smsd_selinux(8)

1smsd_selinux(8)               SELinux Policy smsd              smsd_selinux(8)
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NAME

6       smsd_selinux - Security Enhanced Linux Policy for the smsd processes
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DESCRIPTION

9       Security-Enhanced  Linux secures the smsd processes via flexible manda‐
10       tory access control.
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12       The smsd processes execute with the smsd_t SELinux type. You can  check
13       if  you  have  these processes running by executing the ps command with
14       the -Z qualifier.
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16       For example:
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18       ps -eZ | grep smsd_t
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ENTRYPOINTS

23       The smsd_t SELinux type can be entered via the smsd_exec_t,  file_type,
24       unlabeled_t,  proc_type,  filesystem_type,  mtrr_device_t,  sysctl_type
25       file types.
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27       The default entrypoint paths for the smsd_t domain are the following:
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29       /usr/sbin/smsd, all files on the system, /dev/cpu/mtrr
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PROCESS TYPES

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       smsd policy is very flexible allowing users to setup  their  smsd  pro‐
39       cesses in as secure a method as possible.
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41       The following process types are defined for smsd:
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43       smsd_t
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45       Note:  semanage  permissive  -a  smsd_t can be used to make the process
46       type smsd_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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BOOLEANS

52       SELinux policy is customizable based on least  access  required.   smsd
53       policy is extremely flexible and has several booleans that allow you to
54       manipulate the policy and run smsd with the tightest access possible.
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58       If you want to allow all daemons to write corefiles to /, you must turn
59       on the allow_daemons_dump_core boolean. Disabled by default.
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61       setsebool -P allow_daemons_dump_core 1
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65       If  you want to allow all daemons to use tcp wrappers, you must turn on
66       the allow_daemons_use_tcp_wrapper boolean. Disabled by default.
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68       setsebool -P allow_daemons_use_tcp_wrapper 1
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72       If you want to allow all daemons the ability to  read/write  terminals,
73       you  must  turn  on  the  allow_daemons_use_tty  boolean.  Disabled  by
74       default.
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76       setsebool -P allow_daemons_use_tty 1
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80       If you want to allow all domains to use other domains file descriptors,
81       you must turn on the allow_domain_fd_use boolean. Enabled by default.
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83       setsebool -P allow_domain_fd_use 1
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87       If  you  want to allow unconfined executables to make their heap memory
88       executable.  Doing this is a really  bad  idea.  Probably  indicates  a
89       badly  coded  executable, but could indicate an attack. This executable
90       should be reported in bugzilla, you must  turn  on  the  allow_execheap
91       boolean. Disabled by default.
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93       setsebool -P allow_execheap 1
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97       If  you  want to allow unconfined executables to map a memory region as
98       both executable and writable, this  is  dangerous  and  the  executable
99       should  be  reported  in  bugzilla), you must turn on the allow_execmem
100       boolean. Enabled by default.
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102       setsebool -P allow_execmem 1
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106       If you want to  allow  all  unconfined  executables  to  use  libraries
107       requiring  text  relocation  that are not labeled textrel_shlib_t), you
108       must turn on the allow_execmod boolean. Enabled by default.
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110       setsebool -P allow_execmod 1
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114       If you want to allow unconfined executables to make  their  stack  exe‐
115       cutable.   This  should  never, ever be necessary. Probably indicates a
116       badly coded executable, but could indicate an attack.  This  executable
117       should  be  reported in bugzilla), you must turn on the allow_execstack
118       boolean. Enabled by default.
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120       setsebool -P allow_execstack 1
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124       If you want to allow confined applications to run  with  kerberos,  you
125       must turn on the allow_kerberos boolean. Enabled by default.
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127       setsebool -P allow_kerberos 1
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131       If  you want to allow sysadm to debug or ptrace all processes, you must
132       turn on the allow_ptrace boolean. Disabled by default.
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134       setsebool -P allow_ptrace 1
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138       If you want to allow system to run with  NIS,  you  must  turn  on  the
139       allow_ypbind boolean. Disabled by default.
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141       setsebool -P allow_ypbind 1
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145       If  you  want  to enable cluster mode for daemons, you must turn on the
146       daemons_enable_cluster_mode boolean. Disabled by default.
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148       setsebool -P daemons_enable_cluster_mode 1
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152       If you want to allow all domains to have the kernel load  modules,  you
153       must  turn  on  the  domain_kernel_load_modules  boolean.  Disabled  by
154       default.
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156       setsebool -P domain_kernel_load_modules 1
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160       If you want to allow all domains to execute in fips_mode, you must turn
161       on the fips_mode boolean. Enabled by default.
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163       setsebool -P fips_mode 1
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167       If you want to enable reading of urandom for all domains, you must turn
168       on the global_ssp boolean. Disabled by default.
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170       setsebool -P global_ssp 1
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174       If you want to enable support for upstart as the init program, you must
175       turn on the init_upstart boolean. Enabled by default.
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177       setsebool -P init_upstart 1
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181       If  you  want to allow certain domains to map low memory in the kernel,
182       you must turn on the mmap_low_allowed boolean. Disabled by default.
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184       setsebool -P mmap_low_allowed 1
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188       If you want to allow confined applications to use nscd  shared  memory,
189       you must turn on the nscd_use_shm boolean. Enabled by default.
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191       setsebool -P nscd_use_shm 1
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195       If  you want to boolean to determine whether the system permits loading
196       policy, setting enforcing mode, and changing boolean values.  Set  this
197       to  true  and  you  have to reboot to set it back, you must turn on the
198       secure_mode_policyload boolean. Disabled by default.
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200       setsebool -P secure_mode_policyload 1
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204       If you want to support X userspace object manager, you must turn on the
205       xserver_object_manager boolean. Disabled by default.
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207       setsebool -P xserver_object_manager 1
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MANAGED FILES

