src/common/preadwrite.c

#ifndef lint
static const char       RCSid[] = "$Id: preadwrite.c,v 3.1 2003/02/22 02:07:22 greg Exp $";
#endif
/*
 * Substitute routines for pread(2) and pwrite(2)
 */

#include "platform.h"


int
pread(fd, buf, siz, offs)       /* read buffer from an open file */
int     fd;
char    *buf;
unsigned int    siz;
long    offs;
{
        if (lseek(fd, (off_t)offs, SEEK_SET) != offs)
                return(-1);
        return(read(fd, buf, siz));
                                /* technically, we should reset pointer here */
}


int
pwrite(fd, buf, siz, offs)      /* write buffer to an open file */
int     fd;
char    *buf;
unsigned int    siz;
long    offs;
{
        if (lseek(fd, (off_t)offs, SEEK_SET) != offs)
                return(-1);
        return(write(fd, buf, siz));
                                /* technically, we should reset pointer here */
}
Revision:	3.2
Committed:	Mon Oct 20 16:01:55 2003 UTC (20 years, 6 months ago) by greg
Content type:	text/plain
Branch:	MAIN
CVS Tags:	rad3R6P1, rad3R6
Changes since 3.1:	+6 -6 lines
Log Message:	Included "platform.h" wherever lseek() was called
#	User	Rev	Content
1	greg	3.1	#ifndef lint
2	greg	3.2	static const char RCSid[] = "$Id: preadwrite.c,v 3.1 2003/02/22 02:07:22 greg Exp $";
3	greg	3.1	#endif
4			/*
5			* Substitute routines for pread(2) and pwrite(2)
6			*/
7
8	greg	3.2	#include "platform.h"
9	greg	3.1
10
11			int
12			pread(fd, buf, siz, offs) /* read buffer from an open file */
13			int fd;
14			char *buf;
15			unsigned int siz;
16	greg	3.2	long offs;
17	greg	3.1	{
18	greg	3.2	if (lseek(fd, (off_t)offs, SEEK_SET) != offs)
19	greg	3.1	return(-1);
20			return(read(fd, buf, siz));
21			/* technically, we should reset pointer here */
22			}
23
24
25			int
26			pwrite(fd, buf, siz, offs) /* write buffer to an open file */
27			int fd;
28			char *buf;
29			unsigned int siz;
30	greg	3.2	long offs;
31	greg	3.1	{
32	greg	3.2	if (lseek(fd, (off_t)offs, SEEK_SET) != offs)
33	greg	3.1	return(-1);
34			return(write(fd, buf, siz));
35			/* technically, we should reset pointer here */
36			}