add ax88772_rst

hc

2024-05-10 9999e48639b3cecb08ffb37358bcba3b48161b29

 kernel/fs/bfs/inode.c
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..
@@ -1,10 +1,10 @@
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+// SPDX-License-Identifier: GPL-2.0-only
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 /*
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  *	fs/bfs/inode.c
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  *	BFS superblock and inode operations.
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- *	Copyright (C) 1999-2006 Tigran Aivazian <aivazian.tigran@gmail.com>
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+ *	Copyright (C) 1999-2018 Tigran Aivazian <aivazian.tigran@gmail.com>
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  *	From fs/minix, Copyright (C) 1991, 1992 Linus Torvalds.
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- *
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- *      Made endianness-clean by Andrew Stribblehill <ads@wompom.org>, 2005.
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+ *	Made endianness-clean by Andrew Stribblehill <ads@wompom.org>, 2005.
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  */
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9
 
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 #include <linux/module.h>
..
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@@ -22,6 +22,7 @@
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 MODULE_AUTHOR("Tigran Aivazian <aivazian.tigran@gmail.com>");
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 MODULE_DESCRIPTION("SCO UnixWare BFS filesystem for Linux");
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 MODULE_LICENSE("GPL");
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+MODULE_IMPORT_NS(ANDROID_GKI_VFS_EXPORT_ONLY);
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26
 
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 #undef DEBUG
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28
 
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@@ -118,12 +119,12 @@
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 {
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 	struct bfs_sb_info *info = BFS_SB(inode->i_sb);
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 	unsigned int ino = (u16)inode->i_ino;
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-        unsigned long i_sblock;
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+	unsigned long i_sblock;
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 	struct bfs_inode *di;
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 	struct buffer_head *bh;
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 	int err = 0;
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-        dprintf("ino=%08x\n", ino);
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+	dprintf("ino=%08x\n", ino);
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 	di = find_inode(inode->i_sb, ino, &bh);
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 	if (IS_ERR(di))
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@@ -144,7 +145,7 @@
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 	di->i_atime = cpu_to_le32(inode->i_atime.tv_sec);
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 	di->i_mtime = cpu_to_le32(inode->i_mtime.tv_sec);
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 	di->i_ctime = cpu_to_le32(inode->i_ctime.tv_sec);
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-        i_sblock = BFS_I(inode)->i_sblock;
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+	i_sblock = BFS_I(inode)->i_sblock;
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 	di->i_sblock = cpu_to_le32(i_sblock);
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 	di->i_eblock = cpu_to_le32(BFS_I(inode)->i_eblock);
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 	di->i_eoffset = cpu_to_le32(i_sblock * BFS_BSIZE + inode->i_size - 1);
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@@ -188,13 +189,13 @@
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 	mark_buffer_dirty(bh);
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 	brelse(bh);
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-        if (bi->i_dsk_ino) {
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+	if (bi->i_dsk_ino) {
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 		if (bi->i_sblock)
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 			info->si_freeb += bi->i_eblock + 1 - bi->i_sblock;
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 		info->si_freei++;
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 		clear_bit(ino, info->si_imap);
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-		bfs_dump_imap("delete_inode", s);
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-        }
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+		bfs_dump_imap("evict_inode", s);
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+	}
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 	/*
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 	 * If this was the last file, make the previous block
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@@ -214,7 +215,6 @@
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 		return;
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 	mutex_destroy(&info->bfs_lock);
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-	kfree(info->si_imap);
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 	kfree(info);
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 	s->s_fs_info = NULL;
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 }
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@@ -230,8 +230,7 @@
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 	buf->f_bfree = buf->f_bavail = info->si_freeb;
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 	buf->f_files = info->si_lasti + 1 - BFS_ROOT_INO;
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 	buf->f_ffree = info->si_freei;
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-	buf->f_fsid.val[0] = (u32)id;
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-	buf->f_fsid.val[1] = (u32)(id >> 32);
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+	buf->f_fsid = u64_to_fsid(id);
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 	buf->f_namelen = BFS_NAMELEN;
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 	return 0;
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 }
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@@ -247,15 +246,9 @@
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 	return &bi->vfs_inode;
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 }
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-static void bfs_i_callback(struct rcu_head *head)
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+static void bfs_free_inode(struct inode *inode)
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 {
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-	struct inode *inode = container_of(head, struct inode, i_rcu);
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 	kmem_cache_free(bfs_inode_cachep, BFS_I(inode));
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-}
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-
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-static void bfs_destroy_inode(struct inode *inode)
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-{
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-	call_rcu(&inode->i_rcu, bfs_i_callback);
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252
 }
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253
 
