37afd3f6c3
Now that all of /data outside of /data/data should be labeled even on legacy devices as a result of Ib8d9751a47c8e0238cf499fcec61898937945d9d, there should be no reason to permit the system_server or zygote execute access to unlabeled files. This is the only remaining case where a type writable by app domains can be executed by system services, so eliminating it is desirable. That said, I have not specifically tested the non-SE to SE upgrade path to confirm that this causes no problems. Change-Id: Ie488bd6e347d4a210806a3308ab25b00952aadb4 Signed-off-by: Stephen Smalley <sds@tycho.nsa.gov>
54 lines
2.1 KiB
Text
54 lines
2.1 KiB
Text
# zygote
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type zygote, domain;
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type zygote_exec, exec_type, file_type;
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init_daemon_domain(zygote)
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typeattribute zygote mlstrustedsubject;
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# Override DAC on files and switch uid/gid.
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allow zygote self:capability { dac_override setgid setuid fowner };
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# Drop capabilities from bounding set.
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allow zygote self:capability setpcap;
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# Switch SELinux context to app domains.
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allow zygote system_server:process dyntransition;
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allow zygote appdomain:process dyntransition;
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# Allow zygote to read app /proc/pid dirs (b/10455872)
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allow zygote appdomain:dir { getattr search };
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allow zygote appdomain:file { r_file_perms };
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# Move children into the peer process group.
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allow zygote system_server:process { getpgid setpgid };
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allow zygote appdomain:process { getpgid setpgid };
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# Write to system data.
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allow zygote system_data_file:dir rw_dir_perms;
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allow zygote system_data_file:file create_file_perms;
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allow zygote dalvikcache_data_file:dir rw_dir_perms;
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allow zygote dalvikcache_data_file:file create_file_perms;
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# For art.
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allow zygote dalvikcache_data_file:file execute;
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# Execute dexopt.
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allow zygote system_file:file x_file_perms;
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# Control cgroups.
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allow zygote cgroup:dir create_dir_perms;
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allow zygote self:capability sys_admin;
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# Check validity of SELinux context before use.
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selinux_check_context(zygote)
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# Check SELinux permissions.
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selinux_check_access(zygote)
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# Read /seapp_contexts and /data/security/seapp_contexts
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security_access_policy(zygote)
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# Setting up /storage/emulated.
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allow zygote rootfs:dir mounton;
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allow zygote sdcard_type:dir { write search setattr create add_name mounton };
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dontaudit zygote self:capability fsetid;
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allow zygote tmpfs:dir { write create add_name setattr mounton search };
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allow zygote tmpfs:filesystem mount;
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allow zygote labeledfs:filesystem remount;
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# Handle --invoke-with command when launching Zygote with a wrapper command.
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allow zygote zygote_exec:file { execute_no_trans open };
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# handle bugreports b/10498304
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allow zygote ashmem_device:chr_file execute;
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allow zygote shell_data_file:file { write getattr };
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allow zygote system_server:binder { transfer call };
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allow zygote servicemanager:binder { call };
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