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Remove Samsung sepcific patches and small refactoring

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topjohnwu
2017-11-29 06:09:35 +08:00
parent 8ee9984e4e
commit d7a6127273
4 changed files with 87 additions and 120 deletions
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136
rules.c
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@ -1,70 +1,6 @@
#include "magiskpolicy.h"
#include "sepolicy.h"
void samsung() {
sepol_deny("init", "kernel", "security", "load_policy");
sepol_deny("policyloader_app", "security_spota_file", "dir", "read");
sepol_deny("policyloader_app", "security_spota_file", "dir", "write");
sepol_deny("policyloader_app", "security_spota_file", "file", "read");
sepol_deny("policyloader_app", "security_spota_file", "file", "write");
sepol_deny("system_server", "security_spota_file", "dir", "read");
sepol_deny("system_server", "security_spota_file", "dir", "write");
sepol_deny("system_server", "security_spota_file", "file", "read");
sepol_deny("system_server", "security_spota_file", "file", "write");
sepol_deny("system_app", "security_spota_file", "dir", "read");
sepol_deny("system_app", "security_spota_file", "dir", "write");
sepol_deny("system_app", "security_spota_file", "file", "read");
sepol_deny("system_app", "security_spota_file", "file", "write");
sepol_deny("installd", "security_spota_file", "dir", "read");
sepol_deny("installd", "security_spota_file", "dir", "write");
sepol_deny("installd", "security_spota_file", "file", "read");
sepol_deny("installd", "security_spota_file", "file", "write");
sepol_deny("init", "security_spota_file", "dir", "read");
sepol_deny("init", "security_spota_file", "dir", "write");
sepol_deny("init", "security_spota_file", "file", "read");
sepol_deny("init", "security_spota_file", "file", "write");
sepol_deny("ueventd", "security_spota_file", "dir", "read");
sepol_deny("ueventd", "security_spota_file", "dir", "write");
sepol_deny("ueventd", "security_spota_file", "file", "read");
sepol_deny("ueventd", "security_spota_file", "file", "write");
sepol_deny("runas", "security_spota_file", "dir", "read");
sepol_deny("runas", "security_spota_file", "dir", "write");
sepol_deny("runas", "security_spota_file", "file", "read");
sepol_deny("runas", "security_spota_file", "file", "write");
sepol_deny("drsd", "security_spota_file", "dir", "read");
sepol_deny("drsd", "security_spota_file", "dir", "write");
sepol_deny("drsd", "security_spota_file", "file", "read");
sepol_deny("drsd", "security_spota_file", "file", "write");
sepol_deny("debuggerd", "security_spota_file", "dir", "read");
sepol_deny("debuggerd", "security_spota_file", "dir", "write");
sepol_deny("debuggerd", "security_spota_file", "file", "read");
sepol_deny("debuggerd", "security_spota_file", "file", "write");
sepol_deny("vold", "security_spota_file", "dir", "read");
sepol_deny("vold", "security_spota_file", "dir", "write");
sepol_deny("vold", "security_spota_file", "file", "read");
sepol_deny("vold", "security_spota_file", "file", "write");
sepol_deny("zygote", "security_spota_file", "dir", "read");
sepol_deny("zygote", "security_spota_file", "dir", "write");
sepol_deny("zygote", "security_spota_file", "file", "read");
sepol_deny("zygote", "security_spota_file", "file", "write");
sepol_deny("auditd", "security_spota_file", "dir", "read");
sepol_deny("auditd", "security_spota_file", "dir", "write");
sepol_deny("auditd", "security_spota_file", "file", "read");
sepol_deny("auditd", "security_spota_file", "file", "write");
sepol_deny("servicemanager", "security_spota_file", "dir", "read");
sepol_deny("servicemanager", "security_spota_file", "dir", "write");
sepol_deny("servicemanager", "security_spota_file", "file", "read");
sepol_deny("servicemanager", "security_spota_file", "file", "write");
sepol_deny("itsonbs", "security_spota_file", "dir", "read");
sepol_deny("itsonbs", "security_spota_file", "dir", "write");
