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typedef struct VacFs VacFs;
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typedef struct VacDir VacDir;
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typedef struct VacFile VacFile;
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typedef struct VacDirEnum VacDirEnum;
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#pragma incomplete VacFile
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#pragma incomplete VacDirEnum
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/*
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* Mode bits
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*/
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enum
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{
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ModeOtherExec = (1<<0),
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ModeOtherWrite = (1<<1),
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ModeOtherRead = (1<<2),
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ModeGroupExec = (1<<3),
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ModeGroupWrite = (1<<4),
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ModeGroupRead = (1<<5),
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ModeOwnerExec = (1<<6),
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ModeOwnerWrite = (1<<7),
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ModeOwnerRead = (1<<8),
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ModeSticky = (1<<9),
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ModeSetUid = (1<<10),
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ModeSetGid = (1<<11),
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ModeAppend = (1<<12), /* append only file */
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ModeExclusive = (1<<13), /* lock file - plan 9 */
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ModeLink = (1<<14), /* sym link */
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ModeDir = (1<<15), /* duplicate of DirEntry */
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ModeHidden = (1<<16), /* MS-DOS */
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ModeSystem = (1<<17), /* MS-DOS */
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ModeArchive = (1<<18), /* MS-DOS */
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ModeTemporary = (1<<19), /* MS-DOS */
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ModeSnapshot = (1<<20), /* read only snapshot */
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ModeDevice = (1<<21), /* Unix device */
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ModeNamedPipe = (1<<22) /* Unix named pipe */
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};
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enum
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{
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MetaMagic = 0x5656fc79,
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MetaHeaderSize = 12,
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MetaIndexSize = 4,
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IndexEntrySize = 8,
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DirMagic = 0x1c4d9072
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};
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enum
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{
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DirPlan9Entry = 1, /* not valid in version >= 9 */
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DirNTEntry, /* not valid in version >= 9 */
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DirQidSpaceEntry,
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DirGenEntry /* not valid in version >= 9 */
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};
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struct VacDir
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{
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char *elem; /* path element */
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ulong entry; /* entry in directory for data */
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ulong gen; /* generation of data entry */
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ulong mentry; /* entry in directory for meta */
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ulong mgen; /* generation of meta entry */
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uvlong size; /* size of file */
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uvlong qid; /* unique file id */
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char *uid; /* owner id */
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char *gid; /* group id */
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char *mid; /* last modified by */
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ulong mtime; /* last modified time */
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ulong mcount; /* number of modifications: can wrap! */
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ulong ctime; /* directory entry last changed */
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ulong atime; /* last time accessed */
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ulong mode; /* various mode bits */
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/* plan 9 */
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int plan9;
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uvlong p9path;
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ulong p9version;
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/* sub space of qid */
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int qidspace;
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uvlong qidoffset; /* qid offset */
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uvlong qidmax; /* qid maximum */
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};
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struct VacFs
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{
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char name[128];
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uchar score[VtScoreSize];
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VacFile *root;
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VtConn *z;
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int mode;
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int bsize;
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uvlong qid;
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VtCache *cache;
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};
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VacFs *vacfsopen(VtConn *z, char *file, int mode, int ncache);
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VacFs *vacfsopenscore(VtConn *z, u8int *score, int mode, int ncache);
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VacFs *vacfscreate(VtConn *z, int bsize, int ncache);
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void vacfsclose(VacFs *fs);
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int vacfssync(VacFs *fs);
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int vacfssnapshot(VacFs *fs, char *src, char *dst);
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int vacfsgetscore(VacFs *fs, u8int *score);
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int vacfsgetmaxqid(VacFs*, uvlong*);
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void vacfsjumpqid(VacFs*, uvlong);
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VacFile *vacfsgetroot(VacFs *fs);
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VacFile *vacfileopen(VacFs *fs, char *path);
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VacFile *vacfilecreate(VacFile *file, char *elem, ulong perm);
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VacFile *vacfilewalk(VacFile *file, char *elem);
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int vacfileremove(VacFile *file);
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int vacfileread(VacFile *file, void *buf, int n, vlong offset);
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int vacfileblockscore(VacFile *file, u32int, u8int*);
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int vacfilewrite(VacFile *file, void *buf, int n, vlong offset);
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uvlong vacfilegetid(VacFile *file);
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ulong vacfilegetmcount(VacFile *file);
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int vacfileisdir(VacFile *file);
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int vacfileisroot(VacFile *file);
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ulong vacfilegetmode(VacFile *file);
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int vacfilegetsize(VacFile *file, uvlong *size);
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int vacfilegetdir(VacFile *file, VacDir *dir);
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int vacfilesetdir(VacFile *file, VacDir *dir);
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VacFile *vacfilegetparent(VacFile *file);
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int vacfileflush(VacFile*, int);
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VacFile *vacfileincref(VacFile*);
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int vacfiledecref(VacFile*);
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int vacfilesetsize(VacFile *f, uvlong size);
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129 |
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int vacfilegetentries(VacFile *f, VtEntry *e, VtEntry *me);
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int vacfilesetentries(VacFile *f, VtEntry *e, VtEntry *me);
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void vdcleanup(VacDir *dir);
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void vdcopy(VacDir *dst, VacDir *src);
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int vacfilesetqidspace(VacFile*, u64int, u64int);
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uvlong vacfilegetqidoffset(VacFile*);
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VacDirEnum *vdeopen(VacFile*);
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int vderead(VacDirEnum*, VacDir *);
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void vdeclose(VacDirEnum*);
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int vdeunread(VacDirEnum*);
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int vacfiledsize(VacFile *f);
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int sha1matches(VacFile *f, ulong b, uchar *buf, int n);
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