From patchwork Sat Sep 8 14:28:09 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Arnd Bergmann X-Patchwork-Id: 10593087 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 6716C13AC for ; Sat, 8 Sep 2018 14:30:21 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 56AB42A3D3 for ; Sat, 8 Sep 2018 14:30:21 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 4AD812A427; Sat, 8 Sep 2018 14:30:21 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-7.9 required=2.0 tests=BAYES_00,MAILING_LIST_MULTI, RCVD_IN_DNSWL_HI,UPPERCASE_50_75 autolearn=unavailable version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 984272A3D3 for ; Sat, 8 Sep 2018 14:30:20 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726709AbeIHTQS (ORCPT ); Sat, 8 Sep 2018 15:16:18 -0400 Received: from mout.kundenserver.de ([212.227.126.130]:53150 "EHLO mout.kundenserver.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726351AbeIHTQS (ORCPT ); Sat, 8 Sep 2018 15:16:18 -0400 Received: from wuerfel.lan ([109.193.40.16]) by mrelayeu.kundenserver.de (mreue011 [212.227.15.129]) with ESMTPA (Nemesis) id 1MJEIl-1gHY0H0BsB-00KiV7; Sat, 08 Sep 2018 16:29:46 +0200 From: Arnd Bergmann To: viro@zeniv.linux.org.uk, Jeff Dike , Richard Weinberger , Jaroslav Kysela , Takashi Iwai , Arnd Bergmann Cc: linux-um@lists.infradead.org, linux-kernel@vger.kernel.org, linux-fsdevel@vger.kernel.org, alsa-devel@alsa-project.org Subject: [PATCH 03/11] compat_ioctl: remove translation for sound ioctls Date: Sat, 8 Sep 2018 16:28:09 +0200 Message-Id: <20180908142837.2819693-3-arnd@arndb.de> X-Mailer: git-send-email 2.18.0 In-Reply-To: <20180908142837.2819693-1-arnd@arndb.de> References: <20180908142837.2819693-1-arnd@arndb.de> X-Provags-ID: V03:K1:/ZZEpM3KA5ysIhGr/2Vm0fvqLLI1DZFXkHUEyO2IPY5ksptOeM/ PzsraGAeljHVM91wP+fwCQk6TS1oIcXNTe7s+GVGiV3UEpKtLEC0ahWyROQzZChzruuw2WC rkX57/fX/L8DJdmGe5SJ4n7I1JN1aYFPSYmiGj88fXJsLqXKWPgrdPn/EZX7bqjnKaMUq5P 8KeHbuEdLucTUCv8qK7UA== X-UI-Out-Filterresults: notjunk:1;V01:K0:CDfBQa5MfUQ=:okIMhwnIvlRBjsjgdKzLys 6JRDISEglMpOk72eAlqHtj217XJtF/tTmoWZATbmQt4ddibV1R1RQ5W64Pzqpi1pS7tcgBUWr WwSTco9pga74KyoXzdCaVv4DuZ5u5cSG1vm6H2dUqJIQ8xHfP12DvcMgiGgi2Wtm2QLmtjPDp W36Nsu+O/kXPihn0ZBWGcZeunSpEuvu1F/ZPRjfWPrbKyB9I/yildSQUbGLtZBUmGIsMIE1I4 D+EYsVaIZAVMtylWzqdmFeV1QTMxW0Wg+q0TtQEgkuQFEFgsWlOcVwXQYYIVUP12P1TpiHHvz /viacwEZHlthbcQULSRuchfS9Y0+wFKfpt53pD310tsCsGr955H72WH+Xzovo2IYo86ku6Wp3 fpxvXyPDd9AJ0w3bhzGONVoTGqrOA2B18mv7i0uOHnpD0QvQWucVcCptXCK5EOO4GIsOFGMFH 4eARylgtwHnchrAhUVsu0WRfT7VHRdHbnWpi7my69H4TKDhQ7MlO0b5hOrNHfi78m7vwh93W6 