Linux-2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.
Let it rip!
diff --git a/fs/nfsd/nfs4xdr.c b/fs/nfsd/nfs4xdr.c
new file mode 100644
index 0000000..36a058a
--- /dev/null
+++ b/fs/nfsd/nfs4xdr.c
@@ -0,0 +1,2536 @@
+/*
+ * fs/nfs/nfs4xdr.c
+ *
+ * Server-side XDR for NFSv4
+ *
+ * Copyright (c) 2002 The Regents of the University of Michigan.
+ * All rights reserved.
+ *
+ * Kendrick Smith <kmsmith@umich.edu>
+ * Andy Adamson <andros@umich.edu>
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of the University nor the names of its
+ * contributors may be used to endorse or promote products derived
+ * from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+ * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * TODO: Neil Brown made the following observation: We currently
+ * initially reserve NFSD_BUFSIZE space on the transmit queue and
+ * never release any of that until the request is complete.
+ * It would be good to calculate a new maximum response size while
+ * decoding the COMPOUND, and call svc_reserve with this number
+ * at the end of nfs4svc_decode_compoundargs.
+ */
+
+#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/sunrpc/xdr.h>
+#include <linux/sunrpc/svc.h>
+#include <linux/sunrpc/clnt.h>
+#include <linux/nfsd/nfsd.h>
+#include <linux/nfsd/state.h>
+#include <linux/nfsd/xdr4.h>
+#include <linux/nfsd_idmap.h>
+#include <linux/nfs4.h>
+#include <linux/nfs4_acl.h>
+
+#define NFSDDBG_FACILITY NFSDDBG_XDR
+
+static int
+check_filename(char *str, int len, int err)
+{
+ int i;
+
+ if (len == 0)
+ return nfserr_inval;
+ if (isdotent(str, len))
+ return err;
+ for (i = 0; i < len; i++)
+ if (str[i] == '/')
+ return err;
+ return 0;
+}
+
+/*
+ * START OF "GENERIC" DECODE ROUTINES.
+ * These may look a little ugly since they are imported from a "generic"
+ * set of XDR encode/decode routines which are intended to be shared by
+ * all of our NFSv4 implementations (OpenBSD, MacOS X...).
+ *
+ * If the pain of reading these is too great, it should be a straightforward
+ * task to translate them into Linux-specific versions which are more
+ * consistent with the style used in NFSv2/v3...
+ */
+#define DECODE_HEAD \
+ u32 *p; \
+ int status
+#define DECODE_TAIL \
+ status = 0; \
+out: \
+ return status; \
+xdr_error: \
+ printk(KERN_NOTICE "xdr error! (%s:%d)\n", __FILE__, __LINE__); \
+ status = nfserr_bad_xdr; \
+ goto out
+
+#define READ32(x) (x) = ntohl(*p++)
+#define READ64(x) do { \
+ (x) = (u64)ntohl(*p++) << 32; \
+ (x) |= ntohl(*p++); \
+} while (0)
+#define READTIME(x) do { \
+ p++; \
+ (x) = ntohl(*p++); \
+ p++; \
+} while (0)
+#define READMEM(x,nbytes) do { \
+ x = (char *)p; \
+ p += XDR_QUADLEN(nbytes); \
+} while (0)
+#define SAVEMEM(x,nbytes) do { \
+ if (!(x = (p==argp->tmp || p == argp->tmpp) ? \
+ savemem(argp, p, nbytes) : \
+ (char *)p)) { \
+ printk(KERN_NOTICE "xdr error! (%s:%d)\n", __FILE__, __LINE__); \
+ goto xdr_error; \
+ } \
+ p += XDR_QUADLEN(nbytes); \
+} while (0)
+#define COPYMEM(x,nbytes) do { \
+ memcpy((x), p, nbytes); \
+ p += XDR_QUADLEN(nbytes); \
+} while (0)
+
+/* READ_BUF, read_buf(): nbytes must be <= PAGE_SIZE */
+#define READ_BUF(nbytes) do { \
+ if (nbytes <= (u32)((char *)argp->end - (char *)argp->p)) { \
+ 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__); \
+ goto xdr_error; \
+ } \
+} while (0)
+
+u32 *read_buf(struct nfsd4_compoundargs *argp, int 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;
+ if (avail + argp->pagelen < nbytes)
+ return NULL;
+ if (avail + PAGE_SIZE < nbytes) /* need more than a page !! */
+ return NULL;
+ /* ok, we can do it with the current plus the next page */
+ if (nbytes <= sizeof(argp->tmp))
+ p = argp->tmp;
+ else {
+ if (argp->tmpp)
+ kfree(argp->tmpp);
+ p = argp->tmpp = kmalloc(nbytes, GFP_KERNEL);
+ if (!p)
+ return NULL;
+
+ }
+ memcpy(p, argp->p, avail);
+ /* step to next page */
+ argp->p = page_address(argp->pagelist[0]);
+ argp->pagelist++;
+ if (argp->pagelen < PAGE_SIZE) {
+ argp->end = p + (argp->pagelen>>2);
+ argp->pagelen = 0;
+ } else {
+ argp->end = p + (PAGE_SIZE>>2);
+ argp->pagelen -= PAGE_SIZE;
+ }
+ memcpy(((char*)p)+avail, argp->p, (nbytes - avail));
+ argp->p += XDR_QUADLEN(nbytes - avail);
+ return p;
+}
+
+static int
+defer_free(struct nfsd4_compoundargs *argp,
+ void (*release)(const void *), void *p)
+{
+ struct tmpbuf *tb;
+
+ tb = kmalloc(sizeof(*tb), GFP_KERNEL);
+ if (!tb)
+ return -ENOMEM;
+ tb->buf = p;
+ tb->release = release;
+ tb->next = argp->to_free;
+ argp->to_free = tb;
+ return 0;
+}
+
+char *savemem(struct nfsd4_compoundargs *argp, u32 *p, int nbytes)
+{
+ void *new = NULL;
+ if (p == argp->tmp) {
+ new = kmalloc(nbytes, GFP_KERNEL);
+ if (!new) return NULL;
+ p = new;
+ memcpy(p, argp->tmp, nbytes);
+ } else {
+ if (p != argp->tmpp)
+ BUG();
+ argp->tmpp = NULL;
+ }
+ if (defer_free(argp, kfree, p)) {
+ kfree(new);
+ return NULL;
+ } else
+ return (char *)p;
+}
+
+
+static int
+nfsd4_decode_bitmap(struct nfsd4_compoundargs *argp, u32 *bmval)
+{
+ u32 bmlen;
+ DECODE_HEAD;
+
+ bmval[0] = 0;
+ bmval[1] = 0;
+
+ READ_BUF(4);
+ READ32(bmlen);
+ if (bmlen > 1000)
+ goto xdr_error;
+
+ READ_BUF(bmlen << 2);
+ if (bmlen > 0)
+ READ32(bmval[0]);
+ if (bmlen > 1)
+ READ32(bmval[1]);
+
+ DECODE_TAIL;
+}
+
+static int
+nfsd4_decode_fattr(struct nfsd4_compoundargs *argp, u32 *bmval, struct iattr *iattr,
+ struct nfs4_acl **acl)
+{
+ int expected_len, len = 0;
+ u32 dummy32;
+ char *buf;
+
+ DECODE_HEAD;
+ iattr->ia_valid = 0;
+ if ((status = nfsd4_decode_bitmap(argp, bmval)))
+ return status;
+
+ /*
+ * According to spec, unsupported attributes return ERR_NOTSUPP;
+ * read-only attributes return ERR_INVAL.
