
+static __be32 *read_buf(struct nfsd4_compoundargs *argp, u32 nbytes)
{
/* We want more bytes than seem to be available.
* Maybe we need a new page, maybe we have just run out
*/
- int avail = (char*)argp->end - (char*)argp->p;
- u32 *p;
+ unsigned int avail = (char *)argp->end - (char *)argp->p;
+ __be32 *p;
if (avail + argp->pagelen < nbytes)
return NULL;
if (avail + PAGE_SIZE < nbytes) /* need more than a page !! */
return NULL;
}
+ /*
+ * The following memcpy is safe because read_buf is always
+ * called with nbytes > avail, and the two cases above both
+ * guarantee p points to at least nbytes bytes.
+ */
memcpy(p, argp->p, avail);
/* step to next page */
argp->p = page_address(argp->pagelist[0]);
return p;
}
+static int zero_clientid(clientid_t *clid)
+{
+ return (clid->cl_boot == 0) && (clid->cl_id == 0);
+}
+
static int
defer_free(struct nfsd4_compoundargs *argp,
void (*release)(const void *), void *p)
return 0;
}
-static char *savemem(struct nfsd4_compoundargs *argp, u32 *p, int nbytes)
+static char *savemem(struct nfsd4_compoundargs *argp, __be32 *p, int nbytes)
{
- void *new = NULL;
if (p == argp->tmp) {
- new = kmalloc(nbytes, GFP_KERNEL);
- if (!new) return NULL;
- p = new;
+ p = kmalloc(nbytes, GFP_KERNEL);
+ if (!p)
+ return NULL;
memcpy(p, argp->tmp, nbytes);
} else {
- if (p != argp->tmpp)
- BUG();
+ BUG_ON(p != argp->tmpp);
argp->tmpp = NULL;
}
if (defer_free(argp, kfree, p)) {
- kfree(new);
+ kfree(p);
return NULL;
} else
return (char *)p;
}
-
-static int
+static __be32
nfsd4_decode_bitmap(struct nfsd4_compoundargs *argp, u32 *bmval)
{
u32 bmlen;
bmval[0] = 0;
bmval[1] = 0;
+ bmval[2] = 0;
READ_BUF(4);
READ32(bmlen);
READ32(bmval[0]);
if (bmlen > 1)
READ32(bmval[1]);
+ if (bmlen > 2)
+ READ32(bmval[2]);
DECODE_TAIL;
}
-static int
-nfsd4_decode_fattr(struct nfsd4_compoundargs *argp, u32 *bmval, struct iattr *iattr,
- struct nfs4_acl **acl)
+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
+nfsd4_decode_fattr(struct nfsd4_compoundargs *argp, u32 *bmval, u32 *writable,
+ struct iattr *iattr, struct nfs4_acl **acl)
{
int expected_len, len = 0;
u32 dummy32;
char *buf;
+ int host_err;
DECODE_HEAD;
iattr->ia_valid = 0;
return status;
/*
- * According to spec, unsupported attributes return ERR_NOTSUPP;
+ * According to spec, unsupported attributes return ERR_ATTRNOTSUPP;
* read-only attributes return ERR_INVAL.
*/
- if ((bmval[0] & ~NFSD_SUPPORTED_ATTRS_WORD0) || (bmval[1] & ~NFSD_SUPPORTED_ATTRS_WORD1))
+ if ((bmval[0] & ~nfsd_suppattrs0(argp->minorversion)) ||
+ (bmval[1] & ~nfsd_suppattrs1(argp->minorversion)) ||
+ (bmval[2] & ~nfsd_suppattrs2(argp->minorversion)))
return nfserr_attrnotsupp;
- if ((bmval[0] & ~NFSD_WRITEABLE_ATTRS_WORD0) || (bmval[1] & ~NFSD_WRITEABLE_ATTRS_WORD1))
+ if ((bmval[0] & ~writable[0]) || (bmval[1] & ~writable[1]) ||
+ (bmval[2] & ~writable[2]))
return nfserr_inval;
READ_BUF(4);
iattr->ia_valid |= ATTR_SIZE;
}
if (bmval[0] & FATTR4_WORD0_ACL) {
- int nace, i;
- struct nfs4_ace ace;
+ int nace;
+ struct nfs4_ace *ace;
READ_BUF(4); len += 4;
READ32(nace);
- *acl = nfs4_acl_new();
+ if (nace > NFS4_ACL_MAX)
+ return nfserr_resource;
+
+ *acl = nfs4_acl_new(nace);
if (*acl == NULL) {
- status = -ENOMEM;
+ host_err = -ENOMEM;
goto out_nfserr;
}
- defer_free(argp, (void (*)(const void *))nfs4_acl_free, *acl);
+ defer_free(argp, kfree, *acl);
- for (i = 0; i < nace; i++) {
+ (*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(ace->type);
+ READ32(ace->flag);
+ READ32(ace->access_mask);
READ32(dummy32);
READ_BUF(dummy32);
len += XDR_QUADLEN(dummy32) << 2;
READMEM(buf, dummy32);
- ace.whotype = nfs4_acl_get_whotype(buf, dummy32);
- status = 0;
- if (ace.whotype != NFS4_ACL_WHO_NAMED)
- ace.who = 0;
- else if (ace.flag & NFS4_ACE_IDENTIFIER_GROUP)
- status = nfsd_map_name_to_gid(argp->rqstp,
- buf, dummy32, &ace.who);
+ ace->whotype = nfs4_acl_get_whotype(buf, dummy32);
+ host_err = 0;
+ if (ace->whotype != NFS4_ACL_WHO_NAMED)
+ ace->who = 0;
+ else if (ace->flag & NFS4_ACE_IDENTIFIER_GROUP)
+ host_err = nfsd_map_name_to_gid(argp->rqstp,
+ buf, dummy32, &ace->who);
else
- status = nfsd_map_name_to_uid(argp->rqstp,
- buf, dummy32, &ace.who);
- if (status)
- goto out_nfserr;
- status = nfs4_acl_add_ace(*acl, ace.type, ace.flag,
- ace.access_mask, ace.whotype, ace.who);
- if (status)
+ host_err = nfsd_map_name_to_uid(argp->rqstp,
+ buf, dummy32, &ace->who);
+ if (host_err)
goto out_nfserr;
}
} else
READ_BUF(dummy32);
len += (XDR_QUADLEN(dummy32) << 2);
READMEM(buf, dummy32);
- if ((status = nfsd_map_name_to_uid(argp->rqstp, buf, dummy32, &iattr->ia_uid)))
+ if ((host_err = nfsd_map_name_to_uid(argp->rqstp, buf, dummy32, &iattr->ia_uid)))
goto out_nfserr;
iattr->ia_valid |= ATTR_UID;
}
READ_BUF(dummy32);
len += (XDR_QUADLEN(dummy32) << 2);
READMEM(buf, dummy32);
- if ((status = nfsd_map_name_to_gid(argp->rqstp, buf, dummy32, &iattr->ia_gid)))
+ if ((host_err = nfsd_map_name_to_gid(argp->rqstp, buf, dummy32, &iattr->ia_gid)))
goto out_nfserr;
iattr->ia_valid |= ATTR_GID;
}
goto xdr_error;
}
}
- if (bmval[1] & FATTR4_WORD1_TIME_METADATA) {
- /* We require the high 32 bits of 'seconds' to be 0, and we ignore
- all 32 bits of 'nseconds'. */
- READ_BUF(12);
- len += 12;
- READ32(dummy32);
- if (dummy32)
- return nfserr_inval;
- READ32(iattr->ia_ctime.tv_sec);
- READ32(iattr->ia_ctime.tv_nsec);
- if (iattr->ia_ctime.tv_nsec >= (u32)1000000000)
- return nfserr_inval;
- iattr->ia_valid |= ATTR_CTIME;
- }
if (bmval[1] & FATTR4_WORD1_TIME_MODIFY_SET) {
READ_BUF(4);
len += 4;
goto xdr_error;
}
}
+ BUG_ON(bmval[2]); /* no such writeable attr supported yet */
if (len != expected_len)
goto xdr_error;
DECODE_TAIL;
out_nfserr:
- status = nfserrno(status);
+ status = nfserrno(host_err);
goto out;
}
-static int
+static __be32
+nfsd4_decode_stateid(struct nfsd4_compoundargs *argp, stateid_t *sid)
+{
+ DECODE_HEAD;
+
+ READ_BUF(sizeof(stateid_t));
+ READ32(sid->si_generation);
+ COPYMEM(&sid->si_opaque, sizeof(stateid_opaque_t));
+
+ DECODE_TAIL;
+}
+
+static __be32
nfsd4_decode_access(struct nfsd4_compoundargs *argp, struct nfsd4_access *access)
{
DECODE_HEAD;
DECODE_TAIL;
}
-static int
+static __be32
nfsd4_decode_close(struct nfsd4_compoundargs *argp, struct nfsd4_close *close)
{
DECODE_HEAD;
close->cl_stateowner = NULL;
- READ_BUF(4 + sizeof(stateid_t));
+ READ_BUF(4);
READ32(close->cl_seqid);
- READ32(close->cl_stateid.si_generation);
- COPYMEM(&close->cl_stateid.si_opaque, sizeof(stateid_opaque_t));
+ return nfsd4_decode_stateid(argp, &close->cl_stateid);
DECODE_TAIL;
}
-static int
+static __be32
nfsd4_decode_commit(struct nfsd4_compoundargs *argp, struct nfsd4_commit *commit)
{
DECODE_HEAD;
DECODE_TAIL;
}
-static int
+static __be32
nfsd4_decode_create(struct nfsd4_compoundargs *argp, struct nfsd4_create *create)
{
DECODE_HEAD;
if ((status = check_filename(create->cr_name, create->cr_namelen, nfserr_inval)))
return status;
- if ((status = nfsd4_decode_fattr(argp, create->cr_bmval, &create->cr_iattr, &create->cr_acl)))
+ status = nfsd4_decode_fattr(argp, create->cr_bmval, nfsd_attrmask,
+ &create->cr_iattr, &create->cr_acl);
+ if (status)
goto out;
DECODE_TAIL;
}
-static inline int
+static inline __be32
nfsd4_decode_delegreturn(struct nfsd4_compoundargs *argp, struct nfsd4_delegreturn *dr)
{
- DECODE_HEAD;
-
- READ_BUF(sizeof(stateid_t));
- READ32(dr->dr_stateid.si_generation);
- COPYMEM(&dr->dr_stateid.si_opaque, sizeof(stateid_opaque_t));
-
- DECODE_TAIL;
+ return nfsd4_decode_stateid(argp, &dr->dr_stateid);
}
-static inline int
+static inline __be32
nfsd4_decode_getattr(struct nfsd4_compoundargs *argp, struct nfsd4_getattr *getattr)
{
return nfsd4_decode_bitmap(argp, getattr->ga_bmval);
}
-static int
+static __be32
nfsd4_decode_link(struct nfsd4_compoundargs *argp, struct nfsd4_link *link)
{
DECODE_HEAD;
DECODE_TAIL;
}
-static int
+static __be32
nfsd4_decode_lock(struct nfsd4_compoundargs *argp, struct nfsd4_lock *lock)
{
DECODE_HEAD;
READ32(lock->lk_is_new);
if (lock->lk_is_new) {
- READ_BUF(36);
+ READ_BUF(4);
READ32(lock->lk_new_open_seqid);
- READ32(lock->lk_new_open_stateid.si_generation);
-
- COPYMEM(&lock->lk_new_open_stateid.si_opaque, sizeof(stateid_opaque_t));
+ 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);
COPYMEM(&lock->lk_new_clientid, sizeof(clientid_t));
READ32(lock->lk_new_owner.len);
READ_BUF(lock->lk_new_owner.len);
READMEM(lock->lk_new_owner.data, lock->lk_new_owner.len);
} else {
- READ_BUF(20);
- READ32(lock->lk_old_lock_stateid.si_generation);
- COPYMEM(&lock->lk_old_lock_stateid.si_opaque, sizeof(stateid_opaque_t));
+ status = nfsd4_decode_stateid(argp, &lock->lk_old_lock_stateid);
+ if (status)
+ return status;
+ READ_BUF(4);
READ32(lock->lk_old_lock_seqid);
}
DECODE_TAIL;
}
-static int
+static __be32
nfsd4_decode_lockt(struct nfsd4_compoundargs *argp, struct nfsd4_lockt *lockt)
{
DECODE_HEAD;
