Linux-libre 4.8.3-gnupck-4.8.3-gnu

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 f5418f092..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;
-
-}