source: trunk-3.0/source/smbd/error.c@ 103

Last change on this file since 103 was 62, checked in by Paul Smedley, 18 years ago

Update source to 3.0.25c level
File size: 5.3 KB
Line 
1/*
2 Unix SMB/CIFS implementation.
3 error packet handling
4 Copyright (C) Andrew Tridgell 1992-1998
5
6 This program is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 2 of the License, or
9 (at your option) any later version.
10
11 This program is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
15
16 You should have received a copy of the GNU General Public License
17 along with this program; if not, write to the Free Software
18 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
19*/
20
21#include "includes.h"
22
23/* From lib/error.c */
24extern struct unix_error_map unix_dos_nt_errmap[];
25
26extern uint32 global_client_caps;
27
28/****************************************************************************
29 Create an error packet from a cached error.
30****************************************************************************/
31
32int cached_error_packet(char *outbuf,files_struct *fsp,int line,const char *file)
33{
34 write_bmpx_struct *wbmpx = fsp->wbmpx_ptr;
35 int32 eclass = wbmpx->wr_errclass;
36 int32 err = wbmpx->wr_error;
37 NTSTATUS ntstatus = wbmpx->wr_status;
38
39 /* We can now delete the auxiliary struct */
40 SAFE_FREE(fsp->wbmpx_ptr);
41 return error_packet(outbuf,eclass,err,ntstatus,line,file);
42}
43
44/****************************************************************************
45 Create an error packet from errno.
46****************************************************************************/
47
48int unix_error_packet(char *outbuf,int def_class,uint32 def_code, NTSTATUS def_status, int line, const char *file)
49{
50 int eclass=def_class;
51 int ecode=def_code;
52 NTSTATUS ntstatus = def_status;
53 int i=0;
54
55 if (errno != 0) {
56 DEBUG(3,("unix_error_packet: error string = %s\n",strerror(errno)));
57
58 while (unix_dos_nt_errmap[i].dos_class != 0) {
59 if (unix_dos_nt_errmap[i].unix_error == errno) {
60 eclass = unix_dos_nt_errmap[i].dos_class;
61 ecode = unix_dos_nt_errmap[i].dos_code;
62 ntstatus = unix_dos_nt_errmap[i].nt_error;
63 break;
64 }
65 i++;
66 }
67 }
68
69 return error_packet(outbuf,eclass,ecode,ntstatus,line,file);
70}
71
72BOOL use_nt_status(void)
73{
74 return lp_nt_status_support() && (global_client_caps & CAP_STATUS32);
75}
76
77/****************************************************************************
78 Create an error packet. Normally called using the ERROR() macro.
79 Setting eclass and ecode only and status to NT_STATUS_OK forces DOS errors.
80 Setting status only and eclass and ecode to zero forces NT errors.
81 If the override errors are set they take precedence over any passed in values.
82****************************************************************************/
83
84void error_packet_set(char *outbuf, uint8 eclass, uint32 ecode, NTSTATUS ntstatus, int line, const char *file)
85{
86 BOOL force_nt_status = False;
87 BOOL force_dos_status = False;
88
89 if (eclass == (uint8)-1) {
90 force_nt_status = True;
91 } else if (NT_STATUS_IS_DOS(ntstatus)) {
92 force_dos_status = True;
93 }
94
95 if (force_nt_status || (!force_dos_status && lp_nt_status_support() && (global_client_caps & CAP_STATUS32))) {
96 /* We're returning an NT error. */
97 if (NT_STATUS_V(ntstatus) == 0 && eclass) {
98 ntstatus = dos_to_ntstatus(eclass, ecode);
99 }
100 SIVAL(outbuf,smb_rcls,NT_STATUS_V(ntstatus));
101 SSVAL(outbuf,smb_flg2, SVAL(outbuf,smb_flg2)|FLAGS2_32_BIT_ERROR_CODES);
102 DEBUG(3,("error packet at %s(%d) cmd=%d (%s) %s\n",
103 file, line,
104 (int)CVAL(outbuf,smb_com),
105 smb_fn_name(CVAL(outbuf,smb_com)),
106 nt_errstr(ntstatus)));
107 } else {
108 /* We're returning a DOS error only. */
109 if (NT_STATUS_IS_DOS(ntstatus)) {
110 eclass = NT_STATUS_DOS_CLASS(ntstatus);
111 ecode = NT_STATUS_DOS_CODE(ntstatus);
112 } else if (eclass == 0 && NT_STATUS_V(ntstatus)) {
113 ntstatus_to_dos(ntstatus, &eclass, &ecode);
114 }
115
116 SSVAL(outbuf,smb_flg2, SVAL(outbuf,smb_flg2)&~FLAGS2_32_BIT_ERROR_CODES);
117 SSVAL(outbuf,smb_rcls,eclass);
118 SSVAL(outbuf,smb_err,ecode);
119
120 DEBUG(3,("error packet at %s(%d) cmd=%d (%s) eclass=%d ecode=%d\n",
121 file, line,
122 (int)CVAL(outbuf,smb_com),
123 smb_fn_name(CVAL(outbuf,smb_com)),
124 eclass,
125 ecode));
126 }
127}
128
129int error_packet(char *outbuf, uint8 eclass, uint32 ecode, NTSTATUS ntstatus, int line, const char *file)
130{
131 int outsize = set_message(outbuf,0,0,True);
132 error_packet_set(outbuf, eclass, ecode, ntstatus, line, file);
133 return outsize;
134}
135
136/*******************************************************************************
137 Special error map processing needed for returning DOS errors on open calls.
138*******************************************************************************/
139
140int error_open(char *outbuf, NTSTATUS status, int line, const char *file)
141{
142 if (NT_STATUS_EQUAL(status, NT_STATUS_OBJECT_NAME_COLLISION)) {
143 /*
144 * We hit an existing file, and if we're returning DOS
145 * error codes OBJECT_NAME_COLLISION would map to
146 * ERRDOS/183, we need to return ERRDOS/80, see bug
147 * 4852.
148 */
149 return error_packet(outbuf, ERRDOS, ERRfilexists,
150 NT_STATUS_OBJECT_NAME_COLLISION, line, file);
151 }
152 return error_packet(outbuf,0,0,status,line,file);
153}
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