wic: Rename /mic to /wic

As well as any other stray instances of mic in the codebase that can
be removed.

We don't really need to carry around legacy naming, and the history is
in git.

Signed-off-by: Tom Zanussi <tom.zanussi@linux.intel.com>

1 files changed, 360 insertions, 0 deletions

diff --git a/scripts/lib/wic/utils/partitionedfs.py b/scripts/lib/wic/utils/partitionedfs.py
new file mode 100644
index 0000000000..76aa42135b
--- /dev/null
+++ b/scripts/lib/wic/utils/partitionedfs.py
@@ -0,0 +1,360 @@
+#!/usr/bin/python -tt
+#
+# Copyright (c) 2009, 2010, 2011 Intel, Inc.
+# Copyright (c) 2007, 2008 Red Hat, Inc.
+# Copyright (c) 2008 Daniel P. Berrange
+# Copyright (c) 2008 David P. Huff
+#
+# This program is free software; you can redistribute it and/or modify it
+# under the terms of the GNU General Public License as published by the Free
+# Software Foundation; version 2 of the License
+#
+# This program is distributed in the hope that it will be useful, but
+# WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+# or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+# for more details.
+#
+# You should have received a copy of the GNU General Public License along
+# with this program; if not, write to the Free Software Foundation, Inc., 59
+# Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+
+import os
+
+from wic import msger
+from wic.utils import runner
+from wic.utils.errors import ImageError
+from wic.utils.fs_related import *
+from wic.utils.oe.misc import *
+
+# Overhead of the MBR partitioning scheme (just one sector)
+MBR_OVERHEAD = 1
+
+# Size of a sector in bytes
+SECTOR_SIZE = 512
+
+class Image:
+    """
+    Generic base object for an image.
+
+    An Image is a container for a set of DiskImages and associated
+    partitions.
+    """
+    def __init__(self):
+        self.disks = {}
+        self.partitions = []
+        self.parted = find_binary_path("parted")
+        # Size of a sector used in calculations
+        self.sector_size = SECTOR_SIZE
+        self._partitions_layed_out = False
+
+    def __add_disk(self, disk_name):
+        """ Add a disk 'disk_name' to the internal list of disks. Note,
+        'disk_name' is the name of the disk in the target system
+        (e.g., sdb). """
+
+        if disk_name in self.disks:
+            # We already have this disk
+            return
+
+        assert not self._partitions_layed_out
+
+        self.disks[disk_name] = \
+                { 'disk': None,     # Disk object
+                  'numpart': 0,     # Number of allocate partitions
+                  'partitions': [], # Indexes to self.partitions
+                  'offset': 0,      # Offset of next partition (in sectors)
+                  # Minimum required disk size to fit all partitions (in bytes)
+                  'min_size': 0,
+                  'ptable_format': "msdos" } # Partition table format
+
+    def add_disk(self, disk_name, disk_obj):
+        """ Add a disk object which have to be partitioned. More than one disk
+        can be added. In case of multiple disks, disk partitions have to be
+        added for each disk separately with 'add_partition()". """
+
+        self.__add_disk(disk_name)
+        self.disks[disk_name]['disk'] = disk_obj
+
+    def __add_partition(self, part):
+        """ This is a helper function for 'add_partition()' which adds a
+        partition to the internal list of partitions. """
+
+        assert not self._partitions_layed_out
+
+        self.partitions.append(part)
+        self.__add_disk(part['disk_name'])
+
+    def add_partition(self, size, disk_name, mountpoint, source_file = None, fstype = None,
+                      label=None, fsopts = None, boot = False, align = None,
+                      part_type = None):
+        """ Add the next partition. Prtitions have to be added in the
+        first-to-last order. """
+
+        ks_pnum = len(self.partitions)
+
+        # Converting MB to sectors for parted
+        size = size * 1024 * 1024 / self.sector_size
+
+        # We still need partition for "/" or non-subvolume
+        if mountpoint == "/" or not fsopts:
+            part = { 'ks_pnum' : ks_pnum, # Partition number in the KS file
+                     'size': size, # In sectors
+                     'mountpoint': mountpoint, # Mount relative to chroot
+                     'source_file': source_file, # partition contents
+                     'fstype': fstype, # Filesystem type
+                     'fsopts': fsopts, # Filesystem mount options
+                     'label': label, # Partition label
+                     'disk_name': disk_name, # physical disk name holding partition
+                     'device': None, # kpartx device node for partition
+                     'num': None, # Partition number
+                     'boot': boot, # Bootable flag
+                     'align': align, # Partition alignment
+                     'part_type' : part_type } # Partition type
+
+            self.__add_partition(part)
+
+    def layout_partitions(self, ptable_format = "msdos"):
+        """ Layout the partitions, meaning calculate the position of every
+        partition on the disk. The 'ptable_format' parameter defines the
