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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.
- */
- /*
- * functions (possibly) linked in, complete, from libc.
- */
- #define nelem(x) (sizeof(x)/sizeof((x)[0]))
- #define offsetof(s, m) (uint64_t)(&(((s*)0)->m))
- #define assert(x) if(x){}else _assert("x")
- /*
- * mem routines
- */
- extern void* memccpy(void*, void*, int, uint32_t);
- extern void* memset(void*, int, uint32_t);
- extern int memcmp(void*, void*, uint32_t);
- extern void* memmove(void*, void*, uint32_t);
- extern void* memchr(void*, int, uint32_t);
- /*
- * string routines
- */
- extern char* strcat(char*, char*);
- extern char* strchr(char*, int);
- extern int strcmp(char*, char*);
- extern char* strcpy(char*, char*);
- extern char* strecpy(char*, char*, char*);
- extern char* strncat(char*, char*, int32_t);
- extern char* strncpy(char*, char*, int32_t);
- extern int strncmp(char*, char*, int32_t);
- extern char* strrchr(char*, int);
- extern int32_t strlen(char*);
- extern char* strstr(char*, char*);
- extern int cistrncmp(char*, char*, int);
- extern int cistrcmp(char*, char*);
- extern int tokenize(char*, char**, int);
- enum
- {
- UTFmax = 3, /* maximum bytes per rune */
- Runesync = 0x80, /* cannot represent part of a UTF sequence */
- Runeself = 0x80, /* rune and UTF sequences are the same (<) */
- Runeerror = 0xFFFD, /* decoding error in UTF */
- };
- /*
- * rune routines
- */
- extern int runetochar(char*, Rune*);
- extern int chartorune(Rune*, char*);
- extern int runelen(int32_t);
- extern int fullrune(char*, int);
- extern int utflen(char*);
- extern int utfnlen(char*, int32_t);
- extern char* utfrune(char*, int32_t);
- /*
- * malloc
- */
- extern void* malloc(uint32_t);
- extern void* mallocz(uint32_t, int);
- extern void free(void*);
- extern uint32_t msize(void*);
- extern void* mallocalign(uint32_t, uint32_t, int32_t, uint32_t);
- extern void setmalloctag(void*, uint32_t);
- extern void setrealloctag(void*, uint32_t);
- extern uint32_t getmalloctag(void*);
- extern uint32_t getrealloctag(void*);
- extern void* realloc(void *, uint32_t);
- /*
- * print routines
- */
- typedef struct Fmt Fmt;
- struct Fmt{
- unsigned char runes; /* output buffer is runes or chars? */
- void *start; /* of buffer */
- void *to; /* current place in the buffer */
- void *stop; /* end of the buffer; overwritten if flush fails */
- int (*flush)(Fmt *); /* called when to == stop */
- void *farg; /* to make flush a closure */
- int nfmt; /* num chars formatted so far */
- va_list args; /* args passed to dofmt */
- int r; /* % format Rune */
- int width;
- int prec;
- uint32_t flags;
- };
- enum {
- FmtWidth = 1,
- FmtLeft = FmtWidth<<1,
- FmtPrec = FmtLeft<<1,
- FmtSharp = FmtPrec<<1,
- FmtSpace = FmtSharp<<1,
- FmtSign = FmtSpace<<1,
- FmtZero = FmtSign<<1,
- FmtUnsigned = FmtZero<<1,
- FmtShort = FmtUnsigned<<1,
- FmtLong = FmtShort<<1,
- FmtVLong = FmtLong<<1,
- FmtComma = FmtVLong<<1,
- FmtByte = FmtComma<<1,
- FmtFlag = FmtByte<<1
- };
- extern int print(char*, ...);
- extern char* seprint(char*, char*, char*, ...);
- extern char* vseprint(char*, char*, char*, va_list);
- extern int snprint(char*, int, char*, ...);
- extern int vsnprint(char*, int, char*, va_list);
- extern int sprint(char*, char*, ...);
- #pragma varargck argpos fmtprint 2
- #pragma varargck argpos print 1
- #pragma varargck argpos seprint 3
- #pragma varargck argpos snprint 3
- #pragma varargck argpos sprint 2
- #pragma varargck type "lld" int64_t
- #pragma varargck type "llx" int64_t
- #pragma varargck type "lld" uint64_t
- #pragma varargck type "llx" uint64_t
- #pragma varargck type "ld" long
- #pragma varargck type "lx" long
- #pragma varargck type "ld" uint32_t
- #pragma varargck type "lx" uint32_t
- #pragma varargck type "d" int
