diff options
Diffstat (limited to 'source3/smbd/error.c')
| -rw-r--r-- | source3/smbd/error.c | 129 |
1 files changed, 129 insertions, 0 deletions
diff --git a/source3/smbd/error.c b/source3/smbd/error.c new file mode 100644 index 0000000000..2f993fb41e --- /dev/null +++ b/source3/smbd/error.c @@ -0,0 +1,129 @@ +/* + 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; + +/* 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; + unix_ERR_class = SMB_SUCCESS; + unix_ERR_code = 0; + } 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; +} |