READ_BUF(lockt->lt_owner.len);
READMEM(lockt->lt_owner.data, lockt->lt_owner.len);
+ if (argp->minorversion && !zero_clientid(&lockt->lt_clientid))
+ return nfserr_inval;
DECODE_TAIL;
}
-static int
+static __be32
nfsd4_decode_locku(struct nfsd4_compoundargs *argp, struct nfsd4_locku *locku)
{
DECODE_HEAD;
locku->lu_stateowner = NULL;
- READ_BUF(24 + sizeof(stateid_t));
+ READ_BUF(8);
READ32(locku->lu_type);
if ((locku->lu_type < NFS4_READ_LT) || (locku->lu_type > NFS4_WRITEW_LT))
goto xdr_error;
READ32(locku->lu_seqid);
- READ32(locku->lu_stateid.si_generation);
- COPYMEM(&locku->lu_stateid.si_opaque, sizeof(stateid_opaque_t));
+ status = nfsd4_decode_stateid(argp, &locku->lu_stateid);
+ if (status)
+ return status;
+ READ_BUF(16);
READ64(locku->lu_offset);
READ64(locku->lu_length);
DECODE_TAIL;
}
-static int
+static __be32
nfsd4_decode_lookup(struct nfsd4_compoundargs *argp, struct nfsd4_lookup *lookup)
{
DECODE_HEAD;
DECODE_TAIL;
}
-static int
+static __be32
nfsd4_decode_open(struct nfsd4_compoundargs *argp, struct nfsd4_open *open)
{
DECODE_HEAD;
switch (open->op_createmode) {
case NFS4_CREATE_UNCHECKED:
case NFS4_CREATE_GUARDED:
- if ((status = nfsd4_decode_fattr(argp, open->op_bmval, &open->op_iattr, &open->op_acl)))
+ status = nfsd4_decode_fattr(argp, open->op_bmval,
+ nfsd_attrmask, &open->op_iattr, &open->op_acl);
+ if (status)
goto out;
break;
case NFS4_CREATE_EXCLUSIVE:
READ_BUF(8);
COPYMEM(open->op_verf.data, 8);
break;
+ case NFS4_CREATE_EXCLUSIVE4_1:
+ if (argp->minorversion < 1)
+ goto xdr_error;
+ READ_BUF(8);
+ COPYMEM(open->op_verf.data, 8);
+ status = nfsd4_decode_fattr(argp, open->op_bmval,
+ nfsd41_ex_attrmask, &open->op_iattr,
+ &open->op_acl);
+ if (status)
+ goto out;
+ break;
default:
goto xdr_error;
}
READ32(open->op_delegate_type);
break;
case NFS4_OPEN_CLAIM_DELEGATE_CUR:
- READ_BUF(sizeof(stateid_t) + 4);
- COPYMEM(&open->op_delegate_stateid, sizeof(stateid_t));
+ status = nfsd4_decode_stateid(argp, &open->op_delegate_stateid);
+ if (status)
+ return status;
+ READ_BUF(4);
READ32(open->op_fname.len);
READ_BUF(open->op_fname.len);
SAVEMEM(open->op_fname.data, open->op_fname.len);
DECODE_TAIL;
}
-static int
+static __be32
nfsd4_decode_open_confirm(struct nfsd4_compoundargs *argp, struct nfsd4_open_confirm *open_conf)
{
DECODE_HEAD;
open_conf->oc_stateowner = NULL;
- READ_BUF(4 + sizeof(stateid_t));
- READ32(open_conf->oc_req_stateid.si_generation);
- COPYMEM(&open_conf->oc_req_stateid.si_opaque, sizeof(stateid_opaque_t));
+ status = nfsd4_decode_stateid(argp, &open_conf->oc_req_stateid);
+ if (status)
+ return status;
+ READ_BUF(4);
READ32(open_conf->oc_seqid);
DECODE_TAIL;
}
-static int
+static __be32
nfsd4_decode_open_downgrade(struct nfsd4_compoundargs *argp, struct nfsd4_open_downgrade *open_down)
{
DECODE_HEAD;
open_down->od_stateowner = NULL;
- READ_BUF(12 + sizeof(stateid_t));
- READ32(open_down->od_stateid.si_generation);
- COPYMEM(&open_down->od_stateid.si_opaque, sizeof(stateid_opaque_t));
+ status = nfsd4_decode_stateid(argp, &open_down->od_stateid);
+ if (status)
+ return status;
+ READ_BUF(12);
READ32(open_down->od_seqid);
READ32(open_down->od_share_access);
READ32(open_down->od_share_deny);
DECODE_TAIL;
}
-static int
+static __be32
nfsd4_decode_putfh(struct nfsd4_compoundargs *argp, struct nfsd4_putfh *putfh)
{
DECODE_HEAD;
DECODE_TAIL;
}
-static int
+static __be32
nfsd4_decode_read(struct nfsd4_compoundargs *argp, struct nfsd4_read *read)
{
DECODE_HEAD;
- READ_BUF(sizeof(stateid_t) + 12);
- READ32(read->rd_stateid.si_generation);
- COPYMEM(&read->rd_stateid.si_opaque, sizeof(stateid_opaque_t));
+ status = nfsd4_decode_stateid(argp, &read->rd_stateid);
+ if (status)
+ return status;
+ READ_BUF(12);
READ64(read->rd_offset);
READ32(read->rd_length);
DECODE_TAIL;
}
-static int
+static __be32
nfsd4_decode_readdir(struct nfsd4_compoundargs *argp, struct nfsd4_readdir *readdir)
{
DECODE_HEAD;
DECODE_TAIL;
}
-static int
+static __be32
nfsd4_decode_remove(struct nfsd4_compoundargs *argp, struct nfsd4_remove *remove)
{
DECODE_HEAD;
DECODE_TAIL;
}
-static int
+static __be32
nfsd4_decode_rename(struct nfsd4_compoundargs *argp, struct nfsd4_rename *rename)
{
DECODE_HEAD;
DECODE_TAIL;
}
-static int
+static __be32
nfsd4_decode_renew(struct nfsd4_compoundargs *argp, clientid_t *clientid)
{
DECODE_HEAD;
DECODE_TAIL;
}
-static int
-nfsd4_decode_setattr(struct nfsd4_compoundargs *argp, struct nfsd4_setattr *setattr)
+static __be32
+nfsd4_decode_secinfo(struct nfsd4_compoundargs *argp,
+ struct nfsd4_secinfo *secinfo)
{
DECODE_HEAD;
- READ_BUF(sizeof(stateid_t));
- READ32(setattr->sa_stateid.si_generation);
- COPYMEM(&setattr->sa_stateid.si_opaque, sizeof(stateid_opaque_t));
- if ((status = nfsd4_decode_fattr(argp, setattr->sa_bmval, &setattr->sa_iattr, &setattr->sa_acl)))
- goto out;
-
+ READ_BUF(4);
+ READ32(secinfo->si_namelen);
+ READ_BUF(secinfo->si_namelen);
+ SAVEMEM(secinfo->si_name, secinfo->si_namelen);
+ status = check_filename(secinfo->si_name, secinfo->si_namelen,
+ nfserr_noent);
+ if (status)
+ return status;
DECODE_TAIL;
}
-static int
+static __be32
+nfsd4_decode_setattr(struct nfsd4_compoundargs *argp, struct nfsd4_setattr *setattr)
+{
+ __be32 status;
+
+ status = nfsd4_decode_stateid(argp, &setattr->sa_stateid);
+ if (status)
+ return status;
+ return nfsd4_decode_fattr(argp, setattr->sa_bmval, nfsd_attrmask,
+ &setattr->sa_iattr, &setattr->sa_acl);
+}
+
+static __be32
nfsd4_decode_setclientid(struct nfsd4_compoundargs *argp, struct nfsd4_setclientid *setclientid)
{
DECODE_HEAD;
DECODE_TAIL;
}
-static int
+static __be32
nfsd4_decode_setclientid_confirm(struct nfsd4_compoundargs *argp, struct nfsd4_setclientid_confirm *scd_c)
{
DECODE_HEAD;
}
/* Also used for NVERIFY */
-static int
+static __be32
nfsd4_decode_verify(struct nfsd4_compoundargs *argp, struct nfsd4_verify *verify)
{
#if 0
DECODE_TAIL;
}
-static int
+static __be32
nfsd4_decode_write(struct nfsd4_compoundargs *argp, struct nfsd4_write *write)
{
int avail;
int len;
DECODE_HEAD;
- READ_BUF(sizeof(stateid_opaque_t) + 20);
- READ32(write->wr_stateid.si_generation);
- COPYMEM(&write->wr_stateid.si_opaque, sizeof(stateid_opaque_t));
+ status = nfsd4_decode_stateid(argp, &write->wr_stateid);
+ if (status)
+ return status;
+ READ_BUF(16);
READ64(write->wr_offset);
READ32(write->wr_stable_how);
if (write->wr_stable_how > 2)
*/
avail = (char*)argp->end - (char*)argp->p;
if (avail + argp->pagelen < write->wr_buflen) {
- printk(KERN_NOTICE "xdr error! (%s:%d)\n", __FILE__, __LINE__);
+ dprintk("NFSD: xdr error (%s:%d)\n",
+ __FILE__, __LINE__);
goto xdr_error;
}
- write->wr_vec[0].iov_base = p;
- write->wr_vec[0].iov_len = avail;
+ argp->rqstp->rq_vec[0].iov_base = p;
+ argp->rqstp->rq_vec[0].iov_len = avail;
v = 0;
len = write->wr_buflen;
- while (len > write->wr_vec[v].iov_len) {
- len -= write->wr_vec[v].iov_len;
+ while (len > argp->rqstp->rq_vec[v].iov_len) {
+ len -= argp->rqstp->rq_vec[v].iov_len;
v++;
- write->wr_vec[v].iov_base = page_address(argp->pagelist[0]);
+ argp->rqstp->rq_vec[v].iov_base = page_address(argp->pagelist[0]);
argp->pagelist++;
if (argp->pagelen >= PAGE_SIZE) {
- write->wr_vec[v].iov_len = PAGE_SIZE;
+ argp->rqstp->rq_vec[v].iov_len = PAGE_SIZE;
argp->pagelen -= PAGE_SIZE;
} else {
- write->wr_vec[v].iov_len = argp->pagelen;
+ argp->rqstp->rq_vec[v].iov_len = argp->pagelen;
argp->pagelen -= len;
}
}
- argp->end = (u32*) (write->wr_vec[v].iov_base + write->wr_vec[v].iov_len);
- argp->p = (u32*) (write->wr_vec[v].iov_base + (XDR_QUADLEN(len) << 2));
- write->wr_vec[v].iov_len = len;
+ argp->end = (__be32*) (argp->rqstp->rq_vec[v].iov_base + argp->rqstp->rq_vec[v].iov_len);
+ argp->p = (__be32*) (argp->rqstp->rq_vec[v].iov_base + (XDR_QUADLEN(len) << 2));
+ argp->rqstp->rq_vec[v].iov_len = len;
write->wr_vlen = v+1;
DECODE_TAIL;
}
-static int
+static __be32
nfsd4_decode_release_lockowner(struct nfsd4_compoundargs *argp, struct nfsd4_release_lockowner *rlockowner)
{
DECODE_HEAD;
READ_BUF(rlockowner->rl_owner.len);
READMEM(rlockowner->rl_owner.data, rlockowner->rl_owner.len);
+ if (argp->minorversion && !zero_clientid(&rlockowner->rl_clientid))
+ return nfserr_inval;
DECODE_TAIL;
}
-static int
+static __be32
+nfsd4_decode_exchange_id(struct nfsd4_compoundargs *argp,
+ struct nfsd4_exchange_id *exid)
+{
+ int dummy;
+ DECODE_HEAD;
+
+ READ_BUF(NFS4_VERIFIER_SIZE);
+ COPYMEM(exid->verifier.data, NFS4_VERIFIER_SIZE);
+
+ READ_BUF(4);
+ READ32(exid->clname.len);
+
+ READ_BUF(exid->clname.len);
+ SAVEMEM(exid->clname.data, exid->clname.len);
+
+ READ_BUF(4);
+ READ32(exid->flags);
+
+ /* Ignore state_protect4_a */
+ READ_BUF(4);
+ READ32(exid->spa_how);
+ switch (exid->spa_how) {
+ case SP4_NONE:
+ break;
+ case SP4_MACH_CRED:
+ /* spo_must_enforce */
+ READ_BUF(4);
+ READ32(dummy);
+ READ_BUF(dummy * 4);
+ p += dummy;
+
+ /* spo_must_allow */
+ READ_BUF(4);
+ READ32(dummy);
