Leaked source code of windows server 2003
You can not select more than 25 topics Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
 
 
 
 
 
 

649 lines
19 KiB

/*++
Copyright (c) 2000 Microsoft Corporation
Module Name:
replay.c
Abstract:
Implements replay of records during replica recovery
Author:
Ahmed Mohamed (ahmedm) 1-Feb-2000
Revision History:
--*/
#include <nt.h>
#include <ntdef.h>
#include <ntrtl.h>
#include <nturtl.h>
#include <windows.h>
#include <stdio.h>
#include <ntddvol.h>
#include <string.h>
#include <assert.h>
#include "fs.h"
#include "fsp.h"
#include "fsutil.h"
#include <strsafe.h>
NTSTATUS
fs_replay_create(VolInfo_t *volinfo, fs_log_rec_t *lrec, int nid, int mid)
{
NTSTATUS err;
fs_create_msg_t msg;
fs_create_reply_t reply;
WCHAR name[MAXPATH];
int name_sz = sizeof(name);
HANDLE vfd = FS_GET_VOL_HANDLE(volinfo, mid);
fs_log_rec_t myRec;
name[0] = '\0';
memcpy(&msg.xid, lrec->id, sizeof(msg.xid));
msg.flags = lrec->flags;
msg.attr = lrec->attrib;
// note: use id instead of fs_id since we don't have fs_id till
// a prepare has committed.
FsLogReplay(("fs_replay_create: try %I64x:%I64x\n", lrec->id[0],
lrec->id[1]));
err = xFsGetPathById(vfd, &lrec->id, name, &name_sz);
if (err == STATUS_SUCCESS) {
IO_STATUS_BLOCK ios;
msg.name = xFsBuildRelativePath(volinfo, mid, name);
msg.name_len = (USHORT) wcslen(msg.name);
msg.fnum = INVALID_FHANDLE_T;
ios.Information = sizeof(reply);
err = FspCreate(volinfo, NULL, nid, (PVOID) &msg, sizeof(msg),
(PVOID) &reply, &ios.Information, (PVOID)&myRec);
}
FsLogReplay(("fs_replay_create: %S err %x\n", name, err));
return err;
}
NTSTATUS
fs_replay_setattr(VolInfo_t *volinfo, fs_log_rec_t *lrec, int nid, int mid)
{
NTSTATUS err;
fs_setattr_msg_t msg;
WCHAR name[MAXPATH];
int name_sz = sizeof(name);
HANDLE vfd = FS_GET_VOL_HANDLE(volinfo, nid);
fs_log_rec_t myRec;
// find path for fs_id
FsLogReplay(("fs_replay_setattr: try %I64x:%I64x\n", lrec->fs_id[0],
lrec->fs_id[1]));
err = xFsGetPathById(vfd, &lrec->fs_id, name, &name_sz);
if (err == STATUS_SUCCESS) {
IO_STATUS_BLOCK ios;
ios.Information = 0;
// todo: we need to read current attr from master and apply it into nid disk.
// FileAttributes are not enough, we could have time changes which need to be
// in sync in all disks.
memcpy(&msg.xid, lrec->id, sizeof(msg.xid));
msg.fs_id = &lrec->fs_id;
msg.name = xFsBuildRelativePath(volinfo, nid, name);
msg.name_len = (USHORT) wcslen(msg.name);
memset(&msg.attr, 0, sizeof(msg.attr));
msg.attr.FileAttributes = lrec->attrib;
err = FspSetAttr2(volinfo, NULL, nid, (PVOID) &msg, sizeof(msg),
NULL, &ios.Information, (PVOID)&myRec);
}
FsLogReplay(("replay_setattr: %I64x err %x\n",
lrec->fs_id[0], err));
return err;
}
NTSTATUS
fs_replay_mkdir(VolInfo_t *volinfo, fs_log_rec_t *lrec, int nid, int mid)
{
NTSTATUS err;
fs_create_msg_t msg;
WCHAR name[MAXPATH];
int name_sz = sizeof(name);
HANDLE vfd = FS_GET_VOL_HANDLE(volinfo, mid);
fs_log_rec_t myRec;
name[0] = '\0';
// note: use id instead of fs_id since we don't have fs_id till
// a prepare has committed.
