diff options
Diffstat (limited to 'import-layers/yocto-poky/scripts/lib/wic/partition.py')
| -rw-r--r-- | import-layers/yocto-poky/scripts/lib/wic/partition.py | 312 |
1 files changed, 158 insertions, 154 deletions
diff --git a/import-layers/yocto-poky/scripts/lib/wic/partition.py b/import-layers/yocto-poky/scripts/lib/wic/partition.py index ec3aa6622..939e66731 100644 --- a/import-layers/yocto-poky/scripts/lib/wic/partition.py +++ b/import-layers/yocto-poky/scripts/lib/wic/partition.py @@ -24,18 +24,15 @@ # Tom Zanussi <tom.zanussi (at] linux.intel.com> # Ed Bartosh <ed.bartosh> (at] linux.intel.com> +import logging import os import tempfile -from wic.utils.oe.misc import msger, parse_sourceparams -from wic.utils.oe.misc import exec_cmd, exec_native_cmd -from wic.plugin import pluginmgr +from wic import WicError +from wic.utils.misc import exec_cmd, exec_native_cmd, get_bitbake_var +from wic.pluginbase import PluginMgr -partition_methods = { - "do_stage_partition":None, - "do_prepare_partition":None, - "do_configure_partition":None, -} +logger = logging.getLogger('wic') class Partition(): @@ -44,16 +41,20 @@ class Partition(): self.active = args.active self.align = args.align self.disk = args.disk + self.device = None self.extra_space = args.extra_space + self.exclude_path = args.exclude_path self.fsopts = args.fsopts self.fstype = args.fstype self.label = args.label self.mountpoint = args.mountpoint self.no_table = args.no_table + self.num = None self.overhead_factor = args.overhead_factor self.part_type = args.part_type self.rootfs_dir = args.rootfs_dir self.size = args.size + self.fixed_size = args.fixed_size self.source = args.source self.sourceparams = args.sourceparams self.system_id = args.system_id @@ -71,100 +72,128 @@ class Partition(): number of (1k) blocks we need to add to get to --size, 0 if we're already there or beyond. """ - msger.debug("Requested partition size for %s: %d" % \ - (self.mountpoint, self.size)) + logger.debug("Requested partition size for %s: %d", + self.mountpoint, self.size) if not self.size: return 0 requested_blocks = self.size - msger.debug("Requested blocks %d, current_blocks %d" % \ - (requested_blocks, current_blocks)) + logger.debug("Requested blocks %d, current_blocks %d", + requested_blocks, current_blocks) if requested_blocks > current_blocks: return requested_blocks - current_blocks else: return 0 + def get_rootfs_size(self, actual_rootfs_size=0): + """ + Calculate the required size of rootfs taking into consideration + --size/--fixed-size flags as well as overhead and extra space, as + specified in kickstart file. Raises an error if the + `actual_rootfs_size` is larger than fixed-size rootfs. + + """ + if self.fixed_size: + rootfs_size = self.fixed_size + if actual_rootfs_size > rootfs_size: + raise WicError("Actual rootfs size (%d kB) is larger than " + "allowed size %d kB" % + (actual_rootfs_size, rootfs_size)) + else: + extra_blocks = self.get_extra_block_count(actual_rootfs_size) + if extra_blocks < self.extra_space: + extra_blocks = self.extra_space + + rootfs_size = actual_rootfs_size + extra_blocks + rootfs_size *= self.overhead_factor + + logger.debug("Added %d extra blocks to %s to get to %d total blocks", + extra_blocks, self.mountpoint, rootfs_size) + + return