diff options
Diffstat (limited to 'sys/net/if.c')
| -rw-r--r-- | sys/net/if.c | 7 |
1 files changed, 3 insertions, 4 deletions
diff --git a/sys/net/if.c b/sys/net/if.c index e4a2005..98c8afa 100644 --- a/sys/net/if.c +++ b/sys/net/if.c @@ -2049,14 +2049,13 @@ ifhwioctl(u_long cmd, struct ifnet *ifp, caddr_t data, struct thread *td) case SIOCGIFDESCR: error = 0; sx_slock(&ifdescr_sx); - if (ifp->if_description == NULL) { - ifr->ifr_buffer.length = 0; + if (ifp->if_description == NULL) error = ENOMSG; - } else { + else { /* space for terminating nul */ descrlen = strlen(ifp->if_description) + 1; if (ifr->ifr_buffer.length < descrlen) - error = ENAMETOOLONG; + ifr->ifr_buffer.buffer = NULL; else error = copyout(ifp->if_description, ifr->ifr_buffer.buffer, descrlen); |
