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87 lines
3.1 KiB
C
87 lines
3.1 KiB
C
/****************************************************************************
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*
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* C F I L E C R E A T E R O U T I N E
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* -----------------------------------------
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* Copyright 1982 by Digital Research Inc. All rights reserved.
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*
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* The "creat" routine opens a new "C" file and returns a file id.
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* Comes in 3 flavors: ascii (CP/M text files), binary, and default
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* (currently ascii).
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*
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* Calling Sequence:
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* fid = creat(fname,prot)
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* fid = creata(fname,prot)
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* fid = creatb(fname,prot)
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* fid = _creat(fname,prot,type);
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*
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* Where:
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*
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* fname is the address of a null terminated file name.
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* prot is the UNIX file protection
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* type is 0 for ASCII, 1 for BINARY
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*
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*****************************************************************************/
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#include "portab.h" /* Include std definitions */
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#include "osif.h" /* Include CP/M definitions */
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#include "osiferr.h"
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#include "errno.h" /* Error codes */
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EXTERN BYTE __tname[]; /* Terminal name */
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EXTERN BYTE __lname[]; /* List device name */
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/****************************/
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WORD _creat (fname,prot,type) /****************************/
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BYTE *fname; /* -> File name */
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WORD prot; /* Open mode */
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WORD type; /* ASCII/BINARY flag */
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{ /****************************/
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REG WORD ich; /* Channel number for open */
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WORD _allocc(); /* gets a channel */
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REG FD *ch; /* -> CCB for channel */
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/* */
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if((ich = _allocc()) == FAILURE) /* Allocate a channel */
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return (FAILURE); /* Can't (EMFILE) */
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/* */
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__chinit(ich); /* Clear out channel's ccb */
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ch = _getccb(ich); /* Get address of ccb */
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/* */
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if(type==0) /* ASCII file? */
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ch -> flags |= ISASCII; /* Yes, mark it. */
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/****************************/
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if(_strcmp(fname,__tname) == 0) /* Terminal file? */
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{ /* */
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ch -> flags |= ISTTY|OPENED; /* Set flag */
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return(ich); /* Return file descriptor */
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} /****************************/
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else if(_strcmp(fname,__lname) == 0) /* List device? */
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{ /* */
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ch -> flags |= ISLPT|OPENED; /* set flag */
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return(ich); /* */
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} /* */
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/****************************/
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if(__open(ich,fname,CREATE) != 0) /* Use BDOS interface */
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RETERR(FAILURE,ENODSPC); /* Oops, No dir space. */
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/* Else: */
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ch -> flags |= OPENED; /* Set OPEN bit */
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return(ich); /* Return Channel # */
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} /****************************/
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WORD creat(fname,prot) /* CLEAR FUNCTION ***********/
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BYTE *fname; WORD prot;
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{ return(_creat(fname,prot,0)); } /* default to ascii */
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WORD creata(fname,prot) /* CLEAR FUNCTION ***********/
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BYTE *fname; WORD prot;
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{ return(_creat(fname,prot,0)); } /* ascii file open */
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WORD creatb(fname,prot) /* CLEAR FUNCTION ***********/
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BYTE *fname; WORD prot;
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{ return(_creat(fname,prot,1)); } /* binary file open */
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*****/
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BYTE *fname; WORD prot;
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{ return(_creat(fname,prot,1)); } /* binary file open */
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*****/
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BYTE *fname; WORD prot;
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{ return(_creat(fname,prot,1)); } /* binary file open */
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