Server : Apache/2.4.41 (Ubuntu) System : Linux absol.cf 5.4.0-198-generic #218-Ubuntu SMP Fri Sep 27 20:18:53 UTC 2024 x86_64 User : www-data ( 33) PHP Version : 7.4.33 Disable Function : pcntl_alarm,pcntl_fork,pcntl_waitpid,pcntl_wait,pcntl_wifexited,pcntl_wifstopped,pcntl_wifsignaled,pcntl_wifcontinued,pcntl_wexitstatus,pcntl_wtermsig,pcntl_wstopsig,pcntl_signal,pcntl_signal_get_handler,pcntl_signal_dispatch,pcntl_get_last_error,pcntl_strerror,pcntl_sigprocmask,pcntl_sigwaitinfo,pcntl_sigtimedwait,pcntl_exec,pcntl_getpriority,pcntl_setpriority,pcntl_async_signals,pcntl_unshare, Directory :  /usr/share/emscripten/tests/unistd/

Upload File : current_dir [ Writeable ] document_root [ Writeable ]

#include <stdio.h>
#include <errno.h>
#include <unistd.h>
#include <emscripten.h>

int main() {
  EM_ASM(
    FS.mkdir('working');
#if NODEFS
    FS.mount(NODEFS, { root: '.' }, 'working');
#endif
    FS.chdir('working');
    FS.symlink('../test/../there!', 'link');
    FS.writeFile('file', 'test');
    FS.mkdir('folder');
  );

  char* files[] = {"link", "file", "folder"};
  char buffer[256] = {0};

  for (int i = 0; i < sizeof files / sizeof files[0]; i++) {
    printf("readlink(%s)\n", files[i]);
    printf("ret: %d\n", readlink(files[i], buffer, 256));
    printf("errno: %d\n", errno);
    printf("result: %s\n\n", buffer);
    errno = 0;
  }

  printf("symlink/overwrite\n");
  printf("ret: %d\n", symlink("new-nonexistent-path", "link"));
  printf("errno: %d\n\n", errno);
  errno = 0;

  printf("symlink/normal\n");
  printf("ret: %d\n", symlink("new-nonexistent-path", "folder/link"));
  printf("errno: %d\n", errno);
  errno = 0;

  printf("readlink(created link)\n");
  printf("ret: %d\n", readlink("folder/link", buffer, 256));
  printf("errno: %d\n", errno);
  printf("result: %s\n\n", buffer);
  errno = 0;

  printf("readlink(short buffer)\n");
  printf("ret: %d\n", readlink("link", buffer, 4));
  printf("errno: %d\n", errno);
  printf("result: %s\n", buffer);
  errno = 0;

  return 0;
}