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mirror of https://github.com/samba-team/samba.git synced 2025-01-12 09:18:10 +03:00

Ensure everywhere we defer an incoming SMB request (blocking lock queue,

in oplock break state, change notify queue) we also push the MID onto
the deferred signing queue. Tomorrow I will test this with valgrind and
oplock tests.
Jeremy.
(This used to be commit 33a377f372)
This commit is contained in:
Jeremy Allison 2003-07-24 06:56:56 +00:00
parent 08634e26e4
commit 0c9433c031
4 changed files with 227 additions and 221 deletions

View File

@ -28,16 +28,16 @@ extern char *OutBuffer;
*****************************************************************************/
typedef struct {
ubi_slNode msg_next;
int com_type;
files_struct *fsp;
time_t expire_time;
int lock_num;
SMB_BIG_UINT offset;
SMB_BIG_UINT count;
uint16 lock_pid;
char *inbuf;
int length;
ubi_slNode msg_next;
int com_type;
files_struct *fsp;
time_t expire_time;
int lock_num;
SMB_BIG_UINT offset;
SMB_BIG_UINT count;
uint16 lock_pid;
char *inbuf;
int length;
} blocking_lock_record;
static ubi_slList blocking_lock_queue = { NULL, (ubi_slNodePtr)&blocking_lock_queue, 0};
@ -48,8 +48,8 @@ static ubi_slList blocking_lock_queue = { NULL, (ubi_slNodePtr)&blocking_lock_qu
static void free_blocking_lock_record(blocking_lock_record *blr)
{
SAFE_FREE(blr->inbuf);
SAFE_FREE(blr);
SAFE_FREE(blr->inbuf);
SAFE_FREE(blr);
}
/****************************************************************************
@ -58,17 +58,17 @@ static void free_blocking_lock_record(blocking_lock_record *blr)
static files_struct *get_fsp_from_pkt(char *inbuf)
{
switch(CVAL(inbuf,smb_com)) {
case SMBlock:
case SMBlockread:
return file_fsp(inbuf,smb_vwv0);
case SMBlockingX:
return file_fsp(inbuf,smb_vwv2);
default:
DEBUG(0,("get_fsp_from_pkt: PANIC - unknown type on blocking lock queue - exiting.!\n"));
exit_server("PANIC - unknown type on blocking lock queue");
}
return NULL; /* Keep compiler happy. */
switch(CVAL(inbuf,smb_com)) {
case SMBlock:
case SMBlockread:
return file_fsp(inbuf,smb_vwv0);
case SMBlockingX:
return file_fsp(inbuf,smb_vwv2);
default:
DEBUG(0,("get_fsp_from_pkt: PANIC - unknown type on blocking lock queue - exiting.!\n"));
exit_server("PANIC - unknown type on blocking lock queue");
}
return NULL; /* Keep compiler happy. */
}
/****************************************************************************
@ -77,7 +77,7 @@ static files_struct *get_fsp_from_pkt(char *inbuf)
static BOOL in_chained_smb(void)
{
return (chain_size != 0);
return (chain_size != 0);
}
static void received_unlock_msg(int msg_type, pid_t src, void *buf, size_t len);
@ -89,66 +89,68 @@ static void received_unlock_msg(int msg_type, pid_t src, void *buf, size_t len);
BOOL push_blocking_lock_request( char *inbuf, int length, int lock_timeout,
int lock_num, uint16 lock_pid, SMB_BIG_UINT offset, SMB_BIG_UINT count)
{
static BOOL set_lock_msg;
blocking_lock_record *blr;
NTSTATUS status;
static BOOL set_lock_msg;
blocking_lock_record *blr;
NTSTATUS status;
if(in_chained_smb() ) {
DEBUG(0,("push_blocking_lock_request: cannot queue a chained request (currently).\n"));
return False;
}
if(in_chained_smb() ) {
DEBUG(0,("push_blocking_lock_request: cannot queue a chained request (currently).\n"));
return False;
}
/*
* Now queue an entry on the blocking lock queue. We setup
* the expiration time here.
