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-rw-r--r--plug/hotplug.c130
1 files changed, 122 insertions, 8 deletions
diff --git a/plug/hotplug.c b/plug/hotplug.c
index 1a98e8b..0c97e4d 100644
--- a/plug/hotplug.c
+++ b/plug/hotplug.c
@@ -35,20 +35,57 @@
#define HOTPLUG_WAIT 500
+struct cmd_handler;
struct cmd_queue {
struct list_head list;
struct blob_attr *msg;
struct blob_attr *data;
+ int timeout;
+
void (*handler)(struct blob_attr *msg, struct blob_attr *data);
+ void (*start)(struct blob_attr *msg, struct blob_attr *data);
+ void (*complete)(struct blob_attr *msg, struct blob_attr *data, int ret);
+};
+
+struct button_timeout {
+ struct list_head list;
+ struct uloop_timeout timeout;
+ char *name;
+ int seen;
+ struct blob_attr *data;
};
static LIST_HEAD(cmd_queue);
+static LIST_HEAD(button_timer);
static struct uloop_process queue_proc;
static struct uloop_timeout last_event;
-static struct blob_buf b;
+static struct blob_buf b, button_buf;
static char *rule_file;
static struct blob_buf script;
+static struct cmd_queue *current;
+
+static void queue_add(struct cmd_handler *h, struct blob_attr *msg, struct blob_attr *data);
+static void handle_button_complete(struct blob_attr *msg, struct blob_attr *data, int ret);
+
+static void button_free(struct button_timeout *b)
+{
+ uloop_timeout_cancel(&b->timeout);
+ list_del(&b->list);
+ free(b->data);
+ free(b->name);
+ free(b);
+}
+
+static void button_timeout_remove(char *button)
+{
+ struct button_timeout *b, *c;
+
+ if (!list_empty(&button_timer)) list_for_each_entry_safe(b, c, &button_timer, list) {
+ if (!strcmp(b->name, button))
+ button_free(b);
+ }
+}
static char *hotplug_msg_find_var(struct blob_attr *msg, const char *name)
{
@@ -157,6 +194,14 @@ static void handle_exec(struct blob_attr *msg, struct blob_attr *data)
exit(-1);
}
+static void handle_button_start(struct blob_attr *msg, struct blob_attr *data)
+{
+ char *button = hotplug_msg_find_var(msg, "BUTTON");
+
+ if (button)
+ button_timeout_remove(button);
+}
+
static void handle_firmware(struct blob_attr *msg, struct blob_attr *data)
{
char *dir = blobmsg_get_string(blobmsg_data(data));
@@ -237,23 +282,42 @@ send_to_kernel:
exit(-1);
}
+enum {
+ HANDLER_MKDEV = 0,
+ HANDLER_RM,
+ HANDLER_EXEC,
+ HANDLER_BUTTON,
+ HANDLER_FW,
+};
+
static struct cmd_handler {
char *name;
int atomic;
void (*handler)(struct blob_attr *msg, struct blob_attr *data);
+ void (*start)(struct blob_attr *msg, struct blob_attr *data);
+ void (*complete)(struct blob_attr *msg, struct blob_attr *data, int ret);
} handlers[] = {
- {
+ [HANDLER_MKDEV] = {
.name = "makedev",
.atomic = 1,
.handler = handle_makedev,
- }, {
+ },
+ [HANDLER_RM] = {
.name = "rm",
.atomic = 1,
.handler = handle_rm,
- }, {
+ },
+ [HANDLER_EXEC] = {
.name = "exec",
.handler = handle_exec,
- }, {
+ },
+ [HANDLER_BUTTON] = {
+ .name = "button",
+ .handler = handle_exec,
+ .start = handle_button_start,
+ .complete = handle_button_complete,
+ },
+ [HANDLER_FW] = {
.name = "load-firmware",
.handler = handle_firmware,
},
@@ -274,10 +338,13 @@ static void queue_next(void)
c->handler(c->msg, c->data);
exit(0);
}
-
+ if (c->start)
+ c->start(c->msg, c->data);
list_del(&c->list);
- free(c);
-
+ if (c->complete)
+ current = c;
+ else
+ free(c);
if (queue_proc.pid <= 0) {
queue_next();
return;
@@ -292,6 +359,11 @@ static void queue_proc_cb(struct uloop_process *c, int ret)
{
DEBUG(4, "Finished hotplug exec instance, pid=%d\n", (int) c->pid);
+ if (current) {
+ current->complete(current->msg, current->data, ret);
+ free(current);
+ current = NULL;
+ }
queue_next();
}
@@ -314,10 +386,52 @@ static void queue_add(struct cmd_handler *h, struct blob_attr *msg, struct blob_
memcpy(c->msg, msg, blob_pad_len(msg));
memcpy(c->data, data, blob_pad_len(data));
c->handler = h->handler;
+ c->complete = h->complete;
+ c->start = h->start;
list_add_tail(&c->list, &cmd_queue);
queue_next();
}
+static void handle_button_timeout(struct uloop_timeout *t)
+{
+ struct button_timeout *b;
+ char seen[16];
+
+ b = container_of(t, struct button_timeout, timeout);
+ blob_buf_init(&button_buf, 0);
+ blobmsg_add_string(&button_buf, "ACTION", "timeout");
+ snprintf(seen, sizeof(seen), "%d", b->seen);
+ blobmsg_add_string(&button_buf, "SEEN", seen);
+ queue_add(&handlers[HANDLER_EXEC], button_buf.head, b->data);
+ button_free(b);
+}
+
+static void handle_button_complete(struct blob_attr *msg, struct blob_attr *data, int ret)
+{
+ char *name = hotplug_msg_find_var(msg, "BUTTON");
+ struct button_timeout *b;
+ int timeout = ret >> 8;
+
+ if (!timeout)
+ return;
+
+ b = malloc(sizeof(*b));
+ if (!b || !name)
+ return;
+
+ memset(b, 0, sizeof(*b));
+
+ b->data = malloc(blob_pad_len(data));
+ b->name = strdup(name);
+ b->seen = timeout;
+
+ memcpy(b->data, data, blob_pad_len(data));
+ b->timeout.cb = handle_button_timeout;
+
+ uloop_timeout_set(&b->timeout, timeout * 1000);
+ list_add(&b->list, &button_timer);
+}
+
static const char* rule_handle_var(struct json_script_ctx *ctx, const char *name, struct blob_attr *vars)
{
const char *str, *sep;