| Message ID | 20240914231756.503521-1-abdul.rahim@myyahoo.com (mailing list archive) |
|---|---|
| State | New |
| Headers | show |
| Series | usb: gadget: f_midi: prefer strscpy() over strcpy() | expand |
On Sun, Sep 15, 2024 at 04:47:49AM +0530, Abdul Rahim wrote: > The function strcpy() is depreciated and potentially unsafe. It performs > no bounds checking on the destination buffer. This could result in > linear overflows beyond the end of the buffer, leading to all kinds of > misbehaviors. The safe replacement is strscpy() [1]. > > this fixes checkpatch warning: > WARNING: Prefer strscpy over strcpy > > Link: https://www.kernel.org/doc/html/latest/process/deprecated.html#strcpy [1] > Signed-off-by: Abdul Rahim <abdul.rahim@myyahoo.com> Yup, these look good. Thanks! Reviewed-by: Kees Cook <kees@kernel.org>
diff --git a/drivers/usb/gadget/function/f_midi.c b/drivers/usb/gadget/function/f_midi.c index 1067847cc079..837fcdfa3840 100644 --- a/drivers/usb/gadget/function/f_midi.c +++ b/drivers/usb/gadget/function/f_midi.c @@ -819,9 +819,9 @@ static int f_midi_register_card(struct f_midi *midi) goto fail; } - strcpy(card->driver, f_midi_longname); - strcpy(card->longname, f_midi_longname); - strcpy(card->shortname, f_midi_shortname); + strscpy(card->driver, f_midi_longname); + strscpy(card->longname, f_midi_longname); + strscpy(card->shortname, f_midi_shortname); /* Set up rawmidi */ snd_component_add(card, "MIDI"); @@ -833,7 +833,7 @@ static int f_midi_register_card(struct f_midi *midi) } midi->rmidi = rmidi; midi->in_last_port = 0; - strcpy(rmidi->name, card->shortname); + strscpy(rmidi->name, card->shortname); rmidi->info_flags = SNDRV_RAWMIDI_INFO_OUTPUT | SNDRV_RAWMIDI_INFO_INPUT | SNDRV_RAWMIDI_INFO_DUPLEX;
The function strcpy() is depreciated and potentially unsafe. It performs no bounds checking on the destination buffer. This could result in linear overflows beyond the end of the buffer, leading to all kinds of misbehaviors. The safe replacement is strscpy() [1]. this fixes checkpatch warning: WARNING: Prefer strscpy over strcpy Link: https://www.kernel.org/doc/html/latest/process/deprecated.html#strcpy [1] Signed-off-by: Abdul Rahim <abdul.rahim@myyahoo.com> --- drivers/usb/gadget/function/f_midi.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-)