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 static void init_once(void *foo)
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@@ -289,7 +282,7 @@
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 static const struct super_operations bfs_sops = {
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 	.alloc_inode	= bfs_alloc_inode,
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-	.destroy_inode	= bfs_destroy_inode,
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+	.free_inode	= bfs_free_inode,
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 	.write_inode	= bfs_write_inode,
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 	.evict_inode	= bfs_evict_inode,
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 	.put_super	= bfs_put_super,
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@@ -311,8 +304,7 @@
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 		else
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 			strcat(tmpbuf, "0");
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 	}
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-	printf("BFS-fs: %s: lasti=%08lx <%s>\n",
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-				prefix, BFS_SB(s)->si_lasti, tmpbuf);
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+	printf("%s: lasti=%08lx <%s>\n", prefix, BFS_SB(s)->si_lasti, tmpbuf);
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 	free_page((unsigned long)tmpbuf);
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 #endif
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 }
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@@ -322,7 +314,7 @@
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 	struct buffer_head *bh, *sbh;
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 	struct bfs_super_block *bfs_sb;
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 	struct inode *inode;
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-	unsigned i, imap_len;
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+	unsigned i;
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318
 	struct bfs_sb_info *info;
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319
 	int ret = -EINVAL;
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320
 	unsigned long i_sblock, i_eblock, i_eoff, s_size;
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@@ -332,6 +324,8 @@
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324
 		return -ENOMEM;
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 	mutex_init(&info->bfs_lock);
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326
 	s->s_fs_info = info;
327
+	s->s_time_min = 0;
328
+	s->s_time_max = U32_MAX;
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329
 
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 	sb_set_blocksize(s, BFS_BSIZE);
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331
 
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@@ -341,8 +335,7 @@
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 	bfs_sb = (struct bfs_super_block *)sbh->b_data;
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336
 	if (le32_to_cpu(bfs_sb->s_magic) != BFS_MAGIC) {
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337
 		if (!silent)
344
-			printf("No BFS filesystem on %s (magic=%08x)\n", 
345
-				s->s_id,  le32_to_cpu(bfs_sb->s_magic));
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+			printf("No BFS filesystem on %s (magic=%08x)\n", s->s_id,  le32_to_cpu(bfs_sb->s_magic));
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339
 		goto out1;
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340
 	}
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 	if (BFS_UNCLEAN(bfs_sb, s) && !silent)
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@@ -351,18 +344,16 @@
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344
 	s->s_magic = BFS_MAGIC;
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345
 
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 	if (le32_to_cpu(bfs_sb->s_start) > le32_to_cpu(bfs_sb->s_end) ||
354
-	    le32_to_cpu(bfs_sb->s_start) < BFS_BSIZE) {
355
-		printf("Superblock is corrupted\n");
347
+	    le32_to_cpu(bfs_sb->s_start) < sizeof(struct bfs_super_block) + sizeof(struct bfs_dirent)) {
348
+		printf("Superblock is corrupted on %s\n", s->s_id);
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349
 		goto out1;
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350
 	}
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351
 
