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v5.9
  1/*
  2 * Copyright (c) 2000-2001 Christoph Hellwig.
  3 * Copyright (c) 2016 Krzysztof Blaszkowski
  4 * All rights reserved.
  5 *
  6 * Redistribution and use in source and binary forms, with or without
  7 * modification, are permitted provided that the following conditions
  8 * are met:
  9 * 1. Redistributions of source code must retain the above copyright
 10 *    notice, this list of conditions, and the following disclaimer,
 11 *    without modification.
 12 * 2. The name of the author may not be used to endorse or promote products
 13 *    derived from this software without specific prior written permission.
 14 *
 15 * Alternatively, this software may be distributed under the terms of the
 16 * GNU General Public License ("GPL").
 17 *
 18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
 19 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 21 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR
 22 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 24 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 25 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 26 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 27 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 28 * SUCH DAMAGE.
 29 */
 30
 31/*
 32 * Veritas filesystem driver - fileset header routines.
 33 */
 34#include <linux/fs.h>
 35#include <linux/buffer_head.h>
 36#include <linux/kernel.h>
 37#include <linux/slab.h>
 38#include <linux/string.h>
 39
 40#include "vxfs.h"
 41#include "vxfs_inode.h"
 42#include "vxfs_extern.h"
 43#include "vxfs_fshead.h"
 44
 45
 46#ifdef DIAGNOSTIC
 47static void
 48vxfs_dumpfsh(struct vxfs_fsh *fhp)
 49{
 50	printk("\n\ndumping fileset header:\n");
 51	printk("----------------------------\n");
 52	printk("version: %u\n", fhp->fsh_version);
 53	printk("fsindex: %u\n", fhp->fsh_fsindex);
 54	printk("iauino: %u\tninodes:%u\n",
 55			fhp->fsh_iauino, fhp->fsh_ninodes);
 56	printk("maxinode: %u\tlctino: %u\n",
 57			fhp->fsh_maxinode, fhp->fsh_lctino);
 58	printk("nau: %u\n", fhp->fsh_nau);
 59	printk("ilistino[0]: %u\tilistino[1]: %u\n",
 60			fhp->fsh_ilistino[0], fhp->fsh_ilistino[1]);
 61}
 62#endif
 63
 64/**
 65 * vxfs_getfsh - read fileset header into memory
 66 * @ip:		the (fake) fileset header inode
 67 * @which:	0 for the structural, 1 for the primary fsh.
 68 *
 69 * Description:
 70 *   vxfs_getfsh reads either the structural or primary fileset header
 71 *   described by @ip into memory.
 72 *
 73 * Returns:
 74 *   The fileset header structure on success, else Zero.
 75 */
 76static struct vxfs_fsh *
 77vxfs_getfsh(struct inode *ip, int which)
 78{
 79	struct buffer_head		*bp;
 80
 81	bp = vxfs_bread(ip, which);
 82	if (bp) {
 83		struct vxfs_fsh		*fhp;
 84
 85		if (!(fhp = kmalloc(sizeof(*fhp), GFP_KERNEL)))
 86			goto out;
 87		memcpy(fhp, bp->b_data, sizeof(*fhp));
 88
 89		put_bh(bp);
 90		return (fhp);
 91	}
 92out:
 93	brelse(bp);
 94	return NULL;
 95}
 96
 97/**
 98 * vxfs_read_fshead - read the fileset headers
 99 * @sbp:	superblock to which the fileset belongs
100 *
101 * Description:
102 *   vxfs_read_fshead will fill the inode and structural inode list in @sb.
103 *
104 * Returns:
105 *   Zero on success, else a negative error code (-EINVAL).
106 */
107int
108vxfs_read_fshead(struct super_block *sbp)
109{
110	struct vxfs_sb_info		*infp = VXFS_SBI(sbp);
111	struct vxfs_fsh			*pfp, *sfp;
112	struct vxfs_inode_info		*vip;
113
114	infp->vsi_fship = vxfs_blkiget(sbp, infp->vsi_iext, infp->vsi_fshino);
115	if (!infp->vsi_fship) {
116		printk(KERN_ERR "vxfs: unable to read fsh inode\n");
117		return -EINVAL;
118	}
119
120	vip = VXFS_INO(infp->vsi_fship);
121	if (!VXFS_ISFSH(vip)) {
122		printk(KERN_ERR "vxfs: fsh list inode is of wrong type (%x)\n",
123				vip->vii_mode & VXFS_TYPE_MASK); 
124		goto out_iput_fship;
125	}
126
 
127#ifdef DIAGNOSTIC
128	printk("vxfs: fsh inode dump:\n");
129	vxfs_dumpi(vip, infp->vsi_fshino);
130#endif
131
 
 
 
 
 
