chrome_sandbox_selinux(8) - Linux man page

Name

chrome_sandbox_selinux - Security Enhanced Linux Policy for the chrome_sandbox processes

Description

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

The chrome_sandbox processes execute with the chrome_sandbox_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 chrome_sandbox_t

Entrypoints

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

/usr/lib(64)?/chromium-browser/chrome-sandbox, /opt/google/chrome/chrome-sandbox

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

The following process types are defined for chrome_sandbox:

chrome_sandbox_t, chrome_sandbox_nacl_t

Note: semanage permissive -a chrome_sandbox_t

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

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

The following file types are defined for chrome_sandbox:

chrome_sandbox_exec_t

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

chrome_sandbox_nacl_exec_t

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

chrome_sandbox_tmp_t

- Set files with the chrome_sandbox_tmp_t type, if you want to store chrome sandbox temporary files in the /tmp directories.

chrome_sandbox_tmpfs_t

- Set files with the chrome_sandbox_tmpfs_t type, if you want to store chrome sandbox files on a tmpfs file system.

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 chrome_sandbox_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.

cgroup_t

/cgroup(/.*)?

chrome_sandbox_tmp_t
chrome_sandbox_tmpfs_t
initrc_tmp_t
mnt_t

/mnt(/[^/]*)

/mnt(/[^/]*)?

/rhev(/[^/]*)?

/media(/[^/]*)

/media(/[^/]*)?

/etc/rhgb(/.*)?

/media/.hal-.*

/net

/afs

/misc

/rhev

nfs_t
tmp_t

/tmp

/usr/tmp

/var/tmp

/var/tmp/vi.recover

user_fonts_cache_t

/home/[^/]*/.fonts/auto(/.*)?

/home/[^/]*/.fontconfig(/.*)?

/home/[^/]*/.fonts.cache-.*

user_tmpfs_t

/dev/shm/mono.*

/dev/shm/pulse-shm.*

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.

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.