From 902b62c7805b71bf97125be0977fac328c364a67 Mon Sep 17 00:00:00 2001 From: Robin Humble Date: Mon, 16 Apr 2018 00:14:55 -0400 Subject: [PATCH] staging: lustre: llite: Remove filtering of seclabel xattr The security.capability xattr is used to implement File Capabilities in recent Linux versions. Capabilities are a fine grained approach to granting executables elevated privileges. eg. /bin/ping can have capabilities cap_net_admin, cap_net_raw+ep instead of being setuid root. This xattr has long been filtered out by llite, initially for stability reasons (b15587), and later over performance concerns as this xattr is read for every file with eg. 'ls --color'. Since LU-2869 xattr's are cached on clients, alleviating most performance concerns. Removing llite's filtering of the security.capability xattr enables using Lustre as a root filesystem, which is used on some large clusters. Signed-off-by: Robin Humble Intel-bug-id: https://jira.hpdd.intel.com/browse/LU-9562 Reviewed-on: https://review.whamcloud.com/27292 Reviewed-by: John L. Hammond Reviewed-by: Sebastien Buisson Reviewed-by: Oleg Drokin Signed-off-by: James Simmons Signed-off-by: Greg Kroah-Hartman --- drivers/staging/lustre/lustre/llite/xattr.c | 9 --------- 1 file changed, 9 deletions(-) diff --git a/drivers/staging/lustre/lustre/llite/xattr.c b/drivers/staging/lustre/lustre/llite/xattr.c index 2d78432963dcd..55a19a567ad1c 100644 --- a/drivers/staging/lustre/lustre/llite/xattr.c +++ b/drivers/staging/lustre/lustre/llite/xattr.c @@ -117,11 +117,6 @@ ll_xattr_set_common(const struct xattr_handler *handler, (handler->flags == XATTR_LUSTRE_T && !strcmp(name, "lov")))) return 0; - /* b15587: ignore security.capability xattr for now */ - if ((handler->flags == XATTR_SECURITY_T && - !strcmp(name, "capability"))) - return 0; - /* LU-549: Disable security.selinux when selinux is disabled */ if (handler->flags == XATTR_SECURITY_T && !selinux_is_enabled() && strcmp(name, "selinux") == 0) @@ -383,10 +378,6 @@ static int ll_xattr_get_common(const struct xattr_handler *handler, if (rc) return rc; - /* b15587: ignore security.capability xattr for now */ - if ((handler->flags == XATTR_SECURITY_T && !strcmp(name, "capability"))) - return -ENODATA; - /* LU-549: Disable security.selinux when selinux is disabled */ if (handler->flags == XATTR_SECURITY_T && !selinux_is_enabled() && !strcmp(name, "selinux")) -- 2.30.2