Messages in this thread | | | Date | Tue, 5 Dec 2006 15:32:54 -0500 | From | Chuck Ebbert <> | Subject | Re: BUG? atleast >=2.6.19-rc5, x86 chroot on x86_64 |
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In-Reply-To: <4701.1165328393@redhat.com>
On Tue, 05 Dec 2006 14:19:53 +0000, David Howells wrote: > > Here is a patch to reverse that. Kasper, can you test it? > > (Your filesystem is on a FAT/VFAT volume, I assume.) > > Please don't revert that patch. If you do, you'll break CONFIG_BLOCK=n. > > Can you compile and run the attached program as both 32-bit and 64-bit?
I only have 32-bit userspace. When I run your program against a directory on a JFS filesystem (msdos ioctls not supported) I get this on vanilla 2.6.19:
$ ./vfat_ioctl32.ex . 268 : 82187201, 82187202 268 : 82187201, 82187202 Calling VFAT_IOCTL_READDIR_BOTH32 ioctl: Invalid argument Calling VFAT_IOCTL_READDIR_BOTH ioctl: Invalid argument
After reverting the msdos compat ioctls patch it changes to:
$ ./vfat_ioctl32.ex . 268 : 82187201, 82187202 268 : 82187201, 82187202 Calling VFAT_IOCTL_READDIR_BOTH32 ioctl: Inappropriate ioctl for device Calling VFAT_IOCTL_READDIR_BOTH ioctl: Inappropriate ioctl for device
> | i have only tested with >=rc5, thw folling, as an example, appears in > | dmesg: > | ioctl32(regedit.exe:11801): Unknown cmd fd(9) cmd(82187201){02} > | arg(00221000) on /home/redeeman > | ioctl32(regedit.exe:11801): Unknown cmd fd(9) cmd(82187201){02} > | arg(00221000) on /home/redeeman/.wine/drive_c/windows/system32 > | ioctl32(regedit.exe:11801): Unknown cmd fd(9) cmd(82187201){02} > | arg(00221000) on /home/redeeman/.wine/drive_c/windows/system > > How do you get that?
I get those messages when the ioctl call returns 'invalid argument.'
In fs/compat.s::compat_sys_ioctl() you can see it changing the return value after it prints the message:
static int count;
if (++count <= 50) compat_ioctl_error(filp, fd, cmd, arg); error = -EINVAL;
So apparently this is a feature?
-- Chuck "Even supernovas have their duller moments."
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