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_out(const struct gfs2_inode *ip, struct gfs2_dirent *dent)
  37 {
  38         dent->de_inum.no_formal_ino = cpu_to_be64(ip->i_no_formal_ino);
  39         dent->de_inum.no_addr = cpu_to_be64(ip->i_no_addr);
  40 }
  41
  42 static void gfs2_meta_header_in(struct gfs2_meta_header_host *mh, const void *buf)
  43 {
  44         const struct gfs2_meta_header *str = buf;
  45
  46         mh->mh_magic = be32_to_cpu(str->mh_magic);
  47         mh->mh_type = be32_to_cpu(str->mh_type);
  48         mh->mh_format = be32_to_cpu(str->mh_format);
  49 }
  50
  51 void gfs2_sb_in(struct gfs2_sb_host *sb, const void *buf)
  52 {
  53         const struct gfs2_sb *str = buf;
  54
  55         gfs2_meta_header_in(&sb->sb_header, buf);
  56
  57         sb->sb_fs_format = be32_to_cpu(str->sb_fs_format);
  58         sb->sb_multihost_format = be32_to_cpu(str->sb_multihost_format);
  59         sb->sb_bsize = be32_to_cpu(str->sb_bsize);
  60         sb->sb_bsize_shift = be32_to_cpu(str->sb_bsize_shift);
  61         sb->sb_master_dir.no_addr = be64_to_cpu(str->sb_master_dir.no_addr);
  62         sb->sb_master_dir.no_formal_ino = be64_to_cpu(str->sb_master_dir.no_formal_ino);
  63         sb->sb_root_dir.no_addr = be64_to_cpu(str->sb_root_dir.no_addr);
  64         sb->sb_root_dir.no_formal_ino = be64_to_cpu(str->sb_root_dir.no_formal_ino);
  65
  66         memcpy(sb->sb_lockproto, str->sb_lockproto, GFS2_LOCKNAME_LEN);
  67         memcpy(sb->sb_locktable, str->sb_locktable, GFS2_LOCKNAME_LEN);
  68 }
  69
  70 void gfs2_rindex_in(struct gfs2_rindex_host *ri, const void *buf)
  71 {
  72         const struct gfs2_rindex *str = buf;
  73
  74         ri->ri_addr = be64_to_cpu(str->ri_addr);
  75         ri->ri_length = be32_to_cpu(str->ri_length);
  76         ri->ri_data0 = be64_to_cpu(str->ri_data0);
  77         ri->ri_data = be32_to_cpu(str->ri_data);
  78         ri->ri_bitbytes = be32_to_cpu(str->ri_bitbytes);
  79
  80 }
  81
  82 void gfs2_rindex_print(const struct gfs2_rindex_host *ri)
  83 {
  84         printk(KERN_INFO "  ri_addr = %llu\n", (unsigned long long)ri->ri_addr);
  85         pv(ri, ri_length, "%u");
  86
  87         printk(KERN_INFO "  ri_data0 = %llu\n", (unsigned long long)ri->ri_data0);
  88         pv(ri, ri_data, "%u");
  89
  90         pv(ri, ri_bitbytes, "%u");
  91 }
  92
  93 void gfs2_rgrp_in(struct gfs2_rgrp_host *rg, const void *buf)
  94 {
  95         const struct gfs2_rgrp *str = buf;
  96
  97         rg->rg_flags = be32_to_cpu(str->rg_flags);
  98         rg->rg_free = be32_to_cpu(str->rg_free);
  99         rg->rg_dinodes = be32_to_cpu(str->rg_dinodes);
 100         rg->rg_igeneration = be64_to_cpu(str->rg_igeneration);
 101 }
 102
 103 void gfs2_rgrp_out(const struct gfs2_rgrp_host *rg, void *buf)
 104 {
 105         struct gfs2_rgrp *str = buf;
 106
 107         str->rg_flags = cpu_to_be32(rg->rg_flags);
 108         str->rg_free = cpu_to_be32(rg->rg_free);
 109         str->rg_dinodes = cpu_to_be32(rg->rg_dinodes);
 110         str->__pad = cpu_to_be32(0);
 111         str->rg_igeneration = cpu_to_be64(rg->rg_igeneration);
 112         memset(&str->rg_reserved, 0, sizeof(str->rg_reserved));
 113 }
 114
 115 void gfs2_quota_in(struct gfs2_quota_host *qu, const void *buf)
 116 {
 117         const struct gfs2_quota *str = buf;
 118
 119         qu->qu_limit = be64_to_cpu(str->qu_limit);
 120         qu->qu_warn = be64_to_cpu(str->qu_warn);
 121         qu->qu_value = be64_to_cpu(str->qu_value);
 122 }
 123
 124 void gfs2_dinode_out(const struct gfs2_inode *ip, void *buf)
 125 {
 126         const struct gfs2_dinode_host *di = &ip->i_di;
 127         struct gfs2_dinode *str = buf;
 128
 129         str->di_header.mh_magic = cpu_to_be32(GFS2_MAGIC);
 130         str->di_header.mh_type = cpu_to_be32(GFS2_METATYPE_DI);
 131         str->di_header.__pad0 = 0;
 132         str->di_header.mh_format = cpu_to_be32(GFS2_FORMAT_DI);
 133         str->di_header.__pad1 = 0;
 134         str->di_num.no_addr = cpu_to_be64(ip->i_no_addr);
 135         str->di_num.no_formal_ino = cpu_to_be64(ip->i_no_formal_ino);
 136         str->di_mode = cpu_to_be32(ip->i_inode.i_mode);
 137         str->di_uid = cpu_to_be32(ip->i_inode.i_uid);
 138         str->di_gid = cpu_to_be32(ip->i_inode.i_gid);
 139         str->di_nlink = cpu_to_be32(ip->i_inode.i_nlink);
 140         str->di_size = cpu_to_be64(di->di_size);
 141         str->di_blocks = cpu_to_be64(di->di_blocks);
 142         str->di_atime = cpu_to_be64(ip->i_inode.i_atime.tv_sec);
 143         str->di_mtime = cpu_to_be64(ip->i_inode.i_mtime.tv_sec);
 144         str->di_ctime = cpu_to_be64(ip->i_inode.i_ctime.tv_sec);
 145
 146         str->di_goal_meta = cpu_to_be64(di->di_goal_meta);
 147         str->di_goal_data = cpu_to_be64(di->di_goal_data);
 148         str->di_generation = cpu_to_be64(di->di_generation);
 149
 150         str->di_flags = cpu_to_be32(di->di_flags);
 151         str->di_height = cpu_to_be16(di->di_height);
 152         str->di_payload_format = cpu_to_be32(S_ISDIR(ip->i_inode.i_mode) &&
 153                                              !(ip->i_di.di_flags & GFS2_DIF_EXHASH) ?
