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/*
* Copyright (C) 2013 Felix Fietkau <nbd@openwrt.org>
* Copyright (C) 2013 John Crispin <blogic@openwrt.org>
*
* 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 <sys/utsname.h>
#include <sys/ioctl.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <unistd.h>
#include <libubox/uloop.h>
#include "procd.h"
#include "watchdog.h"
#define HOSTNAME_PATH "/proc/sys/kernel/hostname"
static struct blob_buf b;
static char *board_name;
static char *board_model;
static int system_info(struct ubus_context *ctx, struct ubus_object *obj,
struct ubus_request_data *req, const char *method,
struct blob_attr *msg)
{
struct timespec ts;
struct utsname uts;
blob_buf_init(&b, 0);
if (board_name && board_model) {
blobmsg_add_string(&b, "boardname", board_name);
blobmsg_add_string(&b, "boardmodel", board_model);
}
if (!uname(&uts)) {
blobmsg_add_string(&b, "hostname", uts.nodename);
blobmsg_add_string(&b, "machine", uts.machine);
blobmsg_add_string(&b, "kernel", uts.release);
}
if (!clock_gettime(CLOCK_MONOTONIC, &ts))
blobmsg_add_u32(&b, "uptime", ts.tv_sec);
ubus_send_reply(ctx, req, b.head);
return 0;
}
enum {
WDT_FREQUENCY,
WDT_TIMEOUT,
__WDT_MAX
};
static const struct blobmsg_policy watchdog_policy[__WDT_MAX] = {
[WDT_FREQUENCY] = { .name = "frequency", .type = BLOBMSG_TYPE_INT32 },
[WDT_TIMEOUT] = { .name = "timeout", .type = BLOBMSG_TYPE_INT32 },
};
static int watchdog_set(struct ubus_context *ctx, struct ubus_object *obj,
struct ubus_request_data *req, const char *method,
struct blob_attr *msg)
{
struct blob_attr *tb[__WDT_MAX];
if (!msg)
return UBUS_STATUS_INVALID_ARGUMENT;
blobmsg_parse(watchdog_policy, __WDT_MAX, tb, blob_data(msg), blob_len(msg));
if (tb[WDT_FREQUENCY]) {
unsigned int timeout = watchdog_timeout(0);
unsigned int freq = blobmsg_get_u32(tb[WDT_FREQUENCY]);
if (freq) {
if (freq > timeout / 2)
freq = timeout / 2;
watchdog_frequency(freq);
}
}
if (tb[WDT_TIMEOUT]) {
unsigned int timeout = blobmsg_get_u32(tb[WDT_TIMEOUT]);
unsigned int frequency = watchdog_frequency(0);
if (timeout <= frequency)
timeout = frequency * 2;
watchdog_timeout(timeout);
}
blob_buf_init(&b, 0);
blobmsg_add_string(&b, "status", (watchdog_fd() >= 0) ? ("running") : ("offline"));
blobmsg_add_u32(&b, "timeout", watchdog_timeout(0));
blobmsg_add_u32(&b, "frequency", watchdog_frequency(0));
ubus_send_reply(ctx, req, b.head);
return 0;
}
static const struct ubus_method system_methods[] = {
UBUS_METHOD_NOARG("info", system_info),
UBUS_METHOD("watchdog", watchdog_set, watchdog_policy),
};
static struct ubus_object_type system_object_type =
UBUS_OBJECT_TYPE("system", system_methods);
static struct ubus_object system_object = {
.name = "system",
.type = &system_object_type,
.methods = system_methods,
.n_methods = ARRAY_SIZE(system_methods),
};
static char* load_file_content(const char *file)
{
char buf[32];
int fd, r;
fd = open(file, O_RDONLY);
if (!fd)
return NULL;
r = read(fd, buf, sizeof(buf) - 1);
close(fd);
if (r < 1)
return NULL;
if (buf[r - 1] == '\n')
buf[r - 1] = '\0';
else
buf[r] = '\0';
return strdup(buf);
}
void ubus_init_system(struct ubus_context *ctx)
{
int ret;
if (!board_model)
board_model = load_file_content("/tmp/sysinfo/model");
if (!board_name);
board_name = load_file_content("/tmp/sysinfo/board_name");
ret = ubus_add_object(ctx, &system_object);
if (ret)
ERROR("Failed to add object: %s\n", ubus_strerror(ret));
}
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