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/*
Unix SMB/CIFS implementation.
POSIX NTVFS backend
Copyright (C) Andrew Tridgell 2004
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
/*
this implements most of the POSIX NTVFS backend
This is the default backend
*/
#include "include/includes.h"
#include "vfs_posix.h"
/*
setup config options for a posix share
*/
static void pvfs_setup_options(struct pvfs_state *pvfs)
{
int snum = pvfs->tcon->service;
if (lp_map_hidden(snum)) pvfs->flags |= PVFS_FLAG_MAP_HIDDEN;
if (lp_map_archive(snum)) pvfs->flags |= PVFS_FLAG_MAP_ARCHIVE;
if (lp_map_system(snum)) pvfs->flags |= PVFS_FLAG_MAP_SYSTEM;
if (lp_readonly(snum)) pvfs->flags |= PVFS_FLAG_READONLY;
if (lp_strict_sync(snum)) pvfs->flags |= PVFS_FLAG_STRICT_SYNC;
if (lp_strict_locking(snum)) pvfs->flags |= PVFS_FLAG_STRICT_LOCKING;
if (lp_ci_filesystem(snum)) pvfs->flags |= PVFS_FLAG_CI_FILESYSTEM;
pvfs->share_name = talloc_strdup(pvfs, lp_servicename(snum));
}
/*
connect to a share - used when a tree_connect operation comes
in. For a disk based backend we needs to ensure that the base
directory exists (tho it doesn't need to be accessible by the user,
that comes later)
*/
static NTSTATUS pvfs_connect(struct ntvfs_module_context *ntvfs,
struct smbsrv_request *req, const char *sharename)
{
struct smbsrv_tcon *tcon = req->tcon;
struct pvfs_state *pvfs;
struct stat st;
char *base_directory;
NTSTATUS status;
pvfs = talloc_zero_p(tcon, struct pvfs_state);
if (pvfs == NULL) {
return NT_STATUS_NO_MEMORY;
}
/* for simplicity of path construction, remove any trailing slash now */
base_directory = talloc_strdup(pvfs, lp_pathname(tcon->service));
trim_string(base_directory, NULL, "/");
pvfs->tcon = tcon;
pvfs->base_directory = base_directory;
/* the directory must exist. Note that we deliberately don't
check that it is readable */
if (stat(pvfs->base_directory, &st) != 0 || !S_ISDIR(st.st_mode)) {
DEBUG(0,("pvfs_connect: '%s' is not a directory, when connecting to [%s]\n",
pvfs->base_directory, sharename));
return NT_STATUS_BAD_NETWORK_NAME;
}
tcon->fs_type = talloc_strdup(tcon, "NTFS");
tcon->dev_type = talloc_strdup(tcon, "A:");
ntvfs->private_data = pvfs;
pvfs->brl_context = brl_init(pvfs,
pvfs->tcon->smb_conn->connection->server_id,
pvfs->tcon->service,
pvfs->tcon->smb_conn->connection->messaging_ctx);
if (pvfs->brl_context == NULL) {
return NT_STATUS_INTERNAL_DB_CORRUPTION;
}
pvfs->odb_context = odb_init(pvfs,
pvfs->tcon->smb_conn->connection->server_id,
pvfs->tcon->service,
pvfs->tcon->smb_conn->connection->messaging_ctx);
if (pvfs->odb_context == NULL) {
return NT_STATUS_INTERNAL_DB_CORRUPTION;
}
/* allocate the fnum id -> ptr tree */
pvfs->idtree_fnum = idr_init(pvfs);
if (pvfs->idtree_fnum == NULL) {
return NT_STATUS_NO_MEMORY;
}
/* allocate the search handle -> ptr tree */
pvfs->idtree_search = idr_init(pvfs);
if (pvfs->idtree_search == NULL) {
return NT_STATUS_NO_MEMORY;
}
status = pvfs_mangle_init(pvfs);
if (!NT_STATUS_IS_OK(status)) {
