1 // SPDX-License-Identifier: GPL-2.0-only
3  * Copyright (c) 2000-2001 Christoph Hellwig.
7  * Veritas filesystem driver - filesystem to disk block mapping.
22 	printk(KERN_DEBUG "type=%Lu ", typ->vt_hdr >> VXFS_TYPED_TYPESHIFT);  in vxfs_typdump()
23 	printk("offset=%Lx ", typ->vt_hdr & VXFS_TYPED_OFFSETMASK);  in vxfs_typdump()
24 	printk("block=%x ", typ->vt_block);  in vxfs_typdump()
25 	printk("size=%x\n", typ->vt_size);  in vxfs_typdump()
30  * vxfs_bmap_ext4 - do bmap for ext4 extents
31  * @ip:		pointer to the inode we do bmap for
32  * @bn:		logical block.
36  *   ext4-style extents (which are much like the traditional UNIX
40  *   The physical block number on success, else Zero.
43 vxfs_bmap_ext4(struct inode *ip, long bn)  in vxfs_bmap_ext4()  argument
45 	struct super_block *sb = ip->i_sb;  in vxfs_bmap_ext4()
46 	struct vxfs_inode_info *vip = VXFS_INO(ip);  in vxfs_bmap_ext4()
48 	unsigned long bsize = sb->s_blocksize;  in vxfs_bmap_ext4()
49 	u32 indsize = fs32_to_cpu(sbi, vip->vii_ext4.ve4_indsize);  in vxfs_bmap_ext4()
52 	if (indsize > sb->s_blocksize)  in vxfs_bmap_ext4()
56 		struct direct *d = vip->vii_ext4.ve4_direct + i;  in vxfs_bmap_ext4()
57 		if (bn >= 0 && bn < fs32_to_cpu(sbi, d->size))  in vxfs_bmap_ext4()
58 			return (bn + fs32_to_cpu(sbi, d->extent));  in vxfs_bmap_ext4()
59 		bn -= fs32_to_cpu(sbi, d->size);  in vxfs_bmap_ext4()
68 			fs32_to_cpu(sbi, vip->vii_ext4.ve4_indir[0]));  in vxfs_bmap_ext4()
72 		indir = (__fs32 *)buf->b_data;  in vxfs_bmap_ext4()
90  * vxfs_bmap_indir - recursion for vxfs_bmap_typed
91  * @ip:		pointer to the inode we do bmap for
92  * @indir:	indirect block we start reading at
94  * @block:	partially result from further searches
98  *   and performs the type-defined action.
101  *   The physical block number on success, else Zero.
107 vxfs_bmap_indir(struct inode *ip, long indir, int size, long block)  in vxfs_bmap_indir()  argument
109 	struct vxfs_sb_info		*sbi = VXFS_SBI(ip->i_sb);  in vxfs_bmap_indir()
114 	for (i = 0; i < size * VXFS_TYPED_PER_BLOCK(ip->i_sb); i++) {  in vxfs_bmap_indir()
118 		bp = sb_bread(ip->i_sb,  in vxfs_bmap_indir()
119 				indir + (i / VXFS_TYPED_PER_BLOCK(ip->i_sb)));  in vxfs_bmap_indir()
123 		typ = ((struct vxfs_typed *)bp->b_data) +  in vxfs_bmap_indir()
124 			(i % VXFS_TYPED_PER_BLOCK(ip->i_sb));  in vxfs_bmap_indir()
125 		off = fs64_to_cpu(sbi, typ->vt_hdr) & VXFS_TYPED_OFFSETMASK;  in vxfs_bmap_indir()
127 		if (block < off) {  in vxfs_bmap_indir()
132 		switch ((u_int32_t)(fs64_to_cpu(sbi, typ->vt_hdr) >>  in vxfs_bmap_indir()
135 			pblock = vxfs_bmap_indir(ip,  in vxfs_bmap_indir()
136 					fs32_to_cpu(sbi, typ->vt_block),  in vxfs_bmap_indir()
