Last change
on this file since a838f5b was 3ae31e9, checked in by Thomas Lopatic <thomas@…>, 8 years ago |
Imported original source code.
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Property mode
set to
100755
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File size:
1.1 KB
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Rev | Line | |
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[3ae31e9] | 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 "stdio.h"
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| 9 | #include "biosdefs.h"
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| 10 | #include "io.h"
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| 11 | #include "stddefs.h"
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| 12 |
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| 13 | /*
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| 14 | =============================================================================
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| 15 | fseek(fp, pos, mode) -- position file 'fp' at 'pos' in mode 'mode'.
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| 16 | =============================================================================
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| 17 | */
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| 18 |
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| 19 | fseek(fp, pos, mode)
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| 20 | register FILE *fp;
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| 21 | long pos;
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| 22 | int mode;
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| 23 | {
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| 24 | register int i, lr;
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| 25 | long curpos, lseek();
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| 26 |
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| 27 | if (fp->_flags & _DIRTY) {
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| 28 |
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| 29 | if (flush_(fp, -1))
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| 30 | return(EOF);
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| 31 |
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| 32 | } else {
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| 33 |
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| 34 | if (mode EQ 1 AND fp->_bp)
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| 35 | pos -= (long)fp->_bend - (long)fp->_bp;
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| 36 | }
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| 37 |
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| 38 | fp->_bp = fp->_bend = NULL;
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| 39 | fp->_flags &= ~_EOF;
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| 40 |
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| 41 | lr = lseek(fp->_unit, pos, mode);
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| 42 |
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| 43 | if (chantab[fp->_unit].c_arg->modefl & FC_EOF)
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| 44 | fp->_flags |= _EOF;
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| 45 |
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| 46 | if (lr < 0)
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| 47 | return(EOF);
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| 48 |
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| 49 | return(0);
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| 50 | }
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| 51 |
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