 154                                              GFS2_FORMAT_DE : 0);
 155         str->di_depth = cpu_to_be16(di->di_depth);
 156         str->di_entries = cpu_to_be32(di->di_entries);
 157
 158         str->di_eattr = cpu_to_be64(di->di_eattr);
 159 }
 160
 161 void gfs2_dinode_print(const struct gfs2_inode *ip)
 162 {
 163         const struct gfs2_dinode_host *di = &ip->i_di;
 164
 165         printk(KERN_INFO "  no_formal_ino = %llu\n", (unsigned long long)ip->i_no_formal_ino);
 166         printk(KERN_INFO "  no_addr = %llu\n", (unsigned long long)ip->i_no_addr);
 167
 168         printk(KERN_INFO "  di_size = %llu\n", (unsigned long long)di->di_size);
 169         printk(KERN_INFO "  di_blocks = %llu\n", (unsigned long long)di->di_blocks);
 170         printk(KERN_INFO "  di_goal_meta = %llu\n", (unsigned long long)di->di_goal_meta);
 171         printk(KERN_INFO "  di_goal_data = %llu\n", (unsigned long long)di->di_goal_data);
 172
 173         pv(di, di_flags, "0x%.8X");
 174         pv(di, di_height, "%u");
 175
 176         pv(di, di_depth, "%u");
 177         pv(di, di_entries, "%u");
 178
 179         printk(KERN_INFO "  di_eattr = %llu\n", (unsigned long long)di->di_eattr);
 180 }
 181
 182 void gfs2_log_header_in(struct gfs2_log_header_host *lh, const void *buf)
 183 {
 184         const struct gfs2_log_header *str = buf;
 185
 186         gfs2_meta_header_in(&lh->lh_header, buf);
 187         lh->lh_sequence = be64_to_cpu(str->lh_sequence);
 188         lh->lh_flags = be32_to_cpu(str->lh_flags);
 189         lh->lh_tail = be32_to_cpu(str->lh_tail);
 190         lh->lh_blkno = be32_to_cpu(str->lh_blkno);
 191         lh->lh_hash = be32_to_cpu(str->lh_hash);
 192 }
 193
 194 void gfs2_inum_range_in(struct gfs2_inum_range_host *ir, const void *buf)
 195 {
 196         const struct gfs2_inum_range *str = buf;
 197
 198         ir->ir_start = be64_to_cpu(str->ir_start);
 199         ir->ir_length = be64_to_cpu(str->ir_length);
 200 }
 201
 202 void gfs2_inum_range_out(const struct gfs2_inum_range_host *ir, void *buf)
 203 {
 204         struct gfs2_inum_range *str = buf;
 205
 206         str->ir_start = cpu_to_be64(ir->ir_start);
 207         str->ir_length = cpu_to_be64(ir->ir_length);
 208 }
 209
 210 void gfs2_statfs_change_in(struct gfs2_statfs_change_host *sc, const void *buf)
 211 {
 212         const struct gfs2_statfs_change *str = buf;
 213
 214         sc->sc_total = be64_to_cpu(str->sc_total);
 215         sc->sc_free = be64_to_cpu(str->sc_free);
 216         sc->sc_dinodes = be64_to_cpu(str->sc_dinodes);
 217 }
 218
 219 void gfs2_statfs_change_out(const struct gfs2_statfs_change_host *sc, void *buf)
 220 {
 221         struct gfs2_statfs_change *str = buf;
 222
 223         str->sc_total = cpu_to_be64(sc->sc_total);
 224         str->sc_free = cpu_to_be64(sc->sc_free);
 225         str->sc_dinodes = cpu_to_be64(sc->sc_dinodes);
 226 }
 227
 228 void gfs2_quota_change_in(struct gfs2_quota_change_host *qc, const void *buf)
 229 {
 230         const struct gfs2_quota_change *str = buf;
 231
 232         qc->qc_change = be64_to_cpu(str->qc_change);
 233         qc->qc_flags = be32_to_cpu(str->qc_flags);
 234         qc->qc_id = be32_to_cpu(str->qc_id);
 235 }
 236