+ */
+ if ((bmval[0] & ~NFSD_SUPPORTED_ATTRS_WORD0) || (bmval[1] & ~NFSD_SUPPORTED_ATTRS_WORD1))
+ return nfserr_attrnotsupp;
+ if ((bmval[0] & ~NFSD_WRITEABLE_ATTRS_WORD0) || (bmval[1] & ~NFSD_WRITEABLE_ATTRS_WORD1))
+ return nfserr_inval;
+
+ READ_BUF(4);
+ READ32(expected_len);
+
+ if (bmval[0] & FATTR4_WORD0_SIZE) {
+ READ_BUF(8);
+ len += 8;
+ READ64(iattr->ia_size);
+ iattr->ia_valid |= ATTR_SIZE;
+ }
+ if (bmval[0] & FATTR4_WORD0_ACL) {
+ int nace, i;
+ struct nfs4_ace ace;
+
+ READ_BUF(4); len += 4;
+ READ32(nace);
+
+ *acl = nfs4_acl_new();
+ if (*acl == NULL) {
+ status = -ENOMEM;
+ goto out_nfserr;
+ }
+ defer_free(argp, (void (*)(const void *))nfs4_acl_free, *acl);
+
+ for (i = 0; i < nace; i++) {
+ READ_BUF(16); len += 16;
+ 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);
+ else
+ status = nfsd_map_name_to_uid(argp->rqstp,
+ buf, dummy32, &ace.who);
+ if (status)
+ goto out_nfserr;
+ if (nfs4_acl_add_ace(*acl, ace.type, ace.flag,
+ ace.access_mask, ace.whotype, ace.who) != 0) {
+ status = -ENOMEM;
+ goto out_nfserr;
+ }
+ }
+ } else
+ *acl = NULL;
+ if (bmval[1] & FATTR4_WORD1_MODE) {
+ READ_BUF(4);
+ len += 4;
+ READ32(iattr->ia_mode);
+ iattr->ia_mode &= (S_IFMT | S_IALLUGO);
+ iattr->ia_valid |= ATTR_MODE;
+ }
+ if (bmval[1] & FATTR4_WORD1_OWNER) {
+ READ_BUF(4);
+ len += 4;
+ READ32(dummy32);
+ 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)))
+ goto out_nfserr;
+ iattr->ia_valid |= ATTR_UID;
+ }
+ if (bmval[1] & FATTR4_WORD1_OWNER_GROUP) {
+ READ_BUF(4);
+ len += 4;
+ READ32(dummy32);
+ 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)))
+ goto out_nfserr;
+ iattr->ia_valid |= ATTR_GID;
+ }
+ if (bmval[1] & FATTR4_WORD1_TIME_ACCESS_SET) {
+ READ_BUF(4);
+ len += 4;
+ READ32(dummy32);
+ switch (dummy32) {
+ case NFS4_SET_TO_CLIENT_TIME:
+ /* We require the high 32 bits of 'seconds' to be 0, and we ignore
+ all 32 bits of 'nseconds'. */
+ READ_BUF(12);
+ len += 12;
+ READ32(dummy32);
+ if (dummy32)
+ return nfserr_inval;
+ READ32(iattr->ia_atime.tv_sec);
+ READ32(iattr->ia_atime.tv_nsec);
+ if (iattr->ia_atime.tv_nsec >= (u32)1000000000)
+ return nfserr_inval;
+ iattr->ia_valid |= (ATTR_ATIME | ATTR_ATIME_SET);
+ break;
+ case NFS4_SET_TO_SERVER_TIME:
+ iattr->ia_valid |= ATTR_ATIME;
+ break;
+ default:
+ 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;
+ READ32(dummy32);
+ switch (dummy32) {
+ case NFS4_SET_TO_CLIENT_TIME:
+ /* We require the high 32 bits of 'seconds' to be 0, and we ignore
+ all 32 bits of 'nseconds'. */
+ READ_BUF(12);
+ len += 12;
+ READ32(dummy32);
+ if (dummy32)
+ return nfserr_inval;
+ READ32(iattr->ia_mtime.tv_sec);
+ READ32(iattr->ia_mtime.tv_nsec);
+ if (iattr->ia_mtime.tv_nsec >= (u32)1000000000)
+ return nfserr_inval;
+ iattr->ia_valid |= (ATTR_MTIME | ATTR_MTIME_SET);
+ break;
+ case NFS4_SET_TO_SERVER_TIME:
+ iattr->ia_valid |= ATTR_MTIME;
+ break;
+ default:
+ goto xdr_error;
+ }
+ }
+ if (len != expected_len)
+ goto xdr_error;
+
+ DECODE_TAIL;
+
+out_nfserr:
+ status = nfserrno(status);
+ goto out;
+}
+
+static int
+nfsd4_decode_access(struct nfsd4_compoundargs *argp, struct nfsd4_access *access)
+{
+ DECODE_HEAD;
+
+ READ_BUF(4);
+ READ32(access->ac_req_access);
+
+ DECODE_TAIL;
+}
+
+static int
+nfsd4_decode_close(struct nfsd4_compoundargs *argp, struct nfsd4_close *close)
+{
+ DECODE_HEAD;
+
+ close->cl_stateowner = NULL;
+ READ_BUF(4 + sizeof(stateid_t));
+ READ32(close->cl_seqid);
+ READ32(close->cl_stateid.si_generation);
+ COPYMEM(&close->cl_stateid.si_opaque, sizeof(stateid_opaque_t));
+
+ DECODE_TAIL;
+}
+
+
+static int
+nfsd4_decode_commit(struct nfsd4_compoundargs *argp, struct nfsd4_commit *commit)
+{
+ DECODE_HEAD;
+
+ READ_BUF(12);
+ READ64(commit->co_offset);
+ READ32(commit->co_count);
+
+ DECODE_TAIL;
+}
+
+static int
+nfsd4_decode_create(struct nfsd4_compoundargs *argp, struct nfsd4_create *create)
+{
+ DECODE_HEAD;
+
+ READ_BUF(4);
+ READ32(create->cr_type);
+ switch (create->cr_type) {
+ case NF4LNK:
+ READ_BUF(4);
+ READ32(create->cr_linklen);
+ READ_BUF(create->cr_linklen);
+ SAVEMEM(create->cr_linkname, create->cr_linklen);
+ break;
+ case NF4BLK:
+ case NF4CHR:
+ READ_BUF(8);
+ READ32(create->cr_specdata1);
+ READ32(create->cr_specdata2);
+ break;
+ case NF4SOCK:
+ case NF4FIFO:
+ case NF4DIR:
+ default:
+ break;
+ }
+
+ READ_BUF(4);
+ READ32(create->cr_namelen);
+ READ_BUF(create->cr_namelen);
+ SAVEMEM(create->cr_name, create->cr_namelen);
+ 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)))
+ goto out;
+
+ DECODE_TAIL;
+}
+
+static inline int
+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;
+}
+
+static inline int
+nfsd4_decode_getattr(struct nfsd4_compoundargs *argp, struct nfsd4_getattr *getattr)
+{
+ return nfsd4_decode_bitmap(argp, getattr->ga_bmval);
+}
+
+static int
+nfsd4_decode_link(struct nfsd4_compoundargs *argp, struct nfsd4_link *link)
+{
+ DECODE_HEAD;
+
+ READ_BUF(4);
+ READ32(link->li_namelen);
+ READ_BUF(link->li_namelen);
+ SAVEMEM(link->li_name, link->li_namelen);
+ if ((status = check_filename(link->li_name, link->li_namelen, nfserr_inval)))
+ return status;
+
+ DECODE_TAIL;
+}
+
+static int
+nfsd4_decode_lock(struct nfsd4_compoundargs *argp, struct nfsd4_lock *lock)
+{
+ DECODE_HEAD;
+
+ lock->lk_stateowner = NULL;
+ /*
+ * type, reclaim(boolean), offset, length, new_lock_owner(boolean)
+ */
+ READ_BUF(28);
+ READ32(lock->lk_type);
+ if ((lock->lk_type < NFS4_READ_LT) || (lock->lk_type > NFS4_WRITEW_LT))
+ goto xdr_error;
+ READ32(lock->lk_reclaim);
+ READ64(lock->lk_offset);
+ READ64(lock->lk_length);
+ READ32(lock->lk_is_new);
+
+ if (lock->lk_is_new) {
+ READ_BUF(36);
+ 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));
+ 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));
+ READ32(lock->lk_old_lock_seqid);
+ }
+
+ DECODE_TAIL;
+}
+
+static int
+nfsd4_decode_lockt(struct nfsd4_compoundargs *argp, struct nfsd4_lockt *lockt)
+{
+ DECODE_HEAD;
+
+ READ_BUF(32);
+ READ32(lockt->lt_type);
+ if((lockt->lt_type < NFS4_READ_LT) || (lockt->lt_type > NFS4_WRITEW_LT))
+ goto xdr_error;
+ READ64(lockt->lt_offset);
+ READ64(lockt->lt_length);
+ COPYMEM(&lockt->lt_clientid, 8);
+ READ32(lockt->lt_owner.len);
+ READ_BUF(lockt->lt_owner.len);
+ READMEM(lockt->lt_owner.data, lockt->lt_owner.len);
+
+ DECODE_TAIL;
+}
+
+static int
+nfsd4_decode_locku(struct nfsd4_compoundargs *argp, struct nfsd4_locku *locku)
+{
+ DECODE_HEAD;
+
+ locku->lu_stateowner = NULL;
+ READ_BUF(24 + sizeof(stateid_t));
+ 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));
+ READ64(locku->lu_offset);
+ READ64(locku->lu_length);
+
+ DECODE_TAIL;
+}
+
+static int
+nfsd4_decode_lookup(struct nfsd4_compoundargs *argp, struct nfsd4_lookup *lookup)
+{
+ DECODE_HEAD;
+
+ READ_BUF(4);
+ READ32(lookup->lo_len);
+ READ_BUF(lookup->lo_len);
+ SAVEMEM(lookup->lo_name, lookup->lo_len);
+ if ((status = check_filename(lookup->lo_name, lookup->lo_len, nfserr_noent)))
+ return status;
+
+ DECODE_TAIL;
+}
+
+static int
+nfsd4_decode_open(struct nfsd4_compoundargs *argp, struct nfsd4_open *open)
+{
+ DECODE_HEAD;
+
+ memset(open->op_bmval, 0, sizeof(open->op_bmval));
+ open->op_iattr.ia_valid = 0;
+ open->op_stateowner = NULL;
+
+ /* seqid, share_access, share_deny, clientid, ownerlen */
+ READ_BUF(16 + sizeof(clientid_t));
+ READ32(open->op_seqid);
+ READ32(open->op_share_access);
+ READ32(open->op_share_deny);
+ COPYMEM(&open->op_clientid, sizeof(clientid_t));
+ READ32(open->op_owner.len);
+
+ /* owner, open_flag */
