ReactOS 0.4.15-dev-6068-g8061a6f
volume.c
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1/* NFSv4.1 client for Windows
2 * Copyright 2012 The Regents of the University of Michigan
3 *
4 * Olga Kornievskaia <aglo@umich.edu>
5 * Casey Bodley <cbodley@umich.edu>
6 *
7 * This library is free software; you can redistribute it and/or modify it
8 * under the terms of the GNU Lesser General Public License as published by
9 * the Free Software Foundation; either version 2.1 of the License, or (at
10 * your option) any later version.
11 *
12 * This library is distributed in the hope that it will be useful, but
13 * without any warranty; without even the implied warranty of merchantability
14 * or fitness for a particular purpose. See the GNU Lesser General Public
15 * License for more details.
16 *
17 * You should have received a copy of the GNU Lesser General Public License
18 * along with this library; if not, write to the Free Software Foundation,
19 * Inc., 51 Franklin Street, Fifth Floor, Boston, MA
20 */
21
22#include <windows.h>
23#include <strsafe.h>
24#include <stdio.h>
25#include <time.h>
26
27#include "nfs41_ops.h"
28#include "from_kernel.h"
29#include "upcall.h"
30#include "util.h"
31#include "daemon_debug.h"
32
33
34/* windows volume queries want size in 'units', so we have to
35 * convert the nfs space_* attributes from bytes to units */
36#define SECTORS_PER_UNIT 8
37#define BYTES_PER_SECTOR 512
38#define BYTES_PER_UNIT (SECTORS_PER_UNIT * BYTES_PER_SECTOR)
39
40#define TO_UNITS(bytes) (bytes / BYTES_PER_UNIT)
41
42#define VOLUME_CACHE_EXPIRATION 20
43
44
45/* NFS41_VOLUME_QUERY */
47{
48 int status;
49 volume_upcall_args *args = &upcall->args.volume;
50
51 status = safe_read(&buffer, &length, &args->query, sizeof(FS_INFORMATION_CLASS));
52 if (status) goto out;
53
54 dprintf(1, "parsing NFS41_VOLUME_QUERY: query=%d\n", args->query);
55out:
56 return status;
57}
58
61 IN const char *query,
62 OUT OPTIONAL PLONGLONG total_out,
63 OUT OPTIONAL PLONGLONG user_out,
64 OUT OPTIONAL PLONGLONG avail_out)
65{
66 nfs41_file_info info = { 0 };
67 nfs41_superblock *superblock = state->file.fh.superblock;
69
71 /* check superblock for cached attributes */
72 if (time(NULL) <= superblock->cache_expiration) {
73 info.space_total = superblock->space_total;
74 info.space_avail = superblock->space_avail;
75 info.space_free = superblock->space_free;
77
78 dprintf(2, "%s cached: %llu user, %llu free of %llu total\n",
79 query, info.space_avail, info.space_free, info.space_total);
80 }
82
83 if (status) {
84 bitmap4 attr_request = { 2, { 0, FATTR4_WORD1_SPACE_AVAIL |
86
87 /* query the space_ attributes of the filesystem */
88 status = nfs41_getattr(state->session, &state->file,
89 &attr_request, &info);
90 if (status) {
91 eprintf("nfs41_getattr() failed with %s\n",
94 goto out;
95 }
96
98 superblock->space_total = info.space_total;
99 superblock->space_avail = info.space_avail;
100 superblock->space_free = info.space_free;
101 superblock->cache_expiration = time(NULL) + VOLUME_CACHE_EXPIRATION;
103
104 dprintf(2, "%s: %llu user, %llu free of %llu total\n",
105 query, info.space_avail, info.space_free, info.space_total);
106 }
107
108 if (total_out) *total_out = TO_UNITS(info.space_total);
109 if (user_out) *user_out = TO_UNITS(info.space_avail);
110 if (avail_out) *avail_out = TO_UNITS(info.space_free);
111out:
112 return status;
113}
114
116{
117 volume_upcall_args *args = &upcall->args.volume;
118 int status = NO_ERROR;
119
120 switch (args->query) {
122 args->len = sizeof(args->info.size);
123 args->info.size.SectorsPerAllocationUnit = SECTORS_PER_UNIT;
124 args->info.size.BytesPerSector = BYTES_PER_SECTOR;
125
127 "FileFsSizeInformation",
128 &args->info.size.TotalAllocationUnits.QuadPart,
129 &args->info.size.AvailableAllocationUnits.QuadPart,
130 NULL);
131 break;
132
134 args->len = sizeof(args->info.fullsize);
