handle snprintf errors better

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

View file

@ -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);

View file

@ -455,12 +455,15 @@ int format_info_from_spec(struct format_info *info, struct sample_spec *ss,
pw_properties_setf(info->props, "format.channels", "%d", ss->channels);
if (map && map->channels == ss->channels) {
char chmap[1024] = "";
int i, o;
int i, o, r;
uint32_t aux = 0;
for (i = 0, o = 0; i < map->channels; i++) {
o += snprintf(chmap+o, sizeof(chmap)-o, "%s%s", i == 0 ? "" : ",",
r = snprintf(chmap+o, sizeof(chmap)-o, "%s%s", i == 0 ? "" : ",",
channel_id2paname(map->map[i], &aux));
if (r < 0 || o + r >= (int)sizeof(chmap))
return -ENOSPC;
o += r;
}
pw_properties_setf(info->props, "format.channel_map", "\"%s\"", chmap);
}