summaryrefslogtreecommitdiff
path: root/drivers/target/target_core_stat.c
diff options
context:
space:
mode:
authorDavid Disseldorp <ddiss@suse.de>2018-12-05 15:18:35 +0300
committerMartin K. Petersen <martin.petersen@oracle.com>2018-12-08 05:54:33 +0300
commitb2da4abf26e859c6c17b49f6f728db0eaab9bc4a (patch)
treed0050f258c6d6b707be82218373d9d96f0d609d6 /drivers/target/target_core_stat.c
parent0de263577de5d5e052be5f4f93334e63cc8a7f0b (diff)
downloadlinux-b2da4abf26e859c6c17b49f6f728db0eaab9bc4a.tar.xz
scsi: target: consistently null-terminate t10_wwn strings
In preparation for supporting user provided vendor strings, add an extra byte to the vendor, model and revision arrays in struct t10_wwn. This ensures that the full INQUIRY data can be carried in the arrays along with a null-terminator. Change a number of array readers and writers so that they account for explicit null-termination: - The pscsi_set_inquiry_info() and emulate_model_alias_store() codepaths don't currently explicitly null-terminate; fix this. - Existing t10_wwn field dumps use for-loops which step over null-terminators for right-padding. + Use printf with width specifiers instead. Signed-off-by: David Disseldorp <ddiss@suse.de> Reviewed-by: Roman Bolshakov <r.bolshakov@yadro.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Diffstat (limited to 'drivers/target/target_core_stat.c')
-rw-r--r--drivers/target/target_core_stat.c32
1 files changed, 7 insertions, 25 deletions
diff --git a/drivers/target/target_core_stat.c b/drivers/target/target_core_stat.c
index b80b3e990821..8d9ceedfd455 100644
--- a/drivers/target/target_core_stat.c
+++ b/drivers/target/target_core_stat.c
@@ -246,43 +246,25 @@ static ssize_t target_stat_lu_lu_name_show(struct config_item *item, char *page)
static ssize_t target_stat_lu_vend_show(struct config_item *item, char *page)
{
struct se_device *dev = to_stat_lu_dev(item);
- int i;
- char str[sizeof(dev->t10_wwn.vendor)+1];
- /* scsiLuVendorId */
- for (i = 0; i < sizeof(dev->t10_wwn.vendor); i++)
- str[i] = ISPRINT(dev->t10_wwn.vendor[i]) ?
- dev->t10_wwn.vendor[i] : ' ';
- str[i] = '\0';
- return snprintf(page, PAGE_SIZE, "%s\n", str);
+ return snprintf(page, PAGE_SIZE, "%-" __stringify(INQUIRY_VENDOR_LEN)
+ "s\n", dev->t10_wwn.vendor);
}
static ssize_t target_stat_lu_prod_show(struct config_item *item, char *page)
{
struct se_device *dev = to_stat_lu_dev(item);
- int i;
- char str[sizeof(dev->t10_wwn.model)+1];
- /* scsiLuProductId */
- for (i = 0; i < sizeof(dev->t10_wwn.model); i++)
- str[i] = ISPRINT(dev->t10_wwn.model[i]) ?
- dev->t10_wwn.model[i] : ' ';
- str[i] = '\0';
- return snprintf(page, PAGE_SIZE, "%s\n", str);
+ return snprintf(page, PAGE_SIZE, "%-" __stringify(INQUIRY_MODEL_LEN)
+ "s\n", dev->t10_wwn.model);
}
static ssize_t target_stat_lu_rev_show(struct config_item *item, char *page)
{
struct se_device *dev = to_stat_lu_dev(item);
- int i;
- char str[sizeof(dev->t10_wwn.revision)+1];
-
- /* scsiLuRevisionId */
- for (i = 0; i < sizeof(dev->t10_wwn.revision); i++)
- str[i] = ISPRINT(dev->t10_wwn.revision[i]) ?
- dev->t10_wwn.revision[i] : ' ';
- str[i] = '\0';
- return snprintf(page, PAGE_SIZE, "%s\n", str);
+
+ return snprintf(page, PAGE_SIZE, "%-" __stringify(INQUIRY_REVISION_LEN)
+ "s\n", dev->t10_wwn.revision);
}
static ssize_t target_stat_lu_dev_type_show(struct config_item *item, char *page)