mirror of
https://github.com/golang/go
synced 2024-09-04 23:44:16 +00:00
393 lines
11 KiB
C
393 lines
11 KiB
C
/*
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Derived from Inferno include/kern.h and
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Plan 9 from User Space include/libc.h
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http://code.google.com/p/inferno-os/source/browse/include/kern.h
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http://code.swtch.com/plan9port/src/tip/include/libc.h
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Copyright © 1994-1999 Lucent Technologies Inc. All rights reserved.
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Revisions Copyright © 2000-2007 Vita Nuova Holdings Limited (www.vitanuova.com). All rights reserved.
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Portions Copyright © 2001-2007 Russ Cox. All rights reserved.
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Portions Copyright © 2009 The Go Authors. All rights reserved.
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Permission is hereby granted, free of charge, to any person obtaining a copy
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of this software and associated documentation files (the "Software"), to deal
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in the Software without restriction, including without limitation the rights
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to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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copies of the Software, and to permit persons to whom the Software is
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furnished to do so, subject to the following conditions:
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The above copyright notice and this permission notice shall be included in
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all copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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THE SOFTWARE.
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*/
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/*
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* Lib9 is miscellany from the Plan 9 C library that doesn't
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* fit into libutf or into libfmt, but is still missing from traditional
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* Unix C libraries.
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*/
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#ifndef _LIBC_H_
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#define _LIBC_H_ 1
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#if defined(__cplusplus)
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extern "C" {
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#endif
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#include <utf.h>
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#include <fmt.h>
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/*
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* Begin trimmed down usual libc.h
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*/
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#ifndef nil
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#define nil ((void*)0)
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#endif
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#define nelem(x) (sizeof(x)/sizeof((x)[0]))
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#ifndef offsetof
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#define offsetof(s, m) (ulong)(&(((s*)0)->m))
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#endif
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extern char* strecpy(char*, char*, char*);
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extern int tokenize(char*, char**, int);
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extern double p9cputime(void);
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#ifndef NOPLAN9DEFINES
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#define cputime p9cputime
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#endif
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/*
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* one-of-a-kind
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*/
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enum
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{
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PNPROC = 1,
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PNGROUP = 2
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};
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int isInf(double, int);
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extern int p9atoi(char*);
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extern long p9atol(char*);
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extern vlong p9atoll(char*);
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extern double fmtcharstod(int(*)(void*), void*);
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extern char* cleanname(char*);
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extern int exitcode(char*);
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extern void exits(char*);
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extern double frexp(double, int*);
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extern char* p9getenv(char*);
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extern int p9putenv(char*, char*);
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extern int getfields(char*, char**, int, int, char*);
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extern int gettokens(char *, char **, int, char *);
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extern char* getuser(void);
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extern char* p9getwd(char*, int);
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extern void p9longjmp(p9jmp_buf, int);
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extern char* mktemp(char*);
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extern int opentemp(char*);
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extern void p9notejmp(void*, p9jmp_buf, int);
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extern void perror(const char*);
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extern int postnote(int, int, char *);
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extern double p9pow10(int);
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extern char* searchpath(char*);
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extern char* p9ctime(long);
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#define p9setjmp(b) sigsetjmp((void*)(b), 1)
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extern void sysfatal(char*, ...);
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#ifndef NOPLAN9DEFINES
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#define atoi p9atoi
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#define atol p9atol
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#define atoll p9atoll
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#define getenv p9getenv
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#define getwd p9getwd
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#define longjmp p9longjmp
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#undef setjmp
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#define setjmp p9setjmp
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#define putenv p9putenv
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#define notejmp p9notejmp
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#define jmp_buf p9jmp_buf
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#define pow10 p9pow10
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#undef strtod
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#define strtod fmtstrtod
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#define charstod fmtcharstod
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#define ctime p9ctime
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#endif
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/*
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* system calls
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*
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*/
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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 0x0017 /* 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 ORCLOSE 64 /* or'ed in, remove on close */
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#define ODIRECT 128 /* or'ed in, direct access */
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#define OEXCL 0x1000 /* or'ed in, exclusive use (create only) */
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#define OAPPEND 0x4000 /* or'ed in, append 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 QTAUTH 0x08 /* type bit for authentication file */
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#define QTTMP 0x04 /* type bit for non-backed-up file */
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#define QTSYMLINK 0x02 /* type bit for symbolic link */
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#define QTFILE 0x00 /* type bits for 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 DMAUTH 0x08000000 /* mode bit for authentication file */
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#define DMTMP 0x04000000 /* mode bit for non-backed-up file */
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#define DMSYMLINK 0x02000000 /* mode bit for symbolic link (Unix, 9P2000.u) */
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#define DMDEVICE 0x00800000 /* mode bit for device file (Unix, 9P2000.u) */
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#define DMNAMEDPIPE 0x00200000 /* mode bit for named pipe (Unix, 9P2000.u) */
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#define DMSOCKET 0x00100000 /* mode bit for socket (Unix, 9P2000.u) */
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#define DMSETUID 0x00080000 /* mode bit for setuid (Unix, 9P2000.u) */
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#define DMSETGID 0x00040000 /* mode bit for setgid (Unix, 9P2000.u) */
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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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#ifdef RFMEM /* FreeBSD, OpenBSD, NetBSD */
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#undef RFFDG
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#undef RFNOTEG
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#undef RFPROC
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#undef RFMEM
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#undef RFNOWAIT
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#undef RFCFDG
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#undef RFNAMEG
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#undef RFENVG
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#undef RFCENVG
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#undef RFCFDG
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#undef RFCNAMEG
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#endif
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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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typedef
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struct Qid
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{
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uvlong path;
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ulong vers;
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uchar type;
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} Qid;
