diff options
Diffstat (limited to 'tools/pkg/0/mlibc/linux-headers/linux/nbd.h')
| -rw-r--r-- | tools/pkg/0/mlibc/linux-headers/linux/nbd.h | 108 |
1 files changed, 0 insertions, 108 deletions
diff --git a/tools/pkg/0/mlibc/linux-headers/linux/nbd.h b/tools/pkg/0/mlibc/linux-headers/linux/nbd.h deleted file mode 100644 index cb47127..0000000 --- a/tools/pkg/0/mlibc/linux-headers/linux/nbd.h +++ /dev/null @@ -1,108 +0,0 @@ -/* SPDX-License-Identifier: GPL-1.0+ WITH Linux-syscall-note */ -/* - * 1999 Copyright (C) Pavel Machek, pavel@ucw.cz. 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 <ldl@aros.net> - * 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 LINUX_NBD_H -#define LINUX_NBD_H - -#include <linux/types.h> - -#define NBD_SET_SOCK _IO( 0xab, 0 ) -#define NBD_SET_BLKSIZE _IO( 0xab, 1 ) -#define NBD_SET_SIZE _IO( 0xab, 2 ) -#define NBD_DO_IT _IO( 0xab, 3 ) -#define NBD_CLEAR_SOCK _IO( 0xab, 4 ) -#define NBD_CLEAR_QUE _IO( 0xab, 5 ) -#define NBD_PRINT_DEBUG _IO( 0xab, 6 ) -#define NBD_SET_SIZE_BLOCKS _IO( 0xab, 7 ) -#define NBD_DISCONNECT _IO( 0xab, 8 ) -#define NBD_SET_TIMEOUT _IO( 0xab, 9 ) -#define NBD_SET_FLAGS _IO( 0xab, 10) - -/* - * See also https://github.com/NetworkBlockDevice/nbd/blob/master/doc/proto.md - * for additional userspace extensions not yet utilized in the kernel module. - */ - -enum { - NBD_CMD_READ = 0, - NBD_CMD_WRITE = 1, - NBD_CMD_DISC = 2, - NBD_CMD_FLUSH = 3, - NBD_CMD_TRIM = 4, - /* userspace defines additional extension commands */ - NBD_CMD_WRITE_ZEROES = 6, -}; - -/* values for flags field, these are server interaction specific. */ -#define NBD_FLAG_HAS_FLAGS (1 << 0) /* nbd-server supports flags */ -#define NBD_FLAG_READ_ONLY (1 << 1) /* device is read-only */ -#define NBD_FLAG_SEND_FLUSH (1 << 2) /* can flush writeback cache */ -#define NBD_FLAG_SEND_FUA (1 << 3) /* send FUA (forced unit access) */ -#define NBD_FLAG_ROTATIONAL (1 << 4) /* device is rotational */ -#define NBD_FLAG_SEND_TRIM (1 << 5) /* send trim/discard */ -#define NBD_FLAG_SEND_WRITE_ZEROES (1 << 6) /* supports WRITE_ZEROES */ -/* there is a gap here to match userspace */ -#define NBD_FLAG_CAN_MULTI_CONN (1 << 8) /* Server supports multiple connections per export. */ - -/* values for cmd flags in the upper 16 bits of request type */ -#define NBD_CMD_FLAG_FUA (1 << 16) /* FUA (forced unit access) op */ -#define NBD_CMD_FLAG_NO_HOLE (1 << 17) /* Do not punch a hole for WRITE_ZEROES */ - -/* These are client behavior specific flags. */ -#define NBD_CFLAG_DESTROY_ON_DISCONNECT (1 << 0) /* delete the nbd device on - disconnect. */ -#define NBD_CFLAG_DISCONNECT_ON_CLOSE (1 << 1) /* disconnect the nbd device on - * close by last opener. - */ - -/* userspace doesn't need the nbd_device structure */ - -/* These are sent over the network in the request/reply magic fields */ - -#define NBD_REQUEST_MAGIC 0x25609513 -#define NBD_REPLY_MAGIC 0x67446698 -/* 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 { - __be32 magic; /* NBD_REQUEST_MAGIC */ - __be32 type; /* See NBD_CMD_* */ - union { - __be64 cookie; /* Opaque identifier for request */ - char handle[8]; /* older spelling of cookie */ - }; - __be64 from; - __be32 len; -} __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 { - __be32 magic; /* NBD_REPLY_MAGIC */ - __be32 error; /* 0 = ok, else error */ - union { - __be64 cookie; /* Opaque identifier from request */ - char handle[8]; /* older spelling of cookie */ - }; -}; -#endif /* LINUX_NBD_H */ |