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-rw-r--r--include/uapi/linux/loop.h94
1 files changed, 94 insertions, 0 deletions
diff --git a/include/uapi/linux/loop.h b/include/uapi/linux/loop.h
new file mode 100644
index 000000000000..e0cecd2eabdc
--- /dev/null
+++ b/include/uapi/linux/loop.h
@@ -0,0 +1,94 @@
+/*
+ * 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.
+ */
+#ifndef _UAPI_LINUX_LOOP_H
+#define _UAPI_LINUX_LOOP_H
+
+
+#define LO_NAME_SIZE 64
+#define LO_KEY_SIZE 32
+
+
+/*
+ * Loop flags
+ */
+enum {
+ LO_FLAGS_READ_ONLY = 1,
+ LO_FLAGS_AUTOCLEAR = 4,
+ LO_FLAGS_PARTSCAN = 8,
+};
+
+#include <asm/posix_types.h> /* for __kernel_old_dev_t */
+#include <linux/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
+
+/*
+ * 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
+#define LOOP_SET_CAPACITY 0x4C07
+
+/* /dev/loop-control interface */
+#define LOOP_CTL_ADD 0x4C80
+#define LOOP_CTL_REMOVE 0x4C81
+#define LOOP_CTL_GET_FREE 0x4C82
+#endif /* _UAPI_LINUX_LOOP_H */