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NULL check in mmap_begin()

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Jaroslav Kysela 2003-07-23 06:57:53 +00:00
parent 0d1fc81692
commit cb1f308ab5
1 changed files with 5 additions and 1 deletions
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6
src/pcm/pcm.c
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@ -5955,8 +5955,12 @@ int snd_pcm_mmap_begin(snd_pcm_t *pcm,
snd_pcm_uframes_t cont; snd_pcm_uframes_t cont;
snd_pcm_uframes_t f; snd_pcm_uframes_t f;
snd_pcm_uframes_t avail; snd_pcm_uframes_t avail;
const snd_pcm_channel_area_t *xareas;
assert(pcm && areas && offset && frames); assert(pcm && areas && offset && frames);
*areas = snd_pcm_mmap_areas(pcm); xareas = snd_pcm_mmap_areas(pcm);
if (xareas == NULL)
return -EBADFD;
*areas = xareas;
*offset = *pcm->appl.ptr % pcm->buffer_size; *offset = *pcm->appl.ptr % pcm->buffer_size;
avail = snd_pcm_mmap_avail(pcm); avail = snd_pcm_mmap_avail(pcm);
if (avail > pcm->buffer_size) if (avail > pcm->buffer_size)