/* SPDX-License-Identifier: GPL-1.0+ WITH Linux-syscall-note */ /* * Copyright 1993 by Theodore Ts'o. */ #ifndef _UAPI_LINUX_LOOP_H #define _UAPI_LINUX_LOOP_H #define LO_NAME_SIZE … #define LO_KEY_SIZE … /* * Loop flags */ enum { … }; /* LO_FLAGS that can be set using LOOP_SET_STATUS(64) */ #define LOOP_SET_STATUS_SETTABLE_FLAGS … /* LO_FLAGS that can be cleared using LOOP_SET_STATUS(64) */ #define LOOP_SET_STATUS_CLEARABLE_FLAGS … /* LO_FLAGS that can be set using LOOP_CONFIGURE */ #define LOOP_CONFIGURE_SETTABLE_FLAGS … #include <asm/posix_types.h> /* for __kernel_old_dev_t */ #include <linux/types.h> /* for __u64 */ /* Backwards compatibility version */ struct loop_info { … }; struct loop_info64 { … }; /** * struct loop_config - Complete configuration for a loop device. * @fd: fd of the file to be used as a backing file for the loop device. * @block_size: block size to use; ignored if 0. * @info: struct loop_info64 to configure the loop device with. * * This structure is used with the LOOP_CONFIGURE ioctl, and can be used to * atomically setup and configure all loop device parameters at once. */ struct loop_config { … }; /* * Loop filter types */ #define LO_CRYPT_NONE … #define LO_CRYPT_XOR … #define LO_CRYPT_DES … #define LO_CRYPT_FISH2 … #define LO_CRYPT_BLOW … #define LO_CRYPT_CAST128 … #define LO_CRYPT_IDEA … #define LO_CRYPT_DUMMY … #define LO_CRYPT_SKIPJACK … #define LO_CRYPT_CRYPTOAPI … #define MAX_LO_CRYPT … /* * IOCTL commands --- we will commandeer 0x4C ('L') */ #define LOOP_SET_FD … #define LOOP_CLR_FD … #define LOOP_SET_STATUS … #define LOOP_GET_STATUS … #define LOOP_SET_STATUS64 … #define LOOP_GET_STATUS64 … #define LOOP_CHANGE_FD … #define LOOP_SET_CAPACITY … #define LOOP_SET_DIRECT_IO … #define LOOP_SET_BLOCK_SIZE … #define LOOP_CONFIGURE … /* /dev/loop-control interface */ #define LOOP_CTL_ADD … #define LOOP_CTL_REMOVE … #define LOOP_CTL_GET_FREE … #endif /* _UAPI_LINUX_LOOP_H */
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