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oasis-root

Compiled tree of Oasis Linux based on own branch at <https://hacktivis.me/git/oasis/> git clone https://anongit.hacktivis.me/git/oasis-root.git

ext4.h (4122B)

    

  1. /* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
  3. #ifndef _LINUX_EXT4_H
  4. #define _LINUX_EXT4_H
  5. #include <linux/fiemap.h>
  6. #include <linux/fs.h>
  7. #include <linux/ioctl.h>
  8. #include <linux/types.h>
  10. /*
  11.  * ext4-specific ioctl commands
  12.  */
  13. #define	EXT4_IOC_GETVERSION		_IOR('f', 3, long)
  14. #define	EXT4_IOC_SETVERSION		_IOW('f', 4, long)
  15. #define	EXT4_IOC_GETVERSION_OLD		FS_IOC_GETVERSION
  16. #define	EXT4_IOC_SETVERSION_OLD		FS_IOC_SETVERSION
  17. #define EXT4_IOC_GETRSVSZ		_IOR('f', 5, long)
  18. #define EXT4_IOC_SETRSVSZ		_IOW('f', 6, long)
  19. #define EXT4_IOC_GROUP_EXTEND		_IOW('f', 7, unsigned long)
  20. #define EXT4_IOC_GROUP_ADD		_IOW('f', 8, struct ext4_new_group_input)
  21. #define EXT4_IOC_MIGRATE		_IO('f', 9)
  22.  /* note ioctl 10 reserved for an early version of the FIEMAP ioctl */
  23.  /* note ioctl 11 reserved for filesystem-independent FIEMAP ioctl */
  24. #define EXT4_IOC_ALLOC_DA_BLKS		_IO('f', 12)
  25. #define EXT4_IOC_MOVE_EXT		_IOWR('f', 15, struct move_extent)
  26. #define EXT4_IOC_RESIZE_FS		_IOW('f', 16, __u64)
  27. #define EXT4_IOC_SWAP_BOOT		_IO('f', 17)
  28. #define EXT4_IOC_PRECACHE_EXTENTS	_IO('f', 18)
  29. /* ioctl codes 19--39 are reserved for fscrypt */
  30. #define EXT4_IOC_CLEAR_ES_CACHE		_IO('f', 40)
  31. #define EXT4_IOC_GETSTATE		_IOW('f', 41, __u32)
  32. #define EXT4_IOC_GET_ES_CACHE		_IOWR('f', 42, struct fiemap)
  33. #define EXT4_IOC_CHECKPOINT		_IOW('f', 43, __u32)
  34. #define EXT4_IOC_GETFSUUID		_IOR('f', 44, struct fsuuid)
  35. #define EXT4_IOC_SETFSUUID		_IOW('f', 44, struct fsuuid)
  37. #define EXT4_IOC_SHUTDOWN _IOR('X', 125, __u32)
  39. /*
  40.  * ioctl commands in 32 bit emulation
  41.  */
  42. #define EXT4_IOC32_GETVERSION		_IOR('f', 3, int)
  43. #define EXT4_IOC32_SETVERSION		_IOW('f', 4, int)
  44. #define EXT4_IOC32_GETRSVSZ		_IOR('f', 5, int)
  45. #define EXT4_IOC32_SETRSVSZ		_IOW('f', 6, int)
  46. #define EXT4_IOC32_GROUP_EXTEND		_IOW('f', 7, unsigned int)
  47. #define EXT4_IOC32_GROUP_ADD		_IOW('f', 8, struct compat_ext4_new_group_input)
  48. #define EXT4_IOC32_GETVERSION_OLD	FS_IOC32_GETVERSION
  49. #define EXT4_IOC32_SETVERSION_OLD	FS_IOC32_SETVERSION
  51. /*
  52.  * Flags returned by EXT4_IOC_GETSTATE
  53.  *
  54.  * We only expose to userspace a subset of the state flags in
  55.  * i_state_flags
  56.  */
  57. #define EXT4_STATE_FLAG_EXT_PRECACHED	0x00000001
  58. #define EXT4_STATE_FLAG_NEW		0x00000002
  59. #define EXT4_STATE_FLAG_NEWENTRY	0x00000004
  60. #define EXT4_STATE_FLAG_DA_ALLOC_CLOSE	0x00000008
  62. /*
  63.  * Flags for ioctl EXT4_IOC_CHECKPOINT
  64.  */
  65. #define EXT4_IOC_CHECKPOINT_FLAG_DISCARD	0x1
  66. #define EXT4_IOC_CHECKPOINT_FLAG_ZEROOUT	0x2
  67. #define EXT4_IOC_CHECKPOINT_FLAG_DRY_RUN	0x4
  68. #define EXT4_IOC_CHECKPOINT_FLAG_VALID		(EXT4_IOC_CHECKPOINT_FLAG_DISCARD | \
  69. 						EXT4_IOC_CHECKPOINT_FLAG_ZEROOUT | \
  70. 						EXT4_IOC_CHECKPOINT_FLAG_DRY_RUN)
  72. /*
  73.  * Structure for EXT4_IOC_GETFSUUID/EXT4_IOC_SETFSUUID
  74.  */
  75. struct fsuuid {
  76. 	__u32       fsu_len;
  77. 	__u32       fsu_flags;
  78. 	__u8        fsu_uuid[];
  79. };
  81. /*
  82.  * Structure for EXT4_IOC_MOVE_EXT
  83.  */
  84. struct move_extent {
  85. 	__u32 reserved;		/* should be zero */
  86. 	__u32 donor_fd;		/* donor file descriptor */
  87. 	__u64 orig_start;	/* logical start offset in block for orig */
  88. 	__u64 donor_start;	/* logical start offset in block for donor */
  89. 	__u64 len;		/* block length to be moved */
  90. 	__u64 moved_len;	/* moved block length */
  91. };
  93. /*
  94.  * Flags used by EXT4_IOC_SHUTDOWN
  95.  */
  96. #define EXT4_GOING_FLAGS_DEFAULT		0x0	/* going down */
  97. #define EXT4_GOING_FLAGS_LOGFLUSH		0x1	/* flush log but not data */
  98. #define EXT4_GOING_FLAGS_NOLOGFLUSH		0x2	/* don't flush log nor data */
  100. /* Used to pass group descriptor data when online resize is done */
  101. struct ext4_new_group_input {
  102. 	__u32 group;		/* Group number for this data */
  103. 	__u64 block_bitmap;	/* Absolute block number of block bitmap */
  104. 	__u64 inode_bitmap;	/* Absolute block number of inode bitmap */
  105. 	__u64 inode_table;	/* Absolute block number of inode table start */
  106. 	__u32 blocks_count;	/* Total number of blocks in this group */
  107. 	__u16 reserved_blocks;	/* Number of reserved blocks in this group */
  108. 	__u16 unused;
  109. };
  111. /*
  112.  * Returned by EXT4_IOC_GET_ES_CACHE as an additional possible flag.
  113.  * It indicates that the entry in extent status cache is for a hole.
  114.  */
  115. #define EXT4_FIEMAP_EXTENT_HOLE		0x08000000
  117. #endif /* _LINUX_EXT4_H */