コード例 #1
0
ファイル: sysfile.c プロジェクト: zhaohuakai/ucore_plus
int sysfile_linux_fstat64(int fd, struct linux_stat64 __user * buf)
{
	struct mm_struct *mm = pls_read(current)->mm;
	int ret;
	struct stat __local_stat, *kstat = &__local_stat;
	if ((ret = file_fstat(fd, kstat)) != 0) {
		return -1;
	}
	struct linux_stat64 *kls = kmalloc(sizeof(struct linux_stat64));
	if (!kls) {
		return -1;
	}
	memset(kls, 0, sizeof(struct linux_stat64));
	kls->st_ino = 1;
	/* ucore never check access permision */
	kls->st_mode = kstat->st_mode | 0777;
	kls->st_nlink = kstat->st_nlinks;
	kls->st_blksize = 512;
	kls->st_blocks = kstat->st_blocks;
	kls->st_size = kstat->st_size;

	ret = 0;
	lock_mm(mm);
	{
		if (!copy_to_user(mm, buf, kls, sizeof(struct linux_stat64))) {
			ret = -1;
		}
	}
	unlock_mm(mm);
	kfree(kls);
	return ret;
}
コード例 #2
0
ファイル: wtap.c プロジェクト: wireshark/wireshark
/*
 * Do an fstat on the file.
 */
int
wtap_fstat(wtap *wth, ws_statb64 *statb, int *err)
{
	if (file_fstat((wth->fh == NULL) ? wth->random_fh : wth->fh,
	    statb, err) == -1)
		return -1;
	return 0;
}
コード例 #3
0
ファイル: wtap.c プロジェクト: wireshark/wireshark
/*
 * Return the size of the file, as reported by the OS.
 * (gint64, in case that's 64 bits.)
 */
gint64
wtap_file_size(wtap *wth, int *err)
{
	ws_statb64 statb;

	if (file_fstat((wth->fh == NULL) ? wth->random_fh : wth->fh,
	    &statb, err) == -1)
		return -1;
	return statb.st_size;
}
コード例 #4
0
ファイル: fs_fstat.c プロジェクト: dagar/NuttX
int fstat(int fd, FAR struct stat *buf)
{
  FAR struct file *filep;
  int ret;

  /* Did we get a valid file descriptor? */

  if ((unsigned int)fd >= CONFIG_NFILE_DESCRIPTORS)
    {
#if CONFIG_NSOCKET_DESCRIPTORS > 0
      /* Let the networking logic handle the fstat() */

      ret = net_fstat(fd, buf);
      if (ret < 0)
        {
          goto errout;
        }

      return OK;
#else
      /* No networking... it is just a bad descriptor */

      ret = -EBADF;
      goto errout;
#endif
    }

  /* The descriptor is in a valid range for a file descriptor... do the
   * fstat.  First, get the file structure.  Note that on failure,
   * fs_getfilep() will set the errno variable.
   */

  ret = fs_getfilep(fd, &filep);
  if (ret < 0)
    {
      goto errout;
    }

  /* Perform the fstat operation */

  ret = file_fstat(filep, buf);

  /* Check if the fstat operation was successful */

  if (ret >= 0)
    {
      /* Successfully fstat'ed the file */

      return OK;
    }

errout:
  set_errno(-ret);
  return ERROR;
}
コード例 #5
0
ファイル: sysfile.c プロジェクト: wwffcc/spoc_discussions
/* sysfile_fstat - stat file */
int
sysfile_fstat(int fd, struct stat *__stat) {
    struct mm_struct *mm = current->mm;
    int ret;
    struct stat __local_stat, *stat = &__local_stat;
    if ((ret = file_fstat(fd, stat)) != 0) {
        return ret;
    }

    lock_mm(mm);
    {
        if (!copy_to_user(mm, __stat, stat, sizeof(struct stat))) {
            ret = -E_INVAL;
        }
    }
    unlock_mm(mm);
    return ret;
}