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