rootfs_size + + @property + def disk_size(self): + """ + Obtain on-disk size of partition taking into consideration + --size/--fixed-size options. + + """ + return self.fixed_size if self.fixed_size else self.size + def prepare(self, creator, cr_workdir, oe_builddir, rootfs_dir, bootimg_dir, kernel_dir, native_sysroot): """ Prepare content for individual partitions, depending on partition command parameters. """ - if self.sourceparams: - self.sourceparams_dict = parse_sourceparams(self.sourceparams) - if not self.source: - if not self.size: - msger.error("The %s partition has a size of zero. Please " - "specify a non-zero --size for that partition." % \ - self.mountpoint) - if self.fstype and self.fstype == "swap": + if not self.size and not self.fixed_size: + raise WicError("The %s partition has a size of zero. Please " + "specify a non-zero --size/--fixed-size for that " + "partition." % self.mountpoint) + + if self.fstype == "swap": self.prepare_swap_partition(cr_workdir, oe_builddir, native_sysroot) self.source_file = "%s/fs.%s" % (cr_workdir, self.fstype) - elif self.fstype: + else: + if self.fstype == 'squashfs': + raise WicError("It's not possible to create empty squashfs " + "partition '%s'" % (self.mountpoint)) + rootfs = "%s/fs_%s.%s.%s" % (cr_workdir, self.label, self.lineno, self.fstype) if os.path.isfile(rootfs): os.remove(rootfs) - for prefix in ("ext", "btrfs", "vfat", "squashfs"): - if self.fstype.startswith(prefix): - method = getattr(self, - "prepare_empty_partition_" + prefix) - method(rootfs, oe_builddir, native_sysroot) - self.source_file = rootfs - break + + prefix = "ext" if self.fstype.startswith("ext") else self.fstype + method = getattr(self, "prepare_empty_partition_" + prefix) + method(rootfs, oe_builddir, native_sysroot) + self.source_file = rootfs return - plugins = pluginmgr.get_source_plugins() + plugins = PluginMgr.get_plugins('source') if self.source not in plugins: - msger.error("The '%s' --source specified for %s doesn't exist.\n\t" - "See 'wic list source-plugins' for a list of available" - " --sources.\n\tSee 'wic help source-plugins' for " - "details on adding a new source plugin." % \ - (self.source, self.mountpoint)) - - self._source_methods = pluginmgr.get_source_plugin_methods(\ - self.source, partition_methods) - self._source_methods["do_configure_partition"](self, self.sourceparams_dict, - creator, cr_workdir, - oe_builddir, - bootimg_dir, - kernel_dir, - native_sysroot) - self._source_methods["do_stage_partition"](self, self.sourceparams_dict, - creator, cr_workdir, - oe_builddir, - bootimg_dir, kernel_dir, - native_sysroot) - self._source_methods["do_prepare_partition"](self, self.sourceparams_dict, - creator, cr_workdir, - oe_builddir, - bootimg_dir, kernel_dir, rootfs_dir, - native_sysroot) + raise WicError("The '%s' --source specified for %s doesn't exist.\n\t" + "See 'wic list source-plugins' for a list of available" + " --sources.