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staging: lustre: hsm: permission checks for HSM ioctl operations

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In the LL_IOC_HSM_CT_START case of ll_dir_ioctl() require
CAP_SYS_ADMIN, since the local handler for this ioctl may modify the
global KUC table.

Signed-off-by: John L. Hammond <john.hammond@intel.com>
Intel-bug-id: https://jira.hpdd.intel.com/browse/LU-3866
Reviewed-on: http://review.whamcloud.com/7565
Reviewed-by: Aurelien Degremont <aurelien.degremont@cea.fr>
Reviewed-by: Faccini Bruno <bruno.faccini@intel.com>
Reviewed-by: Jinshan Xiong <jinshan.xiong@intel.com>
Reviewed-by: Oleg Drokin <oleg.drokin@intel.com>
Signed-off-by: James Simmons <jsimmons@infradead.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
John L. Hammond 2016-04-12 16:14:15 -04:00 committed by Greg Kroah-Hartman
parent 554f0724af
commit 1cc28b7779
1 changed files with 3 additions and 0 deletions
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3
drivers/staging/lustre/lustre/llite/dir.c
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@ -1843,6 +1843,9 @@ out_quotactl:
return rc;
}
case LL_IOC_HSM_CT_START:
if (!capable(CFS_CAP_SYS_ADMIN))
return -EPERM;
rc = copy_and_ioctl(cmd, sbi->ll_md_exp, (void __user *)arg,
sizeof(struct lustre_kernelcomm));
return rc;