515 lines
12 KiB
C
515 lines
12 KiB
C
/* $NetBSD: smbfs_vfsops.c,v 1.44 2004/06/05 07:36:25 jdolecek Exp $ */
|
|
|
|
/*
|
|
* Copyright (c) 2000-2001, Boris Popov
|
|
* All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
* 3. All advertising materials mentioning features or use of this software
|
|
* must display the following acknowledgement:
|
|
* This product includes software developed by Boris Popov.
|
|
* 4. Neither the name of the author nor the names of any co-contributors
|
|
* may be used to endorse or promote products derived from this software
|
|
* without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
|
|
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
|
|
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
* SUCH DAMAGE.
|
|
*
|
|
* FreeBSD: src/sys/fs/smbfs/smbfs_vfsops.c,v 1.5 2001/12/13 13:08:34 sheldonh Exp
|
|
*/
|
|
|
|
#include <sys/cdefs.h>
|
|
__KERNEL_RCSID(0, "$NetBSD: smbfs_vfsops.c,v 1.44 2004/06/05 07:36:25 jdolecek Exp $");
|
|
|
|
#ifdef _KERNEL_OPT
|
|
#include "opt_quota.h"
|
|
#endif
|
|
|
|
#include <sys/param.h>
|
|
#include <sys/systm.h>
|
|
#include <sys/proc.h>
|
|
#include <sys/buf.h>
|
|
#include <sys/kernel.h>
|
|
#include <sys/dirent.h>
|
|
#include <sys/sysctl.h>
|
|
#include <sys/vnode.h>
|
|
#include <sys/mount.h>
|
|
#include <sys/stat.h>
|
|
#include <sys/malloc.h>
|
|
|
|
|
|
#include <netsmb/smb.h>
|
|
#include <netsmb/smb_conn.h>
|
|
#include <netsmb/smb_subr.h>
|
|
#include <netsmb/smb_dev.h>
|
|
|
|
#include <fs/smbfs/smbfs.h>
|
|
#include <fs/smbfs/smbfs_node.h>
|
|
#include <fs/smbfs/smbfs_subr.h>
|
|
|
|
#ifndef __NetBSD__
|
|
SYSCTL_NODE(_vfs, OID_AUTO, smbfs, CTLFLAG_RW, 0, "SMB/CIFS file system");
|
|
SYSCTL_INT(_vfs_smbfs, OID_AUTO, version, CTLFLAG_RD, &smbfs_version, 0, "");
|
|
#else
|
|
SYSCTL_SETUP(sysctl_vfs_samba_setup, "sysctl vfs.samba subtree setup")
|
|
{
|
|
struct sysctlnode *smb = NULL;
|
|
|
|
sysctl_createv(clog, 0, NULL, NULL,
|
|
CTLFLAG_PERMANENT,
|
|
CTLTYPE_NODE, "vfs", NULL,
|
|
NULL, 0, NULL, 0,
|
|
CTL_VFS, CTL_EOL);
|
|
sysctl_createv(clog, 0, NULL, &smb,
|
|
CTLFLAG_PERMANENT,
|
|
CTLTYPE_NODE, "samba",
|
|
SYSCTL_DESCR("SMB/CIFS remote file system"),
|
|
NULL, 0, NULL, 0,
|
|
CTL_VFS, CTL_CREATE, CTL_EOL);
|
|
|
|
if (smb != NULL)
|
|
sysctl_createv(clog, 0, &smb, NULL,
|
|
CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE,
|
|
CTLTYPE_INT, "version",
|
|
SYSCTL_DESCR("smbfs version"),
|
|
NULL, SMBFS_VERSION, NULL, 0,
|
|
CTL_CREATE, CTL_EOL);
|
|
}
|
|
#endif
|
|
|
|
static MALLOC_DEFINE(M_SMBFSHASH, "SMBFS hash", "SMBFS hash table");
