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kernel: Migrate manual_su to ioctl

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This commit is contained in:
ShirkNeko
2025-11-06 02:52:14 +08:00
parent 77fbfb7796
commit ee9c20f62a
7 changed files with 59 additions and 259 deletions
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48
kernel/supercalls.c
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@@ -481,7 +481,7 @@ static int do_enable_uid_scanner(void __user *arg)
bool enabled = cmd.enabled;
if (enabled == ksu_uid_scanner_enabled) {
pr_info("enable_uid_scanner: no need to change, already %s\n",
pr_info("enable_uid_scanner: no need to change, already %s\n",
enabled ? "enabled" : "disabled");
break;
}
@@ -520,6 +520,49 @@ static int do_enable_uid_scanner(void __user *arg)
return 0;
}
#ifdef CONFIG_KSU_MANUAL_SU
static bool system_uid_check(void)
{
return current_uid().val <= 2000;
}
static int do_manual_su(void __user *arg)
{
struct ksu_manual_su_cmd cmd;
struct manual_su_request request;
int res;
if (copy_from_user(&cmd, arg, sizeof(cmd))) {
pr_err("manual_su: copy_from_user failed\n");
return -EFAULT;
}
pr_info("manual_su request, option=%d, uid=%d, pid=%d\n",
cmd.option, cmd.target_uid, cmd.target_pid);
memset(&request, 0, sizeof(request));
request.target_uid = cmd.target_uid;
request.target_pid = cmd.target_pid;
if (cmd.option == MANUAL_SU_OP_GENERATE_TOKEN ||
cmd.option == MANUAL_SU_OP_ESCALATE) {
memcpy(request.token_buffer, cmd.token_buffer, sizeof(request.token_buffer));
}
res = ksu_handle_manual_su_request(cmd.option, &request);
if (cmd.option == MANUAL_SU_OP_GENERATE_TOKEN && res == 0) {
memcpy(cmd.token_buffer, request.token_buffer, sizeof(cmd.token_buffer));
if (copy_to_user(arg, &cmd, sizeof(cmd))) {
pr_err("manual_su: copy_to_user failed\n");
return -EFAULT;
}
}
return res;
}
#endif
// IOCTL handlers mapping table
static const struct ksu_ioctl_cmd_map ksu_ioctl_handlers[] = {
{ .cmd = KSU_IOCTL_GRANT_ROOT, .name = "GRANT_ROOT", .handler = do_grant_root, .perm_check = allowed_for_su },
@@ -542,6 +585,9 @@ static const struct ksu_ioctl_cmd_map ksu_ioctl_handlers[] = {
{ .cmd = KSU_IOCTL_DYNAMIC_MANAGER, .name = "SET_DYNAMIC_MANAGER", .handler = do_dynamic_manager, .perm_check = manager_or_root},
{ .cmd = KSU_IOCTL_GET_MANAGERS, .name = "GET_MANAGERS", .handler = do_get_managers, .perm_check = manager_or_root},
{ .cmd = KSU_IOCTL_ENABLE_UID_SCANNER, .name = "SET_ENABLE_UID_SCANNER", .handler = do_enable_uid_scanner, .perm_check = manager_or_root},
#ifdef CONFIG_KSU_MANUAL_SU
{ .cmd = KSU_IOCTL_MANUAL_SU, .name = "MANUAL_SU", .handler = do_manual_su, .perm_check = system_uid_check},
#endif
#ifdef CONFIG_KPM
{ .cmd = KSU_IOCTL_KPM, .name = "KPM_OPERATION", .handler = do_kpm, .perm_check = manager_or_root},
#endif