useradd_selinux(8)

1useradd_selinux(8)          SELinux Policy useradd          useradd_selinux(8)
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NAME

6       useradd_selinux  -  Security Enhanced Linux Policy for the useradd pro‐
7       cesses
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DESCRIPTION

10       Security-Enhanced Linux secures  the  useradd  processes  via  flexible
11       mandatory access control.
12
13       The  useradd processes execute with the useradd_t SELinux type. You can
14       check if you have these processes running by executing the  ps  command
15       with the -Z qualifier.
16
17       For example:
18
19       ps -eZ | grep useradd_t
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21
22

ENTRYPOINTS

24       The  useradd_t  SELinux  type  can  be  entered via the useradd_exec_t,
25       user_home_t file types.
26
27       The default entrypoint paths for the useradd_t domain are  the  follow‐
28       ing:
29
30       /usr/sbin/useradd,         /usr/sbin/userdel,        /usr/sbin/usermod,
31       /usr/sbin/newusers, /home/[^/]+/.+
32

PROCESS TYPES

34       SELinux defines process types (domains) for each process running on the
35       system
36
37       You can see the context of a process using the -Z option to ps
38
39       Policy  governs  the  access confined processes have to files.  SELinux
40       useradd policy is very flexible allowing users to setup  their  useradd
41       processes in as secure a method as possible.
42
43       The following process types are defined for useradd:
44
45       useradd_t
46
47       Note:  semanage permissive -a useradd_t can be used to make the process
48       type useradd_t permissive. SELinux does not deny access  to  permissive
49       process  types, but the AVC (SELinux denials) messages are still gener‐
50       ated.
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52

BOOLEANS

54       SELinux policy is customizable based on least access required.  useradd
55       policy is extremely flexible and has several booleans that allow you to
56       manipulate the policy and run useradd with the tightest  access  possi‐
57       ble.
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59
60
61       If you want to allow users to resolve user passwd entries directly from
62       ldap rather then using a sssd server, you  must  turn  on  the  authlo‐
63       gin_nsswitch_use_ldap boolean. Disabled by default.
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65       setsebool -P authlogin_nsswitch_use_ldap 1
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67
68
69       If  you  want to allow all daemons the ability to read/write terminals,
70       you must turn on the daemons_use_tty boolean. Disabled by default.
71
72       setsebool -P daemons_use_tty 1
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75
76       If you want to deny any process from ptracing or  debugging  any  other
77       processes,  you  must  turn  on  the  deny_ptrace  boolean.  Enabled by
78       default.
79
80       setsebool -P deny_ptrace 1
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82
83
84       If you want to allow any process  to  mmap  any  file  on  system  with
85       attribute  file_type,  you must turn on the domain_can_mmap_files bool‐
86       ean. Enabled by default.
87
88       setsebool -P domain_can_mmap_files 1
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90
91
92       If you want to allow all domains write to kmsg_device, while kernel  is
93       executed  with  systemd.log_target=kmsg parameter, you must turn on the
94       domain_can_write_kmsg boolean. Disabled by default.
95
96       setsebool -P domain_can_write_kmsg 1
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98
99
100       If you want to allow all domains to use other domains file descriptors,
101       you must turn on the domain_fd_use boolean. Enabled by default.
102
103       setsebool -P domain_fd_use 1
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105
106
107       If  you  want to allow all domains to have the kernel load modules, you
108       must  turn  on  the  domain_kernel_load_modules  boolean.  Disabled  by
109       default.
110
111       setsebool -P domain_kernel_load_modules 1
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113
114
115       If you want to allow all domains to execute in fips_mode, you must turn
116       on the fips_mode boolean. Enabled by default.
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118       setsebool -P fips_mode 1
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120
121
122       If you want to enable reading of urandom for all domains, you must turn
123       on the global_ssp boolean. Disabled by default.
124
125       setsebool -P global_ssp 1
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127
128
129       If  you  want  to allow confined applications to run with kerberos, you
130       must turn on the kerberos_enabled boolean. Enabled by default.
131
132       setsebool -P kerberos_enabled 1
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134
135
136       If you want to allow system to run with  NIS,  you  must  turn  on  the
137       nis_enabled boolean. Disabled by default.
138
139       setsebool -P nis_enabled 1
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141
142
143       If  you  want to allow confined applications to use nscd shared memory,
144       you must turn on the nscd_use_shm boolean. Disabled by default.
145
146       setsebool -P nscd_use_shm 1
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148
149
150       If you want to allow samba to act as the domain controller, add  users,
151       groups  and  change  passwords,  you must turn on the samba_domain_con‐
152       troller boolean. Disabled by default.
153
154       setsebool -P samba_domain_controller 1
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157
158       If you want to support NFS home  directories,  you  must  turn  on  the
159       use_nfs_home_dirs boolean. Disabled by default.
160
161       setsebool -P use_nfs_home_dirs 1
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163
164
165       If  you  want  to  support SAMBA home directories, you must turn on the
166       use_samba_home_dirs boolean. Disabled by default.
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168       setsebool -P use_samba_home_dirs 1
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171