\n\tSee 'wic help source-plugins' for " + "details on adding a new source plugin." % + (self.source, self.mountpoint)) + + srcparams_dict = {} + if self.sourceparams: + # Split sourceparams string of the form key1=val1[,key2=val2,...] + # into a dict. Also accepts valueless keys i.e. without = + splitted = self.sourceparams.split(',') + srcparams_dict = dict(par.split('=') for par in splitted if par) + + plugin = PluginMgr.get_plugins('source')[self.source] + plugin.do_configure_partition(self, srcparams_dict, creator, + cr_workdir, oe_builddir, bootimg_dir, + kernel_dir, native_sysroot) + plugin.do_stage_partition(self, srcparams_dict, creator, + cr_workdir, oe_builddir, bootimg_dir, + kernel_dir, native_sysroot) + plugin.do_prepare_partition(self, srcparams_dict, creator, + cr_workdir, oe_builddir, bootimg_dir, + kernel_dir, rootfs_dir, native_sysroot) + # further processing required Partition.size to be an integer, make # sure that it is one - if type(self.size) is not int: - msger.error("Partition %s internal size is not an integer. " \ - "This a bug in source plugin %s and needs to be fixed." \ - % (self.mountpoint, self.source)) + if not isinstance(self.size, int): + raise WicError("Partition %s internal size is not an integer. " + "This a bug in source plugin %s and needs to be fixed." % + (self.mountpoint, self.source)) - def prepare_rootfs_from_fs_image(self, cr_workdir, oe_builddir, - rootfs_dir): - """ - Handle an already-created partition e.g. xxx.ext3 - """ - rootfs = oe_builddir - du_cmd = "du -Lbks %s" % rootfs - out = exec_cmd(du_cmd) - rootfs_size = out.split()[0] - - self.size = int(rootfs_size) - self.source_file = rootfs + if self.fixed_size and self.size > self.fixed_size: + raise WicError("File system image of partition %s is " + "larger (%d kB) than its allowed size %d kB" % + (self.mountpoint, self.size, self.fixed_size)) def prepare_rootfs(self, cr_workdir, oe_builddir, rootfs_dir, native_sysroot): @@ -183,30 +212,36 @@ class Partition(): pseudo += "export PSEUDO_LOCALSTATEDIR=%s;" % p_localstatedir pseudo += "export PSEUDO_PASSWD=%s;" % p_passwd pseudo += "export PSEUDO_NOSYMLINKEXP=%s;" % p_nosymlinkexp - pseudo += "%s/usr/bin/pseudo " % native_sysroot + pseudo += "%s " % get_bitbake_var("FAKEROOTCMD") rootfs = "%s/rootfs_%s.%s.%s" % (cr_workdir, self.label, self.lineno, self.fstype) if os.path.isfile(rootfs): os.remove(rootfs) - if not self.fstype: - msger.error("File system for partition %s not specified in kickstart, " \ - "use --fstype option" % (self.mountpoint)) - - for prefix in ("ext", "btrfs", "vfat", "squashfs"): - if self.fstype.startswith(prefix): - method = getattr(self, "prepare_rootfs_" + prefix) - method(rootfs, oe_builddir, rootfs_dir, native_sysroot, pseudo) - - self.source_file = rootfs - - # get the rootfs size in the right units for kickstart (kB) - du_cmd = "du -Lbks %s" % rootfs - out = exec_cmd(du_cmd) - self.size = int(out.split()[0]) + # Get rootfs size from bitbake variable if it's not set in .ks file + if not self.size: + # Bitbake variable ROOTFS_SIZE is calculated in + # Image._get_rootfs_size method from meta/lib/oe/image.py + # using IMAGE_ROOTFS_SIZE, IMAGE_ROOTFS_ALIGNMENT, + # IMAGE_OVERHEAD_FACTOR and IMAGE_ROOTFS_EXTRA_SPACE + rsize_bb = get_bitbake_var('ROOTFS_SIZE') + if rsize_bb: + logger.warning('overhead-factor was specified, but size was not,' + ' so bitbake variables will be used for the size.' + ' In this case both IMAGE_OVERHEAD_FACTOR and ' + '--overhead-factor will be applied') + self.size = int(round(float(rsize_bb))) + + prefix = "ext" if