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Zopfli is not always smaller

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topjohnwu
2021-08-28 17:16:20 -07:00
parent 7343c195b7
commit 34e5a7cd24
4 changed files with 16 additions and 1 deletions
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8
native/jni/magiskboot/bootimg.cpp
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@ -541,6 +541,14 @@ void repack(const char *src_img, const char *out_img, bool skip_comp) {
} else {
hdr->kernel_size() = xwrite(fd, raw_buf, raw_size);
}
if (boot.flags[ZIMAGE_KERNEL] &&
boot.k_fmt == GZIP && hdr->kernel_size() > boot.hdr->kernel_size()) {
// Revert and try zipfoli
ftruncate(fd, lseek(fd, -hdr->kernel_size(), SEEK_CUR));
hdr->kernel_size() = compress(ZOPFLI, fd, raw_buf, raw_size);
}
munmap(raw_buf, raw_size);
}
if (boot.flags[ZIMAGE_KERNEL]) {