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
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
|
/*
Unix SMB/CIFS implementation.
POSIX NTVFS backend - fsinfo
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 3 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, see <http://www.gnu.org/licenses/>.
*/
#include "includes.h"
#include "vfs_posix.h"
#include "librpc/gen_ndr/xattr.h"
#include "librpc/ndr/libndr.h"
/* We use libblkid out of e2fsprogs to identify UUID of a volume */
#ifdef HAVE_LIBBLKID
#include <blkid/blkid.h>
#endif
static NTSTATUS pvfs_blkid_fs_uuid(struct pvfs_state *pvfs, struct stat *st, struct GUID *uuid)
{
#ifdef HAVE_LIBBLKID
NTSTATUS status;
char *uuid_value = NULL;
char *devname = NULL;
devname = blkid_devno_to_devname(st->st_dev);
if (!devname) {
ZERO_STRUCTP(uuid);
return NT_STATUS_OK;
}
uuid_value = blkid_get_tag_value(NULL, "UUID", devname);
free(devname);
if (!uuid_value) {
ZERO_STRUCTP(uuid);
return NT_STATUS_OK;
}
status = GUID_from_string(uuid_value, uuid);
free(uuid_value);
if (!NT_STATUS_IS_OK(status)) {
ZERO_STRUCTP(uuid);
return NT_STATUS_OK;
}
return NT_STATUS_OK;
#else
ZERO_STRUCTP(uuid);
return NT_STATUS_OK;
#endif
}
static NTSTATUS pvfs_cache_base_fs_uuid(struct pvfs_state *pvfs, struct stat *st)
{
NTSTATUS status;
struct GUID uuid;
if (pvfs->base_fs_uuid) return NT_STATUS_OK;
status = pvfs_blkid_fs_uuid(pvfs, st, &uuid);
NT_STATUS_NOT_OK_RETURN(status);
pvfs->base_fs_uuid = talloc(pvfs, struct GUID);
NT_STATUS_HAVE_NO_MEMORY(pvfs->base_fs_uuid);
*pvfs->base_fs_uuid = uuid;
return NT_STATUS_OK;
}
/*
return filesystem space info
*/
NTSTATUS pvfs_fsinfo(struct ntvfs_module_context *ntvfs,
struct ntvfs_request *req, union smb_fsinfo *fs)
{
NTSTATUS status;
struct pvfs_state *pvfs = talloc_get_type(ntvfs->private_data,
struct pvfs_state);
uint64_t blocks_free, blocks_total;
unsigned int bpunit;
struct stat st;
const uint16_t block_size = 512;
/* only some levels need the expensive sys_fsusage() call */
switch (fs->generic.level) {
case RAW_QFS_DSKATTR:
case RAW_QFS_ALLOCATION:
case RAW_QFS_SIZE_INFO:
case RAW_QFS_SIZE_INFORMATION:
case RAW_QFS_FULL_SIZE_INFORMATION:
if (sys_fsusage(pvfs->base_directory, &blocks_free, &blocks_total) == -1) {
return pvfs_map_errno(pvfs, errno);
}
break;
default:
break;
}
if (stat(pvfs->base_directory, &st) != 0) {
return NT_STATUS_DISK_CORRUPT_ERROR;
}
/* now fill in the out fields */
switch (fs->generic.level) {
case RAW_QFS_GENERIC:
return NT_STATUS_INVALID_LEVEL;
case RAW_QFS_DSKATTR:
/* we need to scale the sizes to fit */
for (bpunit=64; bpunit<0x10000; bpunit *= 2) {
if (blocks_total * (double)block_size < bpunit * 512 * 65535.0) {
break;
}
}
fs->dskattr.out.blocks_per_unit = bpunit;
fs->dskattr.out.block_size = block_size;
fs->dskattr.out.units_total = (blocks_total * (double)block_size) / (bpunit * 512);
fs->dskattr.out.units_free = (blocks_free * (double)block_size) / (bpunit * 512);
/* we must return a maximum of 2G to old DOS systems, or they get very confused */
