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NetBSD/sys/fs/smbfs/smbfs_vnops.c

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/* $NetBSD: smbfs_vnops.c,v 1.95 2017/05/28 16:36:37 hannken Exp $ */
/*-
* Copyright (c) 2003 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Jaromir Dolecek.
*
* 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.
*
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. 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 FOUNDATION 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.
*/
/*
* 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_vnops.c,v 1.15 2001/12/20 15:56:45 bp Exp
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: smbfs_vnops.c,v 1.95 2017/05/28 16:36:37 hannken Exp $");
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/namei.h>
#include <sys/kernel.h>
#include <sys/proc.h>
#include <sys/buf.h>
#include <sys/fcntl.h>
#include <sys/mount.h>
#include <sys/unistd.h>
#include <sys/vnode.h>
#include <sys/lockf.h>
#include <sys/kauth.h>
#include <sys/mallocvar.h>
#include <machine/limits.h>
#include <uvm/uvm.h>
#include <uvm/uvm_extern.h>
#include <netsmb/smb.h>
#include <netsmb/smb_conn.h>
#include <netsmb/smb_subr.h>
#include <fs/smbfs/smbfs.h>
#include <fs/smbfs/smbfs_node.h>
#include <fs/smbfs/smbfs_subr.h>
#include <miscfs/genfs/genfs.h>
/*
* Prototypes for SMBFS vnode operations
*/
int smbfs_create(void *);
int smbfs_open(void *);
int smbfs_close(void *);
int smbfs_access(void *);
int smbfs_getattr(void *);
int smbfs_setattr(void *);
int smbfs_read(void *);
int smbfs_write(void *);
int smbfs_fsync(void *);
int smbfs_remove(void *);
int smbfs_link(void *);
int smbfs_lookup(void *);
int smbfs_rename(void *);
int smbfs_mkdir(void *);
int smbfs_rmdir(void *);
int smbfs_symlink(void *);
int smbfs_readdir(void *);
int smbfs_strategy(void *);
int smbfs_print(void *);
int smbfs_pathconf(void *ap);
int smbfs_advlock(void *);
int (**smbfs_vnodeop_p)(void *);
static struct vnodeopv_entry_desc smbfs_vnodeop_entries[] = {
{ &vop_default_desc, vn_default_error },
{ &vop_access_desc, smbfs_access },
{ &vop_advlock_desc, smbfs_advlock },
{ &vop_close_desc, smbfs_close },
{ &vop_create_desc, smbfs_create },
{ &vop_fallocate_desc, genfs_eopnotsupp },
{ &vop_fdiscard_desc, genfs_eopnotsupp },
{ &vop_fsync_desc, smbfs_fsync },
{ &vop_getattr_desc, smbfs_getattr },
{ &vop_getpages_desc, genfs_compat_getpages },
{ &vop_inactive_desc, smbfs_inactive },
{ &vop_ioctl_desc, genfs_enoioctl },
{ &vop_islocked_desc, genfs_islocked },
{ &vop_link_desc, smbfs_link },
{ &vop_lock_desc, genfs_lock },
{ &vop_lookup_desc, smbfs_lookup },
{ &vop_mkdir_desc, smbfs_mkdir },
{ &vop_mknod_desc, genfs_eopnotsupp },
{ &vop_open_desc, smbfs_open },
{ &vop_pathconf_desc, smbfs_pathconf },
{ &vop_print_desc, smbfs_print },
{ &vop_putpages_desc, genfs_putpages },
{ &vop_read_desc, smbfs_read },
{ &vop_readdir_desc, smbfs_readdir },
{ &vop_reclaim_desc, smbfs_reclaim },
{ &vop_remove_desc, smbfs_remove },
{ &vop_rename_desc, smbfs_rename },
{ &vop_rmdir_desc, smbfs_rmdir },
{ &vop_setattr_desc, smbfs_setattr },
{ &vop_strategy_desc, smbfs_strategy },
{ &vop_symlink_desc, smbfs_symlink },
{ &vop_unlock_desc, genfs_unlock },
{ &vop_write_desc, smbfs_write },
{ &vop_mmap_desc, genfs_mmap }, /* mmap */
{ &vop_seek_desc, genfs_seek }, /* seek */
{ &vop_kqfilter_desc, smbfs_kqfilter}, /* kqfilter */
{ NULL, NULL }
};
const struct vnodeopv_desc smbfs_vnodeop_opv_desc =
{ &smbfs_vnodeop_p, smbfs_vnodeop_entries };
static int
smbfs_check_possible(struct vnode *vp, struct smbnode *np, mode_t mode)
{
/*
* Disallow write attempts on read-only file systems;
* unless the file is a socket, fifo, or a block or
* character device resident on the file system.
