user: What would the C source look like for the assembly code provided here:

```asm
<main>:
  endbr64
  push   %rbx
  sub    $0x10,%rsp
  mov    %fs:0x28,%rax
  mov    %rax,0x8(%rsp)
  xor    %eax,%eax
  call   <fork@plt>
  mov    %rax,%rbx
  test   %rax,%rax
  js     L16
  je     L100
L146:
  mov    $0x3,%edi
  call   <sleep@plt>
  mov    %rbx,%rdi
  call   <show_pstree@plt>
  lea    0x4(%rsp),%rdi
  call   <wait@plt>
  mov    %rax,%rdi
  mov    0x4(%rsp),%esi
  call   <explain_wait_status@plt>
  mov    0x8(%rsp),%rax
  sub    %fs:0x28,%rax
  jne    L123
  mov    $0x0,%eax
  add    $0x10,%rsp
  pop    %rbx
  ret
L16:
  lea    D94(%rip),%rdi
  call   <perror@plt>
  mov    $0x1,%edi
  call   <exit@plt>
  jmp    L146
L100:
  lea    D115(%rip),%rdi
  call   <printf@plt>
  lea    D120(%rip),%rdi
  call   <change_pname@plt>
  mov    $0x0,%eax
  call   <fork@plt>
  test   %rax,%rax
  js     L153
  je     L54
L42:
  mov    $0x0,%eax
  call   <fork@plt>
  test   %rax,%rax
  js     L3
  je     L143
L83:
  lea    D161(%rip),%rdi
  call   <printf@plt>
  lea    0x4(%rsp),%rbx
  mov    %rbx,%rdi
  call   <wait@plt>
  mov    %rax,%rdi
  mov    0x4(%rsp),%esi
  call   <explain_wait_status@plt>
  mov    %rbx,%rdi
  call   <wait@plt>
  mov    %rax,%rbx
  mov    0x4(%rsp),%esi
  mov    %rax,%rdi
  call   <explain_wait_status@plt>
  lea    D162(%rip),%rdi
  call   <printf@plt>
  mov    $0x10,%edi
  call   <exit@plt>
  jmp    L146
L153:
  lea    D23(%rip),%rdi
  call   <perror@plt>
  mov    $0x1,%edi
  call   <exit@plt>
  jmp    L42
L54:
  lea    D100(%rip),%rdi
  call   <change_pname@plt>
  lea    D51(%rip),%rdi
  call   <printf@plt>
  mov    $0x0,%eax
  call   <fork@plt>
  test   %rax,%rax
  js     L72
  je     L149
L109:
  lea    D176(%rip),%rdi
  call   <printf@plt>
  lea    0x4(%rsp),%rdi
  call   <wait@plt>
  mov    %rax,%rdi
  mov    0x4(%rsp),%esi
  call   <explain_wait_status@plt>
  lea    D124(%rip),%rdi
  call   <printf@plt>
  mov    $0x13,%edi
  call   <exit@plt>
  jmp    L42
L72:
  lea    D113(%rip),%rdi
  call   <perror@plt>
  mov    $0x1,%edi
  call   <exit@plt>
  jmp    L109
L149:
  lea    D130(%rip),%rdi
  call   <change_pname@plt>
  lea    D160(%rip),%rdi
  call   <printf@plt>
  lea    D96(%rip),%rdi
  call   <printf@plt>
  mov    $0xa,%edi
  call   <sleep@plt>
  lea    D48(%rip),%rdi
  call   <printf@plt>
  mov    $0xd,%edi
  call   <exit@plt>
  jmp    L109
L3:
  lea    D23(%rip),%rdi
  call   <perror@plt>
  mov    $0x1,%edi
  call   <exit@plt>
  jmp    L83
L143:
  lea    D183(%rip),%rdi
  call   <change_pname@plt>
  lea    D24(%rip),%rdi
  call   <printf@plt>
  lea    D172(%rip),%rdi
  call   <printf@plt>
  mov    $0xa,%edi
  call   <sleep@plt>
  lea    D62(%rip),%rdi
  call   <printf@plt>
  mov    $0x11,%edi
  call   <exit@plt>
  jmp    L83
L123:
  call   <__stack_chk_fail@plt>
```

tool_calls: name: retrieve_data
arguments: tag: D94
type: string
name: retrieve_data
arguments: tag: D115
type: string
name: retrieve_data
arguments: tag: D120
type: string
name: retrieve_data
arguments: tag: D161
type: string
name: retrieve_data
arguments: tag: D162
type: string
name: retrieve_data
arguments: tag: D23
type: string
name: retrieve_data
arguments: tag: D100
type: string
name: retrieve_data
arguments: tag: D51
type: string
name: retrieve_data
arguments: tag: D176
type: string
name: retrieve_data
arguments: tag: D124
type: string
name: retrieve_data
arguments: tag: D113
type: string
name: retrieve_data
arguments: tag: D130
type: string
name: retrieve_data
arguments: tag: D160
type: string
name: retrieve_data
arguments: tag: D96
type: string
name: retrieve_data
arguments: tag: D48
type: string
name: retrieve_data
arguments: tag: D183
type: string
name: retrieve_data
arguments: tag: D24
type: string
name: retrieve_data
arguments: tag: D172
type: string
name: retrieve_data
arguments: tag: D62
type: string

tool: D94: main: fork

tool: D115: A created! 


tool: D120: A

tool: D161: A: Waiting... 


tool: D162: A: Exiting...


tool: D23: A: fork

tool: D100: B

tool: D51: B created! 


tool: D176: B: Waiting... 


tool: D124: B: Exiting...


tool: D113: B: fork

tool: D130: D

tool: D160: D created! 


tool: D96: D: Sleeping...


tool: D48: D: Exiting...


tool: D183: C

tool: D24: C created! 


tool: D172: C: Sleeping...


tool: D62: C: Exiting...


assistant: ```c
int main(void) {
  pid_t pid;
  int status;
  pid = fork();
  if (pid < 0) {
    perror("main: fork");
    exit(1);
  }
  if (pid == 0) {
    printf("A created! \n");
    change_pname("A");
    pid = fork();
    if (pid < 0) {
      perror("A: fork");
      exit(1);
    }
    if (pid == 0) {
      change_pname("B");
      printf("B created! \n");
      pid = fork();
      if (pid < 0) {
        perror("B: fork");
        exit(1);
      }
      if (pid == 0) {
        change_pname("D");
        printf("D created! \n");
        printf("D: Sleeping...\n");
        sleep(10);
        printf("D: Exiting...\n");
        exit(13);
      }
      printf("B: Waiting... \n");
      pid = wait(&status);
      explain_wait_status(pid, status);
      printf("B: Exiting...\n");
      exit(19);
    }
    pid = fork();
    if (pid < 0) {
      perror("A: fork");
      exit(1);
    }
    if (pid == 0) {
      change_pname("C");
      printf("C created! \n");
      printf("C: Sleeping...\n");
      sleep(10);
      printf("C: Exiting...\n");
      exit(17);
    }
    printf("A: Waiting... \n");
    pid = wait(&status);
    explain_wait_status(pid, status);
    pid = wait(&status);
    explain_wait_status(pid, status);
    printf("A: Exiting...\n");
    exit(16);
  }
  sleep(3);
  show_pstree(pid);
  pid = wait(&status);
  explain_wait_status(pid, status);
  return 0;
}
```