http://www.ousob.com --- Legacy Redefined OuSob - File: /wwwroot/clipx/usr/include/linux/nbd.h

/* * 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 */ #ifndef LINUX_NBD_H #define LINUX_NBD_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 ) enum { NBD_CMD_READ = 0, NBD_CMD_WRITE = 1, NBD_CMD_DISC = 2 }; #define nbd_cmd(req) ((req)->cmd[0]) #define MAX_NBD 128 /* userspace doesn't need the nbd_device structure */ #ifdef __KERNEL__ #include <linux/wait.h> /* values for flags field */ #define NBD_READ_ONLY 0x0001 #define NBD_WRITE_NOCHK 0x0002 struct request; struct nbd_device { int flags; int harderror; /* Code of hard error */ struct socket * sock; struct file * file; /* If == NULL, device is not ready, yet */ int magic; spinlock_t queue_lock; struct list_head queue_head;/* Requests are added here... */ struct request *active_req; wait_queue_head_t active_wq; struct semaphore tx_lock; struct gendisk *disk; int blksize; u64 bytesize; }; #endif /* 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. */ /* * This is the packet used for communication between client and * server. All data are in network byte order. */ struct nbd_request { u32 magic; u32 type; /* == READ || == WRITE */ char handle[8]; u64 from; u32 len; } #ifdef __GNUC__ __attribute__ ((packed)) #endif ; /* * 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 { u32 magic; u32 error; /* 0 = ok, else error */ char handle[8]; /* handle you got from request */ }; #endif