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# SPDX-License-Identifier: GPL-2.0
# Copyright (C) 2020 Bootlin
# Author: Joao Marcos Costa <joaomarcos.costa@bootlin.com>
import os
import random
import string
def sqfs_get_random_letters(size):
letters = []
for i in range(0, size):
letters.append(random.choice(string.ascii_letters))
return ''.join(letters)
def sqfs_generate_file(path, size):
content = sqfs_get_random_letters(size)
file = open(path, "w")
file.write(content)
file.close()
# generate image with three files and a symbolic link
def sqfs_generate_image(cons):
src = os.path.join(cons.config.build_dir, "sqfs_src/")
dest = os.path.join(cons.config.build_dir, "sqfs")
os.mkdir(src)
sqfs_generate_file(src + "frag_only", 100)
sqfs_generate_file(src + "blks_frag", 5100)
sqfs_generate_file(src + "blks_only", 4096)
os.symlink("frag_only", src + "sym")
os.system("mksquashfs " + src + " " + dest + " -b 4096 -always-use-fragments")
# removes all files created by sqfs_generate_image()
def sqfs_clean(cons):
src = os.path.join(cons.config.build_dir, "sqfs_src/")
dest = os.path.join(cons.config.build_dir, "sqfs")
os.remove(src + "frag_only")
os.remove(src + "blks_frag")
os.remove(src + "blks_only")
os.remove(src + "sym")
os.rmdir(src)
os.remove(dest)
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