Last change
on this file since c59409e was 8973acd, checked in by Thomas Lopatic <thomas@…>, 7 years ago |
No more warnings in libcio.
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-
Property mode
set to
100644
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File size:
993 bytes
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1 | /*
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2 | =============================================================================
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3 | fseek.c -- perform a seek on a stream file
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4 | Version 4 -- 1987-10-28 -- D.N. Lynx Crowe
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5 | =============================================================================
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6 | */
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7 |
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8 | #include "ram.h"
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9 |
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10 | /*
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11 | =============================================================================
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12 | fseek(fp, pos, mode) -- position file 'fp' at 'pos' in mode 'mode'.
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13 | =============================================================================
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14 | */
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15 |
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16 | int16_t fseek(FILE *fp, int32_t pos, int16_t mode)
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17 | {
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18 | register int32_t lr;
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19 |
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20 | if (fp->_flags & _DIRTY) {
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21 |
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22 | if (flush_(fp, -1))
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23 | return(EOF);
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24 |
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25 | } else {
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26 |
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27 | if (mode EQ 1 AND fp->_bp)
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28 | pos -= (int32_t)fp->_bend - (int32_t)fp->_bp;
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29 | }
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30 |
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31 | fp->_bp = fp->_bend = NULL;
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32 | fp->_flags = (uint8_t)(fp->_flags & ~_EOF);
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33 |
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34 | lr = lseek(fp->_unit, pos, mode);
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35 |
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36 | if (((struct fcb *)chantab[fp->_unit].c_arg)->modefl & FC_EOF)
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37 | fp->_flags |= _EOF;
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38 |
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39 | if (lr < 0)
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40 | return(EOF);
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41 |
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42 | return(0);
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43 | }
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44 |
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45 |
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