user: 提供的汇编代码用C语言表示会是什么样子:

```asm
<get_file_permissions>:
  endbr64
  push   %rbp
  mov    %rsp,%rbp
  sub    $0x20,%rsp
  mov    %edi,-0x14(%rbp)
  mov    $0xb,%edi
  call   <malloc@plt>
  mov    %rax,-0x8(%rbp)
  mov    -0x14(%rbp),%eax
  mov    %eax,%edi
  call   <S_ISDIR@plt>
  test   %rax,%rax
  je     L21
  mov    $0x64,%edx
  jmp    L122
L21:
  mov    $0x2d,%edx
L122:
  mov    -0x8(%rbp),%rax
  mov    %dl,(%rax)
  mov    -0x14(%rbp),%edx
  mov    D14(%rip),%rax
  mov    (%rax),%eax
  and    %edx,%eax
  test   %eax,%eax
  je     L131
  mov    $0x72,%edx
  jmp    L172
L131:
  mov    $0x2d,%edx
L172:
  mov    -0x8(%rbp),%rax
  add    $0x1,%rax
  mov    %dl,(%rax)
  mov    -0x14(%rbp),%edx
  mov    D77(%rip),%rax
  mov    (%rax),%eax
  and    %edx,%eax
  test   %eax,%eax
  je     L187
  mov    $0x77,%edx
  jmp    L108
L187:
  mov    $0x2d,%edx
L108:
  mov    -0x8(%rbp),%rax
  add    $0x2,%rax
  mov    %dl,(%rax)
  mov    -0x14(%rbp),%edx
  mov    D48(%rip),%rax
  mov    (%rax),%eax
  and    %edx,%eax
  test   %eax,%eax
  je     L16
  mov    $0x78,%edx
  jmp    L109
L16:
  mov    $0x2d,%edx
L109:
  mov    -0x8(%rbp),%rax
  add    $0x3,%rax
  mov    %dl,(%rax)
  mov    -0x14(%rbp),%edx
  mov    D50(%rip),%rax
  mov    (%rax),%eax
  and    %edx,%eax
  test   %eax,%eax
  je     L192
  mov    $0x72,%edx
  jmp    L100
L192:
  mov    $0x2d,%edx
L100:
  mov    -0x8(%rbp),%rax
  add    $0x4,%rax
  mov    %dl,(%rax)
  mov    -0x14(%rbp),%edx
  mov    D22(%rip),%rax
  mov    (%rax),%eax
  and    %edx,%eax
  test   %eax,%eax
  je     L9
  mov    $0x77,%edx
  jmp    L118
L9:
  mov    $0x2d,%edx
L118:
  mov    -0x8(%rbp),%rax
  add    $0x5,%rax
  mov    %dl,(%rax)
  mov    -0x14(%rbp),%edx
  mov    D19(%rip),%rax
  mov    (%rax),%eax
  and    %edx,%eax
  test   %eax,%eax
  je     L59
  mov    $0x78,%edx
  jmp    L44
L59:
  mov    $0x2d,%edx
L44:
  mov    -0x8(%rbp),%rax
  add    $0x6,%rax
  mov    %dl,(%rax)
  mov    -0x14(%rbp),%edx
  mov    D65(%rip),%rax
  mov    (%rax),%eax
  and    %edx,%eax
  test   %eax,%eax
  je     L38
  mov    $0x72,%edx
  jmp    L120
L38:
  mov    $0x2d,%edx
L120:
  mov    -0x8(%rbp),%rax
  add    $0x7,%rax
  mov    %dl,(%rax)
  mov    -0x14(%rbp),%edx
  mov    D15(%rip),%rax
  mov    (%rax),%eax
  and    %edx,%eax
  test   %eax,%eax
  je     L70
  mov    $0x77,%edx
  jmp    L12
L70:
  mov    $0x2d,%edx
L12:
  mov    -0x8(%rbp),%rax
  add    $0x8,%rax
  mov    %dl,(%rax)
  mov    -0x14(%rbp),%edx
  mov    D9(%rip),%rax
  mov    (%rax),%eax
  and    %edx,%eax
  test   %eax,%eax
  je     L55
  mov    $0x78,%edx
  jmp    L158
L55:
  mov    $0x2d,%edx
L158:
  mov    -0x8(%rbp),%rax
  add    $0x9,%rax
  mov    %dl,(%rax)
  mov    -0x8(%rbp),%rax
  add    $0xa,%rax
  movb   $0x0,(%rax)
  mov    -0x8(%rbp),%rax
  leave
  ret
```

assistant: ```c
char *get_file_permissions(struct stat buf) {
  char *permissions = (char *)malloc(11 * sizeof(char));
  permissions[0] = S_ISDIR(buf.st_mode) ? 'd' : '-';
  permissions[1] = buf.st_mode & S_IRUSR ? 'r' : '-';
  permissions[2] = buf.st_mode & S_IWUSR ? 'w' : '-';
  permissions[3] = buf.st_mode & S_IXUSR ? 'x' : '-';
  permissions[4] = buf.st_mode & S_IRGRP ? 'r' : '-';
  permissions[5] = buf.st_mode & S_IWGRP ? 'w' : '-';
  permissions[6] = buf.st_mode & S_IXGRP ? 'x' : '-';
  permissions[7] = buf.st_mode & S_IROTH ? 'r' : '-';
  permissions[8] = buf.st_mode & S_IWOTH ? 'w' : '-';
  permissions[9] = buf.st_mode & S_IXOTH ? 'x' : '-';
  permissions[10] = '\0';
  return permissions;
}
```