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-rw-r--r--package/hotplug2/patches/160-event_block_fix.patch203
1 files changed, 203 insertions, 0 deletions
diff --git a/package/hotplug2/patches/160-event_block_fix.patch b/package/hotplug2/patches/160-event_block_fix.patch
new file mode 100644
index 000000000..fd037b122
--- /dev/null
+++ b/package/hotplug2/patches/160-event_block_fix.patch
@@ -0,0 +1,203 @@
+diff -x '*~' -ur hotplug2-201/uevent.c hotplug2-201.patched/uevent.c
+--- hotplug2-201/uevent.c 2009-12-09 20:44:14.000000000 +0200
++++ hotplug2-201.patched/uevent.c 2010-04-02 23:03:11.000000000 +0300
+@@ -132,6 +132,8 @@
+
+ dest = xmalloc(sizeof(struct uevent_t));
+ dest->action = src->action;
++ dest->seqnum = src->seqnum;
++ dest->action_str = strdup(src->action_str);
+ dest->env_vars_c = src->env_vars_c;
+ dest->env_vars = xmalloc(sizeof(struct env_var_t) * dest->env_vars_c);
+ dest->plain_s = src->plain_s;
+diff -x '*~' -ur hotplug2-201/workers/worker_fork.c hotplug2-201.patched/workers/worker_fork.c
+--- hotplug2-201/workers/worker_fork.c 2010-04-03 17:02:15.000000000 +0300
++++ hotplug2-201.patched/workers/worker_fork.c 2010-04-03 17:04:27.000000000 +0300
+@@ -1,6 +1,69 @@
+ #include "worker_fork.h"
+
+ static struct worker_fork_ctx_t *global_ctx;
++static struct worker_fork_uevent_t *uevent_list;
++
++static void worker_fork_uevent_free(struct worker_fork_uevent_t *node) {
++ uevent_free(node->uevent);
++ free(node);
++}
++
++static void worker_fork_uevent_add(void *in_ctx, struct uevent_t *uevent) {
++ char **env;
++ int i;
++ struct worker_fork_ctx_t *ctx = in_ctx;
++ struct worker_fork_uevent_t *node, *walker;
++
++ node = malloc(sizeof (struct worker_fork_uevent_t));
++ node->uevent = uevent_dup(uevent);
++ node->next = NULL;
++
++ if (!uevent_list) uevent_list = node;
++ else {
++ /*
++ * Put events that need to fork first and in reverse order
++ */
++ env = xmalloc(sizeof(char *) * node->uevent->env_vars_c);
++ for (i = 0; i < node->uevent->env_vars_c; i++) {
++ env[i] = alloc_env(node->uevent->env_vars[i].key, node->uevent->env_vars[i].value);
++ putenv(env[i]);
++ }
++ if (ruleset_flags(&ctx->settings->rules, uevent) & FLAG_SLOW) {
++ node->next = uevent_list;
++ uevent_list = node;
++ }
++ else {
++ for (walker = uevent_list; walker->next; walker = walker->next);
++ walker->next = node;
++ }
++ for (i = 0; i < node->uevent->env_vars_c; i++) {
++ unsetenv(node->uevent->env_vars[i].key);
++ free(env[i]);
++ }
++ free(env);
++ }
++}
++
++static void worker_fork_uevent_del(struct worker_fork_uevent_t *node) {
++ struct worker_fork_uevent_t *walker;
++
++ if (node == uevent_list) {
++ uevent_list = node->next;
++ }
++ else {
++ for (walker = uevent_list; walker->next; walker = walker->next)
++ if (walker->next == node) walker->next = node->next;
++ }
++ worker_fork_uevent_free(node);
++}
++
++static void worker_fork_uevent_empty(void) {
++ struct worker_fork_uevent_t *walker;
++
++ if (!uevent_list) return;
++ for (walker = uevent_list; walker->next; walker = walker->next) worker_fork_uevent_free(walker);
++ uevent_list = NULL;
++}
+
+ /**
+ * Destroys data structures related to the given child ID (not PID).
