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src/pcm.c: remove MAP_FILE mmap flag

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MAP_FILE is a non-standard mmap flag, and has no effect on conformant
systems.
This commit is contained in:
Ethan Sommer
2020-05-22 21:04:55 -04:00
parent d5fea77414
commit 304b148dd4
1 changed files with 3 additions and 3 deletions
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src/pcm.c
+3 -3
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@@ -405,7 +405,7 @@ int pcm_set_config(struct pcm *pcm, const struct pcm_config *config)
if (pcm->flags & PCM_MMAP) {
pcm->mmap_buffer = mmap(NULL, pcm_frames_to_bytes(pcm, pcm->buffer_size),
PROT_READ | PROT_WRITE, MAP_FILE | MAP_SHARED, pcm->fd, 0);
PROT_READ | PROT_WRITE, MAP_SHARED, pcm->fd, 0);
if (pcm->mmap_buffer == MAP_FAILED) {
int errno_copy = errno;
oops(pcm, errno, "failed to mmap buffer %d bytes\n",
@@ -544,7 +544,7 @@ static int pcm_hw_mmap_status(struct pcm *pcm)
return 0;
int page_size = sysconf(_SC_PAGE_SIZE);
pcm->mmap_status = mmap(NULL, page_size, PROT_READ, MAP_FILE | MAP_SHARED,
pcm->mmap_status = mmap(NULL, page_size, PROT_READ, MAP_SHARED,
pcm->fd, SNDRV_PCM_MMAP_OFFSET_STATUS);
if (pcm->mmap_status == MAP_FAILED)
pcm->mmap_status = NULL;
@@ -552,7 +552,7 @@ static int pcm_hw_mmap_status(struct pcm *pcm)
goto mmap_error;
pcm->mmap_control = mmap(NULL, page_size, PROT_READ | PROT_WRITE,
MAP_FILE | MAP_SHARED, pcm->fd, SNDRV_PCM_MMAP_OFFSET_CONTROL);
MAP_SHARED, pcm->fd, SNDRV_PCM_MMAP_OFFSET_CONTROL);
if (pcm->mmap_control == MAP_FAILED)
pcm->mmap_control = NULL;
if (!pcm->mmap_control) {