user: Translate the below assembly code into C programming language:

```asm
<crypt_loop_attach>:
  endbr64
  push   %rbp
  mov    %rsp,%rbp
  sub    $0x50,%rsp
  mov    %rdi,-0x38(%rbp)
  mov    %rsi,-0x40(%rbp)
  mov    %edx,-0x44(%rbp)
  mov    %ecx,-0x48(%rbp)
  mov    %r8,-0x50(%rbp)
  mov    %fs:0x28,%rax
  mov    %rax,-0x8(%rbp)
  xor    %eax,%eax
  movq   $0x0,-0x20(%rbp)
  movq   $0x0,-0x18(%rbp)
  movq   $0x0,-0x10(%rbp)
  movl   $0xffffffff,-0x2c(%rbp)
  movl   $0xffffffff,-0x28(%rbp)
  movl   $0x1,-0x24(%rbp)
  mov    -0x50(%rbp),%rax
  mov    (%rax),%eax
  test   %eax,%eax
  je     L82
  mov    D54(%rip),%rax
  mov    (%rax),%eax
  jmp    L32
L82:
  mov    D50(%rip),%rax
  mov    (%rax),%eax
L32:
  mov    D79(%rip),%rdx
  mov    (%rdx),%edx
  or     %eax,%edx
  mov    -0x40(%rbp),%rax
  mov    %edx,%esi
  mov    %rax,%rdi
  call   <open@plt>
  mov    %eax,-0x28(%rbp)
  cmpl   $0x0,-0x28(%rbp)
  jns    L210
  mov    D99(%rip),%rax
  mov    (%rax),%rdx
  mov    D48(%rip),%rax
  mov    (%rax),%rax
  cmp    %rax,%rdx
  jne    L210
  mov    -0x50(%rbp),%rax
  mov    (%rax),%eax
  test   %eax,%eax
  jne    L210
  mov    -0x50(%rbp),%rax
  movl   $0x1,(%rax)
  mov    D54(%rip),%rax
  mov    (%rax),%edx
  mov    D79(%rip),%rax
  mov    (%rax),%eax
  or     %eax,%edx
  mov    -0x40(%rbp),%rax
  mov    %edx,%esi
  mov    %rax,%rdi
  call   <open@plt>
  mov    %eax,-0x28(%rbp)
L210:
  cmpl   $0x0,-0x28(%rbp)
  js     L84
  mov    -0x50(%rbp),%rax
  mov    (%rax),%eax
  test   %eax,%eax
  je     L146
  mov    D54(%rip),%rax
  mov    (%rax),%eax
  jmp    L93
L146:
  mov    D50(%rip),%rax
  mov    (%rax),%eax
L93:
  mov    -0x38(%rbp),%rdx
  mov    %eax,%esi
  mov    %rdx,%rdi
  call   <open@plt>
  mov    %eax,-0x2c(%rbp)
  cmpl   $0x0,-0x2c(%rbp)
  js     L201
  mov    D57(%rip),%rax
  mov    (%rax),%edx
  mov    -0x18(%rbp),%rax
  mov    %rax,%rcx
  mov    -0x40(%rbp),%rax
  mov    %rax,%rsi
  mov    %rcx,%rdi
  call   <strncpy@plt>
  mov    -0x44(%rbp),%eax
  mov    %eax,-0x20(%rbp)
  cmpl   $0x0,-0x48(%rbp)
  je     L6
  mov    -0x1c(%rbp),%eax
  or     $0x4,%eax
  mov    %eax,-0x1c(%rbp)
L6:
  mov    D10(%rip),%rax
  mov    (%rax),%ecx
  mov    -0x28(%rbp),%edx
  mov    -0x2c(%rbp),%eax
  mov    %ecx,%esi
  mov    %eax,%edi
  mov    $0x0,%eax
  call   <ioctl@plt>
  test   %rax,%rax
  js     L80
  mov    D129(%rip),%rax
  mov    (%rax),%ecx
  lea    -0x20(%rbp),%rdx
  mov    -0x2c(%rbp),%eax
  mov    %ecx,%esi
  mov    %eax,%edi
  mov    $0x0,%eax
  call   <ioctl@plt>
  test   %rax,%rax
  jns    L126
