#include <linux/nfs_idmap.h>
#include "nfs4_fs.h"
#include "internal.h"
+#include "pnfs.h"
#define NFSDBG_FACILITY NFSDBG_XDR
XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN) + 5)
#define encode_reclaim_complete_maxsz (op_encode_hdr_maxsz + 4)
#define decode_reclaim_complete_maxsz (op_decode_hdr_maxsz + 4)
+#define encode_getdeviceinfo_maxsz (op_encode_hdr_maxsz + 4 + \
+ XDR_QUADLEN(NFS4_DEVICEID4_SIZE))
+#define decode_getdeviceinfo_maxsz (op_decode_hdr_maxsz + \
+ 1 /* layout type */ + \
+ 1 /* opaque devaddr4 length */ + \
+ /* devaddr4 payload is read into page */ \
+ 1 /* notification bitmap length */ + \
+ 1 /* notification bitmap */)
+#define encode_layoutget_maxsz (op_encode_hdr_maxsz + 10 + \
+ encode_stateid_maxsz)
+#define decode_layoutget_maxsz (op_decode_hdr_maxsz + 8 + \
+ decode_stateid_maxsz + \
+ XDR_QUADLEN(PNFS_LAYOUT_MAXSIZE))
#else /* CONFIG_NFS_V4_1 */
#define encode_sequence_maxsz 0
#define decode_sequence_maxsz 0
#define NFS4_dec_reclaim_complete_sz (compound_decode_hdr_maxsz + \
decode_sequence_maxsz + \
decode_reclaim_complete_maxsz)
+#define NFS4_enc_getdeviceinfo_sz (compound_encode_hdr_maxsz + \
+ encode_sequence_maxsz +\
+ encode_getdeviceinfo_maxsz)
+#define NFS4_dec_getdeviceinfo_sz (compound_decode_hdr_maxsz + \
+ decode_sequence_maxsz + \
+ decode_getdeviceinfo_maxsz)
+#define NFS4_enc_layoutget_sz (compound_encode_hdr_maxsz + \
+ encode_sequence_maxsz + \
+ encode_putfh_maxsz + \
+ encode_layoutget_maxsz)
+#define NFS4_dec_layoutget_sz (compound_decode_hdr_maxsz + \
+ decode_sequence_maxsz + \
+ decode_putfh_maxsz + \
+ decode_layoutget_maxsz)
const u32 nfs41_maxwrite_overhead = ((RPC_MAX_HEADER_WITH_AUTH +
compound_encode_hdr_maxsz +
if (iap->ia_valid & ATTR_MODE)
len += 4;
if (iap->ia_valid & ATTR_UID) {
- owner_namelen = nfs_map_uid_to_name(server->nfs_client, iap->ia_uid, owner_name);
+ owner_namelen = nfs_map_uid_to_name(server->nfs_client, iap->ia_uid, owner_name, IDMAP_NAMESZ);
if (owner_namelen < 0) {
dprintk("nfs: couldn't resolve uid %d to string\n",
iap->ia_uid);
len += 4 + (XDR_QUADLEN(owner_namelen) << 2);
}
if (iap->ia_valid & ATTR_GID) {
- owner_grouplen = nfs_map_gid_to_group(server->nfs_client, iap->ia_gid, owner_group);
+ owner_grouplen = nfs_map_gid_to_group(server->nfs_client, iap->ia_gid, owner_group, IDMAP_NAMESZ);
if (owner_grouplen < 0) {
dprintk("nfs: couldn't resolve gid %d to string\n",
iap->ia_gid);
static void encode_readdir(struct xdr_stream *xdr, const struct nfs4_readdir_arg *readdir, struct rpc_rqst *req, struct compound_hdr *hdr)
{
- uint32_t attrs[2] = {
- FATTR4_WORD0_RDATTR_ERROR|FATTR4_WORD0_FILEID,
- FATTR4_WORD1_MOUNTED_ON_FILEID,
- };
+ uint32_t attrs[2] = {0, 0};
+ uint32_t dircount = readdir->count >> 1;
__be32 *p;
+ if (readdir->plus) {
+ attrs[0] |= FATTR4_WORD0_TYPE|FATTR4_WORD0_CHANGE|FATTR4_WORD0_SIZE|
+ FATTR4_WORD0_FSID|FATTR4_WORD0_FILEHANDLE;
