From: Arnd Bergmann <arnd@arndb.de>
To: Alexander Viro <viro@zeniv.linux.org.uk>
Cc: linux-fsdevel@vger.kernel.org, y2038@lists.linaro.org,
linux-kernel@vger.kernel.org, Arnd Bergmann <arnd@arndb.de>,
Jaroslav Kysela <perex@perex.cz>, Takashi Iwai <tiwai@suse.com>,
Vinod Koul <vkoul@kernel.org>,
linux-um@lists.infradead.org, alsa-devel@alsa-project.org
Subject: [PATCH v3 20/26] compat_ioctl: remove translation for sound ioctls
Date: Tue, 16 Apr 2019 22:28:05 +0200 [thread overview]
Message-ID: <20190416202839.248216-1-arnd@arndb.de> (raw)
In-Reply-To: <20190416202013.4034148-1-arnd@arndb.de>
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 <arnd@arndb.de>
---
arch/um/drivers/hostaudio_kern.c | 1 +
fs/compat_ioctl.c | 158 -----------------------------
sound/core/oss/pcm_oss.c | 4 +
sound/oss/dmasound/dmasound_core.c | 2 +
4 files changed, 7 insertions(+), 158 deletions(-)
diff --git a/arch/um/drivers/hostaudio_kern.c b/arch/um/drivers/hostaudio_kern.c
index 7f9dbdbc4eb7..1bf139c3727a 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 = compat_ptr_ioctl,
.mmap = NULL,
.open = hostaudio_open,
.release = hostaudio_release,
diff --git a/fs/compat_ioctl.c b/fs/compat_ioctl.c
index 5d13336e9eaa..625536aa6b03 100644
--- a/fs/compat_ioctl.c
+++ b/fs/compat_ioctl.c
@@ -51,8 +51,6 @@
#include <linux/uaccess.h>
#include <linux/watchdog.h>
-#include <linux/soundcard.h>
-
#include <linux/hiddev.h>
@@ -399,162 +397,6 @@ 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 f6ae68017608..f85ea328fd27 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..f802ea331e24 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 = compat_ptr_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 = compat_ptr_ioctl,
.open = sq_open,
.release = sq_release,
};
--
2.20.0
next prev parent reply other threads:[~2019-04-16 20:29 UTC|newest]
Thread overview: 57+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-04-16 20:19 [PATCH v3 00/26] compat_ioctl: cleanups Arnd Bergmann
2019-04-16 20:19 ` [PATCH v3 01/26] compat_ioctl: pppoe: fix PPPOEIOCSFWD handling Arnd Bergmann
2019-04-16 20:19 ` [PATCH v3 02/26] compat_ioctl: move simple ppp command handling into driver Arnd Bergmann
2019-04-17 21:13 ` Al Viro
2019-04-17 22:03 ` Arnd Bergmann
2019-04-17 23:53 ` Al Viro
2019-04-18 5:57 ` Al Viro
2019-04-18 15:14 ` Arnd Bergmann
2019-04-16 20:19 ` [PATCH v3 03/26] compat_ioctl: avoid unused function warning for do_ioctl Arnd Bergmann
2019-04-16 20:19 ` [PATCH v3 04/26] compat_ioctl: move PPPIOCSCOMPRESS32 to ppp-generic.c Arnd Bergmann
2019-04-17 21:16 ` Al Viro
2019-04-17 21:44 ` Arnd Bergmann
2019-04-16 20:19 ` [PATCH v3 05/26] compat_ioctl: move PPPIOCSPASS32/PPPIOCSACTIVE32 to ppp_generic.c Arnd Bergmann
2019-04-16 20:19 ` [PATCH v3 06/26] compat_ioctl: handle PPPIOCGIDLE for 64-bit time_t Arnd Bergmann
