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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 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 "includes.h"
/****************************************************************************
Open a file with a share mode.
****************************************************************************/
files_struct *open_fake_file_shared1(enum FAKE_FILE_TYPE fake_file_type, connection_struct *conn,char *fname,
SMB_STRUCT_STAT *psbuf,
uint32 desired_access,
int share_mode,int ofun, uint32 new_dos_attr, int oplock_request,
int *Access,int *action)
{
extern struct current_user current_user;
int flags=0;
files_struct *fsp = NULL;
if (fake_file_type == 0) {
return open_file_shared1(conn,fname,psbuf,desired_access,
share_mode,ofun,new_dos_attr,
oplock_request,Access,action);
}
/* access check */
if (current_user.uid != 0) {
DEBUG(1,("access_denied to service[%s] file[%s] user[%s]\n",
lp_servicename(SNUM(conn)),fname,conn->user));
errno = EACCES;
return NULL;
}
fsp = file_new(conn);
if(!fsp)
return NULL;
DEBUG(5,("open_fake_file_shared1: fname = %s, FID = %d, share_mode = %x, ofun = %x, oplock request = %d\n",
fname, fsp->fnum, share_mode, ofun, oplock_request ));
if (!check_name(fname,conn)) {
file_free(fsp);
return NULL;
}
fsp->fd = -1;
fsp->mode = psbuf->st_mode;
fsp->inode = psbuf->st_ino;
fsp->dev = psbuf->st_dev;
fsp->vuid = current_user.vuid;
fsp->size = psbuf->st_size;
fsp->pos = -1;
fsp->can_lock = True;
fsp->can_read = ((flags & O_WRONLY)==0);
fsp->can_write = ((flags & (O_WRONLY|O_RDWR))!=0);
fsp->share_mode = 0;
fsp->desired_access = desired_access;
fsp->print_file = False;
fsp->modified = False;
fsp->oplock_type = NO_OPLOCK;
fsp->sent_oplock_break = NO_BREAK_SENT;
fsp->is_directory = False;
fsp->is_stat = False;
fsp->directory_delete_on_close = False;
fsp->conn = conn;
string_set(&fsp->fsp_name,fname);
fsp->wcp = NULL; /* Write cache pointer. */
fsp->fake_file_handle = init_fake_file_handle(fake_file_type);
if (fsp->fake_file_handle==NULL) {
file_free(fsp);
return NULL;
}
conn->num_files_open++;
return fsp;
}
static FAKE_FILE fake_files[] = {
#ifdef WITH_QUOTAS
{FAKE_FILE_NAME_QUOTA, FAKE_FILE_TYPE_QUOTA, init_quota_handle, destroy_quota_handle},
#endif /* WITH_QUOTAS */
{NULL, FAKE_FILE_TYPE_NONE, NULL, NULL }
};
int is_fake_file(char *fname)
{
int i;
if (!fname)
return 0;
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;
}
}
return FAKE_FILE_TYPE_NONE;
}
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 =(FAKE_FILE_HANDLE *)talloc_zero(mem_ctx, sizeof(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;
}
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;
}
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