host
2be69af92c
part 4 缺陷 2:volatile 空根缺 /app 与 /etc 关键文件
RETEST3 缺陷 2:--volatile=yes 下单元根是基本空的 tmpfs,
/app、/etc/resolv.conf、/etc/hosts、/etc/ssl/certs 全无,
执行器单元路径一律 ENOENT、DNS/TLS 不可用。
- build_nspawn_argv:固定只读绑 --bind-ro=/app 与
--bind-ro=/etc/ssl/certs;新增 extra_ro_binds 参数
(单元专属 resolv.conf/hosts 由 run_cell 传进来)。
- prepare_cell_files():按客机有效 DNS 生成单元专属
resolv.conf/hosts(/run/chv/resolv.conf.<machine>、
hosts.<machine>,0644——单元 root 映射为客机 uid 1000,
0600 的 root 文件单元内读不到;DNS/hosts 不含秘密)。
客机 resolv.conf 可能是 systemd-resolved stub
(127.0.0.53),单元内无 resolved,直接绑 stub 即 DNS
全灭,故过滤 stub 后备选 /run/systemd/resolve/resolv.conf,
两处都没有即大声失败。nsswitch.conf 故意不绑(客机版
可能含 resolve 模块;glibc 默认 files+dns 正是单元需要的)。
新测试:CellFilesTest、CellPart4ArgvTest(绑定两法)。
run_cell 接线在缺陷 3 的重写里做。
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