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kernel: Apply the susfs patch

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Co-authored-by: simonpunk <simonpunk2016@gmail.com>
Co-authored-by: ShirkNeko <109797057+ShirkNeko@users.noreply.github.com>
This commit is contained in:
ShirkNeko
2025-11-14 18:36:04 +08:00
parent 4920877dd8
commit 4c04508267
20 changed files with 982 additions and 77 deletions
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25
kernel/syscall_hook_manager.c
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@@ -259,28 +259,28 @@ int ksu_handle_init_mark_tracker(const char __user **filename_user)
return 0;
}
#ifdef CONFIG_KSU_MANUAL_SU
#include "manual_su.h"
static inline void ksu_handle_task_alloc(struct pt_regs *regs)
{
ksu_try_escalate_for_uid(current_uid().val);
}
#endif
#ifdef CONFIG_HAVE_SYSCALL_TRACEPOINTS
// Generic sys_enter handler that dispatches to specific handlers
static void ksu_sys_enter_handler(void *data, struct pt_regs *regs, long id)
{
if (unlikely(check_syscall_fastpath(id))) {
#ifndef CONFIG_KSU_SUSFS
#ifdef KSU_TP_HOOK
if (ksu_su_compat_enabled) {
// Handle newfstatat
if (id == __NR_newfstatat) {
int *dfd = (int *)&PT_REGS_PARM1(regs);
const char __user **filename_user =
(const char __user **)&PT_REGS_PARM2(regs);
int *flags = (int *)&PT_REGS_SYSCALL_PARM4(regs);
ksu_handle_stat(dfd, filename_user, flags);
#if LINUX_VERSION_CODE >= KERNEL_VERSION(6, 1, 0) && defined(CONFIG_KSU_SUSFS)
// Kernel 6.1+ with SUSFS uses struct filename **
struct filename **filename_ptr = (struct filename **)&PT_REGS_PARM2(regs);
ksu_handle_stat(dfd, filename_ptr, flags);
#else
// Older kernel or no SUSFS: use const char __user **
const char __user **filename_user = (const char __user **)&PT_REGS_PARM2(regs);
ksu_handle_stat(dfd, filename_user, flags);
#endif
return;
}
@@ -316,11 +316,6 @@ static void ksu_sys_enter_handler(void *data, struct pt_regs *regs, long id)
ksu_handle_setresuid(ruid, euid, suid);
return;
}
#ifdef CONFIG_KSU_MANUAL_SU
// Handle task_alloc via clone/fork
if (id == __NR_clone || id == __NR_clone3)
return ksu_handle_task_alloc(regs);
#endif
}
}