Messages in this thread | | | Date | Wed, 28 Jul 2004 16:34:40 -0700 | From | Andrew Morton <> | Subject | Re: 2.6.8-rc2-mm1 |
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Johannes Stezenbach <js@convergence.de> wrote: > > This is a hack introduced by someone years ago. The "pointer" is > actually an integer argument, e.g. in include/linux/dvb/audio.h: > > #define AUDIO_SET_MUTE _IO('o', 6) > > actually takes an integer argument (!0 mute, 0 unmute), so one can write > > if (ioctl(fd, AUDIO_SET_MUTE, 1) == -1) > perror("mute");
Is it a boolean argument?
If so, we could change the code to do
parg = (void *)(arg ? 1 : 0);
so if someone dereferences it they'll get a nice oops. - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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