user: 请从给定的汇编指令推导出C源代码：

```asm
<read_file>:
  endbr64
  push   %rbp
  mov    %rsp,%rbp
  push   %r12
  mov    %rdi,%r12
  push   %rbx
  sub    $0x10,%rsp
  mov    %fs:0x28,%rax
  mov    %rax,-0x18(%rbp)
  xor    %eax,%eax
  call   <strlen@plt>
  test   %eax,%eax
  jne    L84
  lea    D61(%rip),%rdi
  lea    D94(%rip),%r12
  call   <printf@plt>
  lea    -0x20(%rbp),%rsi
  mov    %r12,%rdi
  call   <scanf@plt>
L131:
  lea    D92(%rip),%rdi
  xor    %eax,%eax
  call   <printf@plt>
  lea    -0x1c(%rbp),%rsi
  mov    %r12,%rdi
  call   <scanf@plt>
  nopw   0x0(%rax,%rax,1)
L148:
  xor    %eax,%eax
  call   <getchar@plt>
  cmp    $0xa,%al
  jne    L148
  mov    -0x1c(%rbp),%eax
  mov    %rsp,%rsi
  lea    0x1(%rax),%edx
  movslq %edx,%rax
  add    $0xf,%rax
  mov    %rax,%rcx
  and    $0xfffffffffffff000,%rax
  sub    %rax,%rsi
  and    $0xfffffffffffffff0,%rcx
  cmp    %rsi,%rsp
  je     L105
L93:
  sub    $0x1000,%rsp
  orq    $0x0,0xff8(%rsp)
  cmp    %rsi,%rsp
  jne    L93
L105:
  and    $0xfff,%ecx
  sub    %rcx,%rsp
  test   %rcx,%rcx
  jne    L143
L139:
  xor    %esi,%esi
  mov    %rsp,%rdi
  mov    %rsp,%r12
  call   <memset@plt>
  mov    -0x1c(%rbp),%edx
  mov    -0x20(%rbp),%edi
  mov    %rsp,%rsi
  call   <myfs_file_read@plt>
  mov    %eax,%r8d
  lea    0x5(%rax),%eax
  cmp    $0xfffffffb,%r8d
  jb     L112
  lea    D71(%rip),%rdx
  movslq (%rdx,%rax,4),%rax
  add    %rdx,%rax
  notrack jmp *%rax
  nop
L84:
  mov    %r12,%rdi
  lea    D94(%rip),%r12
  call   <atoi@plt>
  mov    %eax,-0x20(%rbp)
  jmp    L131
  nopw   0x0(%rax,%rax,1)
L143:
  orq    $0x0,-0x8(%rsp,%rcx,1)
  jmp    L139
  lea    D84(%rip),%rdi
  call   <puts@plt>
  nopl   0x0(%rax)
L34:
  mov    -0x18(%rbp),%rax
  sub    %fs:0x28,%rax
  jne    L16
  lea    -0x10(%rbp),%rsp
  pop    %rbx
  pop    %r12
  pop    %rbp
  ret
  lea    D104(%rip),%rdi
  call   <puts@plt>
  jmp    L34
  lea    D68(%rip),%rdi
  call   <puts@plt>
  jmp    L34
  lea    D78(%rip),%rdi
  call   <puts@plt>
  jmp    L34
  lea    D35(%rip),%rdi
  call   <puts@plt>
  jmp    L34
L112:
  lea    D15(%rip),%rdi
  call   <puts@plt>
  mov    -0x1c(%rbp),%eax
  test   %eax,%eax
  jle    L41
  xor    %ebx,%ebx
  nopl   (%rax)
L73:
  movsbl (%r12,%rbx,1),%edi
  add    $0x1,%rbx
  call   <putchar@plt>
  cmp    %ebx,-0x1c(%rbp)
  jg     L73
L41:
  lea    D23(%rip),%rdi
  call   <puts@plt>
  jmp    L34
L16:
  call   <__stack_chk_fail@plt>
```

tool_calls: name: read_data
arguments: data_tag: D61
datatype: string
name: read_data
arguments: data_tag: D94
datatype: string
name: read_data
arguments: data_tag: D92
datatype: string
name: read_data
arguments: data_tag: D84
datatype: string
name: read_data
arguments: data_tag: D104
datatype: string
name: read_data
arguments: data_tag: D68
datatype: string
name: read_data
arguments: data_tag: D78
datatype: string
name: read_data
arguments: data_tag: D35
datatype: string
name: read_data
arguments: data_tag: D15
datatype: string
name: read_data
arguments: data_tag: D23
datatype: string

tool: D61: Input file descriptor to read:
-> 

tool: D94: %d

tool: D92: Input read size:
-> 

tool: D84: There are no file in the disk!

tool: D104: Block read error!

tool: D68: File descriptor not found!

tool: D78: Read size too big!

tool: D35: No mounted filesystem!

tool: D15: == content ==

tool: D23: 
== Successful read! ==

assistant: ```c
void read_file(char *fdStr) {
  int fd;
  if (!strlen(fdStr)) {
    printf("Input file descriptor to read:\n-> ");
    scanf("%d", &fd);
  } else {
    fd = atoi(fdStr);
  }
  int data_size;
  printf("Input read size:\n-> ");
  scanf("%d", &data_size);
  while (getchar() != '\n')
    ;
  char buf[data_size + 1];
  memset(buf, 0, data_size + 1);
  switch (myfs_file_read(fd, buf, data_size)) {
  case -1:
    printf("No mounted filesystem!\n");
    break;
  case -2:
    printf("There are no file in the disk!\n");
    break;
  case -3:
    printf("Block read error!\n");
    break;
  case -4:
    printf("File descriptor not found!\n");
    break;
  case -5:
    printf("Read size too big!\n");
    break;
  default:
    printf("== content ==\n");
    for (int i = 0; i < data_size; ++i) {
      printf("%c", buf[i]);
    }
    printf("\n== Successful read! ==\n");
  }
}
```