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Subject[PATCH 11/29] staging: lustre: lnet: make sure lnet data not greater than LIBCFS_IOC_DATA_MAX
Date
From: Liang Zhen <liang.zhen@intel.com>

Fail to compile if largest LNet user land data structures passed
to kernel are larger than LIBCFS_IOC_DATA_MAX

Signed-off-by: Liang Zhen <liang.zhen@intel.com>
Intel-bug-id: https://jira.hpdd.intel.com/browse/LU-5435
Reviewed-on: http://review.whamcloud.com/11313
Reviewed-by: Bobi Jam <bobijam@gmail.com>
Reviewed-by: Johann Lombardi <johann.lombardi@intel.com>
Reviewed-by: Oleg Drokin <oleg.drokin@intel.com>
---
drivers/staging/lustre/lnet/lnet/api-ni.c | 4 ++++
1 files changed, 4 insertions(+), 0 deletions(-)

diff --git a/drivers/staging/lustre/lnet/lnet/api-ni.c b/drivers/staging/lustre/lnet/lnet/api-ni.c
index 8764755..f825784 100644
--- a/drivers/staging/lustre/lnet/lnet/api-ni.c
+++ b/drivers/staging/lustre/lnet/lnet/api-ni.c
@@ -1864,6 +1864,10 @@ LNetCtl(unsigned int cmd, void *arg)
int rc;
unsigned long secs_passed;

+ BUILD_BUG_ON(LIBCFS_IOC_DATA_MAX <
+ sizeof(struct lnet_ioctl_net_config) +
+ sizeof(struct lnet_ioctl_config_data));
+
switch (cmd) {
case IOC_LIBCFS_GET_NI:
rc = LNetGetId(data->ioc_count, &id);
--
1.7.1
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