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authorLennart Poettering <lennart@poettering.net>2010-01-29 03:18:09 +0100
committerLennart Poettering <lennart@poettering.net>2010-01-29 03:18:09 +0100
commitf50e0a012340fa8dfe6ec7f0cd869f5f3a052d7a (patch)
tree79ef58ce7acbc8dffcb0af8284a0f4e5922bbe88 /device.c
parentb08d03ffe58332f590aae5c78a85e4fc0b8588ce (diff)
implement coldpluggin
Diffstat (limited to 'device.c')
-rw-r--r--device.c66
1 files changed, 48 insertions, 18 deletions
diff --git a/device.c b/device.c
index 6d7e2c6fa3..34d760a48a 100644
--- a/device.c
+++ b/device.c
@@ -8,6 +8,16 @@
#include "strv.h"
#include "log.h"
+static const UnitActiveState state_translation_table[_DEVICE_STATE_MAX] = {
+ [DEVICE_DEAD] = UNIT_INACTIVE,
+ [DEVICE_AVAILABLE] = UNIT_ACTIVE
+};
+
+static const char* const state_string_table[_DEVICE_STATE_MAX] = {
+ [DEVICE_DEAD] = "dead",
+ [DEVICE_AVAILABLE] = "available"
+};
+
static void device_done(Unit *u) {
Device *d = DEVICE(u);
@@ -15,13 +25,31 @@ static void device_done(Unit *u) {
free(d->sysfs);
}
-static void device_dump(Unit *u, FILE *f, const char *prefix) {
+static void device_set_state(Device *d, DeviceState state) {
+ DeviceState old_state;
+ assert(d);
- static const char* const state_table[_DEVICE_STATE_MAX] = {
- [DEVICE_DEAD] = "dead",
- [DEVICE_AVAILABLE] = "available"
- };
+ old_state = d->state;
+ d->state = state;
+ log_debug("%s changed %s → %s", unit_id(UNIT(d)), state_string_table[old_state], state_string_table[state]);
+
+ unit_notify(UNIT(d), state_translation_table[old_state], state_translation_table[state]);
+}
+
+static int device_coldplug(Unit *u) {
+ Device *d = DEVICE(u);
+
+ assert(d);
+ assert(d->state == DEVICE_DEAD);
+
+ if (d->sysfs)
+ device_set_state(d, DEVICE_AVAILABLE);
+
+ return 0;
+}
+
+static void device_dump(Unit *u, FILE *f, const char *prefix) {
Device *d = DEVICE(u);
assert(d);
@@ -29,8 +57,14 @@ static void device_dump(Unit *u, FILE *f, const char *prefix) {
fprintf(f,
"%sDevice State: %s\n"
"%sSysfs Path: %s\n",
- prefix, state_table[d->state],
- prefix, d->sysfs);
+ prefix, state_string_table[d->state],
+ prefix, strna(d->sysfs));
+}
+
+static UnitActiveState device_active_state(Unit *u) {
+ assert(u);
+
+ return state_translation_table[DEVICE(u)->state];
}
static int device_add_escaped_name(Unit *u, const char *prefix, const char *dn, bool make_id) {
@@ -108,11 +142,9 @@ static int device_process_device(Manager *m, struct udev_device *dev) {
}
if ((model = udev_device_get_property_value(dev, "ID_MODEL_FROM_DATABASE")) ||
- (model = udev_device_get_property_value(dev, "ID_MODEL")))
- if (!(u->meta.description = strdup(model))) {
- r = -ENOMEM;
+ (model = udev_device_get_property_value(dev, "ID_MODEL")))
+ if ((r = unit_set_description(u, model)) < 0)
goto fail;
- }
} else {
delete = false;
@@ -229,19 +261,17 @@ fail:
return r;
}
-static UnitActiveState device_active_state(Unit *u) {
- return DEVICE(u)->state == DEVICE_DEAD ? UNIT_INACTIVE : UNIT_ACTIVE;
-}
-
const UnitVTable device_vtable = {
.suffix = ".device",
.init = unit_load_fragment_and_dropin,
.done = device_done,
+ .coldplug = device_coldplug,
+
.dump = device_dump,
- .enumerate = device_enumerate,
- .shutdown = device_shutdown,
+ .active_state = device_active_state,
- .active_state = device_active_state
+ .enumerate = device_enumerate,
+ .shutdown = device_shutdown
};