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ANDROID: PM: hibernate: Encryption support with compression

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Currently only the uncompressed hibernation snapshot image is encrypted
before being written to the swap partition. Extend the encryption
support for compression enabled scenarios as well.

Bug: 335581841
Change-Id: Ida781b727f56b664a67e2887a4db3d6b355dafdb
Signed-off-by: Nikhil V <quic_nprakash@quicinc.com>
This commit is contained in:
Nikhil V 2023-09-11 11:34:34 +05:30
parent 3e99ae28ea
commit 503add1843
1 changed files with 4 additions and 1 deletions
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5
kernel/power/swap.c
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@ -596,7 +596,6 @@ static int save_image(struct swap_map_handle *handle,
if (!ret)
pr_info("Image saving done\n");
swsusp_show_speed(start, stop, nr_to_write, "Wrote");
trace_android_vh_post_image_save(root_swap);
return ret;
}
@ -879,6 +878,7 @@ static int save_compressed_image(struct swap_map_handle *handle,
off += PAGE_SIZE) {
memcpy(page, data[thr].cmp + off, PAGE_SIZE);
trace_android_vh_encrypt_page(page);
ret = swap_write_page(handle, page, &hb);
if (ret)
goto out_finish;
@ -997,6 +997,9 @@ int swsusp_write(unsigned int flags)
error = (flags & SF_NOCOMPRESS_MODE) ?
save_image(&handle, &snapshot, pages - 1) :
save_compressed_image(&handle, &snapshot, pages - 1);
if (!error)
trace_android_vh_post_image_save(root_swap);
}
out_finish:
error = swap_writer_finish(&handle, flags, error);