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/*
Unix SMB/CIFS implementation.
POSIX NTVFS backend - directory search functions
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.
*/
#include "include/includes.h"
#include "vfs_posix.h"
/*
fill in a single search result for a given info level
*/
static NTSTATUS fill_search_info(struct pvfs_state *pvfs,
enum smb_search_level level,
const char *unix_path,
const char *name,
uint16_t search_attrib,
uint32_t dir_index,
union smb_search_data *file)
{
struct pvfs_file_info *finfo;
NTSTATUS status;
finfo = talloc_p((TALLOC_CTX *)file, struct pvfs_file_info);
if (!finfo) {
return NT_STATUS_NO_MEMORY;
}
status = pvfs_relative_file_info_cs(pvfs, unix_path, name, finfo);
if (!NT_STATUS_IS_OK(status)) {
talloc_free(finfo);
return status;
}
switch (level) {
case RAW_SEARCH_BOTH_DIRECTORY_INFO:
file->both_directory_info.file_index = dir_index;
file->both_directory_info.create_time = finfo->create_time;
file->both_directory_info.access_time = finfo->access_time;
file->both_directory_info.write_time = finfo->write_time;
file->both_directory_info.change_time = finfo->change_time;
file->both_directory_info.size = finfo->size;
file->both_directory_info.alloc_size = finfo->alloc_size;
file->both_directory_info.attrib = finfo->attrib;
file->both_directory_info.ea_size = finfo->ea_size;
file->both_directory_info.short_name.s = pvfs_short_name(pvfs, (TALLOC_CTX *)file,
unix_path, name);
file->both_directory_info.name.s = name;
break;
}
talloc_free(finfo);
return NT_STATUS_OK;
}
/*
return the next available search handle
*/
static NTSTATUS pvfs_next_search_handle(struct pvfs_state *pvfs, uint16_t *handle)
{
struct pvfs_search_state *search;
if (pvfs->search.num_active_searches >= 0x10000) {
return NT_STATUS_INSUFFICIENT_RESOURCES;
}
(*handle) = pvfs->search.next_search_handle;
for (search=pvfs->search.open_searches;search;search=search->next) {
if (*handle == search->handle) {
*handle = ((*handle)+1) & 0xFFFF;
continue;
}
}
pvfs->search.next_search_handle = ((*handle)+1) & 0xFFFF;
return NT_STATUS_OK;
}
/*
list files in a directory matching a wildcard pattern
*/
NTSTATUS pvfs_search_first(struct smbsrv_request *req, union smb_search_first *io,
void *search_private,
BOOL (*callback)(void *, union smb_search_data *))
{
struct pvfs_dir *dir;
struct pvfs_state *pvfs = req->tcon->ntvfs_private;
struct pvfs_search_state *search;
union smb_search_data *file;
uint16_t max_count, reply_count;
uint16_t search_attrib;
const char *pattern;
int i;
NTSTATUS status;
struct pvfs_filename *name;
switch (io->generic.level) {
case RAW_SEARCH_SEARCH:
max_count = io->search_first.in.max_count;
search_attrib = io->search_first.in.search_attrib;
pattern = io->search_first.in.pattern;
break;
case RAW_SEARCH_STANDARD:
case RAW_SEARCH_EA_SIZE:
case RAW_SEARCH_DIRECTORY_INFO:
case RAW_SEARCH_FULL_DIRECTORY_INFO:
case RAW_SEARCH_NAME_INFO:
case RAW_SEARCH_BOTH_DIRECTORY_INFO:
case RAW_SEARCH_ID_FULL_DIRECTORY_INFO:
case RAW_SEARCH_ID_BOTH_DIRECTORY_INFO:
case RAW_SEARCH_UNIX_INFO:
max_count = io->t2ffirst.in.max_count;
search_attrib = io->t2ffirst.in.search_attrib;
pattern = io->t2ffirst.in.pattern;
break;
case RAW_SEARCH_FCLOSE:
case RAW_SEARCH_GENERIC:
DEBUG(0,("WARNING: Invalid search class %d in pvfs_search_first\n", io->generic.level));
return NT_STATUS_INVALID_INFO_CLASS;
}
/* resolve the cifs name to a posix name */
status = pvfs_resolve_name(pvfs, req, pattern, 0, &name);
if (!NT_STATUS_IS_OK(status)) {
return status;
}
if (!name->has_wildcard && !name->exists) {
return NT_STATUS_OBJECT_NAME_NOT_FOUND;
}
/* we initially make search a child of the request, then if we
need to keep it long term we steal it for the private
structure */
search = talloc_p(req, struct pvfs_search_state);
if (!search) {
return NT_STATUS_NO_MEMORY;
}
dir = talloc_p(search, struct pvfs_dir);
if (!dir) {
return NT_STATUS_NO_MEMORY;
}
/* do the actual directory listing */
status = pvfs_list(pvfs, name, dir);
if (!NT_STATUS_IS_OK(status)) {
return status;
}
/* we need to give a handle back to the client so it
can continue a search */
status = pvfs_next_search_handle(pvfs, &search->handle);
if (!NT_STATUS_IS_OK(status)) {
return status;
}
search->dir = dir;
search->current_index = 0;
search->search_attrib = search_attrib;
if (dir->count < max_count) {
max_count = dir->count;
}
file = talloc_p(req, union smb_search_data);
if (!file) {
return NT_STATUS_NO_MEMORY;
}
/* note that fill_search_info() can fail, if for example a
file disappears during a search or we don't have sufficient
permissions to stat() it, or the search_attrib does not
match the files attribute. In that case the name is ignored
and the search continues. */
for (i=reply_count=0; i < dir->count && reply_count < max_count;i++) {
status = fill_search_info(pvfs, io->generic.level, dir->unix_path, dir->names[i],
search_attrib, i, file);
if (NT_STATUS_IS_OK(status)) {
if (!callback(search_private, file)) {
break;
}
reply_count++;
}
}
/* not matching any entries is an error */
if (reply_count == 0) {
return NT_STATUS_NO_MORE_ENTRIES;
}
search->current_index = i;
if (io->generic.level == RAW_SEARCH_SEARCH) {
io->search_first.out.count = reply_count;
DEBUG(0,("TODO: handle RAW_SEARCH_SEARCH continue\n"));
} else {
io->t2ffirst.out.count = reply_count;
io->t2ffirst.out.handle = search->handle;
io->t2ffirst.out.end_of_search = (i == dir->count) ? 1 : 0;
/* work out if we are going to keep the search state
and allow for a search continue */
if ((io->t2ffirst.in.flags & FLAG_TRANS2_FIND_CLOSE) ||
((io->t2ffirst.in.flags & FLAG_TRANS2_FIND_CLOSE_IF_END) && (i == dir->count))) {
talloc_free(search);
} else {
pvfs->search.num_active_searches++;
pvfs->search.next_search_handle++;
talloc_steal(pvfs, search);
DLIST_ADD(pvfs->search.open_searches, search);
}
}
return NT_STATUS_OK;
}
/* continue a search */
NTSTATUS pvfs_search_next(struct smbsrv_request *req, union smb_search_next *io,
void *search_private,
BOOL (*callback)(void *, union smb_search_data *))
{
return NT_STATUS_NOT_IMPLEMENTED;
}
/* close a search */
NTSTATUS pvfs_search_close(struct smbsrv_request *req, union smb_search_close *io)
{
return NT_STATUS_NOT_IMPLEMENTED;
}
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