*/
if (mode & VWRITE) {
switch (vp->v_type) {
case VREG:
case VDIR:
case VLNK:
if (vp->v_mount->mnt_flag & MNT_RDONLY)
return EROFS;
default:
break;
}
}
return 0;
}
static int
smbfs_check_permitted(struct vnode *vp, struct smbnode *np, mode_t mode,
kauth_cred_t cred)
{
struct smbmount *smp = VTOSMBFS(vp);
mode_t file_mode = (vp->v_type == VDIR) ? smp->sm_args.dir_mode :
smp->sm_args.file_mode;
return kauth_authorize_vnode(cred, KAUTH_ACCESS_ACTION(mode,
vp->v_type, file_mode), vp, NULL, genfs_can_access(vp->v_type,
file_mode, smp->sm_args.uid, smp->sm_args.gid, mode, cred));
}
int
smbfs_access(void *v)
{
struct vop_access_args /* {
struct vnode *a_vp;
int a_mode;
kauth_cred_t a_cred;
} */ *ap = v;
struct vnode *vp = ap->a_vp;
struct smbnode *np = VTOSMB(vp);
u_int acc_mode = ap->a_mode;
int error;
#ifdef SMB_VNODE_DEBUG
struct smbmount *smp = VTOSMBFS(vp);
#endif
SMBVDEBUG("file '%.*s', node mode=%o, acc mode=%x\n",
(int) np->n_nmlen, np->n_name,
(vp->v_type == VDIR) ? smp->sm_args.dir_mode : smp->sm_args.file_mode,
acc_mode);
error = smbfs_check_possible(vp, np, acc_mode);
if (error)
return error;
error = smbfs_check_permitted(vp, np, acc_mode, ap->a_cred);
return error;
}
/* ARGSUSED */
int
smbfs_open(void *v)
{
struct vop_open_args /* {
struct vnode *a_vp;
int a_mode;
kauth_cred_t a_cred;
} */ *ap = v;
struct lwp *l = curlwp;
struct vnode *vp = ap->a_vp;
struct smbnode *np = VTOSMB(vp);
struct smb_cred scred;
struct vattr vattr;
u_int32_t sv_caps = SMB_CAPS(SSTOVC(np->n_mount->sm_share));
int error, accmode;
SMBVDEBUG("%.*s,%d\n", (int) np->n_nmlen, np->n_name,
(np->n_flag & NOPEN) != 0);
if (vp->v_type != VREG && vp->v_type != VDIR) {
SMBFSERR("open eacces vtype=%d\n", vp->v_type);
return EACCES;
}
if (vp->v_type == VDIR) {
if ((sv_caps & SMB_CAP_NT_SMBS) == 0) {
np->n_flag |= NOPEN;
return 0;
}
goto do_open; /* skip 'modified' check */
}
if (np->n_flag & NMODIFIED) {
if ((error = smbfs_vinvalbuf(vp, V_SAVE, ap->a_cred, l, 1)) == EINTR)
return error;
smbfs_attr_cacheremove(vp);
error = VOP_GETATTR(vp, &vattr, ap->a_cred);
if (error)
return error;
np->n_mtime.tv_sec = vattr.va_mtime.tv_sec;
} else {
error = VOP_GETATTR(vp, &vattr, ap->a_cred);
if (error)
return error;
if (np->n_mtime.tv_sec != vattr.va_mtime.tv_sec) {
error = smbfs_vinvalbuf(vp, V_SAVE, ap->a_cred, l, 1);
if (error == EINTR)
return error;
np->n_mtime.tv_sec = vattr.va_mtime.tv_sec;
}
}
do_open:
if ((np->n_flag & NOPEN) != 0)
return 0;
smb_makescred(&scred, l, ap->a_cred);
if (vp->v_type == VDIR)
error = smbfs_smb_ntcreatex(np,
SMB_SM_DENYNONE|SMB_AM_OPENREAD, &scred);
else {
/*
* Use DENYNONE to give unixy semantics of permitting
* everything not forbidden by permissions. Ie denial
* is up to server with clients/openers needing to use
* advisory locks for further control.
*/
accmode = SMB_SM_DENYNONE|SMB_AM_OPENREAD;
if ((vp->v_mount->mnt_flag & MNT_RDONLY) == 0)
accmode = SMB_SM_DENYNONE|SMB_AM_OPENRW;
error = smbfs_smb_open(np, accmode, &scred);
if (error) {
if (ap->a_mode & FWRITE)
return EACCES;
error = smbfs_smb_open(np,
SMB_SM_DENYNONE|SMB_AM_OPENREAD, &scred);
}
}
if (!error)
np->n_flag |= NOPEN;
smbfs_attr_cacheremove(vp);
return error;
}
/*
* Close called.
*/
int
smbfs_close(void *v)
{
struct vop_close_args /* {
struct vnodeop_desc *a_desc;
struct vnode *a_vp;
int a_fflag;
kauth_cred_t a_cred;
} */ *ap = v;
int error;
struct lwp *l = curlwp;
struct vnode *vp = ap->a_vp;
struct smbnode *np = VTOSMB(vp);
/* Flush all file data */
error = smbfs_vinvalbuf(vp, V_SAVE, ap->a_cred, l, 1);
if (error)
return (error);
/*
* We must close the directory lookup context now, so that
* later directory changes would be properly detected.
* Ideally, the lookup routines should handle such case, and
* the context would be removed only in smbfs_inactive().
