ReactOS 0.4.15-dev-7131-ge4d03f4
upcall.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 <stdio.h>
24#include <time.h>
25
26#include "upcall.h"
27#include "daemon_debug.h"
28#include "util.h"
29
47
66 NULL,
67 NULL
68};
69#ifdef __REACTOS__
70static const uint32_t g_upcall_op_table_size = (sizeof(g_upcall_op_table) / sizeof(g_upcall_op_table[0]));
71#else
73#endif
74
76 IN unsigned char *buffer,
79{
80 int status;
81 const nfs41_upcall_op *op;
83
85 if (!length) {
86 eprintf("empty upcall\n");
87 upcall->status = status = 102;
88 goto out;
89 }
90
91 dprintf(2, "received %d bytes upcall data: processing upcall\n", length);
92 print_hexbuf(4, (unsigned char *)"upcall buffer: ", buffer, length);
93
94 /* parse common elements */
96 if (status) goto out;
97 status = safe_read(&buffer, &length, &upcall->xid, sizeof(uint64_t));
98 if (status) goto out;
99 status = safe_read(&buffer, &length, &upcall->opcode, sizeof(uint32_t));
100 if (status) goto out;
101 status = safe_read(&buffer, &length, &upcall->root_ref, sizeof(HANDLE));
102 if (status) goto out;
103 status = safe_read(&buffer, &length, &upcall->state_ref, sizeof(HANDLE));
104 if (status) goto out;
105
106 dprintf(2, "time=%ld version=%d xid=%d opcode=%s session=0x%x open_state=0x%x\n",
107 time(NULL), version, upcall->xid, opcode2string(upcall->opcode), upcall->root_ref,
108 upcall->state_ref);
109 if (version != NFS41D_VERSION) {
110 eprintf("received version %d expecting version %d\n", version, NFS41D_VERSION);
112 goto out;
113 }
114 if (upcall->opcode >= g_upcall_op_table_size) {
116 eprintf("unrecognized upcall opcode %d!\n", upcall->opcode);
117 goto out;
118 }
119 if (upcall->root_ref != INVALID_HANDLE_VALUE)
120 nfs41_root_ref(upcall->root_ref);
121 if (upcall->state_ref != INVALID_HANDLE_VALUE)
122 nfs41_open_state_ref(upcall->state_ref);
123
124 /* parse the operation's arguments */
125 op = g_upcall_op_table[upcall->opcode];
126 if (op && op->parse) {
127 status = op->parse(buffer, length, upcall);
128 if (status) {
129 eprintf("parsing of upcall '%s' failed with %d.\n",
130 opcode2string(upcall->opcode), status);
131 goto out;
132 }
133 }
134out:
135 return status;
136}
137
140{
141 int status = NO_ERROR;
142 const nfs41_upcall_op *op;
143
144 op = g_upcall_op_table[upcall->opcode];
145 if (op == NULL || op->handle == NULL) {
147 eprintf("upcall '%s' missing handle function!\n",
148 opcode2string(upcall->opcode));
149 goto out;
150 }
151
152 upcall->status = op->handle(upcall);
153out:
154 return status;
155}
156#pragma warning (disable : 4706) /* assignment within conditional expression */
159 OUT unsigned char *buffer,
161 OUT uint32_t *length_out)
162{
163 const nfs41_upcall_op *op;
164 unsigned char *orig_buf = buffer;
165 const uint32_t total = length, orig_len = length;
166
167 /* marshall common elements */
168write_downcall:
169 length = orig_len;
170 buffer = orig_buf;
171 safe_write(&buffer, &length, &upcall->xid, sizeof(upcall->xid));
172 safe_write(&buffer, &length, &upcall->opcode, sizeof(upcall->opcode));
173 safe_write(&buffer, &length, &upcall->status, sizeof(upcall->status));
174 safe_write(&buffer, &length, &upcall->last_error, sizeof(upcall->last_error));
175
176 if (upcall->status)
177 goto out;
178
179 /* marshall the operation's results */
180 op = g_upcall_op_table[upcall->opcode];
181 if (op && op->marshall) {
182 if ((upcall->status = op->marshall(buffer, &length, upcall)))
183 goto write_downcall;
184 }
185out:
186 *length_out = total - length;
187}
188
191{
192 const nfs41_upcall_op *op = g_upcall_op_table[upcall->opcode];
193 if (op && op->cancel)
194 op->cancel(upcall);
195}
196
199{
200 const nfs41_upcall_op *op = g_upcall_op_table[upcall->opcode];
201 if (op && op->cleanup && upcall->status != NFSD_VERSION_MISMATCH)
202 op->cleanup(upcall);
203
204 if (upcall->state_ref && upcall->state_ref != INVALID_HANDLE_VALUE) {
205 nfs41_open_state_deref(upcall->state_ref);
206 upcall->state_ref = NULL;
207 }
208 if (upcall->root_ref && upcall->root_ref != INVALID_HANDLE_VALUE) {
209 nfs41_root_deref(upcall->root_ref);
210 upcall->root_ref = NULL;
211 }
212}
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
void eprintf(LPCSTR format,...)
