#include <linux/sunrpc/clnt.h>
#include <linux/sunrpc/svc.h>
+#include <linux/sunrpc/svcauth_gss.h>
#include <linux/nfsd/nfsd.h>
+#include "auth.h"
#define NFSDDBG_FACILITY NFSDDBG_FH
-static int nfsd_nr_verified;
-static int nfsd_nr_put;
-
-extern struct export_operations export_op_default;
-
-#define CALL(ops,fun) ((ops->fun)?(ops->fun):export_op_default.fun)
-
/*
* our acceptability function.
* if NOSUBTREECHECK, accept anything
return 1;
tdentry = dget(dentry);
- while (tdentry != exp->ex_dentry && ! IS_ROOT(tdentry)) {
+ while (tdentry != exp->ex_path.dentry && !IS_ROOT(tdentry)) {
/* make sure parents give x permission to user */
int err;
parent = dget_parent(tdentry);
- err = permission(parent->d_inode, MAY_EXEC, NULL);
+ err = inode_permission(parent->d_inode, MAY_EXEC);
if (err < 0) {
dput(parent);
break;
dput(tdentry);
tdentry = parent;
}
- if (tdentry != exp->ex_dentry)
+ if (tdentry != exp->ex_path.dentry)
dprintk("nfsd_acceptable failed at %p %s\n", tdentry, tdentry->d_name.name);
- rv = (tdentry == exp->ex_dentry);
+ rv = (tdentry == exp->ex_path.dentry);
dput(tdentry);
return rv;
}
return 0;
}
+static __be32 nfsd_setuser_and_check_port(struct svc_rqst *rqstp,
+ struct svc_export *exp)
+{
+ /* Check if the request originated from a secure port. */
+ if (!rqstp->rq_secure && EX_SECURE(exp)) {
+ RPC_IFDEBUG(char buf[RPC_MAX_ADDRBUFLEN]);
+ dprintk(KERN_WARNING
+ "nfsd: request from insecure port %s!\n",
+ svc_print_addr(rqstp, buf, sizeof(buf)));
+ return nfserr_perm;
+ }
+
+ /* Set user creds for this exportpoint */
+ return nfserrno(nfsd_setuser(rqstp, exp));
+}
+
/*
- * Perform sanity checks on the dentry in a client's file handle.
- *
- * Note that the file handle dentry may need to be freed even after
- * an error return.
- *
- * This is only called at the start of an nfsproc call, so fhp points to
- * a svc_fh which is all 0 except for the over-the-wire file handle.
+ * Use the given filehandle to look up the corresponding export and
+ * dentry. On success, the results are used to set fh_export and
+ * fh_dentry.
*/
-__be32
-fh_verify(struct svc_rqst *rqstp, struct svc_fh *fhp, int type, int access)
+static __be32 nfsd_set_fh_dentry(struct svc_rqst *rqstp, struct svc_fh *fhp)
{
struct knfsd_fh *fh = &fhp->fh_handle;
- struct svc_export *exp = NULL;
- struct dentry *dentry;
- __be32 error = 0;
+ struct fid *fid = NULL, sfid;
+ struct svc_export *exp;
+ struct dentry *dentry;
+ int fileid_type;
+ int data_left = fh->fh_size/4;
+ __be32 error;
- dprintk("nfsd: fh_verify(%s)\n", SVCFH_fmt(fhp));
+ error = nfserr_stale;
+ if (rqstp->rq_vers > 2)
+ error = nfserr_badhandle;
+ if (rqstp->rq_vers == 4 && fh->fh_size == 0)
+ return nfserr_nofilehandle;
- if (!fhp->fh_dentry) {
- __u32 *datap=NULL;
- __u32 tfh[3]; /* filehandle fragment for oldstyle filehandles */
- int fileid_type;
- int data_left = fh->fh_size/4;
+ if (fh->fh_version == 1) {
+ int len;
- error = nfserr_stale;
- if (rqstp->rq_client == NULL)
- goto out;
- if (rqstp->rq_vers > 2)
- error = nfserr_badhandle;
- if (rqstp->rq_vers == 4 && fh->fh_size == 0)
- return nfserr_nofilehandle;
-
- 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;
- default: goto out;
- }
- len = key_len(fh->fh_fsid_type) / 4;
- if (len == 0) goto out;
- if (fh->fh_fsid_type == FSID_MAJOR_MINOR) {
- /* deprecated, convert to 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];
- }
- if ((data_left -= len)<0) goto out;
- exp = exp_find(rqstp->rq_client, fh->fh_fsid_type, datap, &rqstp->rq_chandle);