 
132	sfp = vxfs_getfsh(infp->vsi_fship, 0);
133	if (!sfp) {
134		printk(KERN_ERR "vxfs: unable to get structural fsh\n");
135		goto out_iput_fship;
136	} 
137
138#ifdef DIAGNOSTIC
139	vxfs_dumpfsh(sfp);
140#endif
141
142	pfp = vxfs_getfsh(infp->vsi_fship, 1);
143	if (!pfp) {
144		printk(KERN_ERR "vxfs: unable to get primary fsh\n");
145		goto out_free_sfp;
146	}
147
148#ifdef DIAGNOSTIC
149	vxfs_dumpfsh(pfp);
150#endif
151
152	infp->vsi_stilist = vxfs_blkiget(sbp, infp->vsi_iext,
153			fs32_to_cpu(infp, sfp->fsh_ilistino[0]));
 
 
 
154	if (!infp->vsi_stilist) {
155		printk(KERN_ERR "vxfs: unable to get structural list inode\n");
 
156		goto out_free_pfp;
157	}
158	if (!VXFS_ISILT(VXFS_INO(infp->vsi_stilist))) {
159		printk(KERN_ERR "vxfs: structural list inode is of wrong type (%x)\n",
160				VXFS_INO(infp->vsi_stilist)->vii_mode & VXFS_TYPE_MASK); 
161		goto out_iput_stilist;
162	}
163
164	infp->vsi_ilist = vxfs_stiget(sbp, fs32_to_cpu(infp, pfp->fsh_ilistino[0]));
 
 
 
165	if (!infp->vsi_ilist) {
166		printk(KERN_ERR "vxfs: unable to get inode list inode\n");
 
167		goto out_iput_stilist;
168	}
169	if (!VXFS_ISILT(VXFS_INO(infp->vsi_ilist))) {
170		printk(KERN_ERR "vxfs: inode list inode is of wrong type (%x)\n",
171				VXFS_INO(infp->vsi_ilist)->vii_mode & VXFS_TYPE_MASK);
172		goto out_iput_ilist;
173	}
174
175	kfree(pfp);
176	kfree(sfp);
177	return 0;
178
179 out_iput_ilist:
180 	iput(infp->vsi_ilist);
181 out_iput_stilist:
182 	iput(infp->vsi_stilist);
183 out_free_pfp:
184	kfree(pfp);
185 out_free_sfp:
186 	kfree(sfp);
187 out_iput_fship:
188	iput(infp->vsi_fship);
 
 
 
189	return -EINVAL;
190}
v3.15
  1/*
  2 * Copyright (c) 2000-2001 Christoph Hellwig.
 
  3 * All rights reserved.
  4 *
  5 * Redistribution and use in source and binary forms, with or without
  6 * modification, are permitted provided that the following conditions
  7 * are met:
  8 * 1. Redistributions of source code must retain the above copyright
  9 *    notice, this list of conditions, and the following disclaimer,
 10 *    without modification.
 11 * 2. The name of the author may not be used to endorse or promote products
 12 *    derived from this software without specific prior written permission.
 13 *
 14 * Alternatively, this software may be distributed under the terms of the
 15 * GNU General Public License ("GPL").
 16 *
 17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
 18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 20 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR
 21 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 27 * SUCH DAMAGE.
 28 */
 29
 30/*
 31 * Veritas filesystem driver - fileset header routines.
 32 */
 33#include <linux/fs.h>
 34#include <linux/buffer_head.h>
 35#include <linux/kernel.h>
 36#include <linux/slab.h>
 37#include <linux/string.h>
 38
 39#include "vxfs.h"
 40#include "vxfs_inode.h"
 41#include "vxfs_extern.h"
 42#include "vxfs_fshead.h"
 43
 44
 45#ifdef DIAGNOSTIC
 46static void
 47vxfs_dumpfsh(struct vxfs_fsh *fhp)
 48{
 49	printk("\n\ndumping fileset header:\n");
 50	printk("----------------------------\n");
 51	printk("version: %u\n", fhp->fsh_version);
 52	printk("fsindex: %u\n", fhp->fsh_fsindex);
 53	printk("iauino: %u\tninodes:%u\n",
 54			fhp->fsh_iauino, fhp->fsh_ninodes);
 55	printk("maxinode: %u\tlctino: %u\n",
 56			fhp->fsh_maxinode, fhp->fsh_lctino);
 57	printk("nau: %u\n", fhp->fsh_nau);
 58	printk("ilistino[0]: %u\tilistino[1]: %u\n",
 59			fhp->fsh_ilistino[0], fhp->fsh_ilistino[1]);
 60}
 61#endif
 62
 63/**
 64 * vxfs_getfsh - read fileset header into memory
 65 * @ip:		the (fake) fileset header inode
 66 * @which:	0 for the structural, 1 for the primary fsh.
 67 *
 68 * Description:
 69 *   vxfs_getfsh reads either the structural or primary fileset header
 70 *   described by @ip into memory.
 71 *
 72 * Returns:
 73 *   The fileset header structure on success, else Zero.
 74 */
 75static struct vxfs_fsh *
 76vxfs_getfsh(struct inode *ip, int which)
 77{
 78	struct buffer_head		*bp;
 79
 80	bp = vxfs_bread(ip, which);
 81	if (bp) {
 82		struct vxfs_fsh		*fhp;
 83
 84		if (!(fhp = kmalloc(sizeof(*fhp), GFP_KERNEL)))
 85			goto out;
 86		memcpy(fhp, bp->b_data, sizeof(*fhp));
 87
 88		put_bh(bp);
 89		return (fhp);
 90	}
 91out:
 92	brelse(bp);
 93	return NULL;
 94}
 95
 96/**
 97 * vxfs_read_fshead - read the fileset headers
 98 * @sbp:	superblock to which the fileset belongs
 99 *
100 * Description:
101 *   vxfs_read_fshead will fill the inode and structural inode list in @sb.
102 *
103 * Returns:
104 *   Zero on success, else a negative error code (-EINVAL).
105 */
106int
107vxfs_read_fshead(struct super_block *sbp)
108{
109	struct vxfs_sb_info		*infp = VXFS_SBI(sbp);
110	struct vxfs_fsh			*pfp, *sfp;
111	struct vxfs_inode_info		*vip, *tip;
112
113	vip = vxfs_blkiget(sbp, infp->vsi_iext, infp->vsi_fshino);
114	if (!vip) {
115		printk(KERN_ERR "vxfs: unable to read fsh inode\n");
116		return -EINVAL;
117	}
 
