include/linux/intermezzo_kml.h

   1 #ifndef __INTERMEZZO_KML_H
   2 #define __INTERMEZZO_KML_H
   3
   4 #include <linux/version.h>
   5 #include <linux/intermezzo_psdev.h>
   6 #include <linux/fs.h>
   7 #include <linux/intermezzo_journal.h>
   8
   9 #define PRESTO_KML_MAJOR_VERSION 0x00010000
  10 #define PRESTO_KML_MINOR_VERSION 0x00002001
  11 #define PRESTO_OP_NOOP          0
  12 #define PRESTO_OP_CREATE        1
  13 #define PRESTO_OP_MKDIR         2
  14 #define PRESTO_OP_UNLINK        3
  15 #define PRESTO_OP_RMDIR         4
  16 #define PRESTO_OP_CLOSE         5
  17 #define PRESTO_OP_SYMLINK       6
  18 #define PRESTO_OP_RENAME        7
  19 #define PRESTO_OP_SETATTR       8
  20 #define PRESTO_OP_LINK          9
  21 #define PRESTO_OP_OPEN          10
  22 #define PRESTO_OP_MKNOD         11
  23 #define PRESTO_OP_WRITE         12
  24 #define PRESTO_OP_RELEASE       13
  25 #define PRESTO_OP_TRUNC         14
  26 #define PRESTO_OP_SETEXTATTR    15
  27 #define PRESTO_OP_DELEXTATTR    16
  28
  29 #define PRESTO_LML_DONE         1 /* flag to get first write to do LML */
  30 #define KML_KOP_MARK            0xffff
  31
  32 struct presto_lml_data {
  33         loff_t   rec_offset;
  34 };
  35
  36 struct big_journal_prefix {
  37         u32 len;
  38         u32 version;
  39         u32 pid;
  40         u32 uid;
  41         u32 fsuid;
  42         u32 fsgid;
  43         u32 opcode;
  44         u32 ngroups;
  45         u32 groups[NGROUPS_MAX];
  46 };
  47
  48 enum kml_opcode {
  49         KML_CREATE = 1,
  50         KML_MKDIR,
  51         KML_UNLINK,
  52         KML_RMDIR,
  53         KML_CLOSE,
  54         KML_SYMLINK,
  55         KML_RENAME,
  56         KML_SETATTR,
  57         KML_LINK,
  58         KML_OPEN,
  59         KML_MKNOD,
  60         KML_ENDMARK = 0xff
  61 };
  62
  63 struct kml_create {
  64         char                    *path;
  65         struct presto_version   new_objectv,
  66                                 old_parentv,
  67                                 new_parentv;
  68         int                     mode;
  69         int                     uid;
  70         int                     gid;
  71 };
  72
  73 struct kml_open {
  74 };
  75
  76 struct kml_mkdir {
  77         char                    *path;
  78         struct presto_version   new_objectv,
  79                                 old_parentv,
  80                                 new_parentv;
  81         int                     mode;
  82         int                     uid;
  83         int                     gid;
  84 };
  85
  86 struct kml_unlink {
  87         char                    *path,
  88                                 *name;
  89         struct presto_version   old_tgtv,
  90                                 old_parentv,
  91                                 new_parentv;
  92 };
  93
  94 struct kml_rmdir {
  95         char                    *path,
  96                                 *name;
  97         struct presto_version   old_tgtv,
  98                                 old_parentv,
  99                                 new_parentv;
 100 };
 101
 102 struct kml_close {
 103         int                     open_mode,
 104                                 open_uid,
 105                                 open_gid;
 106         char                    *path;
 107         struct presto_version   new_objectv;
 108         __u64                   ino;
 109         int                     generation;
 110 };
 111
 112 struct kml_symlink {
 113         char                    *sourcepath,
 114                                 *targetpath;
 115         struct presto_version   new_objectv,
 116                                 old_parentv,
 117                                 new_parentv;
 118         int                     uid;
 119         int                     gid;
 120 };
 121
 122 struct kml_rename {
 123         char                    *sourcepath,
 124                                 *targetpath;
 125         struct presto_version   old_objectv,
 126                                 new_objectv,
 127                                 old_tgtv,
 128                                 new_tgtv;
 129 };
 130
 131 struct kml_setattr {
 132         char                    *path;
 133         struct presto_version   old_objectv;
 134         struct iattr            iattr;
 135 };
 136
 137 struct kml_link {
 138         char                    *sourcepath,
 139                                 *targetpath;
 140         struct presto_version   new_objectv,
