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From 006aca565d4c8565baf05296b8e65ca4d5f203d3 Mon Sep 17 00:00:00 2001
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From: Hans de Goede <hdegoede@redhat.com>
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Date: Fri, 30 Jul 2021 13:22:54 +0200
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Subject: wdctl: Workaround reported boot-status bits not being present in
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wd->ident.options
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Some watchdog drivers are capable of reporting WDIOF_CARDRESET in their
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bootstatus, but they do not advertise this in the options field
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returned by the WDIOC_GETSUPPORT ioctl.
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This causes wdctl to not print the CARDRESET flag on these devices,
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even when the reset was caused by the watchdog and this is being
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reported in the WDIOC_GETBOOTSTATUS return.
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Add a workaround by or-ing any bits which are set in the status and
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bstatus returns into wd->ident.options so that reported flags will
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get printend independent of them being advertised as supported in
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wd->ident.options.
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This will make wdctl print a CARDRESET line when the system was
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actually reset by the watchdog while omitting it when it was not
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reset by the watchdog. At least on drivers which have the
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CARDRESET is missing from info.options problem. On other drivers
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the CARDRESET line will always be printend, but the actual reported
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value will change.
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Upstream: http://github.com/util-linux/util-linux/commit/b1b0259fe42aad1bf0997ce1c03a020ce59e38ab
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Addresses: https://bugzilla.redhat.com/show_bug.cgi?id=2057046
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Signed-off-by: Hans de Goede <hdegoede@redhat.com>
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---
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sys-utils/wdctl.c | 7 +++++++
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1 file changed, 7 insertions(+)
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diff --git a/sys-utils/wdctl.c b/sys-utils/wdctl.c
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index 8de5d5a2d..6b9affa0a 100644
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--- a/sys-utils/wdctl.c
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+++ b/sys-utils/wdctl.c
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@@ -419,6 +419,13 @@ static int read_watchdog_from_device(struct wd_device *wd)
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ioctl(fd, WDIOC_GETSTATUS, &wd->status);
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ioctl(fd, WDIOC_GETBOOTSTATUS, &wd->bstatus);
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+ /*
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+ * Sometimes supported options like WDIOF_CARDRESET are missing from
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+ * ident.options, add anything set in status/bstatus to ident.options.
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+ */
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+ wd->ident.options |= wd->status;
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+ wd->ident.options |= wd->bstatus;
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+
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if (ioctl(fd, WDIOC_GETTIMEOUT, &wd->timeout) >= 0)
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wd->has_timeout = 1;
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if (ioctl(fd, WDIOC_GETPRETIMEOUT, &wd->pretimeout) >= 0)
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--
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2.34.1
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