sanlock_selinux(8) - Linux man page

Name

sanlock_selinux - Security Enhanced Linux Policy for the sanlock processes

Description

Security-Enhanced Linux secures the sanlock processes via flexible mandatory access control.

The sanlock processes execute with the sanlock_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 sanlock_t

Entrypoints

The sanlock_t SELinux type can be entered via the "sanlock_exec_t" file type. The default entrypoint paths for the sanlock_t domain are the following:"

/usr/sbin/sanlock

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 sanlock policy is very flexible allowing users to setup their sanlock processes in as secure a method as possible.

The following process types are defined for sanlock:

sanlock_t

Note: semanage permissive -a sanlock_t

can be used to make the process type sanlock_t permissive. Permissive process types are not denied access by SELinux. AVC messages will still be generated.

Booleans

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

If you want to allow sanlock to read/write fuse files, you must turn on the sanlock_use_fusefs boolean.

setsebool -P sanlock_use_fusefs 1

If you want to allow sanlock to manage cifs files, you must turn on the sanlock_use_samba boolean.

setsebool -P sanlock_use_samba 1

If you want to allow confined virtual guests to interact with the sanlock, you must turn on the virt_use_sanlock boolean.

setsebool -P virt_use_sanlock 1

If you want to allow sanlock to manage nfs files, you must turn on the sanlock_use_nfs boolean.

setsebool -P sanlock_use_nfs 1

If you want to allow sanlock to read/write fuse files, you must turn on the sanlock_use_fusefs boolean.

setsebool -P sanlock_use_fusefs 1

If you want to allow sanlock to manage cifs files, you must turn on the sanlock_use_samba boolean.

setsebool -P sanlock_use_samba 1

If you want to allow confined virtual guests to interact with the sanlock, you must turn on the virt_use_sanlock boolean.

setsebool -P virt_use_sanlock 1

If you want to allow sanlock to manage nfs files, you must turn on the sanlock_use_nfs boolean.

setsebool -P sanlock_use_nfs 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 sanlock policy is very flexible allowing users to setup their sanlock processes in as secure a method as possible.

The following file types are defined for sanlock:

sanlock_exec_t

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

sanlock_initrc_exec_t

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

sanlock_log_t

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

sanlock_var_run_t

- Set files with the sanlock_var_run_t type, if you want to store the sanlock files under the /run directory.

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.

Managed Files

The SELinux process type sanlock_t can manage files labeled with the following file types. The paths listed are the default paths for these file types. Note the processes UID still need to have DAC permissions.

initrc_tmp_t

mnt_t

/mnt(/[^/]*)

/mnt(/[^/]*)?

/rhev(/[^/]*)?

/media(/[^/]*)

/media(/[^/]*)?

/etc/rhgb(/.*)?

/media/.hal-.*

/net

/afs

/misc

/rhev

root_t

/initrd

sanlock_log_t

/var/log/sanlock.log.*

sanlock_var_run_t

/var/run/sanlock(/.*)?

tmp_t

/tmp

/usr/tmp

/var/tmp

/var/tmp/vi.recover

virt_var_lib_t

/var/lib/oz(/.*)?

/var/lib/libvirt(/.*)?

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 policy modules.

semanage boolean can also be used to manipulate the booleans

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

Author

This manual page was auto-generated using sepolicy manpage by mgrepl.