Method: File::Stat#writable?

Defined in:
file.c

#writable? ⇒ Boolean

Returns true if stat is writable by the effective user id of this process.

File.stat("testfile").writable?   #=> true

Returns:

  • (Boolean) 


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# File 'file.c', line 6020

static VALUE
rb_stat_w(VALUE obj)
{
    struct stat *st = get_stat(obj);

#ifdef USE_GETEUID
    if (geteuid() == 0) return Qtrue;
#endif
#ifdef S_IWUSR
    if (rb_stat_owned(obj))
        return RBOOL(st->st_mode & S_IWUSR);
#endif
#ifdef S_IWGRP
    if (rb_stat_grpowned(obj))
        return RBOOL(st->st_mode & S_IWGRP);
#endif
#ifdef S_IWOTH
    if (!(st->st_mode & S_IWOTH)) return Qfalse;
#endif
    return Qtrue;
}