+ READ_BUF(open->op_owner.len + 4);
+ SAVEMEM(open->op_owner.data, open->op_owner.len);
+ READ32(open->op_create);
+ switch (open->op_create) {
+ case NFS4_OPEN_NOCREATE:
+ break;
+ case NFS4_OPEN_CREATE:
+ READ_BUF(4);
+ READ32(open->op_createmode);
+ 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)))
+ goto out;
+ break;
+ case NFS4_CREATE_EXCLUSIVE:
+ READ_BUF(8);
+ COPYMEM(open->op_verf.data, 8);
+ break;
+ default:
+ goto xdr_error;
+ }
+ break;
+ default:
+ goto xdr_error;
+ }
+
+ /* open_claim */
+ READ_BUF(4);
+ READ32(open->op_claim_type);
+ switch (open->op_claim_type) {
+ case NFS4_OPEN_CLAIM_NULL:
+ case NFS4_OPEN_CLAIM_DELEGATE_PREV:
+ READ_BUF(4);
+ READ32(open->op_fname.len);
+ READ_BUF(open->op_fname.len);
+ SAVEMEM(open->op_fname.data, open->op_fname.len);
+ if ((status = check_filename(open->op_fname.data, open->op_fname.len, nfserr_inval)))
+ return status;
+ break;
+ case NFS4_OPEN_CLAIM_PREVIOUS:
+ READ_BUF(4);
+ 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));
+ READ32(open->op_fname.len);
+ READ_BUF(open->op_fname.len);
+ SAVEMEM(open->op_fname.data, open->op_fname.len);
+ if ((status = check_filename(open->op_fname.data, open->op_fname.len, nfserr_inval)))
+ return status;
+ break;
+ default:
+ goto xdr_error;
+ }
+
+ DECODE_TAIL;
+}
+
+static int
+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));
+ READ32(open_conf->oc_seqid);
+
+ DECODE_TAIL;
+}
+
+static int
+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));
+ READ32(open_down->od_seqid);
+ READ32(open_down->od_share_access);
+ READ32(open_down->od_share_deny);
+
+ DECODE_TAIL;
+}
+
+static int
+nfsd4_decode_putfh(struct nfsd4_compoundargs *argp, struct nfsd4_putfh *putfh)
+{
+ DECODE_HEAD;
+
+ READ_BUF(4);
+ READ32(putfh->pf_fhlen);
+ if (putfh->pf_fhlen > NFS4_FHSIZE)
+ goto xdr_error;
+ READ_BUF(putfh->pf_fhlen);
+ SAVEMEM(putfh->pf_fhval, putfh->pf_fhlen);
+
+ DECODE_TAIL;
+}
+
+static int
+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));
+ READ64(read->rd_offset);
+ READ32(read->rd_length);
+
+ DECODE_TAIL;
+}
+
+static int
+nfsd4_decode_readdir(struct nfsd4_compoundargs *argp, struct nfsd4_readdir *readdir)
+{
+ DECODE_HEAD;
+
+ READ_BUF(24);
+ READ64(readdir->rd_cookie);
+ COPYMEM(readdir->rd_verf.data, sizeof(readdir->rd_verf.data));
+ READ32(readdir->rd_dircount); /* just in case you needed a useless field... */
+ READ32(readdir->rd_maxcount);
+ if ((status = nfsd4_decode_bitmap(argp, readdir->rd_bmval)))
+ goto out;
+
+ DECODE_TAIL;
+}
+
+static int
+nfsd4_decode_remove(struct nfsd4_compoundargs *argp, struct nfsd4_remove *remove)
+{
+ DECODE_HEAD;
+
+ READ_BUF(4);
+ READ32(remove->rm_namelen);
+ READ_BUF(remove->rm_namelen);
+ SAVEMEM(remove->rm_name, remove->rm_namelen);
+ if ((status = check_filename(remove->rm_name, remove->rm_namelen, nfserr_noent)))
+ return status;
+
+ DECODE_TAIL;
+}
+
+static int
+nfsd4_decode_rename(struct nfsd4_compoundargs *argp, struct nfsd4_rename *rename)
+{
+ DECODE_HEAD;
+
+ READ_BUF(4);
+ READ32(rename->rn_snamelen);
+ READ_BUF(rename->rn_snamelen + 4);
+ SAVEMEM(rename->rn_sname, rename->rn_snamelen);
+ READ32(rename->rn_tnamelen);
+ READ_BUF(rename->rn_tnamelen);
+ SAVEMEM(rename->rn_tname, rename->rn_tnamelen);
+ if ((status = check_filename(rename->rn_sname, rename->rn_snamelen, nfserr_noent)))
+ return status;
+ if ((status = check_filename(rename->rn_tname, rename->rn_tnamelen, nfserr_inval)))
+ return status;
+
+ DECODE_TAIL;
+}
+
+static int
+nfsd4_decode_renew(struct nfsd4_compoundargs *argp, clientid_t *clientid)
+{
+ DECODE_HEAD;
+
+ READ_BUF(sizeof(clientid_t));
+ COPYMEM(clientid, sizeof(clientid_t));
+
+ DECODE_TAIL;
+}
+
+static int
+nfsd4_decode_setattr(struct nfsd4_compoundargs *argp, struct nfsd4_setattr *setattr)
+{
+ 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;
+
+ DECODE_TAIL;
+}
+
+static int
+nfsd4_decode_setclientid(struct nfsd4_compoundargs *argp, struct nfsd4_setclientid *setclientid)
+{
+ DECODE_HEAD;
+
+ READ_BUF(12);
+ COPYMEM(setclientid->se_verf.data, 8);
+ READ32(setclientid->se_namelen);
+
+ READ_BUF(setclientid->se_namelen + 8);
+ SAVEMEM(setclientid->se_name, setclientid->se_namelen);
+ READ32(setclientid->se_callback_prog);
+ READ32(setclientid->se_callback_netid_len);
+
+ READ_BUF(setclientid->se_callback_netid_len + 4);
+ SAVEMEM(setclientid->se_callback_netid_val, setclientid->se_callback_netid_len);
+ READ32(setclientid->se_callback_addr_len);
+
+ READ_BUF(setclientid->se_callback_addr_len + 4);
+ SAVEMEM(setclientid->se_callback_addr_val, setclientid->se_callback_addr_len);
+ READ32(setclientid->se_callback_ident);
+
+ DECODE_TAIL;
+}
+
+static int
+nfsd4_decode_setclientid_confirm(struct nfsd4_compoundargs *argp, struct nfsd4_setclientid_confirm *scd_c)
+{
+ DECODE_HEAD;
+
+ READ_BUF(8 + sizeof(nfs4_verifier));
+ COPYMEM(&scd_c->sc_clientid, 8);
+ COPYMEM(&scd_c->sc_confirm, sizeof(nfs4_verifier));
+
+ DECODE_TAIL;
+}
+
+/* Also used for NVERIFY */
+static int
+nfsd4_decode_verify(struct nfsd4_compoundargs *argp, struct nfsd4_verify *verify)
+{
+#if 0
+ struct nfsd4_compoundargs save = {
+ .p = argp->p,
+ .end = argp->end,
+ .rqstp = argp->rqstp,
+ };
+ u32 ve_bmval[2];
+ struct iattr ve_iattr; /* request */
+ struct nfs4_acl *ve_acl; /* request */
+#endif
+ DECODE_HEAD;
+
+ if ((status = nfsd4_decode_bitmap(argp, verify->ve_bmval)))
+ goto out;
+
+ /* For convenience's sake, we compare raw xdr'd attributes in
+ * nfsd4_proc_verify; however we still decode here just to return
+ * correct error in case of bad xdr. */
+#if 0
+ status = nfsd4_decode_fattr(ve_bmval, &ve_iattr, &ve_acl);
+ if (status == nfserr_inval) {
+ status = nfserrno(status);
+ goto out;
+ }
+#endif
+ READ_BUF(4);
+ READ32(verify->ve_attrlen);
+ READ_BUF(verify->ve_attrlen);
+ SAVEMEM(verify->ve_attrval, verify->ve_attrlen);
+
+ DECODE_TAIL;
+}
+
+static int
+nfsd4_decode_write(struct nfsd4_compoundargs *argp, struct nfsd4_write *write)
+{
+ int avail;
+ int v;
+ 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));
+ READ64(write->wr_offset);
+ READ32(write->wr_stable_how);
+ if (write->wr_stable_how > 2)
+ goto xdr_error;
+ READ32(write->wr_buflen);
+
+ /* Sorry .. no magic macros for this.. *
+ * READ_BUF(write->wr_buflen);
+ * SAVEMEM(write->wr_buf, write->wr_buflen);
+ */
+ avail = (char*)argp->end - (char*)argp->p;
+ if (avail + argp->pagelen < write->wr_buflen) {
+ printk(KERN_NOTICE "xdr error! (%s:%d)\n", __FILE__, __LINE__);
+ goto xdr_error;
+ }
+ write->wr_vec[0].iov_base = p;
+ write->wr_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;
+ v++;
+ write->wr_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->pagelen -= PAGE_SIZE;
+ } else {
+ write->wr_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;
+ write->wr_vlen = v+1;
+
+ DECODE_TAIL;
+}
+
+static int
+nfsd4_decode_release_lockowner(struct nfsd4_compoundargs *argp, struct nfsd4_release_lockowner *rlockowner)
+{
+ DECODE_HEAD;
+
+ READ_BUF(12);
+ COPYMEM(&rlockowner->rl_clientid, sizeof(clientid_t));
+ READ32(rlockowner->rl_owner.len);
+ READ_BUF(rlockowner->rl_owner.len);
+ READMEM(rlockowner->rl_owner.data, rlockowner->rl_owner.len);
+
+ DECODE_TAIL;
+}
+
+static int
+nfsd4_decode_compound(struct nfsd4_compoundargs *argp)
+{
+ DECODE_HEAD;
+ struct nfsd4_op *op;
+ int i;
+
+ /*
+ * XXX: According to spec, we should check the tag
+ * for UTF-8 compliance. I'm postponing this for
+ * now because it seems that some clients do use
+ * binary tags.
