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kernel: Add a UID blacklist feature to restrict the operational permissions of specific users

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ShirkNeko
2025-10-23 02:08:45 +08:00
parent bbb2748494
commit d3f8c128da
3 changed files with 214 additions and 120 deletions
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6
kernel/core_hook.c
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@@ -485,16 +485,12 @@ static void sulog_prctl_cmd(uid_t uid, unsigned long cmd)
int ksu_handle_prctl(int option, unsigned long arg2, unsigned long arg3,
unsigned long arg4, unsigned long arg5)
{
// if success, we modify the arg5 as result!
bool is_manual_su_cmd = false;
u32 *result = (u32 *)arg5;
u32 reply_ok = KERNEL_SU_OPTION;
uid_t current_uid_val = current_uid().val;
sulog_prctl_cmd(current_uid().val, arg2);
#ifdef CONFIG_KSU_MANUAL_SU
is_manual_su_cmd = (arg2 == CMD_SU_ESCALATION_REQUEST ||
arg2 == CMD_ADD_PENDING_ROOT);
@@ -526,6 +522,8 @@ skip_check:
bool from_root = !current_uid().val;
bool from_manager = is_manager();
sulog_prctl_cmd(current_uid().val, arg2);
if (!from_root && !from_manager
&& !(is_manual_su_cmd ? is_system_uid():
(is_allow_su() && is_system_bin_su()))) {