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| author | Takashi Iwai <tiwai@suse.de> | 2010-04-13 13:49:04 +0400 |
|---|---|---|
| committer | Takashi Iwai <tiwai@suse.de> | 2010-04-13 14:01:21 +0400 |
| commit | 02f4865fa415a87de28cc8c2e4d798ff46be1cf8 (patch) | |
| tree | 7d8e1087fd17e0390439ad4fe3cdd59477c3032c /sound/core/oss | |
| parent | 73029e0ff18dfac8a1aab1dc188e1e150bbe3adc (diff) | |
| download | linux-02f4865fa415a87de28cc8c2e4d798ff46be1cf8.tar.xz | |
ALSA: core - Define llseek fops
Set no_llseek to llseek file ops of each sound component (but for hwdep).
This avoids the implicit BKL invocation via generic_file_llseek() used
as default when fops.llseek is NULL.
Also call nonseekable_open() at each open ops to ensure the file flags
have no seek bit.
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'sound/core/oss')
| -rw-r--r-- | sound/core/oss/mixer_oss.c | 5 | ||||
| -rw-r--r-- | sound/core/oss/pcm_oss.c | 5 |
2 files changed, 10 insertions, 0 deletions
diff --git a/sound/core/oss/mixer_oss.c b/sound/core/oss/mixer_oss.c index 54e2eb56e4c2..f50ebf20df96 100644 --- a/sound/core/oss/mixer_oss.c +++ b/sound/core/oss/mixer_oss.c @@ -43,6 +43,10 @@ static int snd_mixer_oss_open(struct inode *inode, struct file *file) struct snd_mixer_oss_file *fmixer; int err; + err = nonseekable_open(inode, file); + if (err < 0) + return err; + card = snd_lookup_oss_minor_data(iminor(inode), SNDRV_OSS_DEVICE_TYPE_MIXER); if (card == NULL) @@ -397,6 +401,7 @@ static const struct file_operations snd_mixer_oss_f_ops = .owner = THIS_MODULE, .open = snd_mixer_oss_open, .release = snd_mixer_oss_release, + .llseek = no_llseek, .unlocked_ioctl = snd_mixer_oss_ioctl, .compat_ioctl = snd_mixer_oss_ioctl_compat, }; diff --git a/sound/core/oss/pcm_oss.c b/sound/core/oss/pcm_oss.c index 82d4e3329b3d..5c8c7dff8ede 100644 --- a/sound/core/oss/pcm_oss.c +++ b/sound/core/oss/pcm_oss.c @@ -2379,6 +2379,10 @@ static int snd_pcm_oss_open(struct inode *inode, struct file *file) int nonblock; wait_queue_t wait; + err = nonseekable_open(inode, file); + if (err < 0) + return err; + pcm = snd_lookup_oss_minor_data(iminor(inode), SNDRV_OSS_DEVICE_TYPE_PCM); if (pcm == NULL) { @@ -2977,6 +2981,7 @@ static const struct file_operations snd_pcm_oss_f_reg = .write = snd_pcm_oss_write, .open = snd_pcm_oss_open, .release = snd_pcm_oss_release, + .llseek = no_llseek, .poll = snd_pcm_oss_poll, .unlocked_ioctl = snd_pcm_oss_ioctl, .compat_ioctl = snd_pcm_oss_ioctl_compat, |