1systemd_coredump_selinux(S8E)Linux Policy systemd_coredsuymsptemd_coredump_selinux(8)
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NAME

6       systemd_coredump_selinux  - Security Enhanced Linux Policy for the sys‐
7       temd_coredump processes
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DESCRIPTION

10       Security-Enhanced Linux  secures  the  systemd_coredump  processes  via
11       flexible mandatory access control.
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13       The  systemd_coredump  processes  execute  with  the systemd_coredump_t
14       SELinux type. You can check if you have these processes running by exe‐
15       cuting the ps command with the -Z qualifier.
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17       For example:
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19       ps -eZ | grep systemd_coredump_t
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ENTRYPOINTS

24       The  systemd_coredump_t  SELinux  type  can  be  entered  via  the sys‐
25       temd_coredump_exec_t file type.
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27       The default entrypoint paths for the systemd_coredump_t domain are  the
28       following:
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30       /bin/systemd-coredump, /usr/lib/systemd/systemd-coredump
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PROCESS TYPES

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       systemd_coredump  policy is very flexible allowing users to setup their
40       systemd_coredump processes in as secure a method as possible.
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42       The following process types are defined for systemd_coredump:
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44       systemd_coredump_t
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46       Note: semanage permissive -a systemd_coredump_t can be used to make the
47       process  type  systemd_coredump_t  permissive.  SELinux  does  not deny
48       access to permissive process types, but the AVC (SELinux denials)  mes‐
49       sages are still generated.
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BOOLEANS

53       SELinux  policy  is  customizable based on least access required.  sys‐
54       temd_coredump policy is extremely flexible  and  has  several  booleans
55       that  allow  you to manipulate the policy and run systemd_coredump with
56       the tightest access possible.
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60       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.
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64       setsebool -P authlogin_nsswitch_use_ldap 1
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68       If you want to deny user domains applications to map a memory region as
69       both  executable  and  writable,  this  is dangerous and the executable
70       should be reported in bugzilla, you must turn on the deny_execmem bool‐
71       ean. Enabled by default.
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73       setsebool -P deny_execmem 1
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77       If you want to allow all domains to execute in fips_mode, you must turn
78       on the fips_mode boolean. Enabled by default.
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80       setsebool -P fips_mode 1
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84       If you want to allow confined applications to run  with  kerberos,  you
85       must turn on the kerberos_enabled boolean. Enabled by default.
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87       setsebool -P kerberos_enabled 1
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91       If  you  want  to control the ability to mmap a low area of the address
92       space, as configured by /proc/sys/vm/mmap_min_addr, you  must  turn  on
93       the mmap_low_allowed boolean. Disabled by default.
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95       setsebool -P mmap_low_allowed 1
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99       If  you  want  to  allow  system  to run with NIS, you must turn on the
100       nis_enabled boolean. Disabled by default.
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102       setsebool -P nis_enabled 1
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106       If you want to allow confined applications to use nscd  shared  memory,
107       you must turn on the nscd_use_shm boolean. Disabled by default.
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109       setsebool -P nscd_use_shm 1
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113       If  you  want  to  disable  kernel module loading, you must turn on the
114       secure_mode_insmod boolean. Enabled by default.
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116       setsebool -P secure_mode_insmod 1
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119
120       If you want to allow unconfined executables to make their  heap  memory
121       executable.   Doing  this  is  a  really bad idea. Probably indicates a
122       badly coded executable, but could indicate an attack.  This  executable
123       should   be   reported  in  bugzilla,  you  must  turn  on  the  selin‐
124       uxuser_execheap boolean. Disabled by default.
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126       setsebool -P selinuxuser_execheap 1
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129
130       If you want to allow unconfined executables to make  their  stack  exe‐
131       cutable.   This  should  never, ever be necessary. Probably indicates a
132       badly coded executable, but could indicate an attack.  This  executable
133       should  be reported in bugzilla, you must turn on the selinuxuser_exec‐
134       stack boolean. Enabled by default.
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136       setsebool -P selinuxuser_execstack 1
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MANAGED FILES

141       The SELinux process type systemd_coredump_t can  manage  files  labeled
142       with  the following file types.  The paths listed are the default paths
143       for these file types.  Note the processes UID still need  to  have  DAC
144       permissions.
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146       file_type
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148            all files on the system
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FILE CONTEXTS

152       SELinux requires files to have an extended attribute to define the file
153       type.
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155       You can see the context of a file using the -Z option to ls
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157       Policy governs the access  confined  processes  have  to  these  files.
158       SELinux systemd_coredump policy is very flexible allowing users to set‐
159       up their systemd_coredump processes in as secure a method as possible.
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161       STANDARD FILE CONTEXT
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163       SELinux defines the file context types for the systemd_coredump, if you
164       wanted  to store files with these types in a diffent paths, you need to
165       execute the semanage command to sepecify alternate  labeling  and  then
166       use restorecon to put the labels on disk.
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168       semanage  fcontext -a -t systemd_coredump_tmpfs_t '/srv/mysystemd_core‐
169       dump_content(/.*)?'
170       restorecon -R -v /srv/mysystemd_coredump_content
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172       Note: SELinux often uses regular expressions  to  specify  labels  that
173       match multiple files.
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175       The following file types are defined for systemd_coredump:
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179       systemd_coredump_exec_t
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181       - Set files with the systemd_coredump_exec_t type, if you want to tran‐
182       sition an executable to the systemd_coredump_t domain.
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185       Paths:
186            /bin/systemd-coredump, /usr/lib/systemd/systemd-coredump
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189       systemd_coredump_tmpfs_t
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191       - Set files with the systemd_coredump_tmpfs_t  type,  if  you  want  to
192       store systemd coredump files on a tmpfs file system.
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196       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.
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COMMANDS

203       semanage fcontext can also be used to manipulate default  file  context
204       mappings.
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206       semanage  permissive  can  also  be used to manipulate whether or not a
207       process type is permissive.
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209       semanage module can also be used to enable/disable/install/remove  pol‐
210       icy modules.
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212       semanage boolean can also be used to manipulate the booleans
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214
215       system-config-selinux is a GUI tool available to customize SELinux pol‐
216       icy settings.
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AUTHOR

220       This manual page was auto-generated using sepolicy manpage .
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SEE ALSO

224       selinux(8), systemd_coredump(8), semanage(8), restorecon(8),  chcon(1),
225       sepolicy(8), setsebool(8)
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229systemd_coredump                   19-05-30        systemd_coredump_selinux(8)
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