213 lines
7 KiB
C
213 lines
7 KiB
C
/* Copyright (c) 2010, 2011
|
|
* The Regents of the University of Michigan
|
|
* All Rights Reserved
|
|
*
|
|
* Olga Kornievskaia <aglo@umich.edu>
|
|
* Casey Bodley <cbodley@umich.edu>
|
|
*
|
|
* Permission is granted to use, copy and redistribute this software
|
|
* for noncommercial education and research purposes, so long as no
|
|
* fee is charged, and so long as the name of the University of Michigan
|
|
* is not used in any advertising or publicity pertaining to the use
|
|
* or distribution of this software without specific, written prior
|
|
* authorization. Permission to modify or otherwise create derivative
|
|
* works of this software is not granted.
|
|
*
|
|
* This software is provided as is, without representation or warranty
|
|
* of any kind either express or implied, including without limitation
|
|
* the implied warranties of merchantability, fitness for a particular
|
|
* purpose, or noninfringement. The Regents of the University of
|
|
* Michigan shall not be liable for any damages, including special,
|
|
* indirect, incidental, or consequential damages, with respect to any
|
|
* claim arising out of or in connection with the use of the software,
|
|
* even if it has been or is hereafter advised of the possibility of
|
|
* such damages.
|
|
*/
|
|
|
|
#include <Windows.h>
|
|
#include <stdio.h>
|
|
|
|
#include "upcall.h"
|
|
#include "daemon_debug.h"
|
|
#include "util.h"
|
|
|
|
extern const nfs41_upcall_op nfs41_op_mount;
|
|
extern const nfs41_upcall_op nfs41_op_unmount;
|
|
extern const nfs41_upcall_op nfs41_op_open;
|
|
extern const nfs41_upcall_op nfs41_op_close;
|
|
extern const nfs41_upcall_op nfs41_op_read;
|
|
extern const nfs41_upcall_op nfs41_op_write;
|
|
extern const nfs41_upcall_op nfs41_op_lock;
|
|
extern const nfs41_upcall_op nfs41_op_unlock;
|
|
extern const nfs41_upcall_op nfs41_op_readdir;
|
|
extern const nfs41_upcall_op nfs41_op_getattr;
|
|
extern const nfs41_upcall_op nfs41_op_setattr;
|
|
extern const nfs41_upcall_op nfs41_op_getexattr;
|
|
extern const nfs41_upcall_op nfs41_op_setexattr;
|
|
extern const nfs41_upcall_op nfs41_op_symlink;
|
|
extern const nfs41_upcall_op nfs41_op_volume;
|
|
extern const nfs41_upcall_op nfs41_op_getacl;
|
|
extern const nfs41_upcall_op nfs41_op_setacl;
|
|
|
|
static const nfs41_upcall_op *g_upcall_op_table[] = {
|
|
&nfs41_op_mount,
|
|
&nfs41_op_unmount,
|
|
&nfs41_op_open,
|
|
&nfs41_op_close,
|
|
&nfs41_op_read,
|
|
&nfs41_op_write,
|
|
&nfs41_op_lock,
|
|
&nfs41_op_unlock,
|
|
&nfs41_op_readdir,
|
|
&nfs41_op_getattr,
|
|
&nfs41_op_setattr,
|
|
&nfs41_op_getexattr,
|
|
&nfs41_op_setexattr,
|
|
&nfs41_op_symlink,
|
|
&nfs41_op_volume,
|
|
&nfs41_op_getacl,
|
|
&nfs41_op_setacl,
|
|
NULL,
|
|
NULL
|
|
};
|
|
static const uint32_t g_upcall_op_table_size = ARRAYSIZE(g_upcall_op_table);
|
|
|
|
|
|
int upcall_parse(
|
|
IN unsigned char *buffer,
|
|
IN uint32_t length,
|
|
OUT nfs41_upcall *upcall)
|
|
{
|
|
int status;
|
|
const nfs41_upcall_op *op;
|
|
DWORD version;
|
|
|
|
ZeroMemory(upcall, sizeof(nfs41_upcall));
|
|
if (!length) {
|
|
eprintf("empty upcall\n");
|
|
upcall->status = status = 102;
|
|
goto out;
|
|
}
|
|
|
|
dprintf(2, "received %d bytes upcall data: processing upcall\n", length);
|
|
print_hexbuf(4, (unsigned char *)"upcall buffer: ", buffer, length);
|
|
|
|
/* parse common elements */
|
|
status = safe_read(&buffer, &length, &version, sizeof(uint32_t));
|
|
if (status) goto out;
|
|
status = safe_read(&buffer, &length, &upcall->xid, sizeof(uint64_t));
|
|
if (status) goto out;
|
|
