AquilaOS documentation
How it works, and its code
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super.c
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1
4
5#include <ext2.h>
6
14int ext2_superblock_rewrite(struct ext2 *desc)
15{
16 return ext2_io(desc, 1, 1024, sizeof(struct ext2_superblock), desc->superblock);
17}
ext2_io
int ext2_io(struct ext2 *desc, int write, off_t off, size_t size, void *buf)
Reads or writes bytes of the filesystem's disk, all of them.
Definition block.c:19
ext2_superblock_rewrite
int ext2_superblock_rewrite(struct ext2 *desc)
Writes the in-memory copy of the superblock back to the disk, after a change to its counts of free bl...
Definition super.c:14
ext2_superblock
The superblock, as it is on the disk, 1024 bytes into it.
Definition ext2.h:34
ext2
A mounted ext2 filesystem.
Definition ext2.h:168
ext2::superblock
struct ext2_superblock * superblock
Definition ext2.h:170