scsi: qla4xxx: ql4_mbx.c: Cleaning up missing null-terminate in conjunction with...

Replacing strncpy with strlcpy to avoid strings that lacks null terminate.
And in some cases modified to copy one character less than the overall
length, as the entire area is already zeroed.

Signed-off-by: Rickard Strandqvist <rickard_strandqvist@spectrumdigital.se>
Acked-By: Nilesh Javali <nilesh.javali@qlogic.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>

diff --git a/drivers/scsi/qla4xxx/ql4_mbx.c b/drivers/scsi/qla4xxx/ql4_mbx.c
index fdfae79924ac1df54e6c3b7e66e7afc53fff0736..c291fdff1b338a2ff0ec50930f82298dab279e07 100644 (file)
--- a/drivers/scsi/qla4xxx/ql4_mbx.c
+++ b/drivers/scsi/qla4xxx/ql4_mbx.c
@@ -1620,8 +1620,8 @@ int qla4xxx_get_chap(struct scsi_qla_host *ha, char *username, char *password,
                goto exit_get_chap;
        }
 
-       strncpy(password, chap_table->secret, QL4_CHAP_MAX_SECRET_LEN);
-       strncpy(username, chap_table->name, QL4_CHAP_MAX_NAME_LEN);
+       strlcpy(password, chap_table->secret, QL4_CHAP_MAX_SECRET_LEN);
+       strlcpy(username, chap_table->name, QL4_CHAP_MAX_NAME_LEN);
        chap_table->cookie = __constant_cpu_to_le16(CHAP_VALID_COOKIE);
 
 exit_get_chap:
@@ -1663,8 +1663,8 @@ int qla4xxx_set_chap(struct scsi_qla_host *ha, char *username, char *password,
        else
                chap_table->flags |= BIT_7; /* local */
        chap_table->secret_len = strlen(password);
-       strncpy(chap_table->secret, password, MAX_CHAP_SECRET_LEN);
-       strncpy(chap_table->name, username, MAX_CHAP_NAME_LEN);
+       strncpy(chap_table->secret, password, MAX_CHAP_SECRET_LEN - 1);
+       strncpy(chap_table->name, username, MAX_CHAP_NAME_LEN - 1);
        chap_table->cookie = __constant_cpu_to_le16(CHAP_VALID_COOKIE);
 
        if (is_qla40XX(ha)) {
@@ -1742,8 +1742,8 @@ int qla4xxx_get_uni_chap_at_index(struct scsi_qla_host *ha, char *username,
                goto exit_unlock_uni_chap;
        }
 
-       strncpy(password, chap_table->secret, MAX_CHAP_SECRET_LEN);
-       strncpy(username, chap_table->name, MAX_CHAP_NAME_LEN);
+       strlcpy(password, chap_table->secret, MAX_CHAP_SECRET_LEN);
+       strlcpy(username, chap_table->name, MAX_CHAP_NAME_LEN);
 
        rval = QLA_SUCCESS;
 
@@ -2295,7 +2295,7 @@ int qla4_8xxx_set_param(struct scsi_qla_host *ha, int param)
        if (param == SET_DRVR_VERSION) {
                mbox_cmd[1] = SET_DRVR_VERSION;
                strncpy((char *)&mbox_cmd[2], QLA4XXX_DRIVER_VERSION,
-                       MAX_DRVR_VER_LEN);
+                       MAX_DRVR_VER_LEN - 1);
        } else {
                ql4_printk(KERN_ERR, ha, "%s: invalid parameter 0x%x\n",
                           __func__, param);