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File system access library.

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rsc 2005-07-13 03:48:35 +00:00
parent be7cbb4ef2
commit 0c98da8bf8
16 changed files with 2967 additions and 0 deletions
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94
include/diskfs.h Normal file
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/* Copyright (c) Russ Cox, MIT; see src/libdiskfs/COPYRIGHT */
AUTOLIB(diskfs)
typedef struct Block Block;
typedef struct Disk Disk;
typedef struct Fsys Fsys;
#ifndef _NFS3H_ /* in case sunrpc.h, nfs3.h are not included */
typedef struct SunAuthUnix SunAuthUnix;
typedef struct Nfs3Attr Nfs3Attr;
typedef struct Nfs3Entry Nfs3Entry;
typedef struct Nfs3Handle Nfs3Handle;
typedef int Nfs3Status;
#endif
struct VtCache;
struct Disk
{
Block *(*_read)(Disk *disk, u32int count, u64int offset);
int (*_sync)(Disk*);
void (*_close)(Disk*);
void *priv;
};
struct Block
{
Disk *disk;
u32int len;
uchar *data;
void (*_close)(Block*);
void *priv;
};
struct Fsys
{
u32int blocksize;
u32int nblock;
char *type;
Disk *disk;
Block *(*_readblock)(Fsys *fsys, u64int blockno);
int (*_sync)(Fsys *fsys);
void (*_close)(Fsys *fsys);
Nfs3Status (*_root)(Fsys*, Nfs3Handle*);
Nfs3Status (*_access)(Fsys*, SunAuthUnix*, Nfs3Handle*, u32int, u32int*, Nfs3Attr*);
Nfs3Status (*_lookup)(Fsys*, SunAuthUnix*, Nfs3Handle*, char*, Nfs3Handle*);
Nfs3Status (*_getattr)(Fsys*, SunAuthUnix*, Nfs3Handle*, Nfs3Attr*);
Nfs3Status (*_readdir)(Fsys *fsys, SunAuthUnix*, Nfs3Handle *h, u32int count, u64int cookie, uchar**, u32int*, uchar*);
Nfs3Status (*_readfile)(Fsys *fsys, SunAuthUnix*, Nfs3Handle *h, u32int count, u64int offset, uchar**, u32int*, uchar*);
Nfs3Status (*_readlink)(Fsys *fsys, SunAuthUnix*, Nfs3Handle *h, char **link);
void *priv;
};
struct Handle
{
uchar h[64];
int len;
};
void blockdump(Block *b, char *desc);
void blockput(Block *b);
Disk* diskcache(Disk*, uint, uint);
Disk* diskopenventi(struct VtCache*, uchar*);
Disk* diskopenfile(char *file);
Disk* diskopen(char *file);
void diskclose(Disk *disk);
Block* diskread(Disk *disk, u32int, u64int offset);
int disksync(Disk *disk);
Fsys* fsysopenffs(Disk*);
Fsys* fsysopenkfs(Disk*);
Fsys* fsysopenext2(Disk*);
Fsys* fsysopenfat(Disk*);
Fsys* fsysopen(Disk *disk);
Block* fsysreadblock(Fsys *fsys, u64int blockno);
int fsyssync(Fsys *fsys);
void fsysclose(Fsys *fsys);
Nfs3Status fsysroot(Fsys *fsys, Nfs3Handle *h);
Nfs3Status fsyslookup(Fsys *fsys, SunAuthUnix*, Nfs3Handle *h, char *name, Nfs3Handle *nh);
Nfs3Status fsysgetattr(Fsys *fsys, SunAuthUnix*, Nfs3Handle *h, Nfs3Attr *attr);
Nfs3Status fsysreaddir(Fsys *fsys, SunAuthUnix*, Nfs3Handle *h, u32int count, u64int cookie, uchar **e, u32int *ne, uchar*);
Nfs3Status fsysreadfile(Fsys *fsys, SunAuthUnix*, Nfs3Handle *h, u32int, u64int, uchar**, u32int*, uchar*);
Nfs3Status fsysreadlink(Fsys *fsys, SunAuthUnix*, Nfs3Handle *h, char **plink);
Nfs3Status fsysaccess(Fsys *fsys, SunAuthUnix*, Nfs3Handle*, u32int, u32int*, Nfs3Attr*);
void* emalloc(ulong size); /* provided by caller */
extern int allowall;