From 1bfa33ac7c167cd863b88a5cac7690d511851e6e Mon Sep 17 00:00:00 2001
From: Sergey Poznyakoff <gray@gnu.org.ua>
Date: Sun, 6 Jan 2013 17:04:28 +0200
Subject: Fix runlevel transition algorithm, implement SysV-style fifo
 interface.

* src/prog.h: New file.
* src/Makefile.am: Add new file.
* src/cmdline.opt: New option --telinit (-T).
* src/diag.c (vlogmsg): In sysvin it mode, write
directly to the console. Close it when finished.
* src/pies.c (_cb_initdefault, _cb_runlevels): Use is_valid_runlevel
to check if the specified runlevels are ok.
(main): In sysvinit mode, reset action to ACTION_CONT.
* src/pies.h (progman_filter): New proto.
(progman_accept,register_socket): Change signature.
(deregister_socket): New proto.
(register_program_socket): New proto.
* src/progman.c: Move constant and adatatype definitions to
prog.h
(prog_stop): Remove static qualifier.
(console_open): Likewise.
(progman_accept): Use new socket API.
(progman_stop): Correctly handle timeouts.
(progman_foreach): New function.
* src/socket.c: Register all sockets along with their handlers
in a doubly-linked list.
(sockinst): New struct.
(register_socket,deregister_socket): New functions.
(register_program_socket): New function.
(pies_pause): Traverse the list to find which fd has changed.
Use its registered handler to handle the event.
* src/sysvinit.c: Include prog.h
(is_valid_runlevel): New function.
(sysvinit_fifo_handler,check_fifo): New static functions.
(inittrans): Fix transition algorithm.
(telinit): New function.
---
 src/prog.h | 85 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 85 insertions(+)
 create mode 100644 src/prog.h

(limited to 'src/prog.h')

diff --git a/src/prog.h b/src/prog.h
new file mode 100644
index 0000000..2fd4c47
--- /dev/null
+++ b/src/prog.h
@@ -0,0 +1,85 @@
+/* This file is part of GNU Pies.
+   Copyright (C) 2008, 2009, 2010, 2011 Sergey Poznyakoff
+
+   GNU Pies is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3, or (at your option)
+   any later version.
+
+   GNU Pies is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with GNU Pies.  If not, see <http://www.gnu.org/licenses/>. */
+
+enum prog_type
+  {
+    TYPE_COMPONENT,
+    TYPE_REDIRECTOR,
+    TYPE_COMMAND
+  };
+
+enum prog_status
+  {
+    status_enabled,    /* Component enabled. prog->pid!=0 shows if it is
+			  actually running */
+    status_disabled,   /* Component is disabled. */
+    status_listener,   /* Component is an inetd listener */
+    status_sleeping,   /* Component is sleeping. An attempt to start it will
+			  be made at prog->v.p.timestamp + SLEEPTIME */
+    status_stopping,   /* Component is being stopped */
+    status_finished,   /* A "once" component has finished */
+  };
+
+struct conn_class
+{
+  const char *tag;
+  union pies_sockaddr_storage sa_storage;
+  size_t sa_len;
+  size_t count;
+};
+
+struct prog
+{
+  struct prog *next, *prev;
+  enum prog_type type;
+  pid_t pid;             /* PID */
+  char *tag;             /* Entry tag (for diagnostics purposes) */
+  char **prereq;
+  int facility;
+  union
+  {
+    struct
+    {
+      struct component *comp;
+      size_t idx;              /* Numeric identifier */
+      int socket;
+      struct prog *redir[2];   /* Pointers to redirectors */
+      time_t timestamp;        /* Time of last startup */
+      size_t failcount;        /* Number of failed starts since timestamp */
+      enum prog_status status; /* Current component status */
+      char *runlevels;
+      /* If status == status_listener: */
+      size_t num_instances;    /* Number of running instances */
+      /* If comp->type == pies_comp_inetd && status == status_enabled */
+      struct prog *listener;
+      union pies_sockaddr_storage sa_storage;
+      size_t sa_len;
+      struct conn_class *cclass;
+    } p;
+    
+    struct
+    {
+      struct prog *master;
+    } r;
+
+    struct
+    {
+      char *command;
+    } c;
+  } v;
+};
+
+void progman_foreach (int (*filter) (struct prog *, void *data), void *data);
-- 
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