*/
/*
* Now queue an entry on the blocking lock queue. We setup
* the expiration time here.
*/
if((blr = (blocking_lock_record *)malloc(sizeof(blocking_lock_record))) == NULL) {
DEBUG(0,("push_blocking_lock_request: Malloc fail !\n" ));
return False;
}
if((blr = (blocking_lock_record *)malloc(sizeof(blocking_lock_record))) == NULL) {
DEBUG(0,("push_blocking_lock_request: Malloc fail !\n" ));
return False;
}
if((blr->inbuf = (char *)malloc(length)) == NULL) {
DEBUG(0,("push_blocking_lock_request: Malloc fail (2)!\n" ));
SAFE_FREE(blr);
return False;
}
if((blr->inbuf = (char *)malloc(length)) == NULL) {
DEBUG(0,("push_blocking_lock_request: Malloc fail (2)!\n" ));
SAFE_FREE(blr);
return False;
}
blr->com_type = CVAL(inbuf,smb_com);
blr->fsp = get_fsp_from_pkt(inbuf);
blr->expire_time = (lock_timeout == -1) ? (time_t)-1 : time(NULL) + (time_t)lock_timeout;
blr->lock_num = lock_num;
blr->lock_pid = lock_pid;
blr->offset = offset;
blr->count = count;
memcpy(blr->inbuf, inbuf, length);
blr->length = length;
blr->com_type = CVAL(inbuf,smb_com);
blr->fsp = get_fsp_from_pkt(inbuf);
blr->expire_time = (lock_timeout == -1) ? (time_t)-1 : time(NULL) + (time_t)lock_timeout;
blr->lock_num = lock_num;
blr->lock_pid = lock_pid;
blr->offset = offset;
blr->count = count;
memcpy(blr->inbuf, inbuf, length);
blr->length = length;
/* Add a pending lock record for this. */
status = brl_lock(blr->fsp->dev, blr->fsp->inode, blr->fsp->fnum,
lock_pid, sys_getpid(), blr->fsp->conn->cnum,
offset, count,
PENDING_LOCK);
/* Add a pending lock record for this. */
status = brl_lock(blr->fsp->dev, blr->fsp->inode, blr->fsp->fnum,
lock_pid, sys_getpid(), blr->fsp->conn->cnum,
offset, count, PENDING_LOCK);
if (!NT_STATUS_IS_OK(status)) {
DEBUG(0,("push_blocking_lock_request: failed to add PENDING_LOCK record.\n"));
free_blocking_lock_record(blr);
return False;
}
if (!NT_STATUS_IS_OK(status)) {
DEBUG(0,("push_blocking_lock_request: failed to add PENDING_LOCK record.\n"));
free_blocking_lock_record(blr);
return False;
}
ubi_slAddTail(&blocking_lock_queue, blr);
ubi_slAddTail(&blocking_lock_queue, blr);
/* Ensure we'll receive messages when this is unlocked. */
if (!set_lock_msg) {
message_register(MSG_SMB_UNLOCK, received_unlock_msg);
set_lock_msg = True;
}
/* Ensure we'll receive messages when this is unlocked. */
if (!set_lock_msg) {
message_register(MSG_SMB_UNLOCK, received_unlock_msg);
set_lock_msg = True;
}
DEBUG(3,("push_blocking_lock_request: lock request length=%d blocked with expiry time %d (+%d) \
DEBUG(3,("push_blocking_lock_request: lock request length=%d blocked with expiry time %d (+%d) \
for fnum = %d, name = %s\n", length, (int)blr->expire_time, lock_timeout,
blr->fsp->fnum, blr->fsp->fsp_name ));
blr->fsp->fnum, blr->fsp->fsp_name ));
return True;
/* Push the MID of this packet on the signing queue. */
srv_defer_sign_response(SVAL(inbuf,smb_mid));
return True;
}
/****************************************************************************
@ -170,27 +172,27 @@ static void send_blocking_reply(char *outbuf, int outsize)
static void reply_lockingX_success(blocking_lock_record *blr)
{
char *outbuf = OutBuffer;
int bufsize = BUFFER_SIZE;
char *inbuf = blr->inbuf;
int outsize = 0;
char *outbuf = OutBuffer;
int bufsize = BUFFER_SIZE;
char *inbuf = blr->inbuf;
int outsize = 0;
construct_reply_common(inbuf, outbuf);
set_message(outbuf,2,0,True);
construct_reply_common(inbuf, outbuf);
set_message(outbuf,2,0,True);
/*
* As this message is a lockingX call we must handle
* any following chained message correctly.