+ */
+ READ_BUF(4);
+ READ32(argp->taglen);
+ READ_BUF(argp->taglen + 8);
+ SAVEMEM(argp->tag, argp->taglen);
+ READ32(argp->minorversion);
+ READ32(argp->opcnt);
+
+ if (argp->taglen > NFSD4_MAX_TAGLEN)
+ goto xdr_error;
+ if (argp->opcnt > 100)
+ goto xdr_error;
+
+ if (argp->opcnt > sizeof(argp->iops)/sizeof(argp->iops[0])) {
+ 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");
+ goto xdr_error;
+ }
+ }
+
+ for (i = 0; i < argp->opcnt; i++) {
+ op = &argp->ops[i];
+ op->replay = NULL;
+
+ /*
+ * We can't use READ_BUF() here because we need to handle
+ * a missing opcode as an OP_WRITE + 1. So we need to check
+ * to see if we're truly at the end of our buffer or if there
+ * is another page we need to flip to.
+ */
+
+ if (argp->p == argp->end) {
+ if (argp->pagelen < 4) {
+ /* There isn't an opcode still on the wire */
+ op->opnum = OP_WRITE + 1;
+ op->status = nfserr_bad_xdr;
+ argp->opcnt = i+1;
+ break;
+ }
+
+ /*
+ * False alarm. We just hit a page boundary, but there
+ * is still data available. Move pointer across page
+ * boundary. *snip from READ_BUF*
+ */
+ argp->p = page_address(argp->pagelist[0]);
+ argp->pagelist++;
+ if (argp->pagelen < PAGE_SIZE) {
+ argp->end = p + (argp->pagelen>>2);
+ argp->pagelen = 0;
+ } else {
+ argp->end = p + (PAGE_SIZE>>2);
+ argp->pagelen -= PAGE_SIZE;
+ }
+ }
+ 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:
+ op->opnum = OP_ILLEGAL;
+ op->status = nfserr_op_illegal;
+ break;
+ }
+
+ if (op->status) {
+ argp->opcnt = i+1;
+ break;
+ }
+ }
+
+ DECODE_TAIL;
+}
+/*
+ * END OF "GENERIC" DECODE ROUTINES.
+ */
+
+/*
+ * START OF "GENERIC" ENCODE ROUTINES.
+ * These may look a little ugly since they are imported from a "generic"
+ * set of XDR encode/decode routines which are intended to be shared by
+ * all of our NFSv4 implementations (OpenBSD, MacOS X...).
+ *
+ * If the pain of reading these is too great, it should be a straightforward
+ * 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 { \
+ *(p + XDR_QUADLEN(nbytes) -1) = 0; \
+ memcpy(p, ptr, nbytes); \
+ p += XDR_QUADLEN(nbytes); \
+} while (0)
+#define WRITECINFO(c) do { \
+ *p++ = htonl(c.atomic); \
+ *p++ = htonl(c.before_ctime_sec); \
+ *p++ = htonl(c.before_ctime_nsec); \
+ *p++ = htonl(c.after_ctime_sec); \
+ *p++ = htonl(c.after_ctime_nsec); \
+} while (0)
+
+#define RESERVE_SPACE(nbytes) do { \
+ p = resp->p; \
+ BUG_ON(p + XDR_QUADLEN(nbytes) > resp->end); \
+} while (0)
+#define ADJUST_ARGS() resp->p = p
+
+/*
+ * Header routine to setup seqid operation replay cache
+ */
+#define ENCODE_SEQID_OP_HEAD \
+ u32 *p; \
+ u32 *save; \
+ \
+ save = resp->p;
+
+/*
+ * Routine for encoding the result of a
+ * "seqid-mutating" NFSv4 operation. This is
+ * where seqids are incremented, and the
+ * replay cache is filled.
+ */
+
+#define ENCODE_SEQID_OP_TAIL(stateowner) do { \
+ if (seqid_mutating_err(nfserr) && stateowner) { \
+ if (stateowner->so_confirmed) \
+ stateowner->so_seqid++; \
+ stateowner->so_replay.rp_status = nfserr; \
+ stateowner->so_replay.rp_buflen = \
+ (((char *)(resp)->p - (char *)save)); \
+ memcpy(stateowner->so_replay.rp_buf, save, \
+ stateowner->so_replay.rp_buflen); \
+ } } while (0);
+
+
+static u32 nfs4_ftypes[16] = {
+ NF4BAD, NF4FIFO, NF4CHR, NF4BAD,
+ NF4DIR, NF4BAD, NF4BLK, NF4BAD,
+ NF4REG, NF4BAD, NF4LNK, NF4BAD,
+ NF4SOCK, NF4BAD, NF4LNK, NF4BAD,
+};
+
+static int
+nfsd4_encode_name(struct svc_rqst *rqstp, int whotype, uid_t id, int group,
+ u32 **p, int *buflen)
+{
+ int status;
+
+ if (*buflen < (XDR_QUADLEN(IDMAP_NAMESZ) << 2) + 4)
+ return nfserr_resource;
+ if (whotype != NFS4_ACL_WHO_NAMED)
+ status = nfs4_acl_write_who(whotype, (u8 *)(*p + 1));
+ else if (group)
+ status = nfsd_map_gid_to_name(rqstp, id, (u8 *)(*p + 1));
+ else
+ status = nfsd_map_uid_to_name(rqstp, id, (u8 *)(*p + 1));
+ if (status < 0)
+ return nfserrno(status);
+ *p = xdr_encode_opaque(*p, NULL, status);
+ *buflen -= (XDR_QUADLEN(status) << 2) + 4;
+ BUG_ON(*buflen < 0);
+ return 0;
+}
+
+static inline int
+nfsd4_encode_user(struct svc_rqst *rqstp, uid_t uid, u32 **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)
+{
+ return nfsd4_encode_name(rqstp, NFS4_ACL_WHO_NAMED, gid, 1, p, buflen);
+}
+
+static inline int
+nfsd4_encode_aclname(struct svc_rqst *rqstp, int whotype, uid_t id, int group,
+ u32 **p, int *buflen)
+{
+ return nfsd4_encode_name(rqstp, whotype, id, group, p, buflen);
+}
+
+
+/*
+ * Note: @fhp can be NULL; in this case, we might have to compose the filehandle
+ * ourselves.
+ *
+ * @countp is the buffer size in _words_; upon successful return this becomes
+ * replaced with the number of words written.