|
|
|
|
int smbfs_mount(struct mount *, const char *, void *,
|
|
struct nameidata *, struct proc *);
|
|
int smbfs_quotactl(struct mount *, int, uid_t, void *, struct proc *);
|
|
int smbfs_root(struct mount *, struct vnode **);
|
|
static int smbfs_setroot(struct mount *);
|
|
int smbfs_start(struct mount *, int, struct proc *);
|
|
int smbfs_statvfs(struct mount *, struct statvfs *, struct proc *);
|
|
int smbfs_sync(struct mount *, int, struct ucred *, struct proc *);
|
|
int smbfs_unmount(struct mount *, int, struct proc *);
|
|
void smbfs_init(void);
|
|
void smbfs_reinit(void);
|
|
void smbfs_done(void);
|
|
|
|
int smbfs_vget(struct mount *mp, ino_t ino, struct vnode **vpp);
|
|
int smbfs_fhtovp(struct mount *, struct fid *, struct vnode **);
|
|
int smbfs_vptofh(struct vnode *, struct fid *);
|
|
|
|
POOL_INIT(smbfs_node_pool, sizeof(struct smbnode), 0, 0, 0, "smbfsnopl",
|
|
&pool_allocator_nointr);
|
|
extern struct vnodeopv_desc smbfs_vnodeop_opv_desc;
|
|
|
|
static const struct vnodeopv_desc *smbfs_vnodeopv_descs[] = {
|
|
&smbfs_vnodeop_opv_desc,
|
|
NULL,
|
|
};
|
|
|
|
struct vfsops smbfs_vfsops = {
|
|
MOUNT_SMBFS,
|
|
smbfs_mount,
|
|
smbfs_start,
|
|
smbfs_unmount,
|
|
smbfs_root,
|
|
smbfs_quotactl,
|
|
smbfs_statvfs,
|
|
smbfs_sync,
|
|
smbfs_vget,
|
|
smbfs_fhtovp,
|
|
smbfs_vptofh,
|
|
smbfs_init,
|
|
smbfs_reinit,
|
|
smbfs_done,
|
|
NULL,
|
|
(int (*) (void)) eopnotsupp, /* mountroot */
|
|
(int (*) (struct mount *, struct mbuf *, int *,
|
|
struct ucred **)) eopnotsupp, /* checkexp */
|
|
(int (*)(struct mount *, struct vnode *, struct timespec *)) eopnotsupp,
|
|
smbfs_vnodeopv_descs,
|
|
};
|
|
|
|
int
|
|
smbfs_mount(struct mount *mp, const char *path, void *data,
|
|
struct nameidata *ndp, struct proc *p)
|
|
{
|
|
struct smbfs_args args; /* will hold data from mount request */
|
|
struct smbmount *smp = NULL;
|
|
struct smb_vc *vcp;
|
|
struct smb_share *ssp = NULL;
|
|
struct smb_cred scred;
|
|
int error;
|
|
|
|
if (mp->mnt_flag & MNT_GETARGS) {
|
|
smp = VFSTOSMBFS(mp);
|
|
if (smp == NULL)
|
|
return EIO;
|
|
return copyout(&smp->sm_args, data, sizeof(smp->sm_args));
|
|
}
|
|
|
|
if (mp->mnt_flag & MNT_UPDATE)
|
|
return EOPNOTSUPP;
|
|
|
|
error = copyin(data, &args, sizeof(struct smbfs_args));
|
|
if (error)
|
|
return error;
|
|
|
|
if (args.version != SMBFS_VERSION) {
|
|
SMBVDEBUG("mount version mismatch: kernel=%d, mount=%d\n",
|
|
SMBFS_VERSION, args.version);
|
|
return EINVAL;
|
|
}
|
|
smb_makescred(&scred, p, p->p_ucred);
|
|
error = smb_dev2share(args.dev_fd, SMBM_EXEC, &scred, &ssp);
