#include <linux/sunrpc/svc.h>
#include <linux/nfsd/nfsd.h>
#include <linux/nfsd/xdr3.h>
+#include "auth.h"
#define NFSDDBG_FACILITY NFSDDBG_XDR
* no slashes or null bytes.
*/
static __be32 *
-decode_filename(__be32 *p, char **namp, int *lenp)
+decode_filename(__be32 *p, char **namp, unsigned int *lenp)
{
char *name;
- int i;
+ unsigned int i;
if ((p = xdr_decode_string_inplace(p, namp, lenp, NFS3_MAXNAMLEN)) != NULL) {
for (i = 0, name = *namp; i < *lenp; i++, name++) {
encode_fattr3(struct svc_rqst *rqstp, __be32 *p, struct svc_fh *fhp,
struct kstat *stat)
{
- struct dentry *dentry = fhp->fh_dentry;
- struct timespec time;
-
*p++ = htonl(nfs3_ftypes[(stat->mode & S_IFMT) >> 12]);
*p++ = htonl((u32) stat->mode);
*p++ = htonl((u32) stat->nlink);
*p++ = htonl((u32) MAJOR(stat->rdev));
*p++ = htonl((u32) MINOR(stat->rdev));
p = encode_fsid(p, fhp);
- p = xdr_encode_hyper(p, (u64) stat->ino);
+ p = xdr_encode_hyper(p, stat->ino);
p = encode_time3(p, &stat->atime);
- lease_get_mtime(dentry->d_inode, &time);
- p = encode_time3(p, &time);
+ p = encode_time3(p, &stat->mtime);
p = encode_time3(p, &stat->ctime);
return p;
static __be32 *
encode_saved_post_attr(struct svc_rqst *rqstp, __be32 *p, struct svc_fh *fhp)
{
- struct inode *inode = fhp->fh_dentry->d_inode;
-
/* Attributes to follow */
*p++ = xdr_one;
-
- *p++ = htonl(nfs3_ftypes[(fhp->fh_post_mode & S_IFMT) >> 12]);
- *p++ = htonl((u32) fhp->fh_post_mode);
- *p++ = htonl((u32) fhp->fh_post_nlink);
- *p++ = htonl((u32) nfsd_ruid(rqstp, fhp->fh_post_uid));
- *p++ = htonl((u32) nfsd_rgid(rqstp, fhp->fh_post_gid));
- if (S_ISLNK(fhp->fh_post_mode) && fhp->fh_post_size > NFS3_MAXPATHLEN) {
- p = xdr_encode_hyper(p, (u64) NFS3_MAXPATHLEN);
- } else {
- p = xdr_encode_hyper(p, (u64) fhp->fh_post_size);
- }
- p = xdr_encode_hyper(p, ((u64)fhp->fh_post_blocks) << 9);
- *p++ = fhp->fh_post_rdev[0];
- *p++ = fhp->fh_post_rdev[1];
- p = encode_fsid(p, fhp);
- p = xdr_encode_hyper(p, (u64) inode->i_ino);
- p = encode_time3(p, &fhp->fh_post_atime);
- p = encode_time3(p, &fhp->fh_post_mtime);
- p = encode_time3(p, &fhp->fh_post_ctime);
-
- return p;
+ return encode_fattr3(rqstp, p, fhp, &fhp->fh_post_attr);
}
/*
encode_post_op_attr(struct svc_rqst *rqstp, __be32 *p, struct svc_fh *fhp)
{
struct dentry *dentry = fhp->fh_dentry;
- if (dentry && dentry->d_inode != NULL) {
+ if (dentry && dentry->d_inode) {
int err;
struct kstat stat;
err = vfs_getattr(fhp->fh_export->ex_mnt, dentry, &stat);
if (!err) {
*p++ = xdr_one; /* attributes follow */
+ lease_get_mtime(dentry->d_inode, &stat.mtime);
return encode_fattr3(rqstp, p, fhp, &stat);
}
}
return encode_post_op_attr(rqstp, p, fhp);
}
+/*
+ * Fill in the post_op attr for the wcc data
+ */
+void fill_post_wcc(struct svc_fh *fhp)
+{
+ int err;
+
+ if (fhp->fh_post_saved)
+ printk("nfsd: inode locked twice during operation.\n");
+
+ err = vfs_getattr(fhp->fh_export->ex_mnt, fhp->fh_dentry,
+ &fhp->fh_post_attr);
+ if (err)
+ fhp->fh_post_saved = 0;
+ else
+ fhp->fh_post_saved = 1;
+}
/*
* XDR decode functions
nfs3svc_decode_sattrargs(struct svc_rqst *rqstp, __be32 *p,
struct nfsd3_sattrargs *args)
{
- if (!(p = decode_fh(p, &args->fh))
- || !(p = decode_sattr3(p, &args->attrs)))
+ if (!(p = decode_fh(p, &args->fh)))
return 0;
+ p = decode_sattr3(p, &args->attrs);