 
118	if (!VXFS_ISFSH(vip)) {
119		printk(KERN_ERR "vxfs: fsh list inode is of wrong type (%x)\n",
120				vip->vii_mode & VXFS_TYPE_MASK); 
121		goto out_free_fship;
122	}
123
124
125#ifdef DIAGNOSTIC
126	printk("vxfs: fsh inode dump:\n");
127	vxfs_dumpi(vip, infp->vsi_fshino);
128#endif
129
130	infp->vsi_fship = vxfs_get_fake_inode(sbp, vip);
131	if (!infp->vsi_fship) {
132		printk(KERN_ERR "vxfs: unable to get fsh inode\n");
133		goto out_free_fship;
134	}
135
136	sfp = vxfs_getfsh(infp->vsi_fship, 0);
137	if (!sfp) {
138		printk(KERN_ERR "vxfs: unable to get structural fsh\n");
139		goto out_iput_fship;
140	} 
141
142#ifdef DIAGNOSTIC
143	vxfs_dumpfsh(sfp);
144#endif
145
146	pfp = vxfs_getfsh(infp->vsi_fship, 1);
147	if (!pfp) {
148		printk(KERN_ERR "vxfs: unable to get primary fsh\n");
149		goto out_free_sfp;
150	}
151
152#ifdef DIAGNOSTIC
153	vxfs_dumpfsh(pfp);
154#endif
155
156	tip = vxfs_blkiget(sbp, infp->vsi_iext, sfp->fsh_ilistino[0]);
157	if (!tip)
158		goto out_free_pfp;
159
160	infp->vsi_stilist = vxfs_get_fake_inode(sbp, tip);
161	if (!infp->vsi_stilist) {
162		printk(KERN_ERR "vxfs: unable to get structural list inode\n");
163		kfree(tip);
164		goto out_free_pfp;
165	}
166	if (!VXFS_ISILT(VXFS_INO(infp->vsi_stilist))) {
167		printk(KERN_ERR "vxfs: structural list inode is of wrong type (%x)\n",
168				VXFS_INO(infp->vsi_stilist)->vii_mode & VXFS_TYPE_MASK); 
169		goto out_iput_stilist;
170	}
171
172	tip = vxfs_stiget(sbp, pfp->fsh_ilistino[0]);
173	if (!tip)
174		goto out_iput_stilist;
175	infp->vsi_ilist = vxfs_get_fake_inode(sbp, tip);
176	if (!infp->vsi_ilist) {
177		printk(KERN_ERR "vxfs: unable to get inode list inode\n");
178		kfree(tip);
179		goto out_iput_stilist;
180	}
181	if (!VXFS_ISILT(VXFS_INO(infp->vsi_ilist))) {
182		printk(KERN_ERR "vxfs: inode list inode is of wrong type (%x)\n",
183				VXFS_INO(infp->vsi_ilist)->vii_mode & VXFS_TYPE_MASK);
184		goto out_iput_ilist;
185	}
186
 
 
187	return 0;
188
189 out_iput_ilist:
190 	iput(infp->vsi_ilist);
191 out_iput_stilist:
192 	iput(infp->vsi_stilist);
193 out_free_pfp:
194	kfree(pfp);
195 out_free_sfp:
196 	kfree(sfp);
197 out_iput_fship:
198	iput(infp->vsi_fship);
199	return -EINVAL;
200 out_free_fship:
201 	kfree(vip);
202	return -EINVAL;
203}