212       The  SELinux process type smsd_t can manage files labeled with the fol‐
213       lowing file types.  The paths listed are the default  paths  for  these
214       file types.  Note the processes UID still need to have DAC permissions.
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216       file_type
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218            all files on the system
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FILE CONTEXTS

222       SELinux requires files to have an extended attribute to define the file
223       type.
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225       You can see the context of a file using the -Z option to ls
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227       Policy governs the access  confined  processes  have  to  these  files.
228       SELinux smsd policy is very flexible allowing users to setup their smsd
229       processes in as secure a method as possible.
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231       STANDARD FILE CONTEXT
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233       SELinux defines the file context types for the smsd, if you  wanted  to
234       store  files  with  these types in a diffent paths, you need to execute
235       the semanage command  to  sepecify  alternate  labeling  and  then  use
236       restorecon to put the labels on disk.
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238       semanage fcontext -a -t smsd_var_run_t '/srv/mysmsd_content(/.*)?'
239       restorecon -R -v /srv/mysmsd_content
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241       Note:  SELinux  often  uses  regular expressions to specify labels that
242       match multiple files.
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244       The following file types are defined for smsd:
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248       smsd_conf_t
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250       - Set files with the smsd_conf_t type, if you want to treat  the  files
251       as smsd configuration data, usually stored under the /etc directory.
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255       smsd_exec_t
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257       -  Set  files  with  the smsd_exec_t type, if you want to transition an
258       executable to the smsd_t domain.
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262       smsd_initrc_exec_t
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264       - Set files with the smsd_initrc_exec_t type, if you want to transition
265       an executable to the smsd_initrc_t domain.
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269       smsd_log_t
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271       -  Set files with the smsd_log_t type, if you want to treat the data as
272       smsd log data, usually stored under the /var/log directory.
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276       smsd_spool_t
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278       - Set files with the smsd_spool_t type, if you want to store  the  smsd
279       files under the /var/spool directory.
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283       smsd_var_lib_t
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285       - Set files with the smsd_var_lib_t type, if you want to store the smsd
286       files under the /var/lib directory.
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290       smsd_var_run_t
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292       - Set files with the smsd_var_run_t type, if you want to store the smsd
293       files under the /run or /var/run directory.
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297       Note:  File context can be temporarily modified with the chcon command.
298       If you want to permanently change the file context you need to use  the
299       semanage fcontext command.  This will modify the SELinux labeling data‐
300       base.  You will need to use restorecon to apply the labels.
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COMMANDS

304       semanage fcontext can also be used to manipulate default  file  context
305       mappings.
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307       semanage  permissive  can  also  be used to manipulate whether or not a
308       process type is permissive.
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310       semanage module can also be used to enable/disable/install/remove  pol‐
311       icy modules.
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313       semanage boolean can also be used to manipulate the booleans
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316       system-config-selinux is a GUI tool available to customize SELinux pol‐
317       icy settings.
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AUTHOR

321       This manual page was auto-generated using sepolicy manpage .
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