method

blockdev?

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blockdev?(p1) public

Returns true if the named file is a block device.

/*
 * call-seq:
 *   File.blockdev?(file_name)   =>  true or false
 *
 * Returns <code>true</code> if the named file is a block device.
 */

static VALUE
test_b(obj, fname)
    VALUE obj, fname;
{
#ifndef S_ISBLK
#   ifdef S_IFBLK
#       define S_ISBLK(m) ((m & S_IFMT) == S_IFBLK)
#   else
#       define S_ISBLK(m) (0)  /* anytime false */
#   endif
#endif

#ifdef S_ISBLK
    struct stat st;

    if (rb_stat(fname, &st) < 0) return Qfalse;
    if (S_ISBLK(st.st_mode)) return Qtrue;

#endif
    return Qfalse;
}

blockdev?

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