Disable ASLR on macOS for dylib include those loaded with `dlopen`

load_wrapper.cc

#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <spawn.h>
#include <sys/wait.h>
#include <string.h>

/* ASLR disabling magic constant from Apple LLDB source code
   https://opensource.apple.com/source/lldb/lldb-76/tools/darwin-debug/darwin-debug.cpp
*/
#ifndef _POSIX_SPAWN_DISABLE_ASLR
#define _POSIX_SPAWN_DISABLE_ASLR 0x0100
#endif


int main(int argc, char *argv[]) {
    pid_t pid;
    int status;
    // 要执行的程序路径
    const char *binaryPath = "/path/to/program";

	argv[0] = (char *)binaryPath;

    // Prepare envs 
    char *envp[] = {
        "DYLD_INSERT_LIBRARIES=/path/to/your_dlopened_dylib:/path/to/your_second_dlopened_dylib",
        NULL
    };


    posix_spawnattr_t p_attr;

    /* set magic constant to disable ASLR */
    posix_spawnattr_init(&p_attr);    
    posix_spawnattr_setflags(&p_attr, _POSIX_SPAWN_DISABLE_ASLR);
    
    status = posix_spawnp(&pid, argv[0], NULL, &p_attr, argv, envp);
    if(status == 0) {	
      /* wait for end */
      if (waitpid(pid, &status,  WUNTRACED) != -1) {

        /* normal case, just exit */
        if (WIFEXITED(status)) {
        /* return original exit code */
        return WEXITSTATUS(status);
        }
        /* abnormal cases */
        else if (WIFSIGNALED(status)) {
        fprintf(stderr, "%s SIGNALED by signal %d\n", argv[0], WTERMSIG(status));
        return -1;
        }
        else if (WIFSTOPPED(status)) {
        fprintf(stderr, "%s STOPPED by signal %d\n", argv[0], WSTOPSIG(status));
        return -1;
        }
        else {
        fprintf(stderr, "%s waitpid unknown status %d\n", argv[0], status);
        return -1;
        }
      }
      else {
        perror("waitpid");
        return -1;
      }
    }
    else {
		  fprintf(stderr, "posix_spawn: %s\n", strerror(status));
		  return -1;
    }
    return -1;
}