MANAGED FILES

173       The SELinux process type useradd_t can manage files  labeled  with  the
174       following file types.  The paths listed are the default paths for these
175       file types.  Note the processes UID still need to have DAC permissions.
176
177       cifs_t
178
179
180       default_context_t
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182            /etc/selinux/([^/]*/)?contexts(/.*)?
183            /root/.default_contexts
184
185       etc_runtime_t
186
187            /[^/]+
188            /etc/mtab.*
189            /etc/blkid(/.*)?
190            /etc/nologin.*
191            /etc/.fstab.hal..+
192            /halt
193            /fastboot
194            /poweroff
195            /etc/cmtab
196            /forcefsck
197            /.autofsck
198            /.suspended
199            /fsckoptions
200            /var/.updated
201            /etc/.updated
202            /.autorelabel
203            /etc/securetty
204            /etc/nohotplug
205            /etc/killpower
206            /etc/ioctl.save
207            /etc/fstab.REVOKE
208            /etc/network/ifstate
209            /etc/sysconfig/hwconf
210            /etc/ptal/ptal-printd-like
211            /etc/sysconfig/iptables.save
212            /etc/xorg.conf.d/00-system-setup-keyboard.conf
213            /etc/X11/xorg.conf.d/00-system-setup-keyboard.conf
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215       etc_t
216
217            /etc/.*
218            /usr/etc(/.*)?
219            /var/ftp/etc(/.*)?
220            /var/lib/openshift/.limits.d(/.*)?
221            /var/lib/openshift/.openshift-proxy.d(/.*)?
222            /var/lib/openshift/.stickshift-proxy.d(/.*)?
223            /var/lib/stickshift/.limits.d(/.*)?
224            /var/lib/stickshift/.stickshift-proxy.d(/.*)?
225            /var/named/chroot/etc(/.*)?
226            /etc/ipsec.d/examples(/.*)?
227            /var/spool/postfix/etc(/.*)?
228            /etc
229            /etc/cups/client.conf
230
231       faillog_t
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233            /var/log/btmp.*
234            /var/log/faillog.*
235            /var/log/tallylog.*
236            /var/run/faillock(/.*)?
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238       file_context_t
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240            /etc/selinux/([^/]*/)?contexts/files(/.*)?
241
242       httpd_user_content_type
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244
245       httpd_user_script_exec_type
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247
248       initrc_var_run_t
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250            /var/run/utmp
251            /var/run/random-seed
252            /var/run/runlevel.dir
253            /var/run/setmixer_flag
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255       krb5kdc_var_lib_t
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257            /var/lib/kdcproxy(/.*)?
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259       lastlog_t
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261            /var/log/lastlog.*
262
263       mail_spool_t
264
265            /var/mail(/.*)?
266            /var/spool/imap(/.*)?
267            /var/spool/mail(/.*)?
268            /var/spool/smtpd(/.*)?
269
270       nfs_t
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272
273       openshift_file_type
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275
276       passwd_file_t
277
278            /etc/group[-+]?
279            /etc/passwd[-+]?
280            /etc/passwd.adjunct.*
281            /etc/ptmptmp
282            /etc/.pwd.lock
283            /etc/group.lock
284            /etc/passwd.OLD
285            /etc/passwd.lock
286
287       security_t
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289            /selinux
290
291       selinux_config_t
292
293            /etc/selinux(/.*)?
294            /etc/selinux/([^/]*/)?seusers
295            /etc/selinux/([^/]*/)?users(/.*)?
296            /etc/selinux/([^/]*/)?setrans.conf
297            /var/lib/sepolgen(/.*)?
298
299       selinux_login_config_t
300
301            /etc/selinux/([^/]*/)?logins(/.*)?
302
303       semanage_read_lock_t
304
305            /etc/selinux/([^/]*/)?modules/semanage.read.LOCK
306            /var/lib/selinux/[^/]+/semanage.read.LOCK
307
308       semanage_store_t
309
310            /etc/selinux/([^/]*/)?policy(/.*)?
311            /etc/selinux/(minimum|mls|targeted)/active(/.*)?
312            /etc/selinux/([^/]*/)?modules/(active|tmp|previous)(/.*)?
313            /var/lib/selinux(/.*)?
314            /etc/share/selinux/mls(/.*)?
315            /etc/share/selinux/targeted(/.*)?
316
317       semanage_tmp_t
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319
320       semanage_trans_lock_t
321
322            /etc/selinux/([^/]*/)?modules/semanage.trans.LOCK
323            /var/lib/selinux/[^/]+/semanage.trans.LOCK
324
325       shadow_t
326
327            /etc/shadow.*
328            /etc/gshadow.*
329            /etc/nshadow.*
330            /var/db/shadow.*
331            /etc/security/opasswd
332            /etc/security/opasswd.old
333
334       smsd_var_lib_t
335
336            /var/lib/smstools(/.*)?
337
338       stapserver_var_lib_t
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340            /var/lib/stap-server(/.*)?
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342       user_home_type
343
344            all user home files
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346       useradd_var_run_t
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349