+ */
+int
+nfsd4_encode_fattr(struct svc_fh *fhp, struct svc_export *exp,
+ struct dentry *dentry, u32 *buffer, int *countp, u32 *bmval,
+ struct svc_rqst *rqstp)
+{
+ u32 bmval0 = bmval[0];
+ u32 bmval1 = bmval[1];
+ struct kstat stat;
+ struct svc_fh tempfh;
+ struct kstatfs statfs;
+ int buflen = *countp << 2;
+ u32 *attrlenp;
+ u32 dummy;
+ u64 dummy64;
+ u32 *p = buffer;
+ int status;
+ int aclsupport = 0;
+ struct nfs4_acl *acl = NULL;
+
+ BUG_ON(bmval1 & NFSD_WRITEONLY_ATTRS_WORD1);
+ BUG_ON(bmval0 & ~NFSD_SUPPORTED_ATTRS_WORD0);
+ BUG_ON(bmval1 & ~NFSD_SUPPORTED_ATTRS_WORD1);
+
+ status = vfs_getattr(exp->ex_mnt, dentry, &stat);
+ if (status)
+ goto out_nfserr;
+ if ((bmval0 & (FATTR4_WORD0_FILES_FREE | FATTR4_WORD0_FILES_TOTAL)) ||
+ (bmval1 & (FATTR4_WORD1_SPACE_AVAIL | FATTR4_WORD1_SPACE_FREE |
+ FATTR4_WORD1_SPACE_TOTAL))) {
+ status = vfs_statfs(dentry->d_inode->i_sb, &statfs);
+ if (status)
+ goto out_nfserr;
+ }
+ if ((bmval0 & (FATTR4_WORD0_FILEHANDLE | FATTR4_WORD0_FSID)) && !fhp) {
+ fh_init(&tempfh, NFS4_FHSIZE);
+ status = fh_compose(&tempfh, exp, dentry, NULL);
+ if (status)
+ goto out;
+ fhp = &tempfh;
+ }
+ if (bmval0 & (FATTR4_WORD0_ACL | FATTR4_WORD0_ACLSUPPORT
+ | FATTR4_WORD0_SUPPORTED_ATTRS)) {
+ status = nfsd4_get_nfs4_acl(rqstp, dentry, &acl);
+ aclsupport = (status == 0);
+ if (bmval0 & FATTR4_WORD0_ACL) {
+ if (status == -EOPNOTSUPP)
+ bmval0 &= ~FATTR4_WORD0_ACL;
+ else if (status == -EINVAL) {
+ status = nfserr_attrnotsupp;
+ goto out;
+ } else if (status != 0)
+ goto out_nfserr;
+ }
+ }
+ if ((buflen -= 16) < 0)
+ goto out_resource;
+
+ WRITE32(2);
+ WRITE32(bmval0);
+ WRITE32(bmval1);
+ attrlenp = p++; /* to be backfilled later */
+
+ if (bmval0 & FATTR4_WORD0_SUPPORTED_ATTRS) {
+ 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 (bmval0 & FATTR4_WORD0_TYPE) {
+ if ((buflen -= 4) < 0)
+ goto out_resource;
+ dummy = nfs4_ftypes[(stat.mode & S_IFMT) >> 12];
+ if (dummy == NF4BAD)
+ goto out_serverfault;
+ WRITE32(dummy);
+ }
+ if (bmval0 & FATTR4_WORD0_FH_EXPIRE_TYPE) {
+ if ((buflen -= 4) < 0)
+ goto out_resource;
+ WRITE32( NFS4_FH_NOEXPIRE_WITH_OPEN | NFS4_FH_VOL_RENAME );
+ }
+ if (bmval0 & FATTR4_WORD0_CHANGE) {
+ /*
+ * Note: This _must_ be consistent with the scheme for writing
+ * change_info, so any changes made here must be reflected there
+ * as well. (See xdr4.h:set_change_info() and the WRITECINFO()
+ * macro above.)
+ */
+ if ((buflen -= 8) < 0)
+ goto out_resource;
+ WRITE32(stat.ctime.tv_sec);
+ WRITE32(stat.ctime.tv_nsec);
+ }
+ if (bmval0 & FATTR4_WORD0_SIZE) {
+ if ((buflen -= 8) < 0)
+ goto out_resource;
+ WRITE64(stat.size);
+ }
+ if (bmval0 & FATTR4_WORD0_LINK_SUPPORT) {
+ if ((buflen -= 4) < 0)
+ goto out_resource;
+ WRITE32(1);
+ }
+ if (bmval0 & FATTR4_WORD0_SYMLINK_SUPPORT) {
+ if ((buflen -= 4) < 0)
+ goto out_resource;
+ WRITE32(1);
+ }
+ if (bmval0 & FATTR4_WORD0_NAMED_ATTR) {
+ if ((buflen -= 4) < 0)
+ goto out_resource;
+ WRITE32(0);
+ }
+ if (bmval0 & FATTR4_WORD0_FSID) {
+ if ((buflen -= 16) < 0)
+ goto out_resource;
+ if (is_fsid(fhp, rqstp->rq_reffh)) {
+ WRITE64((u64)exp->ex_fsid);
+ WRITE64((u64)0);
+ } else {
+ WRITE32(0);
+ WRITE32(MAJOR(stat.dev));
+ WRITE32(0);
+ WRITE32(MINOR(stat.dev));
+ }
+ }
+ if (bmval0 & FATTR4_WORD0_UNIQUE_HANDLES) {
+ if ((buflen -= 4) < 0)
+ goto out_resource;
+ WRITE32(0);
+ }
+ if (bmval0 & FATTR4_WORD0_LEASE_TIME) {
+ if ((buflen -= 4) < 0)
+ goto out_resource;
+ WRITE32(NFSD_LEASE_TIME);
+ }
+ if (bmval0 & FATTR4_WORD0_RDATTR_ERROR) {
+ if ((buflen -= 4) < 0)
+ goto out_resource;
+ WRITE32(0);
+ }
+ if (bmval0 & FATTR4_WORD0_ACL) {
+ struct nfs4_ace *ace;
+ struct list_head *h;
+
+ if (acl == NULL) {
+ if ((buflen -= 4) < 0)
+ goto out_resource;
+
+ WRITE32(0);
+ goto out_acl;
+ }
+ 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);
+
+ if ((buflen -= 4*3) < 0)
+ goto out_resource;
+ WRITE32(ace->type);
+ WRITE32(ace->flag);
+ WRITE32(ace->access_mask & NFS4_ACE_MASK_ALL);
+ status = nfsd4_encode_aclname(rqstp, ace->whotype,
+ ace->who, ace->flag & NFS4_ACE_IDENTIFIER_GROUP,
+ &p, &buflen);
+ if (status == nfserr_resource)
+ goto out_resource;
+ if (status)
+ goto out;
+ }
+ }
+out_acl:
+ if (bmval0 & FATTR4_WORD0_ACLSUPPORT) {
+ if ((buflen -= 4) < 0)
+ goto out_resource;
+ WRITE32(aclsupport ?
