diff options
Diffstat (limited to 'sysdeps/unix/sysv/linux')
| -rw-r--r-- | sysdeps/unix/sysv/linux/if_index.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/sysdeps/unix/sysv/linux/if_index.c b/sysdeps/unix/sysv/linux/if_index.c index 56f3f136cb..e7ca27bc18 100644 --- a/sysdeps/unix/sysv/linux/if_index.c +++ b/sysdeps/unix/sysv/linux/if_index.c @@ -43,6 +43,12 @@ __if_nametoindex (const char *ifname) if (fd < 0) return 0; + if (strlen (ifname) >= IFNAMSIZ) + { + __set_errno (ENODEV); + return 0; + } + strncpy (ifr.ifr_name, ifname, sizeof (ifr.ifr_name)); if (__ioctl (fd, SIOCGIFINDEX, &ifr) < 0) { |