KasperskyOS Community Edition 1.2
Example of adding the system program Klog to a solution
Example of adding the system program Klog to a solution
Source code of the program
einit/src/klog_entity.c
int main(int argc, char *argv[])
{
/* This function call creates a thread
* that receives audit data from the kernel, decodes it and forwards it
* via IPC to the KlogStorage program.
* (The constant ping_KlogEntity_klog_audit_iid is defined in the header
* file KlogEntity.edl.h, which contains the automatically generated
* transport code.) */
return klog_system_audit_run(KLOG_SERVER_CONNECTION_ID ":
" KLOG_STORAGE_SERVER_CONNECTION_ID,
ping_KlogEntity_klog_audit_iid);
}
Building a program
einit/CMakeLists.txt
...
# Import Klog libraries from the
# KasperskyOS SDK
find_package (klog REQUIRED)
include_directories (${klog_INCLUDE})
# Generate transport code based on the formal specification of the
# Klog program
nk_build_edl_files (klog_edl_files
NK_MODULE "ping"
# The KlogEntity.edl file and other files
# in the formal specification of the Klog program
# are provided in the KasperskyOS SDK.
EDL "${RESOURCES}/edl/KlogEntity.edl")
# Create the executable file of the Klog program for the hardware platform
add_executable (KlogEntityHw "src/klog_entity.c")
target_link_libraries (KlogEntityHw ${klog_SYSTEM_AUDIT_LIB})
add_dependencies (KlogEntityHw klog_edl_files)
# Create the executable file of the Klog program for QEMU.
# (Identical to creating the executable file of the Klog program for
# the hardware platform, except for the build target name.
# Requires two build targets for the executable file of the
# Klog program with different names because the KLOG_ENTITY parameter of the
# CMake commands build_kos_hw_image() and build_kos_qemu_image()
# must specify different build targets.)
add_executable (KlogEntityQemu "src/klog_entity.c")
target_link_libraries (KlogEntityQemu ${klog_SYSTEM_AUDIT_LIB})
add_dependencies (KlogEntityQemu klog_edl_files)
# The Klog program does not need to be specified together with other programs
# to be included in the solution image. To include the Klog program
# in a solution, you must define the name of the build target for the executable file of this
# program via the KLOG_ENTITY parameter of the CMake commands
# build_kos_hw_image() and build_kos_qemu_image().
set (ENTITIES Client Server KlogStorageEntity FileVfs)
...
# The INIT_KlogEntity_PATH variable is used in the init.yaml.in file
# to define the name of the Klog program executable file. (The executable
# files of the Klog program for QEMU and for the hardware platform have
# different names that match the names of the build targets
# of these files by default.)
set (INIT_KlogEntity_PATH "KlogEntityHw")
# You must define the KLOG_ENTITY parameter
build_kos_hw_image (kos-image
EINIT_ENTITY EinitHw
...
KLOG_ENTITY KlogEntityHw
IMAGE_FILES ${ENTITIES})
# The INIT_KlogEntity_PATH variable is used in the init.yaml.in file
# to define the name of the Klog program executable file. (The executable
# files of the Klog program for QEMU and for the hardware platform have
# different names that match the names of the build targets
# of these files by default.)
set (INIT_KlogEntity_PATH "KlogEntityQemu")
# You must define the KLOG_ENTITY parameter
build_kos_qemu_image (kos-qemu-image
EINIT_ENTITY EinitQemu
...
KLOG_ENTITY KlogEntityQemu
IMAGE_FILES ${ENTITIES})
Program process dictionary in the init description template
einit/src/init.yaml.in
...
- name: ping.KlogEntity
# The variable INIT_KlogEntity_PATH is defined in the file einit/CMakeLists.txt.
path: @INIT_KlogEntity_PATH@
connections:
- target: ping.KlogStorageEntity
id: {var: KLOG_STORAGE_SERVER_CONNECTION_ID, include: klog_storage/client.h}
...
Policy description for the program
einit/src/security.psl.in
...
use nk.base._
...
use EDL kl.core.Core
...
use EDL ping.KlogEntity
use EDL ping.KlogStorageEntity
...
use audit_profile._
use core._
...
/* Interaction with the KlogStorage program */
request dst=ping.KlogStorageEntity {
match endpoint=klogStorage.storage {
match method=write {
match src=ping.KlogEntity { grant () }
}
}
}
response src=ping.KlogStorageEntity {
match endpoint=klogStorage.storage {
match method=write {
match dst=ping.KlogEntity { grant () }
}
}
}
error src=ping.KlogStorageEntity {
match endpoint=klogStorage.storage {
match method=write {
match dst=ping.KlogEntity { grant () }
}
}
}
...
einit/src/core.psl
...
/* Interaction with the kernel */
request dst=kl.core.Core {
match endpoint=sync.Sync {
match method=Wake {
...
match src=ping.KlogEntity { grant () }
...
}
match method=Wait {
...
match src=ping.KlogEntity { grant () }
...
}
}
match endpoint=task.Task {
match method=FreeSelfEnv {
...
match src=ping.KlogEntity { grant () }
...
}
match method=GetPath {
...
match src=ping.KlogEntity { grant () }
...
}
match method=GetName {
...
match src=ping.KlogEntity { grant () }
...
}
match method=Exit {
...
match src=ping.KlogEntity { grant () }
...
}
}
match endpoint=vmm.VMM {
match method=Allocate {
...
match src=ping.KlogEntity { grant () }
...
}
match method=Commit {
...
match src=ping.KlogEntity { grant () }
...
}
match method=Protect {
...
match src=ping.KlogEntity { grant () }
...
}
match method=Free {
...
match src=ping.KlogEntity { grant () }
...
}
}
match endpoint=thread.Thread {
match method=SetTls {
...
match src=ping.KlogEntity { grant () }
...
}
match method=Create {
...
match src=ping.KlogEntity { grant () }
...
}
match method=Resume {
...
match src=ping.KlogEntity { grant () }
...
}
match method=Attach {
...
match src=ping.KlogEntity { grant () }
...
}
match method=Exit {
...
match src=ping.KlogEntity { grant () }
...
}
match method=GetSchedPolicy {
...
match src=ping.KlogEntity { grant () }
...
}
match method=SetSchedPolicy {
...
match src=ping.KlogEntity { grant () }
...
}
}
match endpoint=hal.HAL {
match method=GetEntropy {
...
match src=ping.KlogEntity { grant () }
...
}
match method=DebugWrite {
...
match src=ping.KlogEntity { grant () }
...
}
match method=GetEnv {
...
match src=ping.KlogEntity { grant () }
...
}
}
match endpoint=handle.Handle {
match method=Close {
...
match src=ping.KlogEntity { grant () }
...
}
}
match endpoint=audit.Audit {
match src=ping.KlogEntity { grant () }
}
}
response src=kl.core.Core {
...
match dst=ping.KlogEntity { grant () }
...
}
error src=kl.core.Core {
...
match dst=ping.KlogEntity { grant () }
...
}
...
Article ID: klog_usage_example, Last review: May 21, 2024