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