- #pragma varargck type "x" int
- #pragma varargck type "c" int
- #pragma varargck type "C" int
- #pragma varargck type "d" uint
- #pragma varargck type "x" uint
- #pragma varargck type "c" uint
- #pragma varargck type "C" uint
- #pragma varargck type "s" char*
- #pragma varargck type "q" char*
- #pragma varargck type "S" Rune*
- #pragma varargck type "%" void
- #pragma varargck type "p" uintptr
- #pragma varargck type "p" void*
- #pragma varargck flag ','
- extern int fmtinstall(int, int (*)(Fmt*));
- extern int fmtprint(Fmt*, char*, ...);
- extern int fmtstrcpy(Fmt*, char*);
- extern char* fmtstrflush(Fmt*);
- extern int fmtstrinit(Fmt*);
- /*
- * quoted strings
- */
- extern void quotefmtinstall(void);
- /*
- * Time-of-day
- */
- extern void cycles(uint64_t*); /* 64-bit value of the cycle counter if there is one, 0 if there isn't */
- /*
- * NIX core types
- */
- enum
- {
- NIXTC = 0,
- NIXKC,
- NIXAC,
- NIXXC,
- NIXROLES,
- };
- /*
- * one-of-a-kind
- */
- extern int abs(int);
- extern int atoi(char*);
- extern char* cleanname(char*);
- extern int dec64(unsigned char*, int, char*, int);
- extern uintptr_t getcallerpc(void*);
- extern int getfields(char*, char**, int, int, char*);
- extern int gettokens(char *, char **, int, char *);
- extern int32_t strtol(char*, char**, int);
- extern uint32_t strtoul(char*, char**, int);
- extern int64_t strtoll(char*, char**, int);
- extern uint64_t strtoull(char*, char**, int);
- extern void qsort(void*, int32_t, int32_t,
- int (*)(const void*, const void*));
- /*
- * Syscall data structures
- */
- #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 0x0017 /* 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 create */
- #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 */
- typedef struct Qid Qid;
- typedef struct Dir Dir;
- typedef struct OWaitmsg OWaitmsg;
- typedef struct Waitmsg Waitmsg;
- #define ERRMAX 128 /* max length of error string */
- #define KNAMELEN 28 /* max length of name held in kernel */
- /* 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 QTAUTH 0x08 /* type bit for authentication file */
- #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 */
- struct Qid
- {
- uint64_t path;
- uint32_t vers;
- unsigned char type;
- };
- struct Dir {
- /* system-modified data */
- uint16_t type; /* server type */
- uint dev; /* server subtype */
- /* file data */
- Qid qid; /* unique id from server */
- uint32_t mode; /* permissions */
- uint32_t atime; /* last read time */
- uint32_t mtime; /* last write time */
- int64_t length; /* file length: see <u.h> */
- char *name; /* last element of path */
- char *uid; /* owner name */
- char *gid; /* group name */
- char *muid; /* last modifier name */
- };
- struct OWaitmsg
- {
- char pid[12]; /* of loved one */
- char time[3*12]; /* of loved one and descendants */
- char msg[64]; /* compatibility BUG */
- };
- struct Waitmsg
- {
- int pid; /* of loved one */
- uint32_t time[3]; /* of loved one and descendants */
- char msg[ERRMAX]; /* actually variable-size in user mode */
- };
- /*
- * Zero-copy I/O
- */
- typedef struct Zio Zio;
- struct Zio
- {
- void* data;
- uint32_t size;
- };
- extern char etext[];
- extern char edata[];
- extern char end[];
- /* debugging. */
- void __print_func_entry(const char *func, const char *file);
- void __print_func_exit(const char *func, const char *file);
- #define print_func_entry() __print_func_entry(__FUNCTION__, __FILE__)
- #define print_func_exit() __print_func_exit(__FUNCTION__, __FILE__)
- extern int printx_on;
- void set_printx(int mode);
- /* compiler directives on plan 9 */
- #define SET(x) ((x)=0)
- #define USED(x) if(x){}else{}
- #ifdef __GNUC__
- # if __GNUC__ >= 3
- # undef USED
- # define USED(x) ((void)(x))
- # endif
- #endif
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