text: // Licensed to the .NET Foundation under one or more agreements.
  // The .NET Foundation licenses this file to you under the MIT license.
  
  // Contains wrappers for functions whose required headers conflict with the PAL
  
  #include <sys/file.h>
  #include <sys/stat.h>
  #include <sys/types.h>
  
  #include <fcntl.h>
  #include <signal.h>
  #include <stdio.h>
  #include <string.h>
  #include <unistd.h>
  #include <minipal/utils.h>
  
  #undef PAGE_SIZE
  #define PAGE_SIZE (4096)
  
  auto test_strcpy = strcpy;
  auto test_strcmp = strcmp;
  auto test_strlen = strlen;
  auto test_sprintf = sprintf;
  auto test_sscanf = sscanf;
  auto test_close = close;
  auto test_unlink = unlink;
  
  unsigned int test_getpid()
  {
      return getpid();
  }
  
  int test_kill(unsigned int pid)
  {
      return kill(pid, SIGKILL);
  }
  
  bool TestFileExists(const char *path)
  {
      int fd = open(path, O_RDWR);
      if (fd == -1)
          return false;
      close(fd);
      return true;
  }
  
  bool WriteHeaderInfo(const char *path, char sharedMemoryType, char version, int *fdRef)
  {
      int fd = open(path, O_CREAT | O_RDWR, S_IRUSR | S_IWUSR | S_IRGRP | S_IWGRP | S_IROTH | S_IWOTH);
      if (fd == -1)
          return false;
      *fdRef = fd;
      if (ftruncate(fd, PAGE_SIZE) != 0)
          return false;
      if (lseek(fd, 0, SEEK_SET) != 0)
          return false;
  
      // See SharedMemorySharedDataHeader for format
      char buffer[] = {sharedMemoryType, version};
      if (write(fd, buffer, ARRAY_SIZE(buffer)) != ARRAY_SIZE(buffer))
          return false;
  
      return flock(fd, LOCK_SH | LOCK_NB) == 0;
  }
  