1mcelog_selinux(8) SELinux Policy mcelog mcelog_selinux(8)
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6 mcelog_selinux - Security Enhanced Linux Policy for the mcelog pro‐
7 cesses
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10 Security-Enhanced Linux secures the mcelog processes via flexible
11 mandatory access control.
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13 The mcelog processes execute with the mcelog_t SELinux type. You can
14 check if you have these processes running by executing the ps command
15 with the -Z qualifier.
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17 For example:
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19 ps -eZ | grep mcelog_t
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24 The mcelog_t SELinux type can be entered via the mcelog_exec_t file
25 type.
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27 The default entrypoint paths for the mcelog_t domain are the following:
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29 /usr/sbin/mcelog
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32 SELinux defines process types (domains) for each process running on the
33 system
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35 You can see the context of a process using the -Z option to ps
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37 Policy governs the access confined processes have to files. SELinux
38 mcelog policy is very flexible allowing users to setup their mcelog
39 processes in as secure a method as possible.
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41 The following process types are defined for mcelog:
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43 mcelog_t
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45 Note: semanage permissive -a mcelog_t can be used to make the process
46 type mcelog_t permissive. SELinux does not deny access to permissive
47 process types, but the AVC (SELinux denials) messages are still gener‐
48 ated.
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52 SELinux policy is customizable based on least access required. mcelog
53 policy is extremely flexible and has several booleans that allow you to
54 manipulate the policy and run mcelog with the tightest access possible.
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58 If you want to determine whether mcelog supports client mode, you must
59 turn on the mcelog_client boolean. Disabled by default.
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61 setsebool -P mcelog_client 1
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65 If you want to determine whether mcelog can execute scripts, you must
66 turn on the mcelog_exec_scripts boolean. Enabled by default.
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68 setsebool -P mcelog_exec_scripts 1
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72 If you want to determine whether mcelog can use all the user ttys, you
73 must turn on the mcelog_foreground boolean. Disabled by default.
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75 setsebool -P mcelog_foreground 1
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79 If you want to determine whether mcelog supports server mode, you must
80 turn on the mcelog_server boolean. Disabled by default.
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82 setsebool -P mcelog_server 1
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86 If you want to allow users to resolve user passwd entries directly from
87 ldap rather then using a sssd server, you must turn on the authlo‐
88 gin_nsswitch_use_ldap boolean. Disabled by default.
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90 setsebool -P authlogin_nsswitch_use_ldap 1
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94 If you want to allow all daemons to write corefiles to /, you must turn
95 on the daemons_dump_core boolean. Disabled by default.
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97 setsebool -P daemons_dump_core 1
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101 If you want to enable cluster mode for daemons, you must turn on the
102 daemons_enable_cluster_mode boolean. Enabled by default.
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104 setsebool -P daemons_enable_cluster_mode 1
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108 If you want to allow all daemons to use tcp wrappers, you must turn on
109 the daemons_use_tcp_wrapper boolean. Disabled by default.
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111 setsebool -P daemons_use_tcp_wrapper 1
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115 If you want to allow all daemons the ability to read/write terminals,
116 you must turn on the daemons_use_tty boolean. Disabled by default.
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118 setsebool -P daemons_use_tty 1
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122 If you want to deny any process from ptracing or debugging any other
123 processes, you must turn on the deny_ptrace boolean. Enabled by
124 default.
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126 setsebool -P deny_ptrace 1
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130 If you want to allow any process to mmap any file on system with
131 attribute file_type, you must turn on the domain_can_mmap_files bool‐
132 ean. Enabled by default.
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134 setsebool -P domain_can_mmap_files 1
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138 If you want to allow all domains write to kmsg_device, while kernel is
139 executed with systemd.log_target=kmsg parameter, you must turn on the
140 domain_can_write_kmsg boolean. Disabled by default.
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142 setsebool -P domain_can_write_kmsg 1
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146 If you want to allow all domains to use other domains file descriptors,
147 you must turn on the domain_fd_use boolean. Enabled by default.
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149 setsebool -P domain_fd_use 1
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153 If you want to allow all domains to have the kernel load modules, you
154 must turn on the domain_kernel_load_modules boolean. Disabled by
155 default.
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157 setsebool -P domain_kernel_load_modules 1
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161 If you want to allow all domains to execute in fips_mode, you must turn
162 on the fips_mode boolean. Enabled by default.
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164 setsebool -P fips_mode 1
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168 If you want to enable reading of urandom for all domains, you must turn
169 on the global_ssp boolean. Disabled by default.
