ref: 1dbb193077af7ba6ff7fb70a4dd465480764382e
dir: /os/port/lib.h/
/*
* functions (possibly) linked in, complete, from libc.
*/
#define nelem(x) (sizeof(x)/sizeof((x)[0]))
#define offsetof(s, m) (ulong)(&(((s*)0)->m))
#define assert(x) if(x){}else _assert("x")
/*
* mem routines
*/
extern void* memccpy(void*, void*, int, ulong);
extern void* memset(void*, int, ulong);
extern int memcmp(void*, void*, ulong);
extern void* memmove(void*, void*, ulong);
extern void* memchr(void*, int, ulong);
/*
* string routines
*/
extern char* strcat(char*, char*);
extern char* strchr(char*, int);
extern char* strrchr(char*, int);
extern int strcmp(char*, char*);
extern char* strcpy(char*, char*);
extern char* strecpy(char*, char*, char*);
extern char* strncat(char*, char*, long);
extern char* strncpy(char*, char*, long);
extern int strncmp(char*, char*, long);
extern long strlen(char*);
extern char* strdup(char*);
extern char* strstr(char*, char*);
extern int cistrncmp(char*, char*, int);
extern int cistrcmp(char*, char*);
extern char* cistrstr(char*, char*);
extern int atoi(char*);
extern int fullrune(char*, int);
enum
{
UTFmax = 4, /* 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 */
Runemax = 0x10FFFF, /* 21-bit rune */
Runemask = 0x1FFFFF, /* bits used by runes (see grep) */
};
/*
* rune routines
*/
extern int runetochar(char*, Rune*);
extern int chartorune(Rune*, char*);
extern char* utfrune(char*, long);
extern int utflen(char*);
extern int runelen(long);
extern int abs(int);
/*
* print routines
*/
typedef struct Fmt Fmt;
typedef int (*Fmts)(Fmt*);
struct Fmt{
uchar 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;
ulong flags;
};
extern int print(char*, ...);
extern char* seprint(char*, char*, char*, ...);
extern char* vseprint(char*, char*, char*, va_list);
extern char* smprint(char*, ...);
extern char* vsmprint(char*, va_list);
extern int snprint(char*, int, char*, ...);
extern int vsnprint(char*, int, char*, va_list);
extern int sprint(char*, char*, ...);
extern int fmtinstall(int, int (*)(Fmt*));
extern void quotefmtinstall(void);
extern int fmtprint(Fmt*, char*, ...);
extern int fmtstrcpy(Fmt*, 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 argpos vseprint 3
#pragma varargck argpos vsnprint 3
extern int fltconv(Fmt*);
/*
* math
*/
extern int isNaN(double);
extern int isInf(double, int);
extern double floor(double);
extern double frexp(double, int*);
extern double pow10(int);
/*
* one-of-a-kind
*/
extern char* cleanname(char*);
extern ulong getcallerpc(void*);
extern long strtol(char*, char**, int);
extern ulong strtoul(char*, char**, int);
extern vlong strtoll(char*, char**, int);
extern uvlong strtoull(char*, char**, int);
extern char etext[];
extern char edata[];
extern char end[];
extern int getfields(char*, char**, int, int, char*);
extern int tokenize(char*, char**, int);
extern int dec64(uchar*, int, char*, int);
extern void qsort(void*, long, long, int (*)(void*, void*));
extern int toupper(int);
extern char* netmkaddr(char*, char*, char*);
extern int myetheraddr(uchar*, char*);
extern int parseether(uchar*, char*);
/*
* network dialling
*/
#define NETPATHLEN 40
/*
* 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 Waitmsg Waitmsg;
#define STATMAX 65535U /* max length of machine-independent stat structure */
#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
{
uvlong path;
ulong vers;
uchar type;
};
struct Dir {
/* system-modified data */
ushort type; /* server type */
uint dev; /* server subtype */
/* file data */
Qid qid; /* unique id from server */
ulong mode; /* permissions */
ulong atime; /* last read time */
ulong mtime; /* last write time */
vlong 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 Waitmsg
{
int pid; /* of loved one */
ulong time[3]; /* of loved one and descendants */
char msg[ERRMAX]; /* actually variable-size in user mode */
};