+        partition table format and may be "msdos". """
+
+        msger.debug("Assigning %s partitions to disks" % ptable_format)
+
+        if ptable_format not in ('msdos'):
+            raise ImageError("Unknown partition table format '%s', supported " \
+                             "formats are: 'msdos'" % ptable_format)
+
+        if self._partitions_layed_out:
+            return
+
+        self._partitions_layed_out = True
+
+        # Go through partitions in the order they are added in .ks file
+        for n in range(len(self.partitions)):
+            p = self.partitions[n]
+
+            if not self.disks.has_key(p['disk_name']):
+                raise ImageError("No disk %s for partition %s" \
+                                 % (p['disk_name'], p['mountpoint']))
+
+            if p['part_type']:
+                # The --part-type can also be implemented for MBR partitions,
+                # in which case it would map to the 1-byte "partition type"
+                # filed at offset 3 of the partition entry.
+                raise ImageError("setting custom partition type is not " \
+                                 "implemented for msdos partitions")
+
+            # Get the disk where the partition is located
+            d = self.disks[p['disk_name']]
+            d['numpart'] += 1
+            d['ptable_format'] = ptable_format
+
+            if d['numpart'] == 1:
+                if ptable_format == "msdos":
+                    overhead = MBR_OVERHEAD
+
+                # Skip one sector required for the partitioning scheme overhead
+                d['offset'] += overhead
+                # Steal few sectors from the first partition to offset for the
+                # partitioning overhead
+                p['size'] -= overhead
+
+            if p['align']:
+                # If not first partition and we do have alignment set we need
+                # to align the partition.
+                # FIXME: This leaves a empty spaces to the disk. To fill the
+                # gaps we could enlargea the previous partition?
+
+                # Calc how much the alignment is off.
+                align_sectors = d['offset'] % (p['align'] * 1024 / self.sector_size)
+                # We need to move forward to the next alignment point
+                align_sectors = (p['align'] * 1024 / self.sector_size) - align_sectors
+
+                msger.debug("Realignment for %s%s with %s sectors, original"
+                            " offset %s, target alignment is %sK." %
+                            (p['disk_name'], d['numpart'], align_sectors,
+                             d['offset'], p['align']))
+
+                # increase the offset so we actually start the partition on right alignment
+                d['offset'] += align_sectors
+
+            p['start'] = d['offset']
+            d['offset'] += p['size']
+
+            p['type'] = 'primary'
+            p['num'] = d['numpart']
+
+            if d['ptable_format'] == "msdos":
+                if d['numpart'] > 2:
+                    # Every logical partition requires an additional sector for
+                    # the EBR, so steal the last sector from the end of each
+                    # partition starting from the 3rd one for the EBR. This
+                    # will make sure the logical partitions are aligned
+                    # correctly.
+                    p['size'] -= 1
+
+                if d['numpart'] > 3:
+                    p['type'] = 'logical'
+                    p['num'] = d['numpart'] + 1
+
+            d['partitions'].append(n)
+            msger.debug("Assigned %s to %s%d, sectors range %d-%d size %d "
+                        "sectors (%d bytes)." \
+                            % (p['mountpoint'], p['disk_name'], p['num'],
+                               p['start'], p['start'] + p['size'] - 1,
+                               p['size'], p['size'] * self.sector_size))
+
+        # Once all the partitions have been layed out, we can calculate the
+        # minumim disk sizes.
+        for disk_name, d in self.disks.items():
+            d['min_size'] = d['offset']
+
+            d['min_size'] *= self.sector_size
+
+    def __run_parted(self, args):
+        """ Run parted with arguments specified in the 'args' list. """
+
+        args.insert(0, self.parted)
+        msger.debug(args)
+
+        rc, out = runner.runtool(args, catch = 3)
+        out = out.strip()
+        if out:
+            msger.debug('"parted" output: %s' % out)
+
+        if rc != 0:
+            # We don't throw exception when return code is not 0, because
+            # parted always fails to reload part table with loop devices. This
+            # prevents us from distinguishing real errors based on return
+            # code.
+            msger.error("WARNING: parted returned '%s' instead of 0 (use --debug for details)" % rc)
+
+    def __create_partition(self, device, parttype, fstype, start, size):
+        """ Create a partition on an image described by the 'device' object. """
+
+        # Start is included to the size so we need to substract one from the end.
+        end = start + size - 1
