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handle snprintf errors better

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This commit is contained in:
Wim Taymans 2021-07-06 17:56:04 +02:00
parent 99b1ce96ed
commit 8184d4576a
2 changed files with 18 additions and 7 deletions
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18
spa/plugins/alsa/alsa-pcm.c
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@ -410,20 +410,28 @@ spa_alsa_enum_format(struct state *state, int seq, uint32_t start, uint32_t num,
}
if (j == 0) {
char buf[1024];
int i, offs;
int i, r, offs;
for (i = 0, offs = 0; i <= SND_PCM_FORMAT_LAST; i++) {
if (snd_pcm_format_mask_test(fmask, (snd_pcm_format_t)i))
offs += snprintf(&buf[offs], sizeof(buf) - offs,
if (snd_pcm_format_mask_test(fmask, (snd_pcm_format_t)i)) {
r = snprintf(&buf[offs], sizeof(buf) - offs,
"%s ", snd_pcm_format_name((snd_pcm_format_t)i));
if (r < 0 || r + offs >= (int)sizeof(buf))
return -ENOSPC;
offs += r;
}
}
spa_log_warn(state->log, "%s: unsupported card: formats:%s",
state->props.device, buf);
for (i = 0, offs = 0; i <= SND_PCM_ACCESS_LAST; i++) {
if (snd_pcm_access_mask_test(amask, (snd_pcm_access_t)i))
offs += snprintf(&buf[offs], sizeof(buf) - offs,
if (snd_pcm_access_mask_test(amask, (snd_pcm_access_t)i)) {
r = snprintf(&buf[offs], sizeof(buf) - offs,
"%s ", snd_pcm_access_name((snd_pcm_access_t)i));
if (r < 0 || r + offs >= (int)sizeof(buf))
return -ENOSPC;
offs += r;
}
}
spa_log_warn(state->log, "%s: unsupported card: access:%s",
state->props.device, buf);