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< SELinux‎ | LoadableModules

Revision as of 16:27, 24 May 2008 by Admin (talk | contribs) (1 revision(s))

audit2allow creating loadable modules

  • Problem: User reports seeing the following AVC message
type=AVC msg=audit(1138596151.681:104174): avc:  denied  { name_connect } for  pid=23796 comm="spamd" dest=389 scontext=root:system_r:spamd_t tcontext=system_u:object_r:ldap_port_t tclass=tcp_socket
  • Solution: use audit2allow to build loadable module to fix problem
Generating type enforcment file: spamd.te
Compiling policy: checkmodule -M -m -o spamd.mod spamd.te
semodule_package -o spamd.pp -m spamd.mod
Building package: semodule_package -o spamd.pp -m spamd.mod

******************** IMPORTANT ***********************

In order to load this newly created policy package into the kernel,
you are required to execute

semodule -i spamd.pp

Stop (medium size).png You need to have have the checkpolicy package installed to build policy modules

  • Audit2allow creates loadable module that looks like:
module spamd 1.0;

require {
role object_r;
role system_r;

class tcp_socket name_connect;

type ldap_port_t;
type spamd_t;

allow spamd_t ldap_port_t:tcp_socket name_connect;
  • semodule -i spamd.pp # Load the module
  • semodule -r spamd # remove the module
  • semodule -l # list all loadable modules