+ attrs[1] |= FATTR4_WORD1_MODE|FATTR4_WORD1_NUMLINKS|FATTR4_WORD1_OWNER|
+ FATTR4_WORD1_OWNER_GROUP|FATTR4_WORD1_RAWDEV|
+ FATTR4_WORD1_SPACE_USED|FATTR4_WORD1_TIME_ACCESS|
+ FATTR4_WORD1_TIME_METADATA|FATTR4_WORD1_TIME_MODIFY;
+ dircount >>= 1;
+ }
+ attrs[0] |= FATTR4_WORD0_RDATTR_ERROR|FATTR4_WORD0_FILEID;
+ attrs[1] |= FATTR4_WORD1_MOUNTED_ON_FILEID;
+ /* Switch to mounted_on_fileid if the server supports it */
+ if (readdir->bitmask[1] & FATTR4_WORD1_MOUNTED_ON_FILEID)
+ attrs[0] &= ~FATTR4_WORD0_FILEID;
+ else
+ attrs[1] &= ~FATTR4_WORD1_MOUNTED_ON_FILEID;
+
p = reserve_space(xdr, 12+NFS4_VERIFIER_SIZE+20);
*p++ = cpu_to_be32(OP_READDIR);
p = xdr_encode_hyper(p, readdir->cookie);
p = xdr_encode_opaque_fixed(p, readdir->verifier.data, NFS4_VERIFIER_SIZE);
- *p++ = cpu_to_be32(readdir->count >> 1); /* We're not doing readdirplus */
+ *p++ = cpu_to_be32(dircount);
*p++ = cpu_to_be32(readdir->count);
*p++ = cpu_to_be32(2);
- /* Switch to mounted_on_fileid if the server supports it */
- if (readdir->bitmask[1] & FATTR4_WORD1_MOUNTED_ON_FILEID)
- attrs[0] &= ~FATTR4_WORD0_FILEID;
- else
- attrs[1] &= ~FATTR4_WORD1_MOUNTED_ON_FILEID;
+
*p++ = cpu_to_be32(attrs[0] & readdir->bitmask[0]);
*p = cpu_to_be32(attrs[1] & readdir->bitmask[1]);
hdr->nops++;
#endif /* CONFIG_NFS_V4_1 */
}
+#ifdef CONFIG_NFS_V4_1
+static void
+encode_getdeviceinfo(struct xdr_stream *xdr,
+ const struct nfs4_getdeviceinfo_args *args,
+ struct compound_hdr *hdr)
+{
+ __be32 *p;
+
+ p = reserve_space(xdr, 16 + NFS4_DEVICEID4_SIZE);
+ *p++ = cpu_to_be32(OP_GETDEVICEINFO);
+ p = xdr_encode_opaque_fixed(p, args->pdev->dev_id.data,
+ NFS4_DEVICEID4_SIZE);
+ *p++ = cpu_to_be32(args->pdev->layout_type);
+ *p++ = cpu_to_be32(args->pdev->pglen); /* gdia_maxcount */
+ *p++ = cpu_to_be32(0); /* bitmap length 0 */
+ hdr->nops++;
+ hdr->replen += decode_getdeviceinfo_maxsz;
+}
+
+static void
+encode_layoutget(struct xdr_stream *xdr,
+ const struct nfs4_layoutget_args *args,
+ struct compound_hdr *hdr)
+{
+ nfs4_stateid stateid;
+ __be32 *p;
+
+ p = reserve_space(xdr, 44 + NFS4_STATEID_SIZE);
+ *p++ = cpu_to_be32(OP_LAYOUTGET);
+ *p++ = cpu_to_be32(0); /* Signal layout available */
+ *p++ = cpu_to_be32(args->type);
+ *p++ = cpu_to_be32(args->range.iomode);
+ p = xdr_encode_hyper(p, args->range.offset);
+ p = xdr_encode_hyper(p, args->range.length);
+ p = xdr_encode_hyper(p, args->minlength);
+ pnfs_get_layout_stateid(&stateid, NFS_I(args->inode)->layout,
+ args->ctx->state);
+ p = xdr_encode_opaque_fixed(p, &stateid.data, NFS4_STATEID_SIZE);
+ *p = cpu_to_be32(args->maxcount);
+
+ dprintk("%s: 1st type:0x%x iomode:%d off:%lu len:%lu mc:%d\n",
+ __func__,
+ args->type,
+ args->range.iomode,
+ (unsigned long)args->range.offset,
+ (unsigned long)args->range.length,
+ args->maxcount);
+ hdr->nops++;
+ hdr->replen += decode_layoutget_maxsz;
+}
+#endif /* CONFIG_NFS_V4_1 */
+
/*
* END OF "GENERIC" ENCODE ROUTINES.