*/
if (vp->v_type == VDIR && (np->n_flag & NOPEN) != 0) {
struct smb_share *ssp = np->n_mount->sm_share;
struct smb_cred scred;
smb_makescred(&scred, l, ap->a_cred);
if (np->n_dirseq != NULL) {
smbfs_findclose(np->n_dirseq, &scred);
np->n_dirseq = NULL;
}
if (SMB_CAPS(SSTOVC(ssp)) & SMB_CAP_NT_SMBS)
smbfs_smb_close(ssp, np->n_fid, &np->n_mtime, &scred);
np->n_flag &= ~NOPEN;
smbfs_attr_cacheremove(vp);
}
return (0);
}
/*
* smbfs_getattr call from vfs.
*/
int
smbfs_getattr(void *v)
{
struct vop_getattr_args /* {
struct vnode *a_vp;
struct vattr *a_vap;
kauth_cred_t a_cred;
} */ *ap = v;
struct vnode *vp = ap->a_vp;
struct smbnode *np = VTOSMB(vp);
struct vattr *va=ap->a_vap;
struct smbfattr fattr;
struct smb_cred scred;
u_quad_t oldsize;
int error;
SMBVDEBUG("%p: '%.*s' isroot %d\n", vp,
(int) np->n_nmlen, np->n_name, (vp->v_vflag & VV_ROOT) != 0);
if ((error = smbfs_attr_cachelookup(vp, va)) == 0)
return (0);
SMBVDEBUG0("not in the cache\n");
smb_makescred(&scred, curlwp, ap->a_cred);
oldsize = np->n_size;
error = smbfs_smb_lookup(np, NULL, 0, &fattr, &scred);
if (error) {
SMBVDEBUG("error %d\n", error);
return error;
}
smbfs_attr_cacheenter(vp, &fattr);
smbfs_attr_cachelookup(vp, va);
if ((np->n_flag & NOPEN) != 0)
np->n_size = oldsize;
return 0;
}
int
smbfs_setattr(void *v)
{
struct vop_setattr_args /* {
struct vnode *a_vp;
struct vattr *a_vap;
kauth_cred_t a_cred;
} */ *ap = v;
struct lwp *l = curlwp;
struct vnode *vp = ap->a_vp;
struct smbnode *np = VTOSMB(vp);
struct vattr *vap = ap->a_vap;
struct timespec *mtime, *atime;
struct smb_cred scred;
struct smb_share *ssp = np->n_mount->sm_share;
struct smb_vc *vcp = SSTOVC(ssp);
u_quad_t tsize = 0;
int isreadonly, doclose, error = 0;
SMBVDEBUG0("\n");
if (vap->va_flags != VNOVAL)
return EOPNOTSUPP;
isreadonly = (vp->v_mount->mnt_flag & MNT_RDONLY);
/*
* Disallow write attempts if the filesystem is mounted read-only.
*/
if ((vap->va_uid != (uid_t)VNOVAL || vap->va_gid != (gid_t)VNOVAL ||
vap->va_atime.tv_sec != VNOVAL || vap->va_mtime.tv_sec != VNOVAL ||
vap->va_mode != (mode_t)VNOVAL) && isreadonly)
return EROFS;
smb_makescred(&scred, l, ap->a_cred);
if (vap->va_size != VNOVAL) {
switch (vp->v_type) {
case VDIR:
return EISDIR;
case VREG:
break;
default:
return EINVAL;
};
if (isreadonly)
return EROFS;
doclose = 0;
tsize = np->n_size;
np->n_size = vap->va_size;
uvm_vnp_setsize(vp, vap->va_size);
if ((np->n_flag & NOPEN) == 0) {
error = smbfs_smb_open(np,
SMB_SM_DENYNONE|SMB_AM_OPENRW, &scred);
if (error == 0)
doclose = 1;
}
if (error == 0)
error = smbfs_smb_setfsize(np, vap->va_size, &scred);
if (doclose)
smbfs_smb_close(ssp, np->n_fid, NULL, &scred);
if (error) {
np->n_size = tsize;
uvm_vnp_setsize(vp, tsize);
return (error);
}
}
mtime = atime = NULL;
if (vap->va_mtime.tv_sec != VNOVAL)
mtime = &vap->va_mtime;
if (vap->va_atime.tv_sec != VNOVAL)
atime = &vap->va_atime;
if (mtime != atime) {
error = kauth_authorize_vnode(ap->a_cred,
KAUTH_VNODE_WRITE_TIMES, ap->a_vp, NULL,
genfs_can_chtimes(ap->a_vp, vap->va_vaflags,
VTOSMBFS(vp)->sm_args.uid, ap->a_cred));
if (error)
return (error);
#if 0
if (mtime == NULL)
mtime = &np->n_mtime;
if (atime == NULL)
atime = &np->n_atime;
#endif
/*
* If file is opened, then we can use handle based calls.
* If not, use path based ones.