FILE CONTEXTS

351       SELinux requires files to have an extended attribute to define the file
352       type.
353
354       You can see the context of a file using the -Z option to ls
355
356       Policy  governs  the  access  confined  processes  have to these files.
357       SELinux useradd policy is very flexible allowing users to  setup  their
358       useradd processes in as secure a method as possible.
359
360       STANDARD FILE CONTEXT
361
362       SELinux  defines  the file context types for the useradd, if you wanted
363       to store files with these types in a diffent paths, you need to execute
364       the  semanage  command  to  sepecify  alternate  labeling  and then use
365       restorecon to put the labels on disk.
366
367       semanage  fcontext   -a   -t   useradd_var_run_t   '/srv/myuseradd_con‐
368       tent(/.*)?'
369       restorecon -R -v /srv/myuseradd_content
370
371       Note:  SELinux  often  uses  regular expressions to specify labels that
372       match multiple files.
373
374       The following file types are defined for useradd:
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377
378       useradd_exec_t
379
380       - Set files with the useradd_exec_t type, if you want to transition  an
381       executable to the useradd_t domain.
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383
384       Paths:
385            /usr/sbin/useradd,      /usr/sbin/userdel,      /usr/sbin/usermod,
386            /usr/sbin/newusers
387
388
389       useradd_var_run_t
390
391       - Set files with the useradd_var_run_t type, if you want to  store  the
392       useradd files under the /run or /var/run directory.
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395
396       Note:  File context can be temporarily modified with the chcon command.
397       If you want to permanently change the file context you need to use  the
398       semanage fcontext command.  This will modify the SELinux labeling data‐
399       base.  You will need to use restorecon to apply the labels.
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COMMANDS

403       semanage fcontext can also be used to manipulate default  file  context
404       mappings.
405
406       semanage  permissive  can  also  be used to manipulate whether or not a
407       process type is permissive.
408
409       semanage module can also be used to enable/disable/install/remove  pol‐
410       icy modules.
411
412       semanage boolean can also be used to manipulate the booleans
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414
415       system-config-selinux is a GUI tool available to customize SELinux pol‐
416       icy settings.
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418

AUTHOR

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