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Subject[PATCH 07/19] staging/lustre/llite: deny non-root user for changelog operations
Date
From: Niu Yawei <yawei.niu@intel.com>

To avoid potential security problems, non-privileged users should
have no permission to run 'lfs changelog' & 'lfs changelog_clear'.

Signed-off-by: Niu Yawei <yawei.niu@intel.com>
Reviewed-on: http://review.whamcloud.com/14280
Intel-bug-id: https://jira.hpdd.intel.com/browse/LU-6415
Reviewed-by: Lai Siyao <lai.siyao@intel.com>
Reviewed-by: Jinshan Xiong <jinshan.xiong@intel.com>
Signed-off-by: Oleg Drokin <oleg.drokin@intel.com>
---
drivers/staging/lustre/lustre/llite/dir.c | 3 +++
1 file changed, 3 insertions(+)

diff --git a/drivers/staging/lustre/lustre/llite/dir.c b/drivers/staging/lustre/lustre/llite/dir.c
index d407fcc..cc6f0f5 100644
--- a/drivers/staging/lustre/lustre/llite/dir.c
+++ b/drivers/staging/lustre/lustre/llite/dir.c
@@ -1734,6 +1734,9 @@ out_quotactl:
}
case OBD_IOC_CHANGELOG_SEND:
case OBD_IOC_CHANGELOG_CLEAR:
+ if (!capable(CFS_CAP_SYS_ADMIN))
+ return -EPERM;
+
rc = copy_and_ioctl(cmd, sbi->ll_md_exp, (void *)arg,
sizeof(struct ioc_changelog));
return rc;
--
2.1.0


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