*/
/*
* Encode RENAME request
*/
-static int nfs4_xdr_enc_rename(struct rpc_rqst *req, __be32 *p, const struct nfs4_rename_arg *args)
+static int nfs4_xdr_enc_rename(struct rpc_rqst *req, __be32 *p, const struct nfs_renameargs *args)
{
struct xdr_stream xdr;
struct compound_hdr hdr = {
return 0;
}
+/*
+ * Encode GETDEVICEINFO request
+ */
+static int nfs4_xdr_enc_getdeviceinfo(struct rpc_rqst *req, uint32_t *p,
+ struct nfs4_getdeviceinfo_args *args)
+{
+ struct xdr_stream xdr;
+ struct compound_hdr hdr = {
+ .minorversion = nfs4_xdr_minorversion(&args->seq_args),
+ };
+
+ xdr_init_encode(&xdr, &req->rq_snd_buf, p);
+ encode_compound_hdr(&xdr, req, &hdr);
+ encode_sequence(&xdr, &args->seq_args, &hdr);
+ encode_getdeviceinfo(&xdr, args, &hdr);
+
+ /* set up reply kvec. Subtract notification bitmap max size (2)
+ * so that notification bitmap is put in xdr_buf tail */
+ xdr_inline_pages(&req->rq_rcv_buf, (hdr.replen - 2) << 2,
+ args->pdev->pages, args->pdev->pgbase,
+ args->pdev->pglen);
+
+ encode_nops(&hdr);
+ return 0;
+}
+
+/*
+ * Encode LAYOUTGET request
+ */
+static int nfs4_xdr_enc_layoutget(struct rpc_rqst *req, uint32_t *p,
+ struct nfs4_layoutget_args *args)
+{
+ struct xdr_stream xdr;
+ struct compound_hdr hdr = {
+ .minorversion = nfs4_xdr_minorversion(&args->seq_args),
+ };
+
+ xdr_init_encode(&xdr, &req->rq_snd_buf, p);
+ encode_compound_hdr(&xdr, req, &hdr);
+ encode_sequence(&xdr, &args->seq_args, &hdr);
+ encode_putfh(&xdr, NFS_FH(args->inode), &hdr);
+ encode_layoutget(&xdr, args, &hdr);
+ encode_nops(&hdr);
+ return 0;
+}
#endif /* CONFIG_NFS_V4_1 */
static void print_overflow_msg(const char *func, const struct xdr_stream *xdr)
static int decode_attr_supported(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *bitmask)
{
if (likely(bitmap[0] & FATTR4_WORD0_SUPPORTED_ATTRS)) {
- decode_attr_bitmap(xdr, bitmask);
+ int ret;
+ ret = decode_attr_bitmap(xdr, bitmask);
+ if (unlikely(ret < 0))
+ return ret;
bitmap[0] &= ~FATTR4_WORD0_SUPPORTED_ATTRS;
} else
bitmask[0] = bitmask[1] = 0;
return -EIO;
}
+static int decode_attr_error(struct xdr_stream *xdr, uint32_t *bitmap)
+{
+ __be32 *p;
+
+ if (unlikely(bitmap[0] & (FATTR4_WORD0_RDATTR_ERROR - 1U)))
+ return -EIO;
+ if (likely(bitmap[0] & FATTR4_WORD0_RDATTR_ERROR)) {
+ p = xdr_inline_decode(xdr, 4);
+ if (unlikely(!p))
+ goto out_overflow;
+ bitmap[0] &= ~FATTR4_WORD0_RDATTR_ERROR;
+ }
+ return 0;
+out_overflow:
+ print_overflow_msg(__func__, xdr);
+ return -EIO;
+}
+
+static int decode_attr_filehandle(struct xdr_stream *xdr, uint32_t *bitmap, struct nfs_fh *fh)
+{
+ __be32 *p;
+ int len;
+
+ if (fh != NULL)
+ memset(fh, 0, sizeof(*fh));
+
+ if (unlikely(bitmap[0] & (FATTR4_WORD0_FILEHANDLE - 1U)))
+ return -EIO;
+ if (likely(bitmap[0] & FATTR4_WORD0_FILEHANDLE)) {
+ p = xdr_inline_decode(xdr, 4);
+ if (unlikely(!p))
+ goto out_overflow;
+ len = be32_to_cpup(p);
+ if (len > NFS4_FHSIZE)
+ return -EIO;
+ p = xdr_inline_decode(xdr, len);
+ if (unlikely(!p))
+ goto out_overflow;
+ if (fh != NULL) {
+ memcpy(fh->data, p, len);
+ fh->size = len;
+ }
+ bitmap[0] &= ~FATTR4_WORD0_FILEHANDLE;
+ }
+ return 0;
+out_overflow:
+ print_overflow_msg(__func__, xdr);
+ return -EIO;
+}
+
static int decode_attr_aclsupport(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
{
__be32 *p;
return status;
}
+static int decode_attr_time_delta(struct xdr_stream *xdr, uint32_t *bitmap,
+ struct timespec *time)
+{
+ int status = 0;
+
