[SCM] Samba Shared Repository - branch master updated
Ralph Böhme
slow at samba.org
Mon Mar 23 12:07:02 UTC 2020
The branch, master has been updated
via 4337c144bcb s3: Remove tevent_wait code. The last user was fsp->deferred_close.
via f6efda217c5 s3: VFS: Remove deferred_close from struct files_struct.
via 76b9a3597c9 s3: smbd: Remove all references to fsp->deferred_close.
via b686de4e7ba s3: smbd: Convert async SMB2 close to use the wait_queue idiom.
via 53ee28381e4 s3: smbd: Remove old async versions of SMB1 reply_close().
via fef2054dd0c s3: smbd: Add async internals of reply_close().
via 20290d02a09 s3: smbd: In asnyc do_smb1_close() use the utility function meant for async SMB1 replies.
via 91cdfa3dbb2 s3: smbd: Update reply_close() to modern DBG_ coding style.
via a779f0a58b9 s3: smbd: In SMB1 reply_close() rename all uses of 'struct smb_request' to smb1req.
from c680daae6ad idl/drsblobs: do not overwrite number of schedules == 1
https://git.samba.org/?p=samba.git;a=shortlog;h=master
- Log -----------------------------------------------------------------
commit 4337c144bcbc87b73c019a510a263a9731a0bdf2
Author: Jeremy Allison <jra at samba.org>
Date: Wed Mar 18 16:09:50 2020 -0700
s3: Remove tevent_wait code. The last user was fsp->deferred_close.
Signed-off-by: Jeremy Allison <jra at samba.org>
Reviewed-by: Ralph Boehme <slow at samba.org>
Autobuild-User(master): Ralph Böhme <slow at samba.org>
Autobuild-Date(master): Mon Mar 23 12:06:45 UTC 2020 on sn-devel-184
commit f6efda217c5adc5d76c0752823326c7fdfef701d
Author: Jeremy Allison <jra at samba.org>
Date: Wed Mar 18 16:07:56 2020 -0700
s3: VFS: Remove deferred_close from struct files_struct.
Bump up the VFS number to 43. Samba 4.13 will ship with that.
Signed-off-by: Jeremy Allison <jra at samba.org>
Reviewed-by: Ralph Boehme <slow at samba.org>
commit 76b9a3597c93daefbaa4031e6ab9f136e8aeaece
Author: Jeremy Allison <jra at samba.org>
Date: Wed Mar 18 16:01:18 2020 -0700
s3: smbd: Remove all references to fsp->deferred_close.
We are now free to remove it from struct files_struct.
Signed-off-by: Jeremy Allison <jra at samba.org>
Reviewed-by: Ralph Boehme <slow at samba.org>
commit b686de4e7ba83f6f37b1da175e259d25e75c98d1
Author: Jeremy Allison <jra at samba.org>
Date: Wed Mar 18 15:59:03 2020 -0700
s3: smbd: Convert async SMB2 close to use the wait_queue idiom.
Use the same mechanism to wait for aio on a handle used by
SMB1 reply_tdis(), reply_ulogoffX(), reply_exit(), reply_close()
and SMB2 tree disconnect.
This removes the last user of fsp->deferred_close, allowing
us to remove it.
Signed-off-by: Jeremy Allison <jra at samba.org>
Reviewed-by: Ralph Boehme <slow at samba.org>
commit 53ee28381e4dab93ee2c7cc8329b5deedec87545
Author: Jeremy Allison <jra at samba.org>
Date: Wed Mar 18 15:21:43 2020 -0700
s3: smbd: Remove old async versions of SMB1 reply_close().
Use the common pattern to wait for aio.
Signed-off-by: Jeremy Allison <jra at samba.org>
Reviewed-by: Ralph Boehme <slow at samba.org>
commit fef2054dd0cee95c571ea94edc34ad5bb95deade
Author: Jeremy Allison <jra at samba.org>
Date: Wed Mar 18 15:09:51 2020 -0700
s3: smbd: Add async internals of reply_close().
