Magisk/rules.c

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C
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#include "sepolicy-inject.h"
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void samsung() {
deny("init", "kernel", "security", "load_policy");
deny("policyloader_app", "security_spota_file", "dir", "read");
deny("policyloader_app", "security_spota_file", "dir", "write");
deny("policyloader_app", "security_spota_file", "file", "read");
deny("policyloader_app", "security_spota_file", "file", "write");
deny("system_server", "security_spota_file", "dir", "read");
deny("system_server", "security_spota_file", "dir", "write");
deny("system_server", "security_spota_file", "file", "read");
deny("system_server", "security_spota_file", "file", "write");
deny("system_app", "security_spota_file", "dir", "read");
deny("system_app", "security_spota_file", "dir", "write");
deny("system_app", "security_spota_file", "file", "read");
deny("system_app", "security_spota_file", "file", "write");
deny("installd", "security_spota_file", "dir", "read");
deny("installd", "security_spota_file", "dir", "write");
deny("installd", "security_spota_file", "file", "read");
deny("installd", "security_spota_file", "file", "write");
deny("init", "security_spota_file", "dir", "read");
deny("init", "security_spota_file", "dir", "write");
deny("init", "security_spota_file", "file", "read");
deny("init", "security_spota_file", "file", "write");
deny("ueventd", "security_spota_file", "dir", "read");
deny("ueventd", "security_spota_file", "dir", "write");
deny("ueventd", "security_spota_file", "file", "read");
deny("ueventd", "security_spota_file", "file", "write");
deny("runas", "security_spota_file", "dir", "read");
deny("runas", "security_spota_file", "dir", "write");
deny("runas", "security_spota_file", "file", "read");
deny("runas", "security_spota_file", "file", "write");
deny("drsd", "security_spota_file", "dir", "read");
deny("drsd", "security_spota_file", "dir", "write");
deny("drsd", "security_spota_file", "file", "read");
deny("drsd", "security_spota_file", "file", "write");
deny("debuggerd", "security_spota_file", "dir", "read");
deny("debuggerd", "security_spota_file", "dir", "write");
deny("debuggerd", "security_spota_file", "file", "read");
deny("debuggerd", "security_spota_file", "file", "write");
deny("vold", "security_spota_file", "dir", "read");
deny("vold", "security_spota_file", "dir", "write");
deny("vold", "security_spota_file", "file", "read");
deny("vold", "security_spota_file", "file", "write");
deny("zygote", "security_spota_file", "dir", "read");
deny("zygote", "security_spota_file", "dir", "write");
deny("zygote", "security_spota_file", "file", "read");
deny("zygote", "security_spota_file", "file", "write");
deny("auditd", "security_spota_file", "dir", "read");
deny("auditd", "security_spota_file", "dir", "write");
deny("auditd", "security_spota_file", "file", "read");
deny("auditd", "security_spota_file", "file", "write");
deny("servicemanager", "security_spota_file", "dir", "read");
deny("servicemanager", "security_spota_file", "dir", "write");
deny("servicemanager", "security_spota_file", "file", "read");
deny("servicemanager", "security_spota_file", "file", "write");
deny("itsonbs", "security_spota_file", "dir", "read");
deny("itsonbs", "security_spota_file", "dir", "write");
deny("itsonbs", "security_spota_file", "file", "read");
deny("itsonbs", "security_spota_file", "file", "write");
deny("commonplatformappdomain", "security_spota_file", "dir", "read");
deny("commonplatformappdomain", "security_spota_file", "dir", "write");
deny("commonplatformappdomain", "security_spota_file", "file", "read");
deny("commonplatformappdomain", "security_spota_file", "file", "write");
}
void allowSuClient(char *target) {
allow(target, "rootfs", "file", "execute_no_trans");
allow(target, "rootfs", "file", "execute");
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allow(target, "su", "unix_stream_socket", "connectto");
allow(target, "su", "unix_stream_socket", "getopt");
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allow(target, "su_device", "dir", "search");
allow(target, "su_device", "dir", "read");
allow(target, "su_device", "sock_file", "read");
allow(target, "su_device", "sock_file", "write");
}
void suRights() {
allow("servicemanager", "su", "dir", "search");
allow("servicemanager", "su", "dir", "read");
allow("servicemanager", "su", "file", "open");
allow("servicemanager", "su", "file", "read");
allow("servicemanager", "su", "process", "getattr");
allow("servicemanager", "su", "binder", "transfer");
allow("system_server", "su", "binder", "call");
}
void otherToSU() {
// allowLog
allow("logd", "su", "dir", "search");
allow("logd", "su", "file", "read");
allow("logd", "su", "file", "open");
allow("logd", "su", "file", "getattr");
// suBackL0
allow("system_server", "su", "binder", "call");
allow("system_server", "su", "binder", "transfer");
// ES Explorer opens a sokcet
allow("untrusted_app", "su", "unix_stream_socket", "ioctl");
allow("untrusted_app", "su", "unix_stream_socket", "read");
allow("untrusted_app", "su", "unix_stream_socket", "getattr");
allow("untrusted_app", "su", "unix_stream_socket", "write");
allow("untrusted_app", "su", "unix_stream_socket", "setattr");
allow("untrusted_app", "su", "unix_stream_socket", "lock");
allow("untrusted_app", "su", "unix_stream_socket", "append");
allow("untrusted_app", "su", "unix_stream_socket", "bind");
allow("untrusted_app", "su", "unix_stream_socket", "connect");
allow("untrusted_app", "su", "unix_stream_socket", "getopt");
allow("untrusted_app", "su", "unix_stream_socket", "setopt");
allow("untrusted_app", "su", "unix_stream_socket", "shutdown");
allow("untrusted_app", "su", "unix_stream_socket", "connectto");
// Any domain is allowed to send su "sigchld"
allow(ALL, "su", "process", "sigchld");
// uNetworkL0
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attradd("su", "netdomain");
attradd("su", "bluetoothdomain");
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// suBackL6
allow("surfaceflinger", "app_data_file", "dir", ALL);
allow("surfaceflinger", "app_data_file", "file", ALL);
allow("surfaceflinger", "app_data_file", "lnk_file", ALL);
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attradd("surfaceflinger", "mlstrustedsubject");
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// suMiscL6
if (exists("audioserver"))
allow("audioserver", "audioserver", "process", "execmem");
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}
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void su_rules() {
