fs_sim/inode.c at main · n5q/fs_sim · GitHub

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
#include "inode.h"

bool inode_isused(inode_T *inode) {
  return (inode->isused_size & (1 << 7));
}

bool inode_isdir(inode_T *inode) {
  return (inode->isdir_parent & (1 << 7));
}

uint8_t inode_size(inode_T *inode) {
  return inode->isused_size & ~(1 << 7);
}

uint8_t inode_parent(inode_T *inode) {
  return inode->isdir_parent & ~(1 << 7);
}

void inode_set_state(inode_T *inode, bool state) {
  if (state) {
    inode->isused_size |= (1 << 7);
  }
  else {
    inode->isused_size &= ~(1 << 7);
  }
  return;
}

void inode_set_type(inode_T *inode, bool type) {
  if (type) {
    inode->isdir_parent |= (1 << 7);
  }
  else {
    inode->isdir_parent &= ~(1 << 7);
  }
  return;
}

void inode_set_size(inode_T *inode, uint8_t size) {
  inode->isused_size &= (1 << 7);
  inode->isused_size |= (size & ~(1 << 7));
  return;
}

void inode_set_parent(inode_T *inode, uint8_t parent) {
  inode->isdir_parent &= (1 << 7);
  inode->isdir_parent |= (parent & ~(1 << 7));
  return;
}