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-rw-r--r--source3/smbd/aio.c116
1 files changed, 41 insertions, 75 deletions
diff --git a/source3/smbd/aio.c b/source3/smbd/aio.c
index 7e27c27b5a..fd553c3fc4 100644
--- a/source3/smbd/aio.c
+++ b/source3/smbd/aio.c
@@ -45,21 +45,28 @@ struct aio_extra {
struct aio_extra *next, *prev;
SMB_STRUCT_AIOCB acb;
files_struct *fsp;
- bool read_req;
- uint16 mid;
- char *inbuf;
+ struct smb_request *req;
char *outbuf;
+ int (*handle_completion)(struct aio_extra *ex);
};
+static int handle_aio_read_complete(struct aio_extra *aio_ex);
+static int handle_aio_write_complete(struct aio_extra *aio_ex);
+
static struct aio_extra *aio_list_head;
+static int aio_extra_destructor(struct aio_extra *aio_ex)
+{
+ DLIST_REMOVE(aio_list_head, aio_ex);
+ return 0;
+}
+
/****************************************************************************
Create the extended aio struct we must keep around for the lifetime
- of the aio_read call.
+ of the aio call.
*****************************************************************************/
-static struct aio_extra *create_aio_ex_read(files_struct *fsp, size_t buflen,
- uint16 mid)
+static struct aio_extra *create_aio_extra(files_struct *fsp, size_t buflen)
{
struct aio_extra *aio_ex = TALLOC_ZERO_P(NULL, struct aio_extra);
@@ -70,51 +77,15 @@ static struct aio_extra *create_aio_ex_read(files_struct *fsp, size_t buflen,
/* The output buffer stored in the aio_ex is the start of
the smb return buffer. The buffer used in the acb
is the start of the reply data portion of that buffer. */
- aio_ex->outbuf = TALLOC_ARRAY(aio_ex, char, buflen);
- if (!aio_ex->outbuf) {
- TALLOC_FREE(aio_ex);
- return NULL;
- }
- DLIST_ADD(aio_list_head, aio_ex);
- aio_ex->fsp = fsp;
- aio_ex->read_req = True;
- aio_ex->mid = mid;
- return aio_ex;
-}
-
-/****************************************************************************
- Create the extended aio struct we must keep around for the lifetime
- of the aio_write call.
-*****************************************************************************/
-
-static struct aio_extra *create_aio_ex_write(files_struct *fsp,
- size_t inbuflen,
- size_t outbuflen,
- uint16 mid)
-{
- struct aio_extra *aio_ex = TALLOC_ZERO_P(NULL, struct aio_extra);
- if (!aio_ex) {
- return NULL;
- }
-
- /* We need space for an output reply of outbuflen bytes. */
- aio_ex->outbuf = TALLOC_ARRAY(aio_ex, char, outbuflen);
+ aio_ex->outbuf = TALLOC_ARRAY(aio_ex, char, buflen);
if (!aio_ex->outbuf) {
TALLOC_FREE(aio_ex);
return NULL;
}
-
- aio_ex->inbuf = TALLOC_ARRAY(aio_ex, char, inbuflen);
- if (!aio_ex->inbuf) {
- TALLOC_FREE(aio_ex);
- return NULL;
- }
-
DLIST_ADD(aio_list_head, aio_ex);
+ talloc_set_destructor(aio_ex, aio_extra_destructor);
aio_ex->fsp = fsp;
- aio_ex->read_req = False;
- aio_ex->mid = mid;
return aio_ex;
}
@@ -127,7 +98,7 @@ static struct aio_extra *find_aio_ex(uint16 mid)
struct aio_extra *p;
for( p = aio_list_head; p; p = p->next) {
- if (mid == p->mid) {
+ if (mid == p->req->mid) {
return p;
}
}
@@ -245,10 +216,11 @@ bool schedule_aio_read_and_X(connection_struct *conn,
bufsize = smb_size + 12 * 2 + smb_maxcnt;
- if ((aio_ex = create_aio_ex_read(fsp, bufsize, req->mid)) == NULL) {
+ if ((aio_ex = create_aio_extra(fsp, bufsize)) == NULL) {
DEBUG(10,("schedule_aio_read_and_X: malloc fail.\n"));
return False;
}
+ aio_ex->handle_completion = handle_aio_read_complete;
construct_reply_common_req(req, aio_ex->outbuf);
srv_set_message(aio_ex->outbuf, 12, 0, True);
@@ -264,7 +236,7 @@ bool schedule_aio_read_and_X(connection_struct *conn,
a->aio_offset = startpos;
a->aio_sigevent.sigev_notify = SIGEV_SIGNAL;
a->aio_sigevent.sigev_signo = RT_SIGNAL_AIO;
- a->aio_sigevent.sigev_value.sival_int = aio_ex->mid;
+ a->aio_sigevent.sigev_value.sival_int = req->mid;
become_root();
ret = SMB_VFS_AIO_READ(fsp, a);
@@ -277,12 +249,14 @@ bool schedule_aio_read_and_X(connection_struct *conn,
return False;
}
+ aio_ex->req = talloc_move(aio_ex, &req);
+
DEBUG(10,("schedule_aio_read_and_X: scheduled aio_read for file %s, "
"offset %.0f, len = %u (mid = %u)\n",
fsp->fsp_name, (double)startpos, (unsigned int)smb_maxcnt,
- (unsigned int)aio_ex->mid ));
+ (unsigned int)aio_ex->req->mid ));
- srv_defer_sign_response(aio_ex->mid);