- datap += len;
- } else {
- dev_t xdev;
- ino_t xino;
- if (fh->fh_size != NFS_FHSIZE)
- goto out;
- /* assume old filehandle format */
- xdev = old_decode_dev(fh->ofh_xdev);
- xino = u32_to_ino_t(fh->ofh_xino);
- mk_fsid(FSID_DEV, tfh, xdev, xino, 0, NULL);
- exp = exp_find(rqstp->rq_client, FSID_DEV, tfh,
- &rqstp->rq_chandle);
+ if (--data_left < 0)
+ return error;
+ if (fh->fh_auth_type != 0)
+ return error;
+ len = key_len(fh->fh_fsid_type) / 4;
+ if (len == 0)
+ return error;
+ if (fh->fh_fsid_type == FSID_MAJOR_MINOR) {
+ /* deprecated, convert to 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];
}
+ data_left -= len;
+ if (data_left < 0)
+ return error;
+ 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)
+ return error;
+ /* assume old filehandle format */
+ xdev = old_decode_dev(fh->ofh_xdev);
+ xino = u32_to_ino_t(fh->ofh_xino);
+ mk_fsid(FSID_DEV, tfh, xdev, xino, 0, NULL);
+ exp = rqst_exp_find(rqstp, FSID_DEV, tfh);
+ }
- if (IS_ERR(exp) && (PTR_ERR(exp) == -EAGAIN
- || PTR_ERR(exp) == -ETIMEDOUT)) {
- error = nfserrno(PTR_ERR(exp));
+ error = nfserr_stale;
+ if (PTR_ERR(exp) == -ENOENT)
+ return error;
+
+ if (IS_ERR(exp))
+ return nfserrno(PTR_ERR(exp));
+
+ if (exp->ex_flags & NFSEXP_NOSUBTREECHECK) {
+ /* Elevate privileges so that the lack of 'r' or 'x'
+ * permission on some parent directory will
+ * not stop exportfs_decode_fh from being able
+ * to reconnect a directory into the dentry cache.
+ * The same problem can affect "SUBTREECHECK" exports,
+ * but as nfsd_acceptable depends on correct
+ * access control settings being in effect, we cannot
+ * fix that case easily.
+ */
+ struct cred *new = prepare_creds();
+ if (!new)
+ return nfserrno(-ENOMEM);
+ new->cap_effective =
+ cap_raise_nfsd_set(new->cap_effective,
+ new->cap_permitted);
+ put_cred(override_creds(new));
+ put_cred(new);
+ } else {
+ error = nfsd_setuser_and_check_port(rqstp, exp);
+ if (error)
goto out;
- }
+ }
- error = nfserr_stale;
- if (!exp || IS_ERR(exp))
- goto out;
+ /*
+ * Look up the dentry using the NFS file handle.
+ */
+ error = nfserr_stale;
+ if (rqstp->rq_vers > 2)
+ error = nfserr_badhandle;
+
+ if (fh->fh_version != 1) {
+ 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 = FILEID_INO32_GEN;
+ else
+ fileid_type = FILEID_INO32_GEN_PARENT;
+ } else
+ fileid_type = fh->fh_fileid_type;
+
+ if (fileid_type == FILEID_ROOT)
+ dentry = dget(exp->ex_path.dentry);
+ else {
+ dentry = exportfs_decode_fh(exp->ex_path.mnt, fid,
+ data_left, fileid_type,
+ nfsd_acceptable, exp);
+ }
+ if (dentry == NULL)
+ goto out;
+ if (IS_ERR(dentry)) {
+ if (PTR_ERR(dentry) != -EINVAL)
+ error = nfserrno(PTR_ERR(dentry));
+ goto out;
+ }
- /* Check if the request originated from a secure port. */
- error = nfserr_perm;
- if (!rqstp->rq_secure && EX_SECURE(exp)) {
- char buf[RPC_MAX_ADDRBUFLEN];
- printk(KERN_WARNING
- "nfsd: request from insecure port %s!\n",
- svc_print_addr(rqstp, buf, sizeof(buf)));
+ if (exp->ex_flags & NFSEXP_NOSUBTREECHECK) {
+ error = nfsd_setuser_and_check_port(rqstp, exp);
+ if (error) {
+ dput(dentry);
goto out;
}
+ }
- /* Set user creds for this exportpoint */
- error = nfserrno(nfsd_setuser(rqstp, exp));
- if (error)
- goto out;
+ if (S_ISDIR(dentry->d_inode->i_mode) &&
+ (dentry->d_flags & DCACHE_DISCONNECTED)) {
+ printk("nfsd: find_fh_dentry returned a DISCONNECTED directory: %s/%s\n",
+ dentry->d_parent->d_name.name, dentry->d_name.name);
+ }
- /*
- * Look up the dentry using the NFS file handle.
