fade: Print the mixer device.
[paraslash.git] / afs.c
diff --git a/afs.c b/afs.c
index b83fa23..2b748f2 100644 (file)
--- a/afs.c
+++ b/afs.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2007-2009 Andre Noll <maan@systemlinux.org>
+ * Copyright (C) 2007-2010 Andre Noll <maan@systemlinux.org>
  *
  * Licensed under the GPL v2. For licencing details see COPYING.
  */
@@ -709,15 +709,16 @@ static void signal_pre_select(struct sched *s, struct task *t)
 
 static void afs_signal_post_select(struct sched *s, struct task *t)
 {
-       struct signal_task *st = container_of(t, struct signal_task, task);
+       int signum;
+
        if (getppid() == 1) {
                PARA_EMERG_LOG("para_server died\n");
                goto shutdown;
        }
-       if (!FD_ISSET(st->fd, &s->rfds))
+       signum = para_next_signal(&s->rfds);
+       if (signum == 0)
                return;
-       st->signum = para_next_signal();
-       if (st->signum == SIGHUP) {
+       if (signum == SIGHUP) {
                close_afs_tables();
                parse_config_or_die(1);
                t->error = open_afs_tables();
@@ -726,7 +727,7 @@ static void afs_signal_post_select(struct sched *s, struct task *t)
                init_admissible_files(current_mop);
                return;
        }
-       PARA_EMERG_LOG("terminating on signal %d\n", st->signum);
+       PARA_EMERG_LOG("terminating on signal %d\n", signum);
 shutdown:
        sched_shutdown();
        t->error = -E_AFS_SIGNAL;
@@ -842,57 +843,56 @@ static int call_callback(int fd, int query_shmid)
        return shm_detach(query_shm);
 }
 
-static int execute_server_command(void)
+static int execute_server_command(fd_set *rfds)
 {
        char buf[8];
-       int ret = recv_bin_buffer(server_socket, buf, sizeof(buf) - 1);
+       size_t n;
+       int ret = read_nonblock(server_socket, buf, sizeof(buf) - 1, rfds, &n);
 
-       if (ret <= 0) {
-               if (!ret)
-                       ret = -ERRNO_TO_PARA_ERROR(ECONNRESET);
-               goto err;
-       }
-       buf[ret] = '\0';
-       PARA_DEBUG_LOG("received: %s\n", buf);
-       ret = -E_BAD_CMD;
+       if (ret < 0 || n == 0)
+               return ret;
+       buf[n] = '\0';
        if (strcmp(buf, "new"))
-               goto err;
-       ret = open_next_audio_file();
-err:
-       return ret;
+               return -E_BAD_CMD;
+       return open_next_audio_file();
 }
 
-static void execute_afs_command(int fd, uint32_t expected_cookie)
+/* returns 0 if no data available, 1 else */
+static int execute_afs_command(int fd, fd_set *rfds, uint32_t expected_cookie)
 {
        uint32_t cookie;
        int query_shmid;
        char buf[sizeof(cookie) + sizeof(query_shmid)];
-       int ret = recv_bin_buffer(fd, buf, sizeof(buf));
+       size_t n;
+       int ret = read_nonblock(fd, buf, sizeof(buf), rfds, &n);
 
        if (ret < 0)
                goto err;
-       if (ret != sizeof(buf)) {
+       if (n == 0)
+               return 0;
+       if (n != sizeof(buf)) {
                PARA_NOTICE_LOG("short read (%d bytes, expected %lu)\n",
                        ret, (long unsigned) sizeof(buf));
-               return;
+               return 1;
        }
        cookie = *(uint32_t *)buf;
        if (cookie != expected_cookie) {
-               PARA_NOTICE_LOG("received invalid cookie(got %u, expected %u)\n",
+               PARA_NOTICE_LOG("received invalid cookie (got %u, expected %u)\n",
                        (unsigned)cookie, (unsigned)expected_cookie);
-               return;
+               return 1;
        }
        query_shmid = *(int *)(buf + sizeof(cookie));
        if (query_shmid < 0) {
                PARA_WARNING_LOG("received invalid query shmid %d)\n",
                        query_shmid);
-               return;
+               return 1;
        }
        ret = call_callback(fd, query_shmid);
        if (ret >= 0)
-               return;
+               return 1;
 err:
        PARA_NOTICE_LOG("%s\n", para_strerror(-ret));
+       return 1;
 }
 
 /** Shutdown connection if query has not arrived until this many seconds. */
@@ -905,20 +905,16 @@ static void command_post_select(struct sched *s, struct task *t)
        struct afs_client *client, *tmp;
        int fd, ret;
 
-       if (FD_ISSET(server_socket, &s->rfds)) {
-               ret = execute_server_command();
-               if (ret < 0) {
-                       PARA_EMERG_LOG("%s\n", para_strerror(-ret));
-                       sched_shutdown();
-                       return;
-               }
+       ret = execute_server_command(&s->rfds);
+       if (ret < 0) {
+               PARA_EMERG_LOG("%s\n", para_strerror(-ret));
+               sched_shutdown();
+               return;
        }
-
        /* Check the list of connected clients. */
        list_for_each_entry_safe(client, tmp, &afs_client_list, node) {
-               if (FD_ISSET(client->fd, &s->rfds))
-                       execute_afs_command(client->fd, ct->cookie);
-               else { /* prevent bogus connection flooding */
+               ret = execute_afs_command(client->fd, &s->rfds, ct->cookie);
+               if (ret == 0) { /* prevent bogus connection flooding */
                        struct timeval diff;
                        tv_diff(now, &client->connect_time, &diff);
                        if (diff.tv_sec < AFS_CLIENT_TIMEOUT)
@@ -930,14 +926,11 @@ static void command_post_select(struct sched *s, struct task *t)
                free(client);
        }
        /* Accept connections on the local socket. */
-       if (!FD_ISSET(ct->fd, &s->rfds))
-               return;
-       ret = para_accept(ct->fd, &unix_addr, sizeof(unix_addr));
-       if (ret < 0) {
+       ret = para_accept(ct->fd, &s->rfds, &unix_addr, sizeof(unix_addr), &fd);
+       if (ret < 0)
                PARA_NOTICE_LOG("%s\n", para_strerror(-ret));
+       if (ret <= 0)
                return;
-       }
-       fd = ret;
        ret = mark_fd_nonblocking(fd);
        if (ret < 0) {
                PARA_NOTICE_LOG("%s\n", para_strerror(-ret));