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Initial commit of progress, minimal formatting niave free list

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This commit is contained in:
Christopher Haster
2017-02-26 18:05:27 -06:00
parent 02156cb47d
commit 160299d35c
5 changed files with 344 additions and 7 deletions
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13
lfs_bd.h
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@@ -10,6 +10,9 @@
#include "lfs_config.h"
// Opaque type for block devices
typedef void lfs_bd_t;
// Description of block devices
struct lfs_bd_info {
lfs_size_t read_size; // Size of readable block
@@ -27,29 +30,29 @@ struct lfs_bd_info {
// block device
struct lfs_bd_ops {
// Read a block
lfs_error_t (*read)(void *bd, uint8_t *buffer,
lfs_error_t (*read)(lfs_bd_t *bd, uint8_t *buffer,
lfs_ino_t ino, lfs_off_t off, lfs_size_t size);
// Program a block
//
// The block must have previously been erased.
lfs_error_t (*write)(void *bd, const uint8_t *buffer,
lfs_error_t (*write)(lfs_bd_t *bd, const uint8_t *buffer,
lfs_ino_t ino, lfs_off_t off, lfs_size_t size);
// Erase a block
//
// A block must be erased before being programmed. The
// state of an erased block is undefined.
lfs_error_t (*erase)(void *bd,
lfs_error_t (*erase)(lfs_bd_t *bd,
lfs_ino_t ino, lfs_off_t off, lfs_size_t size);
// Sync the block device
lfs_error_t (*sync)(void *bd);
lfs_error_t (*sync)(lfs_bd_t *bd);
// Get a description of the block device
//
// Any unknown information may be left as zero
lfs_error_t (*info)(void *bd, struct lfs_bd_info *info);
lfs_error_t (*info)(lfs_bd_t *bd, struct lfs_bd_info *info);
};