+ srv_defer_sign_response(aio_ex->req->mid);
outstanding_aio_calls++;
return True;
}
@@ -299,7 +273,7 @@ bool schedule_aio_write_and_X(connection_struct *conn,
{
struct aio_extra *aio_ex;
SMB_STRUCT_AIOCB *a;
- size_t inbufsize, outbufsize;
+ size_t bufsize;
bool write_through = BITSETW(req->vwv+7,0);
size_t min_aio_write_size = lp_aio_write_size(SNUM(conn));
int ret;
@@ -340,21 +314,16 @@ bool schedule_aio_write_and_X(connection_struct *conn,
return False;
}
- inbufsize = smb_len(req->inbuf) + 4;
- reply_outbuf(req, 6, 0);
- outbufsize = smb_len(req->outbuf) + 4;
- if (!(aio_ex = create_aio_ex_write(fsp, inbufsize, outbufsize,
- req->mid))) {
+ bufsize = smb_size + 6*2;
+
+ if (!(aio_ex = create_aio_extra(fsp, bufsize))) {
DEBUG(0,("schedule_aio_write_and_X: malloc fail.\n"));
return False;
}
+ aio_ex->handle_completion = handle_aio_write_complete;
- /* Copy the SMB header already setup in outbuf. */
- memcpy(aio_ex->inbuf, req->inbuf, inbufsize);
-
- /* Copy the SMB header already setup in outbuf. */
- memcpy(aio_ex->outbuf, req->outbuf, outbufsize);
- TALLOC_FREE(req->outbuf);
+ construct_reply_common_req(req, aio_ex->outbuf);
+ srv_set_message(aio_ex->outbuf, 6, 0, True);
SCVAL(aio_ex->outbuf,smb_vwv0,0xFF); /* Never a chained reply. */
a = &aio_ex->acb;
@@ -362,12 +331,12 @@ bool schedule_aio_write_and_X(connection_struct *conn,
/* Now set up the aio record for the write call. */
a->aio_fildes = fsp->fh->fd;
- a->aio_buf = aio_ex->inbuf + (PTR_DIFF(data, req->inbuf));
+ a->aio_buf = data;
a->aio_nbytes = numtowrite;
a->aio_offset = startpos;
a->aio_sigevent.sigev_notify = SIGEV_SIGNAL;
a->aio_sigevent.sigev_signo = RT_SIGNAL_AIO;
- a->aio_sigevent.sigev_value.sival_int = aio_ex->mid;
+ a->aio_sigevent.sigev_value.sival_int = req->mid;
become_root();
ret = SMB_VFS_AIO_WRITE(fsp, a);
@@ -380,6 +349,8 @@ bool schedule_aio_write_and_X(connection_struct *conn,
return False;
}
+ aio_ex->req = talloc_move(aio_ex, &req);
+
release_level_2_oplocks_on_change(fsp);
if (!write_through && !lp_syncalways(SNUM(fsp->conn))
@@ -397,7 +368,7 @@ bool schedule_aio_write_and_X(connection_struct *conn,
DEBUG(10,("schedule_aio_write_and_X: scheduled aio_write "
"behind for file %s\n", fsp->fsp_name ));
} else {
- srv_defer_sign_response(aio_ex->mid);
+ srv_defer_sign_response(aio_ex->req->mid);
}
outstanding_aio_calls++;
@@ -405,7 +376,7 @@ bool schedule_aio_write_and_X(connection_struct *conn,
"%s, offset %.0f, len = %u (mid = %u) "
"outstanding_aio_calls = %d\n",
fsp->fsp_name, (double)startpos, (unsigned int)numtowrite,
- (unsigned int)aio_ex->mid, outstanding_aio_calls ));
+ (unsigned int)aio_ex->req->mid, outstanding_aio_calls ));
return True;
}
@@ -433,7 +404,7 @@ static int handle_aio_read_complete(struct aio_extra *aio_ex)
/* If errno is ECANCELED then don't return anything to the
* client. */
if (errno == ECANCELED) {
- srv_cancel_sign_response(aio_ex->mid);
+ srv_cancel_sign_response(aio_ex->req->mid);
return 0;
}
@@ -527,7 +498,7 @@ static int handle_aio_write_complete(struct aio_extra *aio_ex)
/* If errno is ECANCELED then don't return anything to the
* client. */
if (errno == ECANCELED) {
- srv_cancel_sign_response(aio_ex->mid);
+ srv_cancel_sign_response(aio_ex->req->mid);
return 0;
}
@@ -535,7 +506,7 @@ static int handle_aio_write_complete(struct aio_extra *aio_ex)
ERROR_BOTH(map_nt_error_from_unix(ret), ERRHRD, ERRdiskfull);
srv_set_message(outbuf,0,0,true);
} else {
- bool write_through = BITSETW(aio_ex->inbuf+smb_vwv7,0);
+ bool write_through = BITSETW(aio_ex->req->inbuf+smb_vwv7,0);
NTSTATUS status;
SSVAL(outbuf,smb_vwv2,nwritten);
@@ -591,16 +562,11 @@ static bool handle_aio_completed(struct aio_extra *aio_ex, int *perr)
if (SMB_VFS_AIO_ERROR(aio_ex->fsp, &aio_ex->acb) == EINPROGRESS) {
DEBUG(10,( "handle_aio_completed: operation mid %u still in "
"process for file %s\n",
- aio_ex->mid, aio_ex->fsp->fsp_name ));
+ aio_ex->req->mid, aio_ex->fsp->fsp_name ));
return False;
}
- if (aio_ex->read_req) {
- err = handle_aio_read_complete(aio_ex);
- } else {
- err = handle_aio_write_complete(aio_ex);
- }
-
+ err = aio_ex->handle_completion(aio_ex);
if (err) {
*perr = err; /* Only save non-zero errors. */
}
generated by cgit (git 2.34.1) at 2024-10-30 06:22:40 +0000