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cli-command: don't exit on "module already loaded" errors

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Some modules may only be loaded once, and trying to load them
twice from default.pa makes PulseAudio startup fail. While that could
be considered a user error, it's nicer to not be so strict. It's not
necessarily easy to figure what went wrong, if for example the user
plays with RAOP and adds module-raop-discover to default.pa, which first
works fine, but suddenly stops working when the user at some point
enables RAOP support in paprefs. Enabling RAOP in paprefs makes
module-gconf load the module too, so the module gets loaded twice.

This patch adds a way to differentiate module load errors, and
make cli-command ignore the error when the module is already
loaded.
This commit is contained in:
Colin Leroy 2017-08-26 11:21:15 +02:00 • committed by Tanu Kaskinen
parent 1a66715320
commit f0dfddead3
23 changed files with 62 additions and 36 deletions
Download patch file Download diff file Expand all files Collapse all files

14
src/modules/module-detect.c
View file

@ -74,6 +74,7 @@ static int detect_alsa(pa_core *c, int just_one) {
char line[64], args[64];
unsigned device, subdevice;
int is_sink;
pa_module *m = NULL;
if (!fgets(line, sizeof(line), f))
break;
@ -101,7 +102,7 @@ static int detect_alsa(pa_core *c, int just_one) {
continue;
pa_snprintf(args, sizeof(args), "device_id=%u", device);
if (!pa_module_load(c, is_sink ? "module-alsa-sink" : "module-alsa-source", args))
if (pa_module_load(&m, c, is_sink ? "module-alsa-sink" : "module-alsa-source", args) < 0)
continue;
n++;
@ -136,6 +137,7 @@ static int detect_oss(pa_core *c, int just_one) {
while (!feof(f)) {
char line[256], args[64];
unsigned device;
pa_module *m = NULL;
if (!fgets(line, sizeof(line), f))
break;
@ -156,14 +158,14 @@ static int detect_oss(pa_core *c, int just_one) {
else
pa_snprintf(args, sizeof(args), "device=/dev/dsp%u", device);
if (!pa_module_load(c, "module-oss", args))
if (pa_module_load(&m, c, "module-oss", args) < 0)
continue;
} else if (sscanf(line, "pcm%u: ", &device) == 1) {
/* FreeBSD support, the devices are named /dev/dsp0.0, dsp0.1 and so on */
pa_snprintf(args, sizeof(args), "device=/dev/dsp%u.0", device);
if (!pa_module_load(c, "module-oss", args))
if (pa_module_load(&m, c, "module-oss", args) < 0)
continue;
}
@ -183,6 +185,7 @@ static int detect_solaris(pa_core *c, int just_one) {
struct stat s;
const char *dev;
char args[64];
pa_module *m = NULL;
dev = getenv("AUDIODEV");
if (!dev)
@ -199,7 +202,7 @@ static int detect_solaris(pa_core *c, int just_one) {
pa_snprintf(args, sizeof(args), "device=%s", dev);
if (!pa_module_load(c, "module-solaris", args))
if (pa_module_load(&m, c, "module-solaris", args) < 0)
return 0;
return 1;
@ -208,11 +211,12 @@ static int detect_solaris(pa_core *c, int just_one) {
#ifdef OS_IS_WIN32
static int detect_waveout(pa_core *c, int just_one) {
pa_module *m = NULL;
/*
* FIXME: No point in enumerating devices until the plugin supports
* selecting anything but the first.
*/
if (!pa_module_load(c, "module-waveout", ""))
if (pa_module_load(&m, c, "module-waveout", "") < 0)
return 0;
return 1;