fs/intermezzo/intermezzo_kml.h

   1 #ifndef __INTERMEZZO_KML_H
   2 #define __INTERMEZZO_KML_H
   3
   4 #include "intermezzo_psdev.h"
   5 #include <linux/fs.h>
   6 #include "intermezzo_journal.h"
   7
   8 #define PRESTO_KML_MAJOR_VERSION 0x00010000
   9 #define PRESTO_KML_MINOR_VERSION 0x00002001
  10 #define PRESTO_OP_NOOP          0
  11 #define PRESTO_OP_CREATE        1
  12 #define PRESTO_OP_MKDIR         2
  13 #define PRESTO_OP_UNLINK        3
  14 #define PRESTO_OP_RMDIR         4
  15 #define PRESTO_OP_CLOSE         5
  16 #define PRESTO_OP_SYMLINK       6
  17 #define PRESTO_OP_RENAME        7
  18 #define PRESTO_OP_SETATTR       8
  19 #define PRESTO_OP_LINK          9
  20 #define PRESTO_OP_OPEN          10
  21 #define PRESTO_OP_MKNOD         11
  22 #define PRESTO_OP_WRITE         12
  23 #define PRESTO_OP_RELEASE       13
  24 #define PRESTO_OP_TRUNC         14
  25 #define PRESTO_OP_SETEXTATTR    15
  26 #define PRESTO_OP_DELEXTATTR    16
  27
  28 #define PRESTO_LML_DONE         1 /* flag to get first write to do LML */
  29 #define KML_KOP_MARK            0xffff
  30
  31 struct presto_lml_data {
  32         loff_t   rec_offset;
  33 };
  34
  35 struct big_journal_prefix {
  36         u32 len;
  37         u32 version;
  38         u32 pid;
  39         u32 uid;
  40         u32 fsuid;
  41         u32 fsgid;
  42         u32 opcode;
  43         u32 ngroups;
  44         u32 groups[NGROUPS_SMALL];
  45 };
  46
  47 enum kml_opcode {
  48         KML_CREATE = 1,
  49         KML_MKDIR,
  50         KML_UNLINK,
  51         KML_RMDIR,
  52         KML_CLOSE,
  53         KML_SYMLINK,
  54         KML_RENAME,
  55         KML_SETATTR,
  56         KML_LINK,
  57         KML_OPEN,
  58         KML_MKNOD,
  59         KML_ENDMARK = 0xff
  60 };
  61
  62 struct kml_create {
  63         char                    *path;
  64         struct presto_version   new_objectv,
  65                                 old_parentv,
  66                                 new_parentv;
  67         int                     mode;
  68         int                     uid;
  69         int                     gid;
  70 };
  71
  72 struct kml_open {
  73 };
  74
  75 struct kml_mkdir {
  76         char                    *path;
  77         struct presto_version   new_objectv,
  78                                 old_parentv,
  79                                 new_parentv;
  80         int                     mode;
  81         int                     uid;
  82         int                     gid;
  83 };
  84
  85 struct kml_unlink {
  86         char                    *path,
  87                                 *name;
  88         struct presto_version   old_tgtv,
  89                                 old_parentv,
  90                                 new_parentv;
  91 };
  92
  93 struct kml_rmdir {
  94         char                    *path,
  95                                 *name;
  96         struct presto_version   old_tgtv,
  97                                 old_parentv,
  98                                 new_parentv;
  99 };
 100
 101 struct kml_close {
 102         int                     open_mode,
 103                                 open_uid,
 104                                 open_gid;
 105         char                    *path;
 106         struct presto_version   new_objectv;
 107         __u64                   ino;
 108         int                     generation;
 109 };
 110
 111 struct kml_symlink {
 112         char                    *sourcepath,
 113                                 *targetpath;
 114         struct presto_version   new_objectv,
 115                                 old_parentv,
 116                                 new_parentv;
 117         int                     uid;
 118         int                     gid;
 119 };
 120
 121 struct kml_rename {
 122         char                    *sourcepath,
 123                                 *targetpath;
 124         struct presto_version   old_objectv,
 125                                 new_objectv,
 126                                 old_tgtv,
 127                                 new_tgtv;
 128 };
 129
 130 struct kml_setattr {
 131         char                    *path;
 132         struct presto_version   old_objectv;
 133         struct iattr            iattr;
 134 };
 135
 136 struct kml_link {
 137         char                    *sourcepath,
 138                                 *targetpath;
 139         struct presto_version   new_objectv,