- */
- error = nfserr_stale;
- if (rqstp->rq_vers > 2)
- 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;
- data_left = 3;
- if (fh->ofh_dirino == 0)
- fileid_type = 1;
- else
- fileid_type = 2;
- } else
- fileid_type = fh->fh_fileid_type;
-
- if (fileid_type == 0)
- dentry = dget(exp->ex_dentry);
- else {
- struct export_operations *nop = exp->ex_mnt->mnt_sb->s_export_op;
- dentry = CALL(nop,decode_fh)(exp->ex_mnt->mnt_sb,
- datap, data_left,
- fileid_type,
- nfsd_acceptable, exp);
- }
- if (dentry == NULL)
- goto out;
- if (IS_ERR(dentry)) {
- if (PTR_ERR(dentry) != -EINVAL)
- error = nfserrno(PTR_ERR(dentry));
- goto out;
- }
+ fhp->fh_dentry = dentry;
+ fhp->fh_export = exp;
+ return 0;
+out:
+ exp_put(exp);
+ return error;
+}
- if (S_ISDIR(dentry->d_inode->i_mode) &&
- (dentry->d_flags & DCACHE_DISCONNECTED)) {
- printk("nfsd: find_fh_dentry returned a DISCONNECTED directory: %s/%s\n",
- dentry->d_parent->d_name.name, dentry->d_name.name);
- }
+/**
+ * fh_verify - filehandle lookup and access checking
+ * @rqstp: pointer to current rpc request
+ * @fhp: filehandle to be verified
+ * @type: expected type of object pointed to by filehandle
+ * @access: type of access needed to object
+ *
+ * Look up a dentry from the on-the-wire filehandle, check the client's
+ * access to the export, and set the current task's credentials.
+ *
+ * Regardless of success or failure of fh_verify(), fh_put() should be
+ * called on @fhp when the caller is finished with the filehandle.
+ *
+ * fh_verify() may be called multiple times on a given filehandle, for
+ * example, when processing an NFSv4 compound. The first call will look
+ * up a dentry using the on-the-wire filehandle. Subsequent calls will
+ * skip the lookup and just perform the other checks and possibly change
+ * the current task's credentials.
+ *
+ * @type specifies the type of object expected using one of the S_IF*
+ * constants defined in include/linux/stat.h. The caller may use zero
+ * to indicate that it doesn't care, or a negative integer to indicate
+ * that it expects something not of the given type.
+ *
+ * @access is formed from the NFSD_MAY_* constants defined in
+ * include/linux/nfsd/nfsd.h.
+ */
+__be32
+fh_verify(struct svc_rqst *rqstp, struct svc_fh *fhp, int type, int access)
+{
+ struct svc_export *exp;
+ struct dentry *dentry;
+ __be32 error;
+
+ dprintk("nfsd: fh_verify(%s)\n", SVCFH_fmt(fhp));
- fhp->fh_dentry = dentry;
- fhp->fh_export = exp;
- nfsd_nr_verified++;
+ if (!fhp->fh_dentry) {
+ error = nfsd_set_fh_dentry(rqstp, fhp);
+ if (error)
+ goto out;
+ dentry = fhp->fh_dentry;
+ exp = fhp->fh_export;
} else {
- /* just rechecking permissions
- * (e.g. nfsproc_create calls fh_verify, then nfsd_create does as well)
+ /*
+ * just rechecking permissions
+ * (e.g. nfsproc_create calls fh_verify, then nfsd_create
+ * does as well)
*/
dprintk("nfsd: fh_verify - just checking\n");
dentry = fhp->fh_dentry;
exp = fhp->fh_export;
- /* Set user creds for this exportpoint; necessary even
+ /*
+ * Set user creds for this exportpoint; necessary even
* in the "just checking" case because this may be a
* filehandle that was created by fh_compose, and that
* is about to be used in another nfsv4 compound
- * operation */
- error = nfserrno(nfsd_setuser(rqstp, exp));
+ * operation.