+ READ_BUF(dummy * 4);
+ p += dummy;
+ break;
+ case SP4_SSV:
+ /* ssp_ops */
+ READ_BUF(4);
+ READ32(dummy);
+ READ_BUF(dummy * 4);
+ p += dummy;
+
+ READ_BUF(4);
+ READ32(dummy);
+ READ_BUF(dummy * 4);
+ p += dummy;
+
+ /* ssp_hash_algs<> */
+ READ_BUF(4);
+ READ32(dummy);
+ READ_BUF(dummy);
+ p += XDR_QUADLEN(dummy);
+
+ /* ssp_encr_algs<> */
+ READ_BUF(4);
+ READ32(dummy);
+ READ_BUF(dummy);
+ p += XDR_QUADLEN(dummy);
+
+ /* ssp_window and ssp_num_gss_handles */
+ READ_BUF(8);
+ READ32(dummy);
+ READ32(dummy);
+ break;
+ default:
+ goto xdr_error;
+ }
+
+ /* Ignore Implementation ID */
+ READ_BUF(4); /* nfs_impl_id4 array length */
+ READ32(dummy);
+
+ if (dummy > 1)
+ goto xdr_error;
+
+ if (dummy == 1) {
+ /* nii_domain */
+ READ_BUF(4);
+ READ32(dummy);
+ READ_BUF(dummy);
+ p += XDR_QUADLEN(dummy);
+
+ /* nii_name */
+ READ_BUF(4);
+ READ32(dummy);
+ READ_BUF(dummy);
+ p += XDR_QUADLEN(dummy);
+
+ /* nii_date */
+ READ_BUF(12);
+ p += 3;
+ }
+ DECODE_TAIL;
+}
+
+static __be32
+nfsd4_decode_create_session(struct nfsd4_compoundargs *argp,
+ struct nfsd4_create_session *sess)
+{
+ DECODE_HEAD;
+
+ u32 dummy;
+ char *machine_name;
+ int i;
+ int nr_secflavs;
+
+ READ_BUF(16);
+ COPYMEM(&sess->clientid, 8);
+ READ32(sess->seqid);
+ READ32(sess->flags);
+
+ /* 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);
+ if (sess->fore_channel.nr_rdma_attrs == 1) {
+ READ_BUF(4);
+ READ32(sess->fore_channel.rdma_attrs);
+ } 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);
+ if (sess->back_channel.nr_rdma_attrs == 1) {
+ READ_BUF(4);
+ READ32(sess->back_channel.rdma_attrs);
+ } else if (sess->back_channel.nr_rdma_attrs > 1) {
+ dprintk("Too many back channel attr bitmaps!\n");
+ goto xdr_error;
+ }
+
+ READ_BUF(8);
+ READ32(sess->callback_prog);
+
+ /* callback_sec_params4 */
+ READ32(nr_secflavs);
+ for (i = 0; i < nr_secflavs; ++i) {
+ READ_BUF(4);
+ READ32(dummy);
+ switch (dummy) {
+ case RPC_AUTH_NULL:
+ /* Nothing to read */
+ break;
+ case RPC_AUTH_UNIX:
+ READ_BUF(8);
+ /* stamp */
+ READ32(dummy);
+
+ /* machine name */
+ READ32(dummy);
+ READ_BUF(dummy);
+ SAVEMEM(machine_name, dummy);
+
+ /* uid, gid */
+ READ_BUF(8);
+ READ32(sess->uid);
+ READ32(sess->gid);
+
+ /* more gids */
+ READ_BUF(4);
+ READ32(dummy);
+ READ_BUF(dummy * 4);
+ for (i = 0; i < dummy; ++i)
+ READ32(dummy);
+ break;
+ case RPC_AUTH_GSS:
+ dprintk("RPC_AUTH_GSS callback secflavor "
+ "not supported!\n");
+ READ_BUF(8);
+ /* gcbp_service */
+ READ32(dummy);
+ /* gcbp_handle_from_server */
+ READ32(dummy);
+ READ_BUF(dummy);
+ p += XDR_QUADLEN(dummy);
+ /* gcbp_handle_from_client */
+ READ_BUF(4);
+ READ32(dummy);
+ READ_BUF(dummy);
+ p += XDR_QUADLEN(dummy);
+ break;
+ default:
+ dprintk("Illegal callback secflavor\n");
+ return nfserr_inval;
+ }
+ }
+ DECODE_TAIL;
+}
+
+static __be32
+nfsd4_decode_destroy_session(struct nfsd4_compoundargs *argp,
+ struct nfsd4_destroy_session *destroy_session)
+{
+ DECODE_HEAD;
+ READ_BUF(NFS4_MAX_SESSIONID_LEN);
+ COPYMEM(destroy_session->sessionid.data, NFS4_MAX_SESSIONID_LEN);
+
+ DECODE_TAIL;
+}
+
+static __be32
+nfsd4_decode_sequence(struct nfsd4_compoundargs *argp,
+ struct nfsd4_sequence *seq)
+{
+ DECODE_HEAD;
+
+ 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);
+
+ DECODE_TAIL;
+}
+
+static __be32
+nfsd4_decode_noop(struct nfsd4_compoundargs *argp, void *p)
+{
+ return nfs_ok;
+}
+
+static __be32
+nfsd4_decode_notsupp(struct nfsd4_compoundargs *argp, void *p)
+{
+ return nfserr_notsupp;
+}
+
+typedef __be32(*nfsd4_dec)(struct nfsd4_compoundargs *argp, void *);
+
+static nfsd4_dec nfsd4_dec_ops[] = {
+ [OP_ACCESS] = (nfsd4_dec)nfsd4_decode_access,
+ [OP_CLOSE] = (nfsd4_dec)nfsd4_decode_close,
+ [OP_COMMIT] = (nfsd4_dec)nfsd4_decode_commit,
+ [OP_CREATE] = (nfsd4_dec)nfsd4_decode_create,
+ [OP_DELEGPURGE] = (nfsd4_dec)nfsd4_decode_notsupp,
+ [OP_DELEGRETURN] = (nfsd4_dec)nfsd4_decode_delegreturn,
+ [OP_GETATTR] = (nfsd4_dec)nfsd4_decode_getattr,
+ [OP_GETFH] = (nfsd4_dec)nfsd4_decode_noop,
+ [OP_LINK] = (nfsd4_dec)nfsd4_decode_link,
+ [OP_LOCK] = (nfsd4_dec)nfsd4_decode_lock,
+ [OP_LOCKT] = (nfsd4_dec)nfsd4_decode_lockt,
+ [OP_LOCKU] = (nfsd4_dec)nfsd4_decode_locku,
+ [OP_LOOKUP] = (nfsd4_dec)nfsd4_decode_lookup,
+ [OP_LOOKUPP] = (nfsd4_dec)nfsd4_decode_noop,
+ [OP_NVERIFY] = (nfsd4_dec)nfsd4_decode_verify,
+ [OP_OPEN] = (nfsd4_dec)nfsd4_decode_open,
+ [OP_OPENATTR] = (nfsd4_dec)nfsd4_decode_notsupp,
+ [OP_OPEN_CONFIRM] = (nfsd4_dec)nfsd4_decode_open_confirm,
+ [OP_OPEN_DOWNGRADE] = (nfsd4_dec)nfsd4_decode_open_downgrade,
+ [OP_PUTFH] = (nfsd4_dec)nfsd4_decode_putfh,
+ [OP_PUTPUBFH] = (nfsd4_dec)nfsd4_decode_noop,
+ [OP_PUTROOTFH] = (nfsd4_dec)nfsd4_decode_noop,
+ [OP_READ] = (nfsd4_dec)nfsd4_decode_read,
+ [OP_READDIR] = (nfsd4_dec)nfsd4_decode_readdir,
+ [OP_READLINK] = (nfsd4_dec)nfsd4_decode_noop,
+ [OP_REMOVE] = (nfsd4_dec)nfsd4_decode_remove,
+ [OP_RENAME] = (nfsd4_dec)nfsd4_decode_rename,
+ [OP_RENEW] = (nfsd4_dec)nfsd4_decode_renew,
+ [OP_RESTOREFH] = (nfsd4_dec)nfsd4_decode_noop,
+ [OP_SAVEFH] = (nfsd4_dec)nfsd4_decode_noop,
+ [OP_SECINFO] = (nfsd4_dec)nfsd4_decode_secinfo,
+ [OP_SETATTR] = (nfsd4_dec)nfsd4_decode_setattr,
+ [OP_SETCLIENTID] = (nfsd4_dec)nfsd4_decode_setclientid,
+ [OP_SETCLIENTID_CONFIRM] = (nfsd4_dec)nfsd4_decode_setclientid_confirm,
+ [OP_VERIFY] = (nfsd4_dec)nfsd4_decode_verify,
+ [OP_WRITE] = (nfsd4_dec)nfsd4_decode_write,
+ [OP_RELEASE_LOCKOWNER] = (nfsd4_dec)nfsd4_decode_release_lockowner,
+};
+
+static nfsd4_dec nfsd41_dec_ops[] = {
+ [OP_ACCESS] (nfsd4_dec)nfsd4_decode_access,
+ [OP_CLOSE] (nfsd4_dec)nfsd4_decode_close,
+ [OP_COMMIT] (nfsd4_dec)nfsd4_decode_commit,
+ [OP_CREATE] (nfsd4_dec)nfsd4_decode_create,
+ [OP_DELEGPURGE] (nfsd4_dec)nfsd4_decode_notsupp,
+ [OP_DELEGRETURN] (nfsd4_dec)nfsd4_decode_delegreturn,
+ [OP_GETATTR] (nfsd4_dec)nfsd4_decode_getattr,
+ [OP_GETFH] (nfsd4_dec)nfsd4_decode_noop,
+ [OP_LINK] (nfsd4_dec)nfsd4_decode_link,
+ [OP_LOCK] (nfsd4_dec)nfsd4_decode_lock,
+ [OP_LOCKT] (nfsd4_dec)nfsd4_decode_lockt,
+ [OP_LOCKU] (nfsd4_dec)nfsd4_decode_locku,
+ [OP_LOOKUP] (nfsd4_dec)nfsd4_decode_lookup,
+ [OP_LOOKUPP] (nfsd4_dec)nfsd4_decode_noop,
+ [OP_NVERIFY] (nfsd4_dec)nfsd4_decode_verify,
+ [OP_OPEN] (nfsd4_dec)nfsd4_decode_open,
+ [OP_OPENATTR] (nfsd4_dec)nfsd4_decode_notsupp,
+ [OP_OPEN_CONFIRM] (nfsd4_dec)nfsd4_decode_notsupp,
+ [OP_OPEN_DOWNGRADE] (nfsd4_dec)nfsd4_decode_open_downgrade,
+ [OP_PUTFH] (nfsd4_dec)nfsd4_decode_putfh,
+ [OP_PUTPUBFH] (nfsd4_dec)nfsd4_decode_notsupp,
+ [OP_PUTROOTFH] (nfsd4_dec)nfsd4_decode_noop,
+ [OP_READ] (nfsd4_dec)nfsd4_decode_read,
+ [OP_READDIR] (nfsd4_dec)nfsd4_decode_readdir,
+ [OP_READLINK] (nfsd4_dec)nfsd4_decode_noop,
+ [OP_REMOVE] (nfsd4_dec)nfsd4_decode_remove,
+ [OP_RENAME] (nfsd4_dec)nfsd4_decode_rename,
+ [OP_RENEW] (nfsd4_dec)nfsd4_decode_notsupp,
+ [OP_RESTOREFH] (nfsd4_dec)nfsd4_decode_noop,
+ [OP_SAVEFH] (nfsd4_dec)nfsd4_decode_noop,
+ [OP_SECINFO] (nfsd4_dec)nfsd4_decode_secinfo,
+ [OP_SETATTR] (nfsd4_dec)nfsd4_decode_setattr,
+ [OP_SETCLIENTID] (nfsd4_dec)nfsd4_decode_notsupp,
+ [OP_SETCLIENTID_CONFIRM](nfsd4_dec)nfsd4_decode_notsupp,
+ [OP_VERIFY] (nfsd4_dec)nfsd4_decode_verify,
+ [OP_WRITE] (nfsd4_dec)nfsd4_decode_write,
+ [OP_RELEASE_LOCKOWNER] (nfsd4_dec)nfsd4_decode_notsupp,
+
+ /* new operations for NFSv4.1 */
+ [OP_BACKCHANNEL_CTL] (nfsd4_dec)nfsd4_decode_notsupp,
+ [OP_BIND_CONN_TO_SESSION](nfsd4_dec)nfsd4_decode_notsupp,
+ [OP_EXCHANGE_ID] (nfsd4_dec)nfsd4_decode_exchange_id,
+ [OP_CREATE_SESSION] (nfsd4_dec)nfsd4_decode_create_session,
+ [OP_DESTROY_SESSION] (nfsd4_dec)nfsd4_decode_destroy_session,
+ [OP_FREE_STATEID] (nfsd4_dec)nfsd4_decode_notsupp,
+ [OP_GET_DIR_DELEGATION] (nfsd4_dec)nfsd4_decode_notsupp,
+ [OP_GETDEVICEINFO] (nfsd4_dec)nfsd4_decode_notsupp,
+ [OP_GETDEVICELIST] (nfsd4_dec)nfsd4_decode_notsupp,
+ [OP_LAYOUTCOMMIT] (nfsd4_dec)nfsd4_decode_notsupp,
+ [OP_LAYOUTGET] (nfsd4_dec)nfsd4_decode_notsupp,
+ [OP_LAYOUTRETURN] (nfsd4_dec)nfsd4_decode_notsupp,
+ [OP_SECINFO_NO_NAME] (nfsd4_dec)nfsd4_decode_notsupp,
+ [OP_SEQUENCE] (nfsd4_dec)nfsd4_decode_sequence,
+ [OP_SET_SSV] (nfsd4_dec)nfsd4_decode_notsupp,
+ [OP_TEST_STATEID] (nfsd4_dec)nfsd4_decode_notsupp,
+ [OP_WANT_DELEGATION] (nfsd4_dec)nfsd4_decode_notsupp,
+ [OP_DESTROY_CLIENTID] (nfsd4_dec)nfsd4_decode_notsupp,
+ [OP_RECLAIM_COMPLETE] (nfsd4_dec)nfsd4_decode_notsupp,
+};
+
+struct nfsd4_minorversion_ops {
+ nfsd4_dec *decoders;
+ int nops;
+};
+
+static struct nfsd4_minorversion_ops nfsd4_minorversion[] = {
+ [0] = { nfsd4_dec_ops, ARRAY_SIZE(nfsd4_dec_ops) },
+ [1] = { nfsd41_dec_ops, ARRAY_SIZE(nfsd41_dec_ops) },
+};
+
+static __be32
nfsd4_decode_compound(struct nfsd4_compoundargs *argp)
{
DECODE_HEAD;
struct nfsd4_op *op;
+ struct nfsd4_minorversion_ops *ops;
int i;
/*
argp->ops = kmalloc(argp->opcnt * sizeof(*argp->ops), GFP_KERNEL);
