File::Stat#setuid?

() -> bool

stat.setuid? → true or false

static VALUE
rb_stat_suid(VALUE obj)
{
#ifdef S_ISUID
    if (get_stat(obj)->st_mode & S_ISUID) return Qtrue;
#endif
    return Qfalse;
}

Returns true if stat has the set-user-id permission bit set, false if it doesn’t or if the operating system doesn’t support this feature.

Example

File.stat("/bin/su").setuid?   #=> true

See also #setgid? #size #readable_real? #size? also in 4.1 · 4.0 · 3.3 · 3.2 · 3.1 · 3.0