user: 请从给定的汇编指令推导出C源代码:

```asm
<main>:
  endbr64
  push   %r15
  push   %r14
  push   %r13
  push   %r12
  push   %rbp
  push   %rbx
  sub    $0x1000,%rsp
  orq    $0x0,(%rsp)
  sub    $0x1000,%rsp
  orq    $0x0,(%rsp)
  sub    $0x748,%rsp
  mov    %rsi,%rbx
  mov    %fs:0x28,%rax
  mov    %rax,0x2738(%rsp)
  xor    %eax,%eax
  cmp    $0x2,%edi
  jle    L28
L143:
  movq   $0x0,0x20(%rsp)
  movq   $0x0,0x28(%rsp)
  lea    0x30(%rsp),%rdi
  mov    $0x2700,%edx
  mov    $0x0,%esi
  call   <memset@plt>
  mov    0x8(%rbx),%rdi
  call   <atoi@plt>
  mov    %eax,%r13d
  lea    0x0(,%rax,4),%edi
  call   <malloc@plt>
  mov    %rax,(%rsp)
  mov    0x10(%rbx),%r14
  mov    %r14,%rdi
  call   <strlen@plt>
  movw   $0x2f,(%r14,%rax,1)
  mov    0x10(%rbx),%rdi
  call   <opendir@plt>
  mov    %rax,%rbx
  lea    D125(%rip),%rsi
  lea    D5(%rip),%rdi
  call   <fopen@plt>
  mov    %rax,%rbp
  lea    D175(%rip),%r12
L75:
  mov    %rbx,%rdi
  call   <readdir@plt>
  test   %rax,%rax
  je     L82
  mov    (%rax),%rdx
  mov    %r12,%rsi
  mov    %rbp,%rdi
  call   <fprintf@plt>
  jmp    L75
L28:
  lea    D18(%rip),%rdi
  call   <perror@plt>
  mov    $0x0,%edi
  call   <exit@plt>
  jmp    L143
L82:
  mov    %rbx,%rdi
  call   <closedir@plt>
  mov    %rbp,%rdi
  call   <fclose@plt>
  lea    D28(%rip),%rsi
  lea    D5(%rip),%rdi
  call   <fopen@plt>
  mov    %rax,%rbp
  mov    %r13d,%eax
  mov    (%rsp),%rcx
  lea    (%rcx,%rax,4),%rax
  mov    %rax,0x8(%rsp)
  movq   $0x1,0x10(%rsp)
  lea    D82(%rip),%r12
  lea    0x20(%rsp),%rbx
  lea    D71(%rip),%r15
  jmp    L31
L77:
  movb   $0x0,0x20(%rsp,%rdx,1)
L43:
  mov    %r12,%rsi
  mov    %rbx,%rdi
  call   <strcmp@plt>
  test   %rax,%rax
  jne    L178
L31:
  mov    %rbp,%rdx
  mov    $0x2710,%esi
  mov    %rbx,%rdi
  call   <fgets@plt>
  test   %rax,%rax
  je     L149
  mov    %rbx,%rdi
  call   <strlen@plt>
  sub    $0x1,%eax
  movslq %eax,%rdx
  cmpb   $0xa,0x20(%rsp,%rdx,1)
  jne    L43
  jmp    L77
L178:
  mov    %r15,%rsi
  mov    %rbx,%rdi
  call   <strcmp@plt>
  test   %rax,%rax
  je     L31
  call   <fork@plt>
  test   %eax,%eax
  je     L62
  mov    (%rsp),%rsi
  mov    0x10(%rsp),%rcx
  mov    %eax,-0x4(%rsi,%rcx,4)
  cmp    %ecx,%r13d
  jle    L166
L91:
  addq   $0x1,0x10(%rsp)
  jmp    L31
L62:
  lea    0x20(%rsp),%rsi
  mov    %r14,%rdi
  call   <strcat@plt>
  sub    $0x8,%rsp
  push   $0x0
  push   %r14
  push   %r14
  lea    D189(%rip),%r9
  lea    D201(%rip),%r8
  lea    D140(%rip),%rcx
  lea    D40(%rip),%rdx
  lea    D113(%rip),%rsi
  lea    D19(%rip),%rdi
  call   <execlp@plt>
  add    $0x20,%rsp
  lea    D195(%rip),%rdi
  call   <printf@plt>
  mov    $0x1,%eax
  jmp    L163
L56:
  mov    $0x0,%edx
  mov    $0x0,%esi
  mov    0x18(%rsp),%rax
  mov    (%rax),%edi
  call   <waitpid@plt>
  addq   $0x4,0x18(%rsp)
L128:
  mov    0x8(%rsp),%rcx
  cmp    %rcx,0x18(%rsp)
  jne    L56
  jmp    L91
L166:
  mov    (%rsp),%rax
  mov    %rax,0x18(%rsp)
  jmp    L128
L149:
  mov    %rbp,%rdi
  call   <fclose@plt>
  sub    $0x8,%rsp
  push   $0x0
  lea    D5(%rip),%rax
  push   %rax
  push   %rax
  lea    D189(%rip),%r9
  lea    D201(%rip),%r8
  lea    D140(%rip),%rcx
  lea    D40(%rip),%rdx
  lea    D113(%rip),%rsi
  lea    D19(%rip),%rdi
  call   <execlp@plt>
  add    $0x20,%rsp
  mov    $0x0,%eax
L163:
  mov    0x2738(%rsp),%rdx
  sub    %fs:0x28,%rdx
  jne    L135
  add    $0x2748,%rsp
  pop    %rbx
  pop    %rbp
  pop    %r12
  pop    %r13
  pop    %r14
  pop    %r15
  ret
L135:
  call   <__stack_chk_fail@plt>
```