+        msger.debug("Added '%s' partition, sectors %d-%d, size %d sectors" %
+                    (parttype, start, end, size))
+
+        args = ["-s", device, "unit", "s", "mkpart", parttype]
+        if fstype:
+            args.extend([fstype])
+        args.extend(["%d" % start, "%d" % end])
+
+        return self.__run_parted(args)
+
+    def __format_disks(self):
+        self.layout_partitions()
+
+        for dev in self.disks.keys():
+            d = self.disks[dev]
+            msger.debug("Initializing partition table for %s" % \
+                        (d['disk'].device))
+            self.__run_parted(["-s", d['disk'].device, "mklabel",
+                               d['ptable_format']])
+
+        msger.debug("Creating partitions")
+
+        for p in self.partitions:
+            d = self.disks[p['disk_name']]
+            if d['ptable_format'] == "msdos" and p['num'] == 5:
+                # The last sector of the 3rd partition was reserved for the EBR
+                # of the first _logical_ partition. This is why the extended
+                # partition should start one sector before the first logical
+                # partition.
+                self.__create_partition(d['disk'].device, "extended",
+                                        None, p['start'] - 1,
+                                        d['offset'] - p['start'])
+
+            if p['fstype'] == "swap":
+                parted_fs_type = "linux-swap"
+            elif p['fstype'] == "vfat":
+                parted_fs_type = "fat32"
+            elif p['fstype'] == "msdos":
+                parted_fs_type = "fat16"
+            else:
+                # Type for ext2/ext3/ext4/btrfs
+                parted_fs_type = "ext2"
+
+            # Boot ROM of OMAP boards require vfat boot partition to have an
+            # even number of sectors.
+            if p['mountpoint'] == "/boot" and p['fstype'] in ["vfat", "msdos"] \
+               and p['size'] % 2:
+                msger.debug("Substracting one sector from '%s' partition to " \
+                            "get even number of sectors for the partition" % \
+                            p['mountpoint'])
+                p['size'] -= 1
+
+            self.__create_partition(d['disk'].device, p['type'],
+                                    parted_fs_type, p['start'], p['size'])
+
+            if p['boot']:
+                flag_name = "boot"
+                msger.debug("Set '%s' flag for partition '%s' on disk '%s'" % \
+                            (flag_name, p['num'], d['disk'].device))
+                self.__run_parted(["-s", d['disk'].device, "set",
+                                   "%d" % p['num'], flag_name, "on"])
+
+            # Parted defaults to enabling the lba flag for fat16 partitions,
+            # which causes compatibility issues with some firmware (and really
+            # isn't necessary).
+            if parted_fs_type == "fat16":
+                if d['ptable_format'] == 'msdos':
+                    msger.debug("Disable 'lba' flag for partition '%s' on disk '%s'" % \
+                                (p['num'], d['disk'].device))
+                    self.__run_parted(["-s", d['disk'].device, "set",
+                                       "%d" % p['num'], "lba", "off"])
+
+    def cleanup(self):
+        if self.disks:
+            for dev in self.disks.keys():
+                d = self.disks[dev]
+                try:
+                    d['disk'].cleanup()
+                except:
+                    pass
+
+    def __write_partition(self, num, source_file, start, size):
+        """
+        Install source_file contents into a partition.
+        """
+        if not source_file: # nothing to write
+            return
+
+        # Start is included in the size so need to substract one from the end.
+        end = start + size - 1
+        msger.debug("Installed %s in partition %d, sectors %d-%d, size %d sectors" % (source_file, num, start, end, size))
+
+        dd_cmd = "dd if=%s of=%s bs=%d seek=%d count=%d conv=notrunc" % \
+            (source_file, self.image_file, self.sector_size, start, size)
+        exec_cmd(dd_cmd)
+
+
+    def assemble(self, image_file):
+        msger.debug("Installing partitions")
+
+        self.image_file = image_file
+
+        for p in self.partitions:
+            d = self.disks[p['disk_name']]
+            if d['ptable_format'] == "msdos" and p['num'] == 5:
+                # The last sector of the 3rd partition was reserved for the EBR
+                # of the first _logical_ partition. This is why the extended
+                # partition should start one sector before the first logical
+                # partition.
+                self.__write_partition(p['num'], p['source_file'],
+                                       p['start'] - 1,
+                                       d['offset'] - p['start'])
+
+            self.__write_partition(p['num'], p['source_file'],
+                                   p['start'], p['size'])
+
+    def create(self):
+        for dev in self.disks.keys():
+            d = self.disks[dev]
+            d['disk'].create()
+
+        self.__format_disks()
+
+        return