* This is normally handled in construct_reply(),
* but as that calls switch_message, we can't use
* that here and must set up the chain info manually.
*/
/*
* As this message is a lockingX call we must handle
* any following chained message correctly.
* This is normally handled in construct_reply(),
* but as that calls switch_message, we can't use
* that here and must set up the chain info manually.
*/
outsize = chain_reply(inbuf,outbuf,blr->length,bufsize);
outsize = chain_reply(inbuf,outbuf,blr->length,bufsize);
outsize += chain_size;
outsize += chain_size;
send_blocking_reply(outbuf,outsize);
send_blocking_reply(outbuf,outsize);
}
/****************************************************************************
@ -492,18 +494,18 @@ Waiting....\n",
static BOOL blocking_lock_record_process(blocking_lock_record *blr)
{
switch(blr->com_type) {
case SMBlock:
return process_lock(blr);
case SMBlockread:
return process_lockread(blr);
case SMBlockingX:
return process_lockingX(blr);
default:
DEBUG(0,("blocking_lock_record_process: PANIC - unknown type on blocking lock queue - exiting.!\n"));
exit_server("PANIC - unknown type on blocking lock queue");
}
return False; /* Keep compiler happy. */
switch(blr->com_type) {
case SMBlock:
return process_lock(blr);
case SMBlockread:
return process_lockread(blr);
case SMBlockingX:
return process_lockingX(blr);
default:
DEBUG(0,("blocking_lock_record_process: PANIC - unknown type on blocking lock queue - exiting.!\n"));
exit_server("PANIC - unknown type on blocking lock queue");
}
return False; /* Keep compiler happy. */
}
/****************************************************************************
@ -512,27 +514,27 @@ static BOOL blocking_lock_record_process(blocking_lock_record *blr)
void remove_pending_lock_requests_by_fid(files_struct *fsp)
{
blocking_lock_record *blr = (blocking_lock_record *)ubi_slFirst( &blocking_lock_queue );
blocking_lock_record *prev = NULL;
blocking_lock_record *blr = (blocking_lock_record *)ubi_slFirst( &blocking_lock_queue );
blocking_lock_record *prev = NULL;
while(blr != NULL) {
if(blr->fsp->fnum == fsp->fnum) {
while(blr != NULL) {
if(blr->fsp->fnum == fsp->fnum) {
DEBUG(10,("remove_pending_lock_requests_by_fid - removing request type %d for \
DEBUG(10,("remove_pending_lock_requests_by_fid - removing request type %d for \
file %s fnum = %d\n", blr->com_type, fsp->fsp_name, fsp->fnum ));
brl_unlock(blr->fsp->dev, blr->fsp->inode, blr->fsp->fnum,
blr->lock_pid, sys_getpid(), blr->fsp->conn->cnum,
blr->offset, blr->count, True, NULL, NULL);
brl_unlock(blr->fsp->dev, blr->fsp->inode, blr->fsp->fnum,
blr->lock_pid, sys_getpid(), blr->fsp->conn->cnum,
blr->offset, blr->count, True, NULL, NULL);
free_blocking_lock_record((blocking_lock_record *)ubi_slRemNext( &blocking_lock_queue, prev));
blr = (blocking_lock_record *)(prev ? ubi_slNext(prev) : ubi_slFirst(&blocking_lock_queue));
continue;
}
free_blocking_lock_record((blocking_lock_record *)ubi_slRemNext( &blocking_lock_queue, prev));