sepol_deny("itsonbs", "security_spota_file", "file", "read");
sepol_deny("itsonbs", "security_spota_file", "file", "write");
sepol_deny("commonplatformappdomain", "security_spota_file", "dir", "read");
sepol_deny("commonplatformappdomain", "security_spota_file", "dir", "write");
sepol_deny("commonplatformappdomain", "security_spota_file", "file", "read");
sepol_deny("commonplatformappdomain", "security_spota_file", "file", "write");
}
void allowSuClient(char *target) {
sepol_allow(target, "rootfs", "file", ALL);
sepol_allow(target, "rootfs", "lnk_file", ALL);
@ -149,10 +85,19 @@ void otherToSU() {
sepol_allow("surfaceflinger", "su", "binder", "call");
sepol_allow("surfaceflinger", "su", "fd", "use");
sepol_allow("debuggerd", "su", "process", "ptrace");
// dumpsys
sepol_allow(ALL, "su", "fd", "use");
sepol_allow(ALL, "su", "fifo_file", "write");
sepol_allow(ALL, "su", "fifo_file", "read");
sepol_allow(ALL, "su", "fifo_file", "open");
sepol_allow(ALL, "su", "fifo_file", "getattr");
}
// Minimal boot image patch, Samsung requires these patches
void sepol_min_rules() {
void sepol_magisk_rules() {
// First prevent anything to change sepolicy except ourselves
sepol_deny(ALL, "kernel", "security", "load_policy");
if (!sepol_exists("su"))
sepol_create("su");
if (!sepol_exists("su_device"))
@ -163,7 +108,7 @@ void sepol_min_rules() {
sepol_attradd("su", "mlstrustedsubject");
sepol_attradd("su_device", "mlstrustedobject");
// Let magiskinit daemon monitor and transit to su
// Allow magiskinit daemon to run and run in su context
sepol_allow("kernel", "device", "dir", ALL);
sepol_allow("kernel", "device", "file", ALL);
sepol_allow("kernel", "su", "unix_stream_socket", "connectto");
@ -177,11 +122,6 @@ void sepol_min_rules() {
sepol_allow("init", "system_file", "lnk_file", ALL);
sepol_allow("init", "system_file", "file", ALL);
// Samsung specific
// Prevent system from loading policy
if(sepol_exists("knox_system_app"))
samsung();
// Shell, prop management, simple su rights, logs
sepol_allow("su", "property_socket", "sock_file", "write");
sepol_allow("su", "properties_device", "file", "write");
@ -228,12 +168,34 @@ void sepol_min_rules() {
sepol_allow("su", "selinuxfs", "file", "open");
sepol_allow("su", "selinuxfs", "file", "write");
// Allow these client to access su
allowSuClient("shell");
allowSuClient("untrusted_app");
allowSuClient("system_app");
allowSuClient("platform_app");
if (sepol_exists("priv_app"))
allowSuClient("priv_app");
if (sepol_exists("ssd_tool"))
allowSuClient("ssd_tool");
if (sepol_exists("untrusted_app_25"))
allowSuClient("untrusted_app_25");
// Some superuser stuffs
suRights();
otherToSU();
// For mounting loop devices and mirrors
sepol_allow("su", "kernel", "process", "setsched");
sepol_allow("su", "labeledfs", "filesystem", "mount");
sepol_allow("su", "labeledfs", "filesystem", "unmount");
sepol_allow("kernel", ALL, "file", "read");
// Allow su to do anything to any files/dir/links
sepol_allow("su", ALL, "file", ALL);
sepol_allow("su", ALL, "dir", ALL);
sepol_allow("su", ALL, "lnk_file", ALL);
sepol_allow("su", ALL, "blk_file", ALL);
// For changing attributes
sepol_allow("rootfs", "tmpfs", "filesystem", "associate");
@ -248,33 +210,3 @@ void sepol_min_rules() {
}
}
void sepol_med_rules() {
sepol_min_rules();
// Allow su to do anything to any files/dir/links
sepol_allow("su", ALL, "file", ALL);
sepol_allow("su", ALL, "dir", ALL);
sepol_allow("su", ALL, "lnk_file", ALL);
sepol_allow("su", ALL, "blk_file", ALL);
// Allow these client to access su
allowSuClient("shell");
allowSuClient("untrusted_app");
allowSuClient("system_app");
allowSuClient("platform_app");
if (sepol_exists("priv_app"))
allowSuClient("priv_app");
if (sepol_exists("ssd_tool"))
allowSuClient("ssd_tool");
if (sepol_exists("untrusted_app_25"))
allowSuClient("untrusted_app_25");
suRights();
otherToSU();
}
void sepol_full_rules() {
// Patch su to everything
sepol_allow("su", ALL, ALL, ALL);
}