1ypxfr_selinux(8) SELinux Policy ypxfr ypxfr_selinux(8)
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6 ypxfr_selinux - Security Enhanced Linux Policy for the ypxfr processes
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9 Security-Enhanced Linux secures the ypxfr processes via flexible manda‐
10 tory access control.
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12 The ypxfr processes execute with the ypxfr_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 ypxfr_t
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23 The ypxfr_t SELinux type can be entered via the ypxfr_exec_t file type.
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25 The default entrypoint paths for the ypxfr_t domain are the following:
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27 /usr/lib/yp/ypxfr, /usr/sbin/rpc.ypxfrd
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30 SELinux defines process types (domains) for each process running on the
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33 You can see the context of a process using the -Z option to ps
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35 Policy governs the access confined processes have to files. SELinux
36 ypxfr policy is very flexible allowing users to setup their ypxfr pro‐
37 cesses in as secure a method as possible.
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39 The following process types are defined for ypxfr:
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41 ypxfr_t
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43 Note: semanage permissive -a ypxfr_t can be used to make the process
44 type ypxfr_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. ypxfr
51 policy is extremely flexible and has several booleans that allow you to
52 manipulate the policy and run ypxfr with the tightest access possible.
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56 If you want to allow all daemons to write corefiles to /, you must turn
57 on the daemons_dump_core boolean. Disabled by default.
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59 setsebool -P daemons_dump_core 1
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63 If you want to enable cluster mode for daemons, you must turn on the
64 daemons_enable_cluster_mode boolean. Enabled by default.
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66 setsebool -P daemons_enable_cluster_mode 1
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70 If you want to allow all daemons to use tcp wrappers, you must turn on
71 the daemons_use_tcp_wrapper boolean. Disabled by default.
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73 setsebool -P daemons_use_tcp_wrapper 1
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77 If you want to allow all daemons the ability to read/write terminals,
78 you must turn on the daemons_use_tty boolean. Disabled by default.
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80 setsebool -P daemons_use_tty 1
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84 If you want to deny any process from ptracing or debugging any other
85 processes, you must turn on the deny_ptrace boolean. Enabled by
86 default.
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88 setsebool -P deny_ptrace 1
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92 If you want to allow any process to mmap any file on system with
93 attribute file_type, you must turn on the domain_can_mmap_files bool‐
94 ean. Enabled by default.
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96 setsebool -P domain_can_mmap_files 1
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100 If you want to allow all domains write to kmsg_device, while kernel is
101 executed with systemd.log_target=kmsg parameter, you must turn on the
102 domain_can_write_kmsg boolean. Disabled by default.
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104 setsebool -P domain_can_write_kmsg 1
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108 If you want to allow all domains to use other domains file descriptors,
109 you must turn on the domain_fd_use boolean. Enabled by default.
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111 setsebool -P domain_fd_use 1
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115 If you want to allow all domains to have the kernel load modules, you
116 must turn on the domain_kernel_load_modules boolean. Disabled by
117 default.
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119 setsebool -P domain_kernel_load_modules 1
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123 If you want to allow all domains to execute in fips_mode, you must turn
124 on the fips_mode boolean. Enabled by default.
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126 setsebool -P fips_mode 1
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130 If you want to enable reading of urandom for all domains, you must turn
131 on the global_ssp boolean. Disabled by default.
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133 setsebool -P global_ssp 1
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138 The SELinux process type ypxfr_t can manage files labeled with the fol‐
139 lowing file types. The paths listed are the default paths for these
140 file types. Note the processes UID still need to have DAC permissions.
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142 cluster_conf_t
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144 /etc/cluster(/.*)?
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146 cluster_var_lib_t
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148 /var/lib/pcsd(/.*)?
149 /var/lib/cluster(/.*)?
150 /var/lib/openais(/.*)?
151 /var/lib/pengine(/.*)?
152 /var/lib/corosync(/.*)?
153 /usr/lib/heartbeat(/.*)?
154 /var/lib/heartbeat(/.*)?
155 /var/lib/pacemaker(/.*)?
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157 cluster_var_run_t
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159 /var/run/crm(/.*)?
160 /var/run/cman_.*
161 /var/run/rsctmp(/.*)?
162 /var/run/aisexec.*
163 /var/run/heartbeat(/.*)?
164 /var/run/corosync-qnetd(/.*)?
165 /var/run/corosync-qdevice(/.*)?
166 /var/run/cpglockd.pid
167 /var/run/corosync.pid
168 /var/run/rgmanager.pid
169 /var/run/cluster/rgmanager.sk
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171 root_t
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173 /sysroot/ostree/deploy/.*-atomic.*/deploy(/.*)?
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175 /initrd
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177 var_yp_t
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179 /var/yp(/.*)?
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181 ypxfr_var_run_t
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183 /var/run/ypxfrd.*
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187 SELinux requires files to have an extended attribute to define the file
188 type.
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190 You can see the context of a file using the -Z option to ls
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192 Policy governs the access confined processes have to these files.
193 SELinux ypxfr policy is very flexible allowing users to setup their
194 ypxfr processes in as secure a method as possible.
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196 STANDARD FILE CONTEXT
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198 SELinux defines the file context types for the ypxfr, if you wanted to
199 store files with these types in a diffent paths, you need to execute
200 the semanage command to sepecify alternate labeling and then use
201 restorecon to put the labels on disk.
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203 semanage fcontext -a -t ypxfr_var_run_t '/srv/myypxfr_content(/.*)?'
204 restorecon -R -v /srv/myypxfr_content
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206 Note: SELinux often uses regular expressions to specify labels that
207 match multiple files.
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209 The following file types are defined for ypxfr:
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213 ypxfr_exec_t
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215 - Set files with the ypxfr_exec_t type, if you want to transition an
216 executable to the ypxfr_t domain.
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219 Paths:
220 /usr/lib/yp/ypxfr, /usr/sbin/rpc.ypxfrd
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223 ypxfr_var_run_t
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225 - Set files with the ypxfr_var_run_t type, if you want to store the
226 ypxfr files under the /run or /var/run directory.
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230 Note: File context can be temporarily modified with the chcon command.
231 If you want to permanently change the file context you need to use the
232 semanage fcontext command. This will modify the SELinux labeling data‐
233 base. You will need to use restorecon to apply the labels.
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237 semanage fcontext can also be used to manipulate default file context
238 mappings.
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240 semanage permissive can also be used to manipulate whether or not a
241 process type is permissive.
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243 semanage module can also be used to enable/disable/install/remove pol‐
244 icy modules.
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246 semanage boolean can also be used to manipulate the booleans
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249 system-config-selinux is a GUI tool available to customize SELinux pol‐
250 icy settings.
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254 This manual page was auto-generated using sepolicy manpage .
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258 selinux(8), ypxfr(8), semanage(8), restorecon(8), chcon(1), sepolicy(8)
259 , setsebool(8)
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263ypxfr 19-04-25 ypxfr_selinux(8)