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authorStefan Metzmacher <metze@samba.org>2008-02-27 11:24:37 +0100
committerStefan Metzmacher <metze@samba.org>2008-02-27 16:33:14 +0100
commiteefaf470bfad4a4233990de6ba44cd4db233ab17 (patch)
treea02a7c817956c8b68c30eb5c12be0b02830de6c7 /source4/ntvfs
parent32061705cffc98753975952f67aaa2a43e3eafb8 (diff)
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pvfs_rename: add retry logic after sharing violation or non granted oplock
metze (This used to be commit 79e42a5dfbfd59b856bca16456295cd2c93ab0ca)
Diffstat (limited to 'source4/ntvfs')
-rw-r--r--source4/ntvfs/posix/pvfs_rename.c105
1 files changed, 103 insertions, 2 deletions
diff --git a/source4/ntvfs/posix/pvfs_rename.c b/source4/ntvfs/posix/pvfs_rename.c
index 5693e79314..e3192370cc 100644
--- a/source4/ntvfs/posix/pvfs_rename.c
+++ b/source4/ntvfs/posix/pvfs_rename.c
@@ -181,6 +181,84 @@ static const char *pvfs_resolve_wildcard(TALLOC_CTX *mem_ctx,
}
/*
+ retry an rename after a sharing violation
+*/
+static void pvfs_retry_rename(struct pvfs_odb_retry *r,
+ struct ntvfs_module_context *ntvfs,
+ struct ntvfs_request *req,
+ void *_io,
+ void *private_data,
+ enum pvfs_wait_notice reason)
+{
+ union smb_rename *io = talloc_get_type(_io, union smb_rename);
+ NTSTATUS status = NT_STATUS_INTERNAL_ERROR;
+
+ talloc_free(r);
+
+ switch (reason) {
+ case PVFS_WAIT_CANCEL:
+/*TODO*/
+ status = NT_STATUS_CANCELLED;
+ break;
+ case PVFS_WAIT_TIMEOUT:
+ /* if it timed out, then give the failure
+ immediately */
+/*TODO*/
+ status = NT_STATUS_SHARING_VIOLATION;
+ break;
+ case PVFS_WAIT_EVENT:
+
+ /* try the open again, which could trigger another retry setup
+ if it wants to, so we have to unmark the async flag so we
+ will know if it does a second async reply */
+ req->async_states->state &= ~NTVFS_ASYNC_STATE_ASYNC;
+
+ status = pvfs_rename(ntvfs, req, io);
+ if (req->async_states->state & NTVFS_ASYNC_STATE_ASYNC) {
+ /* the 2nd try also replied async, so we don't send
+ the reply yet */
+ return;
+ }
+
+ /* re-mark it async, just in case someone up the chain does
+ paranoid checking */
+ req->async_states->state |= NTVFS_ASYNC_STATE_ASYNC;
+ break;
+ }
+
+ /* send the reply up the chain */
+ req->async_states->status = status;
+ req->async_states->send_fn(req);
+}
+
+/*
+ setup for a rename retry after a sharing violation
+ or a non granted oplock
+*/
+static NTSTATUS pvfs_rename_setup_retry(struct ntvfs_module_context *ntvfs,
+ struct ntvfs_request *req,
+ union smb_rename *io,
+ struct odb_lock *lck,
+ NTSTATUS status)
+{
+ struct pvfs_state *pvfs = ntvfs->private_data;
+ struct timeval end_time;
+
+ if (NT_STATUS_EQUAL(status, NT_STATUS_SHARING_VIOLATION)) {
+ end_time = timeval_add(&req->statistics.request_time,
+ 0, pvfs->sharing_violation_delay);
+ } else if (NT_STATUS_EQUAL(status, NT_STATUS_OPLOCK_NOT_GRANTED)) {
+ end_time = timeval_add(&req->statistics.request_time,
+ pvfs->oplock_break_timeout, 0);
+ } else {
+ return NT_STATUS_INTERNAL_ERROR;
+ }
+
+ return pvfs_odb_retry_setup(ntvfs, req, lck, end_time, io, NULL,
+ pvfs_retry_rename);
+}
+
+/*
rename one file from a wildcard set
*/
static NTSTATUS pvfs_rename_one(struct pvfs_state *pvfs,
@@ -354,8 +432,19 @@ static NTSTATUS pvfs_rename_mv(struct ntvfs_module_context *ntvfs,
}
status = pvfs_can_rename(pvfs, req, name1, &lck);
+ /*
+ * on a sharing violation we need to retry when the file is closed by
+ * the other user, or after 1 second
+ * on a non granted oplock we need to retry when the file is closed by
+ * the other user, or after 30 seconds
+ */
+ if ((NT_STATUS_EQUAL(status, NT_STATUS_SHARING_VIOLATION) ||
+ NT_STATUS_EQUAL(status, NT_STATUS_OPLOCK_NOT_GRANTED)) &&
+ (req->async_states->state & NTVFS_ASYNC_STATE_MAY_ASYNC)) {
+ return pvfs_rename_setup_retry(pvfs->ntvfs, req, ren, lck, status);
+ }
+
if (!NT_STATUS_IS_OK(status)) {
- talloc_free(lck);
return status;
}
@@ -377,6 +466,7 @@ static NTSTATUS pvfs_rename_nt(struct ntvfs_module_context *ntvfs,
struct pvfs_state *pvfs = ntvfs->private_data;
NTSTATUS status;
struct pvfs_filename *name1, *name2;
+ struct odb_lock *lck = NULL;
switch (ren->ntrename.in.flags) {
case RENAME_FLAG_RENAME:
@@ -422,7 +512,18 @@ static NTSTATUS pvfs_rename_nt(struct ntvfs_module_context *ntvfs,
return status;
}
- status = pvfs_can_rename(pvfs, req, name1, NULL);
+ status = pvfs_can_rename(pvfs, req, name1, &lck);
+ /*
+ * on a sharing violation we need to retry when the file is closed by
+ * the other user, or after 1 second
+ * on a non granted oplock we need to retry when the file is closed by
+ * the other user, or after 30 seconds
+ */
+ if ((NT_STATUS_EQUAL(status, NT_STATUS_SHARING_VIOLATION) ||
+ NT_STATUS_EQUAL(status, NT_STATUS_OPLOCK_NOT_GRANTED)) &&
+ (req->async_states->state & NTVFS_ASYNC_STATE_MAY_ASYNC)) {
+ return pvfs_rename_setup_retry(pvfs->ntvfs, req, ren, lck, status);
+ }
if (!NT_STATUS_IS_OK(status)) {
return status;
}