1user_screen_selinux(8) SELinux Policy user_screen user_screen_selinux(8)
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6 user_screen_selinux - Security Enhanced Linux Policy for the
7 user_screen processes
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10 Security-Enhanced Linux secures the user_screen processes via flexible
11 mandatory access control.
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13 The user_screen processes execute with the user_screen_t SELinux type.
14 You can check if you have these processes running by executing the ps
15 command with the -Z qualifier.
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17 For example:
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19 ps -eZ | grep user_screen_t
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24 The user_screen_t SELinux type can be entered via the screen_exec_t
25 file type.
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27 The default entrypoint paths for the user_screen_t domain are the fol‐
28 lowing:
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30 /usr/bin/screen
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33 SELinux defines process types (domains) for each process running on the
34 system
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36 You can see the context of a process using the -Z option to ps
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38 Policy governs the access confined processes have to files. SELinux
39 user_screen policy is very flexible allowing users to setup their
40 user_screen processes in as secure a method as possible.
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42 The following process types are defined for user_screen:
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44 user_screen_t
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46 Note: semanage permissive -a user_screen_t can be used to make the
47 process type user_screen_t permissive. SELinux does not deny access to
48 permissive process types, but the AVC (SELinux denials) messages are
49 still generated.
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53 SELinux policy is customizable based on least access required.
54 user_screen policy is extremely flexible and has several booleans that
55 allow you to manipulate the policy and run user_screen with the tight‐
56 est access possible.
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60 If you want to allow all domains to use other domains file descriptors,
61 you must turn on the allow_domain_fd_use boolean. Enabled by default.
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63 setsebool -P allow_domain_fd_use 1
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67 If you want to allow confined applications to run with kerberos, you
68 must turn on the allow_kerberos boolean. Enabled by default.
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70 setsebool -P allow_kerberos 1
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74 If you want to allow sysadm to debug or ptrace all processes, you must
75 turn on the allow_ptrace boolean. Disabled by default.
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77 setsebool -P allow_ptrace 1
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81 If you want to allow system to run with NIS, you must turn on the
82 allow_ypbind boolean. Disabled by default.
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84 setsebool -P allow_ypbind 1
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88 If you want to allow all domains to have the kernel load modules, you
89 must turn on the domain_kernel_load_modules boolean. Disabled by
90 default.
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92 setsebool -P domain_kernel_load_modules 1
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96 If you want to allow all domains to execute in fips_mode, you must turn
97 on the fips_mode boolean. Enabled by default.
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99 setsebool -P fips_mode 1
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103 If you want to enable reading of urandom for all domains, you must turn
104 on the global_ssp boolean. Disabled by default.
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106 setsebool -P global_ssp 1
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110 If you want to allow confined applications to use nscd shared memory,
111 you must turn on the nscd_use_shm boolean. Enabled by default.
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113 setsebool -P nscd_use_shm 1
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117 If you want to support NFS home directories, you must turn on the
118 use_nfs_home_dirs boolean. Disabled by default.
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120 setsebool -P use_nfs_home_dirs 1
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124 If you want to support SAMBA home directories, you must turn on the
125 use_samba_home_dirs boolean. Disabled by default.
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127 setsebool -P use_samba_home_dirs 1
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132 The SELinux process type user_screen_t can manage files labeled with
133 the following file types. The paths listed are the default paths for
134 these file types. Note the processes UID still need to have DAC per‐
135 missions.
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137 faillog_t
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139 /var/log/btmp.*
140 /var/log/faillog.*
141 /var/log/tallylog.*
142 /var/run/faillock(/.*)?
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144 initrc_tmp_t
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147 initrc_var_run_t
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149 /var/run/utmp
150 /var/run/random-seed
151 /var/run/runlevel.dir
152 /var/run/setmixer_flag
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154 mnt_t
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156 /mnt(/[^/]*)
157 /mnt(/[^/]*)?
158 /rhev(/[^/]*)?
159 /media(/[^/]*)
160 /media(/[^/]*)?
161 /etc/rhgb(/.*)?
162 /media/.hal-.*
163 /net
164 /afs
165 /rhev
166 /misc
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168 pcscd_var_run_t
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170 /var/run/pcscd.events(/.*)?
171 /var/run/pcscd.pid
172 /var/run/pcscd.pub
173 /var/run/pcscd.comm
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175 screen_tmp_t
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178 tmp_t
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180 /tmp
181 /usr/tmp
182 /var/tmp
183 /tmp-inst
184 /var/tmp-inst
185 /var/tmp/vi.recover
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189 semanage fcontext can also be used to manipulate default file context
190 mappings.
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192 semanage permissive can also be used to manipulate whether or not a
193 process type is permissive.
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195 semanage module can also be used to enable/disable/install/remove pol‐
196 icy modules.
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198 semanage boolean can also be used to manipulate the booleans
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201 system-config-selinux is a GUI tool available to customize SELinux pol‐
202 icy settings.
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206 This manual page was auto-generated using sepolicy manpage .
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210 selinux(8), user_screen(8), semanage(8), restorecon(8), chcon(1) , set‐
211 sebool(8)
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215user_screen 15-06-03 user_screen_selinux(8)