249 lines
7.4 KiB
C
249 lines
7.4 KiB
C
/*
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* functions (possibly) linked in, complete, from libc.
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*/
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#define nelem(x) (sizeof(x)/sizeof((x)[0]))
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#define offsetof(s, m) (ulong)(&(((s*)0)->m))
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#define assert(x) if(x){}else _assert("x")
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/*
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* mem routines
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*/
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extern void* memccpy(void*, void*, int, usize);
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extern void* memset(void*, int, usize);
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extern int memcmp(void*, void*, usize);
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extern void* memmove(void*, void*, usize);
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extern void* memchr(void*, int, usize);
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/*
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* string routines
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*/
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extern char* strcat(char*, char*);
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extern char* strchr(char*, int);
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extern char* strrchr(char*, int);
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extern int strcmp(char*, char*);
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extern char* strcpy(char*, char*);
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extern char* strecpy(char*, char*, char*);
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extern char* strncat(char*, char*, long);
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extern char* strncpy(char*, char*, long);
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extern int strncmp(char*, char*, long);
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extern long strlen(char*);
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extern char* strstr(char*, char*);
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extern int atoi(char*);
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extern int fullrune(char*, int);
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extern int cistrcmp(char*, char*);
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extern int cistrncmp(char*, char*, int);
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enum
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{
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UTFmax = 4, /* maximum bytes per rune */
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Runesync = 0x80, /* cannot represent part of a UTF sequence */
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Runeself = 0x80, /* rune and UTF sequences are the same (<) */
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Runeerror = 0xFFFD, /* decoding error in UTF */
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Runemax = 0x10FFFF, /* 21 bit rune */
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};
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/*
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* rune routines
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*/
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extern int runetochar(char*, Rune*);
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extern int chartorune(Rune*, char*);
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extern char* utfecpy(char *s1, char *es1, char *s2);
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extern char* utfrune(char*, long);
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extern int utflen(char*);
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extern int utfnlen(char*, long);
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extern int runelen(long);
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/*
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* random number
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*/
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extern int rand(void);
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extern int nrand(int);
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extern long lrand(void);
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extern long lnrand(long);
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extern int abs(int);
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/*
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* print routines
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*/
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typedef struct Fmt Fmt;
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typedef int (*Fmts)(Fmt*);
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struct Fmt{
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uchar runes; /* output buffer is runes or chars? */
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void *start; /* of buffer */
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void *to; /* current place in the buffer */
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void *stop; /* end of the buffer; overwritten if flush fails */
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int (*flush)(Fmt *); /* called when to == stop */
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void *farg; /* to make flush a closure */
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int nfmt; /* num chars formatted so far */
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va_list args; /* args passed to dofmt */
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int r; /* % format Rune */
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int width;
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int prec;
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ulong flags;
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};
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extern int print(char*, ...);
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extern char* seprint(char*, char*, char*, ...);
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extern char* vseprint(char*, char*, char*, va_list);
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extern int snprint(char*, int, char*, ...);
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extern int vsnprint(char*, int, char*, va_list);
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extern int sprint(char*, char*, ...);
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#pragma varargck argpos fmtprint 2
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#pragma varargck argpos print 1
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#pragma varargck argpos seprint 3
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#pragma varargck argpos snprint 3
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#pragma varargck argpos sprint 2
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#pragma varargck type "llb" vlong
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#pragma varargck type "lld" vlong
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#pragma varargck type "llx" vlong
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#pragma varargck type "llb" uvlong
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#pragma varargck type "lld" uvlong
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#pragma varargck type "llx" uvlong
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#pragma varargck type "lb" long
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#pragma varargck type "ld" long
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#pragma varargck type "lx" long
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#pragma varargck type "lb" ulong
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#pragma varargck type "ld" ulong
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#pragma varargck type "lx" ulong
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#pragma varargck type "zd" intptr
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#pragma varargck type "zo" intptr
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#pragma varargck type "zx" intptr
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#pragma varargck type "zb" intptr
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#pragma varargck type "zd" uintptr
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#pragma varargck type "zo" uintptr
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#pragma varargck type "zx" uintptr
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#pragma varargck type "zb" uintptr
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#pragma varargck type "b" int
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#pragma varargck type "d" int
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#pragma varargck type "x" int
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#pragma varargck type "c" int
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#pragma varargck type "C" int
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#pragma varargck type "b" uint
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#pragma varargck type "d" uint
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#pragma varargck type "x" uint
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#pragma varargck type "c" uint
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#pragma varargck type "C" uint
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#pragma varargck type "s" char*
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#pragma varargck type "q" char*
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#pragma varargck type "S" Rune*
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#pragma varargck type "%" void
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#pragma varargck type "p" uintptr
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#pragma varargck type "p" void*
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#pragma varargck flag ','
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extern int fmtstrinit(Fmt*);
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extern int fmtinstall(int, int (*)(Fmt*));
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extern void quotefmtinstall(void);
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extern int fmtprint(Fmt*, char*, ...);
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extern int fmtstrcpy(Fmt*, char*);
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extern char* fmtstrflush(Fmt*);
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/*
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* one-of-a-kind
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*/
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extern char* cleanname(char*);
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extern uintptr getcallerpc(void*);
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extern long strtol(char*, char**, int);
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extern ulong strtoul(char*, char**, int);
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extern vlong strtoll(char*, char**, int);
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extern uvlong strtoull(char*, char**, int);
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extern char etext[];
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extern char edata[];
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extern char end[];
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extern int getfields(char*, char**, int, int, char*);
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extern int tokenize(char*, char**, int);
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extern int dec64(uchar*, int, char*, int);
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extern int dec16(uchar*, int, char*, int);
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extern int encodefmt(Fmt*);
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extern void qsort(void*, long, long, int (*)(void*, void*));
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/*
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* Syscall data structures
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*/
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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 OCEXEC 32 /* or'ed in (per file descriptor), 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 create */
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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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typedef struct Qid Qid;
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typedef struct Dir Dir;
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typedef struct OWaitmsg OWaitmsg;
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typedef struct Waitmsg Waitmsg;
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#define ERRMAX 128 /* max length of error string */
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#define KNAMELEN 28 /* max length of name held in kernel */
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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 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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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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};
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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: see <u.h> */
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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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};
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struct OWaitmsg
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{
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char pid[12]; /* of loved one */
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char time[3*12]; /* of loved one and descendants */
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char msg[64]; /* compatibility BUG */
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};
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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 and descendants */
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char msg[ERRMAX]; /* actually variable-size in user mode */
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};
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