aPwVIcjtwh8g/whHUvkeuTSLcVH/0VxZJYDKXzbaeA3Lgsj1DPM1UAU40j5Y7SOXjh6alUI+W gVBaonhoGgfMKquZsuDvOwsUlzmzAtl2mREicwPaFpjLSRddZJ1KnT4Mz0ZO4UgZar5+fbZWf 9qLzGAznrrg3Y7mQIx0rDkav/5uE8MfAVBZBAfFDvPAccm7TBE05yMFSO+neL7rgu1dA= Sender: linux-fsdevel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-fsdevel@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP The SNDCTL_* and SOUND_* commands are the old OSS user interface. I checked all the sound ioctl commands listed in fs/compat_ioctl.c to see if we still need the translation handlers. Here is what I found: - sound/oss/ is (almost) gone from the kernel, this is what actually needed all the translations - The ALSA emulation for OSS correctly handles all compat_ioctl commands already. - sound/oss/dmasound/ is the last holdout of the original OSS code, this is only used on arch/m68k, which has no 64-bit mode and hence needs no compat handlers - arch/um/drivers/hostaudio_kern.c may run in 64-bit mode with 32-bit x86 user space underneath it. This rare corner case is the only one that still needs the compat handlers. By adding a simple redirect of .compat_ioctl to .unlocked_ioctl in the UML driver, we can remove all the COMPATIBLE_IOCTL() annotations without a change in functionality. For completeness, I'm adding the same thing to the dmasound file, knowing that it makes no difference. The compat_ioctl list contains one comment about SNDCTL_DSP_MAPINBUF and SNDCTL_DSP_MAPOUTBUF, which actually would need a translation handler if implemented. However, the native implementation just returns -EINVAL, so we don't care. Signed-off-by: Arnd Bergmann --- arch/um/drivers/hostaudio_kern.c | 1 + fs/compat_ioctl.c | 157 ----------------------------- sound/core/oss/pcm_oss.c | 4 + sound/oss/dmasound/dmasound_core.c | 2 + 4 files changed, 7 insertions(+), 157 deletions(-) diff --git a/arch/um/drivers/hostaudio_kern.c b/arch/um/drivers/hostaudio_kern.c index 7f9dbdbc4eb7..0278a642a622 100644 --- a/arch/um/drivers/hostaudio_kern.c +++ b/arch/um/drivers/hostaudio_kern.c @@ -298,6 +298,7 @@ static const struct file_operations hostaudio_fops = { .write = hostaudio_write, .poll = hostaudio_poll, .unlocked_ioctl = hostaudio_ioctl, + .compat_ioctl = hostaudio_ioctl, .mmap = NULL, .open = hostaudio_open, .release = hostaudio_release, diff --git a/fs/compat_ioctl.c b/fs/compat_ioctl.c index c2c73b802fb3..875516658c39 100644 --- a/fs/compat_ioctl.c +++ b/fs/compat_ioctl.c @@ -78,7 +78,6 @@ #include #include -#include #include #include @@ -605,162 +604,6 @@ COMPATIBLE_IOCTL(SG_GET_KEEP_ORPHAN) /* PPP stuff */ COMPATIBLE_IOCTL(PPPIOCGUNIT) COMPATIBLE_IOCTL(PPPIOCGCHAN) -/* Big A */ -/* sparc only */ -/* Big Q for sound/OSS */ -COMPATIBLE_IOCTL(SNDCTL_SEQ_RESET) -COMPATIBLE_IOCTL(SNDCTL_SEQ_SYNC) -COMPATIBLE_IOCTL(SNDCTL_SYNTH_INFO) -COMPATIBLE_IOCTL(SNDCTL_SEQ_CTRLRATE) -COMPATIBLE_IOCTL(SNDCTL_SEQ_GETOUTCOUNT) -COMPATIBLE_IOCTL(SNDCTL_SEQ_GETINCOUNT) -COMPATIBLE_IOCTL(SNDCTL_SEQ_PERCMODE) -COMPATIBLE_IOCTL(SNDCTL_FM_LOAD_INSTR) -COMPATIBLE_IOCTL(SNDCTL_SEQ_TESTMIDI) -COMPATIBLE_IOCTL(SNDCTL_SEQ_RESETSAMPLES) -COMPATIBLE_IOCTL(SNDCTL_SEQ_NRSYNTHS) -COMPATIBLE_IOCTL(SNDCTL_SEQ_NRMIDIS) -COMPATIBLE_IOCTL(SNDCTL_MIDI_INFO) -COMPATIBLE_IOCTL(SNDCTL_SEQ_THRESHOLD) -COMPATIBLE_IOCTL(SNDCTL_SYNTH_MEMAVL) -COMPATIBLE_IOCTL(SNDCTL_FM_4OP_ENABLE) -COMPATIBLE_IOCTL(SNDCTL_SEQ_PANIC) -COMPATIBLE_IOCTL(SNDCTL_SEQ_OUTOFBAND) -COMPATIBLE_IOCTL(SNDCTL_SEQ_GETTIME) -COMPATIBLE_IOCTL(SNDCTL_SYNTH_ID) -COMPATIBLE_IOCTL(SNDCTL_SYNTH_CONTROL) -COMPATIBLE_IOCTL(SNDCTL_SYNTH_REMOVESAMPLE) -/* Big T for sound/OSS */ -COMPATIBLE_IOCTL(SNDCTL_TMR_TIMEBASE) -COMPATIBLE_IOCTL(SNDCTL_TMR_START) -COMPATIBLE_IOCTL(SNDCTL_TMR_STOP) -COMPATIBLE_IOCTL(SNDCTL_TMR_CONTINUE) -COMPATIBLE_IOCTL(SNDCTL_TMR_TEMPO) -COMPATIBLE_IOCTL(SNDCTL_TMR_SOURCE) -COMPATIBLE_IOCTL(SNDCTL_TMR_METRONOME) -COMPATIBLE_IOCTL(SNDCTL_TMR_SELECT) -/* Little m for sound/OSS */ -COMPATIBLE_IOCTL(SNDCTL_MIDI_PRETIME) -COMPATIBLE_IOCTL(SNDCTL_MIDI_MPUMODE) -COMPATIBLE_IOCTL(SNDCTL_MIDI_MPUCMD) -/* Big P for sound/OSS */ -COMPATIBLE_IOCTL(SNDCTL_DSP_RESET) -COMPATIBLE_IOCTL(SNDCTL_DSP_SYNC) -COMPATIBLE_IOCTL(SNDCTL_DSP_SPEED) -COMPATIBLE_IOCTL(SNDCTL_DSP_STEREO) -COMPATIBLE_IOCTL(SNDCTL_DSP_GETBLKSIZE) -COMPATIBLE_IOCTL(SNDCTL_DSP_CHANNELS) -COMPATIBLE_IOCTL(SOUND_PCM_WRITE_FILTER) -COMPATIBLE_IOCTL(SNDCTL_DSP_POST) -COMPATIBLE_IOCTL(SNDCTL_DSP_SUBDIVIDE) -COMPATIBLE_IOCTL(SNDCTL_DSP_SETFRAGMENT) -COMPATIBLE_IOCTL(SNDCTL_DSP_GETFMTS) -COMPATIBLE_IOCTL(SNDCTL_DSP_SETFMT) -COMPATIBLE_IOCTL(SNDCTL_DSP_GETOSPACE) -COMPATIBLE_IOCTL(SNDCTL_DSP_GETISPACE) -COMPATIBLE_IOCTL(SNDCTL_DSP_NONBLOCK) -COMPATIBLE_IOCTL(SNDCTL_DSP_GETCAPS) -COMPATIBLE_IOCTL(SNDCTL_DSP_GETTRIGGER) -COMPATIBLE_IOCTL(SNDCTL_DSP_SETTRIGGER) -COMPATIBLE_IOCTL(SNDCTL_DSP_GETIPTR) -COMPATIBLE_IOCTL(SNDCTL_DSP_GETOPTR) -/* SNDCTL_DSP_MAPINBUF, XXX needs translation */ -/* SNDCTL_DSP_MAPOUTBUF, XXX needs translation */ -COMPATIBLE_IOCTL(SNDCTL_DSP_SETSYNCRO) -COMPATIBLE_IOCTL(SNDCTL_DSP_SETDUPLEX) -COMPATIBLE_IOCTL(SNDCTL_DSP_GETODELAY) -COMPATIBLE_IOCTL(SNDCTL_DSP_PROFILE) -COMPATIBLE_IOCTL(SOUND_PCM_READ_RATE) -COMPATIBLE_IOCTL(SOUND_PCM_READ_CHANNELS) -COMPATIBLE_IOCTL(SOUND_PCM_READ_BITS) -COMPATIBLE_IOCTL(SOUND_PCM_READ_FILTER) -/* Big