From mboxrd@z Thu Jan 1 00:00:00 1970 From: Roland Dreier Subject: [PATCH] target: Return an error for WRITE SAME with ANCHOR==1 Date: Mon, 14 Oct 2013 15:49:23 -0700 Message-ID: <1381790963-14657-1-git-send-email-roland@kernel.org> Return-path: Sender: target-devel-owner@vger.kernel.org To: "Nicholas A. Bellinger" Cc: target-devel@vger.kernel.org, linux-scsi@vger.kernel.org, Roland Dreier List-Id: linux-scsi@vger.kernel.org From: Roland Dreier Per SBC-3, since we report ANC_SUP==0 in VPD page B2h, we need to return an error (ILLEGAL REQUEST/INVALID FIELD IN CDB) for all WRITE SAME requests with ANCHOR==1. Signed-off-by: Roland Dreier --- drivers/target/target_core_sbc.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/drivers/target/target_core_sbc.c b/drivers/target/target_core_sbc.c index 4714c6f8da4b..d9b92b2c524d 100644 --- a/drivers/target/target_core_sbc.c +++ b/drivers/target/target_core_sbc.c @@ -263,6 +263,11 @@ sbc_setup_write_same(struct se_cmd *cmd, unsigned char *flags, struct sbc_ops *o sectors, cmd->se_dev->dev_attrib.max_write_same_len); return TCM_INVALID_CDB_FIELD; } + /* We always have ANC_SUP == 0 so setting ANCHOR is always an error */ + if (flags[0] & 0x10) { + pr_warn("WRITE SAME with ANCHOR not supported\n"); + return TCM_INVALID_CDB_FIELD; + } /* * Special case for WRITE_SAME w/ UNMAP=1 that ends up getting * translated into block discard requests within backend code. -- 1.8.3.2