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-rw-r--r--src/shared/watchdog.c169
1 files changed, 0 insertions, 169 deletions
diff --git a/src/shared/watchdog.c b/src/shared/watchdog.c
deleted file mode 100644
index 13265e7692..0000000000
--- a/src/shared/watchdog.c
+++ /dev/null
@@ -1,169 +0,0 @@
-/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
-
-/***
- This file is part of systemd.
-
- Copyright 2012 Lennart Poettering
-
- systemd is free software; you can redistribute it and/or modify it
- under the terms of the GNU Lesser General Public License as published by
- the Free Software Foundation; either version 2.1 of the License, or
- (at your option) any later version.
-
- systemd 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
- Lesser General Public License for more details.
-
- You should have received a copy of the GNU Lesser General Public License
- along with systemd; If not, see <http://www.gnu.org/licenses/>.
-***/
-
-#include <sys/ioctl.h>
-#include <errno.h>
-#include <fcntl.h>
-#include <unistd.h>
-#include <linux/watchdog.h>
-
-#include "watchdog.h"
-#include "log.h"
-
-static int watchdog_fd = -1;
-static usec_t watchdog_timeout = (usec_t) -1;
-
-static int update_timeout(void) {
- int r;
-
- if (watchdog_fd < 0)
- return 0;
-
- if (watchdog_timeout == (usec_t) -1)
- return 0;
- else if (watchdog_timeout == 0) {
- int flags;
-
- flags = WDIOS_DISABLECARD;
- r = ioctl(watchdog_fd, WDIOC_SETOPTIONS, &flags);
- if (r < 0) {
- log_warning("Failed to disable hardware watchdog: %m");
- return -errno;
- }
- } else {
- int sec, flags;
- char buf[FORMAT_TIMESPAN_MAX];
-
- sec = (int) ((watchdog_timeout + USEC_PER_SEC - 1) / USEC_PER_SEC);
- r = ioctl(watchdog_fd, WDIOC_SETTIMEOUT, &sec);
- if (r < 0) {
- log_warning("Failed to set timeout to %is: %m", sec);
- return -errno;
- }
-
- watchdog_timeout = (usec_t) sec * USEC_PER_SEC;
- log_info("Set hardware watchdog to %s.", format_timespan(buf, sizeof(buf), watchdog_timeout));
-
- flags = WDIOS_ENABLECARD;
- r = ioctl(watchdog_fd, WDIOC_SETOPTIONS, &flags);
- if (r < 0) {
- log_warning("Failed to enable hardware watchdog: %m");
- return -errno;
- }
-
- r = ioctl(watchdog_fd, WDIOC_KEEPALIVE, 0);
- if (r < 0) {
- log_warning("Failed to ping hardware watchdog: %m");
- return -errno;
- }
- }
-
- return 0;
-}
-
-static int open_watchdog(void) {
- struct watchdog_info ident;
-
- if (watchdog_fd >= 0)
- return 0;
-
- watchdog_fd = open("/dev/watchdog", O_WRONLY|O_CLOEXEC);
- if (watchdog_fd < 0)
- return -errno;
-
- if (ioctl(watchdog_fd, WDIOC_GETSUPPORT, &ident) >= 0)
- log_info("Hardware watchdog '%s', version %x",
- ident.identity,
- ident.firmware_version);
-
- return update_timeout();
-}
-
-int watchdog_set_timeout(usec_t *usec) {
- int r;
-
- watchdog_timeout = *usec;
-
- /* If we didn't open the watchdog yet and didn't get any
- * explicit timeout value set, don't do anything */
- if (watchdog_fd < 0 && watchdog_timeout == (usec_t) -1)
- return 0;
-
- if (watchdog_fd < 0)
- r = open_watchdog();
- else
- r = update_timeout();
-
- *usec = watchdog_timeout;
-
- return r;
-}
-
-int watchdog_ping(void) {
- int r;
-
- if (watchdog_fd < 0) {
- r = open_watchdog();
- if (r < 0)
- return r;
- }
-
- r = ioctl(watchdog_fd, WDIOC_KEEPALIVE, 0);
- if (r < 0) {
- log_warning("Failed to ping hardware watchdog: %m");
- return -errno;
- }
-
- return 0;
-}
-
-void watchdog_close(bool disarm) {
- int r;
-
- if (watchdog_fd < 0)
- return;
-
- if (disarm) {
- int flags;
-
- /* Explicitly disarm it */
- flags = WDIOS_DISABLECARD;
- r = ioctl(watchdog_fd, WDIOC_SETOPTIONS, &flags);
- if (r < 0)
- log_warning("Failed to disable hardware watchdog: %m");
-
- /* To be sure, use magic close logic, too */
- for (;;) {
- static const char v = 'V';
-
- if (write(watchdog_fd, &v, 1) > 0)
- break;
-
- if (errno != EINTR) {
- log_error("Failed to disarm watchdog timer: %m");
- break;
- }
- }
- }
-
- close_nointr_nofail(watchdog_fd);
- watchdog_fd = -1;
-}