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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[f40a309] | 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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[b28a12e] | 8 | #include "ram.h"
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[e225e77] | 9 |
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[f40a309] | 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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[7258c6a] | 16 | int16_t fseek(FILE *fp, int32_t pos, int16_t mode)
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[f40a309] | 17 | {
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[8973acd] | 18 | register int32_t lr;
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[f40a309] | 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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[7258c6a] | 28 | pos -= (int32_t)fp->_bend - (int32_t)fp->_bp;
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[f40a309] | 29 | }
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| 30 |
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| 31 | fp->_bp = fp->_bend = NULL;
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[8973acd] | 32 | fp->_flags = (uint8_t)(fp->_flags & ~_EOF);
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[f40a309] | 33 |
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| 34 | lr = lseek(fp->_unit, pos, mode);
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| 35 |
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[df097bf] | 36 | if (((struct fcb *)chantab[fp->_unit].c_arg)->modefl & FC_EOF)
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[f40a309] | 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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[6262b5c] | 45 |
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