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Sweden-Number/library/port.c

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/*
* Misc. functions for systems that don't have them
*
* Copyright 1996 Alexandre Julliard
*/
#include "config.h"
#include "wine/port.h"
#ifdef __BEOS__
#include <be/kernel/fs_info.h>
#include <be/kernel/OS.h>
#endif
#include <assert.h>
#include <ctype.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <sys/types.h>
#include <sys/time.h>
#include <sys/stat.h>
#include <sys/ioctl.h>
#include <errno.h>
#include <fcntl.h>
#include <termios.h>
#ifdef HAVE_SYS_MMAN_H
#include <sys/mman.h>
#endif
#ifdef HAVE_LIBIO_H
# include <libio.h>
#endif
#ifdef HAVE_SYSCALL_H
# include <syscall.h>
#endif
#ifdef HAVE_PTY_H
# include <pty.h>
#endif
#ifdef HAVE_LIBUTIL_H
# include <libutil.h>
#endif
/***********************************************************************
* usleep
*/
#ifndef HAVE_USLEEP
unsigned int usleep (unsigned int useconds)
{
#if defined(__EMX__)
DosSleep(useconds);
return 0;
#elif defined(__BEOS__)
return snooze(useconds);
#elif defined(HAVE_SELECT)
struct timeval delay;
delay.tv_sec = useconds / 1000000;
delay.tv_usec = useconds % 1000000;
select( 0, 0, 0, 0, &delay );
return 0;
#else /* defined(__EMX__) || defined(__BEOS__) || defined(HAVE_SELECT) */
errno = ENOSYS;
return -1;
#endif /* defined(__EMX__) || defined(__BEOS__) || defined(HAVE_SELECT) */
}
#endif /* HAVE_USLEEP */
/***********************************************************************
* memmove
*/
#ifndef HAVE_MEMMOVE
void *memmove( void *dest, const void *src, unsigned int len )
{
register char *dst = dest;
/* Use memcpy if not overlapping */
if ((dst + len <= (char *)src) || ((char *)src + len <= dst))
{
memcpy( dst, src, len );
}
/* Otherwise do it the hard way (FIXME: could do better than this) */
else if (dst < src)
{
while (len--) *dst++ = *((char *)src)++;
}
else
{
dst += len - 1;
src = (char *)src + len - 1;
while (len--) *dst-- = *((char *)src)--;
}
return dest;
}
#endif /* HAVE_MEMMOVE */
/***********************************************************************
* strerror
*/
#ifndef HAVE_STRERROR
const char *strerror( int err )
{
/* Let's hope we have sys_errlist then */
return sys_errlist[err];
}
#endif /* HAVE_STRERROR */
/***********************************************************************
* getpagesize
*/
#ifndef HAVE_GETPAGESIZE
size_t getpagesize(void)
{
# ifdef __svr4__
return sysconf(_SC_PAGESIZE);
# else
# error Cannot get the page size on this platform
# endif
}
#endif /* HAVE_GETPAGESIZE */
/***********************************************************************
* clone
*/
#if !defined(HAVE_CLONE) && defined(__linux__)
int clone( int (*fn)(void *), void *stack, int flags, void *arg )
{
#ifdef __i386__
int ret;
void **stack_ptr = (void **)stack;
*--stack_ptr = arg; /* Push argument on stack */
*--stack_ptr = fn; /* Push function pointer (popped into ebx) */
__asm__ __volatile__( "pushl %%ebx\n\t"
"movl %2,%%ebx\n\t"
"int $0x80\n\t"
"popl %%ebx\n\t" /* Contains fn in the child */
"testl %%eax,%%eax\n\t"
"jnz 0f\n\t"
"xorl %ebp,%ebp\n\t" /* Terminate the stack frames */
"call *%%ebx\n\t" /* Should never return */
"xorl %%eax,%%eax\n\t" /* Just in case it does*/
"0:"
: "=a" (ret)
: "0" (SYS_clone), "r" (flags), "c" (stack_ptr) );
assert( ret ); /* If ret is 0, we returned from the child function */
if (ret > 0) return ret;
errno = -ret;
return -1;
#else
errno = EINVAL;
return -1;
#endif /* __i386__ */
}
#endif /* !HAVE_CLONE && __linux__ */
/***********************************************************************
* strcasecmp
*/
#ifndef HAVE_STRCASECMP
int strcasecmp( const char *str1, const char *str2 )
{
const unsigned char *ustr1 = (const unsigned char *)str1;
const unsigned char *ustr2 = (const unsigned char *)str2;
while (*ustr1 && toupper(*ustr1) == toupper(*ustr2)) {
ustr1++;
ustr2++;
}
return toupper(*ustr1) - toupper(*ustr2);
}
#endif /* HAVE_STRCASECMP */
/***********************************************************************
* strncasecmp
*/
#ifndef HAVE_STRNCASECMP
int strncasecmp( const char *str1, const char *str2, size_t n )
{
const unsigned char *ustr1 = (const unsigned char *)str1;
const unsigned char *ustr2 = (const unsigned char *)str2;
int res;
if (!n) return 0;
while ((--n > 0) && *ustr1) {
if ((res = toupper(*ustr1) - toupper(*ustr2))) return res;
ustr1++;
ustr2++;
}
return toupper(*ustr1) - toupper(*ustr2);
}
#endif /* HAVE_STRNCASECMP */
/***********************************************************************
* wine_openpty
* NOTE
* It looks like the openpty that comes with glibc in RedHat 5.0
* is buggy (second call returns what looks like a dup of 0 and 1
* instead of a new pty), this is a generic replacement.
