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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.c88
1 files changed, 46 insertions, 42 deletions
diff --git a/fs/nfsd/nfsfh.c b/fs/nfsd/nfsfh.c
index 12c5e7421374..286bc4d356f4 100644
--- a/fs/nfsd/nfsfh.c
+++ b/fs/nfsd/nfsfh.c
@@ -119,9 +119,6 @@ fh_verify(struct svc_rqst *rqstp, struct svc_fh *fhp, int type, int access)
dprintk("nfsd: fh_verify(%s)\n", SVCFH_fmt(fhp));
- /* keep this filehandle for possible reference when encoding attributes */
- rqstp->rq_reffh = fh;
-
if (!fhp->fh_dentry) {
__u32 *datap=NULL;
__u32 tfh[3]; /* filehandle fragment for oldstyle filehandles */
@@ -146,10 +143,10 @@ fh_verify(struct svc_rqst *rqstp, struct svc_fh *fhp, int type, int access)
}
len = key_len(fh->fh_fsid_type) / 4;
if (len == 0) goto out;
- if (fh->fh_fsid_type == 2) {
+ if (fh->fh_fsid_type == FSID_MAJOR_MINOR) {
/* deprecated, convert to type 3 */
- len = 3;
- fh->fh_fsid_type = 3;
+ len = key_len(FSID_ENCODE_DEV)/4;
+ fh->fh_fsid_type = FSID_ENCODE_DEV;
fh->fh_fsid[0] = new_encode_dev(MKDEV(ntohl(fh->fh_fsid[0]), ntohl(fh->fh_fsid[1])));
fh->fh_fsid[1] = fh->fh_fsid[2];
}
@@ -164,8 +161,9 @@ fh_verify(struct svc_rqst *rqstp, struct svc_fh *fhp, int type, int access)
/* assume old filehandle format */
xdev = old_decode_dev(fh->ofh_xdev);
xino = u32_to_ino_t(fh->ofh_xino);
- mk_fsid_v0(tfh, xdev, xino);
- exp = exp_find(rqstp->rq_client, 0, tfh, &rqstp->rq_chandle);
+ mk_fsid(FSID_DEV, tfh, xdev, xino, 0, NULL);
+ exp = exp_find(rqstp->rq_client, FSID_DEV, tfh,
+ &rqstp->rq_chandle);
}
if (IS_ERR(exp) && (PTR_ERR(exp) == -EAGAIN
@@ -334,6 +332,7 @@ fh_compose(struct svc_fh *fhp, struct svc_export *exp, struct dentry *dentry,
struct dentry *parent = dentry->d_parent;
__u32 *datap;
dev_t ex_dev = exp->ex_dentry->d_inode->i_sb->s_dev;
+ int root_export = (exp->ex_dentry == exp->ex_dentry->d_sb->s_root);
dprintk("nfsd: fh_compose(exp %02x:%02x/%ld %s/%s, ino=%ld)\n",
MAJOR(ex_dev), MINOR(ex_dev),
@@ -348,19 +347,31 @@ fh_compose(struct svc_fh *fhp, struct svc_export *exp, struct dentry *dentry,
if (ref_fh && ref_fh->fh_export == exp) {
version = ref_fh->fh_handle.fh_version;
if (version == 0xca)
- fsid_type = 0;
+ fsid_type = FSID_DEV;
else
fsid_type = ref_fh->fh_handle.fh_fsid_type;
/* We know this version/type works for this export
* so there is no need for further checks.
*/
+ } else if (exp->ex_uuid) {
+ if (fhp->fh_maxsize >= 64) {
+ if (root_export)
+ fsid_type = FSID_UUID16;
+ else
+ fsid_type = FSID_UUID16_INUM;
+ } else {
+ if (root_export)
+ fsid_type = FSID_UUID8;
+ else
+ fsid_type = FSID_UUID4_INUM;
+ }
} else if (exp->ex_flags & NFSEXP_FSID)
- fsid_type = 1;
+ fsid_type = FSID_NUM;
else if (!old_valid_dev(ex_dev))
/* for newer device numbers, we must use a newer fsid format */
- fsid_type = 3;
+ fsid_type = FSID_ENCODE_DEV;
else
- fsid_type = 0;
+ fsid_type = FSID_DEV;
if (ref_fh == fhp)
fh_put(ref_fh);
@@ -396,36 +407,10 @@ fh_compose(struct svc_fh *fhp, struct svc_export *exp, struct dentry *dentry,
fhp->fh_handle.fh_auth_type = 0;
datap = fhp->fh_handle.fh_auth+0;
fhp->fh_handle.fh_fsid_type = fsid_type;
- switch (fsid_type) {
- case 0:
- /*
- * fsid_type 0:
- * 2byte major, 2byte minor, 4byte inode
- */
- mk_fsid_v0(datap, ex_dev,
- exp->ex_dentry->d_inode->i_ino);
- break;
- case 1:
- /* fsid_type 1 == 4 bytes filesystem id */
- mk_fsid_v1(datap, exp->ex_fsid);
- break;
- case 2:
- /*
- * fsid_type 2:
- * 4byte major, 4byte minor, 4byte inode
- */
- mk_fsid_v2(datap, ex_dev,
- exp->ex_dentry->d_inode->i_ino);
- break;
- case 3:
- /*
- * fsid_type 3:
- * 4byte devicenumber, 4byte inode
- */
- mk_fsid_v3(datap, ex_dev,
- exp->ex_dentry->d_inode->i_ino);
- break;
- }
+ mk_fsid(fsid_type, datap, ex_dev,
+ exp->ex_dentry->d_inode->i_ino,
+ exp->ex_fsid, exp->ex_uuid);
+
len = key_len(fsid_type);
datap += len/4;
fhp->fh_handle.fh_size = 4 + len;
@@ -530,3 +515,22 @@ char * SVCFH_fmt(struct svc_fh *fhp)
fh->fh_base.fh_pad[5]);
return buf;
}
+
+enum fsid_source fsid_source(struct svc_fh *fhp)
+{
+ if (fhp->fh_handle.fh_version != 1)
+ return FSIDSOURCE_DEV;
+ switch(fhp->fh_handle.fh_fsid_type) {
+ case FSID_DEV:
+ case FSID_ENCODE_DEV:
+ case FSID_MAJOR_MINOR:
+ return FSIDSOURCE_DEV;
+ case FSID_NUM:
+ return FSIDSOURCE_FSID;
+ default:
+ if (fhp->fh_export->ex_flags & NFSEXP_FSID)
+ return FSIDSOURCE_FSID;
+ else
+ return FSIDSOURCE_UUID;
+ }
+}