c93cf58f48
* Cherry-picked range: (kernel)
ebea31daa8..6915b62b9a
* Also merged unmerged pr:
https://github.com/tiann/KernelSU/pull/ 2909
Co-authored-by: Ylarod <me@ylarod.cn>
Co-authored-by: 5ec1cff <56485584+5ec1cff@users.noreply.github.com>
Co-authored-by: backslashxx <118538522+backslashxx@users.noreply.github.com>
Co-authored-by: u9521 <63995396+u9521@users.noreply.github.com>
Co-authored-by: Wang Han <416810799@qq.com>
85 lines
2.6 KiB
C
85 lines
2.6 KiB
C
#ifndef __KSU_H_KERNEL_COMPAT
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#define __KSU_H_KERNEL_COMPAT
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#include <linux/fs.h>
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#include <linux/version.h>
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#include <linux/task_work.h>
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#include "ss/policydb.h"
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#include "linux/key.h"
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/*
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* Adapt to Huawei HISI kernel without affecting other kernels ,
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* Huawei Hisi Kernel EBITMAP Enable or Disable Flag ,
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* From ss/ebitmap.h
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*/
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#if (LINUX_VERSION_CODE >= KERNEL_VERSION(4, 9, 0)) && \
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(LINUX_VERSION_CODE < KERNEL_VERSION(4, 10, 0)) || \
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(LINUX_VERSION_CODE >= KERNEL_VERSION(4, 14, 0)) && \
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(LINUX_VERSION_CODE < KERNEL_VERSION(4, 15, 0))
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#ifdef HISI_SELINUX_EBITMAP_RO
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#define CONFIG_IS_HW_HISI
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#endif
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#endif
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// Checks for UH, KDP and RKP
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#ifdef SAMSUNG_UH_DRIVER_EXIST
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#if defined(CONFIG_UH) || defined(CONFIG_KDP) || defined(CONFIG_RKP)
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#error "CONFIG_UH, CONFIG_KDP and CONFIG_RKP is enabled! Please disable or remove it before compile a kernel with KernelSU!"
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#endif
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#endif
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extern long ksu_strncpy_from_user_nofault(char *dst,
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const void __user *unsafe_addr,
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long count);
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extern struct file *ksu_filp_open_compat(const char *filename, int flags,
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umode_t mode);
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extern ssize_t ksu_kernel_read_compat(struct file *p, void *buf, size_t count,
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loff_t *pos);
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extern ssize_t ksu_kernel_write_compat(struct file *p, const void *buf,
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size_t count, loff_t *pos);
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extern long ksu_copy_from_user_nofault(void *dst, const void __user *src, size_t size);
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/*
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* ksu_copy_from_user_retry
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* try nofault copy first, if it fails, try with plain
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* paramters are the same as copy_from_user
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* 0 = success
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*/
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static long ksu_copy_from_user_retry(void *to,
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const void __user *from, unsigned long count)
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{
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long ret = ksu_copy_from_user_nofault(to, from, count);
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if (likely(!ret))
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return ret;
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// we faulted! fallback to slow path
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return copy_from_user(to, from, count);
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}
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#if LINUX_VERSION_CODE < KERNEL_VERSION(4, 10, 0) || \
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defined(CONFIG_IS_HW_HISI) || defined(CONFIG_KSU_ALLOWLIST_WORKAROUND)
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extern struct key *init_session_keyring;
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#endif
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#if LINUX_VERSION_CODE >= KERNEL_VERSION(5, 0, 0)
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#define ksu_access_ok(addr, size) access_ok(addr, size)
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#else
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#define ksu_access_ok(addr, size) access_ok(VERIFY_READ, addr, size)
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#endif
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// Linux >= 5.7
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// task_work_add (struct, struct, enum)
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#if LINUX_VERSION_CODE >= KERNEL_VERSION(5, 7, 0)
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#define ksu_task_work_add(tsk, cb, notify) task_work_add(tsk, cb, notify)
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#else
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// Linux pre-5.7
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// task_work_add (struct, struct, bool)
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#define ksu_task_work_add(tsk, cb, notify) task_work_add(tsk, cb, notify)
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// Decoy, so it wouldn't complain.
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#ifndef TWA_RESUME
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#define TWA_RESUME true
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#endif
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#endif
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#endif
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