apm_selinux(8) SELinux Policy apm apm_selinux(8)

NAME apm_selinux - Security Enhanced Linux Policy for the apm processes

DESCRIPTION Security-Enhanced Linux secures the apm processes via flexible manda- tory access control.

The apm processes execute with the apm_t SELinux type. You can check if you have these processes running by executing the ps command with the -Z qualifier.

For example:

ps -eZ | grep apm_t

ENTRYPOINTS The apm_t SELinux type can be entered via the apm_exec_t file type.

The default entrypoint paths for the apm_t domain are the following:

/usr/bin/apm

PROCESS TYPES SELinux defines process types (domains) for each process running on the system

You can see the context of a process using the -Z option to ps

Policy governs the access confined processes have to files. SELinux apm policy is very flexible allowing users to setup their apm processes in as secure a method as possible.

The following process types are defined for apm:

apm_t, apmd_t

Note: semanage permissive -a apm_t can be used to make the process type apm_t permissive. SELinux does not deny access to permissive process types, but the AVC (SELinux denials) messages are still generated.

BOOLEANS SELinux policy is customizable based on least access required. apm policy is extremely flexible and has several booleans that allow you to manipulate the policy and run apm with the tightest access possible.

If you want to allow all domains to use other domains file descriptors, you must turn on the allow_domain_fd_use boolean. Enabled by default.

setsebool -P allow_domain_fd_use 1

If you want to allow sysadm to debug or ptrace all processes, you must turn on the allow_ptrace boolean. Disabled by default.

setsebool -P allow_ptrace 1

If you want to allow all domains to have the kernel load modules, you must turn on the domain_kernel_load_modules boolean. Disabled by default.

setsebool -P domain_kernel_load_modules 1

If you want to allow all domains to execute in fips_mode, you must turn on the fips_mode boolean. Enabled by default.

setsebool -P fips_mode 1

If you want to enable reading of urandom for all domains, you must turn on the global_ssp boolean. Disabled by default.

setsebool -P global_ssp 1

FILE CONTEXTS SELinux requires files to have an extended attribute to define the file type.

You can see the context of a file using the -Z option to ls

Policy governs the access confined processes have to these files. SELinux apm policy is very flexible allowing users to setup their apm processes in as secure a method as possible.

STANDARD FILE CONTEXT

SELinux defines the file context types for the apm, if you wanted to store files with these types in a diffent paths, you need to execute the semanage command to sepecify alternate labeling and then use restorecon to put the labels on disk.

semanage fcontext -a -t apm_exec_t/srv/apm/content(/.*)? restorecon -R -v /srv/myapm_content

Note: SELinux often uses regular expressions to specify labels that match multiple files.

The following file types are defined for apm:

apm_exec_t

- Set files with the apm_exec_t type, if you want to transition an exe- cutable to the apm_t domain.

apmd_exec_t

- Set files with the apmd_exec_t type, if you want to transition an executable to the apmd_t domain.

Paths: /usr/sbin/apmd, /usr/sbin/acpid, /usr/sbin/powersaved

apmd_lock_t

- Set files with the apmd_lock_t type, if you want to treat the files as apmd lock data, stored under the /var/lock directory

apmd_log_t

- Set files with the apmd_log_t type, if you want to treat the data as apmd log data, usually stored under the /var/log directory.

apmd_tmp_t

- Set files with the apmd_tmp_t type, if you want to store apmd tempo- rary files in the /tmp directories.

apmd_var_run_t

- Set files with the apmd_var_run_t type, if you want to store the apmd files under the /run or /var/run directory.

Paths: /var/run/.?acpid.socket, /var/run/apmd.pid, /var/run/power- saved.pid, /var/run/powersave_socket

Note: File context can be temporarily modified with the chcon command. If you want to permanently change the file context you need to use the semanage fcontext command. This will modify the SELinux labeling database. You will need to use restorecon to apply the labels.

COMMANDS semanage fcontext can also be used to manipulate default file context mappings.

semanage permissive can also be used to manipulate whether or not a process type is permissive.

semanage module can also be used to enable/disable/install/remove pol- icy modules.

semanage boolean can also be used to manipulate the booleans

system-config-selinux is a GUI tool available to customize SELinux pol- icy settings.

AUTHOR This manual page was auto-generated using sepolicy manpage .

SEE ALSO selinux(8), apm(8), semanage(8), restorecon(8), chcon(1) , setsebool(8)

apm 13-09-27 apm_selinux(8)