if (!argp->ops) {
argp->ops = argp->iops;
- printk(KERN_INFO "nfsd: couldn't allocate room for COMPOUND\n");
+ dprintk("nfsd: couldn't allocate room for COMPOUND\n");
goto xdr_error;
}
}
+ if (argp->minorversion >= ARRAY_SIZE(nfsd4_minorversion))
+ argp->opcnt = 0;
+
+ ops = &nfsd4_minorversion[argp->minorversion];
for (i = 0; i < argp->opcnt; i++) {
op = &argp->ops[i];
op->replay = NULL;
}
op->opnum = ntohl(*argp->p++);
- switch (op->opnum) {
- case 2: /* Reserved operation */
- op->opnum = OP_ILLEGAL;
- if (argp->minorversion == 0)
- op->status = nfserr_op_illegal;
- else
- op->status = nfserr_minor_vers_mismatch;
- break;
- case OP_ACCESS:
- op->status = nfsd4_decode_access(argp, &op->u.access);
- break;
- case OP_CLOSE:
- op->status = nfsd4_decode_close(argp, &op->u.close);
- break;
- case OP_COMMIT:
- op->status = nfsd4_decode_commit(argp, &op->u.commit);
- break;
- case OP_CREATE:
- op->status = nfsd4_decode_create(argp, &op->u.create);
- break;
- case OP_DELEGRETURN:
- op->status = nfsd4_decode_delegreturn(argp, &op->u.delegreturn);
- break;
- case OP_GETATTR:
- op->status = nfsd4_decode_getattr(argp, &op->u.getattr);
- break;
- case OP_GETFH:
- op->status = nfs_ok;
- break;
- case OP_LINK:
- op->status = nfsd4_decode_link(argp, &op->u.link);
- break;
- case OP_LOCK:
- op->status = nfsd4_decode_lock(argp, &op->u.lock);
- break;
- case OP_LOCKT:
- op->status = nfsd4_decode_lockt(argp, &op->u.lockt);
- break;
- case OP_LOCKU:
- op->status = nfsd4_decode_locku(argp, &op->u.locku);
- break;
- case OP_LOOKUP:
- op->status = nfsd4_decode_lookup(argp, &op->u.lookup);
- break;
- case OP_LOOKUPP:
- op->status = nfs_ok;
- break;
- case OP_NVERIFY:
- op->status = nfsd4_decode_verify(argp, &op->u.nverify);
- break;
- case OP_OPEN:
- op->status = nfsd4_decode_open(argp, &op->u.open);
- break;
- case OP_OPEN_CONFIRM:
- op->status = nfsd4_decode_open_confirm(argp, &op->u.open_confirm);
- break;
- case OP_OPEN_DOWNGRADE:
- op->status = nfsd4_decode_open_downgrade(argp, &op->u.open_downgrade);
- break;
- case OP_PUTFH:
- op->status = nfsd4_decode_putfh(argp, &op->u.putfh);
- break;
- case OP_PUTROOTFH:
- op->status = nfs_ok;
- break;
- case OP_READ:
- op->status = nfsd4_decode_read(argp, &op->u.read);
- break;
- case OP_READDIR:
- op->status = nfsd4_decode_readdir(argp, &op->u.readdir);
- break;
- case OP_READLINK:
- op->status = nfs_ok;
- break;
- case OP_REMOVE:
- op->status = nfsd4_decode_remove(argp, &op->u.remove);
- break;
- case OP_RENAME:
- op->status = nfsd4_decode_rename(argp, &op->u.rename);
- break;
- case OP_RESTOREFH:
- op->status = nfs_ok;
- break;
- case OP_RENEW:
- op->status = nfsd4_decode_renew(argp, &op->u.renew);
- break;
- case OP_SAVEFH:
- op->status = nfs_ok;
- break;
- case OP_SETATTR:
- op->status = nfsd4_decode_setattr(argp, &op->u.setattr);
- break;
- case OP_SETCLIENTID:
- op->status = nfsd4_decode_setclientid(argp, &op->u.setclientid);
- break;
- case OP_SETCLIENTID_CONFIRM:
- op->status = nfsd4_decode_setclientid_confirm(argp, &op->u.setclientid_confirm);
- break;
- case OP_VERIFY:
- op->status = nfsd4_decode_verify(argp, &op->u.verify);
- break;
- case OP_WRITE:
- op->status = nfsd4_decode_write(argp, &op->u.write);
- break;
- case OP_RELEASE_LOCKOWNER:
- op->status = nfsd4_decode_release_lockowner(argp, &op->u.release_lockowner);
- break;
- default:
+ if (op->opnum >= OP_ACCESS && op->opnum < ops->nops)
+ op->status = ops->decoders[op->opnum](argp, &op->u);
+ else {
op->opnum = OP_ILLEGAL;
op->status = nfserr_op_illegal;
- break;
}
if (op->status) {
* task to translate them into Linux-specific versions which are more
* consistent with the style used in NFSv2/v3...
*/
-#define ENCODE_HEAD u32 *p
-
#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 { \
+#define WRITEMEM(ptr,nbytes) do { if (nbytes > 0) { \
*(p + XDR_QUADLEN(nbytes) -1) = 0; \
memcpy(p, ptr, nbytes); \
p += XDR_QUADLEN(nbytes); \
-} while (0)
+}} while (0)
#define WRITECINFO(c) do { \
*p++ = htonl(c.atomic); \
*p++ = htonl(c.before_ctime_sec); \
* Header routine to setup seqid operation replay cache
*/
#define ENCODE_SEQID_OP_HEAD \
- u32 *p; \
- u32 *save; \
+ __be32 *save; \
\
save = resp->p;
stateowner->so_replay.rp_buflen); \
} } while (0);
+/* Encode as an array of strings the string given with components
+ * seperated @sep.
+ */
+static __be32 nfsd4_encode_components(char sep, char *components,
+ __be32 **pp, int *buflen)
+{
+ __be32 *p = *pp;
+ __be32 *countp = p;
+ int strlen, count=0;
+ char *str, *end;
-static u32 nfs4_ftypes[16] = {
- NF4BAD, NF4FIFO, NF4CHR, NF4BAD,
- NF4DIR, NF4BAD, NF4BLK, NF4BAD,
+ dprintk("nfsd4_encode_components(%s)\n", components);
+ if ((*buflen -= 4) < 0)
+ return nfserr_resource;
+ WRITE32(0); /* We will fill this in with @count later */
+ end = str = components;
+ while (*end) {
+ for (; *end && (*end != sep); end++)
+ ; /* Point to end of component */
+ strlen = end - str;
+ if (strlen) {
+ if ((*buflen -= ((XDR_QUADLEN(strlen) << 2) + 4)) < 0)
+ return nfserr_resource;
+ WRITE32(strlen);
+ WRITEMEM(str, strlen);
+ count++;
+ }
+ else
+ end++;
+ str = end;
+ }
+ *pp = p;
+ p = countp;
+ WRITE32(count);
+ return 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)
+{
+ __be32 status;
+ __be32 *p = *pp;
+
+ status = nfsd4_encode_components(':', location->hosts, &p, buflen);
+ if (status)
+ return status;
+ status = nfsd4_encode_components('/', location->path, &p, buflen);
+ if (status)
+ return status;
+ *pp = p;
+ return 0;
+}
+
+/*
+ * Return the path to an export point in the pseudo filesystem namespace
+ * Returned string is safe to use as long as the caller holds a reference
+ * to @exp.
+ */
+static char *nfsd4_path(struct svc_rqst *rqstp, struct svc_export *exp, __be32 *stat)
+{
+ struct svc_fh tmp_fh;
+ char *path, *rootpath;
+
+ fh_init(&tmp_fh, NFS4_FHSIZE);
+ *stat = exp_pseudoroot(rqstp, &tmp_fh);
+ if (*stat)
+ return NULL;
+ rootpath = tmp_fh.fh_export->ex_pathname;
+
+ path = exp->ex_pathname;
+
+ if (strncmp(path, rootpath, strlen(rootpath))) {
+ dprintk("nfsd: fs_locations failed;"
+ "%s is not contained in %s\n", path, rootpath);
+ *stat = nfserr_notsupp;
+ return NULL;
+ }
+
+ return path + strlen(rootpath);
+}
+
+/*
+ * encode a fs_locations structure
+ */
+static __be32 nfsd4_encode_fs_locations(struct svc_rqst *rqstp,
+ struct svc_export *exp,
+ __be32 **pp, int *buflen)
+{
+ __be32 status;
+ int i;
+ __be32 *p = *pp;
+ struct nfsd4_fs_locations *fslocs = &exp->ex_fslocs;
+ char *root = nfsd4_path(rqstp, exp, &status);
+
+ if (status)
+ return status;
+ status = nfsd4_encode_components('/', root, &p, buflen);
+ if (status)
+ return status;
+ if ((*buflen -= 4) < 0)
+ return nfserr_resource;
+ WRITE32(fslocs->locations_count);
+ for (i=0; i<fslocs->locations_count; i++) {
+ status = nfsd4_encode_fs_location4(&fslocs->locations[i],
+ &p, buflen);
+ if (status)
+ return status;
+ }
+ *pp = p;
+ return 0;
+}
+
+static u32 nfs4_ftypes[16] = {
+ NF4BAD, NF4FIFO, NF4CHR, NF4BAD,
+ NF4DIR, NF4BAD, NF4BLK, NF4BAD,
NF4REG, NF4BAD, NF4LNK, NF4BAD,
NF4SOCK, NF4BAD, NF4LNK, NF4BAD,
};
-static int
+static __be32
nfsd4_encode_name(struct svc_rqst *rqstp, int whotype, uid_t id, int group,
- u32 **p, int *buflen)
+ __be32 **p, int *buflen)
{
int status;
return 0;
}
-static inline int
-nfsd4_encode_user(struct svc_rqst *rqstp, uid_t uid, u32 **p, int *buflen)
+static inline __be32
+nfsd4_encode_user(struct svc_rqst *rqstp, uid_t uid, __be32 **p, int *buflen)
{
return nfsd4_encode_name(rqstp, NFS4_ACL_WHO_NAMED, uid, 0, p, buflen);
}
-static inline int
-nfsd4_encode_group(struct svc_rqst *rqstp, uid_t gid, u32 **p, int *buflen)
+static inline __be32
+nfsd4_encode_group(struct svc_rqst *rqstp, uid_t gid, __be32 **p, int *buflen)
{
return nfsd4_encode_name(rqstp, NFS4_ACL_WHO_NAMED, gid, 1, p, buflen);
}
-static inline int
+static inline __be32
nfsd4_encode_aclname(struct svc_rqst *rqstp, int whotype, uid_t id, int group,
- u32 **p, int *buflen)
+ __be32 **p, int *buflen)
{
return nfsd4_encode_name(rqstp, whotype, id, group, p, buflen);
}
+#define WORD0_ABSENT_FS_ATTRS (FATTR4_WORD0_FS_LOCATIONS | FATTR4_WORD0_FSID | \
+ FATTR4_WORD0_RDATTR_ERROR)
+#define WORD1_ABSENT_FS_ATTRS FATTR4_WORD1_MOUNTED_ON_FILEID
+
+static __be32 fattr_handle_absent_fs(u32 *bmval0, u32 *bmval1, u32 *rdattr_err)
+{
+ /* As per referral draft: */
+ if (*bmval0 & ~WORD0_ABSENT_FS_ATTRS ||
+ *bmval1 & ~WORD1_ABSENT_FS_ATTRS) {
+ if (*bmval0 & FATTR4_WORD0_RDATTR_ERROR ||
+ *bmval0 & FATTR4_WORD0_FS_LOCATIONS)
+ *rdattr_err = NFSERR_MOVED;
+ else
+ return nfserr_moved;
+ }
+ *bmval0 &= WORD0_ABSENT_FS_ATTRS;
+ *bmval1 &= WORD1_ABSENT_FS_ATTRS;
+ return 0;
+}
/*
* Note: @fhp can be NULL; in this case, we might have to compose the filehandle
* @countp is the buffer size in _words_; upon successful return this becomes
* replaced with the number of words written.
