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Message-Id: <20191112151642.680072-8-arnd@arndb.de>
Date: Tue, 12 Nov 2019 16:16:41 +0100
From: Arnd Bergmann <arnd@...db.de>
To: alsa-devel@...a-project.org, Takashi Iwai <tiwai@...e.com>
Cc: Baolin Wang <baolin.wang7@...il.com>, y2038@...ts.linaro.org,
linux-kernel@...r.kernel.org, Jaroslav Kysela <perex@...ex.cz>,
Mark Brown <broonie@...nel.org>, Arnd Bergmann <arnd@...db.de>,
Baolin Wang <baolin.wang@...aro.org>
Subject: [PATCH v6 7/8] ALSA: move snd_pcm_ioctl_sync_ptr_compat into pcm_native.c
This is a preparation patch, moving the compat handler for
snd_pcm_ioctl_sync_ptr_compat from pcm_compat.c to pcm_native.c.
No other changes are indented.
Signed-off-by: Baolin Wang <baolin.wang@...aro.org>
Signed-off-by: Arnd Bergmann <arnd@...db.de>
---
sound/core/pcm_compat.c | 98 --------------------------------------
sound/core/pcm_native.c | 101 ++++++++++++++++++++++++++++++++++++++++
2 files changed, 101 insertions(+), 98 deletions(-)
diff --git a/sound/core/pcm_compat.c b/sound/core/pcm_compat.c
index 2671658442ea..6a2e5ea145e6 100644
--- a/sound/core/pcm_compat.c
+++ b/sound/core/pcm_compat.c
@@ -83,19 +83,6 @@ struct snd_pcm_sw_params32 {
unsigned char reserved[56];
};
-/* recalcuate the boundary within 32bit */
-static snd_pcm_uframes_t recalculate_boundary(struct snd_pcm_runtime *runtime)
-{
- snd_pcm_uframes_t boundary;
-
- if (! runtime->buffer_size)
- return 0;
- boundary = runtime->buffer_size;
- while (boundary * 2 <= 0x7fffffffUL - runtime->buffer_size)
- boundary *= 2;
- return boundary;
-}
-
static int snd_pcm_ioctl_sw_params_compat(struct snd_pcm_substream *substream,
struct snd_pcm_sw_params32 __user *src)
{
@@ -388,91 +375,6 @@ static int snd_pcm_ioctl_xfern_compat(struct snd_pcm_substream *substream,
return err;
}
-
-struct snd_pcm_mmap_status32 {
- s32 state;
- s32 pad1;
- u32 hw_ptr;
- struct compat_timespec tstamp;
- s32 suspended_state;
- struct compat_timespec audio_tstamp;
-} __attribute__((packed));
-
-struct snd_pcm_mmap_control32 {
- u32 appl_ptr;
- u32 avail_min;
-};
-
-struct snd_pcm_sync_ptr32 {
- u32 flags;
- union {
- struct snd_pcm_mmap_status32 status;
- unsigned char reserved[64];
- } s;
- union {
- struct snd_pcm_mmap_control32 control;
- unsigned char reserved[64];
- } c;
-} __attribute__((packed));
-
-static int snd_pcm_ioctl_sync_ptr_compat(struct snd_pcm_substream *substream,
- struct snd_pcm_sync_ptr32 __user *src)
-{
- struct snd_pcm_runtime *runtime = substream->runtime;
- volatile struct snd_pcm_mmap_status *status;
- volatile struct snd_pcm_mmap_control *control;
- u32 sflags;
- struct snd_pcm_mmap_control scontrol;
- struct snd_pcm_mmap_status sstatus;
- snd_pcm_uframes_t boundary;
- int err;
-
- if (snd_BUG_ON(!runtime))
- return -EINVAL;
-
- if (get_user(sflags, &src->flags) ||
- get_user(scontrol.appl_ptr, &src->c.control.appl_ptr) ||
- get_user(scontrol.avail_min, &src->c.control.avail_min))
- return -EFAULT;
- if (sflags & SNDRV_PCM_SYNC_PTR_HWSYNC) {
- err = snd_pcm_hwsync(substream);
- if (err < 0)
- return err;
- }
- status = runtime->status;
- control = runtime->control;
- boundary = recalculate_boundary(runtime);
- if (! boundary)
- boundary = 0x7fffffff;
- snd_pcm_stream_lock_irq(substream);
- /* FIXME: we should consider the boundary for the sync from app */
- if (!(sflags & SNDRV_PCM_SYNC_PTR_APPL))
- control->appl_ptr = scontrol.appl_ptr;
- else
- scontrol.appl_ptr = control->appl_ptr % boundary;
- if (!(sflags & SNDRV_PCM_SYNC_PTR_AVAIL_MIN))
- control->avail_min = scontrol.avail_min;
- else
- scontrol.avail_min = control->avail_min;
- sstatus.state = status->state;
- sstatus.hw_ptr = status->hw_ptr % boundary;
- sstatus.tstamp = status->tstamp;
- sstatus.suspended_state = status->suspended_state;
- sstatus.audio_tstamp = status->audio_tstamp;
- snd_pcm_stream_unlock_irq(substream);
- if (put_user(sstatus.state, &src->s.status.state) ||
- put_user(sstatus.hw_ptr, &src->s.status.hw_ptr) ||
- compat_put_timespec(&sstatus.tstamp, &src->s.status.tstamp) ||
