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/*
Unix SMB/CIFS implementation.
FAKE FILE suppport, for faking up special files windows want access to
Copyright (C) Stefan (metze) Metzmacher 2003
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 3 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, see <http://www.gnu.org/licenses/>.
*/
#include "includes.h"
extern struct current_user current_user;
static FAKE_FILE fake_files[] = {
#ifdef WITH_QUOTAS
{FAKE_FILE_NAME_QUOTA_UNIX, FAKE_FILE_TYPE_QUOTA, init_quota_handle, destroy_quota_handle},
#endif /* WITH_QUOTAS */
{NULL, FAKE_FILE_TYPE_NONE, NULL, NULL }
};
/****************************************************************************
Create a fake file handle
****************************************************************************/
static struct _FAKE_FILE_HANDLE *init_fake_file_handle(enum FAKE_FILE_TYPE type)
{
TALLOC_CTX *mem_ctx = NULL;
FAKE_FILE_HANDLE *fh = NULL;
int i;
for (i=0;fake_files[i].name!=NULL;i++) {
if (fake_files[i].type==type) {
DEBUG(5,("init_fake_file_handle: for [%s]\n",fake_files[i].name));
if ((mem_ctx=talloc_init("fake_file_handle"))==NULL) {
DEBUG(0,("talloc_init(fake_file_handle) failed.\n"));
return NULL;
}
if ((fh =TALLOC_ZERO_P(mem_ctx, FAKE_FILE_HANDLE))==NULL) {
DEBUG(0,("TALLOC_ZERO() failed.\n"));
talloc_destroy(mem_ctx);
return NULL;
}
fh->type = type;
fh->mem_ctx = mem_ctx;
if (fake_files[i].init_pd) {
fh->pd = fake_files[i].init_pd(fh->mem_ctx);
}
fh->free_pd = fake_files[i].free_pd;
return fh;
}
}
return NULL;
}
/****************************************************************************
Does this name match a fake filename ?
****************************************************************************/
enum FAKE_FILE_TYPE is_fake_file(const char *fname)
{
#ifdef HAVE_SYS_QUOTAS
int i;
#endif
if (!fname) {
return FAKE_FILE_TYPE_NONE;
}
#ifdef HAVE_SYS_QUOTAS
for (i=0;fake_files[i].name!=NULL;i++) {
if (strncmp(fname,fake_files[i].name,strlen(fake_files[i].name))==0) {
DEBUG(5,("is_fake_file: [%s] is a fake file\n",fname));
return fake_files[i].type;
}
}
#endif
return FAKE_FILE_TYPE_NONE;
}
/****************************************************************************
Open a fake quota file with a share mode.
****************************************************************************/
NTSTATUS open_fake_file(connection_struct *conn,
enum FAKE_FILE_TYPE fake_file_type,
const char *fname,
uint32 access_mask,
files_struct **result)
{
files_struct *fsp = NULL;
NTSTATUS status;
/* access check */
if (current_user.ut.uid != 0) {
DEBUG(3, ("open_fake_file_shared: access_denied to "
"service[%s] file[%s] user[%s]\n",
lp_servicename(SNUM(conn)),fname,conn->user));
return NT_STATUS_ACCESS_DENIED;
}
status = file_new(conn, &fsp);
if(!NT_STATUS_IS_OK(status)) {
return status;
}
DEBUG(5,("open_fake_file_shared: fname = %s, FID = %d, access_mask = 0x%x\n",
fname, fsp->fnum, (unsigned int)access_mask));
fsp->conn = conn;
fsp->fh->fd = -1;
fsp->vuid = current_user.vuid;
fsp->fh->pos = -1;
fsp->can_lock = False; /* Should this be true ? - No, JRA */
fsp->access_mask = access_mask;
string_set(&fsp->fsp_name,fname);
fsp->fake_file_handle = init_fake_file_handle(fake_file_type);
if (fsp->fake_file_handle==NULL) {
file_free(fsp);
return NT_STATUS_NO_MEMORY;
}
conn->num_files_open++;
*result = fsp;
return NT_STATUS_OK;
}
void destroy_fake_file_handle(FAKE_FILE_HANDLE **fh)
{
if (!fh||!(*fh)) {
return;
}
if ((*fh)->free_pd) {
(*fh)->free_pd(&(*fh)->pd);
}
talloc_destroy((*fh)->mem_ctx);
(*fh) = NULL;
}
NTSTATUS close_fake_file(files_struct *fsp)
{
file_free(fsp);
return NT_STATUS_OK;
}
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