1uml_selinux(8) SELinux Policy uml uml_selinux(8)
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6 uml_selinux - Security Enhanced Linux Policy for the uml processes
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9 Security-Enhanced Linux secures the uml processes via flexible manda‐
10 tory access control.
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12 The uml processes execute with the uml_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 uml_t
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23 The uml_t SELinux type can be entered via the uml_exec_t file type.
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25 The default entrypoint paths for the uml_t domain are the following:
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30 SELinux defines process types (domains) for each process running on the
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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 uml policy is very flexible allowing users to setup their uml processes
37 in as secure a method as possible.
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39 The following process types are defined for uml:
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41 uml_t, uml_switch_t
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43 Note: semanage permissive -a uml_t can be used to make the process type
44 uml_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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49 SELinux policy is customizable based on least access required. uml
50 policy is extremely flexible and has several booleans that allow you to
51 manipulate the policy and run uml 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 allow all domains to execute in fips_mode, you must turn
64 on the fips_mode boolean. Enabled by default.
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66 setsebool -P fips_mode 1
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70 If you want to allow confined applications to run with kerberos, you
71 must turn on the kerberos_enabled boolean. Enabled by default.
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73 setsebool -P kerberos_enabled 1
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77 If you want to allow system to run with NIS, you must turn on the
78 nis_enabled boolean. Disabled by default.
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80 setsebool -P nis_enabled 1
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84 If you want to allow confined applications to use nscd shared memory,
85 you must turn on the nscd_use_shm boolean. Disabled by default.
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87 setsebool -P nscd_use_shm 1
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91 If you want to support NFS home directories, you must turn on the
92 use_nfs_home_dirs boolean. Disabled by default.
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94 setsebool -P use_nfs_home_dirs 1
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98 If you want to support SAMBA home directories, you must turn on the
99 use_samba_home_dirs boolean. Disabled by default.
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101 setsebool -P use_samba_home_dirs 1
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106 The SELinux process type uml_t can manage files labeled with the fol‐
107 lowing file types. The paths listed are the default paths for these
108 file types. Note the processes UID still need to have DAC permissions.
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110 cifs_t
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113 nfs_t
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116 uml_rw_t
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118 /home/[^/]+/.uml(/.*)?
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120 uml_tmp_t
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123 uml_tmpfs_t
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128 SELinux requires files to have an extended attribute to define the file
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131 You can see the context of a file using the -Z option to ls
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133 Policy governs the access confined processes have to these files.
134 SELinux uml policy is very flexible allowing users to setup their uml
135 processes in as secure a method as possible.
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137 STANDARD FILE CONTEXT
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139 SELinux defines the file context types for the uml, if you wanted to
140 store files with these types in a diffent paths, you need to execute
141 the semanage command to sepecify alternate labeling and then use
142 restorecon to put the labels on disk.
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144 semanage fcontext -a -t uml_switch_var_run_t '/srv/myuml_content(/.*)?'
145 restorecon -R -v /srv/myuml_content
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147 Note: SELinux often uses regular expressions to specify labels that
148 match multiple files.
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150 The following file types are defined for uml:
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154 uml_exec_t
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156 - Set files with the uml_exec_t type, if you want to transition an exe‐
157 cutable to the uml_t domain.
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161 uml_ro_t
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163 - Set files with the uml_ro_t type, if you want to treat the files as
164 uml read/only content.
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168 uml_rw_t
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170 - Set files with the uml_rw_t type, if you want to treat the files as
171 uml read/write content.
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175 uml_switch_exec_t
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177 - Set files with the uml_switch_exec_t type, if you want to transition
178 an executable to the uml_switch_t domain.
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182 uml_switch_var_run_t
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184 - Set files with the uml_switch_var_run_t type, if you want to store
185 the uml switch files under the /run or /var/run directory.
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189 uml_tmp_t
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191 - Set files with the uml_tmp_t type, if you want to store uml temporary
192 files in the /tmp directories.
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196 uml_tmpfs_t
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198 - Set files with the uml_tmpfs_t type, if you want to store uml files
199 on a tmpfs file system.
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203 Note: File context can be temporarily modified with the chcon command.
204 If you want to permanently change the file context you need to use the
205 semanage fcontext command. This will modify the SELinux labeling data‐
206 base. You will need to use restorecon to apply the labels.
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210 semanage fcontext can also be used to manipulate default file context
211 mappings.
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213 semanage permissive can also be used to manipulate whether or not a
214 process type is permissive.
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216 semanage module can also be used to enable/disable/install/remove pol‐
217 icy modules.
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219 semanage boolean can also be used to manipulate the booleans
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222 system-config-selinux is a GUI tool available to customize SELinux pol‐
223 icy settings.
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227 This manual page was auto-generated using sepolicy manpage .
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231 selinux(8), uml(8), semanage(8), restorecon(8), chcon(1), sepolicy(8),
232 setsebool(8), uml_switch_selinux(8), uml_switch_selinux(8)
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236uml 19-06-18 uml_selinux(8)