+ ACL4_SUPPORT_ALLOW_ACL|ACL4_SUPPORT_DENY_ACL : 0);
+ }
+ if (bmval0 & FATTR4_WORD0_CANSETTIME) {
+ if ((buflen -= 4) < 0)
+ goto out_resource;
+ WRITE32(1);
+ }
+ if (bmval0 & FATTR4_WORD0_CASE_INSENSITIVE) {
+ if ((buflen -= 4) < 0)
+ goto out_resource;
+ WRITE32(1);
+ }
+ if (bmval0 & FATTR4_WORD0_CASE_PRESERVING) {
+ if ((buflen -= 4) < 0)
+ goto out_resource;
+ WRITE32(1);
+ }
+ if (bmval0 & FATTR4_WORD0_CHOWN_RESTRICTED) {
+ if ((buflen -= 4) < 0)
+ goto out_resource;
+ WRITE32(1);
+ }
+ if (bmval0 & FATTR4_WORD0_FILEHANDLE) {
+ buflen -= (XDR_QUADLEN(fhp->fh_handle.fh_size) << 2) + 4;
+ if (buflen < 0)
+ goto out_resource;
+ WRITE32(fhp->fh_handle.fh_size);
+ WRITEMEM(&fhp->fh_handle.fh_base, fhp->fh_handle.fh_size);
+ }
+ if (bmval0 & FATTR4_WORD0_FILEID) {
+ if ((buflen -= 8) < 0)
+ goto out_resource;
+ WRITE64((u64) stat.ino);
+ }
+ if (bmval0 & FATTR4_WORD0_FILES_AVAIL) {
+ if ((buflen -= 8) < 0)
+ goto out_resource;
+ WRITE64((u64) statfs.f_ffree);
+ }
+ if (bmval0 & FATTR4_WORD0_FILES_FREE) {
+ if ((buflen -= 8) < 0)
+ goto out_resource;
+ WRITE64((u64) statfs.f_ffree);
+ }
+ if (bmval0 & FATTR4_WORD0_FILES_TOTAL) {
+ if ((buflen -= 8) < 0)
+ goto out_resource;
+ WRITE64((u64) statfs.f_files);
+ }
+ if (bmval0 & FATTR4_WORD0_HOMOGENEOUS) {
+ if ((buflen -= 4) < 0)
+ goto out_resource;
+ WRITE32(1);
+ }
+ if (bmval0 & FATTR4_WORD0_MAXFILESIZE) {
+ if ((buflen -= 8) < 0)
+ goto out_resource;
+ WRITE64(~(u64)0);
+ }
+ if (bmval0 & FATTR4_WORD0_MAXLINK) {
+ if ((buflen -= 4) < 0)
+ goto out_resource;
+ WRITE32(255);
+ }
+ if (bmval0 & FATTR4_WORD0_MAXNAME) {
+ if ((buflen -= 4) < 0)
+ goto out_resource;
+ WRITE32(~(u32) 0);
+ }
+ if (bmval0 & FATTR4_WORD0_MAXREAD) {
+ if ((buflen -= 8) < 0)
+ goto out_resource;
+ WRITE64((u64) NFSSVC_MAXBLKSIZE);
+ }
+ if (bmval0 & FATTR4_WORD0_MAXWRITE) {
+ if ((buflen -= 8) < 0)
+ goto out_resource;
+ WRITE64((u64) NFSSVC_MAXBLKSIZE);
+ }
+ if (bmval1 & FATTR4_WORD1_MODE) {
+ if ((buflen -= 4) < 0)
+ goto out_resource;
+ WRITE32(stat.mode & S_IALLUGO);
+ }
+ if (bmval1 & FATTR4_WORD1_NO_TRUNC) {
+ if ((buflen -= 4) < 0)
+ goto out_resource;
+ WRITE32(1);
+ }
+ if (bmval1 & FATTR4_WORD1_NUMLINKS) {
+ if ((buflen -= 4) < 0)
+ goto out_resource;
+ WRITE32(stat.nlink);
+ }
+ if (bmval1 & FATTR4_WORD1_OWNER) {
+ status = nfsd4_encode_user(rqstp, stat.uid, &p, &buflen);
+ if (status == nfserr_resource)
+ goto out_resource;
+ if (status)
+ goto out;
+ }
+ if (bmval1 & FATTR4_WORD1_OWNER_GROUP) {
+ status = nfsd4_encode_group(rqstp, stat.gid, &p, &buflen);
+ if (status == nfserr_resource)
+ goto out_resource;
+ if (status)
+ goto out;
+ }
+ if (bmval1 & FATTR4_WORD1_RAWDEV) {
+ if ((buflen -= 8) < 0)
+ goto out_resource;
+ WRITE32((u32) MAJOR(stat.rdev));
+ WRITE32((u32) MINOR(stat.rdev));
+ }
+ if (bmval1 & FATTR4_WORD1_SPACE_AVAIL) {
+ if ((buflen -= 8) < 0)
+ goto out_resource;
+ dummy64 = (u64)statfs.f_bavail * (u64)statfs.f_bsize;
+ WRITE64(dummy64);
+ }
+ if (bmval1 & FATTR4_WORD1_SPACE_FREE) {
+ if ((buflen -= 8) < 0)
+ goto out_resource;
+ dummy64 = (u64)statfs.f_bfree * (u64)statfs.f_bsize;
+ WRITE64(dummy64);
+ }
+ if (bmval1 & FATTR4_WORD1_SPACE_TOTAL) {
+ if ((buflen -= 8) < 0)
+ goto out_resource;
+ dummy64 = (u64)statfs.f_blocks * (u64)statfs.f_bsize;
+ WRITE64(dummy64);
+ }
+ if (bmval1 & FATTR4_WORD1_SPACE_USED) {
+ if ((buflen -= 8) < 0)
+ goto out_resource;
+ dummy64 = (u64)stat.blocks << 9;
+ WRITE64(dummy64);
+ }
+ if (bmval1 & FATTR4_WORD1_TIME_ACCESS) {
+ if ((buflen -= 12) < 0)
+ goto out_resource;
+ WRITE32(0);
+ WRITE32(stat.atime.tv_sec);
+ WRITE32(stat.atime.tv_nsec);
+ }
+ if (bmval1 & FATTR4_WORD1_TIME_DELTA) {
+ if ((buflen -= 12) < 0)
+ goto out_resource;
+ WRITE32(0);
+ WRITE32(1);
+ WRITE32(0);
+ }
+ if (bmval1 & FATTR4_WORD1_TIME_METADATA) {
+ if ((buflen -= 12) < 0)
+ goto out_resource;
+ WRITE32(0);
+ WRITE32(stat.ctime.tv_sec);
+ WRITE32(stat.ctime.tv_nsec);
+ }
+ if (bmval1 & FATTR4_WORD1_TIME_MODIFY) {
+ if ((buflen -= 12) < 0)
+ goto out_resource;
+ WRITE32(0);
+ WRITE32(stat.mtime.tv_sec);
+ 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);
+ }
+ *attrlenp = htonl((char *)p - (char *)attrlenp - 4);
+ *countp = p - buffer;
+ status = nfs_ok;
+
+out:
+ nfs4_acl_free(acl);
+ if (fhp == &tempfh)
+ fh_put(&tempfh);
+ return status;
+out_nfserr:
+ status = nfserrno(status);
+ goto out;
+out_resource:
+ *countp = 0;
+ status = nfserr_resource;
+ goto out;
+out_serverfault:
+ status = nfserr_serverfault;
+ goto out;
+}
+
+static int
+nfsd4_encode_dirent_fattr(struct nfsd4_readdir *cd,
+ const char *name, int namlen, u32 *p, int *buflen)
+{
+ struct svc_export *exp = cd->rd_fhp->fh_export;
+ struct dentry *dentry;
+ int nfserr;
+
+ 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)) {
+ /*
+ * -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.
+ */
+ nfserr = nfserr_dropit;
+ goto out_put;
+ }
+
+ }
+ nfserr = nfsd4_encode_fattr(NULL, exp, dentry, p, buflen, cd->rd_bmval,
+ cd->rd_rqstp);
+out_put:
+ dput(dentry);
+ exp_put(exp);
+ return nfserr;
+}
+
+static u32 *
+nfsd4_encode_rdattr_error(u32 *p, int buflen, int nfserr)
+{
+ u32 *attrlenp;
+
+ if (buflen < 6)
+ return NULL;
+ *p++ = htonl(2);
+ *p++ = htonl(FATTR4_WORD0_RDATTR_ERROR); /* bmval0 */
+ *p++ = htonl(0); /* bmval1 */
+
+ attrlenp = p++;
+ *p++ = nfserr; /* no htonl */
+ *attrlenp = htonl((char *)p - (char *)attrlenp - 4);
+ return p;
+}
+
+static int
+nfsd4_encode_dirent(struct readdir_cd *ccd, const char *name, int namlen,
+ loff_t offset, ino_t ino, unsigned int d_type)
+{
+ struct nfsd4_readdir *cd = container_of(ccd, struct nfsd4_readdir, common);
+ int buflen;
+ u32 *p = cd->buffer;
+ int nfserr = nfserr_toosmall;
+
+ /* In nfsv4, "." and ".." never make it onto the wire.. */
+ if (name && isdotent(name, namlen)) {
+ cd->common.err = nfs_ok;
+ return 0;
+ }
+
+ if (cd->offset)
+ xdr_encode_hyper(cd->offset, (u64) offset);
+
+ buflen = cd->buflen - 4 - XDR_QUADLEN(namlen);
+ if (buflen < 0)
+ goto fail;
+
+ *p++ = xdr_one; /* mark entry present */
+ cd->offset = p; /* remember pointer */
+ p = xdr_encode_hyper(p, NFS_OFFSET_MAX); /* offset of next entry */
+ p = xdr_encode_array(p, name, namlen); /* name length & name */
+
+ nfserr = nfsd4_encode_dirent_fattr(cd, name, namlen, p, &buflen);
+ switch (nfserr) {
+ case nfs_ok:
+ p += buflen;
+ break;
+ case nfserr_resource:
+ nfserr = nfserr_toosmall;
+ goto fail;
+ case nfserr_dropit:
+ goto fail;
+ default:
+ /*
+ * If the client requested the RDATTR_ERROR attribute,
+ * we stuff the error code into this attribute
+ * and continue. If this attribute was not requested,
+ * then in accordance with the spec, we fail the
+ * entire READDIR operation(!)
