37 lines
1.2 KiB
Bash
37 lines
1.2 KiB
Bash
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#!/usr/bin/env bash
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# make_sata_sidecar.sh — 重建 .build_tmp/sata_fat32_dsk.img（AHCI 边车测试盘）
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# 用法: sudo bash make_sata_sidecar.sh <SYSTEM_DIR> <OUT_IMG>
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# 说明: 纯 FAT32（无 GPT），DSK 经 ahci0 provider 读 BPB。
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# 只拷贝 DSK 运行期需要的子树（排除 boot/ EFI/ limine/ 等仅 Limine
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# ESP 需要的大文件），大小按内容自适应。需要 mkfs.vfat + loop mount。
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set -euo pipefail
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SRC="${1:?usage: $0 <SYSTEM_DIR> <OUT_IMG>}"
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IMG="${2:?usage: $0 <SYSTEM_DIR> <OUT_IMG>}"
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command -v mkfs.vfat >/dev/null || { echo "mkfs.vfat missing" >&2; exit 1; }
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STAGE=$(mktemp -d)
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trap 'rm -rf "$STAGE"' EXIT
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# 仅运行期子树；boot/EFI/limine 是 Limine ESP 专属（rootfs 镜像 GB 级）
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for d in SYSTEM EFI limine; do
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[ -e "$SRC/$d" ] && cp -r "$SRC/$d" "$STAGE"/
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done
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need_kb=$(du -sk "$STAGE" | cut -f1)
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size_mb=$(( need_kb / 1024 * 2 + 64 ))
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[ "$size_mb" -lt 64 ] && size_mb=64
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rm -f "$IMG"
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truncate -s "${size_mb}M" "$IMG"
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mkfs.vfat -F 32 -n DESHAB "$IMG" >/dev/null
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MNT=$(mktemp -d)
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mount -o loop "$IMG" "$MNT"
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cp -r "$STAGE"/. "$MNT"/
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sync
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umount "$MNT"
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rmdir "$MNT"
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echo "[sidecar] rebuilt: $IMG (${size_mb}MB FAT32)"
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