Waits until all aio requests on the closing fsps
before returning to the client.
Slightly modified version of the existing async
reply_close code, updated to use the wait_queue
pattern standardized in reply_tdis, reply_ulogoffX
and reply_exit.
Done this way (commented out) so it is a clean
diff and it's clear what is being added.
The next commit will remove the old version.
Signed-off-by: Jeremy Allison <jra at samba.org>
Reviewed-by: Ralph Boehme <slow at samba.org>
commit 20290d02a09af16c6f250cd063c910c5fee1cad0
Author: Jeremy Allison <jra at samba.org>
Date: Wed Mar 18 14:32:30 2020 -0700
s3: smbd: In asnyc do_smb1_close() use the utility function meant for async SMB1 replies.
Don't use the raw call.
Signed-off-by: Jeremy Allison <jra at samba.org>
Reviewed-by: Ralph Boehme <slow at samba.org>
commit 91cdfa3dbb23dc78582f405cb52a1d0d819f87c2
Author: Jeremy Allison <jra at samba.org>
Date: Wed Mar 18 14:29:30 2020 -0700
s3: smbd: Update reply_close() to modern DBG_ coding style.
Signed-off-by: Jeremy Allison <jra at samba.org>
Reviewed-by: Ralph Boehme <slow at samba.org>
commit a779f0a58b919a49a905cdc64ed35b02915e1604
Author: Jeremy Allison <jra at samba.org>
Date: Wed Mar 18 14:06:38 2020 -0700
s3: smbd: In SMB1 reply_close() rename all uses of 'struct smb_request' to smb1req.
Will make further changes easier to see, as we now use
req for tevent_req structs.
Signed-off-by: Jeremy Allison <jra at samba.org>
Reviewed-by: Ralph Boehme <slow at samba.org>
-----------------------------------------------------------------------
Summary of changes:
source3/include/vfs.h | 13 +--
source3/lib/tevent_wait.c | 57 -----------
source3/lib/tevent_wait.h | 37 -------
source3/modules/offload_token.c | 10 --
source3/smbd/aio.c | 2 -
source3/smbd/files.c | 14 ---
source3/smbd/reply.c | 218 +++++++++++++++++++++++++---------------
source3/smbd/smb2_close.c | 53 +++++++---
source3/wscript_build | 1 -
9 files changed, 176 insertions(+), 229 deletions(-)
delete mode 100644 source3/lib/tevent_wait.c
delete mode 100644 source3/lib/tevent_wait.h
Changeset truncated at 500 lines:
diff --git a/source3/include/vfs.h b/source3/include/vfs.h
index fec38f20644..85da21513fc 100644
--- a/source3/include/vfs.h
+++ b/source3/include/vfs.h
@@ -290,8 +290,10 @@
/* Version 42 - SMB_VFS_NTIMES() receives null times based on UTIMES_OMIT */
/* Version 42 - Add SMB_VFS_CREATE_DFS_PATHAT() */
/* Version 42 - Add SMB_VFS_READ_DFS_PATHAT() */
+/* Change to Version 43 - will ship with 4.13. */
+/* Version 43 - Remove deferred_close from struct files_struct */
-#define SMB_VFS_INTERFACE_VERSION 42
+#define SMB_VFS_INTERFACE_VERSION 43
/*
All intercepted VFS operations must be declared as static functions inside module source
@@ -441,15 +443,6 @@ typedef struct files_struct {
*/
bool lock_failure_seen;
uint64_t lock_failure_offset;
-
- /*
- * If a close request comes in while we still have aio_requests
- * around, we need to hold back the close. When all aio_requests are
- * done, the aio completion routines need tevent_wait_done() on
- * this. A bit ugly, but before we have close_file() fully async
- * possibly the simplest approach. Thanks, Jeremy for the idea.
