Messages in this thread Patch in this message | | | From | Greg Kroah-Hartman <> | Subject | [PATCH 1/8] compat_ioctl: Supress "unknown cmd" message on serial /dev/console | Date | Wed, 20 Jan 2010 15:49:56 -0800 |
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From: Atsushi Nemoto <anemo@mba.ocn.ne.jp>
After the commit fb07a5f8 ("compat_ioctl: remove all VT ioctl handling"), I got this error message on 64-bit mips kernel with 32-bit busybox userland:
ioctl32(init:1): Unknown cmd fd(0) cmd(00005600){t:'V';sz:0} arg(7fd76480) on /dev/console
The cmd 5600 is VT_OPENQRY. The busybox's init issues this ioctl to know vt-console or serial-console. If the console was serial console, VT ioctls are not handled by the serial driver.
And by quick search, I found some programs using VT_GETMODE to check vt-console is available or not.
Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp> Cc: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de> --- fs/compat_ioctl.c | 3 +++ 1 files changed, 3 insertions(+), 0 deletions(-)
diff --git a/fs/compat_ioctl.c b/fs/compat_ioctl.c index 332dd00..c5c45de 100644 --- a/fs/compat_ioctl.c +++ b/fs/compat_ioctl.c @@ -1005,6 +1005,9 @@ COMPATIBLE_IOCTL(SCSI_IOCTL_SEND_COMMAND) COMPATIBLE_IOCTL(SCSI_IOCTL_PROBE_HOST) COMPATIBLE_IOCTL(SCSI_IOCTL_GET_PCI) #endif +/* Big V (don't complain on serial console) */ +IGNORE_IOCTL(VT_OPENQRY) +IGNORE_IOCTL(VT_GETMODE) /* Little p (/dev/rtc, /dev/envctrl, etc.) */ COMPATIBLE_IOCTL(RTC_AIE_ON) COMPATIBLE_IOCTL(RTC_AIE_OFF) -- 1.6.5.7
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