blr = (blocking_lock_record *)(prev ? ubi_slNext(prev) : ubi_slFirst(&blocking_lock_queue));
continue;
}
prev = blr;
blr = (blocking_lock_record *)ubi_slNext(blr);
}
prev = blr;
blr = (blocking_lock_record *)ubi_slNext(blr);
}
}
/****************************************************************************
@ -541,28 +543,28 @@ file %s fnum = %d\n", blr->com_type, fsp->fsp_name, fsp->fnum ));
void remove_pending_lock_requests_by_mid(int mid)
{
blocking_lock_record *blr = (blocking_lock_record *)ubi_slFirst( &blocking_lock_queue );
blocking_lock_record *prev = NULL;
blocking_lock_record *blr = (blocking_lock_record *)ubi_slFirst( &blocking_lock_queue );
blocking_lock_record *prev = NULL;
while(blr != NULL) {
if(SVAL(blr->inbuf,smb_mid) == mid) {
files_struct *fsp = blr->fsp;
while(blr != NULL) {
if(SVAL(blr->inbuf,smb_mid) == mid) {
files_struct *fsp = blr->fsp;
DEBUG(10,("remove_pending_lock_requests_by_mid - removing request type %d for \
DEBUG(10,("remove_pending_lock_requests_by_mid - removing request type %d for \
file %s fnum = %d\n", blr->com_type, fsp->fsp_name, fsp->fnum ));
blocking_lock_reply_error(blr,NT_STATUS_CANCELLED);
brl_unlock(blr->fsp->dev, blr->fsp->inode, blr->fsp->fnum,
blr->lock_pid, sys_getpid(), blr->fsp->conn->cnum,
blr->offset, blr->count, True, NULL, NULL);
free_blocking_lock_record((blocking_lock_record *)ubi_slRemNext( &blocking_lock_queue, prev));
blr = (blocking_lock_record *)(prev ? ubi_slNext(prev) : ubi_slFirst(&blocking_lock_queue));
continue;
}
blocking_lock_reply_error(blr,NT_STATUS_CANCELLED);
brl_unlock(blr->fsp->dev, blr->fsp->inode, blr->fsp->fnum,
blr->lock_pid, sys_getpid(), blr->fsp->conn->cnum,
blr->offset, blr->count, True, NULL, NULL);
free_blocking_lock_record((blocking_lock_record *)ubi_slRemNext( &blocking_lock_queue, prev));
blr = (blocking_lock_record *)(prev ? ubi_slNext(prev) : ubi_slFirst(&blocking_lock_queue));
continue;
}
prev = blr;
blr = (blocking_lock_record *)ubi_slNext(blr);
}
prev = blr;
blr = (blocking_lock_record *)ubi_slNext(blr);
}
}
/****************************************************************************
@ -611,112 +613,112 @@ unsigned blocking_locks_timeout(unsigned default_timeout)
void process_blocking_lock_queue(time_t t)
{
blocking_lock_record *blr = (blocking_lock_record *)ubi_slFirst( &blocking_lock_queue );
blocking_lock_record *prev = NULL;
blocking_lock_record *blr = (blocking_lock_record *)ubi_slFirst( &blocking_lock_queue );
blocking_lock_record *prev = NULL;
if(blr == NULL)
return;
if(blr == NULL)
return;
/*
* Go through the queue and see if we can get any of the locks.
*/
/*
* Go through the queue and see if we can get any of the locks.
*/
while(blr != NULL) {
connection_struct *conn = NULL;
uint16 vuid;
files_struct *fsp = NULL;
while(blr != NULL) {
connection_struct *conn = NULL;
uint16 vuid;
files_struct *fsp = NULL;
/*
* Ensure we don't have any old chain_fsp values
* sitting around....
*/
chain_size = 0;
file_chain_reset();
fsp = blr->fsp;
/*
* Ensure we don't have any old chain_fsp values
* sitting around....
