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/*
Unix SMB/CIFS implementation.
error packet handling
Copyright (C) Andrew Tridgell 1992-1998
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"
/* these can be set by some functions to override the error codes */
int unix_ERR_class=SMB_SUCCESS;
int unix_ERR_code=0;
NTSTATUS unix_ERR_ntstatus = NT_STATUS_OK;
/* From lib/error.c */
extern struct unix_error_map unix_dos_nt_errmap[];
/****************************************************************************
Create an error packet from a cached error.
****************************************************************************/
int cached_error_packet(char *outbuf,files_struct *fsp,int line,const char *file)
{
write_bmpx_struct *wbmpx = fsp->wbmpx_ptr;
int32 eclass = wbmpx->wr_errclass;
int32 err = wbmpx->wr_error;
/* We can now delete the auxiliary struct */
free((char *)wbmpx);
fsp->wbmpx_ptr = NULL;
return error_packet(outbuf,NT_STATUS_OK,eclass,err,line,file);
}
/****************************************************************************
Create an error packet from errno.
****************************************************************************/
int unix_error_packet(char *outbuf,int def_class,uint32 def_code,
int line, const char *file)
{
int eclass=def_class;
int ecode=def_code;
NTSTATUS ntstatus = NT_STATUS_OK;
int i=0;
if (unix_ERR_class != SMB_SUCCESS) {
eclass = unix_ERR_class;
ecode = unix_ERR_code;
ntstatus = unix_ERR_ntstatus;
unix_ERR_class = SMB_SUCCESS;
unix_ERR_code = 0;
unix_ERR_ntstatus = NT_STATUS_OK;
} else {
while (unix_dos_nt_errmap[i].dos_class != 0) {
if (unix_dos_nt_errmap[i].unix_error == errno) {
eclass = unix_dos_nt_errmap[i].dos_class;
ecode = unix_dos_nt_errmap[i].dos_code;
ntstatus = unix_dos_nt_errmap[i].nt_error;
break;
}
i++;
}
}
return error_packet(outbuf,ntstatus,eclass,ecode,line,file);
}
/****************************************************************************
Create an error packet. Normally called using the ERROR() macro.
****************************************************************************/
int error_packet(char *outbuf,NTSTATUS ntstatus,
uint8 eclass,uint32 ecode,int line, const char *file)
{
int outsize = set_message(outbuf,0,0,True);
extern uint32 global_client_caps;
if (errno != 0)
DEBUG(3,("error string = %s\n",strerror(errno)));
/*
* We can explicitly force 32 bit error codes even when the
* parameter "nt status" is set to no by pre-setting the
* FLAGS2_32_BIT_ERROR_CODES bit in the smb_flg2 outbuf.
* This is to allow work arounds for client bugs that are needed
* when talking with clients that normally expect nt status codes. JRA.
*/
if ((lp_nt_status_support() || (SVAL(outbuf,smb_flg2) & FLAGS2_32_BIT_ERROR_CODES)) && (global_client_caps & CAP_STATUS32)) {
if (NT_STATUS_V(ntstatus) == 0 && eclass)
ntstatus = dos_to_ntstatus(eclass, ecode);
SIVAL(outbuf,smb_rcls,NT_STATUS_V(ntstatus));
SSVAL(outbuf,smb_flg2, SVAL(outbuf,smb_flg2)|FLAGS2_32_BIT_ERROR_CODES);
DEBUG(3,("error packet at %s(%d) cmd=%d (%s) %s\n",
file, line,
(int)CVAL(outbuf,smb_com),
smb_fn_name(CVAL(outbuf,smb_com)),
nt_errstr(ntstatus)));
return outsize;
}
if (eclass == 0 && NT_STATUS_V(ntstatus))
ntstatus_to_dos(ntstatus, &eclass, &ecode);
SSVAL(outbuf,smb_flg2, SVAL(outbuf,smb_flg2)&~FLAGS2_32_BIT_ERROR_CODES);
SSVAL(outbuf,smb_rcls,eclass);
SSVAL(outbuf,smb_err,ecode);
DEBUG(3,("error packet at %s(%d) cmd=%d (%s) eclass=%d ecode=%d\n",
file, line,
(int)CVAL(outbuf,smb_com),
smb_fn_name(CVAL(outbuf,smb_com)),
eclass,
ecode));
return outsize;
}
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