fdf5e7104e
* refactor: kpm: memory management migrate to sukisu side * fix: build warning in some gki2 device fix stack frame size warning (maybe) in gki2 device, specialy in ShirkNeko's device * chore: use pr_info instead of printk * feat: check the validity of pointers sent from user space Sometimes, ksud or other root processes might request a kpm ioctl, but data incorrectly, such as invalid pointer, which cause the kernel to crash. If the request is made by ksud at boot time, the situation is even worse, as it can cause the system to enter the boot loop. Therefore, I believe we need to check pointer integrity in kernel space to fix this problem. --------- Co-authored-by: Saksham <typeflu@gmail.com> Co-authored-by: ShirkNeko <109797057+ShirkNeko@users.noreply.github.com>
71 lines
1.4 KiB
C
71 lines
1.4 KiB
C
#ifndef __SUKISU_KPM_H
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#define __SUKISU_KPM_H
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#include <linux/types.h>
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#include <linux/ioctl.h>
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struct ksu_kpm_cmd {
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__aligned_u64 __user control_code;
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__aligned_u64 __user arg1;
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__aligned_u64 __user arg2;
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__aligned_u64 __user result_code;
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};
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int sukisu_handle_kpm(unsigned long control_code, unsigned long arg3, unsigned long arg4, unsigned long result_code);
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int sukisu_is_kpm_control_code(unsigned long control_code);
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int do_kpm(void __user *arg);
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#define KSU_IOCTL_KPM _IOC(_IOC_READ|_IOC_WRITE, 'K', 200, 0)
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/* KPM Control Code */
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#define CMD_KPM_CONTROL 1
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#define CMD_KPM_CONTROL_MAX 10
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/* Control Code */
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/*
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* prctl(xxx, 1, "PATH", "ARGS")
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* success return 0, error return -N
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*/
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#define SUKISU_KPM_LOAD 1
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/*
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* prctl(xxx, 2, "NAME")
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* success return 0, error return -N
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*/
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#define SUKISU_KPM_UNLOAD 2
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/*
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* num = prctl(xxx, 3)
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* error return -N
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* success return +num or 0
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*/
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#define SUKISU_KPM_NUM 3
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/*
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* prctl(xxx, 4, Buffer, BufferSize)
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* success return +out, error return -N
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*/
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#define SUKISU_KPM_LIST 4
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/*
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* prctl(xxx, 5, "NAME", Buffer[256])
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* success return +out, error return -N
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*/
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#define SUKISU_KPM_INFO 5
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/*
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* prctl(xxx, 6, "NAME", "ARGS")
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* success return KPM's result value
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* error return -N
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*/
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#define SUKISU_KPM_CONTROL 6
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/*
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* prctl(xxx, 7, buffer, bufferSize)
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* success return KPM's result value
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* error return -N
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*/
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#define SUKISU_KPM_VERSION 7
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#endif
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