*/
-int
+__be32
nfsd4_encode_fattr(struct svc_fh *fhp, struct svc_export *exp,
- struct dentry *dentry, u32 *buffer, int *countp, u32 *bmval,
- struct svc_rqst *rqstp)
+ struct dentry *dentry, __be32 *buffer, int *countp, u32 *bmval,
+ struct svc_rqst *rqstp, int ignore_crossmnt)
{
u32 bmval0 = bmval[0];
u32 bmval1 = bmval[1];
+ u32 bmval2 = bmval[2];
struct kstat stat;
struct svc_fh tempfh;
struct kstatfs statfs;
int buflen = *countp << 2;
- u32 *attrlenp;
+ __be32 *attrlenp;
u32 dummy;
u64 dummy64;
- u32 *p = buffer;
- int status;
+ u32 rdattr_err = 0;
+ __be32 *p = buffer;
+ __be32 status;
+ int err;
int aclsupport = 0;
struct nfs4_acl *acl = NULL;
+ struct nfsd4_compoundres *resp = rqstp->rq_resp;
+ u32 minorversion = resp->cstate.minorversion;
BUG_ON(bmval1 & NFSD_WRITEONLY_ATTRS_WORD1);
- BUG_ON(bmval0 & ~NFSD_SUPPORTED_ATTRS_WORD0);
- BUG_ON(bmval1 & ~NFSD_SUPPORTED_ATTRS_WORD1);
+ BUG_ON(bmval0 & ~nfsd_suppattrs0(minorversion));
+ BUG_ON(bmval1 & ~nfsd_suppattrs1(minorversion));
+ BUG_ON(bmval2 & ~nfsd_suppattrs2(minorversion));
- status = vfs_getattr(exp->ex_mnt, dentry, &stat);
- if (status)
+ if (exp->ex_fslocs.migrated) {
+ BUG_ON(bmval[2]);
+ status = fattr_handle_absent_fs(&bmval0, &bmval1, &rdattr_err);
+ if (status)
+ goto out;
+ }
+
+ err = vfs_getattr(exp->ex_path.mnt, dentry, &stat);
+ if (err)
goto out_nfserr;
- if ((bmval0 & (FATTR4_WORD0_FILES_FREE | FATTR4_WORD0_FILES_TOTAL)) ||
+ if ((bmval0 & (FATTR4_WORD0_FILES_FREE | FATTR4_WORD0_FILES_TOTAL |
+ FATTR4_WORD0_MAXNAME)) ||
(bmval1 & (FATTR4_WORD1_SPACE_AVAIL | FATTR4_WORD1_SPACE_FREE |
FATTR4_WORD1_SPACE_TOTAL))) {
- status = vfs_statfs(dentry->d_inode->i_sb, &statfs);
- if (status)
+ err = vfs_statfs(dentry, &statfs);
+ if (err)
goto out_nfserr;
}
if ((bmval0 & (FATTR4_WORD0_FILEHANDLE | FATTR4_WORD0_FSID)) && !fhp) {
}
if (bmval0 & (FATTR4_WORD0_ACL | FATTR4_WORD0_ACLSUPPORT
| FATTR4_WORD0_SUPPORTED_ATTRS)) {
- status = nfsd4_get_nfs4_acl(rqstp, dentry, &acl);
- aclsupport = (status == 0);
+ err = nfsd4_get_nfs4_acl(rqstp, dentry, &acl);
+ aclsupport = (err == 0);
if (bmval0 & FATTR4_WORD0_ACL) {
- if (status == -EOPNOTSUPP)
+ if (err == -EOPNOTSUPP)
bmval0 &= ~FATTR4_WORD0_ACL;
- else if (status == -EINVAL) {
+ else if (err == -EINVAL) {
status = nfserr_attrnotsupp;
goto out;
- } else if (status != 0)
+ } else if (err != 0)
goto out_nfserr;
}
}
+ if (bmval0 & FATTR4_WORD0_FS_LOCATIONS) {
+ if (exp->ex_fslocs.locations == NULL) {
+ bmval0 &= ~FATTR4_WORD0_FS_LOCATIONS;
+ }
+ }
if ((buflen -= 16) < 0)
goto out_resource;
- WRITE32(2);
- WRITE32(bmval0);
- WRITE32(bmval1);
+ if (unlikely(bmval2)) {
+ WRITE32(3);
+ WRITE32(bmval0);
+ WRITE32(bmval1);
+ WRITE32(bmval2);
+ } else if (likely(bmval1)) {
+ WRITE32(2);
+ WRITE32(bmval0);
+ WRITE32(bmval1);
+ } else {
+ WRITE32(1);
+ WRITE32(bmval0);
+ }
attrlenp = p++; /* to be backfilled later */
if (bmval0 & FATTR4_WORD0_SUPPORTED_ATTRS) {
+ u32 word0 = nfsd_suppattrs0(minorversion);
+ u32 word1 = nfsd_suppattrs1(minorversion);
+ u32 word2 = nfsd_suppattrs2(minorversion);
+
if ((buflen -= 12) < 0)
goto out_resource;
- WRITE32(2);
- WRITE32(aclsupport ?
- NFSD_SUPPORTED_ATTRS_WORD0 :
- NFSD_SUPPORTED_ATTRS_WORD0 & ~FATTR4_WORD0_ACL);
- WRITE32(NFSD_SUPPORTED_ATTRS_WORD1);
+ if (!aclsupport)
+ word0 &= ~FATTR4_WORD0_ACL;
+ if (!exp->ex_fslocs.locations)
+ word0 &= ~FATTR4_WORD0_FS_LOCATIONS;
+ if (!word2) {
+ WRITE32(2);
+ WRITE32(word0);
+ WRITE32(word1);
+ } else {
+ WRITE32(3);
+ WRITE32(word0);
+ WRITE32(word1);
+ WRITE32(word2);
+ }
}
if (bmval0 & FATTR4_WORD0_TYPE) {
if ((buflen -= 4) < 0)
if (bmval0 & FATTR4_WORD0_FSID) {
if ((buflen -= 16) < 0)
goto out_resource;
- if (is_fsid(fhp, rqstp->rq_reffh)) {
+ if (exp->ex_fslocs.migrated) {
+ WRITE64(NFS4_REFERRAL_FSID_MAJOR);
+ WRITE64(NFS4_REFERRAL_FSID_MINOR);
+ } else switch(fsid_source(fhp)) {
+ case FSIDSOURCE_FSID:
WRITE64((u64)exp->ex_fsid);
WRITE64((u64)0);
- } else {
+ break;
+ case FSIDSOURCE_DEV:
WRITE32(0);
WRITE32(MAJOR(stat.dev));
WRITE32(0);
WRITE32(MINOR(stat.dev));
+ break;
+ case FSIDSOURCE_UUID:
+ WRITEMEM(exp->ex_uuid, 16);
+ break;
}
}
if (bmval0 & FATTR4_WORD0_UNIQUE_HANDLES) {
if (bmval0 & FATTR4_WORD0_RDATTR_ERROR) {
if ((buflen -= 4) < 0)
goto out_resource;
- WRITE32(0);
+ WRITE32(rdattr_err);
}
if (bmval0 & FATTR4_WORD0_ACL) {
struct nfs4_ace *ace;
- struct list_head *h;
if (acl == NULL) {
if ((buflen -= 4) < 0)
goto out_resource;
WRITE32(acl->naces);
- list_for_each(h, &acl->ace_head) {
- ace = list_entry(h, struct nfs4_ace, l_ace);
-
+ for (ace = acl->aces; ace < acl->aces + acl->naces; ace++) {
if ((buflen -= 4*3) < 0)
goto out_resource;
WRITE32(ace->type);
if (bmval0 & FATTR4_WORD0_FILEID) {
if ((buflen -= 8) < 0)
goto out_resource;
- WRITE64((u64) stat.ino);
+ WRITE64(stat.ino);
}
if (bmval0 & FATTR4_WORD0_FILES_AVAIL) {
if ((buflen -= 8) < 0)
goto out_resource;
WRITE64((u64) statfs.f_files);
}
+ if (bmval0 & FATTR4_WORD0_FS_LOCATIONS) {
+ status = nfsd4_encode_fs_locations(rqstp, exp, &p, &buflen);
+ if (status == nfserr_resource)
+ goto out_resource;
+ if (status)
+ goto out;
+ }
if (bmval0 & FATTR4_WORD0_HOMOGENEOUS) {
if ((buflen -= 4) < 0)
goto out_resource;
if (bmval0 & FATTR4_WORD0_MAXNAME) {
if ((buflen -= 4) < 0)
goto out_resource;
- WRITE32(~(u32) 0);
+ WRITE32(statfs.f_namelen);
}
if (bmval0 & FATTR4_WORD0_MAXREAD) {
if ((buflen -= 8) < 0)
goto out_resource;
- WRITE64((u64) NFSSVC_MAXBLKSIZE);
+ WRITE64((u64) svc_max_payload(rqstp));
}
if (bmval0 & FATTR4_WORD0_MAXWRITE) {
if ((buflen -= 8) < 0)
goto out_resource;
- WRITE64((u64) NFSSVC_MAXBLKSIZE);
+ WRITE64((u64) svc_max_payload(rqstp));
}
if (bmval1 & FATTR4_WORD1_MODE) {
if ((buflen -= 4) < 0)
WRITE32(stat.mtime.tv_nsec);
}
if (bmval1 & FATTR4_WORD1_MOUNTED_ON_FILEID) {
- struct dentry *mnt_pnt, *mnt_root;
-
if ((buflen -= 8) < 0)
goto out_resource;
- mnt_root = exp->ex_mnt->mnt_root;
- if (mnt_root->d_inode == dentry->d_inode) {
- mnt_pnt = exp->ex_mnt->mnt_mountpoint;
- WRITE64((u64) mnt_pnt->d_inode->i_ino);
- } else
- WRITE64((u64) stat.ino);
+ /*
+ * Get parent's attributes if not ignoring crossmount
+ * and this is the root of a cross-mounted filesystem.
+ */
+ if (ignore_crossmnt == 0 &&
+ exp->ex_path.mnt->mnt_root->d_inode == dentry->d_inode) {
+ err = vfs_getattr(exp->ex_path.mnt->mnt_parent,
+ exp->ex_path.mnt->mnt_mountpoint, &stat);
+ if (err)
+ goto out_nfserr;
+ }
+ WRITE64(stat.ino);
+ }
+ if (bmval2 & FATTR4_WORD2_SUPPATTR_EXCLCREAT) {
+ WRITE32(3);
+ WRITE32(NFSD_SUPPATTR_EXCLCREAT_WORD0);
+ WRITE32(NFSD_SUPPATTR_EXCLCREAT_WORD1);
+ WRITE32(NFSD_SUPPATTR_EXCLCREAT_WORD2);
}
+
*attrlenp = htonl((char *)p - (char *)attrlenp - 4);
*countp = p - buffer;
status = nfs_ok;
out:
- nfs4_acl_free(acl);
+ kfree(acl);
if (fhp == &tempfh)
fh_put(&tempfh);
return status;
out_nfserr:
- status = nfserrno(status);
+ status = nfserrno(err);
goto out;
out_resource:
*countp = 0;
goto out;
}
-static int
+static inline int attributes_need_mount(u32 *bmval)
+{
+ if (bmval[0] & ~(FATTR4_WORD0_RDATTR_ERROR | FATTR4_WORD0_LEASE_TIME))
+ return 1;
+ if (bmval[1] & ~FATTR4_WORD1_MOUNTED_ON_FILEID)
+ return 1;
+ return 0;
+}
+
+static __be32
nfsd4_encode_dirent_fattr(struct nfsd4_readdir *cd,
- const char *name, int namlen, u32 *p, int *buflen)
+ const char *name, int namlen, __be32 *p, int *buflen)
{
struct svc_export *exp = cd->rd_fhp->fh_export;
struct dentry *dentry;
- int nfserr;
+ __be32 nfserr;
+ int ignore_crossmnt = 0;
dentry = lookup_one_len(name, cd->rd_fhp->fh_dentry, namlen);
if (IS_ERR(dentry))
return nfserrno(PTR_ERR(dentry));
exp_get(exp);
- if (d_mountpoint(dentry)) {
- if (nfsd_cross_mnt(cd->rd_rqstp, &dentry, &exp)) {
+ /*
+ * In the case of a mountpoint, the client may be asking for
+ * attributes that are only properties of the underlying filesystem
+ * as opposed to the cross-mounted file system. In such a case,
+ * we will not follow the cross mount and will fill the attribtutes
+ * directly from the mountpoint dentry.
