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 */