avahi_selinux(8)

1avahi_selinux(8)             SELinux Policy avahi             avahi_selinux(8)
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NAME

6       avahi_selinux - Security Enhanced Linux Policy for the avahi processes
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DESCRIPTION

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

23       The avahi_t SELinux type can be entered via the avahi_exec_t file type.
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25       The default entrypoint paths for the avahi_t domain are the following:
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27       /usr/sbin/avahi-daemon,    /usr/sbin/avahi-autoipd,    /usr/sbin/avahi-
28       dnsconfd
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PROCESS TYPES

31       SELinux defines process types (domains) for each process running on the
32       system
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34       You can see the context of a process using the -Z option to ps
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36       Policy governs the access confined processes have  to  files.   SELinux
37       avahi  policy is very flexible allowing users to setup their avahi pro‐
38       cesses in as secure a method as possible.
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40       The following process types are defined for avahi:
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42       avahi_t
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44       Note: semanage permissive -a avahi_t can be used to  make  the  process
45       type  avahi_t  permissive.  SELinux  does not deny access to permissive
46       process types, but the AVC (SELinux denials) messages are still  gener‐
47       ated.
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BOOLEANS

51       SELinux  policy  is customizable based on least access required.  avahi
52       policy is extremely flexible and has several booleans that allow you to
53       manipulate the policy and run avahi with the tightest access possible.
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57       If you want to allow all daemons to write corefiles to /, you must turn
58       on the allow_daemons_dump_core boolean. Disabled by default.
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60       setsebool -P allow_daemons_dump_core 1
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64       If you want to allow all daemons to use tcp wrappers, you must turn  on
65       the allow_daemons_use_tcp_wrapper boolean. Disabled by default.
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67       setsebool -P allow_daemons_use_tcp_wrapper 1
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71       If  you  want to allow all daemons the ability to read/write terminals,
72       you  must  turn  on  the  allow_daemons_use_tty  boolean.  Disabled  by
73       default.
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75       setsebool -P allow_daemons_use_tty 1
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79       If you want to allow all domains to use other domains file descriptors,
80       you must turn on the allow_domain_fd_use boolean. Enabled by default.
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82       setsebool -P allow_domain_fd_use 1
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86       If you want to allow confined applications to run  with  kerberos,  you
87       must turn on the allow_kerberos boolean. Enabled by default.
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89       setsebool -P allow_kerberos 1
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93       If  you want to allow sysadm to debug or ptrace all processes, you must
94       turn on the allow_ptrace boolean. Disabled by default.
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96       setsebool -P allow_ptrace 1
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100       If you want to allow system to run with  NIS,  you  must  turn  on  the
101       allow_ypbind boolean. Disabled by default.
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103       setsebool -P allow_ypbind 1
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106
107       If  you  want  to enable cluster mode for daemons, you must turn on the
108       daemons_enable_cluster_mode boolean. Disabled by default.
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110       setsebool -P daemons_enable_cluster_mode 1
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114       If you want to allow all domains to have the kernel load  modules,  you
115       must  turn  on  the  domain_kernel_load_modules  boolean.  Disabled  by
116       default.
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118       setsebool -P domain_kernel_load_modules 1
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121
122       If you want to allow all domains to execute in fips_mode, you must turn
123       on the fips_mode boolean. Enabled by default.
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125       setsebool -P fips_mode 1
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129       If you want to enable reading of urandom for all domains, you must turn
130       on the global_ssp boolean. Disabled by default.
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132       setsebool -P global_ssp 1
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136       If you want to allow Apache to communicate with avahi service via dbus,
137       you must turn on the httpd_dbus_avahi boolean. Disabled by default.
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139       setsebool -P httpd_dbus_avahi 1
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143       If you want to enable support for upstart as the init program, you must
144       turn on the init_upstart boolean. Enabled by default.
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146       setsebool -P init_upstart 1
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150       If you want to allow confined applications to use nscd  shared  memory,
151       you must turn on the nscd_use_shm boolean. Enabled by default.
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153       setsebool -P nscd_use_shm 1
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MANAGED FILES