+ time->tv_sec = 0;
+ time->tv_nsec = 0;
+ if (unlikely(bitmap[1] & (FATTR4_WORD1_TIME_DELTA - 1U)))
+ return -EIO;
+ if (likely(bitmap[1] & FATTR4_WORD1_TIME_DELTA)) {
+ status = decode_attr_time(xdr, time);
+ bitmap[1] &= ~FATTR4_WORD1_TIME_DELTA;
+ }
+ dprintk("%s: time_delta=%ld %ld\n", __func__, (long)time->tv_sec,
+ (long)time->tv_nsec);
+ return status;
+}
+
static int decode_attr_time_modify(struct xdr_stream *xdr, uint32_t *bitmap, struct timespec *time)
{
int status = 0;
return status;
}
-static int decode_getfattr(struct xdr_stream *xdr, struct nfs_fattr *fattr,
+static int decode_getfattr_attrs(struct xdr_stream *xdr, uint32_t *bitmap,
+ struct nfs_fattr *fattr, struct nfs_fh *fh,
const struct nfs_server *server, int may_sleep)
{
- __be32 *savep;
- uint32_t attrlen,
- bitmap[2] = {0},
- type;
int status;
umode_t fmode = 0;
uint64_t fileid;
-
- status = decode_op_hdr(xdr, OP_GETATTR);
- if (status < 0)
- goto xdr_error;
-
- status = decode_attr_bitmap(xdr, bitmap);
- if (status < 0)
- goto xdr_error;
-
- status = decode_attr_length(xdr, &attrlen, &savep);
- if (status < 0)
- goto xdr_error;
-
+ uint32_t type;
status = decode_attr_type(xdr, bitmap, &type);
if (status < 0)
goto xdr_error;
fattr->valid |= status;
+ status = decode_attr_error(xdr, bitmap);
+ if (status < 0)
+ goto xdr_error;
+
+ status = decode_attr_filehandle(xdr, bitmap, fh);
+ if (status < 0)
+ goto xdr_error;
+
status = decode_attr_fileid(xdr, bitmap, &fattr->fileid);
if (status < 0)
goto xdr_error;
fattr->valid |= status;
}
+xdr_error:
+ dprintk("%s: xdr returned %d\n", __func__, -status);
+ return status;
+}
+
+static int decode_getfattr_generic(struct xdr_stream *xdr, struct nfs_fattr *fattr,
+ struct nfs_fh *fh, const struct nfs_server *server, int may_sleep)
+{
+ __be32 *savep;
+ uint32_t attrlen,
+ bitmap[2] = {0};
+ int status;
+
+ status = decode_op_hdr(xdr, OP_GETATTR);
+ if (status < 0)
+ goto xdr_error;
+
+ status = decode_attr_bitmap(xdr, bitmap);
+ if (status < 0)
+ goto xdr_error;
+
+ status = decode_attr_length(xdr, &attrlen, &savep);
+ if (status < 0)
+ goto xdr_error;
+
+ status = decode_getfattr_attrs(xdr, bitmap, fattr, fh, server, may_sleep);
+ if (status < 0)
+ goto xdr_error;
+
status = verify_attr_len(xdr, savep, attrlen);
xdr_error:
dprintk("%s: xdr returned %d\n", __func__, -status);
return status;
}
+static int decode_getfattr(struct xdr_stream *xdr, struct nfs_fattr *fattr,
+ const struct nfs_server *server, int may_sleep)
+{
+ return decode_getfattr_generic(xdr, fattr, NULL, server, may_sleep);
+}
+
+/*
+ * Decode potentially multiple layout types. Currently we only support
+ * one layout driver per file system.
+ */
+static int decode_first_pnfs_layout_type(struct xdr_stream *xdr,
+ uint32_t *layouttype)
+{
+ uint32_t *p;
+ int num;
+
+ p = xdr_inline_decode(xdr, 4);
+ if (unlikely(!p))
+ goto out_overflow;
+ num = be32_to_cpup(p);
+
+ /* pNFS is not supported by the underlying file system */
+ if (num == 0) {
+ *layouttype = 0;
+ return 0;
+ }
+ if (num > 1)
+ printk(KERN_INFO "%s: Warning: Multiple pNFS layout drivers "
+ "per filesystem not supported\n", __func__);
+
+ /* Decode and set first layout type, move xdr->p past unused types */
+ p = xdr_inline_decode(xdr, num * 4);
+ if (unlikely(!p))
+ goto out_overflow;
+ *layouttype = be32_to_cpup(p);
+ return 0;
+out_overflow:
+ print_overflow_msg(__func__, xdr);
+ return -EIO;
+}
+
+/*
+ * The type of file system exported.