+ */
+ if (d_mountpoint(dentry) && !attributes_need_mount(cd->rd_bmval))
+ ignore_crossmnt = 1;
+ else if (d_mountpoint(dentry)) {
+ int err;
+
/*
- * -EAGAIN is the only error returned from
- * nfsd_cross_mnt() and it indicates that an
- * up-call has been initiated to fill in the export
- * options on exp. When the answer comes back,
- * this call will be retried.
+ * Why the heck aren't we just using nfsd_lookup??
+ * Different "."/".." handling? Something else?
+ * At least, add a comment here to explain....
*/
- nfserr = nfserr_dropit;
+ err = nfsd_cross_mnt(cd->rd_rqstp, &dentry, &exp);
+ if (err) {
+ nfserr = nfserrno(err);
goto out_put;
}
+ nfserr = check_nfsd_access(exp, cd->rd_rqstp);
+ if (nfserr)
+ goto out_put;
}
nfserr = nfsd4_encode_fattr(NULL, exp, dentry, p, buflen, cd->rd_bmval,
- cd->rd_rqstp);
+ cd->rd_rqstp, ignore_crossmnt);
out_put:
dput(dentry);
exp_put(exp);
return nfserr;
}
-static u32 *
-nfsd4_encode_rdattr_error(u32 *p, int buflen, int nfserr)
+static __be32 *
+nfsd4_encode_rdattr_error(__be32 *p, int buflen, __be32 nfserr)
{
- u32 *attrlenp;
+ __be32 *attrlenp;
if (buflen < 6)
return NULL;
}
static int
-nfsd4_encode_dirent(struct readdir_cd *ccd, const char *name, int namlen,
- loff_t offset, ino_t ino, unsigned int d_type)
+nfsd4_encode_dirent(void *ccdv, const char *name, int namlen,
+ loff_t offset, u64 ino, unsigned int d_type)
{
+ struct readdir_cd *ccd = ccdv;
struct nfsd4_readdir *cd = container_of(ccd, struct nfsd4_readdir, common);
int buflen;
- u32 *p = cd->buffer;
- int nfserr = nfserr_toosmall;
+ __be32 *p = cd->buffer;
+ __be32 nfserr = nfserr_toosmall;
/* In nfsv4, "." and ".." never make it onto the wire.. */
if (name && isdotent(name, namlen)) {
}
static void
-nfsd4_encode_access(struct nfsd4_compoundres *resp, int nfserr, struct nfsd4_access *access)
+nfsd4_encode_stateid(struct nfsd4_compoundres *resp, stateid_t *sid)
+{
+ __be32 *p;
+
+ RESERVE_SPACE(sizeof(stateid_t));
+ WRITE32(sid->si_generation);
+ WRITEMEM(&sid->si_opaque, sizeof(stateid_opaque_t));
+ ADJUST_ARGS();
+}
+
+static __be32
+nfsd4_encode_access(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_access *access)
{
- ENCODE_HEAD;
+ __be32 *p;
if (!nfserr) {
RESERVE_SPACE(8);
WRITE32(access->ac_resp_access);
ADJUST_ARGS();
}
+ return nfserr;
}
-static void
-nfsd4_encode_close(struct nfsd4_compoundres *resp, int nfserr, struct nfsd4_close *close)
+static __be32
+nfsd4_encode_close(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_close *close)
{
ENCODE_SEQID_OP_HEAD;
- if (!nfserr) {
- RESERVE_SPACE(sizeof(stateid_t));
- WRITE32(close->cl_stateid.si_generation);
- WRITEMEM(&close->cl_stateid.si_opaque, sizeof(stateid_opaque_t));
- ADJUST_ARGS();
- }
+ if (!nfserr)
+ nfsd4_encode_stateid(resp, &close->cl_stateid);
+
ENCODE_SEQID_OP_TAIL(close->cl_stateowner);
+ return nfserr;
}
-static void
-nfsd4_encode_commit(struct nfsd4_compoundres *resp, int nfserr, struct nfsd4_commit *commit)
+static __be32
+nfsd4_encode_commit(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_commit *commit)
{
- ENCODE_HEAD;
+ __be32 *p;
if (!nfserr) {
RESERVE_SPACE(8);
WRITEMEM(commit->co_verf.data, 8);
ADJUST_ARGS();
}
+ return nfserr;
}
-static void
-nfsd4_encode_create(struct nfsd4_compoundres *resp, int nfserr, struct nfsd4_create *create)
+static __be32
+nfsd4_encode_create(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_create *create)
{
- ENCODE_HEAD;
+ __be32 *p;
if (!nfserr) {
RESERVE_SPACE(32);
WRITE32(create->cr_bmval[1]);
ADJUST_ARGS();
}
+ return nfserr;
}
-static int
-nfsd4_encode_getattr(struct nfsd4_compoundres *resp, int nfserr, struct nfsd4_getattr *getattr)
+static __be32
+nfsd4_encode_getattr(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_getattr *getattr)
{
struct svc_fh *fhp = getattr->ga_fhp;
int buflen;
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,
- resp->rqstp);
-
+ resp->rqstp, 0);
if (!nfserr)
resp->p += buflen;
return nfserr;
}
-static void
-nfsd4_encode_getfh(struct nfsd4_compoundres *resp, int nfserr, struct svc_fh *fhp)
+static __be32
+nfsd4_encode_getfh(struct nfsd4_compoundres *resp, __be32 nfserr, struct svc_fh **fhpp)
{
+ struct svc_fh *fhp = *fhpp;
unsigned int len;
- ENCODE_HEAD;
+ __be32 *p;
if (!nfserr) {
len = fhp->fh_handle.fh_size;
WRITEMEM(&fhp->fh_handle.fh_base, len);
ADJUST_ARGS();
}
+ return nfserr;
}
/*
static void
nfsd4_encode_lock_denied(struct nfsd4_compoundres *resp, struct nfsd4_lock_denied *ld)
{
- ENCODE_HEAD;
+ __be32 *p;
RESERVE_SPACE(32 + XDR_LEN(ld->ld_sop ? ld->ld_sop->so_owner.len : 0));
WRITE64(ld->ld_start);
ADJUST_ARGS();
}
-static void
-nfsd4_encode_lock(struct nfsd4_compoundres *resp, int nfserr, struct nfsd4_lock *lock)
+static __be32
+nfsd4_encode_lock(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_lock *lock)
{
ENCODE_SEQID_OP_HEAD;
- if (!nfserr) {
- RESERVE_SPACE(4 + sizeof(stateid_t));
- WRITE32(lock->lk_resp_stateid.si_generation);
- WRITEMEM(&lock->lk_resp_stateid.si_opaque, sizeof(stateid_opaque_t));
- ADJUST_ARGS();
- } else if (nfserr == nfserr_denied)
+ if (!nfserr)
+ nfsd4_encode_stateid(resp, &lock->lk_resp_stateid);
+ else if (nfserr == nfserr_denied)
nfsd4_encode_lock_denied(resp, &lock->lk_denied);
ENCODE_SEQID_OP_TAIL(lock->lk_replay_owner);
+ return nfserr;
}
-static void
-nfsd4_encode_lockt(struct nfsd4_compoundres *resp, int nfserr, struct nfsd4_lockt *lockt)
+static __be32
+nfsd4_encode_lockt(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_lockt *lockt)
{
if (nfserr == nfserr_denied)
nfsd4_encode_lock_denied(resp, &lockt->lt_denied);
+ return nfserr;
}
-static void
-nfsd4_encode_locku(struct nfsd4_compoundres *resp, int nfserr, struct nfsd4_locku *locku)
+static __be32
+nfsd4_encode_locku(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_locku *locku)
{
ENCODE_SEQID_OP_HEAD;
- if (!nfserr) {
- RESERVE_SPACE(sizeof(stateid_t));
- WRITE32(locku->lu_stateid.si_generation);
- WRITEMEM(&locku->lu_stateid.si_opaque, sizeof(stateid_opaque_t));
- ADJUST_ARGS();
- }
-
+ if (!nfserr)
+ nfsd4_encode_stateid(resp, &locku->lu_stateid);
+
ENCODE_SEQID_OP_TAIL(locku->lu_stateowner);
+ return nfserr;
}
-static void
-nfsd4_encode_link(struct nfsd4_compoundres *resp, int nfserr, struct nfsd4_link *link)
+static __be32
+nfsd4_encode_link(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_link *link)
{
- ENCODE_HEAD;
+ __be32 *p;
if (!nfserr) {
RESERVE_SPACE(20);
WRITECINFO(link->li_cinfo);
ADJUST_ARGS();
}
+ return nfserr;
}
-static void
-nfsd4_encode_open(struct nfsd4_compoundres *resp, int nfserr, struct nfsd4_open *open)
+static __be32
+nfsd4_encode_open(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_open *open)
{
+ __be32 *p;
ENCODE_SEQID_OP_HEAD;
if (nfserr)
goto out;
- RESERVE_SPACE(36 + sizeof(stateid_t));
- WRITE32(open->op_stateid.si_generation);
- WRITEMEM(&open->op_stateid.si_opaque, sizeof(stateid_opaque_t));
+ nfsd4_encode_stateid(resp, &open->op_stateid);
+ RESERVE_SPACE(40);
WRITECINFO(open->op_cinfo);
WRITE32(open->op_rflags);
WRITE32(2);
case NFS4_OPEN_DELEGATE_NONE:
break;
case NFS4_OPEN_DELEGATE_READ:
- RESERVE_SPACE(20 + sizeof(stateid_t));
- WRITEMEM(&open->op_delegate_stateid, sizeof(stateid_t));
+ nfsd4_encode_stateid(resp, &open->op_delegate_stateid);
+ RESERVE_SPACE(20);
WRITE32(open->op_recall);
/*
ADJUST_ARGS();
break;
case NFS4_OPEN_DELEGATE_WRITE:
- RESERVE_SPACE(32 + sizeof(stateid_t));
- WRITEMEM(&open->op_delegate_stateid, sizeof(stateid_t));
+ nfsd4_encode_stateid(resp, &open->op_delegate_stateid);
+ RESERVE_SPACE(32);
WRITE32(0);
/*
/* XXX save filehandle here */
out:
ENCODE_SEQID_OP_TAIL(open->op_stateowner);
+ return nfserr;
}
-static void
-nfsd4_encode_open_confirm(struct nfsd4_compoundres *resp, int nfserr, struct nfsd4_open_confirm *oc)
+static __be32
+nfsd4_encode_open_confirm(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_open_confirm *oc)
{
ENCODE_SEQID_OP_HEAD;
-
- if (!nfserr) {
- RESERVE_SPACE(sizeof(stateid_t));
- WRITE32(oc->oc_resp_stateid.si_generation);
- WRITEMEM(&oc->oc_resp_stateid.si_opaque, sizeof(stateid_opaque_t));
- ADJUST_ARGS();
- }
+
+ if (!nfserr)
+ nfsd4_encode_stateid(resp, &oc->oc_resp_stateid);
ENCODE_SEQID_OP_TAIL(oc->oc_stateowner);
+ return nfserr;
}
-static void
-nfsd4_encode_open_downgrade(struct nfsd4_compoundres *resp, int nfserr, struct nfsd4_open_downgrade *od)
+static __be32
+nfsd4_encode_open_downgrade(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_open_downgrade *od)
{
ENCODE_SEQID_OP_HEAD;
-
- if (!nfserr) {
- RESERVE_SPACE(sizeof(stateid_t));
- WRITE32(od->od_stateid.si_generation);
- WRITEMEM(&od->od_stateid.si_opaque, sizeof(stateid_opaque_t));
- ADJUST_ARGS();
- }
+
+ if (!nfserr)
+ nfsd4_encode_stateid(resp, &od->od_stateid);
ENCODE_SEQID_OP_TAIL(od->od_stateowner);
+ return nfserr;
}
-static int
-nfsd4_encode_read(struct nfsd4_compoundres *resp, int nfserr, struct nfsd4_read *read)
+static __be32
+nfsd4_encode_read(struct nfsd4_compoundres *resp, __be32 nfserr,
+ struct nfsd4_read *read)
{
u32 eof;
int v, pn;
unsigned long maxcount;
long len;
- ENCODE_HEAD;
+ __be32 *p;
if (nfserr)
return nfserr;
RESERVE_SPACE(8); /* eof flag and byte count */
- maxcount = NFSSVC_MAXBLKSIZE;
+ maxcount = svc_max_payload(resp->rqstp);
if (maxcount > read->rd_length)
maxcount = read->rd_length;
len = maxcount;
v = 0;
while (len > 0) {
- pn = resp->rqstp->rq_resused;
- svc_take_page(resp->rqstp);
- read->rd_iov[v].iov_base = page_address(resp->rqstp->rq_respages[pn]);
- read->rd_iov[v].iov_len = len < PAGE_SIZE ? len : PAGE_SIZE;
+ pn = resp->rqstp->rq_resused++;
+ resp->rqstp->rq_vec[v].iov_base =
+ page_address(resp->rqstp->rq_respages[pn]);
+ resp->rqstp->rq_vec[v].iov_len =
+ len < PAGE_SIZE ? len : PAGE_SIZE;
v++;
len -= PAGE_SIZE;
}
read->rd_vlen = v;
nfserr = nfsd_read(read->rd_rqstp, read->rd_fhp, read->rd_filp,
- read->rd_offset, read->rd_iov, read->rd_vlen,
+ read->rd_offset, resp->rqstp->rq_vec, read->rd_vlen,
&maxcount);