status = safe_read(&buffer, &length, &upcall->opcode, sizeof(uint32_t));
|
|
if (status) goto out;
|
|
status = safe_read(&buffer, &length, &upcall->root_ref, sizeof(HANDLE));
|
|
if (status) goto out;
|
|
status = safe_read(&buffer, &length, &upcall->state_ref, sizeof(HANDLE));
|
|
if (status) goto out;
|
|
|
|
dprintf(2, "version=%d xid=%d opcode=%s session=0x%x open_state=0x%x\n",
|
|
version, upcall->xid, opcode2string(upcall->opcode), upcall->root_ref,
|
|
upcall->state_ref);
|
|
if (version != NFS41D_VERSION) {
|
|
eprintf("received version %d expecting version %d\n", version, NFS41D_VERSION);
|
|
upcall->status = status = NFSD_VERSION_MISMATCH;
|
|
goto out;
|
|
}
|
|
if (upcall->opcode >= g_upcall_op_table_size) {
|
|
status = ERROR_NOT_SUPPORTED;
|
|
eprintf("unrecognized upcall opcode %d!\n", upcall->opcode);
|
|
goto out;
|
|
}
|
|
if (upcall->root_ref != INVALID_HANDLE_VALUE)
|
|
nfs41_root_ref(upcall->root_ref);
|
|
if (upcall->state_ref != INVALID_HANDLE_VALUE)
|
|
nfs41_open_state_ref(upcall->state_ref);
|
|
|
|
/* parse the operation's arguments */
|
|
op = g_upcall_op_table[upcall->opcode];
|
|
if (op && op->parse) {
|
|
status = op->parse(buffer, length, upcall);
|
|
if (status) {
|
|
eprintf("parsing of upcall '%s' failed with %d.\n",
|
|
opcode2string(upcall->opcode), status);
|
|
goto out;
|
|
}
|
|
}
|
|
out:
|
|
return status;
|
|
}
|
|
|
|
int upcall_handle(
|
|
IN nfs41_upcall *upcall)
|
|
{
|
|
int status = NO_ERROR;
|
|
const nfs41_upcall_op *op;
|
|
|
|
op = g_upcall_op_table[upcall->opcode];
|
|
if (op == NULL || op->handle == NULL) {
|
|
status = ERROR_NOT_SUPPORTED;
|
|
eprintf("upcall '%s' missing handle function!\n",
|
|
opcode2string(upcall->opcode));
|
|
goto out;
|
|
}
|
|
|
|
upcall->status = op->handle(upcall);
|
|
out:
|
|
return status;
|
|
}
|
|
#pragma warning (disable : 4706) /* assignment within conditional expression */
|
|
void upcall_marshall(
|
|
IN nfs41_upcall *upcall,
|
|
OUT unsigned char *buffer,
|
|
IN uint32_t length,
|
|
OUT uint32_t *length_out)
|
|
{
|
|
const nfs41_upcall_op *op;
|
|
unsigned char *orig_buf = buffer;
|
|
const uint32_t total = length, orig_len = length;
|
|
|
|
/* marshall common elements */
|
|
write_downcall:
|
|
length = orig_len;
|
|
buffer = orig_buf;
|
|
safe_write(&buffer, &length, &upcall->xid, sizeof(upcall->xid));
|
|
safe_write(&buffer, &length, &upcall->opcode, sizeof(upcall->opcode));
|
|
safe_write(&buffer, &length, &upcall->status, sizeof(upcall->status));
|
|
safe_write(&buffer, &length, &upcall->last_error, sizeof(upcall->last_error));
|
|
|
|
if (upcall->status)
|
|
goto out;
|
|
|
|
/* marshall the operation's results */
|
|
op = g_upcall_op_table[upcall->opcode];
|
|
if (op && op->marshall) {
|
|
if ((upcall->status = op->marshall(buffer, &length, upcall)))
|
|
goto write_downcall;
|
|
}
|
|
out:
|
|
*length_out = total - length;
|
|
}
|
|
|
|
void upcall_cancel(
|
|
IN nfs41_upcall *upcall)
|
|
{
|
|
const nfs41_upcall_op *op = g_upcall_op_table[upcall->opcode];
|
|
if (op && op->cancel)
|
|
op->cancel(upcall);
|
|
}
|
|
|
|
void upcall_cleanup(
|
|
IN nfs41_upcall *upcall)
|
|
{
|
|
const nfs41_upcall_op *op = g_upcall_op_table[upcall->opcode];
|
|
if (op && op->cleanup && upcall->status != NFSD_VERSION_MISMATCH)
|
|
op->cleanup(upcall);
|
|
|
|
if (upcall->state_ref && upcall->state_ref != INVALID_HANDLE_VALUE) {
|
|
nfs41_open_state_deref(upcall->state_ref);
|
|
upcall->state_ref = NULL;
|
|
}
|
|
if (upcall->root_ref && upcall->root_ref != INVALID_HANDLE_VALUE) {
|
|
nfs41_root_deref(upcall->root_ref);
|
|
upcall->root_ref = NULL;
|
|
}
|
|
}
|