959fdaaa25
Otherwise all domains can create/write files that are executable by all other domains. If I understand correctly, this should only be necessary for app domains executing content from legacy unlabeled userdata partitions on existing devices and zygote and system_server mappings of dalvikcache files, so only allow it for those domains. If required for others, add it to the individual domain .te file, not for all domains. Change-Id: I6f5715eb1ecf2911e70772b9ab4e531feea18819 Signed-off-by: Stephen Smalley <sds@tycho.nsa.gov>
57 lines
2.3 KiB
Text
57 lines
2.3 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 x_file_perms };
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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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# For legacy unlabeled userdata on existing devices.
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# See discussion of Unlabeled files in domain.te for more information.
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# This rule is for dalvikcache mmap/mprotect PROT_EXEC.
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allow zygote unlabeled:file execute;
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