if (nfserr == nfserr_symlink)
nfserr = nfserr_inval;
if (nfserr)
return nfserr;
- eof = (read->rd_offset + maxcount >= read->rd_fhp->fh_dentry->d_inode->i_size);
+ 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*)resp->p) - (char*)resp->xbuf->head[0].iov_base;
-
+ resp->xbuf->head[0].iov_len = (char*)p
+ - (char*)resp->xbuf->head[0].iov_base;
resp->xbuf->page_len = maxcount;
- /* read zero bytes -> don't set up tail */
- if(!maxcount)
- return 0;
-
- /* set up page for remaining responses */
- svc_take_page(resp->rqstp);
- resp->xbuf->tail[0].iov_base =
- page_address(resp->rqstp->rq_respages[resp->rqstp->rq_resused-1]);
- resp->rqstp->rq_restailpage = resp->rqstp->rq_resused-1;
+ /* Use rest of head for padding and remaining ops: */
+ resp->xbuf->tail[0].iov_base = p;
resp->xbuf->tail[0].iov_len = 0;
- resp->p = resp->xbuf->tail[0].iov_base;
- resp->end = resp->p + PAGE_SIZE/4;
-
if (maxcount&3) {
- *(resp->p)++ = 0;
+ RESERVE_SPACE(4);
+ WRITE32(0);
resp->xbuf->tail[0].iov_base += maxcount&3;
resp->xbuf->tail[0].iov_len = 4 - (maxcount&3);
+ ADJUST_ARGS();
}
return 0;
}
-static int
-nfsd4_encode_readlink(struct nfsd4_compoundres *resp, int nfserr, struct nfsd4_readlink *readlink)
+static __be32
+nfsd4_encode_readlink(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_readlink *readlink)
{
int maxcount;
char *page;
- ENCODE_HEAD;
+ __be32 *p;
if (nfserr)
return nfserr;
if (resp->xbuf->page_len)
return nfserr_resource;
- svc_take_page(resp->rqstp);
- page = page_address(resp->rqstp->rq_respages[resp->rqstp->rq_resused-1]);
+ page = page_address(resp->rqstp->rq_respages[resp->rqstp->rq_resused++]);
maxcount = PAGE_SIZE;
RESERVE_SPACE(4);
WRITE32(maxcount);
ADJUST_ARGS();
- resp->xbuf->head[0].iov_len = ((char*)resp->p) - (char*)resp->xbuf->head[0].iov_base;
+ resp->xbuf->head[0].iov_len = (char*)p
+ - (char*)resp->xbuf->head[0].iov_base;
+ resp->xbuf->page_len = maxcount;
- svc_take_page(resp->rqstp);
- resp->xbuf->tail[0].iov_base =
- page_address(resp->rqstp->rq_respages[resp->rqstp->rq_resused-1]);
- resp->rqstp->rq_restailpage = resp->rqstp->rq_resused-1;
+ /* Use rest of head for padding and remaining ops: */
+ resp->xbuf->tail[0].iov_base = p;
resp->xbuf->tail[0].iov_len = 0;
- resp->p = resp->xbuf->tail[0].iov_base;
- resp->end = resp->p + PAGE_SIZE/4;
-
- resp->xbuf->page_len = maxcount;
if (maxcount&3) {
- *(resp->p)++ = 0;
+ RESERVE_SPACE(4);
+ WRITE32(0);
resp->xbuf->tail[0].iov_base += maxcount&3;
resp->xbuf->tail[0].iov_len = 4 - (maxcount&3);
+ ADJUST_ARGS();
}
return 0;
}
-static int
-nfsd4_encode_readdir(struct nfsd4_compoundres *resp, int nfserr, struct nfsd4_readdir *readdir)
+static __be32
+nfsd4_encode_readdir(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_readdir *readdir)
{
int maxcount;
loff_t offset;
- u32 *page, *savep;
- ENCODE_HEAD;
+ __be32 *page, *savep, *tailbase;
+ __be32 *p;
if (nfserr)
return nfserr;
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)
goto err_no_verf;
}
- svc_take_page(resp->rqstp);
- page = page_address(resp->rqstp->rq_respages[resp->rqstp->rq_resused-1]);
+ page = page_address(resp->rqstp->rq_respages[resp->rqstp->rq_resused++]);
readdir->common.err = 0;
readdir->buflen = maxcount;
readdir->buffer = page;
p = readdir->buffer;
*p++ = 0; /* no more entries */
*p++ = htonl(readdir->common.err == nfserr_eof);
- resp->xbuf->page_len = ((char*)p) - (char*)page_address(resp->rqstp->rq_respages[resp->rqstp->rq_resused-1]);
+ resp->xbuf->page_len = ((char*)p) - (char*)page_address(
+ resp->rqstp->rq_respages[resp->rqstp->rq_resused-1]);
- /* allocate a page for the tail */
- svc_take_page(resp->rqstp);
- resp->xbuf->tail[0].iov_base =
- page_address(resp->rqstp->rq_respages[resp->rqstp->rq_resused-1]);
- resp->rqstp->rq_restailpage = resp->rqstp->rq_resused-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/4;
+ resp->end = resp->p + (PAGE_SIZE - resp->xbuf->head[0].iov_len)/4;
return 0;
err_no_verf:
return nfserr;
}
-static void
-nfsd4_encode_remove(struct nfsd4_compoundres *resp, int nfserr, struct nfsd4_remove *remove)
+static __be32
+nfsd4_encode_remove(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_remove *remove)
{
- ENCODE_HEAD;
+ __be32 *p;
if (!nfserr) {
RESERVE_SPACE(20);
WRITECINFO(remove->rm_cinfo);
ADJUST_ARGS();
}
+ return nfserr;
}
-static void
-nfsd4_encode_rename(struct nfsd4_compoundres *resp, int nfserr, struct nfsd4_rename *rename)
+static __be32
+nfsd4_encode_rename(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_rename *rename)
{
- ENCODE_HEAD;
+ __be32 *p;
if (!nfserr) {
RESERVE_SPACE(40);
WRITECINFO(rename->rn_tinfo);
ADJUST_ARGS();
}
+ return nfserr;
+}
+
+static __be32
+nfsd4_encode_secinfo(struct nfsd4_compoundres *resp, __be32 nfserr,
+ struct nfsd4_secinfo *secinfo)
+{
+ int i = 0;
+ struct svc_export *exp = secinfo->si_exp;
+ u32 nflavs;
+ struct exp_flavor_info *flavs;
+ struct exp_flavor_info def_flavs[2];
+ __be32 *p;
+
+ if (nfserr)
+ goto out;
+ if (exp->ex_nflavors) {
+ flavs = exp->ex_flavors;
+ nflavs = exp->ex_nflavors;
+ } else { /* Handling of some defaults in absence of real secinfo: */
+ flavs = def_flavs;
+ if (exp->ex_client->flavour->flavour == RPC_AUTH_UNIX) {
+ nflavs = 2;
+ flavs[0].pseudoflavor = RPC_AUTH_UNIX;
+ flavs[1].pseudoflavor = RPC_AUTH_NULL;
+ } else if (exp->ex_client->flavour->flavour == RPC_AUTH_GSS) {
+ nflavs = 1;
+ flavs[0].pseudoflavor
+ = svcauth_gss_flavor(exp->ex_client);
+ } else {
+ nflavs = 1;
+ flavs[0].pseudoflavor
+ = exp->ex_client->flavour->flavour;
+ }
+ }
+
+ RESERVE_SPACE(4);
+ WRITE32(nflavs);
+ ADJUST_ARGS();
+ for (i = 0; i < nflavs; i++) {
+ u32 flav = flavs[i].pseudoflavor;
+ struct gss_api_mech *gm = gss_mech_get_by_pseudoflavor(flav);
+
+ if (gm) {
+ RESERVE_SPACE(4);
+ WRITE32(RPC_AUTH_GSS);
+ ADJUST_ARGS();
+ RESERVE_SPACE(4 + gm->gm_oid.len);
+ WRITE32(gm->gm_oid.len);
+ WRITEMEM(gm->gm_oid.data, gm->gm_oid.len);
+ ADJUST_ARGS();
+ RESERVE_SPACE(4);
+ WRITE32(0); /* qop */
+ ADJUST_ARGS();
+ RESERVE_SPACE(4);
+ WRITE32(gss_pseudoflavor_to_service(gm, flav));
+ ADJUST_ARGS();
+ gss_mech_put(gm);
+ } else {
+ RESERVE_SPACE(4);
+ WRITE32(flav);
+ ADJUST_ARGS();
+ }
+ }
+out:
+ if (exp)
+ exp_put(exp);
+ return nfserr;
}
/*
* The SETATTR encode routine is special -- it always encodes a bitmap,
* regardless of the error status.
*/
-static void
-nfsd4_encode_setattr(struct nfsd4_compoundres *resp, int nfserr, struct nfsd4_setattr *setattr)
+static __be32
+nfsd4_encode_setattr(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_setattr *setattr)
{
- ENCODE_HEAD;
+ __be32 *p;
RESERVE_SPACE(12);
if (nfserr) {
WRITE32(setattr->sa_bmval[1]);
}
ADJUST_ARGS();
+ return nfserr;
}
-static void
-nfsd4_encode_setclientid(struct nfsd4_compoundres *resp, int nfserr, struct nfsd4_setclientid *scd)
+static __be32
+nfsd4_encode_setclientid(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_setclientid *scd)
{
- ENCODE_HEAD;
+ __be32 *p;
if (!nfserr) {
RESERVE_SPACE(8 + sizeof(nfs4_verifier));
WRITE32(0);
ADJUST_ARGS();
}
+ return nfserr;
}
-static void
-nfsd4_encode_write(struct nfsd4_compoundres *resp, int nfserr, struct nfsd4_write *write)
+static __be32
+nfsd4_encode_write(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_write *write)
{
- ENCODE_HEAD;
+ __be32 *p;
if (!nfserr) {
RESERVE_SPACE(16);
WRITEMEM(write->wr_verifier.data, 8);
ADJUST_ARGS();
}
+ return nfserr;
+}
+
+static __be32
+nfsd4_encode_exchange_id(struct nfsd4_compoundres *resp, int nfserr,
+ struct nfsd4_exchange_id *exid)
+{
+ __be32 *p;
+ char *major_id;
+ char *server_scope;
+ int major_id_sz;
+ int server_scope_sz;
+ uint64_t minor_id = 0;
+
+ if (nfserr)
+ return nfserr;
+
+ major_id = utsname()->nodename;
+ major_id_sz = strlen(major_id);
+ server_scope = utsname()->nodename;
+ server_scope_sz = strlen(server_scope);
+
+ RESERVE_SPACE(
+ 8 /* eir_clientid */ +
+ 4 /* eir_sequenceid */ +
+ 4 /* eir_flags */ +
+ 4 /* spr_how (SP4_NONE) */ +
+ 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) */);
+
+ WRITEMEM(&exid->clientid, 8);
+ WRITE32(exid->seqid);
+ WRITE32(exid->flags);
+
+ /* state_protect4_r. Currently only support SP4_NONE */
+ BUG_ON(exid->spa_how != SP4_NONE);
+ WRITE32(exid->spa_how);
+
+ /* The server_owner struct */
+ WRITE64(minor_id); /* Minor id */
+ /* major id */
+ WRITE32(major_id_sz);
+ WRITEMEM(major_id, major_id_sz);
+
+ /* Server scope */
+ WRITE32(server_scope_sz);
+ WRITEMEM(server_scope, server_scope_sz);
+
+ /* Implementation id */
+ WRITE32(0); /* zero length nfs_impl_id4 array */
+ ADJUST_ARGS();
+ return 0;
+}
+
+static __be32
+nfsd4_encode_create_session(struct nfsd4_compoundres *resp, int nfserr,
+ struct nfsd4_create_session *sess)
+{
+ __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();
+
+ if (sess->fore_channel.nr_rdma_attrs) {
+ RESERVE_SPACE(4);
+ WRITE32(sess->fore_channel.rdma_attrs);
+ ADJUST_ARGS();
+ }
+
+ 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();
+
+ if (sess->back_channel.nr_rdma_attrs) {
+ RESERVE_SPACE(4);
+ WRITE32(sess->back_channel.rdma_attrs);
+ ADJUST_ARGS();
+ }
+ return 0;
+}
+
+static __be32
+nfsd4_encode_destroy_session(struct nfsd4_compoundres *resp, int nfserr,
+ struct nfsd4_destroy_session *destroy_session)
+{
+ return nfserr;
+}
+
+__be32
+nfsd4_encode_sequence(struct nfsd4_compoundres *resp, int nfserr,
+ struct nfsd4_sequence *seq)
+{
+ __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);
+ WRITE32(seq->maxslots);
+ /*
+ * FIXME: for now:
+ * target_maxslots = maxslots
+ * status_flags = 0
+ */
+ WRITE32(seq->maxslots);
+ WRITE32(0);
+
+ ADJUST_ARGS();
+ return 0;
+}
+
+static __be32
+nfsd4_encode_noop(struct nfsd4_compoundres *resp, __be32 nfserr, void *p)
+{
+ return nfserr;
+}
+
+typedef __be32(* nfsd4_enc)(struct nfsd4_compoundres *, __be32, void *);
+
+/*
+ * Note: nfsd4_enc_ops vector is shared for v4.0 and v4.1
+ * since we don't need to filter out obsolete ops as this is
+ * done in the decoding phase.