return status;
}
pvfs_setup_options(pvfs);
#ifdef SIGXFSZ
/* who had the stupid idea to generate a signal on a large
file write instead of just failing it!? */
BlockSignals(True, SIGXFSZ);
#endif
return NT_STATUS_OK;
}
/*
disconnect from a share
*/
static NTSTATUS pvfs_disconnect(struct ntvfs_module_context *ntvfs,
struct smbsrv_tcon *tcon)
{
return NT_STATUS_OK;
}
/*
check if a directory exists
*/
static NTSTATUS pvfs_chkpath(struct ntvfs_module_context *ntvfs,
struct smbsrv_request *req, struct smb_chkpath *cp)
{
struct pvfs_state *pvfs = ntvfs->private_data;
struct pvfs_filename *name;
NTSTATUS status;
/* resolve the cifs name to a posix name */
status = pvfs_resolve_name(pvfs, req, cp->in.path,
PVFS_RESOLVE_NO_WILDCARD, &name);
if (!NT_STATUS_IS_OK(status)) {
return status;
}
if (!name->exists) {
return NT_STATUS_OBJECT_NAME_NOT_FOUND;
}
if (!S_ISDIR(name->st.st_mode)) {
return NT_STATUS_NOT_A_DIRECTORY;
}
return NT_STATUS_OK;
}
/*
copy a set of files
*/
static NTSTATUS pvfs_copy(struct ntvfs_module_context *ntvfs,
struct smbsrv_request *req, struct smb_copy *cp)
{
DEBUG(0,("pvfs_copy not implemented\n"));
return NT_STATUS_NOT_SUPPORTED;
}
/*
return print queue info
*/
static NTSTATUS pvfs_lpq(struct ntvfs_module_context *ntvfs,
struct smbsrv_request *req, union smb_lpq *lpq)
{
return NT_STATUS_NOT_SUPPORTED;
}
/* SMBtrans - not used on file shares */
static NTSTATUS pvfs_trans(struct ntvfs_module_context *ntvfs,
struct smbsrv_request *req, struct smb_trans2 *trans2)
{
return NT_STATUS_ACCESS_DENIED;
}
/*
initialialise the POSIX disk backend, registering ourselves with the ntvfs subsystem
*/
NTSTATUS ntvfs_posix_init(void)
{
NTSTATUS ret;
struct ntvfs_ops ops;
ZERO_STRUCT(ops);
ops.type = NTVFS_DISK;
/* fill in all the operations */
ops.connect = pvfs_connect;
ops.disconnect = pvfs_disconnect;
ops.unlink = pvfs_unlink;
ops.chkpath = pvfs_chkpath;
ops.qpathinfo = pvfs_qpathinfo;
ops.setpathinfo = pvfs_setpathinfo;
ops.open = pvfs_open;
ops.mkdir = pvfs_mkdir;
ops.rmdir = pvfs_rmdir;
ops.rename = pvfs_rename;
ops.copy = pvfs_copy;
ops.ioctl = pvfs_ioctl;
ops.read = pvfs_read;
ops.write = pvfs_write;
ops.seek = pvfs_seek;
ops.flush = pvfs_flush;
ops.close = pvfs_close;
ops.exit = pvfs_exit;
ops.lock = pvfs_lock;
ops.setfileinfo = pvfs_setfileinfo;
ops.qfileinfo = pvfs_qfileinfo;
ops.fsinfo = pvfs_fsinfo;
ops.lpq = pvfs_lpq;
ops.search_first = pvfs_search_first;
ops.search_next = pvfs_search_next;
ops.search_close = pvfs_search_close;
ops.trans = pvfs_trans;
ops.logoff = pvfs_logoff;
ops.async_setup = pvfs_async_setup;
/* register ourselves with the NTVFS subsystem. We register
under the name 'default' as we wish to be the default
backend, and also register as 'posix' */
ops.name = "default";
ret = register_backend("ntvfs", &ops);
ops.name = "posix";
ret = register_backend("ntvfs", &ops);
if (!NT_STATUS_IS_OK(ret)) {
DEBUG(0,("Failed to register POSIX backend!\n"));
}
return ret;
}
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