+ */
+ error = nfsd_setuser_and_check_port(rqstp, exp);
if (error)
goto out;
}
- cache_get(&exp->h);
-
error = nfsd_mode_check(rqstp, dentry->d_inode->i_mode, type);
if (error)
goto out;
+ /*
+ * pseudoflavor restrictions are not enforced on NLM,
+ * which clients virtually always use auth_sys for,
+ * even while using RPCSEC_GSS for NFS.
+ */
+ if (access & NFSD_MAY_LOCK)
+ goto skip_pseudoflavor_check;
+ /*
+ * Clients may expect to be able to use auth_sys during mount,
+ * even if they use gss for everything else; see section 2.3.2
+ * of rfc 2623.
+ */
+ if (access & NFSD_MAY_BYPASS_GSS_ON_ROOT
+ && exp->ex_path.dentry == dentry)
+ goto skip_pseudoflavor_check;
+
+ error = check_nfsd_access(exp, rqstp);
+ if (error)
+ goto out;
+
+skip_pseudoflavor_check:
/* Finally, check access permissions. */
- error = nfsd_permission(exp, dentry, access);
+ error = nfsd_permission(rqstp, exp, dentry, access);
if (error) {
dprintk("fh_verify: %s/%s permission failure, "
access, ntohl(error));
}
out:
- if (exp && !IS_ERR(exp))
- exp_put(exp);
if (error == nfserr_stale)
nfsdstats.fh_stale++;
return error;
* 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)
{
- struct export_operations *nop = exp->ex_mnt->mnt_sb->s_export_op;
+ if (dentry != exp->ex_path.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);
- if (dentry == exp->ex_dentry) {
- *maxsize = 0;
- return 0;
+ 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;
}
-
- return CALL(nop,encode_fh)(dentry, datap, maxsize,
- !(exp->ex_flags&NFSEXP_NOSUBTREECHECK));
}
/*
fh->ofh_dirino = 0;
}
+static bool is_root_export(struct svc_export *exp)
+{
+ return exp->ex_path.dentry == exp->ex_path.dentry->d_sb->s_root;
+}
+
+static struct super_block *exp_sb(struct svc_export *exp)
+{
+ return exp->ex_path.dentry->d_inode->i_sb;
+}
+
+static bool fsid_type_ok_for_exp(u8 fsid_type, struct svc_export *exp)
+{
+ switch (fsid_type) {
+ case FSID_DEV:
+ if (!old_valid_dev(exp_sb(exp)->s_dev))
+ return 0;
+ /* FALL THROUGH */
+ case FSID_MAJOR_MINOR:
+ case FSID_ENCODE_DEV:
+ return exp_sb(exp)->s_type->fs_flags & FS_REQUIRES_DEV;
+ case FSID_NUM:
+ return exp->ex_flags & NFSEXP_FSID;
+ case FSID_UUID8:
+ case FSID_UUID16:
+ if (!is_root_export(exp))
+ return 0;
+ /* fall through */
+ case FSID_UUID4_INUM:
+ case FSID_UUID16_INUM:
+ return exp->ex_uuid != NULL;
+ }
+ return 1;
+}
+
__be32
fh_compose(struct svc_fh *fhp, struct svc_export *exp, struct dentry *dentry,
struct svc_fh *ref_fh)
struct inode * inode = dentry->d_inode;
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);
+ dev_t ex_dev = exp_sb(exp)->s_dev;
dprintk("nfsd: fh_compose(exp %02x:%02x/%ld %s/%s, ino=%ld)\n",
MAJOR(ex_dev), MINOR(ex_dev),
- (long) exp->ex_dentry->d_inode->i_ino,
+ (long) exp->ex_path.dentry->d_inode->i_ino,
parent->d_name.name, dentry->d_name.name,
(inode ? inode->i_ino : 0));
goto retry;
}
- /* Need to check that this type works for this
- * export point. As the fsid -> filesystem mapping
- * was guided by user-space, there is no guarantee
- * that the filesystem actually supports that fsid
- * type. If it doesn't we loop around again without
- * ref_fh set.
