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6fd4813ece
bytes returned" is less than the amount we want
to send, return what we can and set STATUS_BUFFER_OVERFLOW
(doserror ERRDOS,ERRbufferoverflow). Required by
OS/2 to handle EA's that are too large. It's hard
to test this in Samba4 smbtorture as the max data
bytes returned is hard coded at 0xffff (as it is
in the Samba3 client libraries also). I used a
custom version of Samba4 smbtorture to test this
out. Might add a "max data bytes" param to make
this testable in the build farm. Confirmed by
"Guenter Kukkukk (sambaos2)" <sambaos2@kukkukk.com>
and Andreas Taegener <atsamba11@eideltown.de>
that this fixes the issue.
Jeremy.
(This used to be commit ff2f1202b7)
135 lines
4.5 KiB
C
135 lines
4.5 KiB
C
/*
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Unix SMB/CIFS implementation.
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error packet handling
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Copyright (C) Andrew Tridgell 1992-1998
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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#include "includes.h"
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/* From lib/error.c */
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extern struct unix_error_map unix_dos_nt_errmap[];
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extern uint32 global_client_caps;
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/****************************************************************************
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Create an error packet from a cached error.
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****************************************************************************/
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int cached_error_packet(char *outbuf,files_struct *fsp,int line,const char *file)
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{
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write_bmpx_struct *wbmpx = fsp->wbmpx_ptr;
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int32 eclass = wbmpx->wr_errclass;
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int32 err = wbmpx->wr_error;
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NTSTATUS ntstatus = wbmpx->wr_status;
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/* We can now delete the auxiliary struct */
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SAFE_FREE(fsp->wbmpx_ptr);
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return error_packet(outbuf,eclass,err,ntstatus,line,file);
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}
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/****************************************************************************
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Create an error packet from errno.
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****************************************************************************/
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int unix_error_packet(char *outbuf,int def_class,uint32 def_code, NTSTATUS def_status, int line, const char *file)
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{
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int eclass=def_class;
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int ecode=def_code;
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NTSTATUS ntstatus = def_status;
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int i=0;
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if (errno != 0) {
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DEBUG(3,("unix_error_packet: error string = %s\n",strerror(errno)));
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while (unix_dos_nt_errmap[i].dos_class != 0) {
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if (unix_dos_nt_errmap[i].unix_error == errno) {
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eclass = unix_dos_nt_errmap[i].dos_class;
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ecode = unix_dos_nt_errmap[i].dos_code;
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ntstatus = unix_dos_nt_errmap[i].nt_error;
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break;
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}
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i++;
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}
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}
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return error_packet(outbuf,eclass,ecode,ntstatus,line,file);
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}
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BOOL use_nt_status(void)
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{
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return lp_nt_status_support() && (global_client_caps & CAP_STATUS32);
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}
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/****************************************************************************
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Create an error packet. Normally called using the ERROR() macro.
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Setting eclass and ecode only and status to NT_STATUS_OK forces DOS errors.
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Setting status only and eclass and ecode to zero forces NT errors.
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If the override errors are set they take precedence over any passed in values.
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****************************************************************************/
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void error_packet_set(char *outbuf, uint8 eclass, uint32 ecode, NTSTATUS ntstatus, int line, const char *file)
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{
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BOOL force_nt_status = False;
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BOOL force_dos_status = False;
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if (eclass == (uint8)-1) {
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force_nt_status = True;
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} else if (NT_STATUS_IS_DOS(ntstatus)) {
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force_dos_status = True;
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}
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if (force_nt_status || (!force_dos_status && lp_nt_status_support() && (global_client_caps & CAP_STATUS32))) {
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/* We're returning an NT error. */
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if (NT_STATUS_V(ntstatus) == 0 && eclass) {
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ntstatus = dos_to_ntstatus(eclass, ecode);
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}
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SIVAL(outbuf,smb_rcls,NT_STATUS_V(ntstatus));
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SSVAL(outbuf,smb_flg2, SVAL(outbuf,smb_flg2)|FLAGS2_32_BIT_ERROR_CODES);
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DEBUG(3,("error packet at %s(%d) cmd=%d (%s) %s\n",
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file, line,
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(int)CVAL(outbuf,smb_com),
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smb_fn_name(CVAL(outbuf,smb_com)),
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nt_errstr(ntstatus)));
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} else {
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/* We're returning a DOS error only. */
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if (NT_STATUS_IS_DOS(ntstatus)) {
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eclass = NT_STATUS_DOS_CLASS(ntstatus);
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ecode = NT_STATUS_DOS_CODE(ntstatus);
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} else if (eclass == 0 && NT_STATUS_V(ntstatus)) {
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ntstatus_to_dos(ntstatus, &eclass, &ecode);
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}
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SSVAL(outbuf,smb_flg2, SVAL(outbuf,smb_flg2)&~FLAGS2_32_BIT_ERROR_CODES);
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SSVAL(outbuf,smb_rcls,eclass);
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SSVAL(outbuf,smb_err,ecode);
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DEBUG(3,("error packet at %s(%d) cmd=%d (%s) eclass=%d ecode=%d\n",
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file, line,
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(int)CVAL(outbuf,smb_com),
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smb_fn_name(CVAL(outbuf,smb_com)),
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eclass,
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ecode));
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}
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}
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int error_packet(char *outbuf, uint8 eclass, uint32 ecode, NTSTATUS ntstatus, int line, const char *file)
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{
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int outsize = set_message(outbuf,0,0,True);
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error_packet_set(outbuf, eclass, ecode, ntstatus, line, file);
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return outsize;
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}
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