ptp4l_selinux(8)

1ptp4l_selinux(8)             SELinux Policy ptp4l             ptp4l_selinux(8)
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NAME

6       ptp4l_selinux - Security Enhanced Linux Policy for the ptp4l processes
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DESCRIPTION

9       Security-Enhanced Linux secures the ptp4l processes via flexible manda‐
10       tory access control.
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12       The ptp4l processes execute with the  ptp4l_t  SELinux  type.  You  can
13       check  if  you have these processes running by executing the ps command
14       with the -Z qualifier.
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16       For example:
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18       ps -eZ | grep ptp4l_t
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ENTRYPOINTS

23       The ptp4l_t SELinux type can be entered via the ptp4l_exec_t file type.
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25       The default entrypoint paths for the ptp4l_t domain are the following:
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27       /usr/sbin/ptp4l
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PROCESS TYPES

30       SELinux defines process types (domains) for each process running on the
31       system
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33       You can see the context of a process using the -Z option to ps
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35       Policy  governs  the  access confined processes have to files.  SELinux
36       ptp4l policy is very flexible allowing users to setup their ptp4l  pro‐
37       cesses in as secure a method as possible.
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39       The following process types are defined for ptp4l:
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41       ptp4l_t
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43       Note:  semanage  permissive  -a ptp4l_t can be used to make the process
44       type ptp4l_t permissive. SELinux does not  deny  access  to  permissive
45       process  types, but the AVC (SELinux denials) messages are still gener‐
46       ated.
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BOOLEANS

50       SELinux policy is customizable based on least access  required.   ptp4l
51       policy is extremely flexible and has several booleans that allow you to
52       manipulate the policy and run ptp4l with the tightest access possible.
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56       If you want to allow all daemons to write corefiles to /, you must turn
57       on the daemons_dump_core boolean. Disabled by default.
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59       setsebool -P daemons_dump_core 1
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63       If  you  want  to enable cluster mode for daemons, you must turn on the
64       daemons_enable_cluster_mode boolean. Enabled by default.
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66       setsebool -P daemons_enable_cluster_mode 1
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70       If you want to allow all daemons to use tcp wrappers, you must turn  on
71       the daemons_use_tcp_wrapper boolean. Disabled by default.
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73       setsebool -P daemons_use_tcp_wrapper 1
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77       If  you  want to allow all daemons the ability to read/write terminals,
78       you must turn on the daemons_use_tty boolean. Disabled by default.
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80       setsebool -P daemons_use_tty 1
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84       If you want to deny any process from ptracing or  debugging  any  other
85       processes,  you  must  turn  on  the  deny_ptrace  boolean.  Enabled by
86       default.
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88       setsebool -P deny_ptrace 1
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92       If you want to allow any process  to  mmap  any  file  on  system  with
93       attribute  file_type,  you must turn on the domain_can_mmap_files bool‐
94       ean. Enabled by default.
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96       setsebool -P domain_can_mmap_files 1
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100       If you want to allow all domains write to kmsg_device, while kernel  is
101       executed  with  systemd.log_target=kmsg parameter, you must turn on the
102       domain_can_write_kmsg boolean. Disabled by default.
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104       setsebool -P domain_can_write_kmsg 1
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108       If you want to allow all domains to use other domains file descriptors,
109       you must turn on the domain_fd_use boolean. Enabled by default.
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111       setsebool -P domain_fd_use 1
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115       If  you  want to allow all domains to have the kernel load modules, you
116       must  turn  on  the  domain_kernel_load_modules  boolean.  Disabled  by
117       default.
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119       setsebool -P domain_kernel_load_modules 1
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123       If you want to allow all domains to execute in fips_mode, you must turn
124       on the fips_mode boolean. Enabled by default.
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126       setsebool -P fips_mode 1
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130       If you want to enable reading of urandom for all domains, you must turn
131       on the global_ssp boolean. Disabled by default.
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133       setsebool -P global_ssp 1
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MANAGED FILES

138       The SELinux process type ptp4l_t can manage files labeled with the fol‐
139       lowing file types.  The paths listed are the default  paths  for  these
140       file types.  Note the processes UID still need to have DAC permissions.
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142       chronyd_tmpfs_t
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145       cluster_conf_t
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147            /etc/cluster(/.*)?
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149       cluster_var_lib_t
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151            /var/lib/pcsd(/.*)?
152            /var/lib/cluster(/.*)?
153            /var/lib/openais(/.*)?
154            /var/lib/pengine(/.*)?
155            /var/lib/corosync(/.*)?
156            /usr/lib/heartbeat(/.*)?
157            /var/lib/heartbeat(/.*)?
158            /var/lib/pacemaker(/.*)?
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160       cluster_var_run_t
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162            /var/run/crm(/.*)?
163            /var/run/cman_.*
164            /var/run/rsctmp(/.*)?
165            /var/run/aisexec.*
166            /var/run/heartbeat(/.*)?
167            /var/run/corosync-qnetd(/.*)?
168            /var/run/corosync-qdevice(/.*)?
169            /var/run/cpglockd.pid
170            /var/run/corosync.pid
171            /var/run/rgmanager.pid
172            /var/run/cluster/rgmanager.sk
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174       gpsd_tmpfs_t
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177       root_t
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179            /sysroot/ostree/deploy/.*-atomic.*/deploy(/.*)?
180            /
181            /initrd
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183       timemaster_tmpfs_t
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186       timemaster_var_run_t
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188            /var/run/timemaster(/.*)?
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FILE CONTEXTS

192       SELinux requires files to have an extended attribute to define the file
193       type.
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195       You can see the context of a file using the -Z option to ls
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197       Policy governs the access  confined  processes  have  to  these  files.
198       SELinux  ptp4l  policy  is  very flexible allowing users to setup their
199       ptp4l processes in as secure a method as possible.
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201       STANDARD FILE CONTEXT
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203       SELinux defines the file context types for the ptp4l, if you wanted  to
204       store  files  with  these types in a diffent paths, you need to execute
205       the semanage command  to  sepecify  alternate  labeling  and  then  use
206       restorecon to put the labels on disk.
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208       semanage fcontext -a -t ptp4l_unit_file_t '/srv/myptp4l_content(/.*)?'
209       restorecon -R -v /srv/myptp4l_content
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211       Note:  SELinux  often  uses  regular expressions to specify labels that
212       match multiple files.
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214       The following file types are defined for ptp4l:
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218       ptp4l_exec_t
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220       - Set files with the ptp4l_exec_t type, if you want  to  transition  an
221       executable to the ptp4l_t domain.
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225       ptp4l_unit_file_t
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227       -  Set  files with the ptp4l_unit_file_t type, if you want to treat the
228       files as ptp4l unit content.
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232       Note: File context can be temporarily modified with the chcon  command.
233       If  you want to permanently change the file context you need to use the
234       semanage fcontext command.  This will modify the SELinux labeling data‐
235       base.  You will need to use restorecon to apply the labels.
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COMMANDS

239       semanage  fcontext  can also be used to manipulate default file context
240       mappings.
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242       semanage permissive can also be used to manipulate  whether  or  not  a
243       process type is permissive.
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245       semanage  module can also be used to enable/disable/install/remove pol‐
246       icy modules.
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248       semanage boolean can also be used to manipulate the booleans
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251       system-config-selinux is a GUI tool available to customize SELinux pol‐
252       icy settings.
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AUTHOR

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