ReactOS  0.4.11-dev-946-g431643b
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 
30 extern const nfs41_upcall_op nfs41_op_mount;
32 extern const nfs41_upcall_op nfs41_op_open;
33 extern const nfs41_upcall_op nfs41_op_close;
34 extern const nfs41_upcall_op nfs41_op_read;
35 extern const nfs41_upcall_op nfs41_op_write;
36 extern const nfs41_upcall_op nfs41_op_lock;
37 extern const nfs41_upcall_op nfs41_op_unlock;
44 extern const nfs41_upcall_op nfs41_op_volume;
45 extern const nfs41_upcall_op nfs41_op_getacl;
46 extern const nfs41_upcall_op nfs41_op_setacl;
47 
66  NULL,
67  NULL
68 };
69 #ifdef __REACTOS__
70 static const uint32_t g_upcall_op_table_size = (sizeof(g_upcall_op_table) / sizeof(g_upcall_op_table[0]));
71 #else
72 static const uint32_t g_upcall_op_table_size = ARRAYSIZE(g_upcall_op_table);
73 #endif
74 
76  IN unsigned char *buffer,
79 {
80  int status;
81  const nfs41_upcall_op *op;
82  DWORD version;
83 
84  ZeroMemory(upcall, sizeof(nfs41_upcall));
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 */
95  status = safe_read(&buffer, &length, &version, sizeof(uint32_t));
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);
111  upcall->status = status = NFSD_VERSION_MISMATCH;
112  goto out;
113  }
114  if (upcall->opcode >= g_upcall_op_table_size) {
115  status = ERROR_NOT_SUPPORTED;
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  }
134 out:
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) {
146  status = ERROR_NOT_SUPPORTED;
147  eprintf("upcall '%s' missing handle function!\n",
148  opcode2string(upcall->opcode));
149  goto out;
150  }
151 
152  upcall->status = op->handle(upcall);
153 out:
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 */
168 write_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  }
185 out:
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 }
const nfs41_upcall_op nfs41_op_lock
Definition: lock.c:360
void upcall_cancel(IN nfs41_upcall *upcall)
Definition: upcall.c:189
void nfs41_open_state_deref(IN nfs41_open_state *state)
Definition: open.c:104
#define IN
Definition: typedefs.h:38
void nfs41_open_state_ref(IN nfs41_open_state *state)
Definition: open.c:96
const nfs41_upcall_op nfs41_op_getattr
Definition: getattr.c:180
const nfs41_upcall_op nfs41_op_volume
Definition: volume.c:172
int upcall_parse(IN unsigned char *buffer, IN uint32_t length, OUT nfs41_upcall *upcall)
Definition: upcall.c:75
upcall_cancel_proc cancel
Definition: upcall.h:222
int upcall_handle(IN nfs41_upcall *upcall)
Definition: upcall.c:138
#define ARRAYSIZE(array)
Definition: filtermapper.c:47
#define INVALID_HANDLE_VALUE
Definition: compat.h:391
#define ZeroMemory
Definition: winbase.h:1635
void eprintf(LPCSTR format,...)
Definition: daemon_debug.c:86
GLuint buffer
Definition: glext.h:5915
__u16 time
Definition: mkdosfs.c:366
const nfs41_upcall_op nfs41_op_getexattr
Definition: ea.c:689
#define NO_ERROR
Definition: dderror.h:5
const nfs41_upcall_op nfs41_op_open
Definition: open.c:936
void upcall_cleanup(IN nfs41_upcall *upcall)
Definition: upcall.c:197
const nfs41_upcall_op nfs41_op_getacl
Definition: acl.c:420
UINT op
Definition: effect.c:223
#define dprintf
Definition: regdump.c:33
upcall_marshall_proc marshall
Definition: upcall.h:221
#define NFSD_VERSION_MISMATCH
Definition: upcall.h:28
DWORD NFS41D_VERSION
Definition: nfs41_daemon.c:42
smooth NULL
Definition: ftsmooth.c:416
static const WCHAR version[]
Definition: asmname.c:64
const nfs41_upcall_op nfs41_op_setexattr
Definition: ea.c:683
void nfs41_root_ref(IN nfs41_root *root)
Definition: namespace.c:92
const nfs41_upcall_op nfs41_op_unmount
Definition: mount.c:173
const nfs41_upcall_op nfs41_op_close
Definition: open.c:942
const nfs41_upcall_op nfs41_op_readdir
Definition: readdir.c:645
static const uint32_t g_upcall_op_table_size
Definition: upcall.c:72
GLenum GLuint GLenum GLsizei length
Definition: glext.h:5579
static FILE * out
Definition: regtests2xml.c:44
upcall_handle_proc handle
Definition: upcall.h:220
unsigned long DWORD
Definition: ntddk_ex.h:95
int safe_write(unsigned char **pos, uint32_t *remaining, void *src, uint32_t src_len)
Definition: util.c:44
const nfs41_upcall_op nfs41_op_mount
Definition: mount.c:151
static const nfs41_upcall_op * g_upcall_op_table[]
Definition: upcall.c:48
const nfs41_upcall_op nfs41_op_symlink
Definition: symlink.c:295
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_read
Definition: readwrite.c:316
UINT64 uint64_t
Definition: types.h:77
const nfs41_upcall_op nfs41_op_setattr
Definition: setattr.c:522
const nfs41_upcall_op nfs41_op_unlock
Definition: lock.c:366
UINT32 uint32_t
Definition: types.h:75
const char * opcode2string(DWORD opcode)
Definition: daemon_debug.c:280
const nfs41_upcall_op nfs41_op_setacl
Definition: acl.c:797
nfs41_updowncall_list upcall
Definition: nfs41_driver.c:273
#define ERROR_NOT_SUPPORTED
Definition: compat.h:90
#define OUT
Definition: typedefs.h:39
int safe_read(unsigned char **pos, uint32_t *remaining, void *dest, uint32_t dest_len)
Definition: util.c:33
void nfs41_root_deref(IN nfs41_root *root)
Definition: namespace.c:100
upcall_cleanup_proc cleanup
Definition: upcall.h:223
const nfs41_upcall_op nfs41_op_write
Definition: readwrite.c:321
void print_hexbuf(int level, unsigned char *title, unsigned char *buf, int len)
Definition: daemon_debug.c:98
static SERVICE_STATUS status
Definition: service.c:31
upcall_parse_proc parse
Definition: upcall.h:219
Definition: ps.c:97