diff options
Diffstat (limited to 'sound/core/compress_offload.c')
| -rw-r--r-- | sound/core/compress_offload.c | 34 |
1 files changed, 29 insertions, 5 deletions
diff --git a/sound/core/compress_offload.c b/sound/core/compress_offload.c index ec2118d0e27..c40ae573346 100644 --- a/sound/core/compress_offload.c +++ b/sound/core/compress_offload.c @@ -80,14 +80,12 @@ static int snd_compr_open(struct inode *inode, struct file *f) int maj = imajor(inode); int ret; - if (f->f_flags & O_WRONLY) + if ((f->f_flags & O_ACCMODE) == O_WRONLY) dirn = SND_COMPRESS_PLAYBACK; - else if (f->f_flags & O_RDONLY) + else if ((f->f_flags & O_ACCMODE) == O_RDONLY) dirn = SND_COMPRESS_CAPTURE; - else { - pr_err("invalid direction\n"); + else return -EINVAL; - } if (maj == snd_major) compr = snd_lookup_minor_data(iminor(inode), @@ -427,6 +425,26 @@ static int snd_compr_allocate_buffer(struct snd_compr_stream *stream, return 0; } +static int snd_compress_check_input(struct snd_compr_params *params) +{ + /* first let's check the buffer parameter's */ + if (params->buffer.fragment_size == 0 || + params->buffer.fragments > SIZE_MAX / params->buffer.fragment_size) + return -EINVAL; + + /* now codec parameters */ + if (params->codec.id == 0 || params->codec.id > SND_AUDIOCODEC_MAX) + return -EINVAL; + + if (params->codec.ch_in == 0 || params->codec.ch_out == 0) + return -EINVAL; + + if (!(params->codec.sample_rate & SNDRV_PCM_RATE_8000_192000)) + return -EINVAL; + + return 0; +} + static int snd_compr_set_params(struct snd_compr_stream *stream, unsigned long arg) { @@ -445,11 +463,17 @@ snd_compr_set_params(struct snd_compr_stream *stream, unsigned long arg) retval = -EFAULT; goto out; } + + retval = snd_compress_check_input(params); + if (retval) + goto out; + retval = snd_compr_allocate_buffer(stream, params); if (retval) { retval = -ENOMEM; goto out; } + retval = stream->ops->set_params(stream, params); if (retval) goto out; |