ext4_common.h 3.1 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 <linux/errno.h>
  26. #if defined(CONFIG_EXT4_WRITE)
  27. #include "ext4_journal.h"
  28. #include "crc16.h"
  29. #endif
  30. #define YES 1
  31. #define NO 0
  32. #define RECOVER 1
  33. #define SCAN 0
  34. #define S_IFLNK 0120000 /* symbolic link */
  35. #define BLOCK_NO_ONE 1
  36. #define SUPERBLOCK_START (2 * 512)
  37. #define SUPERBLOCK_SIZE 1024
  38. #define F_FILE 1
  39. static inline void *zalloc(size_t size)
  40. {
  41. void *p = memalign(ARCH_DMA_MINALIGN, size);
  42. memset(p, 0, size);
  43. return p;
  44. }
  45. int ext4fs_read_inode(struct ext2_data *data, int ino,
  46. struct ext2_inode *inode);
  47. int ext4fs_read_file(struct ext2fs_node *node, loff_t pos, loff_t len,
  48. char *buf, loff_t *actread);
  49. int ext4fs_find_file(const char *path, struct ext2fs_node *rootnode,
  50. struct ext2fs_node **foundnode, int expecttype);
  51. int ext4fs_iterate_dir(struct ext2fs_node *dir, char *name,
  52. struct ext2fs_node **fnode, int *ftype);
  53. #if defined(CONFIG_EXT4_WRITE)
  54. uint32_t ext4fs_div_roundup(uint32_t size, uint32_t n);
  55. uint16_t ext4fs_checksum_update(unsigned int i);
  56. int ext4fs_get_parent_inode_num(const char *dirname, char *dname, int flags);
  57. int ext4fs_update_parent_dentry(char *filename, int file_type);
  58. uint32_t ext4fs_get_new_blk_no(void);
  59. int ext4fs_get_new_inode_no(void);
  60. void ext4fs_reset_block_bmap(long int blockno, unsigned char *buffer,
  61. int index);
  62. int ext4fs_set_block_bmap(long int blockno, unsigned char *buffer, int index);
  63. int ext4fs_set_inode_bmap(int inode_no, unsigned char *buffer, int index);
  64. void ext4fs_reset_inode_bmap(int inode_no, unsigned char *buffer, int index);
  65. int ext4fs_iget(int inode_no, struct ext2_inode *inode);
  66. void ext4fs_allocate_blocks(struct ext2_inode *file_inode,
  67. unsigned int total_remaining_blocks,
  68. unsigned int *total_no_of_block);
  69. void put_ext4(uint64_t off, const void *buf, uint32_t size);
  70. struct ext2_block_group *ext4fs_get_group_descriptor
  71. (const struct ext_filesystem *fs, uint32_t bg_idx);
  72. uint64_t ext4fs_bg_get_block_id(const struct ext2_block_group *bg,
  73. const struct ext_filesystem *fs);
  74. uint64_t ext4fs_bg_get_inode_id(const struct ext2_block_group *bg,
  75. const struct ext_filesystem *fs);
  76. uint64_t ext4fs_bg_get_inode_table_id(const struct ext2_block_group *bg,
  77. const struct ext_filesystem *fs);
  78. uint64_t ext4fs_sb_get_free_blocks(const struct ext2_sblock *sb);
  79. void ext4fs_sb_set_free_blocks(struct ext2_sblock *sb, uint64_t free_blocks);
  80. uint32_t ext4fs_bg_get_free_blocks(const struct ext2_block_group *bg,
  81. const struct ext_filesystem *fs);
  82. #endif
  83. #endif