Definition: daemon_debug.c:86
const char * opcode2string(DWORD opcode)
Definition: daemon_debug.c:280
void print_hexbuf(int level, unsigned char *title, unsigned char *buf, int len)
Definition: daemon_debug.c:98
#define NO_ERROR
Definition: dderror.h:5
#define NULL
Definition: types.h:112
UINT32 uint32_t
Definition: types.h:75
UINT64 uint64_t
Definition: types.h:77
UINT op
Definition: effect.c:236
#define ARRAYSIZE(array)
Definition: filtermapper.c:47
#define INVALID_HANDLE_VALUE
Definition: compat.h:731
#define ERROR_NOT_SUPPORTED
Definition: compat.h:100
static const WCHAR version[]
Definition: asmname.c:66
unsigned long DWORD
Definition: ntddk_ex.h:95
size_t total
GLuint buffer
Definition: glext.h:5915
GLuint GLsizei GLsizei * length
Definition: glext.h:6040
__u16 time
Definition: mkdosfs.c:8
void nfs41_root_ref(IN nfs41_root *root)
Definition: namespace.c:92
void nfs41_root_deref(IN nfs41_root *root)
Definition: namespace.c:100
void nfs41_open_state_deref(IN nfs41_open_state *state)
Definition: open.c:104
void nfs41_open_state_ref(IN nfs41_open_state *state)
Definition: open.c:96
DWORD NFS41D_VERSION
Definition: nfs41_daemon.c:42
nfs41_updowncall_list upcall
Definition: nfs41_driver.c:273
#define dprintf
Definition: regdump.c:33
static FILE * out
Definition: regtests2xml.c:44
Definition: ps.c:97
#define IN
Definition: typedefs.h:39
#define OUT
Definition: typedefs.h:40
const nfs41_upcall_op nfs41_op_close
Definition: open.c:942
const nfs41_upcall_op nfs41_op_readdir
Definition: readdir.c:649
void upcall_marshall(IN nfs41_upcall *upcall, OUT unsigned char *buffer, IN uint32_t length, OUT uint32_t *length_out)
Definition: upcall.c:157
const nfs41_upcall_op nfs41_op_open
Definition: open.c:936
int upcall_parse(IN unsigned char *buffer, IN uint32_t length, OUT nfs41_upcall *upcall)
Definition: upcall.c:75
const nfs41_upcall_op nfs41_op_setacl
Definition: acl.c:797
void upcall_cleanup(IN nfs41_upcall *upcall)
Definition: upcall.c:197
const nfs41_upcall_op nfs41_op_getexattr
Definition: ea.c:689
static const nfs41_upcall_op * g_upcall_op_table[]
Definition: upcall.c:48
const nfs41_upcall_op nfs41_op_mount
Definition: mount.c:151
const nfs41_upcall_op nfs41_op_setattr
Definition: setattr.c:522
const nfs41_upcall_op nfs41_op_symlink
Definition: symlink.c:295
const nfs41_upcall_op nfs41_op_unlock
Definition: lock.c:366
const nfs41_upcall_op nfs41_op_setexattr
Definition: ea.c:683
const nfs41_upcall_op nfs41_op_volume
Definition: volume.c:172
const nfs41_upcall_op nfs41_op_lock
Definition: lock.c:360
int upcall_handle(IN nfs41_upcall *upcall)
Definition: upcall.c:138
static const uint32_t g_upcall_op_table_size
Definition: upcall.c:72
const nfs41_upcall_op nfs41_op_getattr
Definition: getattr.c:180
const nfs41_upcall_op nfs41_op_write
Definition: readwrite.c:321
const nfs41_upcall_op nfs41_op_read
Definition: readwrite.c:316
const nfs41_upcall_op nfs41_op_unmount
Definition: mount.c:173
const nfs41_upcall_op nfs41_op_getacl
Definition: acl.c:420
void upcall_cancel(IN nfs41_upcall *upcall)
Definition: upcall.c:189
#define NFSD_VERSION_MISMATCH
Definition: upcall.h:28
#define ZeroMemory
Definition: winbase.h:1712