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865
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1 #define BUFSIZ 256
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2 #define _NFILE 16
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3 typedef struct _iobuf {
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4 char *_ptr, /* buffer pointer */
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5 *_base, /* buffer base address */
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6 *_end; /* buffer end address */
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7 int _flag; /* file status */
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8 int _fd; /* file path number */
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9 char _save; /* for 'ungetc' when unbuffered */
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10 int _bufsiz; /* size of data buffer */
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11 } FILE;
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12
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13 extern FILE _iob[_NFILE];
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14
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15 #define _READ 1
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16 #define _WRITE 2
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17 #define _UNBUF 4
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18 #define _BIGBUF 8
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19 #define _EOF 0x10
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20 #define _ERR 0x20
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21 #define _SCF 0x40
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22 #define _RBF 0x80
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23 #define _DEVMASK 0xc0
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24 #define _WRITTEN 0x0100 /* buffer written in update mode */
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25 #define _INIT 0x8000 /* _iob initialized */
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26
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27 #define EOF (-1)
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28 #define EOL 13
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29 #define NULL 0
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30
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31 #define stdin _iob
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32 #define stdout (&_iob[1])
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33 #define stderr (&_iob[2])
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34
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35 #define PMODE 0xb /* r/w for owner, r for others */
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36
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37 #define fgetc getc
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38 #define putchar(c) putc(c,stdout)
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39 #define getchar() getc(stdin)
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40 #define ferror(p) ((p)->_flag&_ERR)
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41 #define feof(p) ((p)->_flag&_EOF)
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42 #define clearerr(p) ((p)->_flag&=~_ERR)
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43 #define fileno(p) ((p)->_fd)
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44
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45 long ftell();
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