FsLogReplay(("fs_replay_mkdir: %I64x:%I64x\n", lrec->id[0],
lrec->id[1]));
err = xFsGetPathById(vfd, &lrec->id, name, &name_sz);
if (err == STATUS_SUCCESS) {
IO_STATUS_BLOCK ios;
ios.Information = 0;
memcpy(&msg.xid, lrec->id, sizeof(msg.xid));
msg.name = xFsBuildRelativePath(volinfo, mid, name);
msg.name_len = (USHORT) wcslen(msg.name);
msg.flags = lrec->flags;
msg.attr = lrec->attrib;
err = FspMkDir(volinfo, NULL, nid, (PVOID) &msg, sizeof(msg),
NULL, &ios.Information, (PVOID)&myRec);
}
FsLogReplay(("Replay Mkdir %S err %x\n", name, err));
return err;
}
NTSTATUS
fs_replay_remove(VolInfo_t *volinfo, fs_log_rec_t *lrec, int nid, int mid)
{
NTSTATUS err;
fs_remove_msg_t msg;
// we find the objectid in the old replica, since file is already delete in master
HANDLE ovfd = FS_GET_VOL_HANDLE(volinfo, nid);
WCHAR name[MAXPATH];
int name_sz = sizeof(name);
fs_log_rec_t myRec;
name[0] = '\0';
FsLogReplay(("fs_relay_remove: %I64x:%I64x\n", lrec->fs_id[0],
lrec->fs_id[1]));
err = xFsGetPathById(ovfd, &lrec->fs_id, name, &name_sz);
if (err == STATUS_SUCCESS) {
IO_STATUS_BLOCK ios;
ios.Information = 0;
memcpy(&msg.xid, lrec->id, sizeof(msg.xid));
msg.fs_id = &lrec->fs_id;
msg.name = xFsBuildRelativePath(volinfo, nid, name);
msg.name_len = (USHORT) wcslen(msg.name);
err = FspRemove(volinfo, NULL, nid, (PVOID) &msg, sizeof(msg),
NULL, &ios.Information, (PVOID)&myRec);
}
FsLogReplay(("Replay remove %S err %x\n", name, err));
return err;
}
NTSTATUS
fs_replay_rename(VolInfo_t *volinfo, fs_log_rec_t *lrec, int nid, int mid)
{
NTSTATUS err;
fs_rename_msg_t msg;
HANDLE vfd = FS_GET_VOL_HANDLE(volinfo,mid);
HANDLE ovfd = FS_GET_VOL_HANDLE(volinfo, nid);
WCHAR old_name[MAXPATH];
WCHAR new_name[MAXPATH];
int old_name_sz = sizeof(old_name);
int new_name_sz = sizeof(new_name);
fs_log_rec_t myRec;
new_name[0] = old_name[0] = '\0';
FsLogReplay(("fs_relay_rename: %I64x:%I64x\n", lrec->fs_id[0],
lrec->fs_id[1]));
// get old name
err = xFsGetPathById(ovfd, &lrec->fs_id, old_name, &old_name_sz);
if (err == STATUS_SUCCESS) {
IO_STATUS_BLOCK ios;
ios.Information = 0;
// get the new name
err = xFsGetPathById(vfd, &lrec->fs_id, new_name, &new_name_sz);
if (err == STATUS_OBJECT_PATH_NOT_FOUND) {
NTSTATUS e;
// if we can't find file in the master disk, we must
// rename the file, pick a name based on file id
StringCchPrintfW(new_name, MAXPATH, L"%s%I64x%I64x", old_name,
lrec->fs_id[0],lrec->fs_id[1]);
new_name_sz = wcslen(new_name);
err = STATUS_SUCCESS;
mid = nid;
}
if (err == STATUS_SUCCESS) {
memcpy(&msg.xid, lrec->id, sizeof(msg.xid));
msg.fs_id = &lrec->fs_id;
msg.sname = xFsBuildRelativePath(volinfo, nid, old_name);
msg.sname_len = (USHORT) wcslen(msg.sname);
msg.dname = xFsBuildRelativePath(volinfo, mid, new_name);
msg.dname_len = (USHORT) wcslen(msg.dname);
err = FspRename(volinfo, NULL, nid, (PVOID) &msg, sizeof(msg),
NULL, &ios.Information, (PVOID)&myRec);
}
}
FsLogReplay(("Replay rename %S -> %S err %x\n", old_name, new_name, err));
return err;
}
NTSTATUS
fs_replay_write(VolInfo_t *volinfo, fs_log_rec_t *lrec, int nid, int mid)
{
NTSTATUS err;
