Orange Pi5 kernel

^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   1) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   2)  * Copyright (c) 2000-2001 Christoph Hellwig.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   3)  * All rights reserved.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   4)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   5)  * Redistribution and use in source and binary forms, with or without
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   6)  * modification, are permitted provided that the following conditions
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   7)  * are met:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   8)  * 1. Redistributions of source code must retain the above copyright
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   9)  *    notice, this list of conditions, and the following disclaimer,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  10)  *    without modification.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  11)  * 2. The name of the author may not be used to endorse or promote products
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  12)  *    derived from this software without specific prior written permission.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  13)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  14)  * Alternatively, this software may be distributed under the terms of the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  15)  * GNU General Public License ("GPL").
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  16)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  17)  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  18)  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  19)  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  20)  * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  21)  * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  22)  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  23)  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  24)  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  25)  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  26)  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  27)  * SUCH DAMAGE.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  28)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  29) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  30) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  31)  * Veritas filesystem driver - filesystem to disk block mapping.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  32)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  33) #include <linux/fs.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  34) #include <linux/buffer_head.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  35) #include <linux/kernel.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  36) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  37) #include "vxfs.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  38) #include "vxfs_inode.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  39) #include "vxfs_extern.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  40) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  41) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  42) #ifdef DIAGNOSTIC
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  43) static void
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  44) vxfs_typdump(struct vxfs_typed *typ)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  45) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  46) 	printk(KERN_DEBUG "type=%Lu ", typ->vt_hdr >> VXFS_TYPED_TYPESHIFT);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  47) 	printk("offset=%Lx ", typ->vt_hdr & VXFS_TYPED_OFFSETMASK);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  48) 	printk("block=%x ", typ->vt_block);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  49) 	printk("size=%x\n", typ->vt_size);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  50) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  51) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  52) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  53) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  54)  * vxfs_bmap_ext4 - do bmap for ext4 extents
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  55)  * @ip:		pointer to the inode we do bmap for
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  56)  * @iblock:	logical block.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  57)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  58)  * Description:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  59)  *   vxfs_bmap_ext4 performs the bmap operation for inodes with
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  60)  *   ext4-style extents (which are much like the traditional UNIX
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  61)  *   inode organisation).
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  62)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  63)  * Returns:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  64)  *   The physical block number on success, else Zero.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  65)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  66) static daddr_t
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  67) vxfs_bmap_ext4(struct inode *ip, long bn)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  68) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  69) 	struct super_block *sb = ip->i_sb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  70) 	struct vxfs_inode_info *vip = VXFS_INO(ip);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  71) 	struct vxfs_sb_info *sbi = VXFS_SBI(sb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  72) 	unsigned long bsize = sb->s_blocksize;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  73) 	u32 indsize = fs32_to_cpu(sbi, vip->vii_ext4.ve4_indsize);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  74) 	int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  75) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  76) 	if (indsize > sb->s_blocksize)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  77) 		goto fail_size;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  78) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  79) 	for (i = 0; i < VXFS_NDADDR; i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  80) 		struct direct *d = vip->vii_ext4.ve4_direct + i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  81) 		if (bn >= 0 && bn < fs32_to_cpu(sbi, d->size))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  82) 			return (bn + fs32_to_cpu(sbi, d->extent));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  83) 		bn -= fs32_to_cpu(sbi, d->size);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  84) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  85) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  86) 	if ((bn / (indsize * indsize * bsize / 4)) == 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  87) 		struct buffer_head *buf;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  88) 		daddr_t	bno;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  89) 		__fs32 *indir;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  90) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  91) 		buf = sb_bread(sb,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  92) 			fs32_to_cpu(sbi, vip->vii_ext4.ve4_indir[0]));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  93) 		if (!buf || !buffer_mapped(buf))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  94) 			goto fail_buf;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  95) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  96) 		indir = (__fs32 *)buf->b_data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  97) 		bno = fs32_to_cpu(sbi, indir[(bn / indsize) % (indsize * bn)]) +
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  98) 			(bn % indsize);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  99) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) 		brelse(buf);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) 		return bno;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) 	} else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) 		printk(KERN_WARNING "no matching indir?");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) fail_size:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) 	printk("vxfs: indirect extent too big!\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) fail_buf:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114)  * vxfs_bmap_indir - recursion for vxfs_bmap_typed
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115)  * @ip:		pointer to the inode we do bmap for
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116)  * @indir:	indirect block we start reading at
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117)  * @size:	size of the typed area to search
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118)  * @block:	partially result from further searches
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120)  * Description:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121)  *   vxfs_bmap_indir reads a &struct vxfs_typed at @indir
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122)  *   and performs the type-defined action.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124)  * Return Value:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125)  *   The physical block number on success, else Zero.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127)  * Note:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128)  *   Kernelstack is rare.  Unrecurse?