- put_user(sstatus.suspended_state, &src->s.status.suspended_state) ||
- compat_put_timespec(&sstatus.audio_tstamp,
- &src->s.status.audio_tstamp) ||
- put_user(scontrol.appl_ptr, &src->c.control.appl_ptr) ||
- put_user(scontrol.avail_min, &src->c.control.avail_min))
- return -EFAULT;
-
- return 0;
-}
-
#ifdef CONFIG_X86_X32
/* X32 ABI has 64bit timespec and 64bit alignment */
struct snd_pcm_mmap_status_x32 {
diff --git a/sound/core/pcm_native.c b/sound/core/pcm_native.c
index 2c8c9b91677a..cad90d9ce9da 100644
--- a/sound/core/pcm_native.c
+++ b/sound/core/pcm_native.c
@@ -4,6 +4,7 @@
* Copyright (c) by Jaroslav Kysela <perex@...ex.cz>
*/
+#include <linux/compat.h>
#include <linux/mm.h>
#include <linux/module.h>
#include <linux/file.h>
@@ -2846,6 +2847,106 @@ static int snd_pcm_sync_ptr(struct snd_pcm_substream *substream,
return 0;
}
+#ifdef CONFIG_COMPAT
+struct snd_pcm_mmap_status32 {
+ s32 state;
+ s32 pad1;
+ u32 hw_ptr;
+ struct compat_timespec tstamp;
+ s32 suspended_state;
+ struct compat_timespec audio_tstamp;
+} __attribute__((packed));
+
+struct snd_pcm_mmap_control32 {
+ u32 appl_ptr;
+ u32 avail_min;
+};
+
+struct snd_pcm_sync_ptr32 {
+ u32 flags;
+ union {
+ struct snd_pcm_mmap_status32 status;
+ unsigned char reserved[64];
+ } s;
+ union {
+ struct snd_pcm_mmap_control32 control;
+ unsigned char reserved[64];
+ } c;
+} __attribute__((packed));
+
+/* recalcuate the boundary within 32bit */
+static snd_pcm_uframes_t recalculate_boundary(struct snd_pcm_runtime *runtime)
+{
+ snd_pcm_uframes_t boundary;
+
+ if (! runtime->buffer_size)
+ return 0;
+ boundary = runtime->buffer_size;
+ while (boundary * 2 <= 0x7fffffffUL - runtime->buffer_size)
+ boundary *= 2;
+ return boundary;
+}
+
+static int snd_pcm_ioctl_sync_ptr_compat(struct snd_pcm_substream *substream,
+ struct snd_pcm_sync_ptr32 __user *src)
+{
+ struct snd_pcm_runtime *runtime = substream->runtime;
+ volatile struct snd_pcm_mmap_status *status;
+ volatile struct snd_pcm_mmap_control *control;
+ u32 sflags;
+ struct snd_pcm_mmap_control scontrol;
+ struct snd_pcm_mmap_status sstatus;
+ snd_pcm_uframes_t boundary;
+ int err;
+
+ if (snd_BUG_ON(!runtime))
+ return -EINVAL;
+
+ if (get_user(sflags, &src->flags) ||
+ get_user(scontrol.appl_ptr, &src->c.control.appl_ptr) ||
+ get_user(scontrol.avail_min, &src->c.control.avail_min))
+ return -EFAULT;
+ if (sflags & SNDRV_PCM_SYNC_PTR_HWSYNC) {
+ err = snd_pcm_hwsync(substream);
+ if (err < 0)
+ return err;
+ }
+ status = runtime->status;
+ control = runtime->control;
+ boundary = recalculate_boundary(runtime);
+ if (! boundary)
+ boundary = 0x7fffffff;
+ snd_pcm_stream_lock_irq(substream);
+ /* FIXME: we should consider the boundary for the sync from app */
+ if (!(sflags & SNDRV_PCM_SYNC_PTR_APPL))
+ control->appl_ptr = scontrol.appl_ptr;
+ else
+ scontrol.appl_ptr = control->appl_ptr % boundary;
+ if (!(sflags & SNDRV_PCM_SYNC_PTR_AVAIL_MIN))
+ control->avail_min = scontrol.avail_min;
+ else
+ scontrol.avail_min = control->avail_min;
+ sstatus.state = status->state;
+ sstatus.hw_ptr = status->hw_ptr % boundary;
+ sstatus.tstamp = status->tstamp;
+ sstatus.suspended_state = status->suspended_state;
+ sstatus.audio_tstamp = status->audio_tstamp;
+ snd_pcm_stream_unlock_irq(substream);
+ if (put_user(sstatus.state, &src->s.status.state) ||
+ put_user(sstatus.hw_ptr, &src->s.status.hw_ptr) ||
+ compat_put_timespec(&sstatus.tstamp, &src->s.status.tstamp) ||
+ put_user(sstatus.suspended_state, &src->s.status.suspended_state) ||
+ compat_put_timespec(&sstatus.audio_tstamp,
+ &src->s.status.audio_tstamp) ||
+ put_user(scontrol.appl_ptr, &src->c.control.appl_ptr) ||
+ put_user(scontrol.avail_min, &src->c.control.avail_min))
+ return -EFAULT;
+
+ return 0;
+}
+#define __SNDRV_PCM_IOCTL_SYNC_PTR32 = _IOWR('A', 0x23, struct snd_pcm_sync_ptr32),
+#endif
+
static int snd_pcm_tstamp(struct snd_pcm_substream *substream, int __user *_arg)
{
struct snd_pcm_runtime *runtime = substream->runtime;
--
2.20.0
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