IO_STATUS_BLOCK ios;
HANDLE shdl = INVALID_HANDLE_VALUE;
HANDLE dhdl = INVALID_HANDLE_VALUE;
char *buf = NULL;
fs_io_msg_t msg;
HANDLE ovfd = FS_GET_VOL_HANDLE(volinfo, nid);
HANDLE vfd = FS_GET_VOL_HANDLE(volinfo, mid);
fs_log_rec_t myRec;
FsLogReplay(("fs_replay_write: %I64x:%I64x\n", lrec->fs_id[0],
lrec->fs_id[1]));
// get the new file first
err = xFsGetHandleById(vfd, &lrec->fs_id, FILE_READ_EA|FILE_GENERIC_READ, &shdl);
if (err == STATUS_SUCCESS) {
LARGE_INTEGER off;
IO_STATUS_BLOCK ios2;
ios2.Information = 0;
// get old file
err = xFsGetHandleById(ovfd, &lrec->fs_id, FILE_READ_EA|FILE_GENERIC_WRITE, &dhdl);
if (err != STATUS_SUCCESS) {
// this is a very bad error, must abort now
FsLogReplay(("Aborting replay_write err %x\n", err));
err = STATUS_TRANSACTION_ABORTED;
goto done;
}
// we need to read the new data from the sfd first
if (lrec->length > 0) {
// allocate buf
buf = VirtualAlloc(NULL, lrec->length, MEM_COMMIT, PAGE_READWRITE);
if (buf == NULL) {
FsLogError(("Unable to allocate write buffer to replay\n"));
err = STATUS_TRANSACTION_ABORTED;
goto done;
}
off.LowPart = lrec->offset;
off.HighPart = 0;
// read local data. xxx: what if the file is locked?
err = NtReadFile(shdl, NULL, NULL, NULL, &ios, buf,
lrec->length, &off, NULL);
if (err == STATUS_PENDING) {
EventWait(shdl);
err = ios.Status;
}
if (err != STATUS_SUCCESS) {
FsLogReplay(("Read failed for replay 0x%x\n", err));
err = STATUS_TRANSACTION_ABORTED;
goto done;
}
} else {
buf = NULL;
ios.Information = 0;
}
memcpy(&msg.xid, lrec->id, sizeof(msg.xid));
msg.fs_id = &lrec->fs_id;
msg.offset = lrec->offset;
msg.size = (UINT32)ios.Information;
msg.buf = buf;
msg.context = (PVOID) dhdl;
msg.fnum = INVALID_FHANDLE_T;
err = FspWrite(volinfo, NULL, nid, (PVOID) &msg, sizeof(msg), NULL, &ios2.Information, (PVOID)&myRec);
// check if we have the same size, otherwise abort
if ((ULONG)ios2.Information != lrec->length) {
FsLogError(("Write sz mismatch, %d expected %d\n", (ULONG)ios2.Information, lrec->length));
err = STATUS_TRANSACTION_ABORTED;
}
} else if (err != STATUS_OBJECT_PATH_NOT_FOUND) {
err = STATUS_TRANSACTION_ABORTED;
}
done:
if (buf != NULL) {
VirtualFree(buf, 0, MEM_RELEASE);
}
if (shdl != INVALID_HANDLE_VALUE)
xFsClose(shdl);
if (dhdl != INVALID_HANDLE_VALUE)
xFsClose(dhdl);
FsLogReplay(("Replay write offset %d len %d err %x\n",
lrec->offset, lrec->length, err));
return err;
}
FsReplayHandler_t FsReplayCallTable[] = {
fs_replay_create,
fs_replay_setattr,
fs_replay_write,
fs_replay_mkdir,
fs_replay_remove,
fs_replay_rename
};
NTSTATUS
FsReplayFid(VolInfo_t *volinfo, UserInfo_t *uinfo, int nid, int mid)
{
int i;
// WCHAR path[MAXPATH];
// WCHAR *name;
int name_len;
NTSTATUS err = STATUS_SUCCESS;
// Open on replica nid all currently open files.
for (i = 0; i < FsTableSize; i++) {
HANDLE fd;
UINT32 disp, share, access, flags;
if (uinfo->Table[i].Flags == 0) {
continue;
}
if (uinfo->Table[i].Fd[nid] != INVALID_HANDLE_VALUE) {
continue;
}
// Perform replays on completely open handles only. partially opened handles
// should be taken care of by the send*() functions.
