net.c: Remove unnecessary crypto includes.
[paraslash.git] / write_common.c
index 6cd7ed2..5988faf 100644 (file)
@@ -1,5 +1,5 @@
 /*
 /*
- * Copyright (C) 2006-2010 Andre Noll <maan@systemlinux.org>
+ * Copyright (C) 2006-2011 Andre Noll <maan@systemlinux.org>
  *
  * Licensed under the GPL v2. For licencing details see COPYING.
  */
  *
  * Licensed under the GPL v2. For licencing details see COPYING.
  */
@@ -66,27 +66,32 @@ void *check_writer_arg(const char *wa, int *writer_num)
                c = wa[len];
                if (c && c != ' ')
                        continue;
                c = wa[len];
                if (c && c != ' ')
                        continue;
-               if (c && !writers[i].parse_config)
-                       return NULL;
                *writer_num = i;
                *writer_num = i;
-               return writers[i].parse_config(c? wa + len + 1 : "");
+               return writers[i].parse_config_or_die(c? wa + len + 1 : "");
        }
        PARA_ERROR_LOG("writer not found\n");
        return NULL;
 }
 
        }
        PARA_ERROR_LOG("writer not found\n");
        return NULL;
 }
 
+/**
+ * Open a writer node and register the corresponding task.
+ *
+ * \param wn The writer node to open.
+ * \param parent The parent btr node (the source for the writer node).
+ *
+ * The configuration of the writer node stored in \p wn->conf must be
+ * initialized before this function may be called.
+ */
 void register_writer_node(struct writer_node *wn, struct btr_node *parent)
 {
        struct writer *w = writers + wn->writer_num;
        char *name = make_message("%s writer", writer_names[wn->writer_num]);
 void register_writer_node(struct writer_node *wn, struct btr_node *parent)
 {
        struct writer *w = writers + wn->writer_num;
        char *name = make_message("%s writer", writer_names[wn->writer_num]);
-       int ret;
 
        wn->btrn = btr_new_node(&(struct btr_node_description)
                EMBRACE(.name = name, .parent = parent,
                .handler = w->execute, .context = wn));
        strcpy(wn->task.status, name);
        free(name);
 
        wn->btrn = btr_new_node(&(struct btr_node_description)
                EMBRACE(.name = name, .parent = parent,
                .handler = w->execute, .context = wn));
        strcpy(wn->task.status, name);
        free(name);
-       ret = w->open(wn);
        wn->task.post_select = w->post_select;
        wn->task.pre_select = w->pre_select;
        register_task(&wn->task);
        wn->task.post_select = w->post_select;
        wn->task.pre_select = w->pre_select;
        register_task(&wn->task);
@@ -115,7 +120,7 @@ int setup_writer_node(const char *arg, struct btr_node *parent,
                wn->conf = check_writer_arg(arg, &wn->writer_num);
        else {
                wn->writer_num = DEFAULT_WRITER;
                wn->conf = check_writer_arg(arg, &wn->writer_num);
        else {
                wn->writer_num = DEFAULT_WRITER;
-               wn->conf = writers[DEFAULT_WRITER].parse_config("");
+               wn->conf = writers[DEFAULT_WRITER].parse_config_or_die("");
        }
        if (!wn->conf)
                return -E_WRITE_COMMON_SYNTAX;
        }
        if (!wn->conf)
                return -E_WRITE_COMMON_SYNTAX;
@@ -123,7 +128,6 @@ int setup_writer_node(const char *arg, struct btr_node *parent,
        return 1;
 }
 
        return 1;
 }
 
-
 /**
  * Print the help text of all writers to stdout.
  *
 /**
  * Print the help text of all writers to stdout.
  *
@@ -153,7 +157,15 @@ static void get_btr_value(struct btr_node *btrn, const char *cmd,
        char *buf = NULL;
        int ret = btr_exec_up(btrn, cmd, &buf);
 
        char *buf = NULL;
        int ret = btr_exec_up(btrn, cmd, &buf);
 
-       assert(ret >= 0);
+       if (ret < 0) {
+               /*
+                * This really should not happen. It means one of our parent
+                * nodes died unexpectedly. Proceed with fingers crossed.
+                */
+               PARA_CRIT_LOG("cmd %s: %s\n", cmd, para_strerror(-ret));
+               *result = 0;
+               return;
+       }
        ret = para_atoi32(buf, result);
        assert(ret >= 0);
        free(buf);
        ret = para_atoi32(buf, result);
        assert(ret >= 0);
        free(buf);
@@ -163,7 +175,7 @@ static void get_btr_value(struct btr_node *btrn, const char *cmd,
  * Ask parent btr nodes for the sample rate of the current stream.
  *
  * \param btrn Where to start the search.
  * Ask parent btr nodes for the sample rate of the current stream.
  *
  * \param btrn Where to start the search.
- * \param result. Filled in by this function.
+ * \param result Filled in by this function.
  *
  * This function is assumed to succeed and terminates on errors.
  */
  *
  * This function is assumed to succeed and terminates on errors.
  */