*/
if ((np->n_flag & NOPEN) == 0) {
if (vcp->vc_flags & SMBV_WIN95) {
error = VOP_OPEN(vp, FWRITE, ap->a_cred);
if (!error) {
/* error = smbfs_smb_setfattrNT(np, 0, mtime, atime, &scred);
VOP_GETATTR(vp, &vattr, ap->a_cred);*/
if (mtime)
np->n_mtime = *mtime;
VOP_CLOSE(vp, FWRITE, ap->a_cred);
}
} else if (SMB_CAPS(vcp) & SMB_CAP_NT_SMBS) {
error = smbfs_smb_setpattrNT(np, 0, mtime, atime, &scred);
} else if (SMB_DIALECT(vcp) >= SMB_DIALECT_LANMAN2_0) {
error = smbfs_smb_setptime2(np, mtime, atime, 0, &scred);
} else {
error = smbfs_smb_setpattr(np, 0, mtime, &scred);
}
} else {
if (SMB_CAPS(vcp) & SMB_CAP_NT_SMBS) {
error = smbfs_smb_setfattrNT(np, 0, mtime, atime, &scred);
} else if (SMB_DIALECT(vcp) >= SMB_DIALECT_LANMAN1_0) {
error = smbfs_smb_setftime(np, mtime, atime, &scred);
} else {
/*
* XXX I have no idea how to handle this for core
* level servers. The possible solution is to
* update mtime after file is closed.
*/
}
}
}
/*
* Invalidate attribute cache in case if server doesn't set
* required attributes.
*/
smbfs_attr_cacheremove(vp); /* invalidate cache */
VOP_GETATTR(vp, vap, ap->a_cred);
np->n_mtime.tv_sec = vap->va_mtime.tv_sec;
VN_KNOTE(vp, NOTE_ATTRIB);
return error;
}
/*
* smbfs_read call.
*/
int
smbfs_read(void *v)
{
struct vop_read_args /* {
struct vnode *a_vp;
struct uio *a_uio;
int a_ioflag;
kauth_cred_t a_cred;
} */ *ap = v;
struct vnode *vp = ap->a_vp;
if (vp->v_type != VREG && vp->v_type != VDIR)
return EPERM;
return smbfs_readvnode(vp, ap->a_uio, ap->a_cred);
}
int
smbfs_write(void *v)
{
struct vop_write_args /* {
struct vnode *a_vp;
struct uio *a_uio;
int a_ioflag;
kauth_cred_t a_cred;
} */ *ap = v;
struct vnode *vp = ap->a_vp;
struct uio *uio = ap->a_uio;
SMBVDEBUG("%d,ofs=%lld,sz=%zu\n",vp->v_type,
(long long int)uio->uio_offset, uio->uio_resid);
if (vp->v_type != VREG)
return (EPERM);
return smbfs_writevnode(vp, uio, ap->a_cred, ap->a_ioflag);
}
/*
* smbfs_create call
* Create a regular file. On entry the directory to contain the file being
* created is locked. We must release before we return.
*/
int
smbfs_create(void *v)
{
struct vop_create_v3_args /* {
struct vnode *a_dvp;
struct vnode **a_vpp;
struct componentname *a_cnp;
struct vattr *a_vap;
} */ *ap = v;
struct vnode *dvp = ap->a_dvp;
struct vattr *vap = ap->a_vap;
struct componentname *cnp = ap->a_cnp;
struct smbnode *dnp = VTOSMB(dvp);
struct smbfattr fattr;
struct smb_cred scred;
const char *name = cnp->cn_nameptr;
int nmlen = cnp->cn_namelen;
int error = EINVAL;
if (vap->va_type != VREG)
goto out;
smb_makescred(&scred, curlwp, cnp->cn_cred);
error = smbfs_smb_create(dnp, name, nmlen, &scred);
if (error)
goto out;
error = smbfs_smb_lookup(dnp, name, nmlen, &fattr, &scred);
if (error)
goto out;
error = smbfs_nget(VTOVFS(dvp), dvp, name, nmlen, &fattr, ap->a_vpp);
if (error)
goto out;
cache_enter(dvp, *ap->a_vpp, cnp->cn_nameptr, cnp->cn_namelen,
cnp->cn_flags);
out:
VN_KNOTE(dvp, NOTE_WRITE);
return (error);
}
int
smbfs_remove(void *v)
{
struct vop_remove_v2_args /* {
struct vnodeop_desc *a_desc;
struct vnode * a_dvp;
struct vnode * a_vp;
struct componentname * a_cnp;
} */ *ap = v;
struct vnode *vp = ap->a_vp;
struct vnode *dvp = ap->a_dvp;
struct componentname *cnp = ap->a_cnp;
struct smbnode *np = VTOSMB(vp);
struct smb_cred scred;
int error;
if (vp->v_type == VDIR || (np->n_flag & NOPEN) != 0
|| vp->v_usecount != 1) {
/* XXX Eventually should do something along NFS sillyrename */
error = EPERM;
} else {
smb_makescred(&scred, curlwp, cnp->cn_cred);
error = smbfs_smb_delete(np, &scred);
}
if (error == 0)
np->n_flag |= NGONE;
VN_KNOTE(ap->a_vp, NOTE_DELETE);
VN_KNOTE(ap->a_dvp, NOTE_WRITE);
if (dvp == vp)
vrele(vp);
else
vput(vp);
return (error);
}
/*
* smbfs_file rename call
*/
int
smbfs_rename(void *v)
{
struct vop_rename_args /* {
struct vnode *a_fdvp;
struct vnode *a_fvp;
struct componentname *a_fcnp;
struct vnode *a_tdvp;
struct vnode *a_tvp;
struct componentname *a_tcnp;
} */ *ap = v;
struct vnode *fvp = ap->a_fvp;
struct vnode *tvp = ap->a_tvp;
struct vnode *fdvp = ap->a_fdvp;
struct vnode *tdvp = ap->a_tdvp;
struct componentname *tcnp = ap->a_tcnp;
/* struct componentname *fcnp = ap->a_fcnp;*/
struct smb_cred scred;
#ifdef notyet
u_int16_t flags = 6;
#endif
int error=0;
/* Check for cross-device rename */
if ((fvp->v_mount != tdvp->v_mount) ||
(tvp && (fvp->v_mount != tvp->v_mount))) {
error = EXDEV;
goto out;
}
if (tvp && tvp->v_usecount > 1) {
error = EBUSY;
goto out;
}
#ifdef notnow
flags = 0x10; /* verify all writes */
if (fvp->v_type == VDIR) {
flags |= 2;
} else if (fvp->v_type == VREG) {
flags |= 1;
} else {
error = EINVAL;
goto out;
}
#endif
smb_makescred(&scred, curlwp, tcnp->cn_cred);
/*
* It seems that Samba doesn't implement SMB_COM_MOVE call...