+ * Note we must ensure that layouttype is set in any non-error case.
+ */
+static int decode_attr_pnfstype(struct xdr_stream *xdr, uint32_t *bitmap,
+ uint32_t *layouttype)
+{
+ int status = 0;
+
+ dprintk("%s: bitmap is %x\n", __func__, bitmap[1]);
+ if (unlikely(bitmap[1] & (FATTR4_WORD1_FS_LAYOUT_TYPES - 1U)))
+ return -EIO;
+ if (bitmap[1] & FATTR4_WORD1_FS_LAYOUT_TYPES) {
+ status = decode_first_pnfs_layout_type(xdr, layouttype);
+ bitmap[1] &= ~FATTR4_WORD1_FS_LAYOUT_TYPES;
+ } else
+ *layouttype = 0;
+ return status;
+}
static int decode_fsinfo(struct xdr_stream *xdr, struct nfs_fsinfo *fsinfo)
{
if ((status = decode_attr_maxwrite(xdr, bitmap, &fsinfo->wtmax)) != 0)
goto xdr_error;
fsinfo->wtpref = fsinfo->wtmax;
+ status = decode_attr_time_delta(xdr, bitmap, &fsinfo->time_delta);
+ if (status != 0)
+ goto xdr_error;
+ status = decode_attr_pnfstype(xdr, bitmap, &fsinfo->layouttype);
+ if (status != 0)
+ goto xdr_error;
status = verify_attr_len(xdr, savep, attrlen);
xdr_error:
__be32 *p;
uint32_t namelen, type;
- p = xdr_inline_decode(xdr, 32);
+ p = xdr_inline_decode(xdr, 32); /* read 32 bytes */
if (unlikely(!p))
goto out_overflow;
- p = xdr_decode_hyper(p, &offset);
+ p = xdr_decode_hyper(p, &offset); /* read 2 8-byte long words */
p = xdr_decode_hyper(p, &length);
- type = be32_to_cpup(p++);
- if (fl != NULL) {
+ type = be32_to_cpup(p++); /* 4 byte read */
+ if (fl != NULL) { /* manipulate file lock */
fl->fl_start = (loff_t)offset;
fl->fl_end = fl->fl_start + (loff_t)length - 1;
if (length == ~(uint64_t)0)
fl->fl_type = F_RDLCK;
fl->fl_pid = 0;
}
- p = xdr_decode_hyper(p, &clientid);
- namelen = be32_to_cpup(p);
- p = xdr_inline_decode(xdr, namelen);
+ p = xdr_decode_hyper(p, &clientid); /* read 8 bytes */
+ namelen = be32_to_cpup(p); /* read 4 bytes */ /* have read all 32 bytes now */
+ p = xdr_inline_decode(xdr, namelen); /* variable size field */
if (likely(p))
return -NFS4ERR_DENIED;
out_overflow:
static int decode_readdir(struct xdr_stream *xdr, struct rpc_rqst *req, struct nfs4_readdir_res *readdir)
{
struct xdr_buf *rcvbuf = &req->rq_rcv_buf;
- struct page *page = *rcvbuf->pages;
struct kvec *iov = rcvbuf->head;
size_t hdrlen;
u32 recvd, pglen = rcvbuf->page_len;
- __be32 *end, *entry, *p, *kaddr;
- unsigned int nr = 0;
int status;
status = decode_op_hdr(xdr, OP_READDIR);
pglen = recvd;
xdr_read_pages(xdr, pglen);
- BUG_ON(pglen + readdir->pgbase > PAGE_CACHE_SIZE);
- kaddr = p = kmap_atomic(page, KM_USER0);
- end = p + ((pglen + readdir->pgbase) >> 2);
- entry = p;
-
- /* Make sure the packet actually has a value_follows and EOF entry */
- if ((entry + 1) > end)
- goto short_pkt;
-
- for (; *p++; nr++) {
- u32 len, attrlen, xlen;
- if (end - p < 3)
- goto short_pkt;
- dprintk("cookie = %Lu, ", *((unsigned long long *)p));
- p += 2; /* cookie */
- len = ntohl(*p++); /* filename length */
- if (len > NFS4_MAXNAMLEN) {
- dprintk("NFS: giant filename in readdir (len 0x%x)\n",
- len);
- goto err_unmap;
- }
- xlen = XDR_QUADLEN(len);
- if (end - p < xlen + 1)
- goto short_pkt;
- dprintk("filename = %*s\n", len, (char *)p);
- p += xlen;
- len = ntohl(*p++); /* bitmap length */
- if (end - p < len + 1)
- goto short_pkt;
- p += len;
- attrlen = XDR_QUADLEN(ntohl(*p++));
- if (end - p < attrlen + 2)
- goto short_pkt;
- p += attrlen; /* attributes */
- entry = p;
- }
- /*
- * Apparently some server sends responses that are a valid size, but
- * contain no entries, and have value_follows==0 and EOF==0. For
- * those, just set the EOF marker.
