[PATCH 1/2] scsi: Replace strlcpy with strscpy

From: Azeem Shaikh
Date: Tue Jun 20 2023 - 23:01:32 EST


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@xxxxxxxxx>
---
drivers/scsi/ncr53c8xx.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/scsi/ncr53c8xx.c b/drivers/scsi/ncr53c8xx.c
index 4458449c960b..35869b4f9329 100644
--- a/drivers/scsi/ncr53c8xx.c
+++ b/drivers/scsi/ncr53c8xx.c
@@ -4555,7 +4555,7 @@ static void ncr_detach(struct ncb *np)
char inst_name[16];

/* Local copy so we don't access np after freeing it! */
- strlcpy(inst_name, ncr_name(np), sizeof(inst_name));
+ strscpy(inst_name, ncr_name(np), sizeof(inst_name));

printk("%s: releasing host resources\n", ncr_name(np));

--
2.41.0.162.gfafddb0af9-goog