*/
#ifdef notnow
if (SMB_DIALECT(SSTOCN(smp->sm_share)) >= SMB_DIALECT_LANMAN1_0) {
error = smbfs_smb_move(VTOSMB(fvp), VTOSMB(tdvp),
tcnp->cn_nameptr, tcnp->cn_namelen, flags, &scred);
} else
#endif
{
/*
* We have to do the work atomicaly
*/
if (tvp && tvp != fvp) {
error = smbfs_smb_delete(VTOSMB(tvp), &scred);
if (error)
goto out;
VTOSMB(tvp)->n_flag |= NGONE;
VN_KNOTE(tdvp, NOTE_WRITE);
VN_KNOTE(tvp, NOTE_DELETE);
cache_purge(tvp);
}
error = smbfs_smb_rename(VTOSMB(fvp), VTOSMB(tdvp),
tcnp->cn_nameptr, tcnp->cn_namelen, &scred);
VTOSMB(fvp)->n_flag |= NGONE;
VN_KNOTE(fdvp, NOTE_WRITE);
VN_KNOTE(fvp, NOTE_RENAME);
}
if (fvp->v_type == VDIR) {
if (tvp != NULL && tvp->v_type == VDIR)
cache_purge(tdvp);
cache_purge(fdvp);
}
smbfs_attr_cacheremove(fdvp);
smbfs_attr_cacheremove(tdvp);
out:
if (tdvp == tvp)
vrele(tdvp);
else
vput(tdvp);
if (tvp)
vput(tvp);
vrele(fdvp);
vrele(fvp);
return (error);
}
/*
* somtime it will come true...
*/
int
smbfs_link(void *v)
{
return genfs_eopnotsupp(v);
}
/*
* smbfs_symlink link create call.
* Sometime it will be functional...
*/
int
smbfs_symlink(void *v)
{
return genfs_eopnotsupp(v);
}
int
smbfs_mkdir(void *v)
{
struct vop_mkdir_v3_args /* {
struct vnode *a_dvp;
struct vnode **a_vpp;
struct componentname *a_cnp;
struct vattr *a_vap;
} */ *ap = v;
struct vnode *dvp = ap->a_dvp;
/* struct vattr *vap = ap->a_vap;*/
struct vnode *vp;
struct componentname *cnp = ap->a_cnp;
struct smbnode *dnp = VTOSMB(dvp);
struct smb_cred scred;
struct smbfattr fattr;
const char *name = cnp->cn_nameptr;
int len = cnp->cn_namelen;
int error;
if ((name[0] == '.') && ((len == 1) || ((len == 2) && (name[1] == '.')))){
error = EEXIST;
goto out;
}
smb_makescred(&scred, curlwp, cnp->cn_cred);
error = smbfs_smb_mkdir(dnp, name, len, &scred);
if (error)
goto out;
error = smbfs_smb_lookup(dnp, name, len, &fattr, &scred);
if (error)
goto out;
error = smbfs_nget(VTOVFS(dvp), dvp, name, len, &fattr, &vp);
if (error)
goto out;
*ap->a_vpp = vp;
out:
VN_KNOTE(dvp, NOTE_WRITE | NOTE_LINK);
return (error);
}
/*
* smbfs_remove directory call
*/
int
smbfs_rmdir(void *v)
{
struct vop_rmdir_v2_args /* {
struct vnode *a_dvp;
struct vnode *a_vp;
struct componentname *a_cnp;
} */ *ap = v;
struct vnode *vp = ap->a_vp;
struct vnode *dvp = ap->a_dvp;
struct componentname *cnp = ap->a_cnp;
/* struct smbmount *smp = VTOSMBFS(vp);*/
struct smbnode *dnp = VTOSMB(dvp);
struct smbnode *np = VTOSMB(vp);
struct smb_cred scred;
int error;
if (dvp == vp) {
vrele(vp);
return (EINVAL);
}
smb_makescred(&scred, curlwp, cnp->cn_cred);
error = smbfs_smb_rmdir(np, &scred);
if (error == 0)
np->n_flag |= NGONE;
dnp->n_flag |= NMODIFIED;
smbfs_attr_cacheremove(dvp);
VN_KNOTE(dvp, NOTE_WRITE | NOTE_LINK);
VN_KNOTE(vp, NOTE_DELETE);
cache_purge(dvp);
cache_purge(vp);
vput(vp);
return (error);
}
/*
* smbfs_readdir call
*/
int
smbfs_readdir(void *v)
{
struct vop_readdir_args /* {
