#include "git-compat-util.h"

#ifdef OPEN_RETURNS_EINTR

#undef open

int git_open_with_retry(const char *path, int flags, ...)

{

  mode_t mode = 0;

  int ret;

  /*

   * Also O_TMPFILE would take a mode, but it isn't defined everywhere.

   * And anyway, we don't use it in our code base.

   */

  if (flags & O_CREAT) {

    va_list ap;

    va_start(ap, flags);

    mode = va_arg(ap, int);

    va_end(ap);

  }

  do {

    ret = open(path, flags, mode);

  } while (ret < 0 && errno == EINTR);

  return ret;

}

#endif

int git_open_cloexec(const char *name, int flags)

{

  int fd;

  static int o_cloexec = O_CLOEXEC;

  fd = open(name, flags | o_cloexec);

  if ((o_cloexec & O_CLOEXEC) && fd < 0 && errno == EINVAL) {

    /* Try again w/o O_CLOEXEC: the kernel might not support it */

    o_cloexec &= ~O_CLOEXEC;

    fd = open(name, flags | o_cloexec);

  }

#if defined(F_GETFD) && defined(F_SETFD) && defined(FD_CLOEXEC)

  {

    static int fd_cloexec = FD_CLOEXEC;

    if (!o_cloexec && 0 <= fd && fd_cloexec) {

      /* Opened w/o O_CLOEXEC?  try with fcntl(2) to add it */

      int flags = fcntl(fd, F_GETFD);

      if (fcntl(fd, F_SETFD, flags | fd_cloexec))

        fd_cloexec = 0;

    }

  }

#endif

  return fd;

}