137 					fs32_to_cpu(sbi, typ->vt_size),  in vxfs_bmap_indir()
138 					block - off);  in vxfs_bmap_indir()
139 			if (pblock == -2)  in vxfs_bmap_indir()
143 			if ((block - off) >= fs32_to_cpu(sbi, typ->vt_size))  in vxfs_bmap_indir()
145 			pblock = fs32_to_cpu(sbi, typ->vt_block) + block - off;  in vxfs_bmap_indir()
153 			printk(KERN_INFO "block: %llu\tsize: %lld\tdev: %d\n",  in vxfs_bmap_indir()
154 			       fs64_to_cpu(sbi, typ4->vd4_block),  in vxfs_bmap_indir()
155 			       fs64_to_cpu(sbi, typ4->vd4_size),  in vxfs_bmap_indir()
156 			       fs32_to_cpu(sbi, typ4->vd4_dev));  in vxfs_bmap_indir()
161 				__LINE__, fs64_to_cpu(sbi, typ->vt_hdr));  in vxfs_bmap_indir()
175  * vxfs_bmap_typed - bmap for typed extents
176  * @ip:		pointer to the inode we do bmap for
177  * @iblock:	logical block
183  *   The physical block number on success, else Zero.
186 vxfs_bmap_typed(struct inode *ip, long iblock)  in vxfs_bmap_typed()  argument
188 	struct vxfs_inode_info		*vip = VXFS_INO(ip);  in vxfs_bmap_typed()
189 	struct vxfs_sb_info		*sbi = VXFS_SBI(ip->i_sb);  in vxfs_bmap_typed()
194 		struct vxfs_typed	*typ = vip->vii_org.typed + i;  in vxfs_bmap_typed()
195 		u64			hdr = fs64_to_cpu(sbi, typ->vt_hdr);  in vxfs_bmap_typed()
205 			pblock = vxfs_bmap_indir(ip,  in vxfs_bmap_typed()
206 					fs32_to_cpu(sbi, typ->vt_block),  in vxfs_bmap_typed()
207 					fs32_to_cpu(sbi, typ->vt_size),  in vxfs_bmap_typed()
208 					iblock - off);  in vxfs_bmap_typed()
209 			if (pblock == -2)  in vxfs_bmap_typed()
213 			if ((iblock - off) < fs32_to_cpu(sbi, typ->vt_size))  in vxfs_bmap_typed()
214 				return (fs32_to_cpu(sbi, typ->vt_block) +  in vxfs_bmap_typed()
215 						iblock - off);  in vxfs_bmap_typed()
223 			printk(KERN_INFO "block: %llu\tsize: %lld\tdev: %d\n",  in vxfs_bmap_typed()
224 			       fs64_to_cpu(sbi, typ4->vd4_block),  in vxfs_bmap_typed()
225 			       fs64_to_cpu(sbi, typ4->vd4_size),  in vxfs_bmap_typed()
226 			       fs32_to_cpu(sbi, typ4->vd4_dev));  in vxfs_bmap_typed()
238  * vxfs_bmap1 - vxfs-internal bmap operation
239  * @ip:			pointer to the inode we do bmap for
240  * @iblock:		logical block
243  *   vxfs_bmap1 perfoms a logical to physical block mapping
244  *   for vxfs-internal purposes.
247  *   The physical block number on success, else Zero.
250 vxfs_bmap1(struct inode *ip, long iblock)  in vxfs_bmap1()  argument
252 	struct vxfs_inode_info		*vip = VXFS_INO(ip);  in vxfs_bmap1()
255 		return vxfs_bmap_ext4(ip, iblock);  in vxfs_bmap1()
257 		return vxfs_bmap_typed(ip, iblock);  in vxfs_bmap1()
264 			ip->i_ino, vip->vii_orgtype);  in vxfs_bmap1()
269 			ip->i_ino, vip->vii_orgtype);  in vxfs_bmap1()