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udev: when a device appears that we cannot access right-away try again later on inotify

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This commit is contained in:
Lennart Poettering 2009-08-21 14:55:05 +02:00
parent fe9a577cf2
commit 5317e35543
1 changed files with 57 additions and 34 deletions
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91
src/modules/module-udev-detect.c
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@ -47,6 +47,7 @@ struct device {
char *path;
pa_bool_t accessible;
char *card_name;
char *args;
uint32_t module;
};
@ -78,6 +79,7 @@ static void device_free(struct device *d) {
pa_xfree(d->path);
pa_xfree(d->card_name);
pa_xfree(d->args);
pa_xfree(d);
}
@ -103,22 +105,43 @@ static void verify_access(struct userdata *u, struct device *d) {
pa_assert(u);
pa_assert(d);
if (!(card = pa_namereg_get(u->core, d->card_name, PA_NAMEREG_CARD)))
return;
cd = pa_sprintf_malloc("%s/snd/controlC%s", udev_get_dev_path(u->udev), path_get_card_id(d->path));
d->accessible = access(cd, W_OK) >= 0;
pa_log_info("%s is accessible: %s", cd, pa_yes_no(d->accessible));
d->accessible = access(cd, R_OK|W_OK) >= 0;
pa_xfree(cd);
pa_card_suspend(card, !d->accessible, PA_SUSPEND_SESSION);
pa_log_info("%s is accessible: %s", cd, pa_yes_no(d->accessible));
if (d->module == PA_INVALID_INDEX) {
/* If we not loaded, try to load */
if (d->accessible) {
pa_module *m;
pa_log_debug("Loading module-alsa-card with arguments '%s'", d->args);
m = pa_module_load(u->core, "module-alsa-card", d->args);
if (m) {
d->module = m->index;
pa_log_info("Card %s (%s) module loaded.", d->path, d->card_name);
} else
pa_log_info("Card %s (%s) failed to load module.", d->path, d->card_name);
}
} else {
/* If we are already loaded update suspend status with
* accessible boolean */
if ((card = pa_namereg_get(u->core, d->card_name, PA_NAMEREG_CARD)))
pa_card_suspend(card, !d->accessible, PA_SUSPEND_SESSION);
}
}
static void card_changed(struct userdata *u, struct udev_device *dev) {
struct device *d;
const char *path;
const char *t;
char *card_name, *args;
pa_module *m;
char *n;
@ -135,44 +158,41 @@ static void card_changed(struct userdata *u, struct udev_device *dev) {
return;
}
d = pa_xnew0(struct device, 1);
d->path = pa_xstrdup(path);
d->accessible = TRUE;
d->module = PA_INVALID_INDEX;
if (!(t = udev_device_get_property_value(dev, "PULSE_NAME")))
if (!(t = udev_device_get_property_value(dev, "ID_ID")))
if (!(t = udev_device_get_property_value(dev, "ID_PATH")))
t = path_get_card_id(path);
n = pa_namereg_make_valid_name(t);
d->card_name = pa_sprintf_malloc("alsa_card.%s", n);
d->args = pa_sprintf_malloc("device_id=\"%s\" "
"name=\"%s\" "
"card_name=\"%s\" "
"tsched=%s "
"ignore_dB=%s "
"card_properties=\"module-udev-detect.discovered=1\"",
path_get_card_id(path),
n,
d->card_name,
pa_yes_no(u->use_tsched),
pa_yes_no(u->ignore_dB));
pa_xfree(n);
card_name = pa_sprintf_malloc("alsa_card.%s", n);
args = pa_sprintf_malloc("device_id=\"%s\" "
"name=\"%s\" "
"card_name=\"%s\" "
"tsched=%s "
"ignore_dB=%s "
"card_properties=\"module-udev-detect.discovered=1\"",
path_get_card_id(path),
n,
card_name,
pa_yes_no(u->use_tsched),
pa_yes_no(u->ignore_dB));
pa_log_debug("Loading module-alsa-card with arguments '%s'", args);
m = pa_module_load(u->core, "module-alsa-card", args);
pa_xfree(args);
pa_log_debug("Loading module-alsa-card with arguments '%s'", d->args);
m = pa_module_load(u->core, "module-alsa-card", d->args);
if (m) {
pa_log_info("Card %s (%s) added.", path, n);
d = pa_xnew(struct device, 1);
d->path = pa_xstrdup(path);
d->card_name = card_name;
d->module = m->index;
d->accessible = TRUE;
pa_hashmap_put(u->devices, d->path, d);
pa_log_info("Card %s (%s) added and module loaded.", path, d->card_name);
} else
pa_xfree(card_name);
pa_log_info("Card %s (%s) added but failed to load module.", path, d->card_name);
pa_xfree(n);
pa_hashmap_put(u->devices, d->path, d);
}
static void remove_card(struct userdata *u, struct udev_device *dev) {
@ -185,7 +205,10 @@ static void remove_card(struct userdata *u, struct udev_device *dev) {
return;
pa_log_info("Card %s removed.", d->path);
pa_module_unload_request_by_index(u->core, d->module, TRUE);
if (d->module != PA_INVALID_INDEX)
pa_module_unload_request_by_index(u->core, d->module, TRUE);
device_free(d);
}