* ... and again Southern-Winter 2001 to support export_operations
*/
-#include <linux/sched.h>
#include <linux/slab.h>
#include <linux/smp_lock.h>
#include <linux/fs.h>
#include <linux/mount.h>
#include <asm/pgtable.h>
+#include <linux/sunrpc/clnt.h>
#include <linux/sunrpc/svc.h>
#include <linux/nfsd/nfsd.h>
#define NFSDDBG_FACILITY NFSDDBG_FH
-#define NFSD_PARANOIA 1
-/* #define NFSD_DEBUG_VERBOSE 1 */
static int nfsd_nr_verified;
* comment in the NFSv3 spec says this is incorrect (implementation notes for
* the write call).
*/
-static inline int
+static inline __be32
nfsd_mode_check(struct svc_rqst *rqstp, umode_t mode, int type)
{
/* Type can be negative when creating hardlinks - not to a dir */
* 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.
*/
-u32
+__be32
fh_verify(struct svc_rqst *rqstp, struct svc_fh *fhp, int type, int access)
{
struct knfsd_fh *fh = &fhp->fh_handle;
struct svc_export *exp = NULL;
struct dentry *dentry;
- u32 error = 0;
+ __be32 error = 0;
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 */
}
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];
}
/* 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);
}
- error = nfserr_dropit;
- if (IS_ERR(exp) && PTR_ERR(exp) == -EAGAIN)
+ if (IS_ERR(exp) && (PTR_ERR(exp) == -EAGAIN
+ || PTR_ERR(exp) == -ETIMEDOUT)) {
+ error = nfserrno(PTR_ERR(exp));
goto out;
+ }
error = nfserr_stale;
if (!exp || IS_ERR(exp))
/* 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 (%u.%u.%u.%u:%d)!\n",
- NIPQUAD(rqstp->rq_addr.sin_addr.s_addr),
- ntohs(rqstp->rq_addr.sin_port));
+ "nfsd: request from insecure port %s!\n",
+ svc_print_addr(rqstp, buf, sizeof(buf)));
goto out;
}
fileid_type = 2;
} else
fileid_type = fh->fh_fileid_type;
-
+
if (fileid_type == 0)
dentry = dget(exp->ex_dentry);
else {
error = nfserrno(PTR_ERR(dentry));
goto out;
}
-#ifdef NFSD_PARANOIA
+
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);
}
-#endif
fhp->fh_dentry = dentry;
fhp->fh_export = exp;
/* Finally, check access permissions. */
error = nfsd_permission(exp, dentry, access);
-#ifdef NFSD_PARANOIA_EXTREME
if (error) {
- printk("fh_verify: %s/%s permission failure, acc=%x, error=%d\n",
- dentry->d_parent->d_name.name, dentry->d_name.name, access, (error >> 24));
+ dprintk("fh_verify: %s/%s permission failure, "
+ "acc=%x, error=%d\n",
+ dentry->d_parent->d_name.name,
+ dentry->d_name.name,
+ access, ntohl(error));
}
-#endif
out:
if (exp && !IS_ERR(exp))
exp_put(exp);
__u32 *datap, int *maxsize)
{
struct export_operations *nop = exp->ex_mnt->mnt_sb->s_export_op;
-
+
if (dentry == exp->ex_dentry) {
*maxsize = 0;
return 0;
fh->ofh_dirino = 0;
}
-int
-fh_compose(struct svc_fh *fhp, struct svc_export *exp, struct dentry *dentry, struct svc_fh *ref_fh)
+__be32
+fh_compose(struct svc_fh *fhp, struct svc_export *exp, struct dentry *dentry,
+ struct svc_fh *ref_fh)
{
/* ref_fh is a reference file handle.
