ef399712dc
Tracepoint is a predefined hook point in the kernel, compared to Kprobe, it is more stable and has lower performance overhead, although compatibility is relatively poor, it is still worth trying By the way, we have also included the config definitions related to hook types in Kconfig, to enhance cleanliness These patches is based on https://github.com/backslashxx/KernelSU/issues/5 Co-authored-by: Cloud_Yun <1770669041@qq.com> Co-authored-by: Prslc <prslc113@gmail.com>
156 lines
3.6 KiB
C
156 lines
3.6 KiB
C
#include <linux/export.h>
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#include <linux/fs.h>
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#include <linux/kobject.h>
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#include <linux/module.h>
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#include <linux/workqueue.h>
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#include "allowlist.h"
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#include "arch.h"
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#include "core_hook.h"
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#include "klog.h" // IWYU pragma: keep
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#include "ksu.h"
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#include "throne_tracker.h"
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#ifdef CONFIG_KSU_SUSFS
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#include <linux/susfs.h>
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#endif
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#ifdef CONFIG_KSU_CMDLINE
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#include <linux/init.h>
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// use get_ksu_state()!
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unsigned int enable_kernelsu = 1; // enabled by default
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static int __init read_kernelsu_state(char *s)
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{
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if (s)
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enable_kernelsu = simple_strtoul(s, NULL, 0);
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return 1;
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}
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__setup("kernelsu.enabled=", read_kernelsu_state);
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bool get_ksu_state(void) { return enable_kernelsu >= 1; }
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#else
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bool get_ksu_state(void) { return true; }
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#endif /* CONFIG_KSU_CMDLINE */
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static struct workqueue_struct *ksu_workqueue;
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bool ksu_queue_work(struct work_struct *work)
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{
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return queue_work(ksu_workqueue, work);
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}
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extern int ksu_handle_execveat_sucompat(int *fd, struct filename **filename_ptr,
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void *argv, void *envp, int *flags);
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extern int ksu_handle_execveat_ksud(int *fd, struct filename **filename_ptr,
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void *argv, void *envp, int *flags);
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int ksu_handle_execveat(int *fd, struct filename **filename_ptr, void *argv,
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void *envp, int *flags)
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{
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ksu_handle_execveat_ksud(fd, filename_ptr, argv, envp, flags);
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return ksu_handle_execveat_sucompat(fd, filename_ptr, argv, envp,
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flags);
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}
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extern void ksu_sucompat_init();
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extern void ksu_sucompat_exit();
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extern void ksu_ksud_init();
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extern void ksu_ksud_exit();
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#ifdef CONFIG_KSU_TRACEPOINT_HOOK
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extern void ksu_trace_register();
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extern void ksu_trace_unregister();
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#endif
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int __init ksu_kernelsu_init(void)
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{
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pr_info("kernelsu.enabled=%d\n",
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get_ksu_state());
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#ifdef CONFIG_KSU_CMDLINE
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if (!get_ksu_state()) {
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pr_info_once("drivers is disabled.");
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return 0;
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}
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#endif
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#ifdef CONFIG_KSU_DEBUG
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pr_alert("*************************************************************");
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pr_alert("** NOTICE NOTICE NOTICE NOTICE NOTICE NOTICE NOTICE **");
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pr_alert("** **");
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pr_alert("** You are running KernelSU in DEBUG mode **");
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pr_alert("** **");
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pr_alert("** NOTICE NOTICE NOTICE NOTICE NOTICE NOTICE NOTICE **");
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pr_alert("*************************************************************");
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#endif
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#ifdef CONFIG_KSU_SUSFS
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susfs_init();
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#endif
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ksu_core_init();
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ksu_workqueue = alloc_ordered_workqueue("kernelsu_work_queue", 0);
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ksu_allowlist_init();
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ksu_throne_tracker_init();
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ksu_sucompat_init();
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#ifdef CONFIG_KSU_KPROBES_HOOK
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ksu_ksud_init();
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#else
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pr_alert("KPROBES is disabled, KernelSU may not work, please check https://kernelsu.org/guide/how-to-integrate-for-non-gki.html");
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#endif
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#ifdef CONFIG_KSU_TRACEPOINT_HOOK
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ksu_trace_register();
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#endif
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#ifdef MODULE
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#ifndef CONFIG_KSU_DEBUG
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kobject_del(&THIS_MODULE->mkobj.kobj);
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#endif
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#endif
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return 0;
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}
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void ksu_kernelsu_exit(void)
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{
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#ifdef CONFIG_KSU_CMDLINE
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if (!get_ksu_state()) {
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return;
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}
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#endif
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ksu_allowlist_exit();
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ksu_throne_tracker_exit();
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destroy_workqueue(ksu_workqueue);
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#ifdef CONFIG_KSU_KPROBES_HOOK
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ksu_ksud_exit();
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#endif
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#ifdef CONFIG_KSU_TRACEPOINT_HOOK
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ksu_trace_unregister();
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#endif
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ksu_sucompat_exit();
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ksu_core_exit();
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}
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module_init(ksu_kernelsu_init);
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module_exit(ksu_kernelsu_exit);
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MODULE_LICENSE("GPL");
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MODULE_AUTHOR("weishu");
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MODULE_DESCRIPTION("Android KernelSU");
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#include <linux/version.h>
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#if LINUX_VERSION_CODE >= KERNEL_VERSION(5, 0, 0)
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MODULE_IMPORT_NS(VFS_internal_I_am_really_a_filesystem_and_am_NOT_a_driver);
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#endif
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