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path: root/fs/nfsd/nfsfh.c
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Diffstat (limited to 'fs/nfsd/nfsfh.c')
-rw-r--r--fs/nfsd/nfsfh.c67
1 files changed, 31 insertions, 36 deletions
diff --git a/fs/nfsd/nfsfh.c b/fs/nfsd/nfsfh.c
index 7011d62acfc8..4f712e970584 100644
--- a/fs/nfsd/nfsfh.c
+++ b/fs/nfsd/nfsfh.c
@@ -115,8 +115,7 @@ fh_verify(struct svc_rqst *rqstp, struct svc_fh *fhp, int type, int access)
dprintk("nfsd: fh_verify(%s)\n", SVCFH_fmt(fhp));
if (!fhp->fh_dentry) {
- __u32 *datap=NULL;
- __u32 tfh[3]; /* filehandle fragment for oldstyle filehandles */
+ struct fid *fid = NULL, sfid;
int fileid_type;
int data_left = fh->fh_size/4;
@@ -128,7 +127,6 @@ fh_verify(struct svc_rqst *rqstp, struct svc_fh *fhp, int type, int access)
if (fh->fh_version == 1) {
int len;
- datap = fh->fh_auth;
if (--data_left<0) goto out;
switch (fh->fh_auth_type) {
case 0: break;
@@ -144,9 +142,11 @@ fh_verify(struct svc_rqst *rqstp, struct svc_fh *fhp, int type, int access)
fh->fh_fsid[1] = fh->fh_fsid[2];
}
if ((data_left -= len)<0) goto out;
- exp = rqst_exp_find(rqstp, fh->fh_fsid_type, datap);
- datap += len;
+ exp = rqst_exp_find(rqstp, fh->fh_fsid_type,
+ fh->fh_auth);
+ fid = (struct fid *)(fh->fh_auth + len);
} else {
+ __u32 tfh[2];
dev_t xdev;
ino_t xino;
if (fh->fh_size != NFS_FHSIZE)
@@ -190,22 +190,22 @@ fh_verify(struct svc_rqst *rqstp, struct svc_fh *fhp, int type, int access)
error = nfserr_badhandle;
if (fh->fh_version != 1) {
- tfh[0] = fh->ofh_ino;
- tfh[1] = fh->ofh_generation;
- tfh[2] = fh->ofh_dirino;
- datap = tfh;
+ sfid.i32.ino = fh->ofh_ino;
+ sfid.i32.gen = fh->ofh_generation;
+ sfid.i32.parent_ino = fh->ofh_dirino;
+ fid = &sfid;
data_left = 3;
if (fh->ofh_dirino == 0)
- fileid_type = 1;
+ fileid_type = FILEID_INO32_GEN;
else
- fileid_type = 2;
+ fileid_type = FILEID_INO32_GEN_PARENT;
} else
fileid_type = fh->fh_fileid_type;
- if (fileid_type == 0)
+ if (fileid_type == FILEID_ROOT)
dentry = dget(exp->ex_dentry);
else {
- dentry = exportfs_decode_fh(exp->ex_mnt, datap,
+ dentry = exportfs_decode_fh(exp->ex_mnt, fid,
data_left, fileid_type,
nfsd_acceptable, exp);
}
@@ -286,16 +286,21 @@ out:
* an inode. In this case a call to fh_update should be made
* before the fh goes out on the wire ...
*/
-static inline int _fh_update(struct dentry *dentry, struct svc_export *exp,
- __u32 *datap, int *maxsize)
+static void _fh_update(struct svc_fh *fhp, struct svc_export *exp,
+ struct dentry *dentry)
{
- if (dentry == exp->ex_dentry) {
- *maxsize = 0;
- return 0;
- }
+ if (dentry != exp->ex_dentry) {
+ struct fid *fid = (struct fid *)
+ (fhp->fh_handle.fh_auth + fhp->fh_handle.fh_size/4 - 1);
+ int maxsize = (fhp->fh_maxsize - fhp->fh_handle.fh_size)/4;
+ int subtreecheck = !(exp->ex_flags & NFSEXP_NOSUBTREECHECK);
- return exportfs_encode_fh(dentry, datap, maxsize,
- !(exp->ex_flags & NFSEXP_NOSUBTREECHECK));
+ fhp->fh_handle.fh_fileid_type =
+ exportfs_encode_fh(dentry, fid, &maxsize, subtreecheck);
+ fhp->fh_handle.fh_size += maxsize * 4;
+ } else {
+ fhp->fh_handle.fh_fileid_type = FILEID_ROOT;
+ }
}
/*
@@ -457,12 +462,8 @@ fh_compose(struct svc_fh *fhp, struct svc_export *exp, struct dentry *dentry,
datap += len/4;
fhp->fh_handle.fh_size = 4 + len;
- if (inode) {
- int size = (fhp->fh_maxsize-len-4)/4;
- fhp->fh_handle.fh_fileid_type =
- _fh_update(dentry, exp, datap, &size);
- fhp->fh_handle.fh_size += size*4;
- }
+ if (inode)
+ _fh_update(fhp, exp, dentry);
if (fhp->fh_handle.fh_fileid_type == 255)
return nfserr_opnotsupp;
}
@@ -479,7 +480,6 @@ __be32
fh_update(struct svc_fh *fhp)
{
struct dentry *dentry;
- __u32 *datap;
if (!fhp->fh_dentry)
goto out_bad;
@@ -490,15 +490,10 @@ fh_update(struct svc_fh *fhp)
if (fhp->fh_handle.fh_version != 1) {
_fh_update_old(dentry, fhp->fh_export, &fhp->fh_handle);
} else {
- int size;
- if (fhp->fh_handle.fh_fileid_type != 0)
+ if (fhp->fh_handle.fh_fileid_type != FILEID_ROOT)
goto out;
- datap = fhp->fh_handle.fh_auth+
- fhp->fh_handle.fh_size/4 -1;
- size = (fhp->fh_maxsize - fhp->fh_handle.fh_size)/4;
- fhp->fh_handle.fh_fileid_type =
- _fh_update(dentry, fhp->fh_export, datap, &size);
- fhp->fh_handle.fh_size += size*4;
+
+ _fh_update(fhp, fhp->fh_export, dentry);
if (fhp->fh_handle.fh_fileid_type == 255)
return nfserr_opnotsupp;
}