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- /*
- * This file is part of the UCB release of Plan 9. It is subject to the license
- * terms in the LICENSE file found in the top-level directory of this
- * distribution and at http://akaros.cs.berkeley.edu/files/Plan9License. No
- * part of the UCB release of Plan 9, including this file, may be copied,
- * modified, propagated, or distributed except according to the terms contained
- * in the LICENSE file.
- */
- #define g2byte(x) (((x)[1]<<8) + (x)[0]) /* little-endian */
- #define g3byte(x) (((x)[2]<<16) + ((x)[1]<<8) + (x)[0])
- #define g4byte(x) (((x)[3]<<24) + ((x)[2]<<16) + ((x)[1]<<8) + (x)[0])
- /* big endian */
- #define b4byte(x) (((x)[0]<<24) + ((x)[1]<<16) + ((x)[2]<<8) + (x)[3])
- #define b8byte(x) (((vlong)b4byte(x)<<32) | (u32int)b4byte((x)+4))
- enum
- {
- OPERM = 0x3, /* mask of all permission types in open mode */
- Nram = 512,
- Maxbuf = 8192, /* max buffer size */
- };
- typedef struct Fid Fid;
- typedef struct Ram Ram;
- struct Fid
- {
- short busy;
- short open;
- short rclose;
- int fid;
- Fid *next;
- char *user;
- Ram *ram;
- };
- struct Ram
- {
- char busy;
- char open;
- char replete;
- Ram *parent; /* parent directory */
- Ram *child; /* first member of directory */
- Ram *next; /* next member of file's directory */
- Qid qid;
- long perm;
- char *name;
- uint32_t atime;
- uint32_t mtime;
- char *user;
- char *group;
- vlong addr;
- void *data;
- vlong ndata;
- };
- enum
- {
- Pexec = 1,
- Pwrite = 2,
- Pread = 4,
- Pother = 1,
- Pgroup = 8,
- Powner = 64,
- };
- typedef struct idmap {
- char *name;
- int id;
- } Idmap;
- typedef struct fileinf {
- char *name;
- vlong addr;
- void *data;
- vlong size;
- int mode;
- int uid;
- int gid;
- long mdate;
- } Fileinf;
- extern uint32_t path; /* incremented for each new file */
- extern Ram *ram;
- extern char *user;
- extern Idmap *uidmap;
- extern Idmap *gidmap;
- extern int replete;
- extern int blocksize;
- void error(char*);
- void *erealloc(void*, uint32_t);
- void *emalloc(uint32_t);
- char *estrdup(char*);
- void populate(char *);
- void dotrunc(Ram*);
- void docreate(Ram*);
- char *doread(Ram*, vlong, long);
- void dowrite(Ram*, char*, long, long);
- int dopermw(Ram*);
- Idmap *getpass(char*);
- char *mapid(Idmap*,int);
- Ram *poppath(Fileinf fi, int new);
- Ram *popfile(Ram *dir, Fileinf fi);
- void popdir(Ram*);
- Ram *lookup(Ram*, char*);
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