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dm: use strncpy to replace strcpy

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Use strncpy instead of strcpy to avoid buf overflow.
Fix strncpy null-terminated issues.

Tracked-On: #3245
Signed-off-by: Tianhua Sun <tianhuax.s.sun@intel.com>
Acked-by: Anthony Xu <anthony.xu@intel.com>
This commit is contained in:
Tianhua Sun
2019-06-11 10:22:27 +08:00
committed by wenlingz
parent 0ea788b48e
commit 1e1244c36b
5 changed files with 10 additions and 3 deletions
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4
devicemodel/hw/pci/virtio/virtio_net.c
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@@ -652,8 +652,10 @@ virtio_net_tap_open(char *devname)
memset(&ifr, 0, sizeof(ifr));
ifr.ifr_flags = IFF_TAP | IFF_NO_PI;
if (*devname)
if (*devname) {
strncpy(ifr.ifr_name, devname, IFNAMSIZ);
ifr.ifr_name[IFNAMSIZ - 1] = '\0';
}
rc = ioctl(tunfd, TUNSETIFF, (void *)&ifr);
if (rc < 0) {