def populate_rootfs(content_dir, root_disk, partition, rootfs_type,
rootfs_id, should_create_swap, swap_size,
mmc_device_id, partition_offset, os_release_id,
board_config=None):
"""Populate the rootfs and make the necessary tweaks to make it usable.
This consists of:
1. Create a directory on the path specified by root_disk
2. Mount the given partition onto the created directory.
3. Setup an atexit handler to unmount the partition mounted above.
4. Move the contents of content_dir to that directory.
5. If should_create_swap, then create it with the given size.
6. Add fstab entries for the / filesystem and swap (if created).
7. Create a /etc/flash-kernel.conf containing the target's boot device.
"""
print "\nPopulating rootfs partition"
print "Be patient, this may take a few minutes\n"
# Create a directory to mount the rootfs partition.
os.makedirs(root_disk)
with partition_mounted(partition, root_disk):
move_contents(content_dir, root_disk)
mount_options = rootfs_mount_options(rootfs_type)
fstab_additions = ["%s / %s %s 0 1" % (
rootfs_id, rootfs_type, mount_options)]
if should_create_swap:
print "\nCreating SWAP File\n"
if has_space_left_for_swap(root_disk, swap_size):
proc = cmd_runner.run([
'dd',
'if=/dev/zero',
'of=%s/SWAP.swap' % root_disk,
'bs=1M',
'count=%s' % swap_size], as_root=True)
proc.wait()
proc = cmd_runner.run(
['mkswap', '%s/SWAP.swap' % root_disk], as_root=True)
proc.wait()
fstab_additions.append("/SWAP.swap none swap sw 0 0")
else:
print ("Swap file is bigger than space left on partition; "
"continuing without swap.")
append_to_fstab(root_disk, fstab_additions)
if os_release_id == 'debian' or os_release_id == 'ubuntu' or \
os.path.exists('%s/etc/debian_version' % root_disk):
print "\nCreating /etc/flash-kernel.conf\n"
create_flash_kernel_config(
root_disk, mmc_device_id, 1 + partition_offset)
if board_config is not None:
print "\nUpdating /etc/network/interfaces\n"
update_network_interfaces(root_disk, board_config)
def populate_partition(content_dir, root_disk, partition):
os.makedirs(root_disk)
with partition_mounted(partition, root_disk):
move_contents(content_dir, root_disk)