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

#ifndef _LINUX_LOOP_H #define _LINUX_LOOP_H /* * include/linux/loop.h * * Written by Theodore Ts'o, 3/29/93. * * Copyright 1993 by Theodore Ts'o. Redistribution of this file is * permitted under the GNU General Public License. */ #define LO_NAME_SIZE 64 #define LO_KEY_SIZE 32 #ifdef __KERNEL__ #include <linux/bio.h> #include <linux/blkdev.h> #include <linux/spinlock.h> /* Possible states of device */ enum { Lo_unbound, Lo_bound, Lo_rundown, }; struct loop_func_table; struct loop_device { int lo_number; int lo_refcnt; loff_t lo_offset; loff_t lo_sizelimit; int lo_flags; int (*transfer)(struct loop_device *, int cmd, struct page *raw_page, unsigned raw_off, struct page *loop_page, unsigned loop_off, int size, sector_t real_block); char lo_file_name[LO_NAME_SIZE]; char lo_crypt_name[LO_NAME_SIZE]; char lo_encrypt_key[LO_KEY_SIZE]; int lo_encrypt_key_size; struct loop_func_table *lo_encryption; __u32 lo_init[2]; uid_t lo_key_owner; /* Who set the key */ int (*ioctl)(struct loop_device *, int cmd, unsigned long arg); struct file * lo_backing_file; struct block_device *lo_device; unsigned lo_blocksize; void *key_data; gfp_t old_gfp_mask; spinlock_t lo_lock; struct bio *lo_bio; struct bio *lo_biotail; int lo_state; struct completion lo_done; struct completion lo_bh_done; struct semaphore lo_ctl_mutex; int lo_pending; request_queue_t *lo_queue; }; #endif /* __KERNEL__ */ /* * Loop flags */ enum { LO_FLAGS_READ_ONLY = 1, LO_FLAGS_USE_AOPS = 2, }; #include <asm/posix_types.h> /* for __kernel_old_dev_t */ #include <asm/types.h> /* for __u64 */ /* Backwards compatibility version */ struct loop_info { int lo_number; /* ioctl r/o */ __kernel_old_dev_t lo_device; /* ioctl r/o */ unsigned long lo_inode; /* ioctl r/o */ __kernel_old_dev_t lo_rdevice; /* ioctl r/o */ int lo_offset; int lo_encrypt_type; int lo_encrypt_key_size; /* ioctl w/o */ int lo_flags; /* ioctl r/o */ char lo_name[LO_NAME_SIZE]; unsigned char lo_encrypt_key[LO_KEY_SIZE]; /* ioctl w/o */ unsigned long lo_init[2]; char reserved[4]; }; struct loop_info64 { __u64 lo_device; /* ioctl r/o */ __u64 lo_inode; /* ioctl r/o */ __u64 lo_rdevice; /* ioctl r/o */ __u64 lo_offset; __u64 lo_sizelimit;/* bytes, 0 == max available */ __u32 lo_number; /* ioctl r/o */ __u32 lo_encrypt_type; __u32 lo_encrypt_key_size; /* ioctl w/o */ __u32 lo_flags; /* ioctl r/o */ __u8 lo_file_name[LO_NAME_SIZE]; __u8 lo_crypt_name[LO_NAME_SIZE]; __u8 lo_encrypt_key[LO_KEY_SIZE]; /* ioctl w/o */ __u64 lo_init[2]; }; /* * Loop filter types */ #define LO_CRYPT_NONE 0 #define LO_CRYPT_XOR 1 #define LO_CRYPT_DES 2 #define LO_CRYPT_FISH2 3 /* Twofish encryption */ #define LO_CRYPT_BLOW 4 #define LO_CRYPT_CAST128 5 #define LO_CRYPT_IDEA 6 #define LO_CRYPT_DUMMY 9 #define LO_CRYPT_SKIPJACK 10 #define LO_CRYPT_CRYPTOAPI 18 #define MAX_LO_CRYPT 20 #ifdef __KERNEL__ /* Support for loadable transfer modules */ struct loop_func_table { int number; /* filter type */ int (*transfer)(struct loop_device *lo, int cmd, struct page *raw_page, unsigned raw_off, struct page *loop_page, unsigned loop_off, int size, sector_t real_block); int (*init)(struct loop_device *, const struct loop_info64 *); /* release is called from loop_unregister_transfer or clr_fd */ int (*release)(struct loop_device *); int (*ioctl)(struct loop_device *, int cmd, unsigned long arg); struct module *owner; }; int loop_register_transfer(struct loop_func_table *funcs); int loop_unregister_transfer(int number); #endif /* * IOCTL commands --- we will commandeer 0x4C ('L') */ #define LOOP_SET_FD 0x4C00 #define LOOP_CLR_FD 0x4C01 #define LOOP_SET_STATUS 0x4C02 #define LOOP_GET_STATUS 0x4C03 #define LOOP_SET_STATUS64 0x4C04 #define LOOP_GET_STATUS64 0x4C05 #define LOOP_CHANGE_FD 0x4C06 #endif