- */
- if (!nr && entry[1] == 0) {
- dprintk("NFS: readdir reply truncated!\n");
- entry[1] = 1;
- }
-out:
- kunmap_atomic(kaddr, KM_USER0);
- return 0;
-short_pkt:
- /*
- * When we get a short packet there are 2 possibilities. We can
- * return an error, or fix up the response to look like a valid
- * response and return what we have so far. If there are no
- * entries and the packet was short, then return -EIO. If there
- * are valid entries in the response, return them and pretend that
- * the call was successful, but incomplete. The caller can retry the
- * readdir starting at the last cookie.
- */
- dprintk("%s: short packet at entry %d\n", __func__, nr);
- entry[0] = entry[1] = 0;
- if (nr)
- goto out;
-err_unmap:
- kunmap_atomic(kaddr, KM_USER0);
- return -errno_NFSERR_IO;
+
+ return pglen;
}
static int decode_readlink(struct xdr_stream *xdr, struct rpc_rqst *req)
size_t hdrlen;
u32 len, recvd;
__be32 *p;
- char *kaddr;
int status;
status = decode_op_hdr(xdr, OP_READLINK);
* and and null-terminate the text (the VFS expects
* null-termination).
*/
- kaddr = (char *)kmap_atomic(rcvbuf->pages[0], KM_USER0);
- kaddr[len+rcvbuf->page_base] = '\0';
- kunmap_atomic(kaddr, KM_USER0);
+ xdr_terminate_string(rcvbuf, len);
return 0;
out_overflow:
print_overflow_msg(__func__, xdr);
struct rpc_rqst *rqstp)
{
#if defined(CONFIG_NFS_V4_1)
- struct nfs4_slot *slot;
struct nfs4_sessionid id;
u32 dummy;
int status;
goto out_overflow;
/* seqid */
- slot = &res->sr_session->fc_slot_table.slots[res->sr_slotid];
dummy = be32_to_cpup(p++);
- if (dummy != slot->seq_nr) {
+ if (dummy != res->sr_slot->seq_nr) {
dprintk("%s Invalid sequence number\n", __func__);
goto out_err;
}
/* slot id */
dummy = be32_to_cpup(p++);
- if (dummy != res->sr_slotid) {
+ if (dummy != res->sr_slot - res->sr_session->fc_slot_table.slots) {
dprintk("%s Invalid slot id\n", __func__);
goto out_err;
}
#endif /* CONFIG_NFS_V4_1 */
}
+#if defined(CONFIG_NFS_V4_1)
+
+static int decode_getdeviceinfo(struct xdr_stream *xdr,
+ struct pnfs_device *pdev)
+{
+ __be32 *p;
+ uint32_t len, type;
+ int status;
+
+ status = decode_op_hdr(xdr, OP_GETDEVICEINFO);
+ if (status) {
+ if (status == -ETOOSMALL) {
+ p = xdr_inline_decode(xdr, 4);
+ if (unlikely(!p))
+ goto out_overflow;
+ pdev->mincount = be32_to_cpup(p);
+ dprintk("%s: Min count too small. mincnt = %u\n",
+ __func__, pdev->mincount);
+ }
+ return status;
+ }
+
+ p = xdr_inline_decode(xdr, 8);
+ if (unlikely(!p))
+ goto out_overflow;
+ type = be32_to_cpup(p++);
+ if (type != pdev->layout_type) {
+ dprintk("%s: layout mismatch req: %u pdev: %u\n",
+ __func__, pdev->layout_type, type);
+ return -EINVAL;
+ }
+ /*
+ * Get the length of the opaque device_addr4. xdr_read_pages places
+ * the opaque device_addr4 in the xdr_buf->pages (pnfs_device->pages)
+ * and places the remaining xdr data in xdr_buf->tail
+ */
+ pdev->mincount = be32_to_cpup(p);
+ xdr_read_pages(xdr, pdev->mincount); /* include space for the length */
+
+ /* Parse notification bitmap, verifying that it is zero. */
+ p = xdr_inline_decode(xdr, 4);
+ if (unlikely(!p))
+ goto out_overflow;
+ len = be32_to_cpup(p);
+ if (len) {
