LU-12275 sec: remove bio functions in fscrypt compat

[fs/lustre-release.git] / libcfs / libcfs / crypto / bio.c

diff --git a/libcfs/libcfs/crypto/bio.c b/libcfs/libcfs/crypto/bio.c
deleted file mode 100644 (file)
index 78b56cb..0000000
--- a/libcfs/libcfs/crypto/bio.c
+++ /dev/null
@@ -1,128 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-/*
- * This contains encryption functions for per-file encryption.
- *
- * Copyright (C) 2015, Google, Inc.
- * Copyright (C) 2015, Motorola Mobility
- *
- * Written by Michael Halcrow, 2014.
- *
- * Filename encryption additions
- *     Uday Savagaonkar, 2014
- * Encryption policy handling additions
- *     Ildar Muslukhov, 2014
- * Add llcrypt_pullback_bio_page()
- *     Jaegeuk Kim, 2015.
- *
- * This has not yet undergone a rigorous security audit.
- *
- * The usage of AES-XTS should conform to recommendations in NIST
- * Special Publication 800-38E and IEEE P1619/D16.
- */
-/*
- * Linux commit 219d54332a09
- * tags/v5.4
- */
-
-#include <linux/pagemap.h>
-#include <linux/module.h>
-#include <linux/bio.h>
-#include <linux/namei.h>
-#include <lustre_compat.h>
-#include "llcrypt_private.h"
-
-static void __llcrypt_decrypt_bio(struct bio *bio, bool done)
-{
-       struct bio_vec *bv;
-#ifdef HAVE_BVEC_ITER_ALL
-       struct bvec_iter_all iter_all;
-#else
-       int iter_all;
-#endif
-
-       bio_for_each_segment_all(bv, bio, iter_all) {
-               struct page *page = bv->bv_page;
-               int ret = llcrypt_decrypt_pagecache_blocks(page, bv->bv_len,
-                                                          bv->bv_offset);
-               if (ret)
-                       SetPageError(page);
-               else if (done)
-                       SetPageUptodate(page);
-               if (done)
-                       unlock_page(page);
-       }
-}
-
-void llcrypt_decrypt_bio(struct bio *bio)
-{
-       __llcrypt_decrypt_bio(bio, false);
-}
-EXPORT_SYMBOL(llcrypt_decrypt_bio);
-
-static void completion_pages(struct work_struct *work)
-{
-       struct llcrypt_ctx *ctx = container_of(work, struct llcrypt_ctx, work);
-       struct bio *bio = ctx->bio;
-
-       __llcrypt_decrypt_bio(bio, true);
-       llcrypt_release_ctx(ctx);
-       bio_put(bio);
-}
-
-void llcrypt_enqueue_decrypt_bio(struct llcrypt_ctx *ctx, struct bio *bio)
-{
-       INIT_WORK(&ctx->work, completion_pages);
-       ctx->bio = bio;
-       llcrypt_enqueue_decrypt_work(&ctx->work);
-}
-EXPORT_SYMBOL(llcrypt_enqueue_decrypt_bio);
-
-int llcrypt_zeroout_range(const struct inode *inode, pgoff_t lblk,
-                               sector_t pblk, unsigned int len)
-{
-       const unsigned int blockbits = inode->i_blkbits;
-       const unsigned int blocksize = 1 << blockbits;
-       struct page *ciphertext_page;
-       struct bio *bio;
-       int ret, err = 0;
-
-       ciphertext_page = llcrypt_alloc_bounce_page(GFP_NOWAIT);
-       if (!ciphertext_page)
-               return -ENOMEM;
-
-       while (len--) {
-               err = llcrypt_crypt_block(inode, FS_ENCRYPT, lblk,
-                                         ZERO_PAGE(0), ciphertext_page,
-                                         blocksize, 0, GFP_NOFS);
-               if (err)
-                       goto errout;
-
-               bio = cfs_bio_alloc(inode->i_sb->s_bdev, 1, REQ_OP_WRITE,
-                                   GFP_NOWAIT);
-               if (!bio) {
-                       err = -ENOMEM;
-                       goto errout;
-               }
-               bio->bi_iter.bi_sector = pblk << (blockbits - 9);
-               ret = bio_add_page(bio, ciphertext_page, blocksize, 0);
-               if (WARN_ON(ret != blocksize)) {
-                       /* should never happen! */
-                       bio_put(bio);
-                       err = -EIO;
-                       goto errout;
-               }
-               err = submit_bio_wait(bio);
-               if (err == 0 && bio->bi_status)
-                       err = -EIO;
-               bio_put(bio);
-               if (err)
-                       goto errout;
-               lblk++;
-               pblk++;
-       }
-       err = 0;
-errout:
-       llcrypt_free_bounce_page(ciphertext_page);
-       return err;
-}
-EXPORT_SYMBOL(llcrypt_zeroout_range);