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// Samsung specific
// Prevent system from loading policy
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if(exists("knox_system_app"))
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samsung();
// Create domains if they don't exist
if (!exists("su"))
create("su");
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permissive("su");
if (!exists("su_device"))
create("su_device");
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enforce("su_device");
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// Patch su to everything
allow("su", ALL, ALL, ALL);
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// Autotransition su's socket to su_device
add_transition("su", "device", "file", "su_device");
add_transition("su", "device", "dir", "su_device");
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allow("su_device", "tmpfs", "filesystem", "associate");
// Transition from untrusted_app to su_client
allowSuClient("shell");
allowSuClient("untrusted_app");
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allowSuClient("system_app");
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allowSuClient("platform_app");
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if (exists("priv_app"))
allowSuClient("priv_app");
if (exists("ssd_tool"))
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allowSuClient("ssd_tool");
// Allow init to execute su daemon/transition
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allow("init", "su", "process", "transition");
allow("init", "su", "process", "rlimitinh");
allow("init", "su", "process", "siginh");
allow("init", "su", "process", "noatsecure");
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suRights();
otherToSU();
// Need to set su_device/su as trusted to be accessible from other categories
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attradd("su_device", "mlstrustedobject");
attradd("su", "mlstrustedsubject");
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// Allow chcon to anything
allow(ALL, "labeledfs", "filesystem", "associate");
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}
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// Minimal to run Magisk script before live patching
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void min_rules() {
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if (!exists("su"))
create("su");
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permissive("su");
permissive("init");
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attradd("su", "mlstrustedsubject");
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allow("kernel", "su", "fd", "use");
allow("init", "su", "process", ALL);
allow("init", "system_file", "dir", ALL);
allow("init", "system_file", "lnk_file", ALL);
allow("init", "system_file", "file", ALL);
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allow("su", "property_socket", "sock_file", "write");
allow("su", "shell_exec", "file", ALL);
allow("su", "init", "unix_stream_socket", "connectto");
allow("su", "su", "unix_dgram_socket", ALL);
allow("su", "su", "unix_stream_socket", ALL);
allow("su", "su", "process", ALL);
allow("su", "su", "capability", ALL);
allow("su", "su", "file", ALL);
allow("su", "su", "fifo_file", ALL);
allow("su", "su", "lnk_file", ALL);
allow("su", "su", "dir", ALL);
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// vold, bootanim, surfaceflinger might require mounts in multirom
allow("su", "vold_exec", "file", ALL);
allow("su", "bootanim_exec", "file", ALL);
allow("su", "surfaceflinger_exec", "file", ALL);
// Access toolbox/toybox tools
allow("su", "toolbox_exec", "file", ALL);
allow("su", "toolbox_exec", "lnk_file", ALL);
// For /dev
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allow("su", "device", "file", ALL);
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allow("su", "device", "fifo_file", ALL);
allow("su", "device", "lnk_file", ALL);
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allow("su", "device", "dir", ALL);
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// For rootfs
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allow("su", "rootfs", "file", ALL);
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allow("su", "rootfs", "fifo_file", ALL);
allow("su", "rootfs", "lnk_file", ALL);
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allow("su", "rootfs", "dir", ALL);
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// For system/cache/data files
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allow("su", "system_file", "file", ALL);
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allow("su", "system_file", "fifo_file", ALL);
allow("su", "system_file", "lnk_file", ALL);
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allow("su", "system_file", "dir", ALL);
allow("su", "system_data_file", "file", ALL);
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allow("su", "system_data_file", "fifo_file", ALL);
allow("su", "system_data_file", "lnk_file", ALL);
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allow("su", "system_data_file", "dir", ALL);
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allow("su", "cache_file", "file", ALL);
allow("su", "cache_file", "fifo_file", ALL);
allow("su", "cache_file", "lnk_file", ALL);
allow("su", "cache_file", "dir", ALL);
// For sepolicy live patching
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allow("su", "kernel", "security", "read_policy");
allow("su", "kernel", "security", "load_policy");
allow("su", "selinuxfs", "file", ALL);
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// For detecting current mount status
allow("su", "storage_file", "file", ALL);
allow("su", "storage_file", "fifo_file", ALL);
allow("su", "storage_file", "lnk_file", ALL);
allow("su", "storage_file", "dir", ALL);
allow("su", "sysfs", "file", ALL);
allow("su", "sysfs", "fifo_file", ALL);
allow("su", "sysfs", "lnk_file", ALL);
allow("su", "sysfs", "dir", ALL);
allow("su", "block_device", "file", ALL);
allow("su", "block_device", "fifo_file", ALL);
allow("su", "block_device", "lnk_file", ALL);
allow("su", "block_device", "dir", ALL);
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// Xposed
allow("untrusted_app", "untrusted_app", "capability", "setgid");
allow("system_server", "dex2oat_exec", "file", ALL);
// SuperSU
allow("init", "system_file", "file", "execute_no_trans");
allow("init", "su", "fd", "use");
allow("init", "kernel", "security", "read_policy");
allow("init", "kernel", "security", "load_policy");
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}