diff mbox series

scsi: message: fusion: Replace all non-returning strlcpy with strscpy

Message ID 20230530160248.411637-1-azeemshaikh38@gmail.com
State New
Headers show
Series scsi: message: fusion: Replace all non-returning strlcpy with strscpy | expand

Commit Message

Azeem Shaikh May 30, 2023, 4:02 p.m. UTC 
strlcpy() reads the entire source buffer first.
This read may exceed the destination size limit.
This is both inefficient and can lead to linear read
overflows if a source string is not NUL-terminated [1].
In an effort to remove strlcpy() completely [2], replace
strlcpy() here with strscpy().
No return values were used, so direct replacement is safe.

[1] https://www.kernel.org/doc/html/latest/process/deprecated.html#strlcpy
[2] https://github.com/KSPP/linux/issues/89

Signed-off-by: Azeem Shaikh <azeemshaikh38@gmail.com>
---
 drivers/message/fusion/mptbase.c |    4 ++--
 drivers/message/fusion/mptctl.c  |    2 +-
 2 files changed, 3 insertions(+), 3 deletions(-)
diff mbox series

Patch

diff --git a/drivers/message/fusion/mptbase.c b/drivers/message/fusion/mptbase.c
index 4f0afce8428d..4bf669c55649 100644
--- a/drivers/message/fusion/mptbase.c
+++ b/drivers/message/fusion/mptbase.c
@@ -712,7 +712,7 @@  mpt_register(MPT_CALLBACK cbfunc, MPT_DRIVER_CLASS dclass, char *func_name)
 			MptDriverClass[cb_idx] = dclass;
 			MptEvHandlers[cb_idx] = NULL;
 			last_drv_idx = cb_idx;
-			strlcpy(MptCallbacksName[cb_idx], func_name,
+			strscpy(MptCallbacksName[cb_idx], func_name,
 				MPT_MAX_CALLBACKNAME_LEN+1);
 			break;
 		}
@@ -7666,7 +7666,7 @@  mpt_display_event_info(MPT_ADAPTER *ioc, EventNotificationReply_t *pEventReply)
 		break;
 	}
 	if (ds)
-		strlcpy(evStr, ds, EVENT_DESCR_STR_SZ);
+		strscpy(evStr, ds, EVENT_DESCR_STR_SZ);
 
 
 	devtprintk(ioc, printk(MYIOC_s_DEBUG_FMT
diff --git a/drivers/message/fusion/mptctl.c b/drivers/message/fusion/mptctl.c
index 1decd09a08d8..dd028df4b283 100644
--- a/drivers/message/fusion/mptctl.c
+++ b/drivers/message/fusion/mptctl.c
@@ -2408,7 +2408,7 @@  mptctl_hp_hostinfo(MPT_ADAPTER *ioc, unsigned long arg, unsigned int data_size)
 				if (mpt_config(ioc, &cfg) == 0) {
 					ManufacturingPage0_t *pdata = (ManufacturingPage0_t *) pbuf;
 					if (strlen(pdata->BoardTracerNumber) > 1) {
-						strlcpy(karg.serial_number,
+						strscpy(karg.serial_number,
 							pdata->BoardTracerNumber, 24);
 					}
 				}