From a8152cb5f25726bfbbd063d8c2dcddd0c7b36a0d Mon Sep 17 00:00:00 2001 From: John Crispin Date: Fri, 8 Mar 2013 23:46:22 +0100 Subject: [PATCH] add coldplug handler --- coldplug.c | 66 ++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 66 insertions(+) create mode 100644 coldplug.c diff --git a/coldplug.c b/coldplug.c new file mode 100644 index 0000000..d5997f8 --- /dev/null +++ b/coldplug.c @@ -0,0 +1,66 @@ +/* + * Copyright (C) 2013 Felix Fietkau + * Copyright (C) 2013 John Crispin + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU Lesser General Public License version 2.1 + * as published by the Free Software Foundation + * + * This program 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. + */ + +#include +#include +#include + +#include +#include + +#include "procd.h" +#include "hotplug.h" + +static struct uloop_process udevtrigger; + +static void coldplug_complete(struct uloop_timeout *t) +{ + DEBUG(2, "Coldplug complete\n"); + hotplug_last_event(NULL); + procd_state_next(); +} + +static void udevtrigger_complete(struct uloop_process *proc, int ret) +{ + DEBUG(2, "Finished udevtrigger\n"); +} + +void procd_coldplug(void) +{ + char *argv[] = { "udevtrigger", NULL }; + + umount2("/dev/pts", MNT_DETACH); + umount2("/dev/", MNT_DETACH); + mount("tmpfs", "/dev", "tmpfs", 0, "mode=0755,size=512K"); + mkdir("/dev/shm", 0755); + mkdir("/dev/pts", 0755); + mount("devpts", "/dev/pts", "devpts", 0, 0); + udevtrigger.cb = udevtrigger_complete; + udevtrigger.pid = fork(); + if (!udevtrigger.pid) { + execvp(argv[0], argv); + ERROR("Failed to start coldplug\n"); + exit(-1); + } + + if (udevtrigger.pid <= 0) { + ERROR("Failed to start new coldplug instance\n"); + return; + } + + hotplug_last_event(coldplug_complete); + uloop_process_add(&udevtrigger); + + DEBUG(2, "Launched coldplug instance, pid=%d\n", (int) udevtrigger.pid); +} -- 2.25.1