2019-04-16 20:19 ` [PATCH v3 07/26] compat_ioctl: move rtc handling into rtc-dev.c Arnd Bergmann
2019-04-16 20:19 ` [PATCH v3 08/26] compat_ioctl: add compat_ptr_ioctl() Arnd Bergmann
2019-04-17 21:19 ` Al Viro
2019-04-17 21:34 ` Arnd Bergmann
2019-04-16 20:19 ` [PATCH v3 09/26] compat_ioctl: move drivers to compat_ptr_ioctl Arnd Bergmann
2019-04-16 20:31 ` Jiri Kosina
2019-04-18 11:10 ` Stefan Hajnoczi
2019-04-19 23:16 ` Michael S. Tsirkin
2019-04-16 20:19 ` [PATCH v3 10/26] compat_ioctl: use correct compat_ptr() translation in drivers Arnd Bergmann
2019-04-17 21:21 ` Al Viro
2019-04-16 20:19 ` [PATCH v3 11/26] ceph: fix compat_ioctl for ceph_dir_operations Arnd Bergmann
2019-04-17 21:23 ` Al Viro
2019-04-17 21:31 ` Arnd Bergmann
2019-04-16 20:25 ` [PATCH v3 12/26] compat_ioctl: move more drivers to compat_ptr_ioctl Arnd Bergmann
2019-04-16 20:25 ` [PATCH v3 13/26] compat_ioctl: move tape handling into drivers Arnd Bergmann
2019-04-16 20:25 ` [PATCH v3 14/26] compat_ioctl: move ATYFB_CLK handling to atyfb driver Arnd Bergmann
2019-04-17 21:27 ` Al Viro
2019-04-17 21:28 ` Al Viro
2019-05-06 13:37 ` Bartlomiej Zolnierkiewicz
2019-04-16 20:25 ` [PATCH v3 15/26] compat_ioctl: move isdn/capi ioctl translation into driver Arnd Bergmann
2019-04-16 20:25 ` [PATCH v3 16/26] compat_ioctl: move rfcomm handlers " Arnd Bergmann
2019-04-16 20:25 ` [PATCH v3 17/26] compat_ioctl: move hci_sock " Arnd Bergmann
2019-04-16 20:25 ` [PATCH v3 18/26] compat_ioctl: remove HCIUART handling Arnd Bergmann
2019-04-16 20:25 ` [PATCH v3 19/26] compat_ioctl: remove HIDIO translation Arnd Bergmann
2019-04-25 15:21 ` [PATCH v3 12/26] compat_ioctl: move more drivers to compat_ptr_ioctl Mauro Carvalho Chehab
2019-04-25 15:32 ` Arnd Bergmann
2019-04-25 15:35 ` Al Viro
2019-04-25 15:53 ` Mauro Carvalho Chehab
2019-04-25 15:55 ` Arnd Bergmann
2019-04-25 16:42 ` Al Viro
2019-04-25 21:25 ` Johannes Berg
2019-04-26 7:46 ` Arnd Bergmann
2019-04-16 20:28 ` Arnd Bergmann [this message]
2019-04-16 20:28 ` [PATCH v3 21/26] compat_ioctl: remove IGNORE_IOCTL() Arnd Bergmann
2019-04-16 20:28 ` [PATCH v3 22/26] compat_ioctl: remove /dev/random commands Arnd Bergmann
2019-04-16 20:28 ` [PATCH v3 23/26] compat_ioctl: remove joystick ioctl translation Arnd Bergmann
2019-04-16 20:28 ` [PATCH v3 24/26] compat_ioctl: remove PCI " Arnd Bergmann
2019-04-16 20:28 ` [PATCH v3 25/26] compat_ioctl: remove /dev/raw " Arnd Bergmann
2019-04-16 20:28 ` [PATCH v3 26/26] compat_ioctl: remove last RAID handling code Arnd Bergmann
2019-04-17 8:05 ` [PATCH v3 20/26] compat_ioctl: remove translation for sound ioctls Takashi Iwai
2019-04-29 7:05 ` Takashi Iwai
2019-04-29 12:43 ` Arnd Bergmann
2019-04-16 22:33 ` [PATCH v3 00/26] compat_ioctl: cleanups Douglas Gilbert
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