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| author | David Herrmann <dh.herrmann@gmail.com> | 2014-07-29 17:14:18 +0200 |
|---|---|---|
| committer | Jiri Kosina <jkosina@suse.cz> | 2014-08-25 10:28:06 +0200 |
| commit | 25be7fe2be879a96920cc74809e1bff1b0ae0bac (patch) | |
| tree | 5aceb475e238677842f5b22fde8ce957b9932c67 | |
| parent | HID: uhid: avoid dangling pointers in uhid context (diff) | |
| download | linux-25be7fe2be879a96920cc74809e1bff1b0ae0bac.tar.xz linux-25be7fe2be879a96920cc74809e1bff1b0ae0bac.zip | |
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 <dh.herrmann@gmail.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
| -rw-r--r-- | drivers/hid/uhid.c | 14 |
1 files changed, 7 insertions, 7 deletions
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; |