+ /*
+ * As the fsid -> filesystem mapping was guided by
+ * user-space, there is no guarantee that the filesystem
+ * actually supports that fsid type. If it doesn't we
+ * loop around again without ref_fh set.
*/
- switch(fsid_type) {
- case FSID_DEV:
- if (!old_valid_dev(ex_dev))
- goto retry;
- /* FALL THROUGH */
- case FSID_MAJOR_MINOR:
- case FSID_ENCODE_DEV:
- if (!(exp->ex_dentry->d_inode->i_sb->s_type->fs_flags
- & FS_REQUIRES_DEV))
- goto retry;
- break;
- case FSID_NUM:
- if (! (exp->ex_flags & NFSEXP_FSID))
- goto retry;
- break;
- case FSID_UUID8:
- case FSID_UUID16:
- if (!root_export)
- goto retry;
- /* fall through */
- case FSID_UUID4_INUM:
- case FSID_UUID16_INUM:
- if (exp->ex_uuid == NULL)
- goto retry;
- break;
- }
+ if (!fsid_type_ok_for_exp(fsid_type, exp))
+ goto retry;
+ } else if (exp->ex_flags & NFSEXP_FSID) {
+ fsid_type = FSID_NUM;
} else if (exp->ex_uuid) {
if (fhp->fh_maxsize >= 64) {
- if (root_export)
+ if (is_root_export(exp))
fsid_type = FSID_UUID16;
else
fsid_type = FSID_UUID16_INUM;
} else {
- if (root_export)
+ if (is_root_export(exp))
fsid_type = FSID_UUID8;
else
fsid_type = FSID_UUID4_INUM;
}
- } else if (exp->ex_flags & NFSEXP_FSID)
- fsid_type = FSID_NUM;
- else if (!old_valid_dev(ex_dev))
+ } else if (!old_valid_dev(ex_dev))
/* for newer device numbers, we must use a newer fsid format */
fsid_type = FSID_ENCODE_DEV;
else
fhp->fh_handle.ofh_dev = old_encode_dev(ex_dev);
fhp->fh_handle.ofh_xdev = fhp->fh_handle.ofh_dev;
fhp->fh_handle.ofh_xino =
- ino_t_to_u32(exp->ex_dentry->d_inode->i_ino);
+ ino_t_to_u32(exp->ex_path.dentry->d_inode->i_ino);
fhp->fh_handle.ofh_dirino = ino_t_to_u32(parent_ino(dentry));
if (inode)
_fh_update_old(dentry, exp, &fhp->fh_handle);
datap = fhp->fh_handle.fh_auth+0;
fhp->fh_handle.fh_fsid_type = fsid_type;
mk_fsid(fsid_type, datap, ex_dev,
- exp->ex_dentry->d_inode->i_ino,
+ exp->ex_path.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;
- 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;
}
- nfsd_nr_verified++;
return 0;
}
fh_update(struct svc_fh *fhp)
{
struct dentry *dentry;
- __u32 *datap;
if (!fhp->fh_dentry)
goto out_bad;
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;
}
fhp->fh_pre_saved = 0;
fhp->fh_post_saved = 0;
#endif
- nfsd_nr_put++;
}
if (exp) {
cache_put(&exp->h, &svc_export_cache);
case FSID_DEV:
case FSID_ENCODE_DEV:
case FSID_MAJOR_MINOR:
- return FSIDSOURCE_DEV;
+ if (exp_sb(fhp->fh_export)->s_type->fs_flags & FS_REQUIRES_DEV)
+ return FSIDSOURCE_DEV;
+ break;
case FSID_NUM:
- return FSIDSOURCE_FSID;
- default:
if (fhp->fh_export->ex_flags & NFSEXP_FSID)
return FSIDSOURCE_FSID;
- else
- return FSIDSOURCE_UUID;
+ break;
+ default:
+ break;
}
+ /* either a UUID type filehandle, or the filehandle doesn't
+ * match the export.
+ */
+ if (fhp->fh_export->ex_flags & NFSEXP_FSID)
+ return FSIDSOURCE_FSID;
+ if (fhp->fh_export->ex_uuid)
+ return FSIDSOURCE_UUID;
+ return FSIDSOURCE_DEV;
}
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff