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Signed-off-by: Stepan Kasal <skasal@redhat.com>
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/sbin/hwclock is supposed to fall back to using /dev/rtc0 if /dev/rtc isn't
working (which it isn't, because mkinitrd creates it with the old device
numbers, and we're switching to the new RTC_CLASS driver).
Unfortunately, it'll only cope if the error it gets is ENOENT (i.e. the device
node doesn't exist). It doesn't fall back to the next device in the list if the
error is ENODEV, which is what happens when the device node exists, but there's
no driver.
Signed-off-by: David Woodhouse <dwmw2@infradead.org>
Signed-off-by: Karel Zak <kzak@redhat.com>
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When hwclock --hctosys is started very early during the system startup,
with / still mounted read-only, and there was no /etc/adjtime file,
hwclock fails creating a default adjfile full of zeroes, and prints an
error message. I believe that such zero adjfile is not necessary,
because it means exactly the same as no adjfile at all.
The attached patch prevents creation of a zero adjfile, of course unless
something gets changed (this never happens during a --hctosys).
Signed-off-by: Alain Guibert <alguibert+ulng@free.fr>
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The --rtc option does not set the name of the device correctly.
It still uses /dev/rtc even if the --rtc option is given.
Testcase:
$ mv /dev/rtc /dev/foo
$ hwclock --show --debug --rtc=/dev/foo
hwclock from util-linux-2.13-rc2
Using /dev interface to clock.
Last drift adjustment done at 1190198135 seconds after 1969
Last calibration done at 1190198135 seconds after 1969
Hardware clock is on local time
Assuming hardware clock is kept in local time.
Waiting for clock tick...
hwclock: open() of /dev/rtc failed, errno=2: No such file or directory.
...got clock tick
Co-Author: Karel Zak <kzak@redhat.com>
Signed-off-by: Matthias Koenig <mkoenig@suse.de>
Signed-off-by: Karel Zak <kzak@redhat.com>
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We have PACKAGE_STRING in config.h that includes package name and
version. It's better to use this macro that hardcoded strings.
Signed-off-by: Karel Zak <kzak@redhat.com>
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Signed-off-by: Karel Zak <kzak@redhat.com>
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Wildcards in EXTRA_DIST break "make dist" for vpath build.
But plain directory names are ok.
Signed-off-by: Stepan Kasal <skasal@redhat.com>
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Signed-off-by: Karel Zak <kzak@redhat.com>
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Signed-off-by: Karel Zak <kzak@redhat.com>
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If you compile --with-audit the hwclock tool reports changes in sys/hw clock to
audit system. The real long-term and final solution is probably add hooks for
/dev/rtc to kernel, but it's not implemented yet.
Signed-off-by: Steve Grubb <sgrubb@redhat.com>
Signed-off-by: Karel Zak <kzak@redhat.com>
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quote from rh150493:
The kernel code, when setting the BIOS clock notes that the clock time
ticks to the next second 0.5 seconds after adjusting it (see
linux/arch/i386/kernel/time.c).
hwclock --systohc sets the CMOS clock at the 1 second boundry and thus
causes the clock to be wrong by 500ms each time it is reset. If the
clock is set every shutdown then the clock will have a reboot-count
related drift as well as the natural drift problems of the clock. Note
that this also mucks up the drift calculations, of course.
Signed-off-by: Karel Zak <kzak@redhat.com>
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The patch to allow "hwclock --rtc /dev/rtc1" and so on,
since "/dev/rtc" may not be there and "/dev/rtc0" may not be
the right answer either.
The "--rtc" is compatible with next Bryan Henderson's hwclock
versions.
Signed-off-by: David Brownell <david-b@pacbell.net>
Signed-off-by: Karel Zak <kzak@redhat.com>
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Also, the patch makes "make mrproper" more robust.
Signed-off-by: Karel Zak <kzak@redhat.com>
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This patch add all missing headers, man pages and README files to automake
stuff and "make dist-gzip" produces useful tarball now.
Signed-off-by: Karel Zak <kzak@redhat.com>
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The generated autotools stuff shouldn't be maintained by SCM. After check out
from git use ./autogen.sh. For more details see README.devel.
Signed-off-by: Karel Zak <kzak@redhat.com>
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