 141                                 old_parentv,
 142                                 new_parentv;
 143 };
 144
 145 struct kml_mknod {
 146         char                    *path;
 147         struct presto_version   new_objectv,
 148                                 old_parentv,
 149                                 new_parentv;
 150         int                     mode;
 151         int                     uid;
 152         int                     gid;
 153         int                     major;
 154         int                     minor;
 155 };
 156
 157 /* kml record items for optimizing */
 158 struct kml_kop_node
 159 {
 160         u32             kml_recno;
 161         u32             kml_flag;
 162         u32             kml_op;
 163         nlink_t         i_nlink;
 164         u32             i_ino;
 165 };
 166
 167 struct kml_kop_lnode
 168 {
 169         struct list_head chains;
 170         struct kml_kop_node node;
 171 };
 172
 173 struct kml_endmark {
 174         u32                     total;
 175         struct kml_kop_node     *kop;
 176 };
 177
 178 /* kml_flag */
 179 #define  KML_REC_DELETE               1
 180 #define  KML_REC_EXIST                0
 181
 182 struct kml_optimize {
 183         struct list_head kml_chains;
 184         u32              kml_flag;
 185         u32              kml_op;
 186         nlink_t          i_nlink;
 187         u32              i_ino;
 188 };
 189
 190 struct kml_rec {
 191         /* attribute of this record */
 192         int                             rec_size;
 193         int                             rec_kml_offset;
 194
 195         struct  big_journal_prefix      rec_head;
 196         union {
 197                 struct kml_create       create;
 198                 struct kml_open         open;
 199                 struct kml_mkdir        mkdir;
 200                 struct kml_unlink       unlink;
 201                 struct kml_rmdir        rmdir;
 202                 struct kml_close        close;
 203                 struct kml_symlink      symlink;
 204                 struct kml_rename       rename;
 205                 struct kml_setattr      setattr;
 206                 struct kml_mknod        mknod;
 207                 struct kml_link         link;
 208                 struct kml_endmark      endmark;
 209         } rec_kml;
 210         struct  journal_suffix          rec_tail;
 211
 212         /* for kml optimize only */
 213         struct  kml_optimize kml_optimize;
 214 };
 215
 216 /* kml record items for optimizing */
 217 extern void kml_kop_init (struct presto_file_set *fset);
 218 extern void kml_kop_addrec (struct presto_file_set *fset,
 219                 struct inode *ino, u32 op, u32 flag);
 220 extern int  kml_kop_flush (struct presto_file_set *fset);
 221
 222 /* defined in kml_setup.c */
 223 extern int kml_init (struct presto_file_set *fset);
 224 extern int kml_cleanup (struct presto_file_set *fset);
 225
 226 /* defined in kml.c */
 227 extern int begin_kml_reint (struct file *file, unsigned long arg);
 228 extern int do_kml_reint (struct file *file, unsigned long arg);
 229 extern int end_kml_reint (struct file *file, unsigned long arg);
 230
 231 /* kml_utils.c */
 232 extern char *dlogit (void *tbuf, const void *sbuf, int size);
 233 extern char * bdup_printf (char *format, ...);
 234
 235 /* defined in kml_decode.c */
 236 /* printop */
 237 #define  PRINT_KML_PREFIX             0x1
 238 #define  PRINT_KML_SUFFIX             0x2
 239 #define  PRINT_KML_REC                0x4
 240 #define  PRINT_KML_OPTIMIZE           0x8
 241 #define  PRINT_KML_EXIST              0x10
 242 #define  PRINT_KML_DELETE             0x20
 243 extern void   kml_printrec (struct kml_rec *rec, int printop);
 244 extern int    print_allkmlrec (struct list_head *head, int printop);
 245 extern int    delete_kmlrec (struct list_head *head);
 246 extern int    kml_decoderec (char *buf, int pos, int buflen, int *size,
 247                              struct kml_rec **newrec);
 248 extern int decode_kmlrec (struct list_head *head, char *kml_buf, int buflen);
 249 extern void kml_freerec (struct kml_rec *rec);
 250
 251 /* defined in kml_reint.c */
 252 #define KML_CLOSE_BACKFETCH            1
 253 extern int kml_reintbuf (struct  kml_fsdata *kml_fsdata,
 254                         char *mtpt, struct kml_rec **rec);
 255
 256 /* defined in kml_setup.c */
 257 extern int kml_init (struct presto_file_set *fset);
 258 extern int kml_cleanup (struct presto_file_set *fset);
 259
 260 #endif
 261