*/
chain_size = 0;
file_chain_reset();
fsp = blr->fsp;
conn = conn_find(SVAL(blr->inbuf,smb_tid));
vuid = (lp_security() == SEC_SHARE) ? UID_FIELD_INVALID :
SVAL(blr->inbuf,smb_uid);
conn = conn_find(SVAL(blr->inbuf,smb_tid));
vuid = (lp_security() == SEC_SHARE) ? UID_FIELD_INVALID :
SVAL(blr->inbuf,smb_uid);
DEBUG(5,("process_blocking_lock_queue: examining pending lock fnum = %d for file %s\n",
fsp->fnum, fsp->fsp_name ));
DEBUG(5,("process_blocking_lock_queue: examining pending lock fnum = %d for file %s\n",
fsp->fnum, fsp->fsp_name ));
if((blr->expire_time != -1) && (blr->expire_time <= t)) {
/*
* Lock expired - throw away all previously
* obtained locks and return lock error.
*/
DEBUG(5,("process_blocking_lock_queue: pending lock fnum = %d for file %s timed out.\n",
fsp->fnum, fsp->fsp_name ));
if((blr->expire_time != -1) && (blr->expire_time <= t)) {
/*
* Lock expired - throw away all previously
* obtained locks and return lock error.
*/
DEBUG(5,("process_blocking_lock_queue: pending lock fnum = %d for file %s timed out.\n",
fsp->fnum, fsp->fsp_name ));
brl_unlock(fsp->dev, fsp->inode, fsp->fnum,
blr->lock_pid, sys_getpid(), conn->cnum,
blr->offset, blr->count, True, NULL, NULL);
brl_unlock(fsp->dev, fsp->inode, fsp->fnum,
blr->lock_pid, sys_getpid(), conn->cnum,
blr->offset, blr->count, True, NULL, NULL);
blocking_lock_reply_error(blr,NT_STATUS_FILE_LOCK_CONFLICT);
free_blocking_lock_record((blocking_lock_record *)ubi_slRemNext( &blocking_lock_queue, prev));
blr = (blocking_lock_record *)(prev ? ubi_slNext(prev) : ubi_slFirst(&blocking_lock_queue));
continue;
}
blocking_lock_reply_error(blr,NT_STATUS_FILE_LOCK_CONFLICT);
free_blocking_lock_record((blocking_lock_record *)ubi_slRemNext( &blocking_lock_queue, prev));
blr = (blocking_lock_record *)(prev ? ubi_slNext(prev) : ubi_slFirst(&blocking_lock_queue));
continue;
}
if(!change_to_user(conn,vuid)) {
DEBUG(0,("process_blocking_lock_queue: Unable to become user vuid=%d.\n",
vuid ));
/*
* Remove the entry and return an error to the client.
*/
blocking_lock_reply_error(blr,NT_STATUS_ACCESS_DENIED);
if(!change_to_user(conn,vuid)) {
DEBUG(0,("process_blocking_lock_queue: Unable to become user vuid=%d.\n",
vuid ));
/*
* Remove the entry and return an error to the client.
*/
blocking_lock_reply_error(blr,NT_STATUS_ACCESS_DENIED);
brl_unlock(fsp->dev, fsp->inode, fsp->fnum,
blr->lock_pid, sys_getpid(), conn->cnum,
blr->offset, blr->count, True, NULL, NULL);
brl_unlock(fsp->dev, fsp->inode, fsp->fnum,
blr->lock_pid, sys_getpid(), conn->cnum,
blr->offset, blr->count, True, NULL, NULL);
free_blocking_lock_record((blocking_lock_record *)ubi_slRemNext( &blocking_lock_queue, prev));
blr = (blocking_lock_record *)(prev ? ubi_slNext(prev) : ubi_slFirst(&blocking_lock_queue));
continue;
}
free_blocking_lock_record((blocking_lock_record *)ubi_slRemNext( &blocking_lock_queue, prev));
blr = (blocking_lock_record *)(prev ? ubi_slNext(prev) : ubi_slFirst(&blocking_lock_queue));
continue;
}
if(!set_current_service(conn,True)) {
DEBUG(0,("process_blocking_lock_queue: Unable to become service Error was %s.\n", strerror(errno) ));
/*
* Remove the entry and return an error to the client.
