afs_fsserver_selinux(8) SELinux Policy afs_fsserver afs_fsserver_selinux(8)NAMEafs_fsserver_selinux - Security Enhanced Linux Policy for the
Security-Enhanced Linux secures the afs_fsserver processes via flexible
mandatory access control.
The afs_fsserver processes execute with the afs_fsserver_t SELinux
type. You can check if you have these processes running by executing
the ps command with the -Z qualifier.
ps -eZ | grep afs_fsserver_t
The afs_fsserver_t SELinux type can be entered via the
afs_fsserver_exec_t file type.
The default entrypoint paths for the afs_fsserver_t domain are the fol‐
/usr/afs/bin/salvager, /usr/afs/bin/volserver, /usr/afs/bin/fileserver,
SELinux defines process types (domains) for each process running on the
You can see the context of a process using the -Z option to ps
Policy governs the access confined processes have to files. SELinux
afs_fsserver policy is very flexible allowing users to setup their
afs_fsserver processes in as secure a method as possible.
The following process types are defined for afs_fsserver:
Note: semanage permissive -a afs_fsserver_t can be used to make the
process type afs_fsserver_t permissive. SELinux does not deny access to
permissive process types, but the AVC (SELinux denials) messages are
SELinux policy is customizable based on least access required.
afs_fsserver policy is extremely flexible and has several booleans that
allow you to manipulate the policy and run afs_fsserver with the tight‐
est access possible.
If you want to deny any process from ptracing or debugging any other
processes, you must turn on the deny_ptrace boolean. Enabled by
setsebool -P deny_ptrace 1
If you want to allow all domains to use other domains file descriptors,
you must turn on the domain_fd_use boolean. Enabled by default.
setsebool -P domain_fd_use 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
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
The SELinux process type afs_fsserver_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 per‐
SELinux requires files to have an extended attribute to define the file
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 afs_fsserver policy is very flexible allowing users to setup
their afs_fsserver processes in as secure a method as possible.
STANDARD FILE CONTEXT
SELinux defines the file context types for the afs_fsserver, 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 afs_fsserver_exec_t '/srv/afs_fsserver/con‐
restorecon -R -v /srv/myafs_fsserver_content
Note: SELinux often uses regular expressions to specify labels that
match multiple files.
The following file types are defined for afs_fsserver:
- Set files with the afs_fsserver_exec_t type, if you want to transi‐
tion an executable to the afs_fsserver_t domain.
/usr/afs/bin/salvager, /usr/afs/bin/volserver, /usr/afs/bin/file‐
server, /usr/libexec/openafs/salvager, /usr/libexec/ope‐
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 data‐
base. You will need to use restorecon to apply the labels.
semanage fcontext can also be used to manipulate default file context
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‐
semanage boolean can also be used to manipulate the booleans
system-config-selinux is a GUI tool available to customize SELinux pol‐
This manual page was auto-generated using sepolicy manpage .
SEE ALSOselinux(8), afs_fsserver(8), semanage(8), restorecon(8), chcon(1),
sepolicy(8) , setsebool(8)afs_fsserver 14-05-08 afs_fsserver_selinux(8)