self.fstype.startswith("ext") else self.fstype + method = getattr(self, "prepare_rootfs_" + prefix) + method(rootfs, oe_builddir, rootfs_dir, native_sysroot, pseudo) + self.source_file = rootfs - break + # get the rootfs size in the right units for kickstart (kB) + du_cmd = "du -Lbks %s" % rootfs + out = exec_cmd(du_cmd) + self.size = int(out.split()[0]) def prepare_rootfs_ext(self, rootfs, oe_builddir, rootfs_dir, native_sysroot, pseudo): @@ -217,17 +252,10 @@ class Partition(): out = exec_cmd(du_cmd) actual_rootfs_size = int(out.split()[0]) - extra_blocks = self.get_extra_block_count(actual_rootfs_size) - if extra_blocks < self.extra_space: - extra_blocks = self.extra_space - - rootfs_size = actual_rootfs_size + extra_blocks - rootfs_size *= self.overhead_factor - - msger.debug("Added %d extra blocks to %s to get to %d total blocks" % \ - (extra_blocks, self.mountpoint, rootfs_size)) + rootfs_size = self.get_rootfs_size(actual_rootfs_size) - exec_cmd("truncate %s -s %d" % (rootfs, rootfs_size * 1024)) + with open(rootfs, 'w') as sparse: + os.ftruncate(sparse.fileno(), rootfs_size * 1024) extra_imagecmd = "-i 8192" @@ -239,7 +267,7 @@ class Partition(): (self.fstype, extra_imagecmd, rootfs, label_str, rootfs_dir) exec_native_cmd(mkfs_cmd, native_sysroot, pseudo=pseudo) - mkfs_cmd = "fsck.%s -pvfD %s || [ $? -le 3 ]" % (self.fstype, rootfs) + mkfs_cmd = "fsck.%s -pvfD %s" % (self.fstype, rootfs) exec_native_cmd(mkfs_cmd, native_sysroot, pseudo=pseudo) def prepare_rootfs_btrfs(self, rootfs, oe_builddir, rootfs_dir, @@ -253,17 +281,10 @@ class Partition(): out = exec_cmd(du_cmd) actual_rootfs_size = int(out.split()[0]) - extra_blocks = self.get_extra_block_count(actual_rootfs_size) - if extra_blocks < self.extra_space: - extra_blocks = self.extra_space + rootfs_size = self.get_rootfs_size(actual_rootfs_size) - rootfs_size = actual_rootfs_size + extra_blocks - rootfs_size *= self.overhead_factor - - msger.debug("Added %d extra blocks to %s to get to %d total blocks" % \ - (extra_blocks, self.mountpoint, rootfs_size)) - - exec_cmd("truncate %s -s %d" % (rootfs, rootfs_size * 1024)) + with open(rootfs, 'w') as sparse: + os.ftruncate(sparse.fileno(), rootfs_size * 1024) label_str = "" if self.label: @@ -273,29 +294,27 @@ class Partition(): (self.fstype, rootfs_size * 1024, rootfs_dir, label_str, rootfs) exec_native_cmd(mkfs_cmd, native_sysroot, pseudo=pseudo) - def prepare_rootfs_vfat(self, rootfs, oe_builddir, rootfs_dir, - native_sysroot, pseudo): + def prepare_rootfs_msdos(self, rootfs, oe_builddir, rootfs_dir, + native_sysroot, pseudo): """ - Prepare content for a vfat rootfs partition. + Prepare content for a msdos/vfat rootfs partition. """ du_cmd = "du -bks %s" % rootfs_dir out = exec_cmd(du_cmd) blocks = int(out.split()[0]) - extra_blocks = self.get_extra_block_count(blocks) - if extra_blocks < self.extra_space: - extra_blocks = self.extra_space - - blocks += extra_blocks - - msger.debug("Added %d extra blocks to %s to get to %d total blocks" % \ - (extra_blocks, self.mountpoint, blocks)) + rootfs_size = self.get_rootfs_size(blocks) label_str = "-n boot" if self.label: label_str = "-n %s" % self.label - dosfs_cmd = "mkdosfs %s -S 512 -C %s %d" % (label_str, rootfs, blocks) + size_str = "" + if self.fstype == 'msdos': + size_str = "-F 16" # FAT 16 + + dosfs_cmd = "mkdosfs %s -S 512 %s -C %s %d" % (label_str, size_str, + rootfs, rootfs_size) exec_native_cmd(dosfs_cmd, native_sysroot) mcopy_cmd = "mcopy -i %s -s %s/* ::/" % (rootfs, rootfs_dir) @@ -304,6 +323,8 @@ class Partition(): chmod_cmd = "chmod 644 %s" % rootfs exec_cmd(chmod_cmd) + prepare_rootfs_vfat = prepare_rootfs_msdos + def prepare_rootfs_squashfs(self, rootfs, oe_builddir, rootfs_dir, native_sysroot, pseudo): """ @@ -318,7 +339,9 @@ class Partition(): """ Prepare an empty ext2/3/4 partition. """ - exec_cmd("truncate %s -s %d" % (rootfs, self.size * 1024)) + size = self.disk_size + with open(rootfs, 'w') as sparse: + os.ftruncate(sparse.fileno(), size * 1024) extra_imagecmd = "-i 8192" @@ -335,7 +358,9 @@ class Partition(): """ Prepare an empty btrfs partition. """ - exec_cmd("truncate %s -s %d" % (rootfs, self.size * 1024)) + size = self.disk_size + with open(rootfs, 'w') as sparse: + os.ftruncate(sparse.fileno(), size * 1024) label_str = "" if self.label: @@ -345,50 +370,29 @@ class Partition(): (self.fstype, self.size * 1024, label_str, rootfs) exec_native_cmd(mkfs_cmd, native_sysroot) - def prepare_empty_partition_vfat(self, rootfs, oe_builddir, - native_sysroot): + def prepare_empty_partition_msdos(self, rootfs, oe_builddir, + native_sysroot): """ Prepare an empty vfat partition. """ - blocks = self.size + blocks = self.disk_size label_str = "-n boot" if self.label: label_str = "-n %s" % self.label - dosfs_cmd = "mkdosfs %s -S 512 -C %s %d" % (label_str, rootfs, blocks) + size_str = "" + if self.fstype == 'msdos': + size_str = "-F 16" # FAT 16 + + dosfs_cmd = "mkdosfs %s -S 512 %s -C %s %d" % (label_str, size_str, + rootfs, blocks) exec_native_cmd(dosfs_cmd, native_sysroot) chmod_cmd = "chmod 644 %s" % rootfs exec_cmd(chmod_cmd) - def prepare_empty_partition_squashfs(self, cr_workdir, oe_builddir, - native_sysroot): - """ - Prepare an empty squashfs partition. - """ - msger.warning("Creating of an empty squashfs %s partition was attempted. " \ - "Proceeding as requested." % self.mountpoint) - - path = "%s/fs_%s.%s" % (cr_workdir, self.label, self.fstype) - os.path.isfile(path) and os.remove(path) - - # it is not possible to create a squashfs without source data, - # thus prepare an empty temp dir that is used as source - tmpdir = tempfile.mkdtemp() - - squashfs_cmd = "mksquashfs %s %s -noappend" % \ - (tmpdir, path) - exec_native_cmd(squashfs_cmd, native_sysroot) - - os.rmdir(tmpdir) - - # get the rootfs size in the right units for kickstart (kB) - du_cmd = "du -Lbks %s" % path - out = exec_cmd(du_cmd) - fs_size = out.split()[0] - - self.size = int(fs_size) + prepare_empty_partition_vfat = prepare_empty_partition_msdos def prepare_swap_partition(self, cr_workdir, oe_builddir, native_sysroot): """ @@ -396,7 +400,8 @@ class Partition(): """ path = "%s/fs.%s" % (cr_workdir, self.fstype) - exec_cmd("truncate %s -s %d" % (path, self.size * 1024)) + with open(path, 'w') as sparse: + os.ftruncate(sparse.fileno(), self.size * 1024) import uuid label_str = "" @@ -404,4 +409,3 @@ class Partition(): label_str = "-L %s" % self.label mkswap_cmd = "mkswap %s -U %s %s" % (label_str, str(uuid.uuid1()), path) exec_native_cmd(mkswap_cmd, native_sysroot) - |