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

```asm
<install_rmkdir>:
  endbr64
  push   %rbp
  mov    %rsp,%rbp
  sub    $0x450,%rsp
  mov    %rdi,-0x448(%rbp)
  mov    %esi,-0x44c(%rbp)
  mov    %fs:0x28,%rax
  mov    %rax,-0x8(%rbp)
  xor    %eax,%eax
  movl   $0x400,-0x42c(%rbp)
  movl   $0x0,-0x428(%rbp)
  movl   $0x0,-0x424(%rbp)
  mov    -0x448(%rbp),%rax
  mov    %rax,%rdi
  call   <strlen@plt>
  mov    %eax,-0x434(%rbp)
  mov    -0x448(%rbp),%rax
  mov    %rax,-0x420(%rbp)
  cmpl   $0x3ff,-0x434(%rbp)
  jbe    L142
  mov    D11(%rip),%rax
  mov    (%rax),%rdx
  mov    D55(%rip),%rax
  mov    %rdx,(%rax)
  mov    $0x0,%eax
  jmp    L87
L142:
  cmpl   $0x0,-0x434(%rbp)
  je     L35
  mov    -0x420(%rbp),%rax
  mov    $0x2f,%esi
  mov    %rax,%rdi
  call   <strchr@plt>
  mov    %rax,-0x418(%rbp)
  cmpq   $0x0,-0x418(%rbp)
  jne    L21
  mov    -0x434(%rbp),%eax
  mov    %eax,-0x430(%rbp)
  movl   $0x1,-0x424(%rbp)
  jmp    L176
L21:
  mov    -0x418(%rbp),%rax
  sub    -0x420(%rbp),%rax
  mov    %eax,-0x430(%rbp)
L176:
  mov    -0x430(%rbp),%eax
  add    $0x1,%eax
  cmp    %eax,-0x42c(%rbp)
  jbe    L175
  mov    -0x428(%rbp),%eax
  lea    -0x410(%rbp),%rdx
  lea    (%rdx,%rax,1),%rcx
  mov    -0x430(%rbp),%edx
  mov    -0x420(%rbp),%rax
  mov    %rax,%rsi
  mov    %rcx,%rdi
  call   <memcpy@plt>
  mov    -0x430(%rbp),%eax
  add    %eax,-0x428(%rbp)
  mov    -0x430(%rbp),%eax
  sub    %eax,-0x42c(%rbp)
  mov    -0x428(%rbp),%eax
  movb   $0x2f,-0x410(%rbp,%rax,1)
  addl   $0x1,-0x428(%rbp)
  subl   $0x1,-0x42c(%rbp)
  mov    -0x428(%rbp),%eax
  movb   $0x0,-0x410(%rbp,%rax,1)
  mov    -0x44c(%rbp),%edx
  lea    -0x410(%rbp),%rax
  mov    %edx,%esi
  mov    %rax,%rdi
  call   <install_mkdir@plt>
  cmp    $0xffffffff,%eax
  jne    L61
  cmpl   $0x0,-0x424(%rbp)
  jne    L14
  mov    D55(%rip),%rax
  mov    (%rax),%rdx
  mov    D14(%rip),%rax
  mov    (%rax),%rax
  cmp    %rax,%rdx
  je     L61
  mov    D55(%rip),%rax
  mov    (%rax),%rdx
  mov    D32(%rip),%rax
  mov    (%rax),%rax
  cmp    %rax,%rdx
  je     L61
  mov    $0x0,%eax
  jmp    L87
L14:
  mov    $0x0,%eax
  jmp    L87
L61:
  mov    -0x430(%rbp),%eax
  add    %rax,-0x420(%rbp)
  mov    -0x430(%rbp),%eax
  sub    %eax,-0x434(%rbp)
  cmpl   $0x0,-0x434(%rbp)
  je     L142
  addq   $0x1,-0x420(%rbp)
  subl   $0x1,-0x434(%rbp)
  cmpl   $0x0,-0x434(%rbp)
  je     L8
  jmp    L142
L35:
  nop
  jmp    L60
L175:
  nop
  jmp    L60
L8:
  nop
L60:
  mov    $0x1,%eax
L87:
  mov    -0x8(%rbp),%rdx
  sub    %fs:0x28,%rdx
  je     L82
  call   <__stack_chk_fail@plt>
L82:
  leave
  ret
```

assistant: ```c
int install_rmkdir(const char *dir, unsigned int perm) {
  char path_buf[1024];
  unsigned int len;
  unsigned int pos;
  unsigned int buflen;
  unsigned int bufpos;
  int end;
  const char *ptr;
  char *ptr2;
  buflen = sizeof(path_buf);
  bufpos = 0;
  end = 0;
  len = strlen(dir);
  ptr = dir;
  if (len >= sizeof(path_buf)) {
    errno = ENAMETOOLONG;
    return 0;
  }
  for (;;) {
    if (!len)
      break;
    ptr2 = strchr(ptr, '/');
    if (!ptr2) {
      pos = len;
      end = 1;
    } else
      pos = ptr2 - ptr;
    if (buflen <= (unsigned int)pos + 1)
      break;
    memcpy(path_buf + bufpos, ptr, pos);
    bufpos += pos;
    buflen -= pos;
    path_buf[bufpos] = '/';
    ++bufpos;
    --buflen;
    path_buf[bufpos] = 0;
    if (install_mkdir(path_buf, perm) == -1) {
      if (!end) {
        if (errno != EEXIST && errno != EISDIR)
          return 0;
      } else
        return 0;
    }
    ptr += pos;
    len -= pos;
    if (len) {
      ++ptr;
      --len;
      if (!len)
        break;
    }
  }
  return 1;
}
```