5d89abde99
These denials occur on boot when android_get_control_file also
changes from readlink() to realpath(), because realpath() will
lstat() the given path.
Some other domains (fastbootd, update_engine, etc.) also uses
libcutils to write to kernel log, where android_get_control_file()
is invoked, hence getattr is added to them as well.
04-28 06:15:22.290 618 618 I auditd : type=1400 audit(0.0:4): avc: denied { getattr } for comm="logd" path="/dev/kmsg" dev="tmpfs" ino=20917 scontext=u:r:logd:s0 tcontext=u:object_r:kmsg_device:s0 tclass=chr_file permissive=0
03-20 19:52:23.431 900 900 I auditd : type=1400 audit(0.0:7): avc: denied { getattr } for comm="android.hardwar" path="/dev/kmsg" dev="tmpfs" ino=20917 scontext=u:r:hal_health_default:s0 tcontext=u:object_r:kmsg_device:s0 tclass=chr_file permissive=0
...
03-20 22:40:42.316 1 1 W init : type=1400 audit(0.0:33): avc: denied { getattr } for path="/dev/kmsg" dev="tmpfs" ino=21999 scontext=u:r:init:s0 tcontext=u:object_r:kmsg_device:s0 tclass=chr_file permissive=0
Test: no denials related to these
Change-Id: I5263dd6b64c06fb092f3461858f57a1a09107429
28 lines
1.0 KiB
Plaintext
28 lines
1.0 KiB
Plaintext
# HwBinder IPC from client to server, and callbacks
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binder_call(hal_health_client, hal_health_server)
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binder_call(hal_health_server, hal_health_client)
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hal_attribute_hwservice(hal_health, hal_health_hwservice)
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# Common rules for a health service.
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# Allow to listen to uevents for updates
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allow hal_health_server self:netlink_kobject_uevent_socket create_socket_perms_no_ioctl;
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# Allow to read /sys/class/power_supply directory
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allow hal_health_server sysfs:dir r_dir_perms;
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# Allow to read files under /sys/class/power_supply. Implementations typically have symlinks
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# to vendor specific files. Vendors should mark sysfs_batteryinfo on all files read by health
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# HAL service.
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r_dir_file(hal_health_server, sysfs_batteryinfo)
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# Allow to wake up to send periodic events
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wakelock_use(hal_health_server)
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# Write to /dev/kmsg
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allow hal_health_server kmsg_device:chr_file { getattr w_file_perms };
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# Allow to use timerfd to wake itself up periodically to send health info.
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allow hal_health_server self:capability2 wake_alarm;
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