fs/gfs2/ondisk.c

   1 /*
   2  * Copyright (C) Sistina Software, Inc.  1997-2003 All rights reserved.
   3  * Copyright (C) 2004-2006 Red Hat, Inc.  All rights reserved.
   4  *
   5  * This copyrighted material is made available to anyone wishing to use,
   6  * modify, copy, or redistribute it subject to the terms and conditions
   7  * of the GNU General Public License version 2.
   8  */
   9
  10 #include <linux/sched.h>
  11 #include <linux/slab.h>
  12 #include <linux/spinlock.h>
  13 #include <linux/completion.h>
  14 #include <linux/buffer_head.h>
  15
  16 #include "gfs2.h"
  17 #include <linux/gfs2_ondisk.h>
  18 #include <linux/lm_interface.h>
  19 #include "incore.h"
  20
  21 #define pv(struct, member, fmt) printk(KERN_INFO "  "#member" = "fmt"\n", \
  22                                        struct->member);
  23
  24 /*
  25  * gfs2_xxx_in - read in an xxx struct
  26  * first arg: the cpu-order structure
  27  * buf: the disk-order buffer
  28  *
  29  * gfs2_xxx_out - write out an xxx struct
  30  * first arg: the cpu-order structure
  31  * buf: the disk-order buffer
  32  *
  33  * gfs2_xxx_print - print out an xxx struct
  34  * first arg: the cpu-order structure
  35  */
  36
  37 void gfs2_inum_in(struct gfs2_inum_host *no, const void *buf)
  38 {
  39         const struct gfs2_inum *str = buf;
  40
  41         no->no_formal_ino = be64_to_cpu(str->no_formal_ino);
  42         no->no_addr = be64_to_cpu(str->no_addr);
  43 }
  44
  45 void gfs2_inum_out(const struct gfs2_inum_host *no, void *buf)
  46 {
  47         struct gfs2_inum *str = buf;
  48
  49         str->no_formal_ino = cpu_to_be64(no->no_formal_ino);
  50         str->no_addr = cpu_to_be64(no->no_addr);
  51 }
  52
  53 static void gfs2_inum_print(const struct gfs2_inum_host *no)
  54 {
  55         printk(KERN_INFO "  no_formal_ino = %llu\n", (unsigned long long)no->no_formal_ino);
  56         printk(KERN_INFO "  no_addr = %llu\n", (unsigned long long)no->no_addr);
  57 }
  58
  59 static void gfs2_meta_header_in(struct gfs2_meta_header_host *mh, const void *buf)
  60 {
  61         const struct gfs2_meta_header *str = buf;
  62
  63         mh->mh_magic = be32_to_cpu(str->mh_magic);
  64         mh->mh_type = be32_to_cpu(str->mh_type);
  65         mh->mh_format = be32_to_cpu(str->mh_format);
  66 }
  67
  68 void gfs2_sb_in(struct gfs2_sb_host *sb, const void *buf)
  69 {
  70         const struct gfs2_sb *str = buf;
  71
  72         gfs2_meta_header_in(&sb->sb_header, buf);
  73
  74         sb->sb_fs_format = be32_to_cpu(str->sb_fs_format);
  75         sb->sb_multihost_format = be32_to_cpu(str->sb_multihost_format);
  76         sb->sb_bsize = be32_to_cpu(str->sb_bsize);
  77         sb->sb_bsize_shift = be32_to_cpu(str->sb_bsize_shift);
  78
  79         gfs2_inum_in(&sb->sb_master_dir, (char *)&str->sb_master_dir);
  80         gfs2_inum_in(&sb->sb_root_dir, (char *)&str->sb_root_dir);
  81
  82         memcpy(sb->sb_lockproto, str->sb_lockproto, GFS2_LOCKNAME_LEN);
  83         memcpy(sb->sb_locktable, str->sb_locktable, GFS2_LOCKNAME_LEN);
  84 }
  85
  86 void gfs2_rindex_in(struct gfs2_rindex_host *ri, const void *buf)
  87 {
  88         const struct gfs2_rindex *str = buf;
  89
  90         ri->ri_addr = be64_to_cpu(str->ri_addr);
  91         ri->ri_length = be32_to_cpu(str->ri_length);
