1usbmuxd_selinux(8) SELinux Policy usbmuxd usbmuxd_selinux(8)
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6 usbmuxd_selinux - Security Enhanced Linux Policy for the usbmuxd pro‐
7 cesses
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10 Security-Enhanced Linux secures the usbmuxd processes via flexible
11 mandatory access control.
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13 The usbmuxd processes execute with the usbmuxd_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 usbmuxd_t
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24 The usbmuxd_t SELinux type can be entered via the usbmuxd_exec_t file
25 type.
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27 The default entrypoint paths for the usbmuxd_t domain are the follow‐
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30 /usr/sbin/usbmuxd
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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 usbmuxd policy is very flexible allowing users to setup their usbmuxd
40 processes in as secure a method as possible.
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42 The following process types are defined for usbmuxd:
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44 usbmuxd_t
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46 Note: semanage permissive -a usbmuxd_t can be used to make the process
47 type usbmuxd_t permissive. SELinux does not deny access to permissive
48 process types, but the AVC (SELinux denials) messages are still gener‐
49 ated.
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53 SELinux policy is customizable based on least access required. usbmuxd
54 policy is extremely flexible and has several booleans that allow you to
55 manipulate the policy and run usbmuxd with the tightest access possi‐
56 ble.
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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 allow all daemons the ability to read/write terminals,
69 you must turn on the daemons_use_tty boolean. Disabled by default.
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71 setsebool -P daemons_use_tty 1
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75 If you want to deny any process from ptracing or debugging any other
76 processes, you must turn on the deny_ptrace boolean. Enabled by
77 default.
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79 setsebool -P deny_ptrace 1
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83 If you want to allow any process to mmap any file on system with
84 attribute file_type, you must turn on the domain_can_mmap_files bool‐
85 ean. Enabled by default.
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87 setsebool -P domain_can_mmap_files 1
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91 If you want to allow all domains write to kmsg_device, while kernel is
92 executed with systemd.log_target=kmsg parameter, you must turn on the
93 domain_can_write_kmsg boolean. Disabled by default.
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95 setsebool -P domain_can_write_kmsg 1
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99 If you want to allow all domains to use other domains file descriptors,
100 you must turn on the domain_fd_use boolean. Enabled by default.
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102 setsebool -P domain_fd_use 1
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106 If you want to allow all domains to have the kernel load modules, you
107 must turn on the domain_kernel_load_modules boolean. Disabled by
108 default.
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110 setsebool -P domain_kernel_load_modules 1
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114 If you want to allow all domains to execute in fips_mode, you must turn
115 on the fips_mode boolean. Enabled by default.
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117 setsebool -P fips_mode 1
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121 If you want to enable reading of urandom for all domains, you must turn
122 on the global_ssp boolean. Disabled by default.
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124 setsebool -P global_ssp 1
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128 If you want to allow confined applications to run with kerberos, you
129 must turn on the kerberos_enabled boolean. Enabled by default.
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131 setsebool -P kerberos_enabled 1
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135 If you want to allow system to run with NIS, you must turn on the
136 nis_enabled boolean. Disabled by default.
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138 setsebool -P nis_enabled 1
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142 If you want to allow confined applications to use nscd shared memory,
143 you must turn on the nscd_use_shm boolean. Disabled by default.
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145 setsebool -P nscd_use_shm 1
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150 The SELinux process type usbmuxd_t can manage files labeled with the
151 following file types. The paths listed are the default paths for these
152 file types. Note the processes UID still need to have DAC permissions.
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154 usbmuxd_var_lib_t
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156 /var/lib/lockdown(/.*)?
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158 usbmuxd_var_run_t
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160 /var/run/usbmuxd.*
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164 SELinux requires files to have an extended attribute to define the file
165 type.
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167 You can see the context of a file using the -Z option to ls
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169 Policy governs the access confined processes have to these files.
170 SELinux usbmuxd policy is very flexible allowing users to setup their
171 usbmuxd processes in as secure a method as possible.
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173 STANDARD FILE CONTEXT
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175 SELinux defines the file context types for the usbmuxd, if you wanted
176 to store files with these types in a diffent paths, you need to execute
177 the semanage command to sepecify alternate labeling and then use
178 restorecon to put the labels on disk.
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180 semanage fcontext -a -t usbmuxd_var_run_t '/srv/myusbmuxd_con‐
181 tent(/.*)?'
182 restorecon -R -v /srv/myusbmuxd_content
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184 Note: SELinux often uses regular expressions to specify labels that
185 match multiple files.
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187 The following file types are defined for usbmuxd:
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191 usbmuxd_exec_t
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193 - Set files with the usbmuxd_exec_t type, if you want to transition an
194 executable to the usbmuxd_t domain.
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198 usbmuxd_unit_file_t
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200 - Set files with the usbmuxd_unit_file_t type, if you want to treat the
201 files as usbmuxd unit content.
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205 usbmuxd_var_lib_t
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207 - Set files with the usbmuxd_var_lib_t type, if you want to store the
208 usbmuxd files under the /var/lib directory.
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212 usbmuxd_var_run_t
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214 - Set files with the usbmuxd_var_run_t type, if you want to store the
215 usbmuxd files under the /run or /var/run directory.
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219 Note: File context can be temporarily modified with the chcon command.
220 If you want to permanently change the file context you need to use the
221 semanage fcontext command. This will modify the SELinux labeling data‐
222 base. You will need to use restorecon to apply the labels.
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226 semanage fcontext can also be used to manipulate default file context
227 mappings.
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229 semanage permissive can also be used to manipulate whether or not a
230 process type is permissive.
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232 semanage module can also be used to enable/disable/install/remove pol‐
233 icy modules.
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235 semanage boolean can also be used to manipulate the booleans
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238 system-config-selinux is a GUI tool available to customize SELinux pol‐
239 icy settings.
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243 This manual page was auto-generated using sepolicy manpage .
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247 selinux(8), usbmuxd(8), semanage(8), restorecon(8), chcon(1), sepol‐
248 icy(8) , setsebool(8)
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252usbmuxd 19-04-25 usbmuxd_selinux(8)