135 args->info.fullsize.SectorsPerAllocationUnit = SECTORS_PER_UNIT;
136 args->info.fullsize.BytesPerSector = BYTES_PER_SECTOR;
137
139 "FileFsFullSizeInformation",
140 &args->info.fullsize.TotalAllocationUnits.QuadPart,
141 &args->info.fullsize.CallerAvailableAllocationUnits.QuadPart,
142 &args->info.fullsize.ActualAvailableAllocationUnits.QuadPart);
143 break;
144
146 args->len = sizeof(args->info.attribute);
147 nfs41_superblock_fs_attributes(upcall->state_ref->file.fh.superblock,
148 &args->info.attribute);
149 break;
150
151 default:
152 eprintf("unhandled fs query class %d\n", args->query);
154 break;
155 }
156 return status;
157}
158
160{
161 int status;
162 volume_upcall_args *args = &upcall->args.volume;
163
164 status = safe_write(&buffer, length, &args->len, sizeof(args->len));
165 if (status) goto out;
166 status = safe_write(&buffer, length, &args->info, args->len);
167out:
168 return status;
169}
170
171
176};
static int state
Definition: maze.c:121
int safe_write(unsigned char **pos, uint32_t *remaining, void *src, uint32_t src_len)
Definition: util.c:44
int safe_read(unsigned char **pos, uint32_t *remaining, void *dest, uint32_t dest_len)
Definition: util.c:33
int nfs_to_windows_error(int status, int default_error)
Definition: util.c:235
static int parse_volume(unsigned char *buffer, uint32_t length, nfs41_upcall *upcall)
Definition: volume.c:46
static int get_volume_size_info(IN nfs41_open_state *state, IN const char *query, OUT OPTIONAL PLONGLONG total_out, OUT OPTIONAL PLONGLONG user_out, OUT OPTIONAL PLONGLONG avail_out)
Definition: volume.c:59
static int marshall_volume(unsigned char *buffer, uint32_t *length, nfs41_upcall *upcall)
Definition: volume.c:159
static int handle_volume(nfs41_upcall *upcall)
Definition: volume.c:115
#define TO_UNITS(bytes)
Definition: volume.c:40
#define VOLUME_CACHE_EXPIRATION
Definition: volume.c:42
const nfs41_upcall_op nfs41_op_volume
Definition: volume.c:172
#define SECTORS_PER_UNIT
Definition: volume.c:36
#define BYTES_PER_SECTOR
Definition: volume.c:37
void eprintf(LPCSTR format,...)
Definition: daemon_debug.c:86
const char * nfs_error_string(int status)
Definition: daemon_debug.c:370
#define NO_ERROR
Definition: dderror.h:5
#define NULL
Definition: types.h:112
UINT32 uint32_t
Definition: types.h:75
#define ERROR_INVALID_PARAMETER
Definition: compat.h:101
VOID WINAPI ReleaseSRWLockShared(PSRWLOCK Lock)
Definition: sync.c:89
VOID WINAPI AcquireSRWLockExclusive(PSRWLOCK Lock)
Definition: sync.c:54
VOID WINAPI AcquireSRWLockShared(PSRWLOCK Lock)
Definition: sync.c:61
VOID WINAPI ReleaseSRWLockExclusive(PSRWLOCK Lock)
Definition: sync.c:82
@ FileFsAttributeInformation
Definition: from_kernel.h:223
@ FileFsSizeInformation
Definition: from_kernel.h:221
enum _FSINFOCLASS FS_INFORMATION_CLASS
GLuint buffer
Definition: glext.h:5915
GLuint GLsizei GLsizei * length
Definition: glext.h:6040
__u16 time
Definition: mkdosfs.c:8
void nfs41_superblock_fs_attributes(IN const nfs41_superblock *superblock, OUT struct _FILE_FS_ATTRIBUTE_INFORMATION *FsAttrs)
@ FATTR4_WORD1_SPACE_FREE
Definition: nfs41_const.h:255
@ FATTR4_WORD1_SPACE_AVAIL
Definition: nfs41_const.h:254
@ FATTR4_WORD1_SPACE_TOTAL
Definition: nfs41_const.h:256
nfs41_updowncall_list upcall
Definition: nfs41_driver.c:273
int nfs41_getattr(IN nfs41_session *session, IN OPTIONAL nfs41_path_fh *file, IN bitmap4 *attr_request, OUT nfs41_file_info *info)
Definition: nfs41_ops.c:1063
__GNU_EXTENSION typedef __int64 * PLONGLONG
Definition: ntbasedef.h:382
#define FileFsFullSizeInformation
Definition: ntifs_ex.h:389
#define dprintf
Definition: regdump.c:33
static FILE * out
Definition: regtests2xml.c:44
PULONG MinorVersion OPTIONAL
Definition: CrossNt.h:68
Definition: match.c:390
Definition: ps.c:97
#define IN
Definition: typedefs.h:39
#define OUT
Definition: typedefs.h:40
#define ERROR_BAD_NET_RESP
Definition: winerror.h:150
#define ERROR_NOT_FOUND
Definition: winerror.h:690