+@@ -315,6 +378,8 @@
+ struct worker_fork_ctx_t *ctx;
+ PRINTFUNC();
+
++ uevent_list = NULL;
++
+ ctx = malloc(sizeof(struct worker_fork_ctx_t));
+ ctx->children = NULL;
+ ctx->children_count = 0;
+@@ -376,6 +441,7 @@
+ free(ctx->children);
+ free(ctx);
+ global_ctx = NULL;
++ worker_fork_uevent_empty();
+ }
+
+
+@@ -384,15 +450,26 @@
+ int i;
+ struct worker_fork_child_t *child;
+ struct worker_fork_ctx_t *ctx = in_ctx;
++ struct worker_fork_uevent_t *node, *walker;
++ event_seqnum_t seqnum;
++
++ worker_fork_uevent_add(ctx, uevent);
++ walker = uevent_list;
+
+ /*
+- * A big loop, because if we fail to process the event,
++ * A big loop, because if we fail to process the events,
+ * we don't want to give up.
+ *
+ * TODO: Decide if we want to limit the number of attempts
+ * or set a time limit before reporting terminal failure.
+ */
+ do {
++ /*
++ * If more events are waiting, return to receive them
++ */
++ if (!seqnum_get(&seqnum) && seqnum > uevent->seqnum) break;
++
++ node = walker;
+ worker_fork_update_children(ctx);
+
+ child = NULL;
+@@ -407,9 +484,9 @@
+ * No child process is currently available.
+ */
+ if (child == NULL) {
+- env = xmalloc(sizeof(char *) * uevent->env_vars_c);
+- for (i = 0; i < uevent->env_vars_c; i++) {
+- env[i] = alloc_env(uevent->env_vars[i].key, uevent->env_vars[i].value);
++ env = xmalloc(sizeof(char *) * node->uevent->env_vars_c);
++ for (i = 0; i < node->uevent->env_vars_c; i++) {
++ env[i] = alloc_env(node->uevent->env_vars[i].key, node->uevent->env_vars[i].value);
+ putenv(env[i]);
+ }
+
+@@ -418,8 +495,11 @@
+ * can execute them in the main process?
+ */
+ if (ctx->always_fork == 0 && ctx->settings->dumb == 0 &&
+- (ruleset_flags(&ctx->settings->rules, uevent) & FLAG_MASK_SLOW) == 0) {
+- action_perform(ctx->settings, uevent);
++ (ruleset_flags(&ctx->settings->rules, node->uevent) & FLAG_MASK_SLOW) == 0) {
++ action_perform(ctx->settings, node->uevent);
++ walker = walker->next;
++ worker_fork_uevent_del(node);
++ if (walker) continue;
+ break;
+ }
+
+@@ -427,11 +507,11 @@
+ * We have to fork off a new child.
+ */
+ if (ctx->children_count < ctx->max_children ||
+- (ruleset_flags(&ctx->settings->rules, uevent) & FLAG_SLOW))
++ (ruleset_flags(&ctx->settings->rules, node->uevent) & FLAG_SLOW))
+ child = worker_fork_spawn(ctx);
+
+- for (i = 0; i < uevent->env_vars_c; i++) {
+- unsetenv(uevent->env_vars[i].key);
++ for (i = 0; i < node->uevent->env_vars_c; i++) {
++ unsetenv(node->uevent->env_vars[i].key);
+ free(env[i]);
+ }
+ free(env);
+@@ -442,9 +522,14 @@
+ */
+ if (child != NULL) {
+ child->busy = 1;
+- if (!worker_fork_relay_event(child->event_fd, uevent));
+- break;
+- child->busy = 0;
++ if (worker_fork_relay_event(child->event_fd, node->uevent)) {
++ child->busy = 0;
++ continue;
++ }
++ walker = walker->next;
++ worker_fork_uevent_del(node);
++ if (walker) continue;
++ break;
+ }
+
+ /*
+diff -x '*~' -ur hotplug2-201/workers/worker_fork.h hotplug2-201.patched/workers/worker_fork.h
+--- hotplug2-201/workers/worker_fork.h 2009-12-09 20:44:13.000000000 +0200
++++ hotplug2-201.patched/workers/worker_fork.h 2010-04-03 01:00:24.000000000 +0300
+@@ -35,4 +35,9 @@
+ struct settings_t *settings;
+ };
+
++struct worker_fork_uevent_t {
++ struct uevent_t *uevent;
++ struct worker_fork_uevent_t *next;
++};
++
+ #endif
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