  92         ri->ri_data0 = be64_to_cpu(str->ri_data0);
  93         ri->ri_data = be32_to_cpu(str->ri_data);
  94         ri->ri_bitbytes = be32_to_cpu(str->ri_bitbytes);
  95
  96 }
  97
  98 void gfs2_rindex_print(const struct gfs2_rindex_host *ri)
  99 {
 100         printk(KERN_INFO "  ri_addr = %llu\n", (unsigned long long)ri->ri_addr);
 101         pv(ri, ri_length, "%u");
 102
 103         printk(KERN_INFO "  ri_data0 = %llu\n", (unsigned long long)ri->ri_data0);
 104         pv(ri, ri_data, "%u");
 105
 106         pv(ri, ri_bitbytes, "%u");
 107 }
 108
 109 void gfs2_rgrp_in(struct gfs2_rgrp_host *rg, const void *buf)
 110 {
 111         const struct gfs2_rgrp *str = buf;
 112
 113         rg->rg_flags = be32_to_cpu(str->rg_flags);
 114         rg->rg_free = be32_to_cpu(str->rg_free);
 115         rg->rg_dinodes = be32_to_cpu(str->rg_dinodes);
 116         rg->rg_igeneration = be64_to_cpu(str->rg_igeneration);
 117 }
 118
 119 void gfs2_rgrp_out(const struct gfs2_rgrp_host *rg, void *buf)
 120 {
 121         struct gfs2_rgrp *str = buf;
 122
 123         str->rg_flags = cpu_to_be32(rg->rg_flags);
 124         str->rg_free = cpu_to_be32(rg->rg_free);
 125         str->rg_dinodes = cpu_to_be32(rg->rg_dinodes);
 126         str->__pad = cpu_to_be32(0);
 127         str->rg_igeneration = cpu_to_be64(rg->rg_igeneration);
 128         memset(&str->rg_reserved, 0, sizeof(str->rg_reserved));
 129 }
 130
 131 void gfs2_quota_in(struct gfs2_quota_host *qu, const void *buf)
 132 {
 133         const struct gfs2_quota *str = buf;
 134
 135         qu->qu_limit = be64_to_cpu(str->qu_limit);
 136         qu->qu_warn = be64_to_cpu(str->qu_warn);
 137         qu->qu_value = be64_to_cpu(str->qu_value);
 138 }
 139
 140 void gfs2_dinode_out(const struct gfs2_inode *ip, void *buf)
 141 {
 142         const struct gfs2_dinode_host *di = &ip->i_di;
 143         struct gfs2_dinode *str = buf;
 144
 145         str->di_header.mh_magic = cpu_to_be32(GFS2_MAGIC);
 146         str->di_header.mh_type = cpu_to_be32(GFS2_METATYPE_DI);
 147         str->di_header.__pad0 = 0;
 148         str->di_header.mh_format = cpu_to_be32(GFS2_FORMAT_DI);
 149         str->di_header.__pad1 = 0;
 150
 151         gfs2_inum_out(&ip->i_num, &str->di_num);
 152
 153         str->di_mode = cpu_to_be32(ip->i_inode.i_mode);
 154         str->di_uid = cpu_to_be32(ip->i_inode.i_uid);
 155         str->di_gid = cpu_to_be32(ip->i_inode.i_gid);
 156         str->di_nlink = cpu_to_be32(ip->i_inode.i_nlink);
 157         str->di_size = cpu_to_be64(di->di_size);
 158         str->di_blocks = cpu_to_be64(di->di_blocks);
 159         str->di_atime = cpu_to_be64(ip->i_inode.i_atime.tv_sec);
 160         str->di_mtime = cpu_to_be64(ip->i_inode.i_mtime.tv_sec);
 161         str->di_ctime = cpu_to_be64(ip->i_inode.i_ctime.tv_sec);
 162
 163         str->di_goal_meta = cpu_to_be64(di->di_goal_meta);
 164         str->di_goal_data = cpu_to_be64(di->di_goal_data);
 165         str->di_generation = cpu_to_be64(di->di_generation);
 166
 167         str->di_flags = cpu_to_be32(di->di_flags);
 168         str->di_height = cpu_to_be16(di->di_height);
 169         str->di_payload_format = cpu_to_be32(S_ISDIR(ip->i_inode.i_mode) &&
 170                                              !(ip->i_di.di_flags & GFS2_DIF_EXHASH) ?