*/
blocking_lock_reply_error(blr,NT_STATUS_ACCESS_DENIED);
if(!set_current_service(conn,True)) {
DEBUG(0,("process_blocking_lock_queue: Unable to become service Error was %s.\n", strerror(errno) ));
/*
* Remove the entry and return an error to the client.
*/
blocking_lock_reply_error(blr,NT_STATUS_ACCESS_DENIED);
brl_unlock(fsp->dev, fsp->inode, fsp->fnum,
blr->lock_pid, sys_getpid(), conn->cnum,
blr->offset, blr->count, True, NULL, NULL);
brl_unlock(fsp->dev, fsp->inode, fsp->fnum,
blr->lock_pid, sys_getpid(), conn->cnum,
blr->offset, blr->count, True, NULL, NULL);
free_blocking_lock_record((blocking_lock_record *)ubi_slRemNext( &blocking_lock_queue, prev));
blr = (blocking_lock_record *)(prev ? ubi_slNext(prev) : ubi_slFirst(&blocking_lock_queue));
change_to_root_user();
continue;
}
free_blocking_lock_record((blocking_lock_record *)ubi_slRemNext( &blocking_lock_queue, prev));
blr = (blocking_lock_record *)(prev ? ubi_slNext(prev) : ubi_slFirst(&blocking_lock_queue));
change_to_root_user();
continue;
}
/*
* Go through the remaining locks and try and obtain them.
* The call returns True if all locks were obtained successfully
* and False if we still need to wait.
*/
/*
* Go through the remaining locks and try and obtain them.
* The call returns True if all locks were obtained successfully
* and False if we still need to wait.
*/
if(blocking_lock_record_process(blr)) {
if(blocking_lock_record_process(blr)) {
brl_unlock(fsp->dev, fsp->inode, fsp->fnum,
blr->lock_pid, sys_getpid(), conn->cnum,
blr->offset, blr->count, True, NULL, NULL);
brl_unlock(fsp->dev, fsp->inode, fsp->fnum,
blr->lock_pid, sys_getpid(), conn->cnum,
blr->offset, blr->count, True, NULL, NULL);
free_blocking_lock_record((blocking_lock_record *)ubi_slRemNext( &blocking_lock_queue, prev));
blr = (blocking_lock_record *)(prev ? ubi_slNext(prev) : ubi_slFirst(&blocking_lock_queue));
change_to_root_user();
continue;
}
free_blocking_lock_record((blocking_lock_record *)ubi_slRemNext( &blocking_lock_queue, prev));
blr = (blocking_lock_record *)(prev ? ubi_slNext(prev) : ubi_slFirst(&blocking_lock_queue));
change_to_root_user();
continue;
}
change_to_root_user();
change_to_root_user();
/*
* Move to the next in the list.
*/
prev = blr;
blr = (blocking_lock_record *)ubi_slNext(blr);
}
/*
* Move to the next in the list.
*/
prev = blr;
blr = (blocking_lock_record *)ubi_slNext(blr);
}
}

View File

@ -197,6 +197,9 @@ BOOL change_notify_set(char *inbuf, files_struct *fsp, connection_struct *conn,
DLIST_ADD(change_notify_list, cnbp);
/* Push the MID of this packet on the signing queue. */
srv_defer_sign_response(SVAL(inbuf,smb_mid));
return True;
}

View File

@ -1494,8 +1494,6 @@ static int call_nt_transact_notify_change(connection_struct *conn, char *inbuf,
DEBUG(3,("call_nt_transact_notify_change: notify change called on directory \
name = %s\n", fsp->fsp_name ));
srv_defer_sign_response(SVAL(inbuf,smb_mid));
return -1;
}

View File

@ -87,6 +87,9 @@ static BOOL push_message(ubi_slList *list_head, char *buf, int msg_len)
ubi_slAddTail( list_head, msg);
/* Push the MID of this packet on the signing queue. */
srv_defer_sign_response(SVAL(buf,smb_mid));
return True;
}