C for sound/OSS */ -COMPATIBLE_IOCTL(SNDCTL_COPR_RESET) -COMPATIBLE_IOCTL(SNDCTL_COPR_LOAD) -COMPATIBLE_IOCTL(SNDCTL_COPR_RDATA) -COMPATIBLE_IOCTL(SNDCTL_COPR_RCODE) -COMPATIBLE_IOCTL(SNDCTL_COPR_WDATA) -COMPATIBLE_IOCTL(SNDCTL_COPR_WCODE) -COMPATIBLE_IOCTL(SNDCTL_COPR_RUN) -COMPATIBLE_IOCTL(SNDCTL_COPR_HALT) -COMPATIBLE_IOCTL(SNDCTL_COPR_SENDMSG) -COMPATIBLE_IOCTL(SNDCTL_COPR_RCVMSG) -/* Big M for sound/OSS */ -COMPATIBLE_IOCTL(SOUND_MIXER_READ_VOLUME) -COMPATIBLE_IOCTL(SOUND_MIXER_READ_BASS) -COMPATIBLE_IOCTL(SOUND_MIXER_READ_TREBLE) -COMPATIBLE_IOCTL(SOUND_MIXER_READ_SYNTH) -COMPATIBLE_IOCTL(SOUND_MIXER_READ_PCM) -COMPATIBLE_IOCTL(SOUND_MIXER_READ_SPEAKER) -COMPATIBLE_IOCTL(SOUND_MIXER_READ_LINE) -COMPATIBLE_IOCTL(SOUND_MIXER_READ_MIC) -COMPATIBLE_IOCTL(SOUND_MIXER_READ_CD) -COMPATIBLE_IOCTL(SOUND_MIXER_READ_IMIX) -COMPATIBLE_IOCTL(SOUND_MIXER_READ_ALTPCM) -COMPATIBLE_IOCTL(SOUND_MIXER_READ_RECLEV) -COMPATIBLE_IOCTL(SOUND_MIXER_READ_IGAIN) -COMPATIBLE_IOCTL(SOUND_MIXER_READ_OGAIN) -COMPATIBLE_IOCTL(SOUND_MIXER_READ_LINE1) -COMPATIBLE_IOCTL(SOUND_MIXER_READ_LINE2) -COMPATIBLE_IOCTL(SOUND_MIXER_READ_LINE3) -COMPATIBLE_IOCTL(MIXER_READ(SOUND_MIXER_DIGITAL1)) -COMPATIBLE_IOCTL(MIXER_READ(SOUND_MIXER_DIGITAL2)) -COMPATIBLE_IOCTL(MIXER_READ(SOUND_MIXER_DIGITAL3)) -COMPATIBLE_IOCTL(MIXER_READ(SOUND_MIXER_PHONEIN)) -COMPATIBLE_IOCTL(MIXER_READ(SOUND_MIXER_PHONEOUT)) -COMPATIBLE_IOCTL(MIXER_READ(SOUND_MIXER_VIDEO)) -COMPATIBLE_IOCTL(MIXER_READ(SOUND_MIXER_RADIO)) -COMPATIBLE_IOCTL(MIXER_READ(SOUND_MIXER_MONITOR)) -COMPATIBLE_IOCTL(SOUND_MIXER_READ_MUTE) -/* SOUND_MIXER_READ_ENHANCE, same value as READ_MUTE */ -/* SOUND_MIXER_READ_LOUD, same value as READ_MUTE */ -COMPATIBLE_IOCTL(SOUND_MIXER_READ_RECSRC) -COMPATIBLE_IOCTL(SOUND_MIXER_READ_DEVMASK) -COMPATIBLE_IOCTL(SOUND_MIXER_READ_RECMASK) -COMPATIBLE_IOCTL(SOUND_MIXER_READ_STEREODEVS) -COMPATIBLE_IOCTL(SOUND_MIXER_READ_CAPS) -COMPATIBLE_IOCTL(SOUND_MIXER_WRITE_VOLUME) -COMPATIBLE_IOCTL(SOUND_MIXER_WRITE_BASS) -COMPATIBLE_IOCTL(SOUND_MIXER_WRITE_TREBLE) -COMPATIBLE_IOCTL(SOUND_MIXER_WRITE_SYNTH) -COMPATIBLE_IOCTL(SOUND_MIXER_WRITE_PCM) -COMPATIBLE_IOCTL(SOUND_MIXER_WRITE_SPEAKER) -COMPATIBLE_IOCTL(SOUND_MIXER_WRITE_LINE) -COMPATIBLE_IOCTL(SOUND_MIXER_WRITE_MIC) -COMPATIBLE_IOCTL(SOUND_MIXER_WRITE_CD) -COMPATIBLE_IOCTL(SOUND_MIXER_WRITE_IMIX) -COMPATIBLE_IOCTL(SOUND_MIXER_WRITE_ALTPCM) -COMPATIBLE_IOCTL(SOUND_MIXER_WRITE_RECLEV) -COMPATIBLE_IOCTL(SOUND_MIXER_WRITE_IGAIN) -COMPATIBLE_IOCTL(SOUND_MIXER_WRITE_OGAIN) -COMPATIBLE_IOCTL(SOUND_MIXER_WRITE_LINE1) -COMPATIBLE_IOCTL(SOUND_MIXER_WRITE_LINE2) -COMPATIBLE_IOCTL(SOUND_MIXER_WRITE_LINE3) -COMPATIBLE_IOCTL(MIXER_WRITE(SOUND_MIXER_DIGITAL1)) -COMPATIBLE_IOCTL(MIXER_WRITE(SOUND_MIXER_DIGITAL2)) -COMPATIBLE_IOCTL(MIXER_WRITE(SOUND_MIXER_DIGITAL3)) -COMPATIBLE_IOCTL(MIXER_WRITE(SOUND_MIXER_PHONEIN)) -COMPATIBLE_IOCTL(MIXER_WRITE(SOUND_MIXER_PHONEOUT)) -COMPATIBLE_IOCTL(MIXER_WRITE(SOUND_MIXER_VIDEO)) -COMPATIBLE_IOCTL(MIXER_WRITE(SOUND_MIXER_RADIO)) -COMPATIBLE_IOCTL(MIXER_WRITE(SOUND_MIXER_MONITOR)) -COMPATIBLE_IOCTL(SOUND_MIXER_WRITE_MUTE) -/* SOUND_MIXER_WRITE_ENHANCE, same value as WRITE_MUTE */ -/* SOUND_MIXER_WRITE_LOUD, same value as WRITE_MUTE */ -COMPATIBLE_IOCTL(SOUND_MIXER_WRITE_RECSRC) -COMPATIBLE_IOCTL(SOUND_MIXER_INFO) -COMPATIBLE_IOCTL(SOUND_OLD_MIXER_INFO) -COMPATIBLE_IOCTL(SOUND_MIXER_ACCESS) -COMPATIBLE_IOCTL(SOUND_MIXER_AGC) -COMPATIBLE_IOCTL(SOUND_MIXER_3DSE) -COMPATIBLE_IOCTL(SOUND_MIXER_PRIVATE1) -COMPATIBLE_IOCTL(SOUND_MIXER_PRIVATE2) -COMPATIBLE_IOCTL(SOUND_MIXER_PRIVATE3) -COMPATIBLE_IOCTL(SOUND_MIXER_PRIVATE4) -COMPATIBLE_IOCTL(SOUND_MIXER_PRIVATE5) -COMPATIBLE_IOCTL(SOUND_MIXER_GETLEVELS) -COMPATIBLE_IOCTL(SOUND_MIXER_SETLEVELS) -COMPATIBLE_IOCTL(OSS_GETVERSION) /* Raw devices */ COMPATIBLE_IOCTL(RAW_SETBIND) COMPATIBLE_IOCTL(RAW_GETBIND) diff --git a/sound/core/oss/pcm_oss.c b/sound/core/oss/pcm_oss.c index f8d4a419f3af..3f25c9d7b7df 100644 --- a/sound/core/oss/pcm_oss.c +++ b/sound/core/oss/pcm_oss.c @@ -2732,6 +2732,10 @@ static long snd_pcm_oss_ioctl(struct file *file, unsigned int cmd, unsigned long static long snd_pcm_oss_ioctl_compat(struct file *file, unsigned int cmd, unsigned long arg) { + /* + * Everything is compatbile except SNDCTL_DSP_MAPINBUF/SNDCTL_DSP_MAPOUTBUF, + * which are not implemented for the native case either + */ return snd_pcm_oss_ioctl(file, cmd, (unsigned long)compat_ptr(arg)); } #else diff --git a/sound/oss/dmasound/dmasound_core.c b/sound/oss/dmasound/dmasound_core.c index fc9bcd47d6a4..b6b5f5a5df9c 100644 --- a/sound/oss/dmasound/dmasound_core.c +++ b/sound/oss/dmasound/dmasound_core.c @@ -384,6 +384,7 @@ static const struct file_operations mixer_fops = .owner = THIS_MODULE, .llseek = no_llseek, .unlocked_ioctl = mixer_unlocked_ioctl, + .compat_ioctl = mixer_unlocked_ioctl, .open = mixer_open, .release = mixer_release, }; @@ -1167,6 +1168,7 @@ static const struct file_operations sq_fops = .write = sq_write, .poll = sq_poll, .unlocked_ioctl = sq_unlocked_ioctl, + .compat_ioctl = sq_unlocked_ioctl, .open = sq_open, .release = sq_release, };