+ */
+ if (!(cd->rd_bmval[0] & FATTR4_WORD0_RDATTR_ERROR))
+ goto fail;
+ nfserr = nfserr_toosmall;
+ p = nfsd4_encode_rdattr_error(p, buflen, nfserr);
+ if (p == NULL)
+ goto fail;
+ }
+ cd->buflen -= (p - cd->buffer);
+ cd->buffer = p;
+ cd->common.err = nfs_ok;
+ return 0;
+fail:
+ cd->common.err = nfserr;
+ return -EINVAL;
+}
+
+static void
+nfsd4_encode_access(struct nfsd4_compoundres *resp, int nfserr, struct nfsd4_access *access)
+{
+ ENCODE_HEAD;
+
+ if (!nfserr) {
+ RESERVE_SPACE(8);
+ WRITE32(access->ac_supported);
+ WRITE32(access->ac_resp_access);
+ ADJUST_ARGS();
+ }
+}
+
+static void
+nfsd4_encode_close(struct nfsd4_compoundres *resp, int 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();
+ }
+ ENCODE_SEQID_OP_TAIL(close->cl_stateowner);
+}
+
+
+static void
+nfsd4_encode_commit(struct nfsd4_compoundres *resp, int nfserr, struct nfsd4_commit *commit)
+{
+ ENCODE_HEAD;
+
+ if (!nfserr) {
+ RESERVE_SPACE(8);
+ WRITEMEM(commit->co_verf.data, 8);
+ ADJUST_ARGS();
+ }
+}
+
+static void
+nfsd4_encode_create(struct nfsd4_compoundres *resp, int nfserr, struct nfsd4_create *create)
+{
+ ENCODE_HEAD;
+
+ if (!nfserr) {
+ RESERVE_SPACE(32);
+ WRITECINFO(create->cr_cinfo);
+ WRITE32(2);
+ WRITE32(create->cr_bmval[0]);
+ WRITE32(create->cr_bmval[1]);
+ ADJUST_ARGS();
+ }
+}
+
+static int
+nfsd4_encode_getattr(struct nfsd4_compoundres *resp, int nfserr, struct nfsd4_getattr *getattr)
+{
+ struct svc_fh *fhp = getattr->ga_fhp;
+ int buflen;
+
+ if (nfserr)
+ return nfserr;
+
+ buflen = resp->end - resp->p - (COMPOUND_ERR_SLACK_SPACE >> 2);
+ nfserr = nfsd4_encode_fattr(fhp, fhp->fh_export, fhp->fh_dentry,
+ resp->p, &buflen, getattr->ga_bmval,
+ resp->rqstp);
+
+ if (!nfserr)
+ resp->p += buflen;
+ return nfserr;
+}
+
+static void
+nfsd4_encode_getfh(struct nfsd4_compoundres *resp, int nfserr, struct svc_fh *fhp)
+{
+ unsigned int len;
+ ENCODE_HEAD;
+
+ if (!nfserr) {
+ len = fhp->fh_handle.fh_size;
+ RESERVE_SPACE(len + 4);
+ WRITE32(len);
+ WRITEMEM(&fhp->fh_handle.fh_base, len);
+ ADJUST_ARGS();
+ }
+}
+
+/*
+* Including all fields other than the name, a LOCK4denied structure requires
+* 8(clientid) + 4(namelen) + 8(offset) + 8(length) + 4(type) = 32 bytes.
+*/
+static void
+nfsd4_encode_lock_denied(struct nfsd4_compoundres *resp, struct nfsd4_lock_denied *ld)
+{
+ ENCODE_HEAD;
+
+ RESERVE_SPACE(32 + XDR_LEN(ld->ld_sop ? ld->ld_sop->so_owner.len : 0));
+ WRITE64(ld->ld_start);
+ WRITE64(ld->ld_length);
+ WRITE32(ld->ld_type);
+ if (ld->ld_sop) {
+ WRITEMEM(&ld->ld_clientid, 8);
+ WRITE32(ld->ld_sop->so_owner.len);
+ WRITEMEM(ld->ld_sop->so_owner.data, ld->ld_sop->so_owner.len);
+ kref_put(&ld->ld_sop->so_ref, nfs4_free_stateowner);
+ } else { /* non - nfsv4 lock in conflict, no clientid nor owner */
+ WRITE64((u64)0); /* clientid */
+ WRITE32(0); /* length of owner name */
+ }
+ ADJUST_ARGS();
+}
+
+static void
+nfsd4_encode_lock(struct nfsd4_compoundres *resp, int 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)
+ nfsd4_encode_lock_denied(resp, &lock->lk_denied);
+
+ ENCODE_SEQID_OP_TAIL(lock->lk_stateowner);
+}
+
+static void
+nfsd4_encode_lockt(struct nfsd4_compoundres *resp, int nfserr, struct nfsd4_lockt *lockt)
+{
+ if (nfserr == nfserr_denied)
+ nfsd4_encode_lock_denied(resp, &lockt->lt_denied);
+}
+
+static void
+nfsd4_encode_locku(struct nfsd4_compoundres *resp, int 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();
+ }
+
+ ENCODE_SEQID_OP_TAIL(locku->lu_stateowner);
+}
+
+
+static void
+nfsd4_encode_link(struct nfsd4_compoundres *resp, int nfserr, struct nfsd4_link *link)
+{
+ ENCODE_HEAD;
+
+ if (!nfserr) {
+ RESERVE_SPACE(20);
+ WRITECINFO(link->li_cinfo);
+ ADJUST_ARGS();
+ }
+}
+
+
+static void
+nfsd4_encode_open(struct nfsd4_compoundres *resp, int nfserr, struct nfsd4_open *open)
+{
+ 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));
+ WRITECINFO(open->op_cinfo);
+ WRITE32(open->op_rflags);
+ WRITE32(2);
+ WRITE32(open->op_bmval[0]);
+ WRITE32(open->op_bmval[1]);
+ WRITE32(open->op_delegate_type);
+ ADJUST_ARGS();
+
+ switch (open->op_delegate_type) {
+ 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));
+ WRITE32(0);
+
+ /*
+ * TODO: ACE's in delegations
+ */
+ WRITE32(NFS4_ACE_ACCESS_ALLOWED_ACE_TYPE);
+ WRITE32(0);
+ WRITE32(0);
+ WRITE32(0); /* XXX: is NULL principal ok? */
+ ADJUST_ARGS();
+ break;
+ case NFS4_OPEN_DELEGATE_WRITE:
+ RESERVE_SPACE(32 + sizeof(stateid_t));
+ WRITEMEM(&open->op_delegate_stateid, sizeof(stateid_t));
+ WRITE32(0);
+
+ /*
+ * TODO: space_limit's in delegations
+ */
+ WRITE32(NFS4_LIMIT_SIZE);
+ WRITE32(~(u32)0);
+ WRITE32(~(u32)0);
+
+ /*
+ * TODO: ACE's in delegations
+ */
+ WRITE32(NFS4_ACE_ACCESS_ALLOWED_ACE_TYPE);
+ WRITE32(0);
+ WRITE32(0);
+ WRITE32(0); /* XXX: is NULL principal ok? */
+ ADJUST_ARGS();
+ break;
+ default:
+ BUG();
+ }
+ /* XXX save filehandle here */
+out:
+ ENCODE_SEQID_OP_TAIL(open->op_stateowner);
+}
+
+static void
+nfsd4_encode_open_confirm(struct nfsd4_compoundres *resp, int 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();
+ }
+
+ ENCODE_SEQID_OP_TAIL(oc->oc_stateowner);
+}
+
+static void
+nfsd4_encode_open_downgrade(struct nfsd4_compoundres *resp, int 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();
+ }
+
+ ENCODE_SEQID_OP_TAIL(od->od_stateowner);
+}
+
+static int
+nfsd4_encode_read(struct nfsd4_compoundres *resp, int nfserr, struct nfsd4_read *read)
+{
+ u32 eof;
+ int v, pn;
+ unsigned long maxcount;
+ long len;
+ ENCODE_HEAD;
+
+ if (nfserr)
+ return nfserr;
+ if (resp->xbuf->page_len)
+ return nfserr_resource;
+
+ RESERVE_SPACE(8); /* eof flag and byte count */
+
+ maxcount = NFSSVC_MAXBLKSIZE;
+ 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;
+ 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,
+ &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);
+
+ WRITE32(eof);
+ WRITE32(maxcount);
+ ADJUST_ARGS();
+ resp->xbuf->head[0].iov_len = ((char*)resp->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;
+ 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;
+ resp->xbuf->tail[0].iov_base += maxcount&3;
+ resp->xbuf->tail[0].iov_len = 4 - (maxcount&3);
+ }
+ return 0;
+}
+
+static int
+nfsd4_encode_readlink(struct nfsd4_compoundres *resp, int nfserr, struct nfsd4_readlink *readlink)
+{
+ int maxcount;
+ char *page;
+ ENCODE_HEAD;
+
+ 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]);
+
+ maxcount = PAGE_SIZE;
+ RESERVE_SPACE(4);
+
+ /*
+ * XXX: By default, the ->readlink() VFS op will truncate symlinks
+ * if they would overflow the buffer. Is this kosher in NFSv4? If
+ * not, one easy fix is: if ->readlink() precisely fills the buffer,
+ * assume that truncation occurred, and return NFS4ERR_RESOURCE.