158       The SELinux process type avahi_t can manage files labeled with the fol‐
159       lowing file types.  The paths listed are the default  paths  for  these
160       file types.  Note the processes UID still need to have DAC permissions.
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162       avahi_var_lib_t
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164            /var/lib/avahi-autoipd(/.*)?
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166       avahi_var_run_t
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168            /var/run/avahi-daemon(/.*)?
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170       cluster_conf_t
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172            /etc/cluster(/.*)?
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174       cluster_var_lib_t
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176            /var/lib(64)?/openais(/.*)?
177            /var/lib(64)?/pengine(/.*)?
178            /var/lib(64)?/corosync(/.*)?
179            /usr/lib(64)?/heartbeat(/.*)?
180            /var/lib(64)?/heartbeat(/.*)?
181            /var/lib(64)?/pacemaker(/.*)?
182            /var/lib/cluster(/.*)?
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184       cluster_var_run_t
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186            /var/run/crm(/.*)?
187            /var/run/cman_.*
188            /var/run/rsctmp(/.*)?
189            /var/run/aisexec.*
190            /var/run/heartbeat(/.*)?
191            /var/run/cpglockd.pid
192            /var/run/corosync.pid
193            /var/run/rgmanager.pid
194            /var/run/cluster/rgmanager.sk
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196       initrc_tmp_t
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198
199       mnt_t
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201            /mnt(/[^/]*)
202            /mnt(/[^/]*)?
203            /rhev(/[^/]*)?
204            /media(/[^/]*)
205            /media(/[^/]*)?
206            /etc/rhgb(/.*)?
207            /media/.hal-.*
208            /net
209            /afs
210            /rhev
211            /misc
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213       net_conf_t
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215            /etc/ntpd?.conf.*
216            /etc/yp.conf.*
217            /etc/denyhosts.*
218            /etc/hosts.deny.*
219            /etc/resolv.conf.*
220            /etc/ntp/step-tickers.*
221            /etc/sysconfig/networking(/.*)?
222            /etc/sysconfig/network-scripts(/.*)?
223            /etc/sysconfig/network-scripts/.*resolv.conf
224            /etc/hosts
225            /etc/ethers
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227       root_t
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229            /
230            /initrd
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232       tmp_t
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234            /tmp
235            /usr/tmp
236            /var/tmp
237            /tmp-inst
238            /var/tmp-inst
239            /var/tmp/vi.recover
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FILE CONTEXTS

243       SELinux requires files to have an extended attribute to define the file
244       type.
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246       You can see the context of a file using the -Z option to ls
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248       Policy governs the access  confined  processes  have  to  these  files.
249       SELinux  avahi  policy  is  very flexible allowing users to setup their
250       avahi processes in as secure a method as possible.
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252       STANDARD FILE CONTEXT
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254       SELinux defines the file context types for the avahi, if you wanted  to
255       store  files  with  these types in a diffent paths, you need to execute
256       the semanage command  to  sepecify  alternate  labeling  and  then  use
257       restorecon to put the labels on disk.
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259       semanage fcontext -a -t avahi_var_run_t '/srv/myavahi_content(/.*)?'
260       restorecon -R -v /srv/myavahi_content
261
262       Note:  SELinux  often  uses  regular expressions to specify labels that
263       match multiple files.
264
265       The following file types are defined for avahi:
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269       avahi_exec_t
270
271       - Set files with the avahi_exec_t type, if you want  to  transition  an
272       executable to the avahi_t domain.
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275       Paths:
276            /usr/sbin/avahi-daemon,  /usr/sbin/avahi-autoipd, /usr/sbin/avahi-
277            dnsconfd
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280       avahi_initrc_exec_t
281
282       - Set files with the avahi_initrc_exec_t type, if you want  to  transi‐
283       tion an executable to the avahi_initrc_t domain.
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287       avahi_var_lib_t
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289       -  Set  files  with  the avahi_var_lib_t type, if you want to store the
290       avahi files under the /var/lib directory.
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294       avahi_var_run_t
295
296       - Set files with the avahi_var_run_t type, if you  want  to  store  the
297       avahi files under the /run or /var/run directory.
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301       Note:  File context can be temporarily modified with the chcon command.
302       If you want to permanently change the file context you need to use  the
303       semanage fcontext command.  This will modify the SELinux labeling data‐
304       base.  You will need to use restorecon to apply the labels.
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COMMANDS

308       semanage fcontext can also be used to manipulate default  file  context
309       mappings.
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311       semanage  permissive  can  also  be used to manipulate whether or not a
312       process type is permissive.
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314       semanage module can also be used to enable/disable/install/remove  pol‐
315       icy modules.
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317       semanage boolean can also be used to manipulate the booleans
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319
320       system-config-selinux is a GUI tool available to customize SELinux pol‐
321       icy settings.
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AUTHOR

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