tool_calls: name: read_data
arguments: data_tag: D125
datatype: string
name: read_data
arguments: data_tag: D5
datatype: string
name: read_data
arguments: data_tag: D175
datatype: string
name: read_data
arguments: data_tag: D18
datatype: string
name: read_data
arguments: data_tag: D28
datatype: string
name: read_data
arguments: data_tag: D82
datatype: string
name: read_data
arguments: data_tag: D71
datatype: string
name: read_data
arguments: data_tag: D189
datatype: string
name: read_data
arguments: data_tag: D201
datatype: string
name: read_data
arguments: data_tag: D140
datatype: string
name: read_data
arguments: data_tag: D40
datatype: string
name: read_data
arguments: data_tag: D113
datatype: string
name: read_data
arguments: data_tag: D19
datatype: string
name: read_data
arguments: data_tag: D195
datatype: string

tool: D125: w+

tool: D5: list.txt

tool: D175: %s


tool: D18: The number of args is wrong!


tool: D28: r

tool: D82: .

tool: D71: ..

tool: D189: -o

tool: D201: -u

tool: D140: 1

tool: D40: -k

tool: D113: -n

tool: D19: sort

tool: D195: error2


assistant: ```c
int main(int argc, char *argv[]) {
  if (argc < 3) {
    perror("The number of args is wrong!\n");
    exit(0);
  }
  int pid = 0;
  int len = 0;
  char buf[10000] = {0};
  int max = atoi(argv[1]);
  int *maxptr = malloc(sizeof(int) * max);
  int i = 0;
  char *dirname = strcat(argv[2], "/");
  DIR *dir;
  FILE *fp;
  struct dirent *ptr;
  dir = opendir(argv[2]);
  fp = fopen("list.txt", "w+");
  while ((ptr = readdir(dir)) != NULL) {
    fprintf(fp, "%s\n", ptr->d_name);
  }
  closedir(dir);
  fclose(fp);
  fp = fopen("list.txt", "r");
  while (fgets(buf, 10000, fp) != NULL) {
    len = (int)strlen(buf) - 1;
    if ('\n' == buf[len]) {
      buf[len] = '\0';
    }
    if ((strcmp(buf, ".") != 0) && (strcmp(buf, "..") != 0)) {
      pid = fork();
      if (0 == pid) {
        execlp("sort", "-n", "-k", "1", "-u", "-o", strcat(dirname, buf), dirname, (char *)NULL);
        printf("error2\n");
        return 1;
      } else {
        maxptr[i++] = pid;
      }
      if (i >= max) {
        for (int j = 0; j != max; ++j) {
          waitpid(maxptr[j], NULL, 0);
        }
      }
    }
  }
  fclose(fp);
  execlp("sort", "-n", "-k", "1", "-u", "-o", "list.txt", "list.txt", (char *)NULL);
  return 0;
}
```