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171 setsebool -P global_ssp 1
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175 If you want to allow confined applications to run with kerberos, you
176 must turn on the kerberos_enabled boolean. Enabled by default.
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178 setsebool -P kerberos_enabled 1
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182 If you want to allow system to run with NIS, you must turn on the
183 nis_enabled boolean. Disabled by default.
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185 setsebool -P nis_enabled 1
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189 If you want to allow confined applications to use nscd shared memory,
190 you must turn on the nscd_use_shm boolean. Disabled by default.
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192 setsebool -P nscd_use_shm 1
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197 The SELinux process type mcelog_t can manage files labeled with the
198 following file types. The paths listed are the default paths for these
199 file types. Note the processes UID still need to have DAC permissions.
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201 cluster_conf_t
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203 /etc/cluster(/.*)?
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205 cluster_var_lib_t
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207 /var/lib/pcsd(/.*)?
208 /var/lib/cluster(/.*)?
209 /var/lib/openais(/.*)?
210 /var/lib/pengine(/.*)?
211 /var/lib/corosync(/.*)?
212 /usr/lib/heartbeat(/.*)?
213 /var/lib/heartbeat(/.*)?
214 /var/lib/pacemaker(/.*)?
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216 cluster_var_run_t
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218 /var/run/crm(/.*)?
219 /var/run/cman_.*
220 /var/run/rsctmp(/.*)?
221 /var/run/aisexec.*
222 /var/run/heartbeat(/.*)?
223 /var/run/corosync-qnetd(/.*)?
224 /var/run/corosync-qdevice(/.*)?
225 /var/run/cpglockd.pid
226 /var/run/corosync.pid
227 /var/run/rgmanager.pid
228 /var/run/cluster/rgmanager.sk
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230 mcelog_var_run_t
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232 /var/run/mcelog.*
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234 root_t
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236 /sysroot/ostree/deploy/.*-atomic.*/deploy(/.*)?
237 /
238 /initrd
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240 sysfs_t
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242 /sys(/.*)?
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246 SELinux requires files to have an extended attribute to define the file
247 type.
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249 You can see the context of a file using the -Z option to ls
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251 Policy governs the access confined processes have to these files.
252 SELinux mcelog policy is very flexible allowing users to setup their
253 mcelog processes in as secure a method as possible.
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255 STANDARD FILE CONTEXT
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257 SELinux defines the file context types for the mcelog, if you wanted to
258 store files with these types in a diffent paths, you need to execute
259 the semanage command to sepecify alternate labeling and then use
260 restorecon to put the labels on disk.
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262 semanage fcontext -a -t mcelog_var_run_t '/srv/mymcelog_content(/.*)?'
263 restorecon -R -v /srv/mymcelog_content
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265 Note: SELinux often uses regular expressions to specify labels that
266 match multiple files.
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268 The following file types are defined for mcelog:
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272 mcelog_etc_t
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274 - Set files with the mcelog_etc_t type, if you want to store mcelog
275 files in the /etc directories.
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279 mcelog_exec_t
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281 - Set files with the mcelog_exec_t type, if you want to transition an
282 executable to the mcelog_t domain.
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286 mcelog_initrc_exec_t
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288 - Set files with the mcelog_initrc_exec_t type, if you want to transi‐
289 tion an executable to the mcelog_initrc_t domain.
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293 mcelog_log_t
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295 - Set files with the mcelog_log_t type, if you want to treat the data
296 as mcelog log data, usually stored under the /var/log directory.
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300 mcelog_var_run_t
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302 - Set files with the mcelog_var_run_t type, if you want to store the
303 mcelog files under the /run or /var/run directory.
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307 Note: File context can be temporarily modified with the chcon command.
308 If you want to permanently change the file context you need to use the
309 semanage fcontext command. This will modify the SELinux labeling data‐
310 base. You will need to use restorecon to apply the labels.
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314 semanage fcontext can also be used to manipulate default file context
315 mappings.
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317 semanage permissive can also be used to manipulate whether or not a
318 process type is permissive.
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320 semanage module can also be used to enable/disable/install/remove pol‐
321 icy modules.
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323 semanage boolean can also be used to manipulate the booleans
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326 system-config-selinux is a GUI tool available to customize SELinux pol‐
327 icy settings.
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331 This manual page was auto-generated using sepolicy manpage .
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335 selinux(8), mcelog(8), semanage(8), restorecon(8), chcon(1), sepol‐
336 icy(8) , setsebool(8)
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340mcelog 19-04-25 mcelog_selinux(8)