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