|
|
if (error)
|
|
return error;
|
|
smb_share_unlock(ssp, 0); /* keep ref, but unlock */
|
|
vcp = SSTOVC(ssp);
|
|
mp->mnt_stat.f_iosize = vcp->vc_txmax;
|
|
|
|
MALLOC(smp, struct smbmount *, sizeof(*smp), M_SMBFSDATA, M_WAITOK);
|
|
memset(smp, 0, sizeof(*smp));
|
|
mp->mnt_data = smp;
|
|
|
|
smp->sm_hash = hashinit(desiredvnodes, HASH_LIST,
|
|
M_SMBFSHASH, M_WAITOK, &smp->sm_hashlen);
|
|
|
|
lockinit(&smp->sm_hashlock, PVFS, "smbfsh", 0, 0);
|
|
smp->sm_share = ssp;
|
|
smp->sm_root = NULL;
|
|
smp->sm_args = args;
|
|
smp->sm_caseopt = args.caseopt;
|
|
smp->sm_args.file_mode = (smp->sm_args.file_mode &
|
|
(S_IRWXU|S_IRWXG|S_IRWXO)) | S_IFREG;
|
|
smp->sm_args.dir_mode = (smp->sm_args.dir_mode &
|
|
(S_IRWXU|S_IRWXG|S_IRWXO)) | S_IFDIR;
|
|
|
|
error = set_statvfs_info(path, UIO_USERSPACE, NULL, UIO_USERSPACE,
|
|
mp, p);
|
|
if (error)
|
|
goto bad;
|
|
mp->mnt_stat.f_namemax = MAXNAMLEN;
|
|
memset(mp->mnt_stat.f_mntfromname, 0, MNAMELEN);
|
|
snprintf(mp->mnt_stat.f_mntfromname, MNAMELEN,
|
|
"//%s@%s/%s", vcp->vc_username, vcp->vc_srvname, ssp->ss_name);
|
|
|
|
vfs_getnewfsid(mp);
|
|
return (0);
|
|
|
|
bad:
|
|
if (smp) {
|
|
if (smp->sm_hash)
|
|
free(smp->sm_hash, M_SMBFSHASH);
|
|
#ifdef __NetBSD__
|
|
lockmgr(&smp->sm_hashlock, LK_DRAIN, NULL);
|
|
#else
|
|
lockdestroy(&smp->sm_hashlock);
|
|
#endif
|
|
FREE(smp, M_SMBFSDATA);
|
|
}
|
|
if (ssp) {
|
|
smb_share_lock(smp->sm_share, 0);
|
|
smb_share_put(ssp, &scred);
|
|
}
|
|
return error;
|
|
}
|
|
|
|
/* Unmount the filesystem described by mp. */
|
|
int
|
|
smbfs_unmount(struct mount *mp, int mntflags, struct proc *p)
|
|
{
|
|
struct smbmount *smp = VFSTOSMBFS(mp);
|
|
struct smb_cred scred;
|
|
int error, flags;
|
|
|
|
SMBVDEBUG("smbfs_unmount: flags=%04x\n", mntflags);
|
|
flags = 0;
|
|
if (mntflags & MNT_FORCE)
|
|
flags |= FORCECLOSE;
|
|
#ifdef QUOTA
|
|
#endif
|
|
/* Drop the extra reference to root vnode. */
|
|
if (smp->sm_root) {
|
|
vrele(SMBTOV(smp->sm_root));
|
|
smp->sm_root = NULL;
|
|
}
|
|
|
|
/* Flush all vnodes. */
|
|
if ((error = vflush(mp, NULLVP, flags)) != 0)
|
|
return error;
|
|
|
|
smb_makescred(&scred, p, p->p_ucred);
|
|
smb_share_lock(smp->sm_share, 0);
|
|
smb_share_put(smp->sm_share, &scred);
|
|
mp->mnt_data = NULL;
|
|
|
|
free(smp->sm_hash, M_SMBFSHASH);
|
|
#ifdef __NetBSD__
|
|
lockmgr(&smp->sm_hashlock, LK_DRAIN, NULL);
|
|
#else
|
|
lockdestroy(&smp->sm_hashlock);
|
|
#endif
|
|
FREE(smp, M_SMBFSDATA);
|
|
return error;
|
|
}
|
|
|
|
/*
|
|
* Get root vnode of the smbfs filesystem, and store it in sm_root.