+ int i;
+
+ p = xdr_inline_decode(xdr, 4 * len);
+ if (unlikely(!p))
+ goto out_overflow;
+ for (i = 0; i < len; i++, p++) {
+ if (be32_to_cpup(p)) {
+ dprintk("%s: notifications not supported\n",
+ __func__);
+ return -EIO;
+ }
+ }
+ }
+ return 0;
+out_overflow:
+ print_overflow_msg(__func__, xdr);
+ return -EIO;
+}
+
+static int decode_layoutget(struct xdr_stream *xdr, struct rpc_rqst *req,
+ struct nfs4_layoutget_res *res)
+{
+ __be32 *p;
+ int status;
+ u32 layout_count;
+
+ status = decode_op_hdr(xdr, OP_LAYOUTGET);
+ if (status)
+ return status;
+ p = xdr_inline_decode(xdr, 8 + NFS4_STATEID_SIZE);
+ if (unlikely(!p))
+ goto out_overflow;
+ res->return_on_close = be32_to_cpup(p++);
+ p = xdr_decode_opaque_fixed(p, res->stateid.data, NFS4_STATEID_SIZE);
+ layout_count = be32_to_cpup(p);
+ if (!layout_count) {
+ dprintk("%s: server responded with empty layout array\n",
+ __func__);
+ return -EINVAL;
+ }
+
+ p = xdr_inline_decode(xdr, 24);
+ if (unlikely(!p))
+ goto out_overflow;
+ p = xdr_decode_hyper(p, &res->range.offset);
+ p = xdr_decode_hyper(p, &res->range.length);
+ res->range.iomode = be32_to_cpup(p++);
+ res->type = be32_to_cpup(p++);
+
+ status = decode_opaque_inline(xdr, &res->layout.len, (char **)&p);
+ if (unlikely(status))
+ return status;
+
+ dprintk("%s roff:%lu rlen:%lu riomode:%d, lo_type:0x%x, lo.len:%d\n",
+ __func__,
+ (unsigned long)res->range.offset,
+ (unsigned long)res->range.length,
+ res->range.iomode,
+ res->type,
+ res->layout.len);
+
+ /* nfs4_proc_layoutget allocated a single page */
+ if (res->layout.len > PAGE_SIZE)
+ return -ENOMEM;
+ memcpy(res->layout.buf, p, res->layout.len);
+
+ if (layout_count > 1) {
+ /* We only handle a length one array at the moment. Any
+ * further entries are just ignored. Note that this means
+ * the client may see a response that is less than the
+ * minimum it requested.
+ */
+ dprintk("%s: server responded with %d layouts, dropping tail\n",
+ __func__, layout_count);
+ }
+
+ return 0;
+out_overflow:
+ print_overflow_msg(__func__, xdr);
+ return -EIO;
+}
+#endif /* CONFIG_NFS_V4_1 */
+
/*
* END OF "GENERIC" DECODE ROUTINES.
*/
/*
* Decode RENAME response
*/
-static int nfs4_xdr_dec_rename(struct rpc_rqst *rqstp, __be32 *p, struct nfs4_rename_res *res)
+static int nfs4_xdr_dec_rename(struct rpc_rqst *rqstp, __be32 *p, struct nfs_renameres *res)
{
struct xdr_stream xdr;
struct compound_hdr hdr;
status = decode_reclaim_complete(&xdr, (void *)NULL);
return status;
}
+
+/*
+ * Decode GETDEVINFO response
+ */
+static int nfs4_xdr_dec_getdeviceinfo(struct rpc_rqst *rqstp, uint32_t *p,
+ struct nfs4_getdeviceinfo_res *res)
+{
+ struct xdr_stream xdr;
+ struct compound_hdr hdr;
+ int status;
+
+ xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
+ status = decode_compound_hdr(&xdr, &hdr);
+ if (status != 0)
+ goto out;
+ status = decode_sequence(&xdr, &res->seq_res, rqstp);
+ if (status != 0)
+ goto out;
+ status = decode_getdeviceinfo(&xdr, res->pdev);
+out:
+ return status;
+}
+
+/*
+ * Decode LAYOUTGET response
+ */
+static int nfs4_xdr_dec_layoutget(struct rpc_rqst *rqstp, uint32_t *p,
+ struct nfs4_layoutget_res *res)
+{
