[PATCH 1/7] scsi: mpi3mr: replace deprecated strncpy with strscpy

[Justin Stitt]

Really, there's no bug with the current code. Let's just ditch strncpy()
all together.

Since strscpy() will not NUL-pad the destination buffer let's
NUL-initialize @personality; just like the others.

Link: https://www.kernel.org/doc/html/latest/process/deprecated.html#strncpy-on-nul-terminated-strings [1]
Link: https://manpages.debian.org/testing/linux-manual-4.8/strscpy.9.en.html [2]
Link: https://github.com/KSPP/linux/issues/90
Cc: linux-hardening@xxxxxxxxxxxxxxx
Signed-off-by: Justin Stitt <justinstitt@xxxxxxxxxx>
---
 drivers/scsi/mpi3mr/mpi3mr_fw.c | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/drivers/scsi/mpi3mr/mpi3mr_fw.c b/drivers/scsi/mpi3mr/mpi3mr_fw.c
index 528f19f782f2..c3e55eedfa5e 100644
--- a/drivers/scsi/mpi3mr/mpi3mr_fw.c
+++ b/drivers/scsi/mpi3mr/mpi3mr_fw.c
@@ -3685,20 +3685,20 @@ static void
 mpi3mr_print_ioc_info(struct mpi3mr_ioc *mrioc)
 {
 	int i = 0, bytes_written = 0;
-	char personality[16];
+	char personality[16] = {0};
 	char protocol[50] = {0};
 	char capabilities[100] = {0};
 	struct mpi3mr_compimg_ver *fwver = &mrioc->facts.fw_ver;
 
 	switch (mrioc->facts.personality) {
 	case MPI3_IOCFACTS_FLAGS_PERSONALITY_EHBA:
-		strncpy(personality, "Enhanced HBA", sizeof(personality));
+		strscpy(personality, "Enhanced HBA", sizeof(personality));
 		break;
 	case MPI3_IOCFACTS_FLAGS_PERSONALITY_RAID_DDR:
-		strncpy(personality, "RAID", sizeof(personality));
+		strscpy(personality, "RAID", sizeof(personality));
 		break;
 	default:
-		strncpy(personality, "Unknown", sizeof(personality));
+		strscpy(personality, "Unknown", sizeof(personality));
 		break;
 	}
 

-- 
2.44.0.rc0.258.g7320e95886-goog