- */
- struct tevent_req *deferred_close;
} files_struct;
#define FSP_POSIX_FLAGS_OPEN 0x01
diff --git a/source3/lib/tevent_wait.c b/source3/lib/tevent_wait.c
deleted file mode 100644
index 31bb581d52a..00000000000
--- a/source3/lib/tevent_wait.c
+++ /dev/null
@@ -1,57 +0,0 @@
-/*
- Unix SMB/CIFS implementation.
- Implement a send/recv interface to wait for an external trigger
- Copyright (C) Volker Lendecke 2012
-
- This program is free software; you can redistribute it and/or modify
- it under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version 3 of the License, or
- (at your option) any later version.
-
- This program is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- GNU General Public License for more details.
-
- You should have received a copy of the GNU General Public License
- along with this program. If not, see <http://www.gnu.org/licenses/>.
-*/
-
-#include "lib/replace/replace.h"
-#include "talloc.h"
-#include "tevent.h"
-#include "tevent_wait.h"
-#include "lib/util/tevent_unix.h"
-
-struct tevent_wait_state {
- uint8_t _dummy_;
-};
-
-struct tevent_req *tevent_wait_send(TALLOC_CTX *mem_ctx,
- struct tevent_context *ev)
-{
- struct tevent_req *req;
- struct tevent_wait_state *state;
-
- req = tevent_req_create(mem_ctx, &state, struct tevent_wait_state);
- if (req == NULL) {
- return NULL;
- }
-
- tevent_req_defer_callback(req, ev);
- return req;
-}
-
-void tevent_wait_done(struct tevent_req *req)
-{
- if (req == NULL) {
- return;
- }
-
- tevent_req_done(req);
-}
-
-int tevent_wait_recv(struct tevent_req *req)
-{
- return tevent_req_simple_recv_unix(req);
-}
diff --git a/source3/lib/tevent_wait.h b/source3/lib/tevent_wait.h
deleted file mode 100644
index 97b749191d3..00000000000
--- a/source3/lib/tevent_wait.h
+++ /dev/null
@@ -1,37 +0,0 @@
-/*
- Unix SMB/CIFS implementation.
- Implement a send/recv interface to wait for an external trigger
- Copyright (C) Volker Lendecke 2012
-
- This program is free software; you can redistribute it and/or modify
- it under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version 3 of the License, or
- (at your option) any later version.
-
- This program is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- GNU General Public License for more details.
-
- You should have received a copy of the GNU General Public License
- along with this program. If not, see <http://www.gnu.org/licenses/>.
-*/
-
-#ifndef _TEVENT_WAIT_H
-#define _TEVENT_WAIT_H
-
-#include "talloc.h"
-#include "tevent.h"
-
-/*
- * Just wait for getting a tevent_wait_done. tevent_wait_done can deal with a
- * NULL request.
- */
-
-struct tevent_req *tevent_wait_send(TALLOC_CTX *mem_ctx,
- struct tevent_context *ev);
-int tevent_wait_recv(struct tevent_req *req);
-
-void tevent_wait_done(struct tevent_req *req);
-
-#endif /* _TEVENT_WAIT_H */
diff --git a/source3/modules/offload_token.c b/source3/modules/offload_token.c
index 03bb3309f38..c562f1bab0b 100644
--- a/source3/modules/offload_token.c
+++ b/source3/modules/offload_token.c
@@ -270,16 +270,6 @@ NTSTATUS vfs_offload_token_check_handles(uint32_t fsctl,
return NT_STATUS_ACCESS_DENIED;
}
- if (src_fsp->deferred_close != NULL) {
- DBG_INFO("copy chunk src handle with deferred close.\n");
- return NT_STATUS_ACCESS_DENIED;
- }
-
- if (dst_fsp->deferred_close != NULL) {
- DBG_INFO("copy chunk dst handle with deferred close.\n");
- return NT_STATUS_ACCESS_DENIED;
- }
-
if (src_fsp->closing) {
DBG_INFO("copy chunk src handle with closing in progress.\n");
return NT_STATUS_ACCESS_DENIED;
diff --git a/source3/smbd/aio.c b/source3/smbd/aio.c
index cf35f3297ec..f0073837020 100644
--- a/source3/smbd/aio.c
+++ b/source3/smbd/aio.c
@@ -23,7 +23,6 @@
#include "smbd/globals.h"
#include "../lib/util/tevent_ntstatus.h"
#include "../lib/util/tevent_unix.h"
-#include "lib/tevent_wait.h"
/****************************************************************************
The buffer we keep around whilst an aio request is in process.
