/* SPDX-License-Identifier: GPL-1.0+ WITH Linux-syscall-note */ /* * 1999 Copyright (C) Pavel Machek, [email protected]. This code is GPL. * 1999/11/04 Copyright (C) 1999 VMware, Inc. (Regis "HPReg" Duchesne) * Made nbd_end_request() use the io_request_lock * 2001 Copyright (C) Steven Whitehouse * New nbd_end_request() for compatibility with new linux block * layer code. * 2003/06/24 Louis D. Langholtz <[email protected]> * Removed unneeded blksize_bits field from nbd_device struct. * Cleanup PARANOIA usage & code. * 2004/02/19 Paul Clements * Removed PARANOIA, plus various cleanup and comments * 2023 Copyright Red Hat * Link to userspace extensions, favor cookie over handle. */ #ifndef _UAPILINUX_NBD_H #define _UAPILINUX_NBD_H #include <linux/types.h> #define NBD_SET_SOCK … #define NBD_SET_BLKSIZE … #define NBD_SET_SIZE … #define NBD_DO_IT … #define NBD_CLEAR_SOCK … #define NBD_CLEAR_QUE … #define NBD_PRINT_DEBUG … #define NBD_SET_SIZE_BLOCKS … #define NBD_DISCONNECT … #define NBD_SET_TIMEOUT … #define NBD_SET_FLAGS … /* * See also https://github.com/NetworkBlockDevice/nbd/blob/master/doc/proto.md * for additional userspace extensions not yet utilized in the kernel module. */ enum { … }; /* values for flags field, these are server interaction specific. */ #define NBD_FLAG_HAS_FLAGS … #define NBD_FLAG_READ_ONLY … #define NBD_FLAG_SEND_FLUSH … #define NBD_FLAG_SEND_FUA … /* there is a gap here to match userspace */ #define NBD_FLAG_SEND_TRIM … #define NBD_FLAG_CAN_MULTI_CONN … /* values for cmd flags in the upper 16 bits of request type */ #define NBD_CMD_FLAG_FUA … /* These are client behavior specific flags. */ #define NBD_CFLAG_DESTROY_ON_DISCONNECT … #define NBD_CFLAG_DISCONNECT_ON_CLOSE … /* userspace doesn't need the nbd_device structure */ /* These are sent over the network in the request/reply magic fields */ #define NBD_REQUEST_MAGIC … #define NBD_REPLY_MAGIC … /* Do *not* use magics: 0x12560953 0x96744668. */ /* magic 0x668e33ef for structured reply not supported by kernel yet */ /* * This is the packet used for communication between client and * server. All data are in network byte order. */ struct nbd_request { … } __attribute__((packed)); /* * This is the reply packet that nbd-server sends back to the client after * it has completed an I/O request (or an error occurs). */ struct nbd_reply { … }; #endif /* _UAPILINUX_NBD_H */
Codebase Browser
linux