+ struct xdr_stream xdr;
+ struct compound_hdr hdr;
+ int status;
+
+ xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
+ status = decode_compound_hdr(&xdr, &hdr);
+ if (status)
+ goto out;
+ status = decode_sequence(&xdr, &res->seq_res, rqstp);
+ if (status)
+ goto out;
+ status = decode_putfh(&xdr);
+ if (status)
+ goto out;
+ status = decode_layoutget(&xdr, rqstp, res);
+out:
+ return status;
+}
#endif /* CONFIG_NFS_V4_1 */
-__be32 *nfs4_decode_dirent(__be32 *p, struct nfs_entry *entry, int plus)
+__be32 *nfs4_decode_dirent(struct xdr_stream *xdr, struct nfs_entry *entry,
+ struct nfs_server *server, int plus)
{
uint32_t bitmap[2] = {0};
uint32_t len;
-
- if (!*p++) {
- if (!*p)
+ __be32 *p = xdr_inline_decode(xdr, 4);
+ if (unlikely(!p))
+ goto out_overflow;
+ if (!ntohl(*p++)) {
+ p = xdr_inline_decode(xdr, 4);
+ if (unlikely(!p))
+ goto out_overflow;
+ if (!ntohl(*p++))
return ERR_PTR(-EAGAIN);
entry->eof = 1;
return ERR_PTR(-EBADCOOKIE);
}
+ p = xdr_inline_decode(xdr, 12);
+ if (unlikely(!p))
+ goto out_overflow;
entry->prev_cookie = entry->cookie;
p = xdr_decode_hyper(p, &entry->cookie);
entry->len = ntohl(*p++);
+
+ p = xdr_inline_decode(xdr, entry->len);
+ if (unlikely(!p))
+ goto out_overflow;
entry->name = (const char *) p;
- p += XDR_QUADLEN(entry->len);
/*
* In case the server doesn't return an inode number,
* since glibc seems to choke on it...)
*/
entry->ino = 1;
+ entry->fattr->valid = 0;
- len = ntohl(*p++); /* bitmap length */
- if (len-- > 0) {
- bitmap[0] = ntohl(*p++);
- if (len-- > 0) {
- bitmap[1] = ntohl(*p++);
- p += len;
- }
- }
- len = XDR_QUADLEN(ntohl(*p++)); /* attribute buffer length */
- if (len > 0) {
- if (bitmap[0] & FATTR4_WORD0_RDATTR_ERROR) {
- bitmap[0] &= ~FATTR4_WORD0_RDATTR_ERROR;
- /* Ignore the return value of rdattr_error for now */
- p++;
- len--;
- }
- if (bitmap[0] == 0 && bitmap[1] == FATTR4_WORD1_MOUNTED_ON_FILEID)
- xdr_decode_hyper(p, &entry->ino);
- else if (bitmap[0] == FATTR4_WORD0_FILEID)
- xdr_decode_hyper(p, &entry->ino);
- p += len;
- }
+ if (decode_attr_bitmap(xdr, bitmap) < 0)
+ goto out_overflow;
+
+ if (decode_attr_length(xdr, &len, &p) < 0)
+ goto out_overflow;
+
+ if (decode_getfattr_attrs(xdr, bitmap, entry->fattr, entry->fh, server, 1) < 0)
+ goto out_overflow;
+ if (entry->fattr->valid & NFS_ATTR_FATTR_FILEID)
+ entry->ino = entry->fattr->fileid;
+
+ entry->d_type = DT_UNKNOWN;
+ if (entry->fattr->valid & NFS_ATTR_FATTR_TYPE)
+ entry->d_type = nfs_umode_to_dtype(entry->fattr->mode);
+
+ if (verify_attr_len(xdr, p, len) < 0)
+ goto out_overflow;
+
+ p = xdr_inline_peek(xdr, 8);
+ if (p != NULL)
+ entry->eof = !p[0] && p[1];
+ else
+ entry->eof = 0;
- entry->eof = !p[0] && p[1];
return p;
+
+out_overflow:
+ print_overflow_msg(__func__, xdr);
+ return ERR_PTR(-EAGAIN);
}
/*
PROC(SEQUENCE, enc_sequence, dec_sequence),
PROC(GET_LEASE_TIME, enc_get_lease_time, dec_get_lease_time),
PROC(RECLAIM_COMPLETE, enc_reclaim_complete, dec_reclaim_complete),
+ PROC(GETDEVICEINFO, enc_getdeviceinfo, dec_getdeviceinfo),
+ PROC(LAYOUTGET, enc_layoutget, dec_layoutget),
#endif /* CONFIG_NFS_V4_1 */
};
projects / mv-sheeva.git / blobdiff