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MeowOS-For-R3P2/patch_v2/meow_launcherd/test_overlay_gate.c
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AskaEth c730333776 fix(launcher): §310 追加两修——未冻结App锁屏输入穿透(独占触控) + 主界面应用名截断
真机 M6.3 反馈(bcef8e0 三连修复未好全,追加两问题):

P1 锁屏 PIN 输入穿透仍在(媒体保活 App 实时读 evdev)
  根因:媒体保活 App(播放中)从不 SIGSTOP(保 PCM),SDK 输入线程实时读 evdev,不走缓冲。
  bcef8e0 的「SIGCONT 排空」只作用于冻结 App;对未冻结 App,隔离全靠 /tmp/meow_notif_active
  让 SDK 排空——若 App 的 meow_ui.a 缺该排空(或节流窗内漏网),锁屏期触摸依旧抵达 App。
  修法:run_lock_screen() 与 lck_input_pin_modal() 打开 DEV_TOUCH 后 EVIOCGRAB 独占触控设备
  (真机 goodix 实测 EVIOCGRAB 返回 0)——抓取期事件只投递抓取者、不为其它 fd 缓冲/回放,
  故**任何**前台进程(冻结或未冻结)锁屏期都收不到触摸(真全模态)。失败时记日志降级
  (仍靠标记+SIGSTOP 隔离)。overlay_gate.h 增 overlay_keepalive_needs_grab 判据。

P2 主界面应用名只显示 5 字(「流媒体客户」式,半字残形)
  根因:app_launcher.c `strncpy(a->name, name, 16)` 仍把显示名硬截 16 字节——M6.3 只扩了
  name[49]+json_str 整序列,漏改此二处。UTF-8 下 16B = 5 汉字 + 「端」首字节 + 无 NUL,
  显示成「流媒体客户」+ 残形;main_menu.c menu_name_fit 按字节回退又停在半截字符、加 "..." 溢出。
  修法:新增 meow_utf8.h(meow_utf8_char_len / meow_utf8_copy_bounded,纯决策可单测)——
  app_launcher.c 两处 strncpy(16) 改 app_name_copy(=copy_bounded, 拷满 sizeof name=49);
  menu_name_fit 改整字符前进 + 预留省略号宽度(mfont 用「…」/点阵用 "..."),总宽 ≤ maxw,
  绝不劈开多字节字符。

新增 test_utf8_name.c(14 断言:整字符长/整序列有界拷贝,含 cap=16/17/12 边界不劈字)+
  test_overlay_gate.c 扩展(S1b 未冻结 App 靠 EVIOCGRAB 隔离 4 断言)。launcher 全量宿主回归
  + SDK 叠加/状态栏/输入回归全 PASS;mipsel 交叉 -Wall -Wextra 0 warning。
md5 56dac860841c3884b4322707246e22af(/usr/bin 只读,待固件打包 M6.4;fw_content.conf 未动)。
2026-09-02 08:13:55 +08:00

