X-Git-Url: http://git.samba.org/samba.git/?a=blobdiff_plain;f=source%2Fntvfs%2Fposix%2Fpvfs_open.c;h=a01352f60cff54cf5064e5d9d850d85e799b5edf;hb=d96fcc52a70fd1236b767b1d88a39d78c4e8c48c;hp=3a8b17ab16ddb371a50688d3a29618c024cda4d7;hpb=35f7f488d84e3ec3224f3b40ff5881e91c11764d;p=kai%2Fsamba.git diff --git a/source/ntvfs/posix/pvfs_open.c b/source/ntvfs/posix/pvfs_open.c index 3a8b17ab16d..a01352f60cf 100644 --- a/source/ntvfs/posix/pvfs_open.c +++ b/source/ntvfs/posix/pvfs_open.c @@ -268,6 +268,7 @@ static NTSTATUS pvfs_open_directory(struct pvfs_state *pvfs, f->handle->seek_offset = 0; f->handle->position = 0; f->handle->mode = 0; + f->handle->oplock = NULL; f->handle->sticky_write_time = false; f->handle->open_completed = false; @@ -296,9 +297,10 @@ static NTSTATUS pvfs_open_directory(struct pvfs_state *pvfs, } /* see if we are allowed to open at the same time as existing opens */ - status = odb_open_file(lck, f->handle, f->handle->name->stream_id, + status = odb_open_file(lck, f->handle, name->full_name, name->stream_id, share_access, access_mask, del_on_close, - name->full_name, OPLOCK_NONE, NULL); + io->generic.in.open_disposition, + false, OPLOCK_NONE, NULL); if (!NT_STATUS_IS_OK(status)) { talloc_free(lck); @@ -349,9 +351,10 @@ static NTSTATUS pvfs_open_directory(struct pvfs_state *pvfs, return NT_STATUS_INTERNAL_DB_CORRUPTION; } - status = odb_open_file(lck, f->handle, f->handle->name->stream_id, + status = odb_open_file(lck, f->handle, name->full_name, name->stream_id, share_access, access_mask, del_on_close, - name->full_name, OPLOCK_NONE, NULL); + io->generic.in.open_disposition, + false, OPLOCK_NONE, NULL); if (!NT_STATUS_IS_OK(status)) { goto cleanup_delete; @@ -669,9 +672,10 @@ static NTSTATUS pvfs_create_file(struct pvfs_state *pvfs, oplock_level = OPLOCK_EXCLUSIVE; } - status = odb_open_file(lck, f->handle, name->stream_id, + status = odb_open_file(lck, f->handle, name->full_name, name->stream_id, share_access, access_mask, del_on_close, - name->full_name, oplock_level, &oplock_granted); + io->generic.in.open_disposition, + false, oplock_level, &oplock_granted); talloc_free(lck); if (!NT_STATUS_IS_OK(status)) { /* bad news, we must have hit a race - we don't delete the file @@ -681,9 +685,6 @@ static NTSTATUS pvfs_create_file(struct pvfs_state *pvfs, return status; } - if (pvfs->flags & PVFS_FLAG_FAKE_OPLOCKS) { - oplock_granted = OPLOCK_BATCH; - } f->ntvfs = h; f->pvfs = pvfs; @@ -702,12 +703,23 @@ static NTSTATUS pvfs_create_file(struct pvfs_state *pvfs, f->handle->seek_offset = 0; f->handle->position = 0; f->handle->mode = 0; + f->handle->oplock = NULL; f->handle->have_opendb_entry = true; f->handle->sticky_write_time = false; f->handle->open_completed = false; DLIST_ADD(pvfs->files.list, f); + if (pvfs->flags & PVFS_FLAG_FAKE_OPLOCKS) { + oplock_granted = OPLOCK_BATCH; + } else if (oplock_granted != OPLOCK_NONE) { + status = pvfs_setup_oplock(f, oplock_granted); + if (!NT_STATUS_IS_OK(status)) { + talloc_free(lck); + return status; + } + } + /* setup a destructor to avoid file descriptor leaks on abnormal termination */ talloc_set_destructor(f, pvfs_fnum_destructor); @@ -748,20 +760,25 @@ cleanup_delete: return status; } - /* - state of a pending open retry + state of a pending retry */ -struct pvfs_open_retry { +struct pvfs_odb_retry { struct ntvfs_module_context *ntvfs; struct ntvfs_request *req; - union smb_open *io; - struct pvfs_wait *wait_handle; DATA_BLOB odb_locking_key; + void *io; + void *private_data; + void (*callback)(struct pvfs_odb_retry *r, + struct ntvfs_module_context *ntvfs, + struct ntvfs_request *req, + void *io, + void *private_data, + enum pvfs_wait_notice reason); }; -/* destroy a pending open request */ -static int pvfs_retry_destructor(struct pvfs_open_retry *r) +/* destroy a pending request */ +static int pvfs_odb_retry_destructor(struct pvfs_odb_retry *r) { struct pvfs_state *pvfs = r->ntvfs->private_data; if (r->odb_locking_key.data) { @@ -775,15 +792,92 @@ static int pvfs_retry_destructor(struct pvfs_open_retry *r) return 0; } +static void pvfs_odb_retry_callback(void *_r, enum pvfs_wait_notice reason) +{ + struct pvfs_odb_retry *r = talloc_get_type(_r, struct pvfs_odb_retry); + + if (reason == PVFS_WAIT_EVENT) { + /* + * The pending odb entry is already removed. + * We use a null locking key to indicate this + * to the destructor. + */ + data_blob_free(&r->odb_locking_key); + } + + r->callback(r, r->ntvfs, r->req, r->io, r->private_data, reason); +} + /* - retry an open + setup for a retry of a request that was rejected + by odb_open_file() or odb_can_open() */ -static void pvfs_open_retry(void *private, enum pvfs_wait_notice reason) +NTSTATUS pvfs_odb_retry_setup(struct ntvfs_module_context *ntvfs, + struct ntvfs_request *req, + struct odb_lock *lck, + struct timeval end_time, + void *io, + void *private_data, + void (*callback)(struct pvfs_odb_retry *r, + struct ntvfs_module_context *ntvfs, + struct ntvfs_request *req, + void *io, + void *private_data, + enum pvfs_wait_notice reason)) { - struct pvfs_open_retry *r = private; - struct ntvfs_module_context *ntvfs = r->ntvfs; - struct ntvfs_request *req = r->req; - union smb_open *io = r->io; + struct pvfs_state *pvfs = ntvfs->private_data; + struct pvfs_odb_retry *r; + struct pvfs_wait *wait_handle; + NTSTATUS status; + + r = talloc(req, struct pvfs_odb_retry); + NT_STATUS_HAVE_NO_MEMORY(r); + + r->ntvfs = ntvfs; + r->req = req; + r->io = io; + r->private_data = private_data; + r->callback = callback; + r->odb_locking_key = odb_get_key(r, lck); + if (r->odb_locking_key.data == NULL) { + return NT_STATUS_NO_MEMORY; + } + + /* setup a pending lock */ + status = odb_open_file_pending(lck, r); + if (!NT_STATUS_IS_OK(status)) { + return status; + } + + talloc_free(lck); + + talloc_set_destructor(r, pvfs_odb_retry_destructor); + + wait_handle = pvfs_wait_message(pvfs, req, + MSG_PVFS_RETRY_OPEN, end_time, + pvfs_odb_retry_callback, r); + if (wait_handle == NULL) { + return NT_STATUS_NO_MEMORY; + } + + talloc_steal(r, wait_handle); + + talloc_steal(pvfs, r); + + return NT_STATUS_OK; +} + +/* + retry an open after a sharing violation +*/ +static void pvfs_retry_open_sharing(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_open *io = talloc_get_type(_io, union smb_open); NTSTATUS status; /* w2k3 ignores SMBntcancel for outstanding open requests. It's probably @@ -792,8 +886,6 @@ static void pvfs_open_retry(void *private, enum pvfs_wait_notice reason) return; } - talloc_free(r->wait_handle); - if (reason == PVFS_WAIT_TIMEOUT) { /* if it timed out, then give the failure immediately */ @@ -803,9 +895,6 @@ static void pvfs_open_retry(void *private, enum pvfs_wait_notice reason) return; } - /* the pending odb entry is already removed. We use a null locking - key to indicate this */ - data_blob_free(&r->odb_locking_key); talloc_free(r); /* try the open again, which could trigger another retry setup @@ -919,10 +1008,10 @@ static NTSTATUS pvfs_open_setup_retry(struct ntvfs_module_context *ntvfs, struct ntvfs_request *req, union smb_open *io, struct pvfs_file *f, - struct odb_lock *lck) + struct odb_lock *lck, + NTSTATUS parent_status) { struct pvfs_state *pvfs = ntvfs->private_data; - struct pvfs_open_retry *r; NTSTATUS