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54 lines
2.2 KiB
54 lines
2.2 KiB
# ueventd seclabel is specified in init.rc since |
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# it lives in the rootfs and has no unique file type. |
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type ueventd, domain; |
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# Write to /dev/kmsg. |
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allow ueventd kmsg_device:chr_file rw_file_perms; |
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allow ueventd self:capability { chown mknod net_admin setgid fsetid sys_rawio dac_override fowner }; |
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allow ueventd device:file create_file_perms; |
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r_dir_file(ueventd, rootfs) |
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# ueventd needs write access to files in /sys to regenerate uevents |
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allow ueventd sysfs_type:file w_file_perms; |
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r_dir_file(ueventd, sysfs_type) |
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allow ueventd sysfs_type:{ file lnk_file } { relabelfrom relabelto setattr }; |
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allow ueventd sysfs_type:dir { relabelfrom relabelto setattr }; |
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allow ueventd tmpfs:chr_file rw_file_perms; |
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allow ueventd dev_type:dir create_dir_perms; |
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allow ueventd dev_type:lnk_file { create unlink }; |
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allow ueventd dev_type:chr_file { getattr create setattr unlink }; |
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allow ueventd dev_type:blk_file { getattr relabelfrom relabelto create setattr unlink }; |
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allow ueventd self:netlink_kobject_uevent_socket create_socket_perms_no_ioctl; |
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allow ueventd efs_file:dir search; |
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allow ueventd efs_file:file r_file_perms; |
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# Get SELinux enforcing status. |
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r_dir_file(ueventd, selinuxfs) |
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# Access for /vendor/ueventd.rc and /vendor/firmware |
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r_dir_file(ueventd, { vendor_file_type -vendor_app_file -vendor_overlay_file }) |
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# Get file contexts for new device nodes |
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allow ueventd file_contexts_file:file r_file_perms; |
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# Use setfscreatecon() to label /dev directories and files. |
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allow ueventd self:process setfscreate; |
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##### |
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##### neverallow rules |
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##### |
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# ueventd must never set properties, otherwise deadlocks may occur. |
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# https://android-review.googlesource.com/#/c/133120/6/init/devices.cpp@941 |
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# No writing to the property socket, connecting to init, or setting properties. |
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neverallow ueventd property_socket:sock_file write; |
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neverallow ueventd init:unix_stream_socket connectto; |
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neverallow ueventd property_type:property_service set; |
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# Restrict ueventd access on block devices to maintenence operations. |
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neverallow ueventd dev_type:blk_file ~{ getattr relabelfrom relabelto create setattr unlink }; |
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# Only relabelto as we would never want to relabelfrom kmem_device or port_device |
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neverallow ueventd { kmem_device port_device }:chr_file ~{ getattr create setattr unlink relabelto };
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