ext4_common.h 3.2 KB

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  1. /* SPDX-License-Identifier: GPL-2.0+ */
  2. /*
  3. * (C) Copyright 2011 - 2012 Samsung Electronics
  4. * EXT4 filesystem implementation in Uboot by
  5. * Uma Shankar <uma.shankar@samsung.com>
  6. * Manjunatha C Achar <a.manjunatha@samsung.com>
  7. *
  8. * ext4ls and ext4load : based on ext2 ls load support in Uboot.
  9. *
  10. * (C) Copyright 2004
  11. * esd gmbh <www.esd-electronics.com>
  12. * Reinhard Arlt <reinhard.arlt@esd-electronics.com>
  13. *
  14. * based on code from grub2 fs/ext2.c and fs/fshelp.c by
  15. * GRUB -- GRand Unified Bootloader
  16. * Copyright (C) 2003, 2004 Free Software Foundation, Inc.
  17. *
  18. * ext4write : Based on generic ext4 protocol.
  19. */
  20. #ifndef __EXT4_COMMON__
  21. #define __EXT4_COMMON__
  22. #include <ext_common.h>
  23. #include <ext4fs.h>
  24. #include <malloc.h>
  25. #include <asm/cache.h>
  26. #include <linux/errno.h>
  27. #if defined(CONFIG_EXT4_WRITE)
  28. #include "ext4_journal.h"
  29. #include "crc16.h"
  30. #endif
  31. #define YES 1
  32. #define NO 0
  33. #define RECOVER 1
  34. #define SCAN 0
  35. #define S_IFLNK 0120000 /* symbolic link */
  36. #define BLOCK_NO_ONE 1
  37. #define SUPERBLOCK_START (2 * 512)
  38. #define SUPERBLOCK_SIZE 1024
  39. #define F_FILE 1
  40. static inline void *zalloc(size_t size)
  41. {
  42. void *p = memalign(ARCH_DMA_MINALIGN, size);
  43. memset(p, 0, size);
  44. return p;
  45. }
  46. int ext4fs_read_inode(struct ext2_data *data, int ino,
  47. struct ext2_inode *inode);
  48. int ext4fs_read_file(struct ext2fs_node *node, loff_t pos, loff_t len,
  49. char *buf, loff_t *actread);
  50. int ext4fs_find_file(const char *path, struct ext2fs_node *rootnode,
  51. struct ext2fs_node **foundnode, int expecttype);
  52. int ext4fs_iterate_dir(struct ext2fs_node *dir, char *name,
  53. struct ext2fs_node **fnode, int *ftype);
  54. #if defined(CONFIG_EXT4_WRITE)
  55. uint32_t ext4fs_div_roundup(uint32_t size, uint32_t n);
  56. uint16_t ext4fs_checksum_update(unsigned int i);
  57. int ext4fs_get_parent_inode_num(const char *dirname, char *dname, int flags);
  58. int ext4fs_update_parent_dentry(char *filename, int file_type);
  59. uint32_t ext4fs_get_new_blk_no(void);
  60. int ext4fs_get_new_inode_no(void);
  61. void ext4fs_reset_block_bmap(long int blockno, unsigned char *buffer,
  62. int index);
  63. int ext4fs_set_block_bmap(long int blockno, unsigned char *buffer, int index);
  64. int ext4fs_set_inode_bmap(int inode_no, unsigned char *buffer, int index);
  65. void ext4fs_reset_inode_bmap(int inode_no, unsigned char *buffer, int index);
  66. int ext4fs_iget(int inode_no, struct ext2_inode *inode);
  67. void ext4fs_allocate_blocks(struct ext2_inode *file_inode,
  68. unsigned int total_remaining_blocks,
  69. unsigned int *total_no_of_block);
  70. void put_ext4(uint64_t off, const void *buf, uint32_t size);
  71. struct ext2_block_group *ext4fs_get_group_descriptor
  72. (const struct ext_filesystem *fs, uint32_t bg_idx);
  73. uint64_t ext4fs_bg_get_block_id(const struct ext2_block_group *bg,
  74. const struct ext_filesystem *fs);
  75. uint64_t ext4fs_bg_get_inode_id(const struct ext2_block_group *bg,
  76. const struct ext_filesystem *fs);
  77. uint64_t ext4fs_bg_get_inode_table_id(const struct ext2_block_group *bg,
  78. const struct ext_filesystem *fs);
  79. uint64_t ext4fs_sb_get_free_blocks(const struct ext2_sblock *sb);
  80. void ext4fs_sb_set_free_blocks(struct ext2_sblock *sb, uint64_t free_blocks);
  81. uint32_t ext4fs_bg_get_free_blocks(const struct ext2_block_group *bg,
  82. const struct ext_filesystem *fs);
  83. #endif
  84. #endif