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) static daddr_t
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) vxfs_bmap_indir(struct inode *ip, long indir, int size, long block)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) 	struct vxfs_sb_info		*sbi = VXFS_SBI(ip->i_sb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) 	struct buffer_head		*bp = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) 	daddr_t				pblock = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) 	int				i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) 	for (i = 0; i < size * VXFS_TYPED_PER_BLOCK(ip->i_sb); i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) 		struct vxfs_typed	*typ;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) 		int64_t			off;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) 		bp = sb_bread(ip->i_sb,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) 				indir + (i / VXFS_TYPED_PER_BLOCK(ip->i_sb)));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) 		if (!bp || !buffer_mapped(bp))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) 			return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) 		typ = ((struct vxfs_typed *)bp->b_data) +
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) 			(i % VXFS_TYPED_PER_BLOCK(ip->i_sb));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) 		off = fs64_to_cpu(sbi, typ->vt_hdr) & VXFS_TYPED_OFFSETMASK;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) 		if (block < off) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) 			brelse(bp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) 			continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) 		}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) 		switch ((u_int32_t)(fs64_to_cpu(sbi, typ->vt_hdr) >>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) 				VXFS_TYPED_TYPESHIFT)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) 		case VXFS_TYPED_INDIRECT:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) 			pblock = vxfs_bmap_indir(ip,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) 					fs32_to_cpu(sbi, typ->vt_block),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) 					fs32_to_cpu(sbi, typ->vt_size),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) 					block - off);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) 			if (pblock == -2)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) 				break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) 			goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) 		case VXFS_TYPED_DATA:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) 			if ((block - off) >= fs32_to_cpu(sbi, typ->vt_size))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) 				break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) 			pblock = fs32_to_cpu(sbi, typ->vt_block) + block - off;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) 			goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) 		case VXFS_TYPED_INDIRECT_DEV4:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) 		case VXFS_TYPED_DATA_DEV4: {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) 			struct vxfs_typed_dev4	*typ4 =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) 				(struct vxfs_typed_dev4 *)typ;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) 			printk(KERN_INFO "\n\nTYPED_DEV4 detected!\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) 			printk(KERN_INFO "block: %llu\tsize: %lld\tdev: %d\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) 			       fs64_to_cpu(sbi, typ4->vd4_block),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) 			       fs64_to_cpu(sbi, typ4->vd4_size),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) 			       fs32_to_cpu(sbi, typ4->vd4_dev));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) 			goto fail;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) 		}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) 		default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) 			printk(KERN_ERR "%s:%d vt_hdr %llu\n", __func__,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) 				__LINE__, fs64_to_cpu(sbi, typ->vt_hdr));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) 			BUG();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) 		}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) 		brelse(bp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) fail:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) 	pblock = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) out:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) 	brelse(bp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) 	return (pblock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199)  * vxfs_bmap_typed - bmap for typed extents
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200)  * @ip:		pointer to the inode we do bmap for
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201)  * @iblock:	logical block
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203)  * Description:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204)  *   Performs the bmap operation for typed extents.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206)  * Return Value:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207)  *   The physical block number on success, else Zero.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) static daddr_t
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) vxfs_bmap_typed(struct inode *ip, long iblock)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) 	struct vxfs_inode_info		*vip = VXFS_INO(ip);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) 	struct vxfs_sb_info		*sbi = VXFS_SBI(ip->i_sb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) 	daddr_t				pblock = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) 	int				i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) 	for (i = 0; i < VXFS_NTYPED; i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) 		struct vxfs_typed	*typ = vip->vii_org.typed + i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) 		u64			hdr = fs64_to_cpu(sbi, typ->vt_hdr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) 		int64_t			off = (hdr & VXFS_TYPED_OFFSETMASK);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) #ifdef DIAGNOSTIC
