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authorDan Carpenter <error27@gmail.com>2011-06-15 10:03:05 -0700
committerNicholas Bellinger <nab@linux-iscsi.org>2011-06-24 00:08:11 +0000
commit60d645a4e9e7e7ddc20e534fea82aa4e6947f911 (patch)
tree656848db8b14b92993df040058df24ce7012cb8b /drivers/target/loopback
parent5eff5be0b1993f4291f2b8c6d035b408010f96c5 (diff)
downloadvexpress-lsk-60d645a4e9e7e7ddc20e534fea82aa4e6947f911.tar.gz
target: Fix incorrect strlen() NULL terminator checks
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>
Diffstat (limited to 'drivers/target/loopback')
-rw-r--r--drivers/target/loopback/tcm_loop.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/target/loopback/tcm_loop.c b/drivers/target/loopback/tcm_loop.c
index d4fee2a9d66..70c2e7fa666 100644
--- a/drivers/target/loopback/tcm_loop.c
+++ b/drivers/target/loopback/tcm_loop.c
@@ -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);