 140                                 old_parentv,
 141                                 new_parentv;
 142 };
 143
 144 struct kml_mknod {
 145         char                    *path;
 146         struct presto_version   new_objectv,
 147                                 old_parentv,
 148                                 new_parentv;
 149         int                     mode;
 150         int                     uid;
 151         int                     gid;
 152         int                     major;
 153         int                     minor;
 154 };
 155
 156 /* kml record items for optimizing */
 157 struct kml_kop_node
 158 {
 159         u32             kml_recno;
 160         u32             kml_flag;
 161         u32             kml_op;
 162         nlink_t         i_nlink;
 163         u32             i_ino;
 164 };
 165
 166 struct kml_kop_lnode
 167 {
 168         struct list_head chains;
 169         struct kml_kop_node node;
 170 };
 171
 172 struct kml_endmark {
 173         u32                     total;
 174         struct kml_kop_node     *kop;
 175 };
 176
 177 /* kml_flag */
 178 #define  KML_REC_DELETE               1
 179 #define  KML_REC_EXIST                0
 180
 181 struct kml_optimize {
 182         struct list_head kml_chains;
 183         u32              kml_flag;
 184         u32              kml_op;
 185         nlink_t          i_nlink;
 186         u32              i_ino;
 187 };
 188
 189 struct kml_rec {
 190         /* attribute of this record */
 191         int                             rec_size;
 192         int                             rec_kml_offset;
 193
 194         struct  big_journal_prefix      rec_head;
 195         union {
 196                 struct kml_create       create;
 197                 struct kml_open         open;
 198                 struct kml_mkdir        mkdir;
 199                 struct kml_unlink       unlink;
 200                 struct kml_rmdir        rmdir;
 201                 struct kml_close        close;
 202                 struct kml_symlink      symlink;
 203                 struct kml_rename       rename;
 204                 struct kml_setattr      setattr;
 205                 struct kml_mknod        mknod;
 206                 struct kml_link         link;
 207                 struct kml_endmark      endmark;
 208         } rec_kml;
 209         struct  journal_suffix          rec_tail;
 210
 211         /* for kml optimize only */
 212         struct  kml_optimize kml_optimize;
 213 };
 214
 215 /* kml record items for optimizing */
 216 extern void kml_kop_init (struct presto_file_set *fset);
 217 extern void kml_kop_addrec (struct presto_file_set *fset,
 218                 struct inode *ino, u32 op, u32 flag);
 219 extern int  kml_kop_flush (struct presto_file_set *fset);
 220
 221 /* defined in kml_setup.c */
 222 extern int kml_init (struct presto_file_set *fset);
 223 extern int kml_cleanup (struct presto_file_set *fset);
 224
 225 /* defined in kml.c */
 226 extern int begin_kml_reint (struct file *file, unsigned long arg);
 227 extern int do_kml_reint (struct file *file, unsigned long arg);
 228 extern int end_kml_reint (struct file *file, unsigned long arg);
 229
 230 /* kml_utils.c */
 231 extern char *dlogit (void *tbuf, const void *sbuf, int size);
 232 extern char * bdup_printf (char *format, ...);
 233
 234 /* defined in kml_decode.c */
 235 /* printop */
 236 #define  PRINT_KML_PREFIX             0x1
 237 #define  PRINT_KML_SUFFIX             0x2
 238 #define  PRINT_KML_REC                0x4
 239 #define  PRINT_KML_OPTIMIZE           0x8
 240 #define  PRINT_KML_EXIST              0x10
 241 #define  PRINT_KML_DELETE             0x20
 242 extern void   kml_printrec (struct kml_rec *rec, int printop);
 243 extern int    print_allkmlrec (struct list_head *head, int printop);
 244 extern int    delete_kmlrec (struct list_head *head);
 245 extern int    kml_decoderec (char *buf, int pos, int buflen, int *size,
 246                              struct kml_rec **newrec);
 247 extern int decode_kmlrec (struct list_head *head, char *kml_buf, int buflen);
 248 extern void kml_freerec (struct kml_rec *rec);
 249
 250 /* defined in kml_reint.c */
 251 #define KML_CLOSE_BACKFETCH            1
 252 extern int kml_reintbuf (struct  kml_fsdata *kml_fsdata,
 253                         char *mtpt, struct kml_rec **rec);
 254
 255 /* defined in kml_setup.c */
 256 extern int kml_init (struct presto_file_set *fset);
 257 extern int kml_cleanup (struct presto_file_set *fset);
 258
 259 #endif
 260