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Rev 4874 Rev 4921
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#include
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#include
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#include
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#include
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#include
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#include
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#include <_syslist.h>
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#include
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#include
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#include
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#include
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#include
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#include <_syslist.h>
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/* Some targets provides their own versions of this functions.  Those
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/* Some targets provides their own versions of this functions.  Those
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#endif
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#endif
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#ifndef REENTRANT_SYSCALLS_PROVIDED
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#ifndef REENTRANT_SYSCALLS_PROVIDED
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/* We use the errno variable used by the system dependent layer.  */
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#undef errno
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/* We use the errno variable used by the system dependent layer.  */
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extern int errno;
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	This is a reentrant version of <>.  It
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	This is a reentrant version of <>.  It
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	takes a pointer to the global data block, which holds
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	takes a pointer to the global data block, which holds
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	<>.
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	<>.
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*/
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*/
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#define NULL_HANDLE  (int)-1
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#define DUMMY_HANDLE (int)-2
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#define _READ   0x0001  /* file opened for reading */
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#define _WRITE  0x0002  /* file opened for writing */
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#define _UNGET  0x0004  /* ungetc has been done */
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#define _BIGBUF 0x0008  /* big buffer allocated */
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#define _EOF    0x0010  /* EOF has occurred */
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#define _SFERR  0x0020  /* error has occurred on this file */
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#define _APPEND 0x0080  /* file opened for append */
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#define _BINARY 0x0040  /* file is binary, skip CRLF processing */
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#define _TMPFIL 0x0800  /* this is a temporary file */
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#define _DIRTY  0x1000  /* buffer has been modified */
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#define _ISTTY  0x2000  /* is console device */
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#define _DYNAMIC 0x4000 /* FILE is dynamically allocated   */
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#define _FILEEXT 0x8000 /* lseek with positive offset has been done */
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#define _COMMIT 0x0001  /* extended flag: commit OS buffers on flush */
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extern int       _fmode;
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static inline void debug_out(const char val)
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{
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    __asm__ __volatile__(
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    "int $0x40 \n\t"
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    ::"a"(63), "b"(1),"c"(val));
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}
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int   debugwrite(const char *path, const void *buff,
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                 size_t offset, size_t count, size_t *writes)
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{
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    int ret = count;
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    const char *p = buff;
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    while (count--)
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    {
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        debug_out(*p++);
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    };
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    *writes = ret;
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    return ret;
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};
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static int __openFileHandle(const char *path, int mode, int *err)
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{
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    fileinfo_t     info;
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    __file_handle *handle;
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//    path = getfullpath(name);
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    *err = get_fileinfo(path, &info);
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    if( mode & O_EXCL && mode & O_CREAT )
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    {
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        if( ! *err)
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        {
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            *err = EEXIST;
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            return -1;
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        };
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    }
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    if( *err)
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    {
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        if(mode & O_CREAT)
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            *err=create_file(path);
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        if( *err)
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        {
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            return -1;
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        };
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    };
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    if( mode & O_TRUNC )
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        set_file_size(path, 0);
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    if ( !(handle=(__file_handle*)malloc(sizeof( __file_handle) )))
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    {
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        *err = ENOMEM;
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        return -1;
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    };
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    handle->name   = strdup(path);
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    handle->offset = 0;
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    handle->write  = write_file;
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    *err = 0;
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    return (int)handle;
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};
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int
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int
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_DEFUN (_open_r, (ptr, file, flags, dmode),
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_DEFUN (_open_r, (ptr, file, flags, mode),
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     struct _reent *ptr _AND
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     struct _reent *ptr _AND
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     _CONST char *file _AND
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     _CONST char *file _AND
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     int flags _AND
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     int flags _AND
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     int dmode)
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{
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    int         hid;
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    int         handle;
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    int         err = 0;
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    unsigned    iomode_flags;
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    int         rwmode;
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/*
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    if (flags & ~(O_RDONLY | O_WRONLY | O_RDWR | O_CREAT | O_APPEND | O_TRUNC))
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    {
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        ptr->_errno = ENOSYS;
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        return -1;
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    }
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*/
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    // First try to get the required slot.
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    // No point in creating a file only to not use it.  JBS 99/10/26
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    hid = __allocPOSIXHandle( DUMMY_HANDLE );
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    if( hid == -1 )
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    {
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        ptr->_errno = EMFILE;
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        return( -1 );
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    }
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    handle = __openFileHandle( file, flags, &err);
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    if( handle == -1 )
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    {
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        __freePOSIXHandle( hid );
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        ptr->_errno = err;
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        return( -1 );
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    }
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    __setOSHandle( hid, handle );   // JBS 99/11/01
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    rwmode = flags & ( O_RDONLY | O_WRONLY | O_RDWR | O_NOINHERIT );
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    iomode_flags = 0;
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    if( rwmode == O_RDWR )       iomode_flags |= _READ | _WRITE;
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    else if( rwmode == O_RDONLY) iomode_flags |= _READ;
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    else if( rwmode == O_WRONLY) iomode_flags |= _WRITE;
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    if( flags & O_APPEND )        iomode_flags |= _APPEND;
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    if( flags & (O_BINARY|O_TEXT) ) {
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        if( flags & O_BINARY )    iomode_flags |= _BINARY;
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    } else {
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        if( _fmode == O_BINARY ) iomode_flags |= _BINARY;
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    }
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    __SetIOMode( hid, iomode_flags );
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200 
    ptr->_errno = 0;
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    return (hid);
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203 
}
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204 
 
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205 
int
 - 
 
206 
_DEFUN (open, (file, flags, ...),
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        const char *file _AND
 - 
 
208 
        int flags _DOTS)
 54 
     int mode)
209 
{
 - 
 
210 
  va_list ap;
 55 
{
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211 
  int ret;
 56 
  int ret;
212 
 
 57 
 
213 
  va_start (ap, flags);
 58 
  errno = 0;
214 
  ret = _open_r (_REENT, file, flags, va_arg (ap, int));
 59 
  if ((ret = _open (file, flags, mode)) == -1 && errno != 0)
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  va_end (ap);
 60 
    ptr->_errno = errno;
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  return ret;
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}
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  return ret;