//
if (uinfo->Table[i].hState != HandleStateOpened) {
continue;
}
#if 0
// todo: this should be in a for loop
fd = uinfo->Table[i].Fd[mid];
if (fd == INVALID_HANDLE_VALUE)
continue;
// get path name
name_len = sizeof(path);
err = xFsGetHandlePath(fd, path, &name_len);
if (err != STATUS_SUCCESS) {
FsLogReplay(("FsReplayFid %d failed on handlpath %x\n",
mid, err));
// todo: the master might have failed, we should just
// try to go to a differnet replica if possible
return err;
}
// issue open against nid, but first get filename from master
name = xFsBuildRelativePath(volinfo, mid, path);
#endif
DecodeCreateParam(uinfo->Table[i].Flags, &flags, &disp, &share, &access);
err = xFsOpen(&fd, FS_GET_VOL_HANDLE(volinfo, nid),
uinfo->Table[i].FileName, wcslen(uinfo->Table[i].FileName),
access, share, 0);
if (err != STATUS_SUCCESS) {
FsLogReplay(("FsReplayFid mid %d nid %d open file '%S' failed %x\n",
mid, nid, uinfo->Table[i].FileName, err));
// Cleanup all open handles we have before returning an
// error. We cleanup this node later, so that's ok.
return err;
}
FsLogReplay(("FsReplayFid mid %d nid %d file '%S' flags %x\n",
mid, nid, uinfo->Table[i].FileName, uinfo->Table[i].Flags));
// we now add the open handle to the nid slot
FS_SET_USER_HANDLE(uinfo, nid, i, fd);
// todo: issue locks
}
return err;
}
NTSTATUS
FsReplayXid(VolInfo_t *volinfo, int nid, PVOID arg, int action, int mid)
{
fs_log_rec_t *p = (fs_log_rec_t *) arg;
NTSTATUS err = ERROR_SUCCESS;
fs_id_t *fs_id;
HANDLE vhdl;
vhdl = FS_GET_VOL_HANDLE(volinfo, nid);
if (vhdl == INVALID_HANDLE_VALUE) {
FsLogUndo(("FsUndoXid Failed to get crs handle %d\n",
nid));
return STATUS_TRANSACTION_ABORTED;
}
vhdl = FS_GET_VOL_HANDLE(volinfo, mid);
if (vhdl == INVALID_HANDLE_VALUE) {
FsLogReplay(("FsReplayXid Failed to get crs handle %d\n",
mid));
return STATUS_TRANSACTION_ABORTED;
}
// note: use id instead of fs_id since we don't have fs_id till
// a prepare has committed.
fs_id = &p->id;
FsLogReplay(("Replay cmd %d mid %d nid %d objid %I64x:%I64x\n", p->command,
mid, nid,
(*fs_id)[0], (*fs_id)[1]));
err = FsReplayCallTable[p->command](volinfo, p, nid, mid);
FsLogReplay(("Replay Status %x\n", err));
return err;
}
NTSTATUS
FsQueryXid(VolInfo_t *volinfo, int nid, PVOID arg, int action, int mid)
{
fs_log_rec_t *p = (fs_log_rec_t *) arg;
NTSTATUS err = ERROR_SUCCESS;
fs_id_t *fs_id;
HANDLE vhdl;
WCHAR name[MAXPATH];
int name_sz = sizeof(name);
ASSERT(nid == mid);
vhdl = FS_GET_VOL_HANDLE(volinfo, nid);
if (vhdl == INVALID_HANDLE_VALUE) {
FsLogUndo(("FsUndoXid Failed to get crs handle %d\n",
nid));
return STATUS_TRANSACTION_ABORTED;
}
fs_id = &p->fs_id;
FsLogReplay(("Query cmd %d nid %d objid %I64x:%I64x\n", p->command,
nid, (*fs_id)[0], (*fs_id)[1]));
switch(p->command) {
case FS_CREATE:
case FS_MKDIR:
// issue a lookup,
// note: use id instead of fs_id since we don't have fs_id till
// a prepare has committed.