struct vnode *a_vp;
struct uio *a_uio;
kauth_cred_t a_cred;
int *a_eofflag;
u_long *a_cookies;
int a_ncookies;
} */ *ap = v;
struct vnode *vp = ap->a_vp;
if (vp->v_type != VDIR)
return (EPERM);
#ifdef notnow
if (ap->a_ncookies) {
printf("smbfs_readdir: no support for cookies now...");
return (EOPNOTSUPP);
}
#endif
return (smbfs_readvnode(vp, ap->a_uio, ap->a_cred));
}
/* ARGSUSED */
int
smbfs_fsync(void *v)
{
/*return (smb_flush(ap->a_vp, ap->a_cred, ap->a_waitfor, ap->a_l, 1));*/
return (0);
}
int
smbfs_print(void *v)
{
struct vop_print_args /* {
struct vnode *a_vp;
} */ *ap = v;
struct vnode *vp = ap->a_vp;
struct smbnode *np = VTOSMB(vp);
printf("tag VT_SMBFS, name = %.*s, parent = %p, open = %d\n",
(int)np->n_nmlen, np->n_name,
np->n_parent ? np->n_parent : NULL,
(np->n_flag & NOPEN) != 0);
return (0);
}
int
smbfs_pathconf(void *v)
{
struct vop_pathconf_args /* {
struct vnode *vp;
int a_name;
register_t *a_retval;
} */ *ap = v;
register_t *retval = ap->a_retval;
int error = 0;
switch (ap->a_name) {
case _PC_PIPE_BUF:
*retval = PIPE_BUF;
break;
case _PC_SYNC_IO:
*retval = 1;
break;
case _PC_LINK_MAX:
*retval = 0;
break;
case _PC_NAME_MAX:
*retval = ap->a_vp->v_mount->mnt_stat.f_namemax;
break;
case _PC_PATH_MAX:
*retval = 800; /* XXX: a correct one ? */
break;
default:
error = EINVAL;
break;
}
return (error);
}
int
smbfs_strategy(void *v)
{
struct vop_strategy_args /* {
struct vnode *a_vp;
struct buf *a_bp;
} */ *ap = v;
struct buf *bp = ap->a_bp;
kauth_cred_t cr;
struct lwp *l;
int error = 0;
SMBVDEBUG0("\n");
if ((bp->b_flags & (B_PHYS|B_ASYNC)) == (B_PHYS|B_ASYNC))
panic("smbfs physio/async");
if (bp->b_flags & B_ASYNC) {
l = NULL;
cr = NULL;
} else {
l = curlwp; /* XXX */
cr = l->l_cred;
}
if ((bp->b_flags & B_ASYNC) == 0)
error = smbfs_doio(bp, cr, l);
return (error);
}
#ifndef __NetBSD__
static char smbfs_atl[] = "rhsvda";
static int
smbfs_getextattr(struct vop_getextattr_args *ap)
/* {
IN struct vnode *a_vp;
IN char *a_name;
INOUT struct uio *a_uio;
IN kauth_cred_t a_cred;
};
*/
{
struct vnode *vp = ap->a_vp;
struct lwp *l = ap->a_l;
kauth_cred_t cred = ap->a_cred;
struct uio *uio = ap->a_uio;
const char *name = ap->a_name;
struct smbnode *np = VTOSMB(vp);
struct vattr vattr;
char buf[10];
int i, attr, error;
error = VOP_ACCESS(vp, VREAD, cred, td);
if (error)
return error;
error = VOP_GETATTR(vp, &vattr, cred, td);
if (error)
return error;
if (strcmp(name, "dosattr") == 0) {
attr = np->n_dosattr;
for (i = 0; i < 6; i++, attr >>= 1)
buf[i] = (attr & 1) ? smbfs_atl[i] : '-';
buf[i] = 0;
error = uiomove(buf, i, uio);
} else
error = EINVAL;
return error;
}
#endif /* !__NetBSD__ */
/*
* Since we expected to support F_GETLK (and SMB protocol has no such function),
* it is necessary to use lf_advlock(). It would be nice if this function had
* a callback mechanism because it will help to improve a level of consistency.