if (bpunit > 64 && req->ctx->protocol <= PROTOCOL_LANMAN2) {
fs->dskattr.out.blocks_per_unit = 64;
fs->dskattr.out.units_total = 0xFFFF;
fs->dskattr.out.units_free = 0xFFFF;
}
return NT_STATUS_OK;
case RAW_QFS_ALLOCATION:
fs->allocation.out.fs_id = st.st_dev;
fs->allocation.out.total_alloc_units = blocks_total;
fs->allocation.out.avail_alloc_units = blocks_free;
fs->allocation.out.sectors_per_unit = 1;
fs->allocation.out.bytes_per_sector = block_size;
return NT_STATUS_OK;
case RAW_QFS_VOLUME:
fs->volume.out.serial_number = st.st_ino;
fs->volume.out.volume_name.s = pvfs->share_name;
return NT_STATUS_OK;
case RAW_QFS_VOLUME_INFO:
case RAW_QFS_VOLUME_INFORMATION:
unix_to_nt_time(&fs->volume_info.out.create_time, st.st_ctime);
fs->volume_info.out.serial_number = st.st_ino;
fs->volume_info.out.volume_name.s = pvfs->share_name;
return NT_STATUS_OK;
case RAW_QFS_SIZE_INFO:
case RAW_QFS_SIZE_INFORMATION:
fs->size_info.out.total_alloc_units = blocks_total;
fs->size_info.out.avail_alloc_units = blocks_free;
fs->size_info.out.sectors_per_unit = 1;
fs->size_info.out.bytes_per_sector = block_size;
return NT_STATUS_OK;
case RAW_QFS_DEVICE_INFO:
case RAW_QFS_DEVICE_INFORMATION:
fs->device_info.out.device_type = 0;
fs->device_info.out.characteristics = 0;
return NT_STATUS_OK;
case RAW_QFS_ATTRIBUTE_INFO:
case RAW_QFS_ATTRIBUTE_INFORMATION:
fs->attribute_info.out.fs_attr = pvfs->fs_attribs;
fs->attribute_info.out.max_file_component_length = 255;
fs->attribute_info.out.fs_type.s = ntvfs->ctx->fs_type;
return NT_STATUS_OK;
case RAW_QFS_QUOTA_INFORMATION:
ZERO_STRUCT(fs->quota_information.out.unknown);
fs->quota_information.out.quota_soft = 0;
fs->quota_information.out.quota_hard = 0;
fs->quota_information.out.quota_flags = 0;
return NT_STATUS_OK;
case RAW_QFS_FULL_SIZE_INFORMATION:
fs->full_size_information.out.total_alloc_units = blocks_total;
fs->full_size_information.out.call_avail_alloc_units = blocks_free;
fs->full_size_information.out.actual_avail_alloc_units = blocks_free;
fs->full_size_information.out.sectors_per_unit = 1;
fs->full_size_information.out.bytes_per_sector = block_size;
return NT_STATUS_OK;
case RAW_QFS_OBJECTID_INFORMATION:
ZERO_STRUCT(fs->objectid_information.out.guid);
ZERO_STRUCT(fs->objectid_information.out.unknown);
status = pvfs_cache_base_fs_uuid(pvfs, &st);
NT_STATUS_NOT_OK_RETURN(status);
fs->objectid_information.out.guid = *pvfs->base_fs_uuid;
return NT_STATUS_OK;
case RAW_QFS_SECTOR_SIZE_INFORMATION:
fs->sector_size_info.out.logical_bytes_per_sector = block_size;
fs->sector_size_info.out.phys_bytes_per_sector_atomic
= block_size;
fs->sector_size_info.out.phys_bytes_per_sector_perf
= block_size;
fs->sector_size_info.out.fs_effective_phys_bytes_per_sector_atomic
= block_size;
fs->sector_size_info.out.flags
= QFS_SSINFO_FLAGS_ALIGNED_DEVICE
| QFS_SSINFO_FLAGS_PARTITION_ALIGNED_ON_DEVICE;
fs->sector_size_info.out.byte_off_sector_align = 0;
fs->sector_size_info.out.byte_off_partition_align = 0;
return NT_STATUS_OK;
default:
break;
}
return NT_STATUS_INVALID_LEVEL;
}
|
