1user_selinux(8)        user SELinux Policy documentation       user_selinux(8)
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NAME

6       user_u - Generic unprivileged user - Security Enhanced Linux Policy
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DESCRIPTION

10       user_u  is an SELinux User defined in the SELinux policy. SELinux users
11       have default roles, user_r.  The  default  role  has  a  default  type,
12       user_t, associated with it.
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14       The  SELinux  user  will  usually login to a system with a context that
15       looks like:
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17       user_u:user_r:user_t:s0
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19       Linux users are automatically  assigned  an  SELinux  users  at  login.
20       Login  programs  use  the SELinux User to assign initial context to the
21       user's shell.
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23       SELinux policy uses the context to control the user's access.
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25       By default  all  users  are  assigned  to  the  SELinux  user  via  the
26       __default__ flag
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28       On  Targeted  policy  systems  the  __default__ user is assigned to the
29       unconfined_u SELinux user.
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31       You can list all Linux User to SELinux user mapping using:
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33       semanage login -l
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35       If you wanted to change the default user  mapping  to  use  the  user_u
36       user, you would execute:
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38       semanage login -m -s user_u __default__
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40
41       If  you  want to map the one Linux user (joe) to the SELinux user user,
42       you would execute:
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44       $ semanage login -a -s user_u joe
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USER DESCRIPTION

49       The SELinux user user_u is defined in policy as  a  unprivileged  user.
50       SELinux  prevents  unprivileged  users  from doing administration tasks
51       without transitioning to a different role.
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SUDO

X WINDOWS LOGIN

56       The SELinux user user_u is able to X Windows login.
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NETWORK

60       The SELinux user user_u is able to listen on the following tcp ports.
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62              6000-6020
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64              3689
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66              all ports >= 1024
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68              all ports without defined types
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70              32768-60999
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73       The SELinux user user_u is able to connect to the following tcp ports.
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75              8955
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77              53,853
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79              all ports
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81              389,636,3268,3269,7389
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83              all ports without defined types
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85              32768-60999
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87              all ports < 1024
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89              9080
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91              88,750,4444
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94       The SELinux user user_u is able to listen on the following udp ports.
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96              32768-60999
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98              all ports without defined types
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100              all ports >= 1024
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102
103       The SELinux user user_u is able to connect to the following tcp ports.
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105              8955
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107              53,853
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109              all ports
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111              389,636,3268,3269,7389
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113              all ports without defined types
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115              32768-60999
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117              all ports < 1024
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119              9080
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121              88,750,4444
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BOOLEANS

125       SELinux policy is customizable based on least  access  required.   user
126       policy is extremely flexible and has several booleans that allow you to
127       manipulate the policy and run user with the tightest access possible.
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130
131       If you want to determine whether crond can execute  jobs  in  the  user
132       domain  as  opposed to the the generic cronjob domain, you must turn on
133       the cron_userdomain_transition boolean. Enabled by default.
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135       setsebool -P cron_userdomain_transition 1
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138
139       If you want to deny all system processes and Linux users to  use  blue‐
140       tooth wireless technology, you must turn on the deny_bluetooth boolean.
141       Enabled by default.
142
143       setsebool -P deny_bluetooth 1
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147       If you want to deny user domains applications to map a memory region as
148       both  executable  and  writable,  this  is dangerous and the executable
149       should be reported in bugzilla, you must turn on the deny_execmem bool‐
150       ean. Enabled by default.
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152       setsebool -P deny_execmem 1
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156       If  you  want  to deny any process from ptracing or debugging any other
157       processes, you  must  turn  on  the  deny_ptrace  boolean.  Enabled  by
158       default.
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160       setsebool -P deny_ptrace 1
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164       If you want to allow all domains to execute in fips_mode, you must turn
165       on the fips_mode boolean. Enabled by default.
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167       setsebool -P fips_mode 1
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170
171       If you want to determine whether calling user domains can  execute  Git
172       daemon  in  the  git_session_t  domain,  you  must turn on the git_ses‐
173       sion_users boolean. Disabled by default.
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175       setsebool -P git_session_users 1
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178
179       If you  want  to  allow  httpd  cgi  support,  you  must  turn  on  the
180       httpd_enable_cgi boolean. Enabled by default.
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182       setsebool -P httpd_enable_cgi 1
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186       If  you  want  to  determine  whether  calling user domains can execute
187       Polipo daemon in the polipo_session_t domain,  you  must  turn  on  the
188       polipo_session_users boolean. Disabled by default.
189
190       setsebool -P polipo_session_users 1
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194       If  you  want to allow pppd to be run for a regular user, you must turn
195       on the pppd_for_user boolean. Disabled by default.
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197       setsebool -P pppd_for_user 1
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201       If you want to  allow  all  unconfined  executables  to  use  libraries
202       requiring  text  relocation  that  are not labeled textrel_shlib_t, you
203       must turn on the selinuxuser_execmod boolean. Disabled by default.
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205       setsebool -P selinuxuser_execmod 1
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209       If you want to allow unconfined executables to make  their  stack  exe‐
210       cutable.   This  should  never, ever be necessary. Probably indicates a
211       badly coded executable, but could indicate an attack.  This  executable
212       should  be reported in bugzilla, you must turn on the selinuxuser_exec‐
213       stack boolean. Disabled by default.
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215       setsebool -P selinuxuser_execstack 1
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219       If you want to allow users to connect to the local  mysql  server,  you
220       must turn on the selinuxuser_mysql_connect_enabled boolean. Disabled by
221       default.
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223       setsebool -P selinuxuser_mysql_connect_enabled 1
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227       If you want to allow confined users the ability to execute the ping and
228       traceroute  commands,  you  must  turn on the selinuxuser_ping boolean.
229       Disabled by default.
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231       setsebool -P selinuxuser_ping 1
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235       If you want to allow user to r/w files on filesystems that do not  have
236       extended  attributes  (FAT, CDROM, FLOPPY), you must turn on the selin‐
237       uxuser_rw_noexattrfile boolean. Enabled by default.
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239       setsebool -P selinuxuser_rw_noexattrfile 1
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242
243       If you want to allow unprivileged user  to  create  and  transition  to
244       svirt  domains, you must turn on the unprivuser_use_svirt boolean. Dis‐
245       abled by default.
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247       setsebool -P unprivuser_use_svirt 1
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251       If you want to support NFS home  directories,  you  must  turn  on  the
252       use_nfs_home_dirs boolean. Enabled by default.
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254       setsebool -P use_nfs_home_dirs 1
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258       If  you  want  to  support SAMBA home directories, you must turn on the
259       use_samba_home_dirs boolean. Disabled by default.
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261       setsebool -P use_samba_home_dirs 1
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HOME_EXEC

