From 25be7fe2be879a96920cc74809e1bff1b0ae0bac Mon Sep 17 00:00:00 2001 From: David Herrmann Date: Tue, 29 Jul 2014 17:14:18 +0200 Subject: HID: uhid: avoid magic-numbers when setting strings Avoid hard-coding the target buffer sizes and use sizeof() instead. This also makes us future-proof to buffer-extensions later on. Signed-off-by: David Herrmann Signed-off-by: Jiri Kosina --- drivers/hid/uhid.c | 14 +++++++------- 1 file changed, 7 insertions(+), 7 deletions(-) (limited to 'drivers') diff --git a/drivers/hid/uhid.c b/drivers/hid/uhid.c index bf13746d1731..5dee8bd60745 100644 --- a/drivers/hid/uhid.c +++ b/drivers/hid/uhid.c @@ -363,7 +363,7 @@ static int uhid_dev_create2(struct uhid_device *uhid, const struct uhid_event *ev) { struct hid_device *hid; - size_t rd_size; + size_t rd_size, len; void *rd_data; int ret; @@ -387,12 +387,12 @@ static int uhid_dev_create2(struct uhid_device *uhid, goto err_free; } - strncpy(hid->name, ev->u.create2.name, 127); - hid->name[127] = 0; - strncpy(hid->phys, ev->u.create2.phys, 63); - hid->phys[63] = 0; - strncpy(hid->uniq, ev->u.create2.uniq, 63); - hid->uniq[63] = 0; + len = min(sizeof(hid->name), sizeof(ev->u.create2.name)) - 1; + strncpy(hid->name, ev->u.create2.name, len); + len = min(sizeof(hid->phys), sizeof(ev->u.create2.phys)) - 1; + strncpy(hid->phys, ev->u.create2.phys, len); + len = min(sizeof(hid->uniq), sizeof(ev->u.create2.uniq)) - 1; + strncpy(hid->uniq, ev->u.create2.uniq, len); hid->ll_driver = &uhid_hid_driver; hid->bus = ev->u.create2.bus; -- cgit v1.2.3