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| author | Atsushi Nemoto <anemo@mba.ocn.ne.jp> | 2010-01-10 23:29:16 +0900 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2010-01-20 15:03:26 -0800 |
| commit | 3f00171125384b46e5088b7d7a5d0b3e6972f1ee (patch) | |
| tree | d806f7ac7b189192459645fd4cbda5120fa11f90 /fs/compat_ioctl.c | |
| parent | 24bc7347da73a9ed3383056c3d0f28c0e361621e (diff) | |
| download | lwn-3f00171125384b46e5088b7d7a5d0b3e6972f1ee.tar.gz lwn-3f00171125384b46e5088b7d7a5d0b3e6972f1ee.zip | |
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 <anemo@mba.ocn.ne.jp>
Cc: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'fs/compat_ioctl.c')
| -rw-r--r-- | 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 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) |