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authorNicholas Bellinger <nab@linux-iscsi.org>2013-07-24 16:15:08 -0700
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2013-09-07 21:49:32 -0700
commite9d581e05541c10c4eed1ea5718e084a80e10b8a (patch)
treebd3148a420ea025825124a2f769983f44f33f4ce
parent833c9b848d8fab75497a7bb9741d58faeb2810cf (diff)
target: Fix trailing ASCII space usage in INQUIRY vendor+model
commit ee60bddba5a5f23e39598195d944aa0eb2d455e5 upstream. This patch fixes spc_emulate_inquiry_std() to add trailing ASCII spaces for INQUIRY vendor + model fields following SPC-4 text: "ASCII data fields described as being left-aligned shall have any unused bytes at the end of the field (i.e., highest offset) and the unused bytes shall be filled with ASCII space characters (20h)." This addresses a problem with Falconstor NSS multipathing. Reported-by: Tomas Molota <tomas.molota@lightstorm.sk> Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
-rw-r--r--drivers/target/target_core_cdb.c11
1 files changed, 6 insertions, 5 deletions
diff --git a/drivers/target/target_core_cdb.c b/drivers/target/target_core_cdb.c
index 05584010e70e..f8c49ab4e6b5 100644
--- a/drivers/target/target_core_cdb.c
+++ b/drivers/target/target_core_cdb.c
@@ -117,11 +117,12 @@ target_emulate_inquiry_std(struct se_cmd *cmd)
return 0;
}
- snprintf((unsigned char *)&buf[8], 8, "LIO-ORG");
- snprintf((unsigned char *)&buf[16], 16, "%s",
- &DEV_T10_WWN(dev)->model[0]);
- snprintf((unsigned char *)&buf[32], 4, "%s",
- &DEV_T10_WWN(dev)->revision[0]);
+ memcpy(&buf[8], "LIO-ORG ", 8);
+ memset(&buf[16], 0x20, 16);
+ memcpy(&buf[16], dev->se_sub_dev->t10_wwn.model,
+ min_t(size_t, strlen(dev->se_sub_dev->t10_wwn.model), 16));
+ memcpy(&buf[32], dev->se_sub_dev->t10_wwn.revision,
+ min_t(size_t, strlen(dev->se_sub_dev->t10_wwn.revision), 4));
buf[4] = 31; /* Set additional length to 31 */
return 0;
}