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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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7
kernel/kernel_compat.h
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@@ -31,6 +31,9 @@
extern long ksu_strncpy_from_user_nofault(char *dst,
const void __user *unsafe_addr,
long count);
extern long ksu_strncpy_from_user_retry(char *dst,
const void __user *unsafe_addr,
long count);
#if LINUX_VERSION_CODE < KERNEL_VERSION(4, 10, 0) || \
defined(CONFIG_IS_HW_HISI) || \
@@ -47,9 +50,9 @@ extern ssize_t ksu_kernel_write_compat(struct file *p, const void *buf,
size_t count, loff_t *pos);
#if LINUX_VERSION_CODE >= KERNEL_VERSION(5, 0, 0)
#define ksu_access_ok(addr, size) (access_ok(addr, size))
#define ksu_access_ok(addr, size) access_ok(addr, size)
#else
#define ksu_access_ok(addr, size) (access_ok(VERIFY_READ, addr, size))
#define ksu_access_ok(addr, size) access_ok(VERIFY_READ, addr, size)
#endif
#endif