1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
|
/*
Unix SMB/CIFS implementation.
POSIX NTVFS backend - unlink
Copyright (C) Andrew Tridgell 2004
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"
#include "vfs_posix.h"
#include "system/dir.h"
/*
unlink a stream
*/
static NTSTATUS pvfs_unlink_stream(struct pvfs_state *pvfs,
struct ntvfs_request *req,
struct pvfs_filename *name,
uint16_t attrib)
{
NTSTATUS status;
struct odb_lock *lck;
if (!name->stream_exists) {
return NT_STATUS_OBJECT_NAME_NOT_FOUND;
}
/* make sure its matches the given attributes */
status = pvfs_match_attrib(pvfs, name, attrib, 0);
if (!NT_STATUS_IS_OK(status)) {
return status;
}
status = pvfs_can_delete(pvfs, req, name, &lck);
if (!NT_STATUS_IS_OK(status)) {
return status;
}
return pvfs_stream_delete(pvfs, name, -1);
}
/*
unlink one file
*/
static NTSTATUS pvfs_unlink_one(struct pvfs_state *pvfs,
struct ntvfs_request *req,
const char *unix_path,
const char *fname, uint32_t attrib)
{
struct pvfs_filename *name;
NTSTATUS status;
struct odb_lock *lck;
/* get a pvfs_filename object */
status = pvfs_resolve_partial(pvfs, req,
unix_path, fname, &name);
if (!NT_STATUS_IS_OK(status)) {
return status;
}
/* make sure its matches the given attributes */
status = pvfs_match_attrib(pvfs, name, attrib, 0);
if (!NT_STATUS_IS_OK(status)) {
talloc_free(name);
return status;
}
status = pvfs_can_delete(pvfs, req, name, &lck);
if (!NT_STATUS_IS_OK(status)) {
talloc_free(name);
return status;
}
if (name->dos.attrib & FILE_ATTRIBUTE_DIRECTORY) {
talloc_free(name);
return NT_STATUS_FILE_IS_A_DIRECTORY;
}
if (name->st.st_nlink == 1) {
status = pvfs_xattr_unlink_hook(pvfs, name->full_name);
if (!NT_STATUS_IS_OK(status)) {
return status;
}
}
/* finally try the actual unlink */
if (unlink(name->full_name) == -1) {
status = pvfs_map_errno(pvfs, errno);
}
if (NT_STATUS_IS_OK(status)) {
notify_trigger(pvfs->notify_context,
NOTIFY_ACTION_REMOVED,
FILE_NOTIFY_CHANGE_FILE_NAME,
name->full_name);
}
talloc_free(name);
return status;
}
/*
delete a file - the dirtype specifies the file types to include in the search.
The name can contain CIFS wildcards, but rarely does (except with OS/2 clients)
*/
NTSTATUS pvfs_unlink(struct ntvfs_module_context *ntvfs,
struct ntvfs_request *req,
union smb_unlink *unl)
{
struct pvfs_state *pvfs = ntvfs->private_data;
struct pvfs_dir *dir;
NTSTATUS status;
uint32_t total_deleted=0;
struct pvfs_filename *name;
const char *fname;
off_t ofs;
/* resolve the cifs name to a posix name */
status = pvfs_resolve_name(pvfs, req, unl->unlink.in.pattern,
PVFS_RESOLVE_WILDCARD | PVFS_RESOLVE_STREAMS, &name);
if (!NT_STATUS_IS_OK(status)) {
return status;
}
if (!name->exists && !name->has_wildcard) {
return NT_STATUS_OBJECT_NAME_NOT_FOUND;
}
if (name->exists &&
(name->dos.attrib & FILE_ATTRIBUTE_DIRECTORY)) {
return NT_STATUS_FILE_IS_A_DIRECTORY;
}
if (name->stream_name) {
return pvfs_unlink_stream(pvfs, req, name, unl->unlink.in.attrib);
}
/* get list of matching files */
status = pvfs_list_start(pvfs, name, req, &dir);
if (!NT_STATUS_IS_OK(status)) {
return status;
}
status = NT_STATUS_NO_SUCH_FILE;
ofs = 0;
while ((fname = pvfs_list_next(dir, &ofs))) {
/* this seems to be a special case */
if ((unl->unlink.in.attrib & FILE_ATTRIBUTE_DIRECTORY) &&
(ISDOT(fname) || ISDOTDOT(fname))) {
return NT_STATUS_OBJECT_NAME_INVALID;
}
status = pvfs_unlink_one(pvfs, req, pvfs_list_unix_path(dir), fname, unl->unlink.in.attrib);
if (NT_STATUS_IS_OK(status)) {
total_deleted++;
}
}
if (total_deleted > 0) {
status = NT_STATUS_OK;
}
return status;
}
|