|
|
*/
|
|
static int
|
|
smbfs_setroot(struct mount *mp)
|
|
{
|
|
struct smbmount *smp = VFSTOSMBFS(mp);
|
|
struct vnode *vp;
|
|
struct smbfattr fattr;
|
|
struct proc *p = curproc;
|
|
struct ucred *cred = p->p_ucred;
|
|
struct smb_cred scred;
|
|
int error;
|
|
|
|
KASSERT(smp->sm_root == NULL);
|
|
|
|
smb_makescred(&scred, p, cred);
|
|
error = smbfs_smb_lookup(NULL, NULL, 0, &fattr, &scred);
|
|
if (error)
|
|
return error;
|
|
error = smbfs_nget(mp, NULL, "TheRooT", 7, &fattr, &vp);
|
|
if (error)
|
|
return error;
|
|
|
|
/*
|
|
* Someone might have already set sm_root while we slept
|
|
* in smb_lookup or malloc/getnewvnode.
|
|
*/
|
|
if (smp->sm_root)
|
|
vput(vp);
|
|
else {
|
|
vp->v_flag |= VROOT;
|
|
smp->sm_root = VTOSMB(vp);
|
|
|
|
/* Keep reference, but unlock */
|
|
VOP_UNLOCK(vp, 0);
|
|
}
|
|
|
|
return (0);
|
|
}
|
|
|
|
/*
|
|
* Return locked root vnode of a filesystem.
|
|
*/
|
|
int
|
|
smbfs_root(struct mount *mp, struct vnode **vpp)
|
|
{
|
|
struct smbmount *smp = VFSTOSMBFS(mp);
|
|
|
|
if (__predict_false(!smp->sm_root)) {
|
|
int error = smbfs_setroot(mp);
|
|
if (error)
|
|
return (error);
|
|
/* fallthrough */
|
|
}
|
|
|
|
KASSERT(smp->sm_root != NULL && SMBTOV(smp->sm_root) != NULL);
|
|
*vpp = SMBTOV(smp->sm_root);
|
|
return vget(*vpp, LK_EXCLUSIVE | LK_RETRY);
|
|
}
|
|
|
|
/*
|
|
* Make a filesystem operational.
|
|
* Nothing to do at the moment.
|
|
*/
|
|
/* ARGSUSED */
|
|
int
|
|
smbfs_start(mp, flags, p)
|
|
struct mount *mp;
|
|
int flags;
|
|
struct proc *p;
|
|
{
|
|
SMBVDEBUG("flags=%04x\n", flags);
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* Do operations associated with quotas, not supported
|
|
*/
|
|
/* ARGSUSED */
|
|
int
|
|
smbfs_quotactl(mp, cmd, uid, arg, p)
|
|
struct mount *mp;
|
|
int cmd;
|
|
uid_t uid;
|
|
void *arg;
|
|
struct proc *p;
|
|
{
|
|
SMBVDEBUG("return EOPNOTSUPP\n");
|
|
return EOPNOTSUPP;
|
|
}
|
|
|
|
void
|
|
smbfs_init(void)
|
|
{
|
|
#ifdef _LKM
|
|
/* Need explicit attach if LKM */
|
|
malloc_type_attach(M_SMBNODENAME);
|
|
malloc_type_attach(M_SMBFSDATA);
|
|
malloc_type_attach(M_SMBFSHASH);
|
|
pool_init(&smbfs_node_pool, sizeof(struct smbnode), 0, 0, 0,
|
|
"smbfsnopl", &pool_allocator_nointr);
|
|
#endif
|
|
|
|
SMBVDEBUG("init.\n");
|
|
}
|
|
|
|
void
|
|
smbfs_reinit(void)
|
|
{
|
|
|
|
SMBVDEBUG("reinit.\n");
|
|
}
|
|
|
|
void
|
|
smbfs_done(void)
|
|
{
|
|
|
|
pool_destroy(&smbfs_node_pool);
|
|
|
|
#ifdef _LKM
|
|
/* Need explicit detach if LKM */
|
|
pool_destroy(&smbfs_node_pool);
|
|
malloc_type_detach(M_SMBNODENAME);
|
|
malloc_type_detach(M_SMBFSDATA);
|
|
malloc_type_detach(M_SMBFSHASH);
|
|
#endif
|
|
|
|
SMBVDEBUG("done.\n");
|
|
}
|
|
|
|
/*
|
|
