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Support larger files (at least 64-bit offsets) by using off_t instead of

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int to store offsets.
This commit is contained in:
Tim J. Robbins 2002-07-15 05:31:55 +00:00
parent 937033e904
commit c81180b861
1 changed files with 21 additions and 8 deletions
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29
usr.bin/split/split.c
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@ -48,7 +48,11 @@ static const char sccsid[] = "@(#)split.c 8.2 (Berkeley) 4/16/94";
#include <ctype.h>
#include <err.h>
#include <errno.h>
#include <fcntl.h>
#include <inttypes.h>
#include <limits.h>
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
@ -58,7 +62,7 @@ static const char sccsid[] = "@(#)split.c 8.2 (Berkeley) 4/16/94";
#define DEFLINE 1000 /* Default num lines per file. */
int bytecnt; /* Byte count to split on. */
off_t bytecnt; /* Byte count to split on. */
long numlines; /* Line count to split on. */
int file_open; /* If a file open. */
int ifd = -1, ofd = -1; /* Input/output file descriptors. */
@ -76,6 +80,8 @@ static void usage(void);
int
main(int argc, char **argv)
{
intmax_t bytecnti;
long scale;
int ch;
char *ep, *p;
@ -110,14 +116,21 @@ main(int argc, char **argv)
"%s: illegal suffix length", optarg);
break;
case 'b': /* Byte count. */
if ((bytecnt = strtoq(optarg, &ep, 10)) <= 0 ||
(*ep != '\0' && *ep != 'k' && *ep != 'm'))
errno = 0;
if ((bytecnti = strtoimax(optarg, &ep, 10)) <= 0 ||
(*ep != '\0' && *ep != 'k' && *ep != 'm') ||
errno != 0)
errx(EX_USAGE,
"%s: illegal byte count", optarg);
if (*ep == 'k')
bytecnt *= 1024;
scale = 1024;
else if (*ep == 'm')
bytecnt *= 1048576;
scale = 1024 * 1024;
else
scale = 1;
if (bytecnti > OFF_MAX / scale)
errx(EX_USAGE, "%s: offset too large", optarg);
bytecnt = (off_t)(bytecnti * scale);
break;
case 'p' : /* pattern matching. */
if (regcomp(&rgx, optarg, REG_EXTENDED|REG_NOSUB) != 0)
@ -181,9 +194,9 @@ main(int argc, char **argv)
void
split1(void)
{
size_t bcnt;
off_t bcnt;
char *C;
int dist, len;
ssize_t dist, len;
for (bcnt = 0;;)
switch ((len = read(ifd, bfr, MAXBSIZE))) {
@ -195,7 +208,7 @@ split1(void)
default:
if (!file_open)
newfile();
if (bcnt + len >= (u_int)bytecnt) {
if (bcnt + len >= bytecnt) {
dist = bytecnt - bcnt;
if (write(ofd, bfr, dist) != dist)
err(EX_IOERR, "write");