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Add compat_ioctl support for VFAT_IOCTL_GET_VOLUME_ID

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Add VFAT_IOCTL_GET_VOLUME_ID to vfat dir compat_ioctl() interface,
which enable you read vfat volume ID from a 32bit app on a 64bit
kernel

Change-Id: I3e93dfcc1e7a364a6b11bc7e3f5f210e82f306ed
Signed-off-by: Bintian Wang <bintian.wang@linaro.org>
Signed-off-by: John Stultz <john.stultz@linaro.org>
This commit is contained in:
Bintian Wang 2013-06-30 20:34:24 +08:00 committed by Colin Cross
parent 2c7011b832
commit 79245d3716
1 changed files with 2 additions and 0 deletions
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2
fs/fat/dir.c
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@ -841,6 +841,8 @@ static long fat_compat_dir_ioctl(struct file *filp, unsigned cmd,
short_only = 0;
both = 1;
break;
case VFAT_IOCTL_GET_VOLUME_ID:
return fat_ioctl_volume_id(inode);
default:
return fat_generic_ioctl(filp, cmd, (unsigned long)arg);
}