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| author | Roy Marples <roy@marples.name> | 2019-11-28 16:41:15 +0000 |
|---|---|---|
| committer | Roy Marples <roy@marples.name> | 2019-11-28 16:41:15 +0000 |
| commit | d5786118da1bad4c247631cae86344f1b249a8cb (patch) | |
| tree | b62b1e3a7ba544c9e842e6f595b25fdaab8059b4 /configure | |
| parent | f90486b1657f0331ae5e7d817b9ba3de90856d52 (diff) | |
| download | dhcpcd-d5786118da1bad4c247631cae86344f1b249a8cb.tar.xz | |
privsep: Add support for priviledge separation
Not enabled by default - enable with ./configure --enable-privsep
Requires a user added to the system - default _dhcpcd
Several processes will be spawned off the main state engine:
a privileged actioneer and a generic network proxy.
Only the privileged actioneer process will retain root permissions.
When required, the privileged actioneer will also spawn
BPF listeners for BOOTP (DHCP) and ARP.
The BOOTP BPF listener should be a short lived process.
On kernels with RFC 5227 support, the ARP BPF listener will only
be used for ARPing and announcing a preferred address and will
also be a short lived process.
When not running in master mode, an address listener will be
spawned for each address (with the exception of RA dervived addresses)
dhcpcd cares about.
TODO:
* Solaris support.
* ARP BPF address filtering.
Diffstat (limited to 'configure')
| -rwxr-xr-x | configure | 19 |
1 files changed, 19 insertions, 0 deletions
@@ -11,6 +11,7 @@ ARP= ARPING= IPV4LL= INET6= +PRIVSEP= ARC4RANDOM= CLOSEFROM= RBTREE= @@ -65,6 +66,8 @@ for x do --enable-embedded) EMBEDDED=yes;; --disable-auth) AUTH=no;; --enable-auth) AUTH=yes;; + --disable-privsep) PRIVSEP=no;; + --enable-privsep) PRIVSEP=yes;; --prefix) PREFIX=$var;; --sysconfdir) SYSCONFDIR=$var;; --bindir|--sbindir) SBINDIR=$var;; @@ -524,6 +527,22 @@ if [ -z "$AUTH" -o "$AUTH" = yes ]; then echo "SRCS+= auth.c" >>$CONFIG_MK fi +if [ "$PRIVSEP" = yes ]; then + echo "Enabling Priviledge Separation" + echo "WARNING: This is an experimental feature" + echo "CPPFLAGS+= -DPRIVSEP" >>$CONFIG_MK + echo "DHCPCD_SRCS+= privsep.c privsep-root.c privsep-inet.c" \ + >>$CONFIG_MK + if [ -z "$INET" ] || [ "$INET" = yes ]; then + echo "DHCPCD_SRCS+= privsep-bpf.c" >>$CONFIG_MK + fi + case "$OS" in + linux*) echo "DHCPCD_SRCS+= privsep-linux.c" >>$CONFIG_MK;; + solaris*|sunos*) echo "DHCPCD_SRCS+= privsep-sun.c" >>$CONFIG_MK;; + *) echo "DHCPCD_SRCS+= privsep-bsd.c" >>$CONFIG_MK;; + esac +fi + echo "Using compiler .. $CC" # Add CPPFLAGS and CFLAGS to CC for testing features XCC="$CC `$SED -n -e 's/CPPFLAGS+=*\(.*\)/\1/p' $CONFIG_MK`" |