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/* test_overlay_gate.c — §310 三连 bug 的**纯决策**宿主单测(overlay_gate.h + lock_screen.h 谓词)。
*
* 覆盖三个症状对应的关闭/恢复决策,不依赖信号/设备/文件系统:
* S1 锁屏期触摸不穿透 → overlay_drain_required():App 被 SIGSTOP 过(非保活)必须在
* unlink /tmp/meow_notif_active 前先 SIGCONT + 排窗,让 SDK 输入线程
* 排空冻结期缓冲的 evdev 事件副本;OVERLAY_DRAIN_WINDOW_MS > SDK 200ms 节流。
* S2 解锁状态栏恢复 → overlay_force_sb_resync():解锁后必须强制 g_sb_mode_last=-1 重叠加,
* 不等 app 循环 1s 慢刷(消除「解锁回 App 无状态栏」残留)。
* S3 App 死亡触发主屏重绘 → lock_overlay_app_died_exit():锁屏叠加期 App 崩溃(僵尸)必须走
* 统一退出路径(交回 waitpid 循环回收 + run_menu 重绘主屏含状态栏)。
* S1b 未冻结 App 输入被排 → overlay_keepalive_needs_grab():媒体保活 App(保持运行、SDK 输入
* 线程实时读 evdev)在锁屏期必须靠 launcher EVIOCGRAB 独占触控设备 +
* 标记让 SDK 排空——而非冻结 App 的 SIGCONT 排空(drain_required=0)。
*
* 编译运行(在 patch_v2/meow_launcherd 下,无其它依赖):
* gcc -Wall -Wextra -o test_overlay_gate test_overlay_gate.c && ./test_overlay_gate
* 全 PASS -> exit 0。
*/
#include <stdio.h>
#include "overlay_gate.h"
#include "lock_screen.h"
static int g_pass = 0, g_fail = 0;
#define CHECK(cond, msg) do { \
if (cond) { g_pass++; printf("PASS %s\n", msg); } \
else { g_fail++; printf("FAIL %s\n", msg); } \
} while (0)
int main(void)
{
/* ---- S1 输入穿透:SIGSTOP 过的 App 关闭时必须先排空再 unlink ---- */
CHECK(overlay_drain_required(0) == 1, "S1 drain required (app was SIGSTOP/frozen)");
CHECK(overlay_drain_required(1) == 0, "S1 no drain needed (media keep-alive, never stopped)");
/* 排空窗必须大于 SDK overlay_input_suppressed 的 200ms 标记节流窗,保证恢复后确实重新 stat 到
* 标记再整批丢弃缓冲事件;此处断言契约不被踩线。 */
CHECK(OVERLAY_DRAIN_WINDOW_MS > 200, "S1 drain window > SDK 200ms throttle");
/* ---- S1b 未冻结(媒体保活)App 输入被排:靠 EVIOCGRAB 独占隔离,非 SIGCONT 排空 ----
* 保活 App 从不 SIGSTOP(保 PCM),SDK 输入线程实时读 evdev;launcher 只能靠 EVIOCGRAB 独占
* 触控设备(真机 goodix 已证 EVIOCGRAB 返回 0)使任何前台进程锁屏期收不到触摸。 */
CHECK(overlay_keepalive_needs_grab(1) == 1, "S1b keep-alive app needs EVIOCGRAB isolation");
CHECK(overlay_keepalive_needs_grab(0) == 0, "S1b frozen app -> SIGCONT drain, not grab");
/* 保活 App 隔离与冻结 App 排空互斥:一条路径而非两条。 */
CHECK(overlay_drain_required(1) == 0 && overlay_keepalive_needs_grab(1) == 1,
"S1b keep-alive: grab path (drain==0)");
CHECK(overlay_drain_required(0) == 1 && overlay_keepalive_needs_grab(0) == 0,
"S1b frozen: drain path (grab==0)");
/* ---- S2 解锁状态栏恢复:必须强制重同步 ---- */
CHECK(overlay_force_sb_resync() == 1, "S2 force status bar re-sync after unlock");
/* ---- S3 App 死亡触发主屏重绘:崩溃必须走统一退出路径 ---- */
CHECK(lock_overlay_app_died_exit(1) == 1, "S3 app died -> unified exit path (redraw home)");
CHECK(lock_overlay_app_died_exit(0) == 0, "S3 app alive -> normal restore");
/* ---- §310 锁屏叠加期中止谓词(lock_screen.h 纯判定)---- */
CHECK(lck_overlay_should_abort(0, 0) == 0, "S3 abort=0 (menu lock, no overlay pid)");
CHECK(lck_overlay_should_abort(0, 1) == 0, "S3 abort=0 (no overlay pid, zombie ignored)");
CHECK(lck_overlay_should_abort(4321, 0) == 0, "S3 abort=0 (overlay pid, app alive)");
CHECK(lck_overlay_should_abort(4321, 1) == 1, "S3 abort=1 (overlay pid + zombie -> abort lock)");
printf("\n%s (%d passed, %d failed)\n", g_fail ? "SOME TESTS FAILED" : "ALL PASS", g_pass, g_fail);
return g_fail ? 1 : 0;
}