getty_selinux(8)

1getty_selinux(8)             SELinux Policy getty             getty_selinux(8)
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NAME

6       getty_selinux - Security Enhanced Linux Policy for the getty processes
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DESCRIPTION

9       Security-Enhanced Linux secures the getty processes via flexible manda‐
10       tory access control.
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12       The getty processes execute with the  getty_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 getty_t
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ENTRYPOINTS

23       The getty_t SELinux type can be entered via the getty_exec_t file type.
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25       The default entrypoint paths for the getty_t domain are the following:
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27       /sbin/.*getty, /usr/sbin/.*getty
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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       getty policy is very flexible allowing users to setup their getty  pro‐
37       cesses in as secure a method as possible.
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39       The following process types are defined for getty:
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41       getty_t
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43       Note:  semanage  permissive  -a getty_t can be used to make the process
44       type getty_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.   getty
51       policy is extremely flexible and has several booleans that allow you to
52       manipulate the policy and run getty with the tightest access possible.
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56       If you want to allow users to resolve user passwd entries directly from
57       ldap  rather  then  using  a  sssd server, you must turn on the authlo‐
58       gin_nsswitch_use_ldap boolean. Disabled by default.
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60       setsebool -P authlogin_nsswitch_use_ldap 1
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64       If you want to allow all daemons the ability to  read/write  terminals,
65       you must turn on the daemons_use_tty boolean. Disabled by default.
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67       setsebool -P daemons_use_tty 1
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71       If  you  want  to deny any process from ptracing or debugging any other
72       processes, you  must  turn  on  the  deny_ptrace  boolean.  Enabled  by
73       default.
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75       setsebool -P deny_ptrace 1
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79       If  you  want  to  allow  any  process  to mmap any file on system with
80       attribute file_type, you must turn on the  domain_can_mmap_files  bool‐
81       ean. Enabled by default.
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83       setsebool -P domain_can_mmap_files 1
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87       If  you want to allow all domains write to kmsg_device, while kernel is
88       executed with systemd.log_target=kmsg parameter, you must turn  on  the
89       domain_can_write_kmsg boolean. Disabled by default.
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91       setsebool -P domain_can_write_kmsg 1
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95       If you want to allow all domains to use other domains file descriptors,
96       you must turn on the domain_fd_use boolean. Enabled by default.
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98       setsebool -P domain_fd_use 1
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102       If you want to allow all domains to have the kernel load  modules,  you
103       must  turn  on  the  domain_kernel_load_modules  boolean.  Disabled  by
104       default.
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106       setsebool -P domain_kernel_load_modules 1
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110       If you want to allow all domains to execute in fips_mode, you must turn
111       on the fips_mode boolean. Enabled by default.
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113       setsebool -P fips_mode 1
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117       If you want to enable reading of urandom for all domains, you must turn
118       on the global_ssp boolean. Disabled by default.
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120       setsebool -P global_ssp 1
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124       If you want to allow confined applications to run  with  kerberos,  you
125       must turn on the kerberos_enabled boolean. Enabled by default.
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127       setsebool -P kerberos_enabled 1
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131       If you want to allow logging in and using the system from /dev/console,
132       you must turn on the login_console_enabled boolean. Enabled by default.
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134       setsebool -P login_console_enabled 1
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138       If you want to allow system to run with  NIS,  you  must  turn  on  the
139       nis_enabled boolean. Disabled by default.
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141       setsebool -P nis_enabled 1
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145       If  you  want to allow confined applications to use nscd shared memory,
146       you must turn on the nscd_use_shm boolean. Disabled by default.
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148       setsebool -P nscd_use_shm 1
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MANAGED FILES

153       The SELinux process type getty_t can manage files labeled with the fol‐
154       lowing  file  types.   The paths listed are the default paths for these
155       file types.  Note the processes UID still need to have DAC permissions.
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157       getty_lock_t
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160       getty_log_t
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162            /var/log/mgetty.*.log.*
163            /var/log/vgetty.*.log.*
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165       getty_tmp_t
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168       getty_var_run_t
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170            /var/spool/fax(/.*)?
171            /var/spool/voice(/.*)?
172            /var/run/mgetty.pid.*
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174       initrc_var_run_t
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176            /var/run/utmp
177            /var/run/random-seed
178            /var/run/runlevel.dir
179            /var/run/setmixer_flag
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181       lockdev_lock_t
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183            /var/lock/lockdev(/.*)?
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185       var_run_t
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187            /run/.*
188            /var/run/.*
189            /run
190            /var/run
191            /var/run
192            /var/spool/postfix/pid
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194       wtmp_t
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196            /var/log/wtmp.*
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FILE CONTEXTS

200       SELinux requires files to have an extended attribute to define the file
201       type.
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203       You can see the context of a file using the -Z option to ls
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205       Policy  governs  the  access  confined  processes  have to these files.
206       SELinux getty policy is very flexible allowing  users  to  setup  their
207       getty processes in as secure a method as possible.
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209       STANDARD FILE CONTEXT
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211       SELinux  defines the file context types for the getty, if you wanted to
212       store files with these types in a diffent paths, you  need  to  execute
213       the  semanage  command  to  sepecify  alternate  labeling  and then use
214       restorecon to put the labels on disk.
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216       semanage fcontext -a -t getty_var_run_t '/srv/mygetty_content(/.*)?'
217       restorecon -R -v /srv/mygetty_content
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219       Note: SELinux often uses regular expressions  to  specify  labels  that
220       match multiple files.
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222       The following file types are defined for getty:
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226       getty_etc_t
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228       - Set files with the getty_etc_t type, if you want to store getty files
229       in the /etc directories.
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233       getty_exec_t
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235       - Set files with the getty_exec_t type, if you want  to  transition  an
236       executable to the getty_t domain.
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239       Paths:
240            /sbin/.*getty, /usr/sbin/.*getty
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243       getty_lock_t
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245       -  Set files with the getty_lock_t type, if you want to treat the files
246       as getty lock data, stored under the /var/lock directory
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250       getty_log_t
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252       - Set files with the getty_log_t type, if you want to treat the data as
253       getty log data, usually stored under the /var/log directory.
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256       Paths:
257            /var/log/mgetty.*.log.*, /var/log/vgetty.*.log.*
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260       getty_tmp_t
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262       -  Set files with the getty_tmp_t type, if you want to store getty tem‐
263       porary files in the /tmp directories.
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267       getty_unit_file_t
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269       - Set files with the getty_unit_file_t type, if you want to  treat  the
270       files as getty unit content.
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274       getty_var_run_t
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276       -  Set  files  with  the getty_var_run_t type, if you want to store the
277       getty files under the /run or /var/run directory.
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280       Paths:
281            /var/spool/fax(/.*)?,                      /var/spool/voice(/.*)?,
282            /var/run/mgetty.pid.*
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284
285       Note:  File context can be temporarily modified with the chcon command.
286       If you want to permanently change the file context you need to use  the
287       semanage fcontext command.  This will modify the SELinux labeling data‐
288       base.  You will need to use restorecon to apply the labels.
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COMMANDS

292       semanage fcontext can also be used to manipulate default  file  context
293       mappings.
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295       semanage  permissive  can  also  be used to manipulate whether or not a
296       process type is permissive.
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298       semanage module can also be used to enable/disable/install/remove  pol‐
299       icy modules.
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301       semanage boolean can also be used to manipulate the booleans
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304       system-config-selinux is a GUI tool available to customize SELinux pol‐
305       icy settings.
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AUTHOR

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