diff options
| -rw-r--r-- | sys/fs/nullfs/null_vnops.c | 10 | ||||
| -rw-r--r-- | sys/kern/uipc_syscalls.c | 9 | ||||
| -rw-r--r-- | sys/net/if.c | 18 | ||||
| -rw-r--r-- | sys/netinet6/in6.c | 12 | ||||
| -rw-r--r-- | sys/netnatm/natm.c | 15 |
5 files changed, 57 insertions, 7 deletions
diff --git a/sys/fs/nullfs/null_vnops.c b/sys/fs/nullfs/null_vnops.c index 70402e3..cf3762e 100644 --- a/sys/fs/nullfs/null_vnops.c +++ b/sys/fs/nullfs/null_vnops.c @@ -858,6 +858,15 @@ null_vptocnp(struct vop_vptocnp_args *ap) return (error); } +static int +null_link(struct vop_link_args *ap) +{ + + if (ap->a_tdvp->v_mount != ap->a_vp->v_mount) + return (EXDEV); + return (null_bypass((struct vop_generic_args *)ap)); +} + /* * Global vfs data structures */ @@ -871,6 +880,7 @@ struct vop_vector null_vnodeops = { .vop_getwritemount = null_getwritemount, .vop_inactive = null_inactive, .vop_islocked = vop_stdislocked, + .vop_link = null_link, .vop_lock1 = null_lock, .vop_lookup = null_lookup, .vop_open = null_open, diff --git a/sys/kern/uipc_syscalls.c b/sys/kern/uipc_syscalls.c index 8229390..f88677c 100644 --- a/sys/kern/uipc_syscalls.c +++ b/sys/kern/uipc_syscalls.c @@ -2221,11 +2221,10 @@ retry_space: * or the passed in nbytes. */ pgoff = (vm_offset_t)(off & PAGE_MASK); - if (nbytes) - rem = (nbytes - fsbytes - loopbytes); - else - rem = va.va_size - - offset - fsbytes - loopbytes; + rem = va.va_size - offset; + if (nbytes != 0) + rem = omin(rem, nbytes); + rem -= fsbytes + loopbytes; xfsize = omin(PAGE_SIZE - pgoff, rem); xfsize = omin(space - loopbytes, xfsize); if (xfsize <= 0) { diff --git a/sys/net/if.c b/sys/net/if.c index 2cb3da0..0356ec7 100644 --- a/sys/net/if.c +++ b/sys/net/if.c @@ -2553,11 +2553,23 @@ ifioctl(struct socket *so, u_long cmd, caddr_t data, struct thread *td) CURVNET_RESTORE(); return (EOPNOTSUPP); } + + /* + * Pass the request on to the socket control method, and if the + * latter returns EOPNOTSUPP, directly to the interface. + * + * Make an exception for the legacy SIOCSIF* requests. Drivers + * trust SIOCSIFADDR et al to come from an already privileged + * layer, and do not perform any credentials checks or input + * validation. + */ #ifndef COMPAT_43 error = ((*so->so_proto->pr_usrreqs->pru_control)(so, cmd, data, ifp, td)); - if (error == EOPNOTSUPP && ifp != NULL && ifp->if_ioctl != NULL) + if (error == EOPNOTSUPP && ifp != NULL && ifp->if_ioctl != NULL && + cmd != SIOCSIFADDR && cmd != SIOCSIFBRDADDR && + cmd != SIOCSIFDSTADDR && cmd != SIOCSIFNETMASK) error = (*ifp->if_ioctl)(ifp, cmd, data); #else { @@ -2601,7 +2613,9 @@ ifioctl(struct socket *so, u_long cmd, caddr_t data, struct thread *td) data, ifp, td)); if (error == EOPNOTSUPP && ifp != NULL && - ifp->if_ioctl != NULL) + ifp->if_ioctl != NULL && + cmd != SIOCSIFADDR && cmd != SIOCSIFBRDADDR && + cmd != SIOCSIFDSTADDR && cmd != SIOCSIFNETMASK) error = (*ifp->if_ioctl)(ifp, cmd, data); switch (ocmd) { diff --git a/sys/netinet6/in6.c b/sys/netinet6/in6.c index 9d99930..e5c62df 100644 --- a/sys/netinet6/in6.c +++ b/sys/netinet6/in6.c @@ -431,6 +431,18 @@ in6_control(struct socket *so, u_long cmd, caddr_t data, case SIOCGIFSTAT_ICMP6: sa6 = &ifr->ifr_addr; break; + case SIOCSIFADDR: + case SIOCSIFBRDADDR: + case SIOCSIFDSTADDR: + case SIOCSIFNETMASK: + /* + * Although we should pass any non-INET6 ioctl requests + * down to driver, we filter some legacy INET requests. + * Drivers trust SIOCSIFADDR et al to come from an already + * privileged layer, and do not perform any credentials + * checks or input validation. + */ + return (EINVAL); default: sa6 = NULL; break; diff --git a/sys/netnatm/natm.c b/sys/netnatm/natm.c index 681da9c..c611650 100644 --- a/sys/netnatm/natm.c +++ b/sys/netnatm/natm.c @@ -339,6 +339,21 @@ natm_usr_control(struct socket *so, u_long cmd, caddr_t arg, npcb = (struct natmpcb *)so->so_pcb; KASSERT(npcb != NULL, ("natm_usr_control: npcb == NULL")); + switch (cmd) { + case SIOCSIFADDR: + case SIOCSIFBRDADDR: + case SIOCSIFDSTADDR: + case SIOCSIFNETMASK: + /* + * Although we should pass any non-ATM ioctl requests + * down to driver, we filter some legacy INET requests. + * Drivers trust SIOCSIFADDR et al to come from an already + * privileged layer, and do not perform any credentials + * checks or input validation. + */ + return (EINVAL); + } + if (ifp == NULL || ifp->if_ioctl == NULL) return (EOPNOTSUPP); return ((*ifp->if_ioctl)(ifp, cmd, arg)); |
