diff options
| author | Sebastian Andrzej Siewior <bigeasy@linutronix.de> | 2012-01-18 14:04:29 +0100 |
|---|---|---|
| committer | Nicholas Bellinger <nab@linux-iscsi.org> | 2012-02-07 06:32:39 +0000 |
| commit | 95fe1ee41e23fa271416da67483594dde74bc6ca (patch) | |
| tree | 6bfed9186c9fbec3954f4c9f590802ade39ffbe7 | |
| parent | bf0053550aebe56f3bb5dd793e9de69238b5b945 (diff) | |
| download | linux-95fe1ee41e23fa271416da67483594dde74bc6ca.tar.bz2 | |
target: accept REQUEST_SENSE with 18bytes
WindowsXP+BOT issues a MODE_SENSE request with page 0x1c which is not
suppoerted by target. Target rejects that command with
TCM_INVALID_CDB_FIELD, so far so good. On BOT I can't send the SENSE
response back, instead I can only reply that an error occured. The next
thing happens is a REQUEST_SENSE request with 18 bytes length. Since the
check here is more than 18 bytes I have to NACK that request as well.
This is not really required: We check for some additional room, but we
never use it. The additional length is set to 0xa so the total length is
0xa + 8 = 18 which is fine with my 18 bytes.
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
| -rw-r--r-- | drivers/target/target_core_cdb.c | 14 |
1 files changed, 4 insertions, 10 deletions
diff --git a/drivers/target/target_core_cdb.c b/drivers/target/target_core_cdb.c index a9bbf5a5cc27..f3d71fa88a28 100644 --- a/drivers/target/target_core_cdb.c +++ b/drivers/target/target_core_cdb.c @@ -1058,11 +1058,8 @@ int target_emulate_request_sense(struct se_task *task) */ buf[0] = 0x70; buf[SPC_SENSE_KEY_OFFSET] = UNIT_ATTENTION; - /* - * Make sure request data length is enough for additional - * sense data. - */ - if (cmd->data_length <= 18) { + + if (cmd->data_length < 18) { buf[7] = 0x00; err = -EINVAL; goto end; @@ -1079,11 +1076,8 @@ int target_emulate_request_sense(struct se_task *task) */ buf[0] = 0x70; buf[SPC_SENSE_KEY_OFFSET] = NO_SENSE; - /* - * Make sure request data length is enough for additional - * sense data. - */ - if (cmd->data_length <= 18) { + + if (cmd->data_length < 18) { buf[7] = 0x00; err = -EINVAL; goto end; |