  mov    D52(%rip),%rax
  mov    (%rax),%ecx
  mov    -0x2c(%rbp),%eax
  mov    $0x0,%edx
  mov    %ecx,%esi
  mov    %eax,%edi
  mov    $0x0,%eax
  call   <ioctl@plt>
  jmp    L174
L126:
  cmpl   $0x0,-0x48(%rbp)
  je     L257
  lea    -0x20(%rbp),%rax
  mov    $0x18,%edx
  mov    $0x0,%esi
  mov    %rax,%rdi
  call   <memset@plt>
  mov    D4(%rip),%rax
  mov    (%rax),%ecx
  lea    -0x20(%rbp),%rdx
  mov    -0x2c(%rbp),%eax
  mov    %ecx,%esi
  mov    %eax,%edi
  mov    $0x0,%eax
  call   <ioctl@plt>
  test   %rax,%rax
  js     L37
  mov    -0x1c(%rbp),%eax
  and    $0x4,%eax
  test   %eax,%eax
  jne    L257
L37:
  mov    D52(%rip),%rax
  mov    (%rax),%ecx
  mov    -0x2c(%rbp),%eax
  mov    $0x0,%edx
  mov    %ecx,%esi
  mov    %eax,%edi
  mov    $0x0,%eax
  call   <ioctl@plt>
  jmp    L174
L257:
  movl   $0x0,-0x24(%rbp)
  jmp    L174
L84:
  nop
  jmp    L174
L201:
  nop
  jmp    L174
L80:
  nop
L174:
  cmpl   $0x0,-0x24(%rbp)
  je     L224
  cmpl   $0x0,-0x2c(%rbp)
  js     L224
  mov    -0x2c(%rbp),%eax
  mov    %eax,%edi
  call   <close@plt>
L224:
  cmpl   $0x0,-0x28(%rbp)
  js     L105
  mov    -0x28(%rbp),%eax
  mov    %eax,%edi
  call   <close@plt>
L105:
  cmpl   $0x0,-0x24(%rbp)
  jne    L76
  mov    -0x2c(%rbp),%eax
  jmp    L206
L76:
  mov    $0xffffffff,%eax
L206:
  mov    -0x8(%rbp),%rdx
  sub    %fs:0x28,%rdx
  je     L92
  call   <__stack_chk_fail@plt>
L92:
  leave
  ret
```

assistant: ```c
int crypt_loop_attach(const char *loop, const char *file, int offset, int autoclear, int *readonly) {
  struct loop_info64 lo64 = {0};
  int loop_fd = -1, file_fd = -1, r = 1;
  file_fd = open(file, (*readonly ? O_RDONLY : O_RDWR) | O_EXCL);
  if (file_fd < 0 && errno == EROFS && !*readonly) {
    *readonly = 1;
    file_fd = open(file, O_RDONLY | O_EXCL);
  }
  if (file_fd < 0)
    goto out;
  loop_fd = open(loop, *readonly ? O_RDONLY : O_RDWR);
  if (loop_fd < 0)
    goto out;
  strncpy((char *)lo64.lo_file_name, file, LO_NAME_SIZE);
  lo64.lo_offset = offset;
  if (autoclear)
    lo64.lo_flags |= 4;
  if (ioctl(loop_fd, LOOP_SET_FD, file_fd) < 0)
    goto out;
  if (ioctl(loop_fd, LOOP_SET_STATUS64, &lo64) < 0) {
    (void)ioctl(loop_fd, LOOP_CLR_FD, 0);
    goto out;
  }
  if (autoclear) {
    memset(&lo64, 0, sizeof(lo64));
    if (ioctl(loop_fd, LOOP_GET_STATUS64, &lo64) < 0 || !(lo64.lo_flags & 4)) {
      (void)ioctl(loop_fd, LOOP_CLR_FD, 0);
      goto out;
    }
  }
  r = 0;
out:
  if (r && loop_fd >= 0)
    close(loop_fd);
  if (file_fd >= 0)
    close(file_fd);
  return r ? -1 : loop_fd;
}
```