@@ -102,7 +101,6 @@ static int aio_del_req_from_fsp(struct aio_req_fsp_link *lnk)
fsp->aio_requests[i] = fsp->aio_requests[fsp->num_aio_requests];
if (fsp->num_aio_requests == 0) {
- tevent_wait_done(fsp->deferred_close);
TALLOC_FREE(fsp->aio_requests);
}
return 0;
diff --git a/source3/smbd/files.c b/source3/smbd/files.c
index a982c0a5980..a9e63192f61 100644
--- a/source3/smbd/files.c
+++ b/source3/smbd/files.c
@@ -578,9 +578,6 @@ files_struct *file_fsp(struct smb_request *req, uint16_t fid)
}
if (req->chain_fsp != NULL) {
- if (req->chain_fsp->deferred_close) {
- return NULL;
- }
if (req->chain_fsp->closing) {
return NULL;
}
@@ -604,10 +601,6 @@ files_struct *file_fsp(struct smb_request *req, uint16_t fid)
return NULL;
}
- if (fsp->deferred_close) {
- return NULL;
- }
-
if (fsp->closing) {
return NULL;
}
@@ -655,10 +648,6 @@ struct files_struct *file_fsp_get(struct smbd_smb2_request *smb2req,
return NULL;
}
- if (fsp->deferred_close) {
- return NULL;
- }
-
if (fsp->closing) {
return NULL;
}
@@ -673,9 +662,6 @@ struct files_struct *file_fsp_smb2(struct smbd_smb2_request *smb2req,
struct files_struct *fsp;
if (smb2req->compat_chain_fsp != NULL) {
- if (smb2req->compat_chain_fsp->deferred_close) {
- return NULL;
- }
if (smb2req->compat_chain_fsp->closing) {
return NULL;
}
diff --git a/source3/smbd/reply.c b/source3/smbd/reply.c
index 5e2c2669310..58bc7d05eab 100644
--- a/source3/smbd/reply.c
+++ b/source3/smbd/reply.c
@@ -41,7 +41,6 @@
#include "auth.h"
#include "smbprofile.h"
#include "../lib/tsocket/tsocket.h"
-#include "lib/tevent_wait.h"
#include "lib/util/tevent_ntstatus.h"
#include "libcli/smb/smb_signing.h"
#include "lib/util/sys_rw_data.h"
@@ -5999,42 +5998,39 @@ static void reply_exit_done(struct tevent_req *req)
return;
}
-struct reply_close_state {
- files_struct *fsp;
- struct smb_request *smbreq;
-};
-
-static void do_smb1_close(struct tevent_req *req);
+static struct tevent_req *reply_close_send(struct smb_request *smb1req,
+ files_struct *fsp);
+static void reply_close_done(struct tevent_req *req);
-void reply_close(struct smb_request *req)
+void reply_close(struct smb_request *smb1req)
{
- connection_struct *conn = req->conn;
+ connection_struct *conn = smb1req->conn;
NTSTATUS status = NT_STATUS_OK;
files_struct *fsp = NULL;
START_PROFILE(SMBclose);
- if (req->wct < 3) {
- reply_nterror(req, NT_STATUS_INVALID_PARAMETER);
+ if (smb1req->wct < 3) {
+ reply_nterror(smb1req, NT_STATUS_INVALID_PARAMETER);
END_PROFILE(SMBclose);
return;
}
- fsp = file_fsp(req, SVAL(req->vwv+0, 0));
+ fsp = file_fsp(smb1req, SVAL(smb1req->vwv+0, 0));
/*
* We can only use check_fsp if we know it's not a directory.
*/
- if (!check_fsp_open(conn, req, fsp)) {
- reply_nterror(req, NT_STATUS_INVALID_HANDLE);
+ if (!check_fsp_open(conn, smb1req, fsp)) {
+ reply_nterror(smb1req, NT_STATUS_INVALID_HANDLE);
END_PROFILE(SMBclose);
return;
}
- DEBUG(3, ("Close %s fd=%d %s (numopen=%d)\n",
+ DBG_NOTICE("Close %s fd=%d %s (numopen=%d)\n",
fsp->is_directory ? "directory" : "file",
fsp->fh->fd, fsp_fnum_dbg(fsp),
- conn->num_files_open));
+ conn->num_files_open);
if (!fsp->is_directory) {
time_t t;
@@ -6043,46 +6039,20 @@ void reply_close(struct smb_request *req)
* Take care of any time sent in the close.
*/
- t = srv_make_unix_date3(req->vwv+1);
+ t = srv_make_unix_date3(smb1req->vwv+1);
set_close_write_time(fsp, time_t_to_full_timespec(t));
}
if (fsp->num_aio_requests != 0) {
+ struct tevent_req *req;
- struct reply_close_state *state;
-
- DEBUG(10, ("closing with aio %u requests pending\n",
- fsp->num_aio_requests));
-
- /*
- * Flag the file as close in progress.
- * This will prevent any more IO being
- * done on it.
- */
- fsp->closing = true;
-
- /*
- * We depend on the aio_extra destructor to take care of this
- * close request once fsp->num_aio_request drops to 0.
- */
-
- fsp->deferred_close = tevent_wait_send(
- fsp, fsp->conn->sconn->ev_ctx);
- if (fsp->deferred_close == NULL) {
+ req = reply_close_send(smb1req, fsp);
+ if (req == NULL) {
status = NT_STATUS_NO_MEMORY;
goto done;
}
-
- state = talloc(fsp, struct reply_close_state);
- if (state == NULL) {
- TALLOC_FREE(fsp->deferred_close);
- status = NT_STATUS_NO_MEMORY;
- goto done;
- }
- state->fsp = fsp;
- state->smbreq = talloc_move(fsp, &req);
- tevent_req_set_callback(fsp->deferred_close, do_smb1_close,
- state);
+ /* We're async. This will complete later. */
+ tevent_req_set_callback(req, reply_close_done, smb1req);
END_PROFILE(SMBclose);
return;
}
@@ -6093,60 +6063,144 @@ void reply_close(struct smb_request *req)
* was probably an I/O error.
*/
- status = close_file(req, fsp, NORMAL_CLOSE);
+ status = close_file(smb1req, fsp, NORMAL_CLOSE);
done:
if (!NT_STATUS_IS_OK(status)) {
- reply_nterror(req, status);
+ reply_nterror(smb1req, status);
END_PROFILE(SMBclose);
return;
}
- reply_outbuf(req, 0, 0);
+ reply_outbuf(smb1req, 0, 0);
END_PROFILE(SMBclose);
return;
}
-static void do_smb1_close(struct tevent_req *req)
+struct reply_close_state {
+ files_struct *fsp;
+ struct tevent_queue *wait_queue;
+};
+
+static void reply_close_wait_done(struct tevent_req *subreq);
+
+/****************************************************************************
+ Async SMB1 close.
+ Note, on failure here we deallocate and return NULL to allow the caller to
+ SMB1 return an error of ERRnomem immediately.
+****************************************************************************/
+
+static struct tevent_req *reply_close_send(struct smb_request *smb1req,
+ files_struct *fsp)
{
- struct reply_close_state *state = tevent_req_callback_data(
- req, struct reply_close_state);
- struct smb_request *smbreq;
- NTSTATUS status;
- int ret;
+ struct tevent_req *req;
+ struct reply_close_state *state;
+ struct tevent_req *subreq;
+ struct smbd_server_connection *sconn = smb1req->sconn;
- ret = tevent_wait_recv(req);
- TALLOC_FREE(req);
- if (ret != 0) {
- DEBUG(10, ("tevent_wait_recv returned %s\n",
- strerror(ret)));
- /*
- * Continue anyway, this should never happen
- */
+ req = tevent_req_create(smb1req, &state,
+ struct reply_close_state);
+ if (req == NULL) {
+ return NULL;
+ }
+ state->wait_queue = tevent_queue_create(state,
+ "reply_close_wait_queue");
+ if (tevent_req_nomem(state->wait_queue, req)) {
+ TALLOC_FREE(req);
+ return NULL;
+ }
+
+ /*
+ * Flag the file as close in progress.
+ * This will prevent any more IO being
+ * done on it.
+ */
+ fsp->closing = true;
+
+ /*
+ * Now wait until all aio requests on this fsp are
+ * finished.
+ *
+ * We don't set a callback, as we just want to block the
+ * wait queue and the talloc_free() of fsp->aio_request
+ * will remove the item from the wait queue.
+ */
+ subreq = tevent_queue_wait_send(fsp->aio_requests,
+ sconn->ev_ctx,
+ state->wait_queue);
+ if (tevent_req_nomem(subreq, req)) {
+ TALLOC_FREE(req);
+ return NULL;
}
/*
- * fsp->smb2_close_request right now is a talloc grandchild of
- * fsp. When we close_file(fsp), it would go with it. No chance to
- * reply...
+ * Now we add our own waiter to the end of the queue,
+ * this way we get notified when all pending requests are finished
+ * and reply to the outstanding SMB1 request.
*/
- smbreq = talloc_move(talloc_tos(), &state->smbreq);
+ subreq = tevent_queue_wait_send(state,
+ sconn->ev_ctx,
+ state->wait_queue);
+ if (tevent_req_nomem(subreq, req)) {
+ TALLOC_FREE(req);
+ return NULL;
+ }
+
+ /*
+ * We're really going async - move the SMB1 request from
+ * a talloc stackframe above us to the conn talloc-context.
+ * We need this to stick around until the wait_done
+ * callback is invoked.
+ */
+ smb1req = talloc_move(sconn, &smb1req);
+
+ tevent_req_set_callback(subreq, reply_close_wait_done, req);
+
+ return req;
+}
+
+static void reply_close_wait_done(struct tevent_req *subreq)
+{
+ struct tevent_req *req = tevent_req_callback_data(
+ subreq, struct tevent_req);
+
+ tevent_queue_wait_recv(subreq);
+ TALLOC_FREE(subreq);
+ tevent_req_done(req);
+}
+
+static NTSTATUS reply_close_recv(struct tevent_req *req)
+{
+ return tevent_req_simple_recv_ntstatus(req);
+}
+
+static void reply_close_done(struct tevent_req *req)
+{
+ struct smb_request *smb1req = tevent_req_callback_data(
+ req, struct smb_request);
+ struct reply_close_state *state = tevent_req_data(req,
+ struct reply_close_state);
+ NTSTATUS status;
- status = close_file(smbreq, state->fsp, NORMAL_CLOSE);
+ status = reply_close_recv(req);
+ TALLOC_FREE(req);
+ if (!NT_STATUS_IS_OK(status)) {
+ TALLOC_FREE(smb1req);
+ exit_server(__location__ ": reply_close_recv failed");
+ return;
+ }
+
+ status = close_file(smb1req, state->fsp, NORMAL_CLOSE);
if (NT_STATUS_IS_OK(status)) {
- reply_outbuf(smbreq, 0, 0);
--
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