mirror of
https://github.com/rosalinux/image-builder.git
synced 2025-02-23 18:32:51 +00:00
98 lines
3.5 KiB
Python
98 lines
3.5 KiB
Python
#!/usr/bin/env python
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import os
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import subprocess
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def create_disk_image(tmp_dir, config, vendor, device):
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boot_size = config.get("BOOT_SIZE").rstrip("MB")
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root_size = config.get("ROOT_SIZE").rstrip("MB")
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if not root_size:
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print("Error: ROOT_SIZE is not defined in the configuration.")
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return
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if not boot_size:
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boot_size = "0"
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disk_image_path = os.path.join(tmp_dir, vendor, device, "disk.img")
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cmd = [
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"dd",
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"if=/dev/zero",
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f"of={disk_image_path}",
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"bs=1M",
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f"count={int(boot_size) + int(root_size)}"
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]
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print(f"Creating disk image: {disk_image_path} size {root_size} MB")
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subprocess.run(cmd, check=True)
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print(f"Disk image created at {disk_image_path}")
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return disk_image_path
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def cleanup_loop_devices():
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result = subprocess.run(["losetup", "-l", "-O", "NAME"], capture_output=True, text=True)
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active_loops = result.stdout.splitlines()[1:]
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for loop_device in active_loops:
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loop_device = loop_device.strip()
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if loop_device:
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print(f"Detaching {loop_device}")
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subprocess.run(["sudo", "losetup", "-d", loop_device], check=False)
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def setup_loop_device(disk_image_path):
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cleanup_loop_devices()
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cmd = ["sudo", "losetup", "-fP", "--show", disk_image_path]
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result = subprocess.run(cmd, check=True, capture_output=True, text=True)
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loop_device = result.stdout.strip()
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print(f"Disk image mounted to loop device {loop_device}")
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return loop_device
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def create_partitions(loop_device, config):
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root_size = config.get("ROOT_SIZE", "1024MB").rstrip("MB")
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root_fstype = config.get("ROOT_FSTYPE", "ext4")
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boot_size = config.get("BOOT_SIZE")
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boot_fstype = config.get("BOOT_FSTYPE", "vfat") if boot_size else None
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print(f"Creating partitions on {loop_device}...")
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if boot_size:
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boot_size = boot_size.rstrip("MB")
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fdisk_commands = f"""\nn\np\n\n\n+{boot_size}M\nn\np\n\n\n\nw"""
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subprocess.run(["sudo", "fdisk", "--wipe", "always", loop_device], input=fdisk_commands, text=True, check=True)
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print(f" - Formatting /boot as {boot_fstype} ({boot_size} MB)")
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subprocess.run(["sudo", "mkfs.vfat", "-F", "32", f"{loop_device}p1"], check=True)
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print(f" - Formatting root (/) as {root_fstype} ({root_size} MB)")
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subprocess.run(["sudo", "mkfs.ext4", f"{loop_device}p2"], check=True)
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else:
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fdisk_commands = f"""o\nn\np\n\n\n+{root_size}M\nw\n"""
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subprocess.run(["sudo", "fdisk", "--wipe", "always", loop_device], input=fdisk_commands, text=True, check=True)
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print(f" - Formatting single root (/) partition as {root_fstype} ({root_size} MB)")
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subprocess.run(["sudo", "mkfs.ext4", f"{loop_device}p1"], check=True)
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print("Partitioning and formatting complete.")
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def mount_partitions(config, loop_device, tmp_dir, vendor, device):
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rootfs_dir = os.path.join(tmp_dir, vendor, device, "rootfs")
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os.makedirs(rootfs_dir, exist_ok=True)
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boot_partition = f"{loop_device}p1"
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root_partition = f"{loop_device}p2" if "BOOT_SIZE" in config else f"{loop_device}p1"
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if "BOOT_SIZE" in config:
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boot_dir = os.path.join(rootfs_dir, "boot")
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os.makedirs(boot_dir, exist_ok=True)
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print(f"Mounting /boot partition at {boot_dir}")
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subprocess.run(["sudo", "mount", boot_partition, boot_dir], check=True)
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print(f"Mounting root (/) partition at {rootfs_dir}")
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subprocess.run(["sudo", "mount", root_partition, rootfs_dir], check=True)
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print("Mounting complete.")
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