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
#	Content
1	#ifndef lint
2	static const char RCSid[] = "$Id: preadwrite.c,v 3.1 2003/02/22 02:07:22 greg Exp $";
3	#endif
4	/*
5	* Substitute routines for pread(2) and pwrite(2)
6	*/
7
8	#include "platform.h"
9
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	long offs;
17	{
18	if (lseek(fd, (off_t)offs, SEEK_SET) != offs)
19	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	long offs;
31	{
32	if (lseek(fd, (off_t)offs, SEEK_SET) != offs)
33	return(-1);
34	return(write(fd, buf, siz));
35	/* technically, we should reset pointer here */
36	}