*
* FIXME
* We should have a autoconf check for this.
*/
int wine_openpty(int *master, int *slave, char *name,
struct termios *term, struct winsize *winsize)
{
#ifdef HAVE_OPENPTY
return openpty(master, slave, name, term, winsize);
#else
const char *ptr1, *ptr2;
char pts_name[512];
strcpy (pts_name, "/dev/ptyXY");
for (ptr1 = "pqrstuvwxyzPQRST"; *ptr1 != 0; ptr1++) {
pts_name[8] = *ptr1;
for (ptr2 = "0123456789abcdef"; *ptr2 != 0; ptr2++) {
pts_name[9] = *ptr2;
if ((*master = open(pts_name, O_RDWR)) < 0) {
if (errno == ENOENT)
return -1;
else
continue;
}
pts_name[5] = 't';
if ((*slave = open(pts_name, O_RDWR)) < 0) {
pts_name[5] = 'p';
close (*master);
continue;
}
if (term != NULL)
tcsetattr(*slave, TCSANOW, term);
if (winsize != NULL)
ioctl(*slave, TIOCSWINSZ, winsize);
if (name != NULL)
strcpy(name, pts_name);
return *slave;
}
}
errno = EMFILE;
return -1;
#endif
}
/***********************************************************************
* getnetbyaddr
*/
#ifndef HAVE_GETNETBYADDR
struct netent *getnetbyaddr(unsigned long net, int type)
{
errno = ENOSYS;
return NULL;
}
#endif /* defined(HAVE_GETNETBYNAME) */
/***********************************************************************
* getnetbyname
*/
#ifndef HAVE_GETNETBYNAME
struct netent *getnetbyname(const char *name)
{
errno = ENOSYS;
return NULL;
}
#endif /* defined(HAVE_GETNETBYNAME) */
/***********************************************************************
* getprotobyname
*/
#ifndef HAVE_GETPROTOBYNAME
struct protoent *getprotobyname(const char *name)
{
errno = ENOSYS;
return NULL;
}
#endif /* !defined(HAVE_GETPROTOBYNAME) */
/***********************************************************************
* getprotobynumber
*/
#ifndef HAVE_GETPROTOBYNUMBER
struct protoent *getprotobynumber(int proto)
{
errno = ENOSYS;
return NULL;
}
#endif /* !defined(HAVE_GETPROTOBYNUMBER) */
/***********************************************************************
* getservbyport
*/
#ifndef HAVE_GETSERVBYPORT
struct servent *getservbyport(int port, const char *proto)
{
errno = ENOSYS;
return NULL;
}
#endif /* !defined(HAVE_GETSERVBYPORT) */
/***********************************************************************
* getsockopt
*/
#ifndef HAVE_GETSOCKOPT
int getsockopt(int socket, int level, int option_name,
void *option_value, size_t *option_len)
{
errno = ENOSYS;
return -1;
}
#endif /* !defined(HAVE_GETSOCKOPT) */
/***********************************************************************
* inet_network
*/
#ifndef HAVE_INET_NETWORK
unsigned long inet_network(const char *cp)
{
errno = ENOSYS;
return 0;
}
#endif /* defined(HAVE_INET_NETWORK) */
/***********************************************************************
* settimeofday
*/
#ifndef HAVE_SETTIMEOFDAY
int settimeofday(struct timeval *tp, void *reserved)
{
tp->tv_sec = 0;
tp->tv_usec = 0;
errno = ENOSYS;
return -1;
}
#endif /* HAVE_SETTIMEOFDAY */
/***********************************************************************
* statfs
*/
#ifndef HAVE_STATFS
int statfs(const char *name, struct statfs *info)
{
#ifdef __BEOS__
dev_t mydev;
fs_info fsinfo;
if(!info) {
errno = ENOSYS;
return -1;
}
if ((mydev = dev_for_path(name)) < 0) {
errno = ENOSYS;
return -1;
}
if (fs_stat_dev(mydev,&fsinfo) < 0) {
errno = ENOSYS;
return -1;
}
info->f_bsize = fsinfo.block_size;
info->f_blocks = fsinfo.total_blocks;
info->f_bfree = fsinfo.free_blocks;
return 0;
#else /* defined(__BEOS__) */
errno = ENOSYS;
return -1;
#endif /* defined(__BEOS__) */
}
#endif /* !defined(HAVE_STATFS) */
/***********************************************************************
* lstat
*/
#ifndef HAVE_LSTAT
int lstat(const char *file_name, struct stat *buf)
{
return stat( file_name, buf );
}
#endif /* HAVE_LSTAT */
/***********************************************************************
* getrlimit
*/
#ifndef HAVE_GETRLIMIT
int getrlimit (int resource, struct rlimit *rlim)
{
return -1; /* FAIL */
}
#endif /* HAVE_GETRLIMIT */
/***********************************************************************
* wine_anon_mmap
*
* Portable wrapper for anonymous mmaps
*/
void *wine_anon_mmap( void *start, size_t size, int prot, int flags )
{
static int fdzero = -1;
#ifdef MAP_ANON
flags |= MAP_ANON;
#else
if (fdzero == -1)
{
if ((fdzero = open( "/dev/zero", O_RDONLY )) == -1)
{
perror( "/dev/zero: open" );
exit(1);
}
}
#endif /* MAP_ANON */
#ifdef MAP_SHARED
flags &= ~MAP_SHARED;
#endif
/* Linux EINVAL's on us if we don't pass MAP_PRIVATE to an anon mmap */
#ifdef MAP_PRIVATE
flags |= MAP_PRIVATE;
#endif
return mmap( start, size, prot, flags, fdzero, 0 );
}
/*
* These functions provide wrappers around dlopen() and associated
* functions. They work around a bug in glibc 2.1.x where calling
* a dl*() function after a previous dl*() function has failed
* without a dlerror() call between the two will cause a crash.