*/
int
smbfs_advlock(void *v)
{
struct vop_advlock_args /* {
struct vnode *a_vp;
void *a_id;
int a_op;
struct flock *a_fl;
int a_flags;
} */ *ap = v;
struct vnode *vp = ap->a_vp;
struct smbnode *np = VTOSMB(vp);
struct flock *fl = ap->a_fl;
struct lwp *l = curlwp;
struct smb_cred scred;
u_quad_t size;
off_t start, end, oadd;
int error, lkop;
if (vp->v_type == VDIR) {
/*
* SMB protocol have no support for directory locking.
* Although locks can be processed on local machine, I don't
* think that this is a good idea, because some programs
* can work wrong assuming directory is locked. So, we just
* return 'operation not supported'.
*/
return EOPNOTSUPP;
}
size = np->n_size;
switch (fl->l_whence) {
case SEEK_SET:
case SEEK_CUR:
start = fl->l_start;
break;
case SEEK_END:
#ifndef __NetBSD__
if (size > OFF_MAX ||
(fl->l_start > 0 && size > OFF_MAX - fl->l_start))
return EOVERFLOW;
#endif
start = size + fl->l_start;
break;
default:
return EINVAL;
}
if (start < 0)
return EINVAL;
if (fl->l_len < 0) {
if (start == 0)
return EINVAL;
end = start - 1;
start += fl->l_len;
if (start < 0)
return EINVAL;
} else if (fl->l_len == 0)
end = -1;
else {
oadd = fl->l_len - 1;
#ifndef __NetBSD__
if (oadd > OFF_MAX - start)
return EOVERFLOW;
#endif
end = start + oadd;
}
smb_makescred(&scred, l, l ? l->l_cred : NULL);
switch (ap->a_op) {
case F_SETLK:
switch (fl->l_type) {
case F_WRLCK:
lkop = SMB_LOCK_EXCL;
break;
case F_RDLCK:
lkop = SMB_LOCK_SHARED;
break;
case F_UNLCK:
lkop = SMB_LOCK_RELEASE;
break;
default:
return EINVAL;
}
error = lf_advlock(ap, &np->n_lockf, size);
if (error)
break;
/*
* The ID we use for smb_lock is passed as PID to SMB
* server. It MUST agree with PID as setup in basic
* SMB header in later write requests, otherwise SMB server
* returns EDEADLK. See also smb_rq_new() on SMB header setup.
*/
error = smbfs_smb_lock(np, lkop,(void *)1, start, end, &scred);
if (error) {
ap->a_op = F_UNLCK;
lf_advlock(ap, &np->n_lockf, size);
}
break;
case F_UNLCK:
lf_advlock(ap, &np->n_lockf, size);
error = smbfs_smb_lock(np, SMB_LOCK_RELEASE, ap->a_id, start, end, &scred);
break;
case F_GETLK:
error = lf_advlock(ap, &np->n_lockf, size);
break;
default:
return EINVAL;
}
return error;
}
static int
smbfs_pathcheck(struct smbmount *smp, const char *name, int nmlen)
{
static const char * const badchars = "*/\\:<>;?";
static const char * const badchars83 = " +|,[]=";
const char *cp;
int i;
if (SMB_DIALECT(SSTOVC(smp->sm_share)) < SMB_DIALECT_LANMAN2_0) {
/*
* Name should conform 8.3 format
*/
if (nmlen > 12)
return (ENAMETOOLONG);
if ((cp = memchr(name, '.', nmlen)) == NULL
|| cp == name || (cp - name) > 8
|| (cp = memchr(cp + 1, '.', nmlen - (cp - name))) != NULL)
goto bad;
for (cp = name, i = 0; i < nmlen; i++, cp++)
if (strchr(badchars83, *cp) != NULL)
goto bad;
}
for (cp = name, i = 0; i < nmlen; i++, cp++)
if (strchr(badchars, *cp) != NULL)
goto bad;
/* name is fine */
return (0);
bad:
return (ENOENT);
}
/*
* Things go even weird without fixed inode numbers...
*/
int
smbfs_lookup(void *v)
{
struct vop_lookup_v2_args /* {
struct vnode *a_dvp;
struct vnode **a_vpp;
struct componentname *a_cnp;
} */ *ap = v;
struct componentname *cnp = ap->a_cnp;
struct vnode *dvp = ap->a_dvp;
struct vnode **vpp = ap->a_vpp;
struct mount *mp = dvp->v_mount;
struct smbnode *dnp;
struct smbfattr fattr;
struct smb_cred scred;
const char *name = cnp->cn_nameptr;
int flags = cnp->cn_flags;
int nameiop = cnp->cn_nameiop;
int nmlen = cnp->cn_namelen;
int error, islastcn, isdot;
/*
* Check accessiblity of directory.
*/
error = VOP_ACCESS(dvp, VEXEC, cnp->cn_cred);
if (error)
return (error);
if ((cnp->cn_flags & ISLASTCN) &&
(dvp->v_mount->mnt_flag & MNT_RDONLY) &&
(cnp->cn_nameiop == DELETE || cnp->cn_nameiop == RENAME))
return (EROFS);
SMBVDEBUG("%d '%.*s' in '%.*s'\n", nameiop, nmlen, name,
(int) VTOSMB(dvp)->n_nmlen, VTOSMB(dvp)->n_name);
islastcn = flags & ISLASTCN;
/*
* Before tediously performing a linear scan of the directory,
* check the name cache to see if the directory/name pair
* we are looking for is known already.