+ */
+static nfsd4_enc nfsd4_enc_ops[] = {
+ [OP_ACCESS] = (nfsd4_enc)nfsd4_encode_access,
+ [OP_CLOSE] = (nfsd4_enc)nfsd4_encode_close,
+ [OP_COMMIT] = (nfsd4_enc)nfsd4_encode_commit,
+ [OP_CREATE] = (nfsd4_enc)nfsd4_encode_create,
+ [OP_DELEGPURGE] = (nfsd4_enc)nfsd4_encode_noop,
+ [OP_DELEGRETURN] = (nfsd4_enc)nfsd4_encode_noop,
+ [OP_GETATTR] = (nfsd4_enc)nfsd4_encode_getattr,
+ [OP_GETFH] = (nfsd4_enc)nfsd4_encode_getfh,
+ [OP_LINK] = (nfsd4_enc)nfsd4_encode_link,
+ [OP_LOCK] = (nfsd4_enc)nfsd4_encode_lock,
+ [OP_LOCKT] = (nfsd4_enc)nfsd4_encode_lockt,
+ [OP_LOCKU] = (nfsd4_enc)nfsd4_encode_locku,
+ [OP_LOOKUP] = (nfsd4_enc)nfsd4_encode_noop,
+ [OP_LOOKUPP] = (nfsd4_enc)nfsd4_encode_noop,
+ [OP_NVERIFY] = (nfsd4_enc)nfsd4_encode_noop,
+ [OP_OPEN] = (nfsd4_enc)nfsd4_encode_open,
+ [OP_OPENATTR] = (nfsd4_enc)nfsd4_encode_noop,
+ [OP_OPEN_CONFIRM] = (nfsd4_enc)nfsd4_encode_open_confirm,
+ [OP_OPEN_DOWNGRADE] = (nfsd4_enc)nfsd4_encode_open_downgrade,
+ [OP_PUTFH] = (nfsd4_enc)nfsd4_encode_noop,
+ [OP_PUTPUBFH] = (nfsd4_enc)nfsd4_encode_noop,
+ [OP_PUTROOTFH] = (nfsd4_enc)nfsd4_encode_noop,
+ [OP_READ] = (nfsd4_enc)nfsd4_encode_read,
+ [OP_READDIR] = (nfsd4_enc)nfsd4_encode_readdir,
+ [OP_READLINK] = (nfsd4_enc)nfsd4_encode_readlink,
+ [OP_REMOVE] = (nfsd4_enc)nfsd4_encode_remove,
+ [OP_RENAME] = (nfsd4_enc)nfsd4_encode_rename,
+ [OP_RENEW] = (nfsd4_enc)nfsd4_encode_noop,
+ [OP_RESTOREFH] = (nfsd4_enc)nfsd4_encode_noop,
+ [OP_SAVEFH] = (nfsd4_enc)nfsd4_encode_noop,
+ [OP_SECINFO] = (nfsd4_enc)nfsd4_encode_secinfo,
+ [OP_SETATTR] = (nfsd4_enc)nfsd4_encode_setattr,
+ [OP_SETCLIENTID] = (nfsd4_enc)nfsd4_encode_setclientid,
+ [OP_SETCLIENTID_CONFIRM] = (nfsd4_enc)nfsd4_encode_noop,
+ [OP_VERIFY] = (nfsd4_enc)nfsd4_encode_noop,
+ [OP_WRITE] = (nfsd4_enc)nfsd4_encode_write,
+ [OP_RELEASE_LOCKOWNER] = (nfsd4_enc)nfsd4_encode_noop,
+
+ /* NFSv4.1 operations */
+ [OP_BACKCHANNEL_CTL] = (nfsd4_enc)nfsd4_encode_noop,
+ [OP_BIND_CONN_TO_SESSION] = (nfsd4_enc)nfsd4_encode_noop,
+ [OP_EXCHANGE_ID] = (nfsd4_enc)nfsd4_encode_exchange_id,
+ [OP_CREATE_SESSION] = (nfsd4_enc)nfsd4_encode_create_session,
+ [OP_DESTROY_SESSION] = (nfsd4_enc)nfsd4_encode_destroy_session,
+ [OP_FREE_STATEID] = (nfsd4_enc)nfsd4_encode_noop,
+ [OP_GET_DIR_DELEGATION] = (nfsd4_enc)nfsd4_encode_noop,
+ [OP_GETDEVICEINFO] = (nfsd4_enc)nfsd4_encode_noop,
+ [OP_GETDEVICELIST] = (nfsd4_enc)nfsd4_encode_noop,
+ [OP_LAYOUTCOMMIT] = (nfsd4_enc)nfsd4_encode_noop,
+ [OP_LAYOUTGET] = (nfsd4_enc)nfsd4_encode_noop,
+ [OP_LAYOUTRETURN] = (nfsd4_enc)nfsd4_encode_noop,
+ [OP_SECINFO_NO_NAME] = (nfsd4_enc)nfsd4_encode_noop,
+ [OP_SEQUENCE] = (nfsd4_enc)nfsd4_encode_sequence,
+ [OP_SET_SSV] = (nfsd4_enc)nfsd4_encode_noop,
+ [OP_TEST_STATEID] = (nfsd4_enc)nfsd4_encode_noop,
+ [OP_WANT_DELEGATION] = (nfsd4_enc)nfsd4_encode_noop,
+ [OP_DESTROY_CLIENTID] = (nfsd4_enc)nfsd4_encode_noop,
+ [OP_RECLAIM_COMPLETE] = (nfsd4_enc)nfsd4_encode_noop,
+};
+
+/*
+ * Calculate the total amount of memory that the compound response has taken
+ * after encoding the current operation.
+ *
+ * pad: add on 8 bytes for the next operation's op_code and status so that
+ * there is room to cache a failure on the next operation.
+ *
+ * Compare this length to the session se_fmaxresp_cached.
+ *
+ * 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.
+ */
+static int nfsd4_check_drc_limit(struct nfsd4_compoundres *resp)
+{
+ int status = 0;
+ struct xdr_buf *xb = &resp->rqstp->rq_res;
+ struct nfsd4_compoundargs *args = resp->rqstp->rq_argp;
+ struct nfsd4_session *session = NULL;
+ struct nfsd4_slot *slot = resp->cstate.slot;
+ u32 length, tlen = 0, pad = 8;
+
+ if (!nfsd4_has_session(&resp->cstate))
+ return status;
+
+ session = resp->cstate.session;
+ if (session == NULL || slot->sl_cache_entry.ce_cachethis == 0)
+ return status;
+
+ if (resp->opcnt >= args->opcnt)
+ pad = 0; /* this is the last operation */
+
+ 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_fmaxresp_cached)
+ return status;
+ else
+ return nfserr_rep_too_big_to_cache;
}
void
nfsd4_encode_operation(struct nfsd4_compoundres *resp, struct nfsd4_op *op)
{
- u32 *statp;
- ENCODE_HEAD;
+ __be32 *statp;
+ __be32 *p;
RESERVE_SPACE(8);
WRITE32(op->opnum);
statp = p++; /* to be backfilled at the end */
ADJUST_ARGS();
- switch (op->opnum) {
- case OP_ACCESS:
- nfsd4_encode_access(resp, op->status, &op->u.access);
- break;
- case OP_CLOSE:
- nfsd4_encode_close(resp, op->status, &op->u.close);
- break;
- case OP_COMMIT:
- nfsd4_encode_commit(resp, op->status, &op->u.commit);
- break;
- case OP_CREATE:
- nfsd4_encode_create(resp, op->status, &op->u.create);
- break;
- case OP_DELEGRETURN:
- break;
- case OP_GETATTR:
- op->status = nfsd4_encode_getattr(resp, op->status, &op->u.getattr);
- break;
- case OP_GETFH:
- nfsd4_encode_getfh(resp, op->status, op->u.getfh);
- break;
- case OP_LINK:
- nfsd4_encode_link(resp, op->status, &op->u.link);
- break;
- case OP_LOCK:
- nfsd4_encode_lock(resp, op->status, &op->u.lock);
- break;
- case OP_LOCKT:
- nfsd4_encode_lockt(resp, op->status, &op->u.lockt);
- break;
- case OP_LOCKU:
- nfsd4_encode_locku(resp, op->status, &op->u.locku);
- break;
- case OP_LOOKUP:
- break;
- case OP_LOOKUPP:
- break;
- case OP_NVERIFY:
- break;
- case OP_OPEN:
- nfsd4_encode_open(resp, op->status, &op->u.open);
- break;
- case OP_OPEN_CONFIRM:
- nfsd4_encode_open_confirm(resp, op->status, &op->u.open_confirm);
- break;
- case OP_OPEN_DOWNGRADE:
- nfsd4_encode_open_downgrade(resp, op->status, &op->u.open_downgrade);
- break;
- case OP_PUTFH:
- break;
- case OP_PUTROOTFH:
- break;
- case OP_READ:
- op->status = nfsd4_encode_read(resp, op->status, &op->u.read);
- break;
- case OP_READDIR:
- op->status = nfsd4_encode_readdir(resp, op->status, &op->u.readdir);
- break;
- case OP_READLINK:
- op->status = nfsd4_encode_readlink(resp, op->status, &op->u.readlink);
- break;
- case OP_REMOVE:
- nfsd4_encode_remove(resp, op->status, &op->u.remove);
- break;
- case OP_RENAME:
- nfsd4_encode_rename(resp, op->status, &op->u.rename);
- break;
- case OP_RENEW:
- break;
- case OP_RESTOREFH:
- break;
- case OP_SAVEFH:
- break;
- case OP_SETATTR:
- nfsd4_encode_setattr(resp, op->status, &op->u.setattr);
- break;
- case OP_SETCLIENTID:
- nfsd4_encode_setclientid(resp, op->status, &op->u.setclientid);
- break;
- case OP_SETCLIENTID_CONFIRM:
- break;
- case OP_VERIFY:
- break;
- case OP_WRITE:
- nfsd4_encode_write(resp, op->status, &op->u.write);
- break;
- case OP_RELEASE_LOCKOWNER:
- break;
- default:
- break;
- }
-
+ 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);
+ /* nfsd4_check_drc_limit guarantees enough room for error status */
+ if (!op->status && nfsd4_check_drc_limit(resp))
+ op->status = nfserr_rep_too_big_to_cache;
+status:
/*
* Note: We write the status directly, instead of using WRITE32(),
* since it is already in network byte order.
void
nfsd4_encode_replay(struct nfsd4_compoundres *resp, struct nfsd4_op *op)
{
- ENCODE_HEAD;
+ __be32 *p;
struct nfs4_replay *rp = op->replay;
BUG_ON(!rp);
*/
int
-nfs4svc_encode_voidres(struct svc_rqst *rqstp, u32 *p, void *dummy)
+nfs4svc_encode_voidres(struct svc_rqst *rqstp, __be32 *p, void *dummy)
{
return xdr_ressize_check(rqstp, p);
}
}
int
-nfs4svc_decode_compoundargs(struct svc_rqst *rqstp, u32 *p, struct nfsd4_compoundargs *args)
+nfs4svc_decode_compoundargs(struct svc_rqst *rqstp, __be32 *p, struct nfsd4_compoundargs *args)
{
- int status;
+ __be32 status;
args->p = p;
args->end = rqstp->rq_arg.head[0].iov_base + rqstp->rq_arg.head[0].iov_len;
}
int
-nfs4svc_encode_compoundres(struct svc_rqst *rqstp, u32 *p, struct nfsd4_compoundres *resp)
+nfs4svc_encode_compoundres(struct svc_rqst *rqstp, __be32 *p, struct nfsd4_compoundres *resp)
{
/*
* All that remains is to write the tag and operation count...
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(&resp->cstate)) {
+ if (resp->cstate.status == nfserr_replay_cache &&
+ !nfsd4_not_cached(resp)) {
+ iov->iov_len = resp->cstate.iovlen;
+ } else {
+ nfsd4_store_cache_entry(resp);
+ dprintk("%s: SET SLOT STATE TO AVAILABLE\n", __func__);
+ resp->cstate.slot->sl_inuse = 0;
+ }
+ if (resp->cstate.session)
+ nfsd4_put_session(resp->cstate.session);
+ }
return 1;
}
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff