s3:onefs: remove all onefs related code as it not maintained anymore

See https://lists.samba.org/archive/samba-technical/2012-May/083631.html
for the discussion.

metze

Autobuild-User: Stefan Metzmacher <metze@samba.org>
Autobuild-Date: Wed May 16 11:23:05 CEST 2012 on sn-devel-104

1 files changed, 0 insertions, 593 deletions

diff --git a/source3/modules/onefs_cbrl.c b/source3/modules/onefs_cbrl.c
deleted file mode 100644
index 2f20d04ddb..0000000000
--- a/source3/modules/onefs_cbrl.c
+++ /dev/null
@@ -1,593 +0,0 @@
-/*
- * Unix SMB/CIFS implementation.
- * Support for OneFS system interfaces.
- *
- * Copyright (C) Zack Kirsch, 2009
- *
- * 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 "includes.h"
-#include "smbd/smbd.h"
-#include "onefs.h"
-
-#include <ifs/ifs_syscalls.h>
-#include <sys/isi_cifs_brl.h>
-#include <isi_ecs/isi_ecs_cbrl.h>
-
-#undef DBGC_CLASS
-#define DBGC_CLASS DBGC_LOCKING
-
-static uint64_t onefs_get_new_id(void) {
-	static uint64_t id = 0;
-
-	id++;
-
-	return id;
-}
-
-enum onefs_cbrl_lock_state {ONEFS_CBRL_NONE, ONEFS_CBRL_ASYNC, ONEFS_CBRL_DONE,
-	ONEFS_CBRL_ERROR};
-
-struct onefs_cbrl_blr_state {
-	uint64_t id;
-	enum onefs_cbrl_lock_state state;
-};
-
-static char *onefs_cbrl_blr_state_str(const struct blocking_lock_record *blr)
-{
-	static fstring result;
-	struct onefs_cbrl_blr_state *bs;
-
-	SMB_ASSERT(blr);
-
-	bs = (struct onefs_cbrl_blr_state *)blr->blr_private;
-
-	if (bs == NULL) {
-		fstrcpy(result, "NULL CBRL BLR state - Posix lock?");
-		return result;
-	}
-
-	switch (bs->state) {
-	case ONEFS_CBRL_NONE:
-		fstr_sprintf(result, "CBRL BLR id=%llu: state=NONE", bs->id);
-		break;
-	case ONEFS_CBRL_ASYNC:
-		fstr_sprintf(result, "CBRL BLR id=%llu: state=ASYNC", bs->id);
-		break;
-	case ONEFS_CBRL_DONE:
-		fstr_sprintf(result, "CBRL BLR id=%llu: state=DONE", bs->id);
-		break;
-	case ONEFS_CBRL_ERROR:
-		fstr_sprintf(result, "CBRL BLR id=%llu: state=ERROR", bs->id);
-		break;
-	default:
-		fstr_sprintf(result, "CBRL BLR id=%llu: unknown state %d",
-		    bs->id, bs->state);
-		break;
-	}
-
-	return result;
-}
-
-static void onefs_cbrl_enumerate_blq(const char *fn)
-{
-	struct smbd_server_connection *sconn = smbd_server_conn;
-	struct blocking_lock_record *blr;
-
-	if (DEBUGLVL(10))
-		return;
-
-	DEBUG(10, ("CBRL BLR records (%s):\n", fn));
-
-	if (sconn->using_smb2) {
-		struct smbd_smb2_request *smb2req;
-		for (smb2req = sconn->smb2.requests; smb2req; smb2req = nextreq) {
-			blr = get_pending_smb2req_blr(smb2req);
-			if (blr) {
-				DEBUGADD(10, ("%s\n", onefs_cbrl_blr_state_str(blr)));
-			}
-		}
-	} else {
-		for (blr = sconn->smb1.locks.blocking_lock_queue; blr; blr = blr->next)
-			DEBUGADD(10, ("%s\n", onefs_cbrl_blr_state_str(blr)));
-	}
-}
-
-static struct blocking_lock_record *onefs_cbrl_find_blr(uint64_t id)
-{
-	struct smbd_server_connection *sconn = smbd_server_conn;
-	struct blocking_lock_record *blr;
-	struct onefs_cbrl_blr_state *bs;
-
-	onefs_cbrl_enumerate_blq("onefs_cbrl_find_blr");
-
-	if (sconn->using_smb2) {
-		struct smbd_smb2_request *smb2req;
-		for (smb2req = sconn->smb2.requests; smb2req; smb2req = nextreq) {
-			blr = get_pending_smb2req_blr(smb2req);
-			if (!blr) {
-				continue;
-			}
-			bs = (struct onefs_cbrl_blr_state *)blr->blr_private;
-			if (bs == NULL)	{
-				continue;
-			}
-			if (bs->id == id) {
-				DEBUG(10, ("found %s\n",
-				    onefs_cbrl_blr_state_str(blr)));
-				break;
-			}
-		}
-	} else {
-		for (blr = sconn->smb1.locks.blocking_lock_queue; blr; blr = blr->next) {
-			bs = (struct onefs_cbrl_blr_state *)blr->blr_private;
-
-			/* We don't control all of the BLRs on the BLQ. */
-			if (bs == NULL)
-				continue;
-
-			if (bs->id == id) {
-				DEBUG(10, ("found %s\n",
-				    onefs_cbrl_blr_state_str(blr)));
-				break;
-			}
-		}
-	}
-
-	if (blr == NULL) {
-		DEBUG(5, ("Could not find CBRL BLR for id %llu\n", id));
-		return NULL;
-	}
-
-	return blr;
-}
-
-static void onefs_cbrl_async_success(uint64_t id)
-{
-	struct blocking_lock_record *blr;
-	struct onefs_cbrl_blr_state *bs;
-	uint16 num_locks;
-
-	DEBUG(10, ("CBRL async success!\n"));
-
-	/* Find BLR with id. Its okay not to find one (race with cancel) */
-	blr = onefs_cbrl_find_blr(id);
-	if (blr == NULL)
-		return;
-
-	bs = (struct onefs_cbrl_blr_state *)blr->blr_private;
-	SMB_ASSERT(bs);
-	SMB_ASSERT(bs->state == ONEFS_CBRL_ASYNC);
-
-	blr->lock_num++;
-
-	num_locks = SVAL(blr->req->vwv+7, 0);
-
-	if (blr->lock_num == num_locks)
-		bs->state = ONEFS_CBRL_DONE;
-	else
-		bs->state = ONEFS_CBRL_NONE;
-
-	/* Self contend our own level 2 oplock. The kernel handles
-	 * contention of other opener's level 2 oplocks. */
-	contend_level2_oplocks_begin(blr->fsp,
-	    LEVEL2_CONTEND_WINDOWS_BRL);
-
-	/* Process the queue, to try the next lock or finish up. */
-	process_blocking_lock_queue(smbd_server_conn);
-}
-
-static void onefs_cbrl_async_failure(uint64_t id)
-{
-	struct blocking_lock_record *blr;
-	struct onefs_cbrl_blr_state *bs;
-
-	DEBUG(10, ("CBRL async failure!\n"));
-
-	/* Find BLR with id. Its okay not to find one (race with cancel) */
-	blr = onefs_cbrl_find_blr(id);
-	if (blr == NULL)
-		return;
-
-	bs = (struct onefs_cbrl_blr_state *)blr->blr_private;
-	SMB_ASSERT(bs);
-
-	SMB_ASSERT(bs->state == ONEFS_CBRL_ASYNC);
-	bs->state = ONEFS_CBRL_ERROR;
-
-	/* Process the queue. It will end up trying to retake the same lock,
-	 * see the error in onefs_cbrl_lock_windows() and fail. */
-	process_blocking_lock_queue(smbd_server_conn);
-}
-
-static struct cbrl_event_ops cbrl_ops =
-    {.cbrl_async_success = onefs_cbrl_async_success,
-     .cbrl_async_failure = onefs_cbrl_async_failure};
- 
-static void onefs_cbrl_events_handler(struct event_context *ev,
-					struct fd_event *fde,
-					uint16_t flags,
-					void *private_data)
-{
-	DEBUG(10, ("onefs_cbrl_events_handler\n"));
-
-	if (cbrl_event_dispatcher(&cbrl_ops)) {
-		DEBUG(0, ("cbrl_event_dispatcher failed: %s\n",
-			strerror(errno)));
-	}
-}
-
-static void onefs_init_cbrl(void)
-{
-	static bool init_done = false;
-	static int cbrl_event_fd;
-	static struct fd_event *cbrl_fde;
-
-	if (init_done)
-		return;
-
-	DEBUG(10, ("onefs_init_cbrl\n"));
-
-	/* Register the event channel for CBRL. */
-	cbrl_event_fd = cbrl_event_register();
-	if (cbrl_event_fd == -1) {
-		DEBUG(0, ("cbrl_event_register failed: %s\n",
-			strerror(errno)));
-		return;
-	}
-
-	DEBUG(10, ("cbrl_event_fd = %d\n", cbrl_event_fd));
-
-	/* Register the CBRL event_fd with samba's event system */
-	cbrl_fde = event_add_fd(server_event_context(),
-				     NULL,
-				     cbrl_event_fd,
-				     EVENT_FD_READ,
-				     onefs_cbrl_events_handler,
-				     NULL);
-
-	init_done = true;
-	return;
-}
-
-/**
- * Blocking PID. As far as I can tell, the blocking_pid is only used to tell
- * whether a posix lock or a CIFS lock blocked us. If it was a posix lock,
- * Samba polls every 10 seconds, which we don't want. -zkirsch
- */
-#define ONEFS_BLOCKING_PID 0xABCDABCD
-
-/**
- * @param[in]     br_lck        Contains the fsp.
- * @param[in]     plock         Lock request.
- * @param[in]     blocking_lock Only used for figuring out the error.
- * @param[in,out] blr           The BLR for the already-deferred operation.
- */
-NTSTATUS onefs_brl_lock_windows(vfs_handle_struct *handle,
-				struct byte_range_lock *br_lck,
-				struct lock_struct *plock,
-				bool blocking_lock,
-				struct blocking_lock_record *blr)
-{
-	int fd = br_lck->fsp->fh->fd;
-	uint64_t id = 0;
-	enum cbrl_lock_type type;
-	bool async = false;
-	bool pending = false;
-	bool pending_async = false;
-	int error;
-	struct onefs_cbrl_blr_state *bs;
-	NTSTATUS status;
-
-	START_PROFILE(syscall_brl_lock);
-
-	SMB_ASSERT(plock->lock_flav == WINDOWS_LOCK);
-	SMB_ASSERT(plock->lock_type != UNLOCK_LOCK);
-
-	onefs_cbrl_enumerate_blq("onefs_brl_lock_windows");
-
-	/* Will only initialize the first time its called. */
-	onefs_init_cbrl();
-
-	switch (plock->lock_type) {
-		case WRITE_LOCK:
-			type = CBRL_LK_EX;
-			break;
-		case READ_LOCK:
-			type = CBRL_LK_SH;
-			break;
-		case PENDING_WRITE_LOCK:
-			/* Called when a blocking lock request is added - do an
-			 * async lock. */
-			type = CBRL_LK_EX;
-			pending = true;
-			async = true;
-			break;
-		case PENDING_READ_LOCK:
-			/* Called when a blocking lock request is added - do an
-			 * async lock. */
-			type = CBRL_LK_SH;
-			pending = true;
-			async = true;
-			break;
-		default:
-			/* UNLOCK_LOCK: should only be used for a POSIX_LOCK */
-			smb_panic("Invalid plock->lock_type passed in to "
-			    "onefs_brl_lock_windows");
-	}
-
-	/* Figure out if we're actually doing the lock or a no-op. We need to
-	 * do a no-op when process_blocking_lock_queue calls back into us.
-	 *
-	 * We know process_* is calling into us if a blr is passed in and
-	 * pending is false. */
-	if (!pending && blr) {
-		/* Check the BLR state. */
-		bs = (struct onefs_cbrl_blr_state *)blr->blr_private;
-		SMB_ASSERT(bs);
-
-		/* ASYNC still in progress: The process_* calls will keep
-		 * calling even if we haven't gotten the lock. Keep erroring
-		 * without calling ifs_cbrl, or getting/setting an id. */
-		if (bs->state == ONEFS_CBRL_ASYNC) {
-			goto failure;
-		}
-		else if (bs->state == ONEFS_CBRL_ERROR) {
-			END_PROFILE(syscall_brl_lock);
-			return NT_STATUS_NO_MEMORY;
-		}
-
-		SMB_ASSERT(bs->state == ONEFS_CBRL_NONE);
-		async = true;
-	}
-
-	if (async) {
-		SMB_ASSERT(blocking_lock);
-		SMB_ASSERT(blr);
-		id = onefs_get_new_id();
-	}
-
-	DEBUG(10, ("Calling ifs_cbrl(LOCK)...\n"));
-	error = ifs_cbrl(fd, CBRL_OP_LOCK, type, plock->start,
-	    plock->size, async, id, plock->context.smbpid, plock->context.tid,
-	    plock->fnum);
-	if (!error) {
-		goto success;
-	} else if (errno == EWOULDBLOCK) {
-		SMB_ASSERT(!async);
-	} else if (errno == EINPROGRESS) {
-		SMB_ASSERT(async);
-
-		if (pending) {
-			/* Talloc a new BLR private state. */
-			blr->blr_private = talloc(blr, struct onefs_cbrl_blr_state);
-			pending_async = true;
-		}
-
-		/* Store the new id in the BLR private state. */
-		bs = (struct onefs_cbrl_blr_state *)blr->blr_private;
-		bs->id = id;
-		bs->state = ONEFS_CBRL_ASYNC;
-	} else {
-		DEBUG(0, ("onefs_brl_lock_windows failure: error=%d (%s).\n",
-			errno, strerror(errno)));
-	}
-
-failure:
-
-	END_PROFILE(syscall_brl_lock);
-
-	/* Failure - error or async. */
-	plock->context.smbpid = (uint32) ONEFS_BLOCKING_PID;
-
-	if (pending_async)
-		status = NT_STATUS_OK;
-	else
-		status = brl_lock_failed(br_lck->fsp, plock, blocking_lock);
-
-	DEBUG(10, ("returning %s.\n", nt_errstr(status)));
-	return status;
-
-success:
-	/* Self contend our own level 2 oplock. The kernel handles
-	 * contention of other opener's level 2 oplocks. */
-	contend_level2_oplocks_begin(br_lck->fsp,
-	    LEVEL2_CONTEND_WINDOWS_BRL);
-
-	END_PROFILE(syscall_brl_lock);
-
-	/* Success. */
-	onefs_cbrl_enumerate_blq("onefs_brl_unlock_windows");
-	DEBUG(10, ("returning NT_STATUS_OK.\n"));
-	return NT_STATUS_OK;
-}
-
-bool onefs_brl_unlock_windows(vfs_handle_struct *handle,
-			      struct messaging_context *msg_ctx,
-			      struct byte_range_lock *br_lck,
-			      const struct lock_struct *plock)
-{
-	int error;
-	int fd = br_lck->fsp->fh->fd;
-
-	START_PROFILE(syscall_brl_unlock);
-
-	SMB_ASSERT(plock->lock_flav == WINDOWS_LOCK);
-	SMB_ASSERT(plock->lock_type == UNLOCK_LOCK);
-
-	DEBUG(10, ("Calling ifs_cbrl(UNLOCK)...\n"));
-	error = ifs_cbrl(fd, CBRL_OP_UNLOCK, CBRL_LK_SH,
-	    plock->start, plock->size, false, 0, plock->context.smbpid,
-	    plock->context.tid, plock->fnum);
-
-	END_PROFILE(syscall_brl_unlock);
-
-	if (error) {
-		DEBUG(10, ("returning false.\n"));
-		return false;
-	}
-
-	/* For symmetry purposes, end our oplock contention even though its
-	 * currently a no-op. */
-	contend_level2_oplocks_end(br_lck->fsp, LEVEL2_CONTEND_WINDOWS_BRL);
-
-	DEBUG(10, ("returning true.\n"));
-	return true;
-
-	/* Problem with storing things in TDB: I won't know what BRL to unlock in the TDB.
-	 *  - I could fake it?
-	 *  - I could send Samba a message with which lock is being unlocked?
-	 *  - I could *easily* make the "id" something you always pass in to
-	 *  lock, unlock or cancel -- it identifies a lock. Makes sense!
-	 */
-}
-
-/* Default implementation only calls this on PENDING locks. */
-bool onefs_brl_cancel_windows(vfs_handle_struct *handle,
-			      struct byte_range_lock *br_lck,
-			      struct lock_struct *plock,
-			      struct blocking_lock_record *blr)
-{
-	int error;
-	int fd = br_lck->fsp->fh->fd;
-	struct onefs_cbrl_blr_state *bs;
-
-	START_PROFILE(syscall_brl_cancel);
-
-	SMB_ASSERT(plock);
-	SMB_ASSERT(plock->lock_flav == WINDOWS_LOCK);
-	SMB_ASSERT(blr);
-
-	onefs_cbrl_enumerate_blq("onefs_brl_cancel_windows");
-
-	bs = ((struct onefs_cbrl_blr_state *)blr->blr_private);
-	SMB_ASSERT(bs);
-
-	if (bs->state == ONEFS_CBRL_DONE || bs->state == ONEFS_CBRL_ERROR) {
-		/* No-op. */
-		DEBUG(10, ("State=%d, returning true\n", bs->state));
-		END_PROFILE(syscall_brl_cancel);
-		return true;
-	}
-
-	SMB_ASSERT(bs->state == ONEFS_CBRL_NONE ||
-	    bs->state == ONEFS_CBRL_ASYNC);
-
-	/* A real cancel. */
-	DEBUG(10, ("Calling ifs_cbrl(CANCEL)...\n"));
-	error = ifs_cbrl(fd, CBRL_OP_CANCEL, CBRL_LK_UNSPEC, plock->start,
-	    plock->size, false, bs->id, plock->context.smbpid,
-	    plock->context.tid, plock->fnum);
-
-	END_PROFILE(syscall_brl_cancel);
-
-	if (error) {
-		DEBUG(10, ("returning false\n"));
-		bs->state = ONEFS_CBRL_ERROR;
-		return false;
-	}
-
-	bs->state = ONEFS_CBRL_DONE;
-	onefs_cbrl_enumerate_blq("onefs_brl_cancel_windows");
-	DEBUG(10, ("returning true\n"));
-	return true;
-}
-
-bool onefs_strict_lock(vfs_handle_struct *handle,
-			files_struct *fsp,
-			struct lock_struct *plock)
-{
-	int error;
-
-	START_PROFILE(syscall_strict_lock);
-
-	SMB_ASSERT(plock->lock_type == READ_LOCK ||
-	    plock->lock_type == WRITE_LOCK);
-
-        if (!lp_locking(handle->conn->params) ||
-	    !lp_strict_locking(handle->conn->params)) {
-		END_PROFILE(syscall_strict_lock);
-                return True;
-        }
-
-	if (plock->lock_flav == POSIX_LOCK) {
-		END_PROFILE(syscall_strict_lock);
-		return SMB_VFS_NEXT_STRICT_LOCK(handle, fsp, plock);
-	}
-
-	if (plock->size == 0) {
-		END_PROFILE(syscall_strict_lock);
-                return True;
-	}
-
-	error = ifs_cbrl(fsp->fh->fd, CBRL_OP_LOCK,
-	    plock->lock_type == READ_LOCK ? CBRL_LK_RD : CBRL_LK_WR,
-	    plock->start, plock->size, 0, 0, plock->context.smbpid,
-	    plock->context.tid, plock->fnum);
-
-	END_PROFILE(syscall_strict_lock);
-
-	return (error == 0);
-}
-
-void onefs_strict_unlock(vfs_handle_struct *handle,
-			files_struct *fsp,
-			struct lock_struct *plock)
-{
-	START_PROFILE(syscall_strict_unlock);
-
-	SMB_ASSERT(plock->lock_type == READ_LOCK ||
-	    plock->lock_type == WRITE_LOCK);
-
-        if (!lp_locking(handle->conn->params) ||
-	    !lp_strict_locking(handle->conn->params)) {
-		END_PROFILE(syscall_strict_unlock);
-		return;
-        }
-
-	if (plock->lock_flav == POSIX_LOCK) {
-		SMB_VFS_NEXT_STRICT_UNLOCK(handle, fsp, plock);
-		END_PROFILE(syscall_strict_unlock);
-		return;
-	}
-
-	if (plock->size == 0) {
-		END_PROFILE(syscall_strict_unlock);
-		return;
-	}
-
-	if (fsp->fh) {
-		ifs_cbrl(fsp->fh->fd, CBRL_OP_UNLOCK,
-		    plock->lock_type == READ_LOCK ? CBRL_LK_RD : CBRL_LK_WR,
-		    plock->start, plock->size, 0, 0, plock->context.smbpid,
-		    plock->context.tid, plock->fnum);
-	}
-
-	END_PROFILE(syscall_strict_unlock);
-}
-
-/* TODO Optimization: Abstract out brl_get_locks() in the Windows case.
- * We'll malloc some memory or whatever (can't return NULL), but not actually
- * touch the TDB. */
-
-/* XXX brl_locktest: CBRL does not support calling this, but its only for
- * strict locking. Add empty VOP? */
-
-/* XXX brl_lockquery: CBRL does not support calling this for WINDOWS LOCKS, but
- * its only called for POSIX LOCKS. Add empty VOP? */
-
-/* XXX brl_close_fnum: CBRL will do this automatically. I think this is a NO-OP
- * for us, we could add an empty VOP. */
-