359
-	info->si_lasti = (le32_to_cpu(bfs_sb->s_start) - BFS_BSIZE) /
360
-					sizeof(struct bfs_inode)
361
-					+ BFS_ROOT_INO - 1;
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-	imap_len = (info->si_lasti / 8) + 1;
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-	info->si_imap = kzalloc(imap_len, GFP_KERNEL | __GFP_NOWARN);
364
-	if (!info->si_imap) {
365
-		printf("Cannot allocate %u bytes\n", imap_len);
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+	info->si_lasti = (le32_to_cpu(bfs_sb->s_start) - BFS_BSIZE) / sizeof(struct bfs_inode) + BFS_ROOT_INO - 1;
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+	if (info->si_lasti == BFS_MAX_LASTI)
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+		printf("NOTE: filesystem %s was created with 512 inodes, the real maximum is 511, mounting anyway\n", s->s_id);
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+	else if (info->si_lasti > BFS_MAX_LASTI) {
356
+		printf("Impossible last inode number %lu > %d on %s\n", info->si_lasti, BFS_MAX_LASTI, s->s_id);
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357
 		goto out1;
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358
 	}
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359
 	for (i = 0; i < BFS_ROOT_INO; i++)
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@@ -372,26 +363,25 @@
372
363
 	inode = bfs_iget(s, BFS_ROOT_INO);
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364
 	if (IS_ERR(inode)) {
374
365
 		ret = PTR_ERR(inode);
375
-		goto out2;
366
+		goto out1;
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367
 	}
377
368
 	s->s_root = d_make_root(inode);
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369
 	if (!s->s_root) {
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370
 		ret = -ENOMEM;
380
-		goto out2;
371
+		goto out1;
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372
 	}
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373
 
383
374
 	info->si_blocks = (le32_to_cpu(bfs_sb->s_end) + 1) >> BFS_BSIZE_BITS;
384
-	info->si_freeb = (le32_to_cpu(bfs_sb->s_end) + 1
385
-			- le32_to_cpu(bfs_sb->s_start)) >> BFS_BSIZE_BITS;
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+	info->si_freeb = (le32_to_cpu(bfs_sb->s_end) + 1 - le32_to_cpu(bfs_sb->s_start)) >> BFS_BSIZE_BITS;
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376
 	info->si_freei = 0;
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377
 	info->si_lf_eblk = 0;
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378
 
389
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 	/* can we read the last block? */
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 	bh = sb_bread(s, info->si_blocks - 1);
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 	if (!bh) {
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-		printf("Last block not available: %lu\n", info->si_blocks - 1);
382
+		printf("Last block not available on %s: %lu\n", s->s_id, info->si_blocks - 1);
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 		ret = -EIO;
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-		goto out3;
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+		goto out2;
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 	}
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386
 	brelse(bh);
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387
 
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@@ -425,11 +415,11 @@
425
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 			(i_eoff != le32_to_cpu(-1) && i_eoff > s_size) ||
426
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 			i_sblock * BFS_BSIZE > i_eoff) {
427
417
 
428
-			printf("Inode 0x%08x corrupted\n", i);
418
+			printf("Inode 0x%08x corrupted on %s\n", i, s->s_id);
429
419
 
430
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 			brelse(bh);
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 			ret = -EIO;
432
-			goto out3;
422
+			goto out2;
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423
 		}
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424
 
435
425
 		if (!di->i_ino) {
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@@ -445,14 +435,12 @@
445
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 	}
446
436
 	brelse(bh);
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 	brelse(sbh);
448
-	bfs_dump_imap("read_super", s);
438
+	bfs_dump_imap("fill_super", s);
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 	return 0;
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440
 
451
-out3:
441
+out2:
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 	dput(s->s_root);
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 	s->s_root = NULL;
454
-out2:
455
-	kfree(info->si_imap);
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444
 out1:
457
445
 	brelse(sbh);
458
446
 out:
..
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@@ -482,7 +470,7 @@
482
470
 	int err = init_inodecache();
483
471
 	if (err)
484
472
 		goto out1;
485
-        err = register_filesystem(&bfs_fs_type);
473
+	err = register_filesystem(&bfs_fs_type);
486
474
 	if (err)
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 		goto out;
488
476
 	return 0;