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typedef
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struct Waitmsg
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{
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int pid; /* of loved one */
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unsigned long time[3]; /* of loved one & descendants */
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char *msg;
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} Waitmsg;
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#define STATMAX 65535U /* max length of machine-independent stat structure */
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#define DIRMAX (sizeof(Dir)+STATMAX) /* max length of Dir structure */
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#define ERRMAX 128 /* max length of error string */
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#define MORDER 0x0003 /* mask for bits defining order of mounting */
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#define MREPL 0x0000 /* mount replaces object */
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#define MBEFORE 0x0001 /* mount goes before others in union directory */
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#define MAFTER 0x0002 /* mount goes after others in union directory */
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#define MCREATE 0x0004 /* permit creation in mounted directory */
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#define MCACHE 0x0010 /* cache some data */
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#define MMASK 0x0007 /* all bits on */
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#define OREAD 0 /* open for read */
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#define OWRITE 1 /* write */
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#define ORDWR 2 /* read and write */
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#define OEXEC 3 /* execute, == read but check execute permission */
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#define OTRUNC 16 /* or'ed in (except for exec), truncate file first */
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#define OCEXEC 32 /* or'ed in, close on exec */
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#define ORCLOSE 64 /* or'ed in, remove on close */
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#define OEXCL 0x1000 /* or'ed in, exclusive use (create only) */
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#define AEXIST 0 /* accessible: exists */
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#define AEXEC 1 /* execute access */
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#define AWRITE 2 /* write access */
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#define AREAD 4 /* read access */
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/* Segattch */
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#define SG_RONLY 0040 /* read only */
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#define SG_CEXEC 0100 /* detach on exec */
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#define NCONT 0 /* continue after note */
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#define NDFLT 1 /* terminate after note */
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#define NSAVE 2 /* clear note but hold state */
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#define NRSTR 3 /* restore saved state */
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/* bits in Qid.type */
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#define QTDIR 0x80 /* type bit for directories */
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#define QTAPPEND 0x40 /* type bit for append only files */
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#define QTEXCL 0x20 /* type bit for exclusive use files */
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#define QTMOUNT 0x10 /* type bit for mounted channel */
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#define QTFILE 0x00 /* plain file */
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/* bits in Dir.mode */
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#define DMDIR 0x80000000 /* mode bit for directories */
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#define DMAPPEND 0x40000000 /* mode bit for append only files */
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#define DMEXCL 0x20000000 /* mode bit for exclusive use files */
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#define DMMOUNT 0x10000000 /* mode bit for mounted channel */
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#define DMREAD 0x4 /* mode bit for read permission */
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#define DMWRITE 0x2 /* mode bit for write permission */
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#define DMEXEC 0x1 /* mode bit for execute permission */
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/* rfork */
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enum
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{
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RFNAMEG = (1<<0),
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RFENVG = (1<<1),
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RFFDG = (1<<2),
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RFNOTEG = (1<<3),
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RFPROC = (1<<4),
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RFMEM = (1<<5),
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RFNOWAIT = (1<<6),
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RFCNAMEG = (1<<10),
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RFCENVG = (1<<11),
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RFCFDG = (1<<12),
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RFREND = (1<<13),
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RFNOMNT = (1<<14)
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};
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extern int _AWAIT(char*, int);
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extern int _ALARM(unsigned long);
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extern int _BIND(const char*, const char*, int);
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extern int _CHDIR(const char*);
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extern int _CLOSE(int);
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extern int _CREATE(char*, int, unsigned long);
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extern int _DUP(int, int);
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extern int _ERRSTR(char*, unsigned int);
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extern int _EXEC(char*, char*[]);
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extern void _EXITS(char *);
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extern int _FD2PATH(int, char*, int);
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extern int _FAUTH(int, char*);
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extern int _FSESSION(int, char*, int);
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extern int _FSTAT(int, unsigned char*, int);
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extern int _FWSTAT(int, unsigned char*, int);
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extern int _MOUNT(int, int, const char*, int, const char*);
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extern int _NOTED(int);
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extern int _NOTIFY(int(*)(void*, char*));
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extern int _OPEN(const char*, int);
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extern int _PIPE(int*);
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extern long _PREAD(int, void*, long, long long);
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extern long _PWRITE(int, void*, long, long long);
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extern long _READ(int, void*, long);
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extern int _REMOVE(const char*);
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extern int _RENDEZVOUS(unsigned long, unsigned long);
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extern int _RFORK(int);
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extern int _SEGATTACH(int, char*, void*, unsigned long);
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extern int _SEGBRK(void*, void*);
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extern int _SEGDETACH(void*);
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extern int _SEGFLUSH(void*, unsigned long);
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extern int _SEGFREE(void*, unsigned long);
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extern long long _SEEK(int, long long, int);
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extern int _SEMACQUIRE(long*, int);
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extern long _SEMRELEASE(long*, long);
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extern int _SLEEP(long);
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extern int _STAT(const char*, unsigned char*, int);
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extern Waitmsg* _WAIT(void);
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extern int _TSEMACQUIRE(long*, unsigned long);
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extern long _WRITE(int, const void*, long);
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extern int _WSTAT(const char*, unsigned char*, int);
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extern int __open(char *, int, ...);
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extern int __access(char *, int);
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extern int __chdir(char *);
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extern int __creat(char *, int);
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extern int __link(char *, int);
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extern int __stat(char *, struct stat *);
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extern int __unlink(char *);
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/*
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* atomic
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*/
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long ainc(long*);
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long adec(long*);
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int cas32(unsigned long*, unsigned long, unsigned long);
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int casp(void**, void*, void*);
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int casl(unsigned long*, unsigned long, unsigned long);
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