1vlock_selinux(8) SELinux Policy vlock vlock_selinux(8)
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6 vlock_selinux - Security Enhanced Linux Policy for the vlock processes
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9 Security-Enhanced Linux secures the vlock processes via flexible manda‐
10 tory access control.
11 The vlock processes execute with the vlock_t SELinux type. You can
13 check if you have these processes running by executing the ps command
14 with the -Z qualifier.
15 For example:
17 ps -eZ | grep vlock_t
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23 The vlock_t SELinux type can be entered via the vlock_exec_t file type.
24 The default entrypoint paths for the vlock_t domain are the following:
26 /usr/bin/vlock, /usr/sbin/vlock-main
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30 SELinux defines process types (domains) for each process running on the
31 system
32 You can see the context of a process using the -Z option to ps
34 Policy governs the access confined processes have to files. SELinux
36 vlock policy is very flexible allowing users to setup their vlock pro‐
37 cesses in as secure a method as possible.
38 The following process types are defined for vlock:
40 vlock_t
42 Note: semanage permissive -a vlock_t can be used to make the process
44 type vlock_t permissive. SELinux does not deny access to permissive
45 process types, but the AVC (SELinux denials) messages are still gener‐
46 ated.
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50 SELinux policy is customizable based on least access required. vlock
51 policy is extremely flexible and has several booleans that allow you to
52 manipulate the policy and run vlock with the tightest access possible.
53 If you want to allow users to resolve user passwd entries directly from
57 ldap rather then using a sssd server, you must turn on the authlo‐
58 gin_nsswitch_use_ldap boolean. Disabled by default.
59 setsebool -P authlogin_nsswitch_use_ldap 1
61 If you want to deny any process from ptracing or debugging any other
65 processes, you must turn on the deny_ptrace boolean. Enabled by
66 default.
67 setsebool -P deny_ptrace 1
69 If you want to allow any process to mmap any file on system with
73 attribute file_type, you must turn on the domain_can_mmap_files bool‐
74 ean. Enabled by default.
75 setsebool -P domain_can_mmap_files 1
77 If you want to allow all domains write to kmsg_device, while kernel is
81 executed with systemd.log_target=kmsg parameter, you must turn on the
82 domain_can_write_kmsg boolean. Disabled by default.
83 setsebool -P domain_can_write_kmsg 1
85 If you want to allow all domains to use other domains file descriptors,
89 you must turn on the domain_fd_use boolean. Enabled by default.
90 setsebool -P domain_fd_use 1
92 If you want to allow all domains to have the kernel load modules, you
96 must turn on the domain_kernel_load_modules boolean. Disabled by
97 default.
98 setsebool -P domain_kernel_load_modules 1
100 If you want to allow all domains to execute in fips_mode, you must turn
104 on the fips_mode boolean. Enabled by default.
105 setsebool -P fips_mode 1
107 If you want to enable reading of urandom for all domains, you must turn
111 on the global_ssp boolean. Disabled by default.
112 setsebool -P global_ssp 1
114 If you want to allow confined applications to run with kerberos, you
118 must turn on the kerberos_enabled boolean. Enabled by default.
119 setsebool -P kerberos_enabled 1
121 If you want to allow system to run with NIS, you must turn on the
125 nis_enabled boolean. Disabled by default.
126 setsebool -P nis_enabled 1
128 If you want to allow confined applications to use nscd shared memory,
132 you must turn on the nscd_use_shm boolean. Disabled by default.
133 setsebool -P nscd_use_shm 1
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139 The SELinux process type vlock_t can manage files labeled with the fol‐
140 lowing file types. The paths listed are the default paths for these
141 file types. Note the processes UID still need to have DAC permissions.
142 faillog_t
144 /var/log/btmp.*
146 /var/log/faillog.*
147 /var/log/tallylog.*
148 /var/run/faillock(/.*)?
149 krb5_host_rcache_t
151 /var/cache/krb5rcache(/.*)?
153 /var/tmp/nfs_0
154 /var/tmp/DNS_25
155 /var/tmp/host_0
156 /var/tmp/imap_0
157 /var/tmp/HTTP_23
158 /var/tmp/HTTP_48
159 /var/tmp/ldap_55
160 /var/tmp/ldap_487
161 /var/tmp/ldapmap1_0
162 lastlog_t
164 /var/log/lastlog.*
166 security_t
168 /selinux
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173 SELinux requires files to have an extended attribute to define the file
174 type.
175 You can see the context of a file using the -Z option to ls
177 Policy governs the access confined processes have to these files.
179 SELinux vlock policy is very flexible allowing users to setup their
180 vlock processes in as secure a method as possible.
181 The following file types are defined for vlock:
183 vlock_exec_t
187 - Set files with the vlock_exec_t type, if you want to transition an
189 executable to the vlock_t domain.
190 Paths:
193 /usr/bin/vlock, /usr/sbin/vlock-main
194 Note: File context can be temporarily modified with the chcon command.
197 If you want to permanently change the file context you need to use the
198 semanage fcontext command. This will modify the SELinux labeling data‐
199 base. You will need to use restorecon to apply the labels.
200
203 semanage fcontext can also be used to manipulate default file context
204 mappings.
205 semanage permissive can also be used to manipulate whether or not a
207 process type is permissive.
208 semanage module can also be used to enable/disable/install/remove pol‐
210 icy modules.
211 semanage boolean can also be used to manipulate the booleans
213 system-config-selinux is a GUI tool available to customize SELinux pol‐
216 icy settings.
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220 This manual page was auto-generated using sepolicy manpage .
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224 selinux(8), vlock(8), semanage(8), restorecon(8), chcon(1), sepolicy(8)
225 , setsebool(8)
226vlock 19-04-25 vlock_selinux(8)