+ */
+ nfserr = nfsd_readlink(readlink->rl_rqstp, readlink->rl_fhp, page, &maxcount);
+ if (nfserr == nfserr_isdir)
+ return nfserr_inval;
+ if (nfserr)
+ return nfserr;
+
+ WRITE32(maxcount);
+ ADJUST_ARGS();
+ resp->xbuf->head[0].iov_len = ((char*)resp->p) - (char*)resp->xbuf->head[0].iov_base;
+
+ 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;
+ 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;
+ resp->xbuf->tail[0].iov_base += maxcount&3;
+ resp->xbuf->tail[0].iov_len = 4 - (maxcount&3);
+ }
+ return 0;
+}
+
+static int
+nfsd4_encode_readdir(struct nfsd4_compoundres *resp, int nfserr, struct nfsd4_readdir *readdir)
+{
+ int maxcount;
+ loff_t offset;
+ u32 *page, *savep;
+ ENCODE_HEAD;
+
+ if (nfserr)
+ return nfserr;
+ if (resp->xbuf->page_len)
+ return nfserr_resource;
+
+ RESERVE_SPACE(8); /* verifier */
+ savep = p;
+
+ /* XXX: Following NFSv3, we ignore the READDIR verifier for now. */
+ WRITE32(0);
+ WRITE32(0);
+ ADJUST_ARGS();
+ resp->xbuf->head[0].iov_len = ((char*)resp->p) - (char*)resp->xbuf->head[0].iov_base;
+
+ maxcount = PAGE_SIZE;
+ if (maxcount > readdir->rd_maxcount)
+ maxcount = readdir->rd_maxcount;
+
+ /*
+ * Convert from bytes to words, account for the two words already
+ * written, make sure to leave two words at the end for the next
+ * pointer and eof field.
+ */
+ maxcount = (maxcount >> 2) - 4;
+ if (maxcount < 0) {
+ nfserr = nfserr_toosmall;
+ goto err_no_verf;
+ }
+
+ svc_take_page(resp->rqstp);
+ page = page_address(resp->rqstp->rq_respages[resp->rqstp->rq_resused-1]);
+ readdir->common.err = 0;
+ readdir->buflen = maxcount;
+ readdir->buffer = page;
+ readdir->offset = NULL;
+
+ offset = readdir->rd_cookie;
+ nfserr = nfsd_readdir(readdir->rd_rqstp, readdir->rd_fhp,
+ &offset,
+ &readdir->common, nfsd4_encode_dirent);
+ if (nfserr == nfs_ok &&
+ readdir->common.err == nfserr_toosmall &&
+ readdir->buffer == page)
+ nfserr = nfserr_toosmall;
+ if (nfserr == nfserr_symlink)
+ nfserr = nfserr_notdir;
+ if (nfserr)
+ goto err_no_verf;
+
+ if (readdir->offset)
+ xdr_encode_hyper(readdir->offset, offset);
+
+ 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]);
+
+ /* 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;
+ resp->xbuf->tail[0].iov_len = 0;
+ resp->p = resp->xbuf->tail[0].iov_base;
+ resp->end = resp->p + PAGE_SIZE/4;
+
+ return 0;
+err_no_verf:
+ p = savep;
+ ADJUST_ARGS();
+ return nfserr;
+}
+
+static void
+nfsd4_encode_remove(struct nfsd4_compoundres *resp, int nfserr, struct nfsd4_remove *remove)
+{
+ ENCODE_HEAD;
+
+ if (!nfserr) {
+ RESERVE_SPACE(20);
+ WRITECINFO(remove->rm_cinfo);
+ ADJUST_ARGS();
+ }
+}
+
+static void
+nfsd4_encode_rename(struct nfsd4_compoundres *resp, int nfserr, struct nfsd4_rename *rename)
+{
+ ENCODE_HEAD;
+
+ if (!nfserr) {
+ RESERVE_SPACE(40);
+ WRITECINFO(rename->rn_sinfo);
+ WRITECINFO(rename->rn_tinfo);
+ ADJUST_ARGS();
+ }
+}
+
+/*
+ * 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)
+{
+ ENCODE_HEAD;
+
+ RESERVE_SPACE(12);
+ if (nfserr) {
+ WRITE32(2);
+ WRITE32(0);
+ WRITE32(0);
+ }
+ else {
+ WRITE32(2);
+ WRITE32(setattr->sa_bmval[0]);
+ WRITE32(setattr->sa_bmval[1]);
+ }
+ ADJUST_ARGS();
+}
+
+static void
+nfsd4_encode_setclientid(struct nfsd4_compoundres *resp, int nfserr, struct nfsd4_setclientid *scd)
+{
+ ENCODE_HEAD;
+
+ if (!nfserr) {
+ RESERVE_SPACE(8 + sizeof(nfs4_verifier));
+ WRITEMEM(&scd->se_clientid, 8);
+ WRITEMEM(&scd->se_confirm, sizeof(nfs4_verifier));
+ ADJUST_ARGS();
+ }
+ else if (nfserr == nfserr_clid_inuse) {
+ RESERVE_SPACE(8);
+ WRITE32(0);
+ WRITE32(0);
+ ADJUST_ARGS();
+ }
+}
+
+static void
+nfsd4_encode_write(struct nfsd4_compoundres *resp, int nfserr, struct nfsd4_write *write)
+{
+ ENCODE_HEAD;
+
+ if (!nfserr) {
+ RESERVE_SPACE(16);
+ WRITE32(write->wr_bytes_written);
+ WRITE32(write->wr_how_written);
+ WRITEMEM(write->wr_verifier.data, 8);
+ ADJUST_ARGS();
+ }
+}
+
+void
+nfsd4_encode_operation(struct nfsd4_compoundres *resp, struct nfsd4_op *op)
+{
+ u32 *statp;
+ ENCODE_HEAD;
+
+ 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;
+ }
+
+ /*
+ * Note: We write the status directly, instead of using WRITE32(),
+ * since it is already in network byte order.
+ */
+ *statp = op->status;
+}
+
+/*
+ * Encode the reply stored in the stateowner reply cache
+ *
+ * XDR note: do not encode rp->rp_buflen: the buffer contains the
+ * previously sent already encoded operation.
+ *
+ * called with nfs4_lock_state() held
+ */
+void
+nfsd4_encode_replay(struct nfsd4_compoundres *resp, struct nfsd4_op *op)
+{
+ ENCODE_HEAD;
+ struct nfs4_replay *rp = op->replay;
+
+ BUG_ON(!rp);
+
+ RESERVE_SPACE(8);
+ WRITE32(op->opnum);
+ *p++ = rp->rp_status; /* already xdr'ed */
+ ADJUST_ARGS();
+
+ RESERVE_SPACE(rp->rp_buflen);
+ WRITEMEM(rp->rp_buf, rp->rp_buflen);
+ ADJUST_ARGS();
+}
+
+/*
+ * END OF "GENERIC" ENCODE ROUTINES.
+ */
+
+int
+nfs4svc_encode_voidres(struct svc_rqst *rqstp, u32 *p, void *dummy)
+{
+ return xdr_ressize_check(rqstp, p);
+}
+
+void nfsd4_release_compoundargs(struct nfsd4_compoundargs *args)
+{
+ if (args->ops != args->iops) {
+ kfree(args->ops);
+ args->ops = args->iops;
+ }
+ if (args->tmpp) {
+ kfree(args->tmpp);
+ args->tmpp = NULL;
+ }
+ while (args->to_free) {
+ struct tmpbuf *tb = args->to_free;
+ args->to_free = tb->next;
+ tb->release(tb->buf);
+ kfree(tb);
+ }
+}
+
+int
+nfs4svc_decode_compoundargs(struct svc_rqst *rqstp, u32 *p, struct nfsd4_compoundargs *args)
+{
+ int status;
+
+ args->p = p;
+ args->end = rqstp->rq_arg.head[0].iov_base + rqstp->rq_arg.head[0].iov_len;
+ args->pagelist = rqstp->rq_arg.pages;
+ args->pagelen = rqstp->rq_arg.page_len;
+ args->tmpp = NULL;
+ args->to_free = NULL;
+ args->ops = args->iops;
+ args->rqstp = rqstp;
+
+ status = nfsd4_decode_compound(args);
+ if (status) {
+ nfsd4_release_compoundargs(args);
+ }
+ return !status;
+}
+
+int
+nfs4svc_encode_compoundres(struct svc_rqst *rqstp, u32 *p, struct nfsd4_compoundres *resp)
+{
+ /*
+ * All that remains is to write the tag and operation count...
+ */
+ struct kvec *iov;
+ p = resp->tagp;
+ *p++ = htonl(resp->taglen);
+ memcpy(p, resp->tag, resp->taglen);
+ p += XDR_QUADLEN(resp->taglen);
+ *p++ = htonl(resp->opcnt);
+
+ if (rqstp->rq_res.page_len)
+ iov = &rqstp->rq_res.tail[0];
+ else
+ iov = &rqstp->rq_res.head[0];
+ iov->iov_len = ((char*)resp->p) - (char*)iov->iov_base;
+ BUG_ON(iov->iov_len > PAGE_SIZE);
+ return 1;
+}
+
+/*
+ * Local variables:
+ * c-basic-offset: 8
+ * End:
+ */