266       The SELinux user user_u is able execute home content files.
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TRANSITIONS

270       Three things can happen when user_t attempts to execute a program.
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272       1. SELinux Policy can deny user_t from executing the program.
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276       2. SELinux Policy can allow user_t to execute the program in  the  cur‐
277       rent user type.
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279              Execute  the  following  to  see the types that the SELinux user
280              user_t can execute without transitioning:
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282              sesearch -A -s user_t -c file -p execute_no_trans
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286       3. SELinux can allow user_t to execute the program and transition to  a
287       new type.
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289              Execute  the  following  to  see the types that the SELinux user
290              user_t can execute and transition:
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292              $ sesearch -A -s user_t -c process -p transition
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MANAGED FILES

297       The SELinux process type user_t can manage files labeled with the  fol‐
298       lowing  file  types.   The paths listed are the default paths for these
299       file types.  Note the processes UID still need to have DAC permissions.
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301       alsa_home_t
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303            /home/[^/]+/.asoundrc
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305       anon_inodefs_t
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308       auth_cache_t
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310            /var/cache/coolkey(/.*)?
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312       cgroup_t
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314            /sys/fs/cgroup
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316       chrome_sandbox_tmpfs_t
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319       faillog_t
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321            /var/log/btmp.*
322            /var/log/faillog.*
323            /var/log/tallylog.*
324            /var/run/faillock(/.*)?
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326       games_data_t
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328            /var/games(/.*)?
329            /var/lib/games(/.*)?
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331       httpd_user_content_t
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333            /home/[^/]+/((www)|(web)|(public_html))(/.+)?
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335       httpd_user_htaccess_t
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337            /home/[^/]+/((www)|(web)|(public_html))(/.*)?/.htaccess
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339       httpd_user_ra_content_t
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341            /home/[^/]+/((www)|(web)|(public_html))(/.*)?/logs(/.*)?
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343       httpd_user_rw_content_t
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346       httpd_user_script_exec_t
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348            /home/[^/]+/((www)|(web)|(public_html))/cgi-bin(/.+)?
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350       mail_spool_t
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352            /var/mail(/.*)?
353            /var/spool/imap(/.*)?
354            /var/spool/mail(/.*)?
355            /var/spool/smtpd(/.*)?
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357       mqueue_spool_t
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359            /var/spool/(client)?mqueue(/.*)?
360            /var/spool/mqueue.in(/.*)?
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362       pulseaudio_tmpfsfile
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365       sandbox_tmpfs_type
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367            all sandbox content in tmpfs file systems
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369       security_t
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371            /selinux
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373       systemd_passwd_var_run_t
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375            /var/run/systemd/ask-password(/.*)?
376            /var/run/systemd/ask-password-block(/.*)?
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378       usbfs_t
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380
381       user_fonts_cache_t
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383            /root/.fontconfig(/.*)?
384            /root/.fonts/auto(/.*)?
385            /root/.fonts.cache-.*
386            /root/.cache/fontconfig(/.*)?
387            /home/[^/]+/.fontconfig(/.*)?
388            /home/[^/]+/.fonts/auto(/.*)?
389            /home/[^/]+/.fonts.cache-.*
390            /home/[^/]+/.cache/fontconfig(/.*)?
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392       var_auth_t
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394            /var/ace(/.*)?
395            /var/rsa(/.*)?
396            /var/lib/abl(/.*)?
397            /var/lib/rsa(/.*)?
398            /var/lib/pam_ssh(/.*)?
399            /var/lib/pam_shield(/.*)?
400            /var/opt/quest/vas/vasd(/.*)?
401            /var/lib/google-authenticator(/.*)?
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403       virt_image_type
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405            all virtual image files
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COMMANDS

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

426       This manual page was auto-generated using sepolicy manpage .
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SEE ALSO

430       selinux(8), user(8), semanage(8), restorecon(8), chcon(1), sepolicy(8),
431       setsebool(8),       user_dbusd_selinux(8),       user_dbusd_selinux(8),
432       user_gkeyringd_selinux(8),                   user_gkeyringd_selinux(8),
433       user_mail_selinux(8),   user_mail_selinux(8),   user_screen_selinux(8),
434       user_screen_selinux(8),      user_seunshare_selinux(8),      user_seun‐
435       share_selinux(8), user_ssh_agent_selinux(8), user_ssh_agent_selinux(8),
436       user_wine_selinux(8), user_wine_selinux(8)
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440mgrepl@redhat.com                    user                      user_selinux(8)
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