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) 		vxfs_typdump(typ);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225) 		if (iblock < off)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) 			continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227) 		switch ((u32)(hdr >> VXFS_TYPED_TYPESHIFT)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228) 		case VXFS_TYPED_INDIRECT:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229) 			pblock = vxfs_bmap_indir(ip,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230) 					fs32_to_cpu(sbi, typ->vt_block),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231) 					fs32_to_cpu(sbi, typ->vt_size),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) 					iblock - off);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233) 			if (pblock == -2)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234) 				break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235) 			return (pblock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236) 		case VXFS_TYPED_DATA:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237) 			if ((iblock - off) < fs32_to_cpu(sbi, typ->vt_size))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238) 				return (fs32_to_cpu(sbi, typ->vt_block) +
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239) 						iblock - off);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240) 			break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241) 		case VXFS_TYPED_INDIRECT_DEV4:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242) 		case VXFS_TYPED_DATA_DEV4: {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243) 			struct vxfs_typed_dev4	*typ4 =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244) 				(struct vxfs_typed_dev4 *)typ;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246) 			printk(KERN_INFO "\n\nTYPED_DEV4 detected!\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247) 			printk(KERN_INFO "block: %llu\tsize: %lld\tdev: %d\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248) 			       fs64_to_cpu(sbi, typ4->vd4_block),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249) 			       fs64_to_cpu(sbi, typ4->vd4_size),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250) 			       fs32_to_cpu(sbi, typ4->vd4_dev));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251) 			return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252) 		}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253) 		default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254) 			BUG();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255) 		}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 259) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 260) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 261) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 262)  * vxfs_bmap1 - vxfs-internal bmap operation
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 263)  * @ip:			pointer to the inode we do bmap for
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 264)  * @iblock:		logical block
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 265)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 266)  * Description:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 267)  *   vxfs_bmap1 perfoms a logical to physical block mapping
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 268)  *   for vxfs-internal purposes.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 269)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 270)  * Return Value:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 271)  *   The physical block number on success, else Zero.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 272)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 273) daddr_t
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 274) vxfs_bmap1(struct inode *ip, long iblock)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 275) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 276) 	struct vxfs_inode_info		*vip = VXFS_INO(ip);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 277) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 278) 	if (VXFS_ISEXT4(vip))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 279) 		return vxfs_bmap_ext4(ip, iblock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 280) 	if (VXFS_ISTYPED(vip))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 281) 		return vxfs_bmap_typed(ip, iblock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 282) 	if (VXFS_ISNONE(vip))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 283) 		goto unsupp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 284) 	if (VXFS_ISIMMED(vip))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 285) 		goto unsupp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 286) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 287) 	printk(KERN_WARNING "vxfs: inode %ld has no valid orgtype (%x)\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 288) 			ip->i_ino, vip->vii_orgtype);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 289) 	BUG();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 290) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 291) unsupp:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 292) 	printk(KERN_WARNING "vxfs: inode %ld has an unsupported orgtype (%x)\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 293) 			ip->i_ino, vip->vii_orgtype);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 294) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 295) }