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Small Fix && cargo fmt

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This commit is contained in:
Yifan Wu 2022-01-22 12:40:54 -08:00
parent c9583b0f53
commit ae3ba9c26f
83 changed files with 1085 additions and 1079 deletions
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100
easy-fs/src/efs.rs
View file

@ -1,16 +1,10 @@
use alloc::sync::Arc;
use spin::Mutex;
use super::{
BlockDevice,
Bitmap,
block_cache_sync_all, get_block_cache, Bitmap, BlockDevice, DiskInode, DiskInodeType, Inode,
SuperBlock,
DiskInode,
DiskInodeType,
Inode,
get_block_cache,
block_cache_sync_all,
};
use crate::BLOCK_SZ;
use alloc::sync::Arc;
use spin::Mutex;
pub struct EasyFileSystem {
pub block_device: Arc<dyn BlockDevice>,
@ -50,39 +44,36 @@ impl EasyFileSystem {
};
// clear all blocks
for i in 0..total_blocks {
get_block_cache(
i as usize,
Arc::clone(&block_device)
)
.lock()
.modify(0, |data_block: &mut DataBlock| {
for byte in data_block.iter_mut() { *byte = 0; }
});
get_block_cache(i as usize, Arc::clone(&block_device))
.lock()
.modify(0, |data_block: &mut DataBlock| {
for byte in data_block.iter_mut() {
*byte = 0;
}
});
}
// initialize SuperBlock
get_block_cache(0, Arc::clone(&block_device))
.lock()
.modify(0, |super_block: &mut SuperBlock| {
super_block.initialize(
total_blocks,
inode_bitmap_blocks,
inode_area_blocks,
data_bitmap_blocks,
data_area_blocks,
);
});
get_block_cache(0, Arc::clone(&block_device)).lock().modify(
0,
|super_block: &mut SuperBlock| {
super_block.initialize(
total_blocks,
inode_bitmap_blocks,
inode_area_blocks,
data_bitmap_blocks,
data_area_blocks,
);
},
);
// write back immediately
// create a inode for root node "/"
assert_eq!(efs.alloc_inode(), 0);
let (root_inode_block_id, root_inode_offset) = efs.get_disk_inode_pos(0);
get_block_cache(
root_inode_block_id as usize,
Arc::clone(&block_device)
)
.lock()
.modify(root_inode_offset, |disk_inode: &mut DiskInode| {
disk_inode.initialize(DiskInodeType::Directory);
});
get_block_cache(root_inode_block_id as usize, Arc::clone(&block_device))
.lock()
.modify(root_inode_offset, |disk_inode: &mut DiskInode| {
disk_inode.initialize(DiskInodeType::Directory);
});
block_cache_sync_all();
Arc::new(Mutex::new(efs))
}
@ -97,10 +88,7 @@ impl EasyFileSystem {
super_block.inode_bitmap_blocks + super_block.inode_area_blocks;
let efs = Self {
block_device,
inode_bitmap: Bitmap::new(
1,
super_block.inode_bitmap_blocks as usize
),
inode_bitmap: Bitmap::new(1, super_block.inode_bitmap_blocks as usize),
data_bitmap: Bitmap::new(
(1 + inode_total_blocks) as usize,
super_block.data_bitmap_blocks as usize,
@ -117,19 +105,17 @@ impl EasyFileSystem {
// acquire efs lock temporarily
let (block_id, block_offset) = efs.lock().get_disk_inode_pos(0);
// release efs lock
Inode::new(
block_id,
block_offset,
Arc::clone(efs),
block_device,
)
Inode::new(block_id, block_offset, Arc::clone(efs), block_device)
}
pub fn get_disk_inode_pos(&self, inode_id: u32) -> (u32, usize) {
let inode_size = core::mem::size_of::<DiskInode>();
let inodes_per_block = (BLOCK_SZ / inode_size) as u32;
let block_id = self.inode_area_start_block + inode_id / inodes_per_block;
(block_id, (inode_id % inodes_per_block) as usize * inode_size)
(
block_id,
(inode_id % inodes_per_block) as usize * inode_size,
)
}
pub fn get_data_block_id(&self, data_block_id: u32) -> u32 {
@ -146,18 +132,16 @@ impl EasyFileSystem {
}
pub fn dealloc_data(&mut self, block_id: u32) {
get_block_cache(
block_id as usize,
Arc::clone(&self.block_device)
)
.lock()
.modify(0, |data_block: &mut DataBlock| {
data_block.iter_mut().for_each(|p| { *p = 0; })
});
get_block_cache(block_id as usize, Arc::clone(&self.block_device))
.lock()
.modify(0, |data_block: &mut DataBlock| {
data_block.iter_mut().for_each(|p| {
*p = 0;
})
});
self.data_bitmap.dealloc(
&self.block_device,
(block_id - self.data_area_start_block) as usize
(block_id - self.data_area_start_block) as usize,
)
}
}
}