1 files changed, 0 insertions, 403 deletions
diff --git a/kernel/power/tuxonice_bio_signature.c b/kernel/power/tuxonice_bio_signature.c
deleted file mode 100644
index ead874f8e..000000000
--- a/kernel/power/tuxonice_bio_signature.c
+++ /dev/null
@@ -1,403 +0,0 @@
-/*
- * kernel/power/tuxonice_bio_signature.c
- *
- * Copyright (C) 2004-2015 Nigel Cunningham (nigel at nigelcunningham com au)
- *
- * Distributed under GPLv2.
- *
- */
-
-#include <linux/fs_uuid.h>
-
-#include "tuxonice.h"
-#include "tuxonice_sysfs.h"
-#include "tuxonice_modules.h"
-#include "tuxonice_prepare_image.h"
-#include "tuxonice_bio.h"
-#include "tuxonice_ui.h"
-#include "tuxonice_alloc.h"
-#include "tuxonice_io.h"
-#include "tuxonice_builtin.h"
-#include "tuxonice_bio_internal.h"
-
-struct sig_data *toi_sig_data;
-
-/* Struct of swap header pages */
-
-struct old_sig_data {
-	dev_t device;
-	unsigned long sector;
-	int resume_attempted;
-	int orig_sig_type;
-};
-
-union diskpage {
-	union swap_header swh;	/* swh.magic is the only member used */
-	struct sig_data sig_data;
-	struct old_sig_data old_sig_data;
-};
-
-union p_diskpage {
-	union diskpage *pointer;
-	char *ptr;
-	unsigned long address;
-};
-
-char *toi_cur_sig_page;
-char *toi_orig_sig_page;
-int have_image;
-int have_old_image;
-
-int get_signature_page(void)
-{
-	if (!toi_cur_sig_page) {
-		toi_message(TOI_IO, TOI_VERBOSE, 0,
-				"Allocating current signature page.");
-		toi_cur_sig_page = (char *) toi_get_zeroed_page(38,
-			TOI_ATOMIC_GFP);
-		if (!toi_cur_sig_page) {
-			printk(KERN_ERR "Failed to allocate memory for the "
-				"current image signature.\n");
-			return -ENOMEM;
-		}
-
-		toi_sig_data = (struct sig_data *) toi_cur_sig_page;
-	}
-
-	toi_message(TOI_IO, TOI_VERBOSE, 0, "Reading signature from dev %lx,"
-			" sector %d.",
-			resume_block_device->bd_dev, resume_firstblock);
-
-	return toi_bio_ops.bdev_page_io(READ, resume_block_device,
-		resume_firstblock, virt_to_page(toi_cur_sig_page));
-}
-
-void forget_signature_page(void)
-{
-	if (toi_cur_sig_page) {
-		toi_sig_data = NULL;
-		toi_message(TOI_IO, TOI_VERBOSE, 0, "Freeing toi_cur_sig_page"
-				" (%p).", toi_cur_sig_page);
-		toi_free_page(38, (unsigned long) toi_cur_sig_page);
-		toi_cur_sig_page = NULL;
-	}
-
-	if (toi_orig_sig_page) {
-		toi_message(TOI_IO, TOI_VERBOSE, 0, "Freeing toi_orig_sig_page"
-				" (%p).", toi_orig_sig_page);
-		toi_free_page(38, (unsigned long) toi_orig_sig_page);
-		toi_orig_sig_page = NULL;
-	}
-}
-
-/*
- * We need to ensure we use the signature page that's currently on disk,
- * so as to not remove the image header. Post-atomic-restore, the orig sig
- * page will be empty, so we can use that as our method of knowing that we
- * need to load the on-disk signature and not use the non-image sig in
- * memory. (We're going to powerdown after writing the change, so it's safe.