* smbfs_statvfs call
|
|
*/
|
|
int
|
|
smbfs_statvfs(struct mount *mp, struct statvfs *sbp, struct proc *p)
|
|
{
|
|
struct smbmount *smp = VFSTOSMBFS(mp);
|
|
struct smb_share *ssp = smp->sm_share;
|
|
struct smb_cred scred;
|
|
int error = 0;
|
|
|
|
sbp->f_iosize = SSTOVC(ssp)->vc_txmax; /* optimal transfer block size */
|
|
smb_makescred(&scred, p, p->p_ucred);
|
|
|
|
error = smbfs_smb_statvfs(ssp, sbp, &scred);
|
|
if (error)
|
|
return error;
|
|
|
|
sbp->f_flag = 0; /* copy of mount exported flags */
|
|
sbp->f_owner = mp->mnt_stat.f_owner; /* user that mounted the filesystem */
|
|
sbp->f_namemax = MAXNAMLEN;
|
|
copy_statvfs_info(sbp, mp);
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* Flush out the buffer cache
|
|
*/
|
|
int
|
|
smbfs_sync(mp, waitfor, cred, p)
|
|
struct mount *mp;
|
|
int waitfor;
|
|
struct ucred *cred;
|
|
struct proc *p;
|
|
{
|
|
struct vnode *vp, *nvp;
|
|
struct smbnode *np;
|
|
int error, allerror = 0;
|
|
/*
|
|
* Force stale buffer cache information to be flushed.
|
|
*/
|
|
simple_lock(&mntvnode_slock);
|
|
loop:
|
|
for (vp = LIST_FIRST(&mp->mnt_vnodelist); vp != NULL; vp = nvp) {
|
|
/*
|
|
* If the vnode that we are about to sync is no longer
|
|
* associated with this mount point, start over.
|
|
*/
|
|
if (vp->v_mount != mp)
|
|
goto loop;
|
|
simple_lock(&vp->v_interlock);
|
|
nvp = LIST_NEXT(vp, v_mntvnodes);
|
|
np = VTOSMB(vp);
|
|
if ((vp->v_type == VNON || (np->n_flag & NMODIFIED) == 0) &&
|
|
LIST_EMPTY(&vp->v_dirtyblkhd) &&
|
|
vp->v_uobj.uo_npages == 0) {
|
|
simple_unlock(&vp->v_interlock);
|
|
continue;
|
|
}
|
|
simple_unlock(&mntvnode_slock);
|
|
error = vget(vp, LK_EXCLUSIVE | LK_NOWAIT | LK_INTERLOCK);
|
|
if (error) {
|
|
simple_lock(&mntvnode_slock);
|
|
if (error == ENOENT)
|
|
goto loop;
|
|
continue;
|
|
}
|
|
error = VOP_FSYNC(vp, cred,
|
|
waitfor == MNT_WAIT ? FSYNC_WAIT : 0, 0, 0, p);
|
|
if (error)
|
|
allerror = error;
|
|
vput(vp);
|
|
simple_lock(&mntvnode_slock);
|
|
}
|
|
simple_unlock(&mntvnode_slock);
|
|
return (allerror);
|
|
}
|
|
|
|
#if __FreeBSD_version < 400009
|
|
/*
|
|
* smbfs flat namespace lookup. Unsupported.
|
|
*/
|
|
/* ARGSUSED */
|
|
int smbfs_vget(mp, ino, vpp)
|
|
struct mount *mp;
|
|
ino_t ino;
|
|
struct vnode **vpp;
|
|
{
|
|
return (EOPNOTSUPP);
|
|
}
|
|
|
|
/* ARGSUSED */
|
|
int smbfs_fhtovp(mp, fhp, vpp)
|
|
struct mount *mp;
|
|
struct fid *fhp;
|
|
struct vnode **vpp;
|
|
{
|
|
return (EINVAL);
|
|
}
|
|
|
|
/*
|
|
* Vnode pointer to File handle, should never happen either
|
|
*/
|
|
/* ARGSUSED */
|
|
int
|
|
smbfs_vptofh(vp, fhp)
|
|
struct vnode *vp;
|
|
struct fid *fhp;
|
|
{
|
|
return (EINVAL);
|
|
}
|
|
|
|
#endif /* __FreeBSD_version < 400009 */
|