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| author | andre <andre@FreeBSD.org> | 2006-02-18 17:16:18 +0000 |
|---|---|---|
| committer | andre <andre@FreeBSD.org> | 2006-02-18 17:16:18 +0000 |
| commit | 6f25a951392d9da6e7c7603e3ac5f6887a808328 (patch) | |
| tree | 6c594df5859b7264d04576d77ddafc68c86be436 /sys/kern/uipc_domain.c | |
| parent | a8296c797205758f4716e8554c70740ae7decab8 (diff) | |
| download | FreeBSD-src-6f25a951392d9da6e7c7603e3ac5f6887a808328.zip FreeBSD-src-6f25a951392d9da6e7c7603e3ac5f6887a808328.tar.gz | |
The sysctls kern.ipc.[max_linkhdr|max_protohdr|max_hdr|max_datalen]
can't be changed from userland. Make them read-only and provide
descriptions.
kern.ipc.max_datalen must never be less than one byte. Enforce this
with a panic in net_init_domain().
Sponsored by: TCP/IP Optimization Fundraise 2005
MFC after: 3 days
Diffstat (limited to 'sys/kern/uipc_domain.c')
| -rw-r--r-- | sys/kern/uipc_domain.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/sys/kern/uipc_domain.c b/sys/kern/uipc_domain.c index bb0be74..7a26ff5 100644 --- a/sys/kern/uipc_domain.c +++ b/sys/kern/uipc_domain.c @@ -149,6 +149,8 @@ net_init_domain(struct domain *dp) */ max_hdr = max_linkhdr + max_protohdr; max_datalen = MHLEN - max_hdr; + if (max_datalen < 1) + panic("%s: max_datalen < 1", __func__); } /* |
