fix: keep Type=forking behavior in dde-session-daemon-loader-wrapper

[felixonmars]

The systemd service was changed to Type=forking in ee600cd, but 1f4a441 changed the wrapper back to directly exec the original daemon, which hangs the systemd service indefinitely on Arch since we don't have deepin-security-loader.

Let's revert to the fork-like behavior to fix this.

Summary by Sourcery

Bug Fixes:

• Restore fork-like wrapper behavior so the Type=forking systemd service can start correctly without deepin-security-loader.

[sourcery-ai]

Reviewer's guide (collapsed on small PRs)

Reviewer's Guide

The wrapper is adjusted to fork the original daemon instead of directly replacing the wrapper process, preventing the Type=forking systemd unit from hanging on systems without deepin-security-loader.

File-Level Changes

Change	Details	Files
Restore fork-like wrapper behavior so the systemd service can complete startup with Type=forking even when deepin-security-loader is unavailable.	Change the wrapper’s daemon-launch behavior from direct execution back to forking/background execution. Preserve compatibility with the service’s existing Type=forking configuration.	misc/scripts/dde-session-daemon-loader-wrapper

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[sourcery-ai]

Hey - I've reviewed your changes and they look great!

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[deepin-ci-robot]

deepin pr auto review

🤖 AI 代码审查报告

总体评分： 92 分 (通过阈值: 70分)

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📊 总体评价

项目	结果
审查结论	代码审查通过
评分详情	代码变更目的明确，将 exec 替换为后台执行+exit 0 以适配 systemd Type=forking 行为。语法正确，逻辑清晰，无安全漏洞。存在2个功能性问题需关注：security-loader 路径仍使用 exec 可能与 Type=forking 不一致，以及 exit 0 未检查进程启动结果可能导致错误被静默吞掉。

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🔍 详细分析

1. 语法逻辑 ✅

评价： 良好 ✅ 通过

潜在问题：
✅ 未发现明显问题

建议： 1. 确认 security-loader 路径是否需要同步修改为 fork 行为 2. 如 deepin-security-loader 自身处理 fork，可添加注释说明

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2. 代码质量 ✅

评价： 良好 ✅ 通过

潜在问题：
✅ 未发现明显问题

建议： 1. 添加 $REAL_BINARY 存在性检查 2. 添加 exit 0 行为注释 3. 考虑对启动失败进行日志记录

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3. 代码性能 ✅

评价： 优秀 ✅ 通过

潜在问题：
✅ 未发现明显问题

建议： 无性能问题，将 exec 改为后台执行+exit 对性能无负面影响

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4. 代码安全 🔒

评价： 优秀 ✅ 通过

🔐 发现 0 个安全漏洞

安全漏洞详情：
✅ 未发现安全漏洞

建议： 无安全漏洞，代码不涉及用户输入处理、网络通信等安全敏感操作

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💡 改进建议代码示例

# 建议改进版本
logger -t dde-session-daemon "starting directly"
if [ -x "$REAL_BINARY" ]; then
    "$REAL_BINARY" "$@" &
    # exit 0 for systemd Type=forking - parent should exit after forking
    exit 0
else
    logger -t dde-session-daemon "error: $REAL_BINARY not found or not executable"
    exit 1
fi

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本报告由 AI 代码审查工具自动生成

[deepin-ci-robot]

[APPROVALNOTIFIER] This PR is NOT APPROVED

This pull-request has been approved by: felixonmars, fly602

The full list of commands accepted by this bot can be found here.

Details

Needs approval from an approver in each of these files:

• debian/deepin/OWNERS

Approvers can indicate their approval by writing /approve in a comment
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[BLumia]

/merge