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staging/lustre/libcfs: Copy correct amount in libcfs_ioctl_getdata 

Commit b8ff756bc351 ("staging: lustre: libcfs: merge code from
libcfs_ioctl into libcfs_ioctl_getdata") introduced a problem
copying just a single pointer worth of data from userspace
instead of whole libcfs_ioctl_hdr structure.
Adjust the copying amount.

Signed-off-by: Oleg Drokin <green@linuxhacker.ru>
Acked-by: James Simmons <jsimmons@infradead.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Oleg Drokin 2016-03-27 12:05:03 -04:00 committed by Greg Kroah-Hartman
parent 1bc55f796a
commit 78ab125e63
1 changed files with 1 additions and 1 deletions
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2
drivers/staging/lustre/lnet/libcfs/linux/linux-module.c
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@ -128,7 +128,7 @@ int libcfs_ioctl_getdata(struct libcfs_ioctl_hdr **hdr_pp,
struct libcfs_ioctl_hdr hdr;
int err = 0;
if (copy_from_user(&hdr, uhdr, sizeof(uhdr)))
if (copy_from_user(&hdr, uhdr, sizeof(hdr)))
return -EFAULT;
if (hdr.ioc_version != LIBCFS_IOCTL_VERSION &&