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- typedef struct VacFs VacFs;
- typedef struct VacDir VacDir;
- typedef struct VacFile VacFile;
- typedef struct VacDirEnum VacDirEnum;
- #pragma incomplete VacFile
- #pragma incomplete VacDirEnum
- /*
- * Mode bits
- */
- enum
- {
- ModeOtherExec = (1<<0),
- ModeOtherWrite = (1<<1),
- ModeOtherRead = (1<<2),
- ModeGroupExec = (1<<3),
- ModeGroupWrite = (1<<4),
- ModeGroupRead = (1<<5),
- ModeOwnerExec = (1<<6),
- ModeOwnerWrite = (1<<7),
- ModeOwnerRead = (1<<8),
- ModeSticky = (1<<9),
- ModeSetUid = (1<<10),
- ModeSetGid = (1<<11),
- ModeAppend = (1<<12), /* append only file */
- ModeExclusive = (1<<13), /* lock file - plan 9 */
- ModeLink = (1<<14), /* sym link */
- ModeDir = (1<<15), /* duplicate of DirEntry */
- ModeHidden = (1<<16), /* MS-DOS */
- ModeSystem = (1<<17), /* MS-DOS */
- ModeArchive = (1<<18), /* MS-DOS */
- ModeTemporary = (1<<19), /* MS-DOS */
- ModeSnapshot = (1<<20), /* read only snapshot */
- ModeDevice = (1<<21), /* Unix device */
- ModeNamedPipe = (1<<22) /* Unix named pipe */
- };
- enum
- {
- MetaMagic = 0x5656fc79,
- MetaHeaderSize = 12,
- MetaIndexSize = 4,
- IndexEntrySize = 8,
- DirMagic = 0x1c4d9072
- };
- enum
- {
- DirPlan9Entry = 1, /* not valid in version >= 9 */
- DirNTEntry, /* not valid in version >= 9 */
- DirQidSpaceEntry,
- DirGenEntry /* not valid in version >= 9 */
- };
- struct VacDir
- {
- char *elem; /* path element */
- ulong entry; /* entry in directory for data */
- ulong gen; /* generation of data entry */
- ulong mentry; /* entry in directory for meta */
- ulong mgen; /* generation of meta entry */
- uvlong size; /* size of file */
- uvlong qid; /* unique file id */
-
- char *uid; /* owner id */
- char *gid; /* group id */
- char *mid; /* last modified by */
- ulong mtime; /* last modified time */
- ulong mcount; /* number of modifications: can wrap! */
- ulong ctime; /* directory entry last changed */
- ulong atime; /* last time accessed */
- ulong mode; /* various mode bits */
- /* plan 9 */
- int plan9;
- uvlong p9path;
- ulong p9version;
- /* sub space of qid */
- int qidspace;
- uvlong qidoffset; /* qid offset */
- uvlong qidmax; /* qid maximum */
- };
- struct VacFs
- {
- char name[128];
- uchar score[VtScoreSize];
- VacFile *root;
- VtConn *z;
- int mode;
- int bsize;
- uvlong qid;
- VtCache *cache;
- };
- VacFs *vacfsopen(VtConn *z, char *file, int mode, int ncache);
- VacFs *vacfsopenscore(VtConn *z, u8int *score, int mode, int ncache);
- VacFs *vacfscreate(VtConn *z, int bsize, int ncache);
- void vacfsclose(VacFs *fs);
- int vacfssync(VacFs *fs);
- int vacfssnapshot(VacFs *fs, char *src, char *dst);
- int vacfsgetscore(VacFs *fs, u8int *score);
- int vacfsgetmaxqid(VacFs*, uvlong*);
- void vacfsjumpqid(VacFs*, uvlong);
- VacFile *vacfsgetroot(VacFs *fs);
- VacFile *vacfileopen(VacFs *fs, char *path);
- VacFile *vacfilecreate(VacFile *file, char *elem, ulong perm);
- VacFile *vacfilewalk(VacFile *file, char *elem);
- int vacfileremove(VacFile *file);
- int vacfileread(VacFile *file, void *buf, int n, vlong offset);
- int vacfileblockscore(VacFile *file, u32int, u8int*);
- int vacfilewrite(VacFile *file, void *buf, int n, vlong offset);
- uvlong vacfilegetid(VacFile *file);
- ulong vacfilegetmcount(VacFile *file);
- int vacfileisdir(VacFile *file);
- int vacfileisroot(VacFile *file);
- ulong vacfilegetmode(VacFile *file);
- int vacfilegetsize(VacFile *file, uvlong *size);
- int vacfilegetdir(VacFile *file, VacDir *dir);
- int vacfilesetdir(VacFile *file, VacDir *dir);
- VacFile *vacfilegetparent(VacFile *file);
- int vacfileflush(VacFile*, int);
- VacFile *vacfileincref(VacFile*);
- int vacfiledecref(VacFile*);
- int vacfilesetsize(VacFile *f, uvlong size);
- int vacfilegetentries(VacFile *f, VtEntry *e, VtEntry *me);
- int vacfilesetentries(VacFile *f, VtEntry *e, VtEntry *me);
- void vdcleanup(VacDir *dir);
- void vdcopy(VacDir *dst, VacDir *src);
- int vacfilesetqidspace(VacFile*, u64int, u64int);
- uvlong vacfilegetqidoffset(VacFile*);
- VacDirEnum *vdeopen(VacFile*);
- int vderead(VacDirEnum*, VacDir *);
- void vdeclose(VacDirEnum*);
- int vdeunread(VacDirEnum*);
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