* They all take a pointer to a buffer that
* will receive the error description (from dlerror()). This
* parameter may be NULL if the error description is not required.
*/
/***********************************************************************
* wine_dlopen
*/
void *wine_dlopen( const char *filename, int flag, char *error, int errorsize )
{
#ifdef HAVE_DLOPEN
void *ret;
char *s;
dlerror(); dlerror();
ret = dlopen( filename, flag );
s = dlerror();
if (error)
{
strncpy( error, s ? s : "", errorsize );
error[errorsize - 1] = '\0';
}
dlerror();
return ret;
#else
if (error)
{
strncpy( error, "dlopen interface not detected by configure", errorsize );
error[errorsize - 1] = '\0';
}
return NULL;
#endif
}
/***********************************************************************
* wine_dlsym
*/
void *wine_dlsym( void *handle, const char *symbol, char *error, int errorsize )
{
#ifdef HAVE_DLOPEN
void *ret;
char *s;
dlerror(); dlerror();
ret = dlsym( handle, symbol );
s = dlerror();
if (error)
{
strncpy( error, s ? s : "", errorsize );
error[errorsize - 1] = '\0';
}
dlerror();
return ret;
#else
if (error)
{
strncpy( error, "dlopen interface not detected by configure", errorsize );
error[errorsize - 1] = '\0';
}
return NULL;
#endif
}
/***********************************************************************
* wine_dlclose
*/
int wine_dlclose( void *handle, char *error, int errorsize )
{
#ifdef HAVE_DLOPEN
int ret;
char *s;
dlerror(); dlerror();
ret = dlclose( handle );
s = dlerror();
if (error)
{
strncpy( error, s ? s : "", errorsize );
error[errorsize - 1] = '\0';
}
dlerror();
return ret;
#else
if (error)
{
strncpy( error, "dlopen interface not detected by configure", errorsize );
error[errorsize - 1] = '\0';
}
return 1;
#endif
}
/***********************************************************************
* wine_rewrite_s4tos2
*
* Convert 4 byte Unicode strings to 2 byte Unicode strings in-place.
* This is only practical if literal strings are writable.
*/
unsigned short* wine_rewrite_s4tos2(const wchar_t* str4 )
{
unsigned short *str2,*s2;
if (str4==NULL)
return NULL;
if ((*str4 & 0xffff0000) != 0) {
/* This string has already been converted. Return it as is */
return (unsigned short*)str4;
}
/* Note that we can also end up here if the string has a single
* character. In such a case we will convert the string over and
* over again. But this is harmless.
*/
str2=s2=(unsigned short*)str4;
do {
*s2=(unsigned short)*str4;
s2++;
} while (*str4++ != L'\0');
return str2;
}
#ifndef HAVE_ECVT
/*
* NetBSD 1.5 doesn't have ecvt, fcvt, gcvt. We just check for ecvt, though.
* Fix/verify these implementations !
*/
/***********************************************************************
* ecvt
*/
char *ecvt (double number, int ndigits, int *decpt, int *sign)
{
static buf[40]; /* ought to be enough */
char *dec;
sprintf(buf, "%.*e", ndigits /* FIXME wrong */, number);
*sign = (number < 0);
dec = strchr(buf, '.');
*decpt = (dec) ? (int)dec - (int)buf : -1;
return buf;
}
/***********************************************************************
* fcvt
*/
char *fcvt (double number, int ndigits, int *decpt, int *sign)
{
static buf[40]; /* ought to be enough */
char *dec;
sprintf(buf, "%.*e", ndigits, number);
*sign = (number < 0);
dec = strchr(buf, '.');
*decpt = (dec) ? (int)dec - (int)buf : -1;
return buf;
}
/***********************************************************************
* gcvt
*
* FIXME: uses both E and F.
*/
char *gcvt (double number, size_t ndigit, char *buff)
{
sprintf(buff, "%.*E", ndigit, number);
return buff;
}
#endif /* HAVE_ECVT */
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