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Vac works.

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This commit is contained in:
rsc 2004-03-15 01:56:49 +00:00
parent 333c1dccc2
commit 3d77c87e81
14 changed files with 2459 additions and 2994 deletions
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109
src/cmd/vac/vac.h
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@ -1,4 +1,4 @@
typedef struct VacFS VacFS;
typedef struct VacFs VacFs;
typedef struct VacDir VacDir;
typedef struct VacFile VacFile;
typedef struct VacDirEnum VacDirEnum;
@ -6,7 +6,8 @@ typedef struct VacDirEnum VacDirEnum;
/*
* Mode bits
*/
enum {
enum
{
ModeOtherExec = (1<<0),
ModeOtherWrite = (1<<1),
ModeOtherRead = (1<<2),
@ -30,7 +31,8 @@ enum {
ModeSnapshot = (1<<20), /* read only snapshot */
};
enum {
enum
{
MetaMagic = 0x5656fc79,
MetaHeaderSize = 12,
MetaIndexSize = 4,
@ -38,14 +40,16 @@ enum {
DirMagic = 0x1c4d9072,
};
enum {
enum
{
DirPlan9Entry = 1, /* not valid in version >= 9 */
DirNTEntry, /* not valid in version >= 9 */
DirQidSpaceEntry,
DirGenEntry, /* not valid in version >= 9 */
};
struct VacDir {
struct VacDir
{
char *elem; /* path element */
ulong entry; /* entry in directory for data */
ulong gen; /* generation of data entry */
@ -69,58 +73,67 @@ struct VacDir {
ulong p9version;
/* sub space of qid */
int qidSpace;
uvlong qidOffset; /* qid offset */
uvlong qidMax; /* qid maximum */
int qidspace;
uvlong qidoffset; /* qid offset */
uvlong qidmax; /* qid maximum */
};
VacFS *vfsOpen(VtSession *z, char *file, int readOnly, long ncache);
VacFS *vfsCreate(VtSession *z, int bsize, long ncache);
int vfsGetBlockSize(VacFS*);
int vfsIsReadOnly(VacFS*);
VacFile *vfsGetRoot(VacFS*);
long vfsGetCacheSize(VacFS*);
int vfsSetCacheSize(VacFS*, long);
int vfsSnapshot(VacFS*, char *src, char *dst);
int vfsSync(VacFS*);
int vfsClose(VacFS*);
int vfsGetScore(VacFS*, uchar score[VtScoreSize]);
struct VacFs
{
int ref;
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);
/*
* other ideas
*
* VacFS *vfsSnapshot(VacFS*, char *src);
* int vfsGraft(VacFS*, char *name, VacFS*);
* VacFs *vfsSnapshot(VacFs*, char *src);
* int vfsGraft(VacFs*, char *name, VacFs*);
*/
VacFile *vfOpen(VacFS*, char *path);
VacFile *vfCreate(VacFile*, char *elem, ulong perm, char *user);
VacFile *vfWalk(VacFile*, char *elem);
int vfRemove(VacFile*, char*);
int vfRead(VacFile*, void *, int n, vlong offset);
int vfWrite(VacFile*, void *, int n, vlong offset, char *user);
int vfReadPacket(VacFile*, Packet**, vlong offset);
int vfWritePacket(VacFile*, Packet*, vlong offset, char *user);
uvlong vfGetId(VacFile*);
ulong vfGetMcount(VacFile*);
int vfIsDir(VacFile*);
int vfGetBlockScore(VacFile*, ulong bn, uchar score[VtScoreSize]);
int vfGetSize(VacFile*, uvlong *size);
int vfGetDir(VacFile*, VacDir*);
int vfSetDir(VacFile*, VacDir*);
int vfGetVtEntry(VacFile*, VtEntry*);
VacFile *vfGetParent(VacFile*);
int vfSync(VacFile*);
VacFile *vfIncRef(VacFile*);
void vfDecRef(VacFile*);
VacDirEnum *vfDirEnum(VacFile*);
int vfIsRoot(VacFile *vf);
VacFile *vacfileopen(VacFs *fs, char *path);
VacFile *vacfilecreate(VacFile *file, char *elem, ulong perm, char *muid);
VacFile *vacfilewalk(VacFile *file, char *elem);
int vacfileremove(VacFile *file, char *muid);
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, char *muid);
int vacfilereadpacket(VacFile *file, Packet **pp, vlong offset);
int vacfilewritepacket(VacFile *file, Packet *p, vlong offset, char *muid);
uvlong vacfilegetid(VacFile *file);
ulong vacfilegetmcount(VacFile *file);
int vacfileisdir(VacFile *file);
int vacfileisroot(VacFile *file);
int vacfilegetblocksize(VacFile *file, u32int bn, u8int *score);
int vacfilegetsize(VacFile *file, uvlong *size);
int vacfilegetdir(VacFile *file, VacDir *dir);
int vacfilesetdir(VacFile *file, VacDir *dir, char *muid);
int vacfilegetvtentry(VacFile *file, VtEntry *entry);
VacFile *vacfilegetparent(VacFile *file);
int vacfilesync(VacFile*);
VacFile *vacfileincref(VacFile*);
int vacfiledecref(VacFile*);
void vdCleanup(VacDir *dir);
void vdCopy(VacDir *dst, VacDir *src);
void vdcleanup(VacDir *dir);
void vdcopy(VacDir *dst, VacDir *src);
VacDirEnum *vdeOpen(VacFS*, char *path);
int vdeRead(VacDirEnum*, VacDir *, int n);
void vdeFree(VacDirEnum*);
VacDirEnum *vdeopen(VacFile*);
int vderead(VacDirEnum*, VacDir *);
void vdeclose(VacDirEnum*);