* if it is non-null and for the same filesystem, then we should compose
*
*/
- u8 ref_fh_version = 0;
- u8 ref_fh_fsid_type = 0;
+ u8 version = 1;
+ u8 fsid_type = 0;
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);
dprintk("nfsd: fh_compose(exp %02x:%02x/%ld %s/%s, ino=%ld)\n",
MAJOR(ex_dev), MINOR(ex_dev),
parent->d_name.name, dentry->d_name.name,
(inode ? inode->i_ino : 0));
+ /* Choose filehandle version and fsid type based on
+ * the reference filehandle (if it is in the same export)
+ * or the export options.
+ */
if (ref_fh && ref_fh->fh_export == exp) {
- ref_fh_version = ref_fh->fh_handle.fh_version;
- if (ref_fh_version == 0xca)
- ref_fh_fsid_type = 0;
+ version = ref_fh->fh_handle.fh_version;
+ if (version == 0xca)
+ fsid_type = FSID_DEV;
else
- ref_fh_fsid_type = ref_fh->fh_handle.fh_fsid_type;
- if (ref_fh_fsid_type > 3)
- ref_fh_fsid_type = 0;
-
- /* make sure ref_fh type works for given export */
- if (ref_fh_fsid_type == 1 &&
- !(exp->ex_flags & NFSEXP_FSID)) {
- /* if we don't have an fsid, we cannot provide one... */
- ref_fh_fsid_type = 0;
+ 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)
- ref_fh_fsid_type = 1;
-
- if (!old_valid_dev(ex_dev) && ref_fh_fsid_type == 0) {
+ fsid_type = FSID_NUM;
+ else if (!old_valid_dev(ex_dev))
/* for newer device numbers, we must use a newer fsid format */
- ref_fh_version = 1;
- ref_fh_fsid_type = 3;
- }
- if (old_valid_dev(ex_dev) &&
- (ref_fh_fsid_type == 2 || ref_fh_fsid_type == 3))
- /* must use type1 for smaller device numbers */
- ref_fh_fsid_type = 0;
+ fsid_type = FSID_ENCODE_DEV;
+ else
+ fsid_type = FSID_DEV;
if (ref_fh == fhp)
fh_put(ref_fh);
if (fhp->fh_locked || fhp->fh_dentry) {
printk(KERN_ERR "fh_compose: fh %s/%s not initialized!\n",
- parent->d_name.name, dentry->d_name.name);
+ parent->d_name.name, dentry->d_name.name);
}
if (fhp->fh_maxsize < NFS_FHSIZE)
printk(KERN_ERR "fh_compose: called with maxsize %d! %s/%s\n",
- fhp->fh_maxsize, parent->d_name.name, dentry->d_name.name);
+ fhp->fh_maxsize,
+ parent->d_name.name, dentry->d_name.name);
fhp->fh_dentry = dget(dentry); /* our internal copy */
fhp->fh_export = exp;
cache_get(&exp->h);
- if (ref_fh_version == 0xca) {
+ if (version == 0xca) {
/* old style filehandle please */
memset(&fhp->fh_handle.fh_base, 0, NFS_FHSIZE);
fhp->fh_handle.fh_size = NFS_FHSIZE;
fhp->fh_handle.ofh_dcookie = 0xfeebbaca;
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);
+ fhp->fh_handle.ofh_xino =
+ ino_t_to_u32(exp->ex_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);
fhp->fh_handle.fh_version = 1;
fhp->fh_handle.fh_auth_type = 0;
datap = fhp->fh_handle.fh_auth+0;
- fhp->fh_handle.fh_fsid_type = ref_fh_fsid_type;
- switch (ref_fh_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;
- }
- len = key_len(ref_fh_fsid_type);
+ fhp->fh_handle.fh_fsid_type = fsid_type;
+ 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;
* Update file handle information after changing a dentry.
* This is only called by nfsd_create, nfsd_create_v3 and nfsd_proc_create
*/
-int
+__be32
fh_update(struct svc_fh *fhp)
{
struct dentry *dentry;
__u32 *datap;
-
+
if (!fhp->fh_dentry)
goto out_bad;
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;
+ }
+}
git.samba.org / sfrench / cifs-2.6.git / blobdiff