if ((args->check_guard = ntohl(*p++)) != 0) {
struct timespec time;
int v,pn;
u32 max_blocksize = svc_max_payload(rqstp);
- if (!(p = decode_fh(p, &args->fh))
- || !(p = xdr_decode_hyper(p, &args->offset)))
+ if (!(p = decode_fh(p, &args->fh)))
return 0;
+ p = xdr_decode_hyper(p, &args->offset);
len = args->count = ntohl(*p++);
nfs3svc_decode_writeargs(struct svc_rqst *rqstp, __be32 *p,
struct nfsd3_writeargs *args)
{
- unsigned int len, v, hdr;
+ unsigned int len, v, hdr, dlen;
u32 max_blocksize = svc_max_payload(rqstp);
- if (!(p = decode_fh(p, &args->fh))
- || !(p = xdr_decode_hyper(p, &args->offset)))
+ if (!(p = decode_fh(p, &args->fh)))
return 0;
+ p = xdr_decode_hyper(p, &args->offset);
args->count = ntohl(*p++);
args->stable = ntohl(*p++);
len = args->len = ntohl(*p++);
+ /*
+ * The count must equal the amount of data passed.
+ */
+ if (args->count != args->len)
+ return 0;
+ /*
+ * Check to make sure that we got the right number of
+ * bytes.
+ */
hdr = (void*)p - rqstp->rq_arg.head[0].iov_base;
- if (rqstp->rq_arg.len < hdr ||
- rqstp->rq_arg.len - hdr < len)
+ dlen = rqstp->rq_arg.head[0].iov_len + rqstp->rq_arg.page_len
+ - hdr;
+ /*
+ * Round the length of the data which was specified up to
+ * the next multiple of XDR units and then compare that
+ * against the length which was actually received.
+ * Note that when RPCSEC/GSS (for example) is used, the
+ * data buffer can be padded so dlen might be larger
+ * than required. It must never be smaller.
+ */
+ if (dlen < XDR_QUADLEN(len)*4)
return 0;
+ if (args->count > max_blocksize) {
+ args->count = max_blocksize;
+ len = args->len = max_blocksize;
+ }
rqstp->rq_vec[0].iov_base = (void*)p;
rqstp->rq_vec[0].iov_len = rqstp->rq_arg.head[0].iov_len - hdr;
-
- if (len > max_blocksize)
- len = max_blocksize;
- v= 0;
+ v = 0;
while (len > rqstp->rq_vec[v].iov_len) {
len -= rqstp->rq_vec[v].iov_len;
v++;
rqstp->rq_vec[v].iov_len = PAGE_SIZE;
}
rqstp->rq_vec[v].iov_len = len;
- args->vlen = v+1;
-
- return args->count == args->len && rqstp->rq_vec[0].iov_len > 0;
+ args->vlen = v + 1;
+ return 1;
}
int
switch (args->createmode = ntohl(*p++)) {
case NFS3_CREATE_UNCHECKED:
case NFS3_CREATE_GUARDED:
- if (!(p = decode_sattr3(p, &args->attrs)))
- return 0;
+ p = decode_sattr3(p, &args->attrs);
break;
case NFS3_CREATE_EXCLUSIVE:
args->verf = p;
nfs3svc_decode_mkdirargs(struct svc_rqst *rqstp, __be32 *p,
struct nfsd3_createargs *args)
{
- if (!(p = decode_fh(p, &args->fh))
- || !(p = decode_filename(p, &args->name, &args->len))
- || !(p = decode_sattr3(p, &args->attrs)))
+ if (!(p = decode_fh(p, &args->fh)) ||
+ !(p = decode_filename(p, &args->name, &args->len)))
return 0;
+ p = decode_sattr3(p, &args->attrs);
return xdr_argsize_check(rqstp, p);
}
nfs3svc_decode_symlinkargs(struct svc_rqst *rqstp, __be32 *p,
struct nfsd3_symlinkargs *args)
{
- unsigned int len;
- int avail;
+ unsigned int len, avail;
char *old, *new;
struct kvec *vec;
- if (!(p = decode_fh(p, &args->ffh))
- || !(p = decode_filename(p, &args->fname, &args->flen))
- || !(p = decode_sattr3(p, &args->attrs))
+ if (!(p = decode_fh(p, &args->ffh)) ||
+ !(p = decode_filename(p, &args->fname, &args->flen))
)
return 0;
+ p = decode_sattr3(p, &args->attrs);
+
/* now decode the pathname, which might be larger than the first page.
* As we have to check for nul's anyway, we copy it into a new page
* This page appears in the rq_res.pages list, but as pages_len is always
/* now copy next page if there is one */
if (len && !avail && rqstp->rq_arg.page_len) {
avail = rqstp->rq_arg.page_len;
- if (avail > PAGE_SIZE) avail = PAGE_SIZE;
+ if (avail > PAGE_SIZE)
+ avail = PAGE_SIZE;
old = page_address(rqstp->rq_arg.pages[0]);
}
while (len && avail && *old) {
args->ftype = ntohl(*p++);
if (args->ftype == NF3BLK || args->ftype == NF3CHR
- || args->ftype == NF3SOCK || args->ftype == NF3FIFO) {
- if (!(p = decode_sattr3(p, &args->attrs)))
- return 0;
- }
+ || args->ftype == NF3SOCK || args->ftype == NF3FIFO)
+ p = decode_sattr3(p, &args->attrs);
if (args->ftype == NF3BLK || args->ftype == NF3CHR) {
args->major = ntohl(*p++);
nfs3svc_encode_attrstat(struct svc_rqst *rqstp, __be32 *p,
struct nfsd3_attrstat *resp)
{
- if (resp->status == 0)
+ if (resp->status == 0) {
+ lease_get_mtime(resp->fh.fh_dentry->d_inode,
+ &resp->stat.mtime);
p = encode_fattr3(rqstp, p, &resp->fh, &resp->stat);
+ }
return xdr_ressize_check(rqstp, p);
}
static __be32 *
encode_entry_baggage(struct nfsd3_readdirres *cd, __be32 *p, const char *name,
- int namlen, ino_t ino)
+ int namlen, u64 ino)
{
*p++ = xdr_one; /* mark entry present */
p = xdr_encode_hyper(p, ino); /* file id */
encode_entryplus_baggage(struct nfsd3_readdirres *cd, __be32 *p,
struct svc_fh *fhp)
{
- p = encode_post_op_attr(cd->rqstp, p, fhp);
- *p++ = xdr_one; /* yes, a file handle follows */
- p = encode_fh(p, fhp);
- fh_put(fhp);
- return p;
+ p = encode_post_op_attr(cd->rqstp, p, fhp);
+ *p++ = xdr_one; /* yes, a file handle follows */
+ p = encode_fh(p, fhp);
+ fh_put(fhp);
+ return p;
}
static int
#define NFS3_ENTRY_BAGGAGE (2 + 1 + 2 + 1)
#define NFS3_ENTRYPLUS_BAGGAGE (1 + 21 + 1 + (NFS3_FHSIZE >> 2))
static int
-encode_entry(struct readdir_cd *ccd, const char *name,
- int namlen, off_t offset, ino_t ino, unsigned int d_type, int plus)
+encode_entry(struct readdir_cd *ccd, const char *name, int namlen,
+ loff_t offset, u64 ino, unsigned int d_type, int plus)
{
struct nfsd3_readdirres *cd = container_of(ccd, struct nfsd3_readdirres,
common);
*cd->offset1 = htonl(offset64 & 0xffffffff);
cd->offset1 = NULL;
} else {
- xdr_encode_hyper(cd->offset, (u64) offset);
+ xdr_encode_hyper(cd->offset, offset64);
}
}