66 lines
1.3 KiB
C
66 lines
1.3 KiB
C
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#include "stdio.h"
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#ifndef NULL
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/* ANSI C */
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#include "stddef.h"
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#endif
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#ifndef SEEK_SET
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#define SEEK_SET 0
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#define SEEK_CUR 1
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#define SEEK_END 2
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#endif
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#ifdef MSDOS
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#ifndef NON_UNIX_STDIO
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#define NON_UNIX_STDIO
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#endif
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#endif
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/*units*/
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typedef struct
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{ FILE *ufd; /*0=unconnected*/
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char *ufnm;
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#ifndef MSDOS
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long uinode;
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int udev;
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#endif
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int url; /*0=sequential*/
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flag useek; /*true=can backspace, use dir, ...*/
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flag ufmt;
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flag uprnt;
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flag ublnk;
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flag uend;
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flag uwrt; /*last io was write*/
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flag uscrtch;
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} unit;
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extern int errno;
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extern flag init;
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extern cilist *elist; /*active external io list*/
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extern flag reading,external,sequential,formatted;
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extern int (*getn)(),(*putn)(); /*for formatted io*/
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extern long inode();
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extern FILE *cf; /*current file*/
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extern unit *curunit; /*current unit*/
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extern unit units[];
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extern VOID sig_die();
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#define err(f,m,s) {if(f) errno= m; else fatal(m,s); return(m);}
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/*Table sizes*/
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#define MXUNIT 100
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extern int recpos; /*position in current record*/
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extern int cursor; /* offset to move to */
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extern int hiwater; /* so TL doesn't confuse us */
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#define WRITE 1
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#define READ 2
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#define SEQ 3
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#define DIR 4
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#define FMT 5
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#define UNF 6
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#define EXT 7
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#define INT 8
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#define buf_end(x) (x->_flag & _IONBF ? x->_ptr : x->_base + BUFSIZ)
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