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fix lot (#518)

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* refact: use feature subsystem

* use 64bit feature

* fix

* add fixme

* add feature max to get_info

* use 32bit feature id

* allow root to get/set feature

* more clean perm_check functions

* fix

* add feature command to ksud

kernel: do not expose perm checker

* fix security_task_fix_setuid_handler_pre

* add android16-6.12 ci

* manager: add kernel_umount switch

Co-authored-by: YuKongA <70465933+YuKongA@users.noreply.github.com>

* manager: Reinstate the LKM selection function

* kernel: add name and print command value

- Optimise sulog log display

Co-authored-by: Ylarod <me@ylarod.cn>
Co-authored-by: ShirkNeko <109797057+ShirkNeko@users.noreply.github.com>

* fix

* ksud: clippy

---------

Co-authored-by: Ylarod <me@ylarod.cn>
Co-authored-by: YuKongA <70465933+YuKongA@users.noreply.github.com>
Co-authored-by: weishu <twsxtd@gmail.com>
This commit is contained in:
ShirkNeko
2025-11-02 20:01:24 +08:00
committed by GitHub
parent 00de4e1c64
commit 47bcc956a3
26 changed files with 963 additions and 852 deletions
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42
userspace/ksud/src/ksucalls.rs
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@@ -8,11 +8,13 @@ const EVENT_POST_FS_DATA: u32 = 1;
const EVENT_BOOT_COMPLETED: u32 = 2;
const EVENT_MODULE_MOUNTED: u32 = 3;
const KSU_IOCTL_GRANT_ROOT: u32 = 0x4B01; // _IO('K', 1)
const KSU_IOCTL_GRANT_ROOT: u32 = 0x00004b01; // _IO('K', 1)
const KSU_IOCTL_GET_INFO: u32 = 0x80084b02; // _IOR('K', 2, struct ksu_get_info_cmd)
const KSU_IOCTL_REPORT_EVENT: u32 = 0x40044b03; // _IOW('K', 3, struct ksu_report_event_cmd)
const KSU_IOCTL_REPORT_EVENT: u32 = 0x40084b03; // _IOW('K', 3, struct ksu_report_event_cmd)
const KSU_IOCTL_SET_SEPOLICY: u32 = 0xc0104b04; // _IOWR('K', 4, struct ksu_set_sepolicy_cmd)
const KSU_IOCTL_CHECK_SAFEMODE: u32 = 0x80014b05; // _IOR('K', 5, struct ksu_check_safemode_cmd)
const KSU_IOCTL_GET_FEATURE: u32 = 0xc00c4b0d; // _IOWR('K', 13, struct ksu_get_feature_cmd)
const KSU_IOCTL_SET_FEATURE: u32 = 0x40084b0e; // _IOW('K', 14, struct ksu_set_feature_cmd)
#[repr(C)]
#[derive(Clone, Copy, Default)]
@@ -39,6 +41,21 @@ struct CheckSafemodeCmd {
in_safe_mode: u8,
}
#[repr(C)]
#[derive(Clone, Copy, Default)]
struct GetFeatureCmd {
feature_id: u32,
value: u64,
supported: u8,
}
#[repr(C)]
#[derive(Clone, Copy, Default)]
struct SetFeatureCmd {
feature_id: u32,
value: u64,
}
// Global driver fd cache
#[cfg(any(target_os = "linux", target_os = "android"))]
static DRIVER_FD: OnceLock<RawFd> = OnceLock::new();
@@ -183,4 +200,23 @@ pub fn set_sepolicy(cmd: &SetSepolicyCmd) -> std::io::Result<()> {
let mut ioctl_cmd = *cmd;
ksuctl(KSU_IOCTL_SET_SEPOLICY, &mut ioctl_cmd as *mut _)?;
Ok(())
}
}
/// Get feature value and support status from kernel
/// Returns (value, supported)
pub fn get_feature(feature_id: u32) -> std::io::Result<(u64, bool)> {
let mut cmd = GetFeatureCmd {
feature_id,
value: 0,
supported: 0,
};
ksuctl(KSU_IOCTL_GET_FEATURE, &mut cmd as *mut _)?;
Ok((cmd.value, cmd.supported != 0))
}
/// Set feature value in kernel
pub fn set_feature(feature_id: u32, value: u64) -> std::io::Result<()> {
let mut cmd = SetFeatureCmd { feature_id, value };
ksuctl(KSU_IOCTL_SET_FEATURE, &mut cmd as *mut _)?;
Ok(())
}