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| author | Justin Stitt <justinstitt@google.com> | 2023-09-20 11:07:35 +0000 |
|---|---|---|
| committer | Wolfram Sang <wsa@kernel.org> | 2023-09-22 12:12:07 +0200 |
| commit | 65917718fb8bc2c94df3d52c054116c0e2e640cc (patch) | |
| tree | 17fb41feedb12665942a64763ca342f4bf3010d1 /drivers/i2c | |
| parent | e2def33f9ee1b1a8cda4ec5cde69840b5708f068 (diff) | |
| download | linux-65917718fb8bc2c94df3d52c054116c0e2e640cc.tar.gz | |
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 <justinstitt@google.com>
Reviewed-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Wolfram Sang <wsa@kernel.org>
Diffstat (limited to 'drivers/i2c')
| -rw-r--r-- | drivers/i2c/busses/i2c-powermac.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/i2c/busses/i2c-powermac.c b/drivers/i2c/busses/i2c-powermac.c index 4996a628fdae1..8e57ebe595be5 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)) |