uux_selinux(8)

1uux_selinux(8)                SELinux Policy uux                uux_selinux(8)
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NAME

6       uux_selinux - Security Enhanced Linux Policy for the uux processes
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DESCRIPTION

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

23       The uux_t SELinux type can be entered via the uux_exec_t file type.
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25       The default entrypoint paths for the uux_t domain are the following:
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27       /usr/bin/uux
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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       uux policy is very flexible allowing users to setup their uux processes
37       in as secure a method as possible.
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39       The following process types are defined for uux:
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41       uux_t
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43       Note: semanage permissive -a uux_t can be used to make the process type
44       uux_t permissive. SELinux does not deny access  to  permissive  process
45       types, but the AVC (SELinux denials) messages are still generated.
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BOOLEANS

49       SELinux  policy  is  customizable  based on least access required.  uux
50       policy is extremely flexible and has several booleans that allow you to
51       manipulate the policy and run uux with the tightest access possible.
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55       If you want to allow users to resolve user passwd entries directly from
56       ldap rather then using a sssd server, you  must  turn  on  the  authlo‐
57       gin_nsswitch_use_ldap boolean. Disabled by default.
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59       setsebool -P authlogin_nsswitch_use_ldap 1
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63       If  you  want  to deny any process from ptracing or debugging any other
64       processes, you  must  turn  on  the  deny_ptrace  boolean.  Enabled  by
65       default.
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67       setsebool -P deny_ptrace 1
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71       If  you  want  to  allow  any  process  to mmap any file on system with
72       attribute file_type, you must turn on the  domain_can_mmap_files  bool‐
73       ean. Enabled by default.
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75       setsebool -P domain_can_mmap_files 1
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79       If  you want to allow all domains write to kmsg_device, while kernel is
80       executed with systemd.log_target=kmsg parameter, you must turn  on  the
81       domain_can_write_kmsg boolean. Disabled by default.
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83       setsebool -P domain_can_write_kmsg 1
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87       If you want to allow all domains to use other domains file descriptors,
88       you must turn on the domain_fd_use boolean. Enabled by default.
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90       setsebool -P domain_fd_use 1
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94       If you want to allow all domains to have the kernel load  modules,  you
95       must  turn  on  the  domain_kernel_load_modules  boolean.  Disabled  by
96       default.
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98       setsebool -P domain_kernel_load_modules 1
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102       If you want to allow all domains to execute in fips_mode, you must turn
103       on the fips_mode boolean. Enabled by default.
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105       setsebool -P fips_mode 1
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109       If you want to enable reading of urandom for all domains, you must turn
110       on the global_ssp boolean. Disabled by default.
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112       setsebool -P global_ssp 1
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116       If you want to allow confined applications to run  with  kerberos,  you
117       must turn on the kerberos_enabled boolean. Enabled by default.
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119       setsebool -P kerberos_enabled 1
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123       If  you  want  to  allow  system  to run with NIS, you must turn on the
124       nis_enabled boolean. Disabled by default.
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126       setsebool -P nis_enabled 1
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130       If you want to allow confined applications to use nscd  shared  memory,
131       you must turn on the nscd_use_shm boolean. Disabled by default.
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133       setsebool -P nscd_use_shm 1
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MANAGED FILES

138       The  SELinux  process type uux_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       anon_inodefs_t
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145       uucpd_spool_t
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147            /var/spool/uucp(/.*)?
148            /var/spool/uucppublic(/.*)?
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FILE CONTEXTS

152       SELinux requires files to have an extended attribute to define the file
153       type.
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155       You can see the context of a file using the -Z option to ls
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157       Policy governs the access  confined  processes  have  to  these  files.
158       SELinux  uux  policy is very flexible allowing users to setup their uux
159       processes in as secure a method as possible.
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161       The following file types are defined for uux:
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165       uux_exec_t
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167       - Set files with the uux_exec_t type, if you want to transition an exe‐
168       cutable to the uux_t domain.
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172       Note:  File context can be temporarily modified with the chcon command.
173       If you want to permanently change the file context you need to use  the
174       semanage fcontext command.  This will modify the SELinux labeling data‐
175       base.  You will need to use restorecon to apply the labels.
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COMMANDS

179       semanage fcontext can also be used to manipulate default  file  context
180       mappings.
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182       semanage  permissive  can  also  be used to manipulate whether or not a
183       process type is permissive.
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185       semanage module can also be used to enable/disable/install/remove  pol‐
186       icy modules.
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188       semanage boolean can also be used to manipulate the booleans
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191       system-config-selinux is a GUI tool available to customize SELinux pol‐
192       icy settings.
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AUTHOR

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