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authorEric Andersen2000-09-21 02:04:51 +0000
committerEric Andersen2000-09-21 02:04:51 +0000
commit624cc771da4ac5f15ec16a2b0f10feeef0b125c7 (patch)
tree159ab99cb2f1e14218204306c1be24f0b6c85745 /real_loop.h
parent8847b9a03afd59a4d4f833be12937b38216799d3 (diff)
downloadbusybox-624cc771da4ac5f15ec16a2b0f10feeef0b125c7.zip
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More portable handling of loop header files, as done in util-linux
Diffstat (limited to 'real_loop.h')
-rw-r--r--real_loop.h37
1 files changed, 37 insertions, 0 deletions
diff --git a/real_loop.h b/real_loop.h
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+++ b/real_loop.h
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+/*
+ * 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 Public License.
+ */
+
+#define LO_NAME_SIZE 64
+#define LO_KEY_SIZE 32
+
+struct loop_info {
+ int lo_number; /* ioctl r/o */
+ dev_t lo_device; /* ioctl r/o */
+ unsigned long lo_inode; /* ioctl r/o */
+ 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];
+};
+
+#define LO_CRYPT_NONE 0
+#define LO_CRYPT_XOR 1
+#define LO_CRYPT_DES 2
+#define LO_CRYPT_IDEA 3
+#define MAX_LO_CRYPT 4
+
+#define LOOP_SET_FD 0x4C00
+#define LOOP_CLR_FD 0x4C01
+#define LOOP_SET_STATUS 0x4C02
+#define LOOP_GET_STATUS 0x4C03