read.c,v

来自「TCP-IP红宝书源代码」· C,V 代码 · 共 46 行

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date	97.09.21.19.29.30;	author dls;	state Dist;
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@/* read.c - read */

#include <conf.h>
#include <kernel.h>
#include <io.h>

/*------------------------------------------------------------------------
 *  read  -  read one or more bytes from a device
 *------------------------------------------------------------------------
 */
read(descrp, buff, count)
int descrp, count;
char *buff;
{
	struct	devsw	*devptr;

	if (isbaddev(descrp) )
		return(SYSERR);
	devptr = &devtab[descrp];
	return(	(*devptr->dvread)(devptr,buff,count) );
}
@