From 3f00171125384b46e5088b7d7a5d0b3e6972f1ee Mon Sep 17 00:00:00 2001 From: Atsushi Nemoto Date: Sun, 10 Jan 2010 23:29:16 +0900 Subject: compat_ioctl: Supress "unknown cmd" message on serial /dev/console 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 Cc: Arnd Bergmann Signed-off-by: Greg Kroah-Hartman --- fs/compat_ioctl.c | 3 +++ 1 file changed, 3 insertions(+) (limited to 'fs') diff --git a/fs/compat_ioctl.c b/fs/compat_ioctl.c index 332dd00f0894..c5c45de1a2ee 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) -- cgit v1.2.3