Greetings all, This patch adds struct configfs_item_operations->check_link() for lio_target_port_item_ops that allows existing LIO-Target Port Logical Unit ACL to prevent an unlink(2) from a exported target_core_mod/ConfigFS Linux storage object at: /sys/kernel/config/target/iscsi/$TARGET_IQN/$TPGT/lun/$LUN/$PORT when iSCSI Initiator LUN ACLs exist to LIO-Target/ConfigFS storage objects in: /sys/kernel/config/target/iscsi/$IQN/$TPGT/acl/$INITIATOR_IQN/$LUN These patches are made against lio-core-2.6.git/master and tested on v2.6.29 x86 32-bit HVM. The lio-core-2.6.git tree can be found at: http://git.kernel.org/?p=linux/kernel/git/nab/lio-core-2.6.git;a=summary Signed-off-by: Nicholas A. Bellinger <nab@xxxxxxxxxxxxxxx> --- drivers/lio-core/iscsi_target_configfs.c | 8 ++++++++ 1 files changed, 8 insertions(+), 0 deletions(-) diff --git a/drivers/lio-core/iscsi_target_configfs.c b/drivers/lio-core/iscsi_target_configfs.c index dc6ef88..acaa436 100644 --- a/drivers/lio-core/iscsi_target_configfs.c +++ b/drivers/lio-core/iscsi_target_configfs.c @@ -523,6 +523,13 @@ out: return(ret); } +static int lio_target_port_check_link(struct config_item *lun_ci) +{ + se_lun_t *lun = container_of(to_config_group(lun_ci), se_lun_t, lun_group); + + return atomic_read(&lun->lun_acl_count) ? -EACCES : 0; +} + static int lio_target_port_unlink (struct config_item *lun_ci, struct config_item *se_dev_ci) { iscsi_portal_group_t *tpg; @@ -568,6 +575,7 @@ static struct configfs_item_operations lio_target_port_item_ops = { .show_attribute = lio_target_port_show, .store_attribute = lio_target_port_store, .allow_link = lio_target_port_link, + .check_link = lio_target_port_check_link, .drop_link = lio_target_port_unlink, }; -- 1.5.4.1 -- To unsubscribe from this list: send the line "unsubscribe linux-fsdevel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