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typedef
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struct Dir {
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/* system-modified data */
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ushort type; /* server type */
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uint dev; /* server subtype */
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/* file data */
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Qid qid; /* unique id from server */
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ulong mode; /* permissions */
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ulong atime; /* last read time */
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ulong mtime; /* last write time */
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vlong length; /* file length */
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char *name; /* last element of path */
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char *uid; /* owner name */
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char *gid; /* group name */
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char *muid; /* last modifier name */
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/* 9P2000.u extensions */
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uint uidnum; /* numeric uid */
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uint gidnum; /* numeric gid */
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uint muidnum; /* numeric muid */
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char *ext; /* extended info */
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} Dir;
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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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ulong time[3]; /* of loved one & descendants */
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char *msg;
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} Waitmsg;
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extern void _exits(char*);
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extern void abort(void);
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extern long p9alarm(ulong);
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extern int await(char*, int);
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extern int awaitfor(int, char*, int);
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extern int awaitnohang(char*, int);
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extern int p9chdir(char*);
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extern int close(int);
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extern int p9create(char*, int, ulong);
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extern int p9dup(int, int);
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extern int errstr(char*, uint);
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extern int p9exec(char*, char*[]);
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extern int p9execl(char*, ...);
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extern int p9rfork(int);
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extern int noted(int);
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extern int notify(void(*)(void*, char*));
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extern int noteenable(char*);
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extern int notedisable(char*);
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extern int notifyon(char*);
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extern int notifyoff(char*);
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extern int p9open(char*, int);
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extern int fd2path(int, char*, int);
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extern long readn(int, void*, long);
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extern int remove(const char*);
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extern vlong p9seek(int, vlong, int);
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extern int p9sleep(long);
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extern Waitmsg* p9wait(void);
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extern Waitmsg* p9waitfor(int);
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extern Waitmsg* waitnohang(void);
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extern int p9waitpid(void);
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extern ulong rendezvous(ulong, ulong);
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extern char* getgoos(void);
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extern char* getgoarch(void);
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extern char* getgoroot(void);
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extern char* getgoversion(void);
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#ifdef _WIN32
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#ifndef _WIN64
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struct timespec {
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int tv_sec;
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long tv_nsec;
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};
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#define execv(prog, argv) execv(prog, (const char* const*)(argv))
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#define execvp(prog, argv) execvp(prog, (const char**)(argv))
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#endif
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extern int nanosleep(const struct timespec *rqtp, struct timespec *rmtp);
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extern int fork(void);
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extern int pread(int fd, void *buf, int n, int off);
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extern int pwrite(int fd, void *buf, int n, int off);
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#undef getwd
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#define getwd(s, ns) getcwd(s, ns)
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#undef lseek
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#define lseek(fd, n, base) _lseeki64(fd, n, base)
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#define mkdir(path, perm) mkdir(path)
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#define pipe(fd) _pipe(fd, 512, O_BINARY)
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#else
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#define O_BINARY 0
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#endif
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#ifndef NOPLAN9DEFINES
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#define alarm p9alarm
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#define dup p9dup
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#define exec p9exec
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#define execl p9execl
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#define seek p9seek
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#define sleep p9sleep
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#define wait p9wait
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#define waitpid p9waitpid
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#define rfork p9rfork
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#define create p9create
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#undef open
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#define open p9open
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#define waitfor p9waitfor
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#endif
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extern Dir* dirstat(char*);
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extern Dir* dirfstat(int);
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extern int dirwstat(char*, Dir*);
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extern int dirfwstat(int, Dir*);
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extern void nulldir(Dir*);
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extern long dirreadall(int, Dir**);
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extern void rerrstr(char*, uint);
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extern char* sysname(void);
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extern void werrstr(char*, ...);
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extern char* getns(void);
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extern char* get9root(void);
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extern char* unsharp(char*);
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/* external names that we don't want to step on */
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#ifndef NOPLAN9DEFINES
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#define main p9main
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#endif
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/* compiler directives on plan 9 */
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#define SET(x) ((x)=0)
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#define USED(x) if(x){}else{}
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#ifdef __GNUC__
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# if __GNUC__ >= 3
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# undef USED
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# define USED(x) ((void)(x))
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# endif
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#endif
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/* command line */
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extern char *argv0;
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extern void __fixargv0(void);
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#define ARGBEGIN for((argv0?0:(argv0=(__fixargv0(),*argv))),argv++,argc--;\
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argv[0] && argv[0][0]=='-' && argv[0][1];\
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argc--, argv++) {\
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char *_args, *_argt;\
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Rune _argc;\
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_args = &argv[0][1];\
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if(_args[0]=='-' && _args[1]==0){\
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argc--; argv++; break;\
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}\
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_argc = 0;\
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while(*_args && (_args += chartorune(&_argc, _args)))\
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switch(_argc)
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#define ARGEND SET(_argt);USED(_argt);USED(_argc);USED(_args);}USED(argv);USED(argc);
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#define ARGF() (_argt=_args, _args="",\
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(*_argt? _argt: argv[1]? (argc--, *++argv): 0))
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#define EARGF(x) (_argt=_args, _args="",\
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(*_argt? _argt: argv[1]? (argc--, *++argv): ((x), abort(), (char*)0)))
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#define ARGC() _argc
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#if defined(__cplusplus)
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}
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#endif
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#endif /* _LIB9_H_ */
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