Krister Johansen 4548b683b7 Introduce a sysctl that modifies the value of PROT_SOCK. ... Add net.ipv4.ip_unprivileged_port_start, which is a per namespace sysctl that denotes the first unprivileged inet port in the namespace. To disable all privileged ports set this to zero. It also checks for overlap with the local port range. The privileged and local range may not overlap. The use case for this change is to allow containerized processes to bind to priviliged ports, but prevent them from ever being allowed to modify their container's network configuration. The latter is accomplished by ensuring that the network namespace is not a child of the user namespace. This modification was needed to allow the container manager to disable a namespace's priviliged port restrictions without exposing control of the network namespace to processes in the user namespace. Signed-off-by: Krister Johansen <kjlx@templeofstupid.com> Signed-off-by: David S. Miller <davem@davemloft.net>		2017-01-24 12:10:51 -05:00
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include
ss
.gitignore
avc.c
exports.c
hooks.c
Kconfig
Makefile
netif.c
netlabel.c
netlink.c
netnode.c
netport.c
nlmsgtab.c
selinuxfs.c
xfrm.c