1utempter_selinux(8) SELinux Policy utempter utempter_selinux(8)
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6 utempter_selinux - Security Enhanced Linux Policy for the utempter pro‐
7 cesses
8
10 Security-Enhanced Linux secures the utempter processes via flexible
11 mandatory access control.
12 The utempter processes execute with the utempter_t SELinux type. You
14 can check if you have these processes running by executing the ps com‐
15 mand with the -Z qualifier.
16 For example:
18 ps -eZ | grep utempter_t
20
24 The utempter_t SELinux type can be entered via the utempter_exec_t file
25 type.
26 The default entrypoint paths for the utempter_t domain are the follow‐
28 ing:
29 /usr/sbin/utempter
31
33 SELinux defines process types (domains) for each process running on the
34 system
35 You can see the context of a process using the -Z option to ps
37 Policy governs the access confined processes have to files. SELinux
39 utempter policy is very flexible allowing users to setup their utempter
40 processes in as secure a method as possible.
41 The following process types are defined for utempter:
43 utempter_t
45 Note: semanage permissive -a utempter_t can be used to make the process
47 type utempter_t permissive. SELinux does not deny access to permissive
48 process types, but the AVC (SELinux denials) messages are still gener‐
49 ated.
50
53 SELinux policy is customizable based on least access required.
54 utempter policy is extremely flexible and has several booleans that
55 allow you to manipulate the policy and run utempter with the tightest
56 access possible.
57 If you want to allow users to resolve user passwd entries directly from
61 ldap rather then using a sssd server, you must turn on the authlo‐
62 gin_nsswitch_use_ldap boolean. Disabled by default.
63 setsebool -P authlogin_nsswitch_use_ldap 1
65 If you want to deny any process from ptracing or debugging any other
69 processes, you must turn on the deny_ptrace boolean. Enabled by
70 default.
71 setsebool -P deny_ptrace 1
73 If you want to allow any process to mmap any file on system with
77 attribute file_type, you must turn on the domain_can_mmap_files bool‐
78 ean. Enabled by default.
79 setsebool -P domain_can_mmap_files 1
81 If you want to allow all domains write to kmsg_device, while kernel is
85 executed with systemd.log_target=kmsg parameter, you must turn on the
86 domain_can_write_kmsg boolean. Disabled by default.
87 setsebool -P domain_can_write_kmsg 1
89 If you want to allow all domains to use other domains file descriptors,
93 you must turn on the domain_fd_use boolean. Enabled by default.
94 setsebool -P domain_fd_use 1
96 If you want to allow all domains to have the kernel load modules, you
100 must turn on the domain_kernel_load_modules boolean. Disabled by
101 default.
102 setsebool -P domain_kernel_load_modules 1
104 If you want to allow all domains to execute in fips_mode, you must turn
108 on the fips_mode boolean. Enabled by default.
109 setsebool -P fips_mode 1
111 If you want to enable reading of urandom for all domains, you must turn
115 on the global_ssp boolean. Disabled by default.
116 setsebool -P global_ssp 1
118 If you want to allow confined applications to run with kerberos, you
122 must turn on the kerberos_enabled boolean. Enabled by default.
123 setsebool -P kerberos_enabled 1
125 If you want to allow system to run with NIS, you must turn on the
129 nis_enabled boolean. Disabled by default.
130 setsebool -P nis_enabled 1
132 If you want to allow confined applications to use nscd shared memory,
136 you must turn on the nscd_use_shm boolean. Disabled by default.
137 setsebool -P nscd_use_shm 1
139
143 The SELinux process type utempter_t can manage files labeled with the
144 following file types. The paths listed are the default paths for these
145 file types. Note the processes UID still need to have DAC permissions.
146 initrc_var_run_t
148 /var/run/utmp
150 /var/run/random-seed
151 /var/run/runlevel.dir
152 /var/run/setmixer_flag
153 user_tmp_t
155 /dev/shm/mono.*
157 /var/run/user(/.*)?
158 /tmp/.X11-unix(/.*)?
159 /tmp/.ICE-unix(/.*)?
160 /dev/shm/pulse-shm.*
161 /tmp/.X0-lock
162 /tmp/hsperfdata_root
163 /var/tmp/hsperfdata_root
164 /home/[^/]+/tmp
165 /home/[^/]+/.tmp
166 /tmp/gconfd-[^/]+
167 wtmp_t
169 /var/log/wtmp.*
171
174 SELinux requires files to have an extended attribute to define the file
175 type.
176 You can see the context of a file using the -Z option to ls
178 Policy governs the access confined processes have to these files.
180 SELinux utempter policy is very flexible allowing users to setup their
181 utempter processes in as secure a method as possible.
182 The following file types are defined for utempter:
184 utempter_exec_t
188 - Set files with the utempter_exec_t type, if you want to transition an
190 executable to the utempter_t domain.
191 Note: File context can be temporarily modified with the chcon command.
195 If you want to permanently change the file context you need to use the
196 semanage fcontext command. This will modify the SELinux labeling data‐
197 base. You will need to use restorecon to apply the labels.
198
201 semanage fcontext can also be used to manipulate default file context
202 mappings.
203 semanage permissive can also be used to manipulate whether or not a
205 process type is permissive.
206 semanage module can also be used to enable/disable/install/remove pol‐
208 icy modules.
209 semanage boolean can also be used to manipulate the booleans
211 system-config-selinux is a GUI tool available to customize SELinux pol‐
214 icy settings.
215
218 This manual page was auto-generated using sepolicy manpage .
219
222 selinux(8), utempter(8), semanage(8), restorecon(8), chcon(1), sepol‐
223 icy(8) , setsebool(8)
224utempter 19-04-25 utempter_selinux(8)