status; struct timeval end_time; @@ -936,40 +1025,21 @@ static NTSTATUS pvfs_open_setup_retry(struct ntvfs_module_context *ntvfs, } } - r = talloc(req, struct pvfs_open_retry); - if (r == NULL) { - return NT_STATUS_NO_MEMORY; - } - - r->ntvfs = ntvfs; - r->req = req; - r->io = io; - r->odb_locking_key = data_blob_talloc(r, - f->handle->odb_locking_key.data, - f->handle->odb_locking_key.length); - - end_time = timeval_add(&req->statistics.request_time, 0, pvfs->sharing_violation_delay); - - /* setup a pending lock */ - status = odb_open_file_pending(lck, r); - if (!NT_STATUS_IS_OK(status)) { - return status; - } - - talloc_free(lck); + /* the retry should allocate a new file handle */ talloc_free(f); - talloc_set_destructor(r, pvfs_retry_destructor); - - r->wait_handle = pvfs_wait_message(pvfs, req, MSG_PVFS_RETRY_OPEN, end_time, - pvfs_open_retry, r); - if (r->wait_handle == NULL) { - return NT_STATUS_NO_MEMORY; + if (NT_STATUS_EQUAL(parent_status, NT_STATUS_SHARING_VIOLATION)) { + end_time = timeval_add(&req->statistics.request_time, + 0, pvfs->sharing_violation_delay); + } else if (NT_STATUS_EQUAL(parent_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; } - talloc_steal(pvfs, r); - - return NT_STATUS_OK; + return pvfs_odb_retry_setup(ntvfs, req, lck, end_time, io, NULL, + pvfs_retry_open_sharing); } /* @@ -1133,6 +1203,7 @@ NTSTATUS pvfs_open(struct ntvfs_module_context *ntvfs, f->handle->seek_offset = 0; f->handle->position = 0; f->handle->mode = 0; + f->handle->oplock = NULL; f->handle->have_opendb_entry = false; f->handle->sticky_write_time = false; f->handle->open_completed = false; @@ -1186,15 +1257,21 @@ NTSTATUS pvfs_open(struct ntvfs_module_context *ntvfs, } /* see if we are allowed to open at the same time as existing opens */ - status = odb_open_file(lck, f->handle, f->handle->name->stream_id, + status = odb_open_file(lck, f->handle, name->full_name, name->stream_id, share_access, access_mask, del_on_close, - name->full_name, oplock_level, &oplock_granted); + io->generic.in.open_disposition, + false, oplock_level, &oplock_granted); - /* on a sharing violation we need to retry when the file is closed by - the other user, or after 1 second */ - if (NT_STATUS_EQUAL(status, NT_STATUS_SHARING_VIOLATION) && + /* + * 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_open_setup_retry(ntvfs, req, io, f, lck); + return pvfs_open_setup_retry(ntvfs, req, io, f, lck, status); } if (!NT_STATUS_IS_OK(status)) { @@ -1204,6 +1281,12 @@ NTSTATUS pvfs_open(struct ntvfs_module_context *ntvfs, if (pvfs->flags & PVFS_FLAG_FAKE_OPLOCKS) { oplock_granted = OPLOCK_BATCH; + } else if (oplock_granted != OPLOCK_NONE) { + status = pvfs_setup_oplock(f, oplock_granted); + if (!NT_STATUS_IS_OK(status)) { + talloc_free(lck); + return status; + } } f->handle->have_opendb_entry = true; @@ -1424,6 +1507,9 @@ NTSTATUS pvfs_can_delete(struct pvfs_state *pvfs, NTSTATUS status; DATA_BLOB key; struct odb_lock *lck; + uint32_t share_access; + uint32_t access_mask; + bool delete_on_close; status = pvfs_locking_key(name, name, &key); if (!NT_STATUS_IS_OK(status)) { @@ -1436,15 +1522,18 @@ NTSTATUS pvfs_can_delete(struct pvfs_state *pvfs, return NT_STATUS_INTERNAL_DB_CORRUPTION; } - status = odb_can_open(lck, - NTCREATEX_SHARE_ACCESS_READ | - NTCREATEX_SHARE_ACCESS_WRITE | - NTCREATEX_SHARE_ACCESS_DELETE, - NTCREATEX_OPTIONS_DELETE_ON_CLOSE, - SEC_STD_DELETE); + share_access = NTCREATEX_SHARE_ACCESS_READ | + NTCREATEX_SHARE_ACCESS_WRITE | + NTCREATEX_SHARE_ACCESS_DELETE; + access_mask = SEC_STD_DELETE; + delete_on_close = true; + + status = odb_can_open(lck, name->stream_id, + share_access, access_mask, delete_on_close, + NTCREATEX_DISP_OPEN, false); if (NT_STATUS_IS_OK(status)) { - status = pvfs_access_check_simple(pvfs, req, name, SEC_STD_DELETE); + status = pvfs_access_check_simple(pvfs, req, name, access_mask); } /* @@ -1483,6 +1572,70 @@ NTSTATUS pvfs_can_rename(struct pvfs_state *pvfs, NTSTATUS status; DATA_BLOB key; struct odb_lock *lck; + uint32_t share_access; + uint32_t access_mask; + bool delete_on_close; + + status = pvfs_locking_key(name, name, &key); + if (!NT_STATUS_IS_OK(status)) { + return NT_STATUS_NO_MEMORY; + } + + lck = odb_lock(req, pvfs->odb_context, &key); + if (lck == NULL) { + DEBUG(0,("Unable to lock opendb for can_stat\n")); + return NT_STATUS_INTERNAL_DB_CORRUPTION; + } + + share_access = NTCREATEX_SHARE_ACCESS_READ | + NTCREATEX_SHARE_ACCESS_WRITE; + access_mask = SEC_STD_DELETE; + delete_on_close = false; + + status = odb_can_open(lck, name->stream_id, + share_access, access_mask, delete_on_close, + NTCREATEX_DISP_OPEN, false); + + /* + * if it's a sharing violation or we got no oplock + * only keep the lock if the caller requested access + * to the lock + */ + if (NT_STATUS_EQUAL(status, NT_STATUS_SHARING_VIOLATION) || + NT_STATUS_EQUAL(status, NT_STATUS_OPLOCK_NOT_GRANTED)) { + if (lckp) { + *lckp = lck; + } else { + talloc_free(lck); + } + } else if (!NT_STATUS_IS_OK(status)) { + talloc_free(lck); + if (lckp) { + *lckp = NULL; + } + } else if (lckp) { + *lckp = lck; + } + + return status; +} + +/* + determine if the file size of a file can be changed, + or if it is prevented by an already open file +*/ +NTSTATUS pvfs_can_update_file_size(struct pvfs_state *pvfs, + struct ntvfs_request *req, + struct pvfs_filename *name, + struct odb_lock **lckp) +{ + NTSTATUS status; + DATA_BLOB key; + struct odb_lock *lck; + uint32_t share_access; + uint32_t access_mask; + bool break_to_none; + bool delete_on_close; status = pvfs_locking_key(name, name, &key); if (!NT_STATUS_IS_OK(status)) { @@ -1495,11 +1648,25 @@ NTSTATUS pvfs_can_rename(struct pvfs_state *pvfs, return NT_STATUS_INTERNAL_DB_CORRUPTION; } - status = odb_can_open(lck, - NTCREATEX_SHARE_ACCESS_READ | - NTCREATEX_SHARE_ACCESS_WRITE, - 0, - SEC_STD_DELETE); + share_access = NTCREATEX_SHARE_ACCESS_READ | + NTCREATEX_SHARE_ACCESS_WRITE | + NTCREATEX_SHARE_ACCESS_DELETE; + /* + * I would have thought that we would need to pass + * SEC_FILE_WRITE_DATA | SEC_FILE_APPEND_DATA here too + * + * But you only need SEC_FILE_WRITE_ATTRIBUTE permissions + * to set the filesize. + * + * --metze + */ + access_mask = SEC_FILE_WRITE_ATTRIBUTE; + delete_on_close = false; + break_to_none = true; + + status = odb_can_open(lck, name->stream_id, + share_access, access_mask, delete_on_close, + NTCREATEX_DISP_OPEN, break_to_none); /* * if it's a sharing violation or we got no oplock @@ -1536,6 +1703,9 @@ NTSTATUS pvfs_can_stat(struct pvfs_state *pvfs, NTSTATUS status; DATA_BLOB key; struct odb_lock *lck; + uint32_t share_access; + uint32_t access_mask; + bool delete_on_close; status = pvfs_locking_key(name, name, &key); if (!NT_STATUS_IS_OK(status)) { @@ -1548,10 +1718,14 @@ NTSTATUS pvfs_can_stat(struct pvfs_state *pvfs, return NT_STATUS_INTERNAL_DB_CORRUPTION; } - status = odb_can_open(lck, - NTCREATEX_SHARE_ACCESS_READ | - NTCREATEX_SHARE_ACCESS_WRITE, - 0, 0); + share_access = NTCREATEX_SHARE_ACCESS_READ | + NTCREATEX_SHARE_ACCESS_WRITE; + access_mask = SEC_FILE_READ_ATTRIBUTE; + delete_on_close = false; + + status = odb_can_open(lck, name->stream_id, + share_access, access_mask, delete_on_close, + NTCREATEX_DISP_OPEN, false); if (!NT_STATUS_IS_OK(status)) { talloc_free(lck);