* If the directory/name pair is found in the name cache,
* we have to ensure the directory has not changed from
* the time the cache entry has been created. If it has,
* the cache entry has to be ignored.
*/
if (cache_lookup(dvp, cnp->cn_nameptr, cnp->cn_namelen,
cnp->cn_nameiop, cnp->cn_flags,
NULL, vpp)) {
struct vattr vattr;
struct vnode *newvp;
bool killit = false;
error = VOP_ACCESS(dvp, VEXEC, cnp->cn_cred);
if (error != 0) {
if (*vpp != NULLVP) {
vrele(*vpp);
}
*vpp = NULLVP;
return error;
}
if (*vpp == NULLVP) {
if (!VOP_GETATTR(dvp, &vattr, cnp->cn_cred)
&& vattr.va_mtime.tv_sec == VTOSMB(dvp)->n_nctime)
return ENOENT;
cache_purge(dvp);
VTOSMB(dvp)->n_nctime = 0;
goto dolookup;
}
newvp = *vpp;
if (newvp != dvp)
vn_lock(newvp, LK_SHARED | LK_RETRY);
error = VOP_GETATTR(newvp, &vattr, cnp->cn_cred);
/*
* If the file type on the server is inconsistent
* with what it was when we created the vnode,
* kill the bogus vnode now and fall through to
* the code below to create a new one with the
* right type.
*/
if (error == 0 &&
((newvp->v_type == VDIR &&
(VTOSMB(newvp)->n_dosattr & SMB_FA_DIR) == 0) ||
(newvp->v_type == VREG &&
(VTOSMB(newvp)->n_dosattr & SMB_FA_DIR) != 0)))
killit = true;
else if (error == 0
&& vattr.va_ctime.tv_sec == VTOSMB(newvp)->n_ctime)
{
if (newvp != dvp)
VOP_UNLOCK(newvp);
/* nfsstats.lookupcache_hits++; */
return (0);
}
cache_purge(newvp);
if (newvp != dvp) {
if (killit) {
smbfs_uncache(newvp);
} else
vput(newvp);
} else
vrele(newvp);
*vpp = NULLVP;
}
dolookup:
/* ensure the name is sane */
if (nameiop != LOOKUP) {
error = smbfs_pathcheck(VFSTOSMBFS(mp), cnp->cn_nameptr,
cnp->cn_namelen);
if (error)
return (error);
}
dnp = VTOSMB(dvp);
isdot = (nmlen == 1 && name[0] == '.');
/*
* entry is not in the cache or has been expired
*/
smb_makescred(&scred, curlwp, cnp->cn_cred);
if (flags & ISDOTDOT)
error = smbfs_smb_lookup(VTOSMB(dnp->n_parent), NULL, 0,
&fattr, &scred);
else
error = smbfs_smb_lookup(dnp, name, nmlen, &fattr, &scred);
if (error) {
/* Not found */
if (error != ENOENT)
return (error);
/*
* Handle RENAME or CREATE case...
*/
if ((nameiop == CREATE || nameiop == RENAME) && islastcn) {
/*
* Access for write is interpreted as allowing
* creation of files in the directory.
*/
error = VOP_ACCESS(dvp, VWRITE, cnp->cn_cred);
if (error)
return (error);
return (EJUSTRETURN);
}
/*
* Insert name into cache (as non-existent) if appropriate.
*/
if (nameiop != CREATE)
cache_enter(dvp, *vpp, cnp->cn_nameptr, cnp->cn_namelen,
cnp->cn_flags);
return (ENOENT);
}
/* Found */
/* Handle RENAME case... */
if (nameiop == RENAME && islastcn) {
error = VOP_ACCESS(dvp, VWRITE, cnp->cn_cred);
if (error)
return (error);
if (isdot)
return (EISDIR);
error = smbfs_nget(mp, dvp, name, nmlen, &fattr, vpp);
if (error)
return (error);
return (0);
}
if (isdot) {
vref(dvp);
*vpp = dvp;
error = 0;
} else {
error = smbfs_nget(mp, dvp, name, nmlen,
((flags & ISDOTDOT) ? NULL : &fattr), vpp);
}
if (error)
return error;
if (cnp->cn_nameiop != DELETE || !islastcn) {
VTOSMB(*vpp)->n_ctime = VTOSMB(*vpp)->n_mtime.tv_sec;
cache_enter(dvp, *vpp, cnp->cn_nameptr, cnp->cn_namelen,
cnp->cn_flags);
#ifdef notdef
} else if (error == ENOENT && cnp->cn_nameiop != CREATE) {
VTOSMB(*vpp)->n_nctime = VTOSMB(*vpp)->n_mtime.tv_sec;
cache_enter(dvp, *vpp, cnp->cn_nameptr, cnp->cn_namelen,
cnp->cn_flags);
#endif
}
return (0);
}
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