wic: call os.ftruncate instead of running truncate
Replaced running of truncate utility with the standard library call os.ftruncate (From OE-Core rev: 1ba6101ceaee354816e690d44bc9a5dd8dcf4011) Signed-off-by: Ed Bartosh <ed.bartosh@linux.intel.com> Signed-off-by: Ross Burton <ross.burton@intel.com> Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
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@ -56,8 +56,9 @@ class DiskImage():
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if self.created:
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return
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# create sparse disk image
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cmd = "truncate %s -s %s" % (self.device, self.size)
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exec_cmd(cmd)
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with open(self.device, 'w') as sparse:
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os.ftruncate(sparse.fileno(), self.size)
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self.created = True
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class DirectImageCreator(BaseImageCreator):
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@ -217,7 +217,8 @@ class Partition():
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msger.debug("Added %d extra blocks to %s to get to %d total blocks" % \
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(extra_blocks, self.mountpoint, rootfs_size))
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exec_cmd("truncate %s -s %d" % (rootfs, rootfs_size * 1024))
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with open(rootfs, 'w') as sparse:
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os.ftruncate(sparse.fileno(), rootfs_size * 1024)
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extra_imagecmd = "-i 8192"
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@ -250,7 +251,8 @@ class Partition():
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msger.debug("Added %d extra blocks to %s to get to %d total blocks" % \
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(extra_blocks, self.mountpoint, rootfs_size))
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exec_cmd("truncate %s -s %d" % (rootfs, rootfs_size * 1024))
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with open(rootfs, 'w') as sparse:
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os.ftruncate(sparse.fileno(), rootfs_size * 1024)
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label_str = ""
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if self.label:
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@ -305,7 +307,8 @@ class Partition():
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"""
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Prepare an empty ext2/3/4 partition.
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"""
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exec_cmd("truncate %s -s %d" % (rootfs, self.size * 1024))
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with open(rootfs, 'w') as sparse:
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os.ftruncate(sparse.fileno(), rootfs_size * 1024)
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extra_imagecmd = "-i 8192"
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@ -322,7 +325,8 @@ class Partition():
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"""
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Prepare an empty btrfs partition.
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"""
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exec_cmd("truncate %s -s %d" % (rootfs, self.size * 1024))
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with open(rootfs, 'w') as sparse:
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os.ftruncate(sparse.fileno(), rootfs_size * 1024)
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label_str = ""
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if self.label:
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@ -383,7 +387,8 @@ class Partition():
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"""
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path = "%s/fs.%s" % (cr_workdir, self.fstype)
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exec_cmd("truncate %s -s %d" % (path, self.size * 1024))
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with open(path, 'w') as sparse:
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os.ftruncate(sparse.fileno(), self.size * 1024)
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import uuid
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label_str = ""
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