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| author | Jason A. Donenfeld <Jason@zx2c4.com> | 2017-05-30 23:04:36 +0200 |
|---|---|---|
| committer | Jason A. Donenfeld <Jason@zx2c4.com> | 2017-05-31 05:35:34 +0200 |
| commit | 03fffb2eff8174ceb94e5faef4c86a0de8a9027e (patch) | |
| tree | 449200fef058b201423e9977377f2f7b476f97e3 /src/config.c | |
| parent | d5d5dcfa4bfc343e9d74d9c5c00ba79d8c57991d (diff) | |
config: it's faster to memcpy than strncpy
IFNAMSIZ is 16, so this is two instructions on 64-bit.
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
Diffstat (limited to 'src/config.c')
| -rw-r--r-- | src/config.c | 3 |
1 files changed, 1 insertions, 2 deletions
diff --git a/src/config.c b/src/config.c index f3357b5..907c6b3 100644 --- a/src/config.c +++ b/src/config.c @@ -317,8 +317,7 @@ int config_get_device(struct wireguard_device *wg, void __user *user_device) out_device.version_magic = WG_API_VERSION_MAGIC; out_device.port = wg->incoming_port; out_device.fwmark = wg->fwmark; - strncpy(out_device.interface, dev->name, IFNAMSIZ - 1); - out_device.interface[IFNAMSIZ - 1] = 0; + memcpy(out_device.interface, dev->name, IFNAMSIZ); down_read(&wg->static_identity.lock); if (wg->static_identity.has_identity) { |