fs_id = &p->id;
err = xFsGetPathById(vhdl, fs_id, name, &name_sz);
if (err == STATUS_OBJECT_PATH_NOT_FOUND)
err = STATUS_CANCELLED;
break;
case FS_REMOVE:
err = xFsGetPathById(vhdl, fs_id, name, &name_sz);
if (err == STATUS_OBJECT_PATH_NOT_FOUND)
err = STATUS_SUCCESS;
else if (err == STATUS_SUCCESS)
err = STATUS_CANCELLED;
break;
default:
// can't make any determination
err = STATUS_NOT_FOUND;
break;
}
FsLogReplay(("Commit Status %x\n", err));
return err;
}
////////////////////////// Recovery Callback ////////////////////////////
NTSTATUS
WINAPI
FsCrsCallback(PVOID hd, int nid, CrsRecord_t *arg, int action, int mid)
{
NTSTATUS err = STATUS_SUCCESS;
VolInfo_t *volinfo = (VolInfo_t *) hd;
switch(action) {
case CRS_ACTION_REPLAY:
err = FsReplayXid(volinfo, nid, arg, action, mid);
break;
case CRS_ACTION_UNDO:
err = FsUndoXid(volinfo, nid, arg, action, mid);
break;
case CRS_ACTION_QUERY:
err = FsQueryXid(volinfo, nid, arg, action, mid);
break;
case CRS_ACTION_DONE:
FsLogReplay(("Vol %S done recovery nid %d mid %d\n",
volinfo->Root, nid, mid));
// we now need to walk our current open table and join this new replica.
{
UserInfo_t *u = volinfo->UserList;
for (; u != NULL; u = u->Next) {
err = FsReplayFid(volinfo, u, nid, mid);
if (err != STATUS_SUCCESS)
break;
}
}
break;
case CRS_ACTION_COPY:
FsLogReplay(("FullCopy Disk%d -> Disk%d\n", mid, nid));
//
// We need to open new directory handles instead of using current ones. Otherwise,
// our enum on directory might not be consistent
//
if (0) {
WCHAR path[MAXPATH];
HANDLE mvfd, ovfd;
UINT32 disp;
// open root volume directory
disp = FILE_OPEN;
StringCchPrintfW(path, MAXPATH, L"\\??\\%s\\%s\\", FS_GET_VOL_NAME(volinfo, mid), volinfo->Root);
err = xFsCreate(&mvfd, NULL, path, wcslen(path),
FILE_DIRECTORY_FILE|FILE_SYNCHRONOUS_IO_ALERT,
0,
FILE_SHARE_READ|FILE_SHARE_WRITE,
&disp,
FILE_GENERIC_READ|FILE_GENERIC_WRITE|FILE_GENERIC_EXECUTE,
NULL, 0);
if (err != STATUS_SUCCESS) {
FsLogReplay(("Failed to open mid %d '%S' err %x\n", mid, path, err));
return err;
}
// open root volume directory
disp = FILE_OPEN;
StringCchPrintfW(path, MAXPATH, L"\\??\\%s\\%s\\", FS_GET_VOL_NAME(volinfo, nid), volinfo->Root);
err = xFsCreate(&ovfd, NULL, path, wcslen(path),
FILE_DIRECTORY_FILE|FILE_SYNCHRONOUS_IO_ALERT,
0,
FILE_SHARE_READ|FILE_SHARE_WRITE,
&disp,
FILE_GENERIC_READ|FILE_GENERIC_WRITE|FILE_GENERIC_EXECUTE,
NULL, 0);
if (err != STATUS_SUCCESS) {
xFsClose(mvfd);
FsLogReplay(("Failed to open nid %d '%S' err %x\n", mid, path, err));
return err;
}
err = xFsCopyTree(mvfd, ovfd);
xFsClose(mvfd);
xFsClose(ovfd);
} else {
err = xFsCopyTree(FS_GET_VOL_HANDLE(volinfo, mid),
FS_GET_VOL_HANDLE(volinfo,nid));
}
FsLogReplay(("SlowStart Crs%d status %x\n", nid, err));
break;
default:
FsLogReplay(("Unknown action %d\n", action));
ASSERT(FALSE);
}
return err;
}