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s390/tape: Use scnprintf() instead of sprintf()

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Use scnprintf() instead of sprintf() for those cases where the destination
is an array and the size of the array is known at compile time.

This prevents theoretical buffer overflows, but also avoids that people
again and again spend time to figure out if the code is actually safe.

Reviewed-by: Jan Höppner <hoeppner@linux.ibm.com>
Reviewed-by: Jan Polensky <japo@linux.ibm.com>
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
This commit is contained in:
Heiko Carstens 2025-10-07 11:05:04 +02:00
parent ffb5d3af5e
commit c769941de8
1 changed files with 1 additions and 1 deletions
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2
drivers/s390/char/tape_char.c
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@ -64,7 +64,7 @@ tapechar_setup_device(struct tape_device * device)
{
char device_name[20];
sprintf(device_name, "ntibm%i", device->first_minor / 2);
scnprintf(device_name, sizeof(device_name), "ntibm%i", device->first_minor / 2);
device->nt = register_tape_dev(
&device->cdev->dev,
MKDEV(tapechar_major, device->first_minor),