 171                                              GFS2_FORMAT_DE : 0);
 172         str->di_depth = cpu_to_be16(di->di_depth);
 173         str->di_entries = cpu_to_be32(di->di_entries);
 174
 175         str->di_eattr = cpu_to_be64(di->di_eattr);
 176 }
 177
 178 void gfs2_dinode_print(const struct gfs2_inode *ip)
 179 {
 180         const struct gfs2_dinode_host *di = &ip->i_di;
 181
 182         gfs2_inum_print(&ip->i_num);
 183
 184         printk(KERN_INFO "  di_size = %llu\n", (unsigned long long)di->di_size);
 185         printk(KERN_INFO "  di_blocks = %llu\n", (unsigned long long)di->di_blocks);
 186         printk(KERN_INFO "  di_goal_meta = %llu\n", (unsigned long long)di->di_goal_meta);
 187         printk(KERN_INFO "  di_goal_data = %llu\n", (unsigned long long)di->di_goal_data);
 188
 189         pv(di, di_flags, "0x%.8X");
 190         pv(di, di_height, "%u");
 191
 192         pv(di, di_depth, "%u");
 193         pv(di, di_entries, "%u");
 194
 195         printk(KERN_INFO "  di_eattr = %llu\n", (unsigned long long)di->di_eattr);
 196 }
 197
 198 void gfs2_log_header_in(struct gfs2_log_header_host *lh, const void *buf)
 199 {
 200         const struct gfs2_log_header *str = buf;
 201
 202         gfs2_meta_header_in(&lh->lh_header, buf);
 203         lh->lh_sequence = be64_to_cpu(str->lh_sequence);
 204         lh->lh_flags = be32_to_cpu(str->lh_flags);
 205         lh->lh_tail = be32_to_cpu(str->lh_tail);
 206         lh->lh_blkno = be32_to_cpu(str->lh_blkno);
 207         lh->lh_hash = be32_to_cpu(str->lh_hash);
 208 }
 209
 210 void gfs2_inum_range_in(struct gfs2_inum_range_host *ir, const void *buf)
 211 {
 212         const struct gfs2_inum_range *str = buf;
 213
 214         ir->ir_start = be64_to_cpu(str->ir_start);
 215         ir->ir_length = be64_to_cpu(str->ir_length);
 216 }
 217
 218 void gfs2_inum_range_out(const struct gfs2_inum_range_host *ir, void *buf)
 219 {
 220         struct gfs2_inum_range *str = buf;
 221
 222         str->ir_start = cpu_to_be64(ir->ir_start);
 223         str->ir_length = cpu_to_be64(ir->ir_length);
 224 }
 225
 226 void gfs2_statfs_change_in(struct gfs2_statfs_change_host *sc, const void *buf)
 227 {
 228         const struct gfs2_statfs_change *str = buf;
 229
 230         sc->sc_total = be64_to_cpu(str->sc_total);
 231         sc->sc_free = be64_to_cpu(str->sc_free);
 232         sc->sc_dinodes = be64_to_cpu(str->sc_dinodes);
 233 }
 234
 235 void gfs2_statfs_change_out(const struct gfs2_statfs_change_host *sc, void *buf)
 236 {
 237         struct gfs2_statfs_change *str = buf;
 238
 239         str->sc_total = cpu_to_be64(sc->sc_total);
 240         str->sc_free = cpu_to_be64(sc->sc_free);
 241         str->sc_dinodes = cpu_to_be64(sc->sc_dinodes);
 242 }
 243
 244 void gfs2_quota_change_in(struct gfs2_quota_change_host *qc, const void *buf)
 245 {
 246         const struct gfs2_quota_change *str = buf;
 247
 248         qc->qc_change = be64_to_cpu(str->qc_change);
 249         qc->qc_flags = be32_to_cpu(str->qc_flags);
 250         qc->qc_id = be32_to_cpu(str->qc_id);
 251 }
 252