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Annotation of coherent/d/lib/libc/stdio/_fpseek.c, revision 1.1.1.1

1.1       root        1: /*
                      2:  * Standard I/O Library Internals
                      3:  * Align file seek addr with current pointer in buffer
                      4:  * by writing out unflushed data or seeking back over unread data
                      5:  * ungot char is discarded
                      6:  */
                      7: 
                      8: #include <stdio.h>
                      9: 
                     10: int
                     11: _fpseek(fp)
                     12: register FILE  *fp;
                     13: {
                     14:        extern  long    lseek();
                     15: 
                     16:        if (fp->_ff&_FUNGOT)
                     17:                (*fp->_gt)(fp);
                     18:        if (fp->_dp <= fp->_cp)
                     19:                return (fflush(fp));
                     20:        if (lseek(fileno(fp), (long)(fp->_cp-fp->_dp), SEEK_CUR) == -1L)
                     21:                return (EOF);
                     22:        fp->_dp = fp->_cp;
                     23:        fp->_cc = 0;
                     24:        return (0);
                     25: }

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