user: Please show me the C implementation that matches the assembly code listed below:

```asm
<read_file>:
  endbr64
  push   %rbp
  mov    %rsp,%rbp
  push   %r15
  push   %r14
  push   %r13
  push   %r12
  push   %rbx
  sub    $0x48,%rsp
  mov    %rdi,-0x68(%rbp)
  mov    %fs:0x28,%rax
  mov    %rax,-0x38(%rbp)
  xor    %eax,%eax
  mov    %rsp,%rax
  mov    %rax,%rbx
  mov    -0x68(%rbp),%rax
  mov    %rax,%rdi
  call   <strlen@plt>
  test   %eax,%eax
  jne    L139
  lea    D33(%rip),%rax
  mov    %rax,%rdi
  mov    $0x0,%eax
  call   <printf@plt>
  lea    -0x54(%rbp),%rax
  mov    %rax,%rsi
  lea    D101(%rip),%rax
  mov    %rax,%rdi
  call   <scanf@plt>
  jmp    L102
L139:
  mov    -0x68(%rbp),%rax
  mov    %rax,%rdi
  call   <atoi@plt>
  mov    %eax,-0x54(%rbp)
L102:
  lea    D74(%rip),%rax
  mov    %rax,%rdi
  mov    $0x0,%eax
  call   <printf@plt>
  lea    -0x50(%rbp),%rax
  mov    %rax,%rsi
  lea    D101(%rip),%rax
  mov    %rax,%rdi
  call   <scanf@plt>
  nop
L27:
  mov    $0x0,%eax
  call   <getchar@plt>
  cmp    $0xa,%al
  jne    L27
  mov    -0x50(%rbp),%eax
  add    $0x1,%eax
  movslq %eax,%rdx
  sub    $0x1,%rdx
  mov    %rdx,-0x48(%rbp)
  movslq %eax,%rdx
  mov    %rdx,%r14
  mov    $0x0,%r15d
  movslq %eax,%rdx
  mov    %rdx,%r12
  mov    $0x0,%r13d
  cltq
  mov    $0x10,%edx
  sub    $0x1,%rdx
  add    %rdx,%rax
  mov    $0x10,%esi
  mov    $0x0,%edx
  div    %rsi
  imul   $0x10,%rax,%rax
  mov    %rax,%rcx
  and    $0xfffffffffffff000,%rcx
  mov    %rsp,%rdx
  sub    %rcx,%rdx
L21:
  cmp    %rdx,%rsp
  je     L132
  sub    $0x1000,%rsp
  orq    $0x0,0xff8(%rsp)
  jmp    L21
L132:
  mov    %rax,%rdx
  and    $0xfff,%edx
  sub    %rdx,%rsp
  mov    %rax,%rdx
  and    $0xfff,%edx
  test   %rdx,%rdx
  je     L22
  and    $0xfff,%eax
  sub    $0x8,%rax
  add    %rsp,%rax
  orq    $0x0,(%rax)
L22:
  mov    %rsp,%rax
  add    $0x0,%rax
  mov    %rax,-0x40(%rbp)
  mov    -0x50(%rbp),%eax
  lea    0x1(%rax),%edx
  mov    -0x40(%rbp),%rax
  mov    $0x0,%esi
  mov    %rax,%rdi
  call   <memset@plt>
  mov    -0x50(%rbp),%edx
  mov    -0x54(%rbp),%eax
  mov    -0x40(%rbp),%rcx
  mov    %rcx,%rsi
  mov    %eax,%edi
  call   <myfs_file_read@plt>
  add    $0x5,%eax
  cmp    $0x4,%eax
  ja     L16
  mov    %eax,%eax
  lea    0x0(,%rax,4),%rdx
  lea    D43(%rip),%rax
  mov    (%rdx,%rax,1),%eax
  cltq
  lea    D43(%rip),%rdx
  add    %rdx,%rax
  notrack jmp *%rax
  lea    D27(%rip),%rax
  mov    %rax,%rdi
  call   <puts@plt>
  jmp    L69
  lea    D129(%rip),%rax
  mov    %rax,%rdi
  call   <puts@plt>
  jmp    L69
  lea    D71(%rip),%rax
  mov    %rax,%rdi
  call   <puts@plt>
  jmp    L69
  lea    D32(%rip),%rax
  mov    %rax,%rdi
  call   <puts@plt>
  jmp    L69
  lea    D112(%rip),%rax
  mov    %rax,%rdi
  call   <puts@plt>
  jmp    L69
L16:
  lea    D64(%rip),%rax
  mov    %rax,%rdi
  call   <puts@plt>
  movl   $0x0,-0x4c(%rbp)
  jmp    L0
L118:
  mov    -0x40(%rbp),%rdx
  mov    -0x4c(%rbp),%eax
  cltq
  movzbl (%rdx,%rax,1),%eax
  movsbl %al,%eax
  mov    %eax,%edi
  call   <putchar@plt>
  addl   $0x1,-0x4c(%rbp)
L0:
  mov    -0x50(%rbp),%eax
  cmp    %eax,-0x4c(%rbp)
  jl     L118
  lea    D81(%rip),%rax
  mov    %rax,%rdi
  call   <puts@plt>
L69:
  mov    %rbx,%rsp
  nop
  mov    -0x38(%rbp),%rax
  sub    %fs:0x28,%rax
  je     L49
  call   <__stack_chk_fail@plt>
L49:
  lea    -0x28(%rbp),%rsp
  pop    %rbx
  pop    %r12
  pop    %r13
  pop    %r14
  pop    %r15
  pop    %rbp
  ret
```

tool_calls: name: extract_symbolic_data
arguments: label: D33
type_guessed: string
name: extract_symbolic_data
arguments: label: D101
type_guessed: string
name: extract_symbolic_data
arguments: label: D74
type_guessed: string
name: extract_symbolic_data
arguments: label: D27
type_guessed: string
name: extract_symbolic_data
arguments: label: D129
type_guessed: string
name: extract_symbolic_data
arguments: label: D71
type_guessed: string
name: extract_symbolic_data
arguments: label: D32
type_guessed: string
name: extract_symbolic_data
arguments: label: D112
type_guessed: string
name: extract_symbolic_data
arguments: label: D64
type_guessed: string
name: extract_symbolic_data
arguments: label: D81
type_guessed: string

tool: D33: Input file descriptor to read:
-> 

tool: D101: %d

tool: D74: Input read size:
-> 

tool: D27: No mounted filesystem!

tool: D129: There are no file in the disk!

tool: D71: Block read error!

tool: D32: File descriptor not found!

tool: D112: Read size too big!

tool: D64: == content ==

tool: D81: 
== 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");
  }
}
```