d22987b4da
Motivation: Domain is overly permissive. Start removing permissions from domain and assign them to the domain_deprecated attribute. Domain_deprecated and domain can initially be assigned to all domains. The goal is to not assign domain_deprecated to new domains and to start removing domain_deprecated where it is not required or reassigning the appropriate permissions to the inheriting domain when necessary. Bug: 25433265 Change-Id: I8b11cb137df7bdd382629c98d916a73fe276413c
51 lines
1.5 KiB
Text
51 lines
1.5 KiB
Text
# android user-space log manager
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type logd, domain, domain_deprecated, mlstrustedsubject;
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type logd_exec, exec_type, file_type;
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init_daemon_domain(logd)
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allow logd self:capability { setuid setgid sys_nice audit_control };
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allow logd self:capability2 syslog;
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allow logd self:netlink_audit_socket { create_socket_perms nlmsg_write };
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allow logd kernel:system syslog_read;
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allow logd kmsg_device:chr_file w_file_perms;
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allow logd system_data_file:file r_file_perms;
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# logpersist is only allowed on userdebug and eng builds
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userdebug_or_eng(`
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allow logd misc_logd_file:file create_file_perms;
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allow logd misc_logd_file:dir rw_dir_perms;
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')
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allow logd pstorefs:dir search;
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allow logd pstorefs:file r_file_perms;
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r_dir_file(logd, domain)
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allow logd kernel:system syslog_mod;
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control_logd(logd)
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# case where logpersistd is actually logcat -f in logd context (nee: logcatd)
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userdebug_or_eng(`
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unix_socket_connect(logd, logdr, logd)
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')
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###
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### Neverallow rules
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###
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### logd should NEVER do any of this
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# Block device access.
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neverallow logd dev_type:blk_file { read write };
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# ptrace any other app
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neverallow logd domain:process ptrace;
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# Write to /system.
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neverallow logd system_file:dir_file_class_set write;
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# Write to files in /data/data or system files on /data
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neverallow logd { app_data_file system_data_file }:dir_file_class_set write;
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# logd is not allowed to write anywhere other than /misc/data/logd, and then
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# only on userdebug or eng builds
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neverallow logd { file_type -logd_tmpfs userdebug_or_eng(` -misc_logd_file -coredump_file ') }:file write;
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