/* * Lib9 is miscellany from the Plan 9 C library that doesn't * fit into libutf or into libfmt, but is still missing from traditional * Unix C libraries. */ #ifndef _LIB9H_ #define _LIB9H_ 1 #if defined(__cplusplus) extern "C" { #endif #include #include #include #include #include #include #include #ifndef _FMTH_ # include #endif #define nil ((void*)0) #define nelem(x) (sizeof(x)/sizeof((x)[0])) #define _NEEDUCHAR 1 #define _NEEDUSHORT 1 #define _NEEDUINT 1 #define _NEEDULONG 1 #if defined(__linux__) # include # if defined(__USE_MISC) # undef _NEEDUSHORT # undef _NEEDUINT # undef _NEEDULONG # endif #endif #if defined(__FreeBSD__) # include # if !defined(_POSIX_SOURCE) # undef _NEEDUSHORT # undef _NEEDUINT # endif #endif #if defined(__APPLE__) # include # undef _NEEDUSHORT # undef _NEEDUINT #endif typedef signed char schar; typedef unsigned int u32int; #ifdef _NEEDUCHAR typedef unsigned char uchar; #endif #ifdef _NEEDUSHORT typedef unsigned short ushort; #endif #ifdef _NEEDUINT typedef unsigned int uint; #endif #ifdef _NEEDULONG typedef unsigned long ulong; #endif typedef unsigned long long uvlong; typedef long long vlong; #define NAMELEN 28 #define CHDIR 0x80000000 /* mode bit for directories */ #define CHAPPEND 0x40000000 /* mode bit for append only files */ #define CHEXCL 0x20000000 /* mode bit for exclusive use files */ #define CHMOUNT 0x10000000 /* mode bit for mounted channel */ #define CHREAD 0x4 /* mode bit for read permission */ #define CHWRITE 0x2 /* mode bit for write permission */ #define CHEXEC 0x1 /* mode bit for execute permission */ /* rfork to create new process running fn(arg) */ #if defined(__FreeBSD__) #undef RFFDG #undef RFNOTEG #undef RFPROC #undef RFMEM #undef RFNOWAIT #undef RFCFDG #endif 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 ffork(int, void(*)(void*), void*); /* wait for processes */ #define wait _p9wait typedef struct Waitmsg Waitmsg; struct Waitmsg { int pid; /* of loved one */ ulong time[3]; /* of loved one & descendants */ char *msg; }; extern int await(char*, int); extern Waitmsg* wait(void); /* synchronization */ typedef struct Lock Lock; struct Lock { int val; }; extern int _tas(void*); extern void lock(Lock*); extern void unlock(Lock*); extern int canlock(Lock*); typedef struct QLp QLp; struct QLp { int inuse; QLp *next; int state; }; typedef struct QLock QLock; struct QLock { Lock lock; int locked; QLp *head; QLp *tail; }; extern void qlock(QLock*); extern void qunlock(QLock*); extern int canqlock(QLock*); extern void _qlockinit(ulong (*)(ulong, ulong)); typedef struct RWLock RWLock; struct RWLock { Lock lock; int readers; int writer; QLp *head; QLp *tail; }; extern void rlock(RWLock*); extern void runlock(RWLock*); extern int canrlock(RWLock*); extern void wlock(RWLock*); extern void wunlock(RWLock*); extern int canwlock(RWLock*); typedef struct Rendez Rendez; struct Rendez { QLock *l; QLp *head; QLp *tail; }; extern void rsleep(Rendez*); extern int rwakeup(Rendez*); extern int rwakeupall(Rendez*); extern ulong rendezvous(ulong, ulong); typedef struct Qid Qid; typedef struct Dir Dir; struct Qid { ulong path; ulong vers; }; struct Dir { char name[NAMELEN]; char uid[NAMELEN]; char gid[NAMELEN]; Qid qid; ulong mode; long atime; long mtime; vlong length; ushort type; ushort dev; }; extern int dirstat(char*, Dir*); extern int dirfstat(int, Dir*); extern int dirwstat(char*, Dir*); extern int dirfwstat(int, Dir*); /* one of a kind */ extern void sysfatal(char*, ...); extern int nrand(int); extern long lrand(void); extern void setmalloctag(void*, ulong); extern void setrealloctag(void*, ulong); extern void *mallocz(ulong, int); extern long readn(int, void*, long); extern void exits(char*); extern void _exits(char*); extern ulong getcallerpc(void*); extern char* cleanname(char*); /* string routines */ extern char* strecpy(char*, char*, char*); extern int tokenize(char*, char**, int); extern int cistrncmp(char*, char*, int); extern int cistrcmp(char*, char*); extern char* cistrstr(char*, char*); extern int getfields(char*, char**, int, int, char*); extern int gettokens(char *, char **, int, char *); /* formatting helpers */ extern int dec64(uchar*, int, char*, int); extern int enc64(char*, int, uchar*, int); extern int dec32(uchar*, int, char*, int); extern int enc32(char*, int, uchar*, int); extern int dec16(uchar*, int, char*, int); extern int enc16(char*, int, uchar*, int); extern int encodefmt(Fmt*); /* error string */ enum { ERRMAX = 128 }; extern void rerrstr(char*, uint); extern void werrstr(char*, ...); extern int errstr(char*, uint); /* compiler directives on plan 9 */ #define USED(x) if(x){}else{} #define SET(x) ((x)=0) /* command line */ extern char *argv0; extern void __fixargv0(void); #define ARGBEGIN for((argv0||(argv0=(__fixargv0(),*argv))),argv++,argc--;\ argv[0] && argv[0][0]=='-' && argv[0][1];\ argc--, argv++) {\ char *_args, *_argt;\ Rune _argc;\ _args = &argv[0][1];\ if(_args[0]=='-' && _args[1]==0){\ argc--; argv++; break;\ }\ _argc = 0;\ while(*_args && (_args += chartorune(&_argc, _args)))\ switch(_argc) #define ARGEND SET(_argt);USED(_argt);USED(_argc);USED(_args);}USED(argv);USED(argc); #define ARGF() (_argt=_args, _args="",\ (*_argt? _argt: argv[1]? (argc--, *++argv): 0)) #define EARGF(x) (_argt=_args, _args="",\ (*_argt? _argt: argv[1]? (argc--, *++argv): ((x), abort(), (char*)0))) #define ARGC() _argc #define OREAD O_RDONLY #define OWRITE O_WRONLY #define ORDWR O_RDWR #define AEXIST 0 #define AREAD 4 #define AWRITE 2 #define AEXEC 1 #define ORCLOSE 8 #define OCEXEC 16 #define dup dup2 #define exec execv #define seek lseek #define getwd getcwd #if defined(__cplusplus) } #endif #endif /* _LIB9H_ */