- */
-int toi_bio_mark_resume_attempted(int flag)
-{
-	toi_message(TOI_IO, TOI_VERBOSE, 0, "Make resume attempted = %d.",
-			flag);
-	if (!toi_orig_sig_page) {
-		forget_signature_page();
-		get_signature_page();
-	}
-	toi_sig_data->resumed_before = flag;
-	return toi_bio_ops.bdev_page_io(WRITE, resume_block_device,
-		resume_firstblock, virt_to_page(toi_cur_sig_page));
-}
-
-int toi_bio_mark_have_image(void)
-{
-	int result = 0;
-	char buf[32];
-	struct fs_info *fs_info;
-
-	toi_message(TOI_IO, TOI_VERBOSE, 0, "Recording that an image exists.");
-	memcpy(toi_sig_data->sig, tuxonice_signature,
-			sizeof(tuxonice_signature));
-	toi_sig_data->have_image = 1;
-	toi_sig_data->resumed_before = 0;
-	toi_sig_data->header_dev_t = get_header_dev_t();
-	toi_sig_data->have_uuid = 0;
-
-	fs_info = fs_info_from_block_dev(get_header_bdev());
-	if (fs_info && !IS_ERR(fs_info)) {
-		memcpy(toi_sig_data->header_uuid, &fs_info->uuid, 16);
-		free_fs_info(fs_info);
-	} else
-		result = (int) PTR_ERR(fs_info);
-
-	if (!result) {
-		toi_message(TOI_IO, TOI_VERBOSE, 0, "Got uuid for dev_t %s.",
-				format_dev_t(buf, get_header_dev_t()));
-		toi_sig_data->have_uuid = 1;
-	} else
-		toi_message(TOI_IO, TOI_VERBOSE, 0, "Could not get uuid for "
-				"dev_t %s.",
-				format_dev_t(buf, get_header_dev_t()));
-
-	toi_sig_data->first_header_block = get_headerblock();
-	have_image = 1;
-	toi_message(TOI_IO, TOI_VERBOSE, 0, "header dev_t is %x. First block "
-			"is %d.", toi_sig_data->header_dev_t,
-			toi_sig_data->first_header_block);
-
-	memcpy(toi_sig_data->sig2, tuxonice_signature,
-			sizeof(tuxonice_signature));
-	toi_sig_data->header_version = TOI_HEADER_VERSION;
-
-	return toi_bio_ops.bdev_page_io(WRITE, resume_block_device,
-		resume_firstblock, virt_to_page(toi_cur_sig_page));
-}
-
-int remove_old_signature(void)
-{
-	union p_diskpage swap_header_page = (union p_diskpage) toi_cur_sig_page;
-	char *orig_sig;
-	char *header_start = (char *) toi_get_zeroed_page(38, TOI_ATOMIC_GFP);
-	int result;
-	struct block_device *header_bdev;
-	struct old_sig_data *old_sig_data =
-		&swap_header_page.pointer->old_sig_data;
-
-	header_bdev = toi_open_bdev(NULL, old_sig_data->device, 1);
-	result = toi_bio_ops.bdev_page_io(READ, header_bdev,
-			old_sig_data->sector, virt_to_page(header_start));
-
-	if (result)
-		goto out;
-
-	/*
-	 * TODO: Get the original contents of the first bytes of the swap
-	 * header page.
-	 */
-	if (!old_sig_data->orig_sig_type)
-		orig_sig = "SWAP-SPACE";
-	else
-		orig_sig = "SWAPSPACE2";
-
-	memcpy(swap_header_page.pointer->swh.magic.magic, orig_sig, 10);
-	memcpy(swap_header_page.ptr, header_start, 10);
-
-	result = toi_bio_ops.bdev_page_io(WRITE, resume_block_device,
-		resume_firstblock, virt_to_page(swap_header_page.ptr));
-
-out:
-	toi_close_bdev(header_bdev);
-	have_old_image = 0;
-	toi_free_page(38, (unsigned long) header_start);
-	return result;
-}
-
-/*
- * toi_bio_restore_original_signature - restore the original signature
- *
- * At boot time (aborting pre atomic-restore), toi_orig_sig_page gets used.
- * It will have the original signature page contents, stored in the image
- * header. Post atomic-restore, we use :toi_cur_sig_page, which will contain
- * the contents that were loaded when we started the cycle.
- */
-int toi_bio_restore_original_signature(void)
-{
-	char *use = toi_orig_sig_page ? toi_orig_sig_page : toi_cur_sig_page;
-
-	if (have_old_image)
-		return remove_old_signature();
-
-	if (!use) {
-		printk("toi_bio_restore_original_signature: No signature "
-				"page loaded.\n");
-		return 0;
-	}
-
-	toi_message(TOI_IO, TOI_VERBOSE, 0, "Recording that no image exists.");
-	have_image = 0;
-	toi_sig_data->have_image = 0;
-	return toi_bio_ops.bdev_page_io(WRITE, resume_block_device,
-		resume_firstblock, virt_to_page(use));
-}
-
-/*
- * check_for_signature - See whether we have an image.
- *
- * Returns 0 if no image, 1 if there is one, -1 if indeterminate.
- */
-int toi_check_for_signature(void)
-{
-	union p_diskpage swap_header_page;
-	int type;
-	const char *normal_sigs[] = {"SWAP-SPACE", "SWAPSPACE2" };
-	const char *swsusp_sigs[] = {"S1SUSP", "S2SUSP", "S1SUSPEND" };
-	char *swap_header;
-
-	if (!toi_cur_sig_page) {
-		int result = get_signature_page();
-
-		if (result)
-			return result;
-	}
-
-	/*
-	 * Start by looking for the binary header.
-	 */
-	if (!memcmp(tuxonice_signature, toi_cur_sig_page,
-				sizeof(tuxonice_signature))) {
-		have_image = toi_sig_data->have_image;
-		toi_message(TOI_IO, TOI_VERBOSE, 0, "Have binary signature. "
-				"Have image is %d.", have_image);
-		if (have_image)
-			toi_message(TOI_IO, TOI_VERBOSE, 0, "header dev_t is "
-					"%x. First block is %d.",
-					toi_sig_data->header_dev_t,
-					toi_sig_data->first_header_block);
-		return toi_sig_data->have_image;
-	}
-
-	/*
-	 * Failing that, try old file allocator headers.
