From 65917718fb8bc2c94df3d52c054116c0e2e640cc Mon Sep 17 00:00:00 2001 From: Justin Stitt Date: Wed, 20 Sep 2023 11:07:35 +0000 Subject: i2c: powermac: replace deprecated strncpy `strncpy` is deprecated for use on NUL-terminated destination strings [1]. We should prefer more robust and less ambiguous string interfaces. `info.type` is expected to be NUL-terminated judging by its use in `i2c_new_client_device()` wherein it is used to populate `client->name`: | strscpy(client->name, info->type, sizeof(client->name)); NUL-padding is not required and even if it was, `client` is already zero-initialized. Considering the two points from above, a suitable replacement is `strscpy` [2] due to the fact that it guarantees NUL-termination on the destination buffer without unnecessarily NUL-padding. 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 Signed-off-by: Justin Stitt Reviewed-by: Kees Cook Signed-off-by: Wolfram Sang --- drivers/i2c/busses/i2c-powermac.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers/i2c') diff --git a/drivers/i2c/busses/i2c-powermac.c b/drivers/i2c/busses/i2c-powermac.c index 4996a628fdae..8e57ebe595be 100644 --- a/drivers/i2c/busses/i2c-powermac.c +++ b/drivers/i2c/busses/i2c-powermac.c @@ -231,7 +231,7 @@ static void i2c_powermac_create_one(struct i2c_adapter *adap, struct i2c_board_info info = {}; struct i2c_client *newdev; - strncpy(info.type, type, sizeof(info.type)); + strscpy(info.type, type, sizeof(info.type)); info.addr = addr; newdev = i2c_new_client_device(adap, &info); if (IS_ERR(newdev)) -- cgit v1.2.3