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target: Fix incorrect strlen() NULL terminator checks

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This patch fixes a number of cases in target core using an incorrectly

	if (strlen(foo) > SOME_MAX_SIZE)

As strlen() returns the number of characters in the string not counting
the NULL character at the end.  So if you do something like:

        char buf[10];

        if (strlen("0123456789") > 10)
                return -ETOOLONG;
        snprintf(buf, 10, "0123456789");
        printf("%s\n", buf);

then the last "9" gets chopped off and only "012345678" is printed.

Plus I threw in one small related cleanup.

Signed-off-by: Dan Carpenter <error27@gmail.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
This commit is contained in:
Dan Carpenter
2011-06-15 10:03:05 -07:00
committed by Nicholas Bellinger
parent 5eff5be0b1
commit 60d645a4e9
4 changed files with 17 additions and 17 deletions
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4
drivers/target/loopback/tcm_loop.c
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@@ -1143,7 +1143,7 @@ static ssize_t tcm_loop_tpg_store_nexus(
* the fabric protocol_id set in tcm_loop_make_scsi_hba(), and call
* tcm_loop_make_nexus()
*/
if (strlen(page) > TL_WWN_ADDR_LEN) {
if (strlen(page) >= TL_WWN_ADDR_LEN) {
printk(KERN_ERR "Emulated NAA Sas Address: %s, exceeds"
" max: %d\n", page, TL_WWN_ADDR_LEN);
return -EINVAL;
@@ -1324,7 +1324,7 @@ struct se_wwn *tcm_loop_make_scsi_hba(
return ERR_PTR(-EINVAL);
check_len:
if (strlen(name) > TL_WWN_ADDR_LEN) {
if (strlen(name) >= TL_WWN_ADDR_LEN) {
printk(KERN_ERR "Emulated NAA %s Address: %s, exceeds"
" max: %d\n", name, tcm_loop_dump_proto_id(tl_hba),
TL_WWN_ADDR_LEN);