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wic: Add vfat support

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Add vfat as a supported rootfs type (in addition to the current
ext2/3/4 and btrfs support).

vfat partitions can now be created using --source rootfs along with
--fstype=vfat, or without --source but specifying a --size.

(From OE-Core rev: d9efc110fd73822629b2a3326761f2256b9f23b0)

Signed-off-by: Tom Zanussi <tom.zanussi@linux.intel.com>
Signed-off-by: Saul Wold <sgw@linux.intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
This commit is contained in:
Tom Zanussi
2014-07-10 14:29:27 -05:00
committed by Richard Purdie
parent f3986878ed
commit 83e5c09d2f
1 changed files with 74 additions and 0 deletions
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74
scripts/lib/mic/kickstart/custom_commands/partition.py
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@@ -186,6 +186,11 @@ class Wic_PartData(Mic_PartData):
rootfs_dir, native_sysroot,
pseudo)
elif self.fstype.startswith("vfat"):
return self.prepare_rootfs_vfat(cr_workdir, oe_builddir,
rootfs_dir, native_sysroot,
pseudo)
def prepare_rootfs_ext(self, cr_workdir, oe_builddir, rootfs_dir,
native_sysroot, pseudo):
"""
@@ -270,6 +275,53 @@ class Wic_PartData(Mic_PartData):
self.size = rootfs_size
self.source_file = rootfs
def prepare_rootfs_vfat(self, cr_workdir, oe_builddir, rootfs_dir,
native_sysroot, pseudo):
"""
Prepare content for a vfat rootfs partition.
"""
image_rootfs = rootfs_dir
rootfs = "%s/rootfs_%s.%s" % (cr_workdir, self.label, self.fstype)
du_cmd = "du -bks %s" % image_rootfs
rc, out = exec_cmd(du_cmd)
blocks = int(out.split()[0])
extra_blocks = self.get_extra_block_count(blocks)
if extra_blocks < BOOTDD_EXTRA_SPACE:
extra_blocks = BOOTDD_EXTRA_SPACE
blocks += extra_blocks
msger.debug("Added %d extra blocks to %s to get to %d total blocks" % \
(extra_blocks, self.mountpoint, blocks))
# Ensure total sectors is an integral number of sectors per
# track or mcopy will complain. Sectors are 512 bytes, and we
# generate images with 32 sectors per track. This calculation is
# done in blocks, thus the mod by 16 instead of 32.
blocks += (16 - (blocks % 16))
dosfs_cmd = "mkdosfs -n boot -S 512 -C %s %d" % (rootfs, blocks)
exec_native_cmd(dosfs_cmd, native_sysroot)
mcopy_cmd = "mcopy -i %s -s %s/* ::/" % (rootfs, image_rootfs)
rc, out = exec_native_cmd(mcopy_cmd, native_sysroot)
if rc:
msger.error("ERROR: mcopy returned '%s' instead of 0 (which you probably don't want to ignore, use --debug for details)" % rc)
chmod_cmd = "chmod 644 %s" % rootfs
exec_cmd(chmod_cmd)
# get the rootfs size in the right units for kickstart (Mb)
du_cmd = "du -Lbms %s" % rootfs
rc, out = exec_cmd(du_cmd)
rootfs_size = out.split()[0]
self.set_size(rootfs_size)
self.set_source_file(rootfs)
def prepare_empty_partition(self, cr_workdir, oe_builddir, native_sysroot):
"""
Prepare an empty partition.
@@ -280,6 +332,9 @@ class Wic_PartData(Mic_PartData):
elif self.fstype.startswith("btrfs"):
return self.prepare_empty_partition_btrfs(cr_workdir, oe_builddir,
native_sysroot)
elif self.fstype.startswith("vfat"):
return self.prepare_empty_partition_vfat(cr_workdir, oe_builddir,
native_sysroot)
def prepare_empty_partition_ext(self, cr_workdir, oe_builddir,
native_sysroot):
@@ -322,6 +377,25 @@ class Wic_PartData(Mic_PartData):
return 0
def prepare_empty_partition_vfat(self, cr_workdir, oe_builddir,
native_sysroot):
"""
Prepare an empty vfat partition.
"""
fs = "%s/fs.%s" % (cr_workdir, self.fstype)
blocks = self.size * 1024
dosfs_cmd = "mkdosfs -n boot -S 512 -C %s %d" % (fs, blocks)
exec_native_cmd(dosfs_cmd, native_sysroot)
chmod_cmd = "chmod 644 %s" % fs
exec_cmd(chmod_cmd)
self.source_file = fs
return 0
def prepare_swap_partition(self, cr_workdir, oe_builddir, native_sysroot):
"""
Prepare a swap partition.