-	 */
-
-	if (!memcmp(HaveImage, toi_cur_sig_page, strlen(HaveImage))) {
-		have_image = 1;
-		return 1;
-	}
-
-	have_image = 0;
-
-	if (!memcmp(NoImage, toi_cur_sig_page, strlen(NoImage)))
-		return 0;
-
-	/*
-	 * Nope? How about swap?
-	 */
-	swap_header_page = (union p_diskpage) toi_cur_sig_page;
-	swap_header = swap_header_page.pointer->swh.magic.magic;
-
-	/* Normal swapspace? */
-	for (type = 0; type < 2; type++)
-		if (!memcmp(normal_sigs[type], swap_header,
-					strlen(normal_sigs[type])))
-			return 0;
-
-	/* Swsusp or uswsusp? */
-	for (type = 0; type < 3; type++)
-		if (!memcmp(swsusp_sigs[type], swap_header,
-					strlen(swsusp_sigs[type])))
-			return 2;
-
-	/* Old TuxOnIce version? */
-	if (!memcmp(tuxonice_signature, swap_header,
-				sizeof(tuxonice_signature) - 1)) {
-		toi_message(TOI_IO, TOI_VERBOSE, 0, "Found old TuxOnIce "
-				"signature.");
-		have_old_image = 1;
-		return 3;
-	}
-
-	return -1;
-}
-
-/*
- * Image_exists
- *
- * Returns -1 if don't know, otherwise 0 (no) or 1 (yes).
- */
-int toi_bio_image_exists(int quiet)
-{
-	int result;
-	char *msg = NULL;
-
-	toi_message(TOI_IO, TOI_VERBOSE, 0, "toi_bio_image_exists.");
-
-	if (!resume_dev_t) {
-		if (!quiet)
-			printk(KERN_INFO "Not even trying to read header "
-				"because resume_dev_t is not set.\n");
-		return -1;
-	}
-
-	if (open_resume_dev_t(0, quiet))
-		return -1;
-
-	result = toi_check_for_signature();
-
-	clear_toi_state(TOI_RESUMED_BEFORE);
-	if (toi_sig_data->resumed_before)
-		set_toi_state(TOI_RESUMED_BEFORE);
-
-	if (quiet || result == -ENOMEM)
-		return result;
-
-	if (result == -1)
-		msg = "TuxOnIce: Unable to find a signature."
-				" Could you have moved a swap file?\n";
-	else if (!result)
-		msg = "TuxOnIce: No image found.\n";
-	else if (result == 1)
-		msg = "TuxOnIce: Image found.\n";
-	else if (result == 2)
-		msg = "TuxOnIce: uswsusp or swsusp image found.\n";
-	else if (result == 3)
-		msg = "TuxOnIce: Old implementation's signature found.\n";
-
-	printk(KERN_INFO "%s", msg);
-
-	return result;
-}
-
-int toi_bio_scan_for_image(int quiet)
-{
-	struct block_device *bdev;
-	char default_name[255] = "";
-
-	if (!quiet)
-		printk(KERN_DEBUG "Scanning swap devices for TuxOnIce "
-				"signature...\n");
-	for (bdev = next_bdev_of_type(NULL, "swap"); bdev;
-				bdev = next_bdev_of_type(bdev, "swap")) {
-		int result;
-		char name[255] = "";
-		sprintf(name, "%u:%u", MAJOR(bdev->bd_dev),
-				MINOR(bdev->bd_dev));
-		if (!quiet)
-			printk(KERN_DEBUG "- Trying %s.\n", name);
-		resume_block_device = bdev;
-		resume_dev_t = bdev->bd_dev;
-
-		result = toi_check_for_signature();
-
-		resume_block_device = NULL;
-		resume_dev_t = MKDEV(0, 0);
-
-		if (!default_name[0])
-			strcpy(default_name, name);
-
-		if (result == 1) {
-			/* Got one! */
-			strcpy(resume_file, name);
-			next_bdev_of_type(bdev, NULL);
-			if (!quiet)
-				printk(KERN_DEBUG " ==> Image found on %s.\n",
-						resume_file);
-			return 1;
-		}
-		forget_signature_page();
-	}
-
-	if (!quiet)
-		printk(KERN_DEBUG "TuxOnIce scan: No image found.\n");
-	strcpy(resume_file, default_name);
-	return 0;
-}
-
-int toi_bio_get_header_version(void)
-{
-	return (memcmp(toi_sig_data->sig2, tuxonice_signature,
-				sizeof(tuxonice_signature))) ?
-		0 : toi_sig_data->header_version;
-
-}