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kernel: add wrapper for creds, refine disable_seccomp, revert some changes (#131)

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1. Wrapper for creds:
* Some older kernel does not have {.val}, so, for nicer compatibility support and clean code,
make some wrapper for credential use.
* After this change, do not use current_uid().val, instead, use ksu_current_uid(). For more
info, check kernel/include/ksu_creds.h.

2. Refine disable_seccomp (need to add k6.11+ support)
https://github.com/tiann/KernelSU/pull/2708
https://github.com/tiann/KernelSU/issues/2706

3. Revert "Handle unmount for isolated process correctly"
Reason: https://github.com/tiann/KernelSU/pull/2696#issuecomment-3181866301

4. consolidate most of the gaps

Co-authored-by: Wang Han <416810799@qq.com>
This commit is contained in:
M. Faris
2025-08-16 11:19:30 +07:00
committed by ShirkNeko
parent 665091f37d
commit ff6a68221f
11 changed files with 227 additions and 175 deletions
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39
kernel/include/ksu_creds.h Normal file
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@@ -0,0 +1,39 @@
/*
* KernelSU creds wrapper
*
* Provide a wrapper for a few credentials use (e.g current_uid().val),
* so it would be easier to maintain
* some older linux versions.
*/
#ifndef __KSU_H_CREDS
#define __KSU_H_CREDS
#include <linux/cred.h>
#include <linux/version.h>
#if (LINUX_VERSION_CODE >= KERNEL_VERSION(3, 5, 0) && \
defined(CONFIG_UIDGID_STRICT_TYPE_CHECKS)) || \
LINUX_VERSION_CODE >= KERNEL_VERSION(3, 14, 0)
#define ksu_cred_uid(x) ((x)->uid.val)
#define ksu_cred_suid(x) ((x)->suid.val)
#define ksu_cred_euid(x) ((x)->euid.val)
#define ksu_cred_fsuid(x) ((x)->fsuid.val)
#define ksu_cred_gid(x) ((x)->gid.val)
#define ksu_cred_fsgid(x) ((x)->fsgid.val)
#define ksu_cred_sgid(x) ((x)->sgid.val)
#define ksu_cred_egid(x) ((x)->egid.val)
#define ksu_current_uid() (current_uid().val)
#else
#define ksu_cred_uid(x) ((x)->uid)
#define ksu_cred_suid(x) ((x)->suid)
#define ksu_cred_euid(x) ((x)->euid)
#define ksu_cred_fsuid(x) ((x)->fsuid)
#define ksu_cred_gid(x) ((x)->gid)
#define ksu_cred_fsgid(x) ((x)->fsgid)
#define ksu_cred_sgid(x) ((x)->sgid)
#define ksu_cred_egid(x) ((x)->egid)
#define ksu_current_uid() (current_uid())
#endif
#endif