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/*
* ----------------------------------------------------------------------------
* "THE BEER-WARE LICENSE" (Revision 42):
* <phk@FreeBSD.ORG> wrote this file. As long as you retain this notice you
* can do whatever you want with this stuff. If we meet some day, and you think
* this stuff is worth it, you can buy me a beer in return. Poul-Henning Kamp
* ----------------------------------------------------------------------------
*
* $FreeBSD$
*/
#include <stdio.h>
#include <stdint.h>
#include <stdlib.h>
#include <err.h>
#include <errno.h>
#include <fcntl.h>
#include <time.h>
#include <unistd.h>
#include <sys/queue.h>
#include <sys/disk.h>
#include <sys/stat.h>
#define BIGSIZE (1024 * 1024)
#define MEDIUMSIZE (64 * 1024)
#define MINSIZE (512)
struct lump {
off_t start;
off_t len;
int state;
TAILQ_ENTRY(lump) list;
};
static TAILQ_HEAD(, lump) lumps = TAILQ_HEAD_INITIALIZER(lumps);
static void
new_lump(off_t start, off_t len, int state)
{
struct lump *lp;
lp = malloc(sizeof *lp);
if (lp == NULL)
err(1, "Malloc failed");
lp->start = start;
lp->len = len;
lp->state = state;
TAILQ_INSERT_TAIL(&lumps, lp, list);
}
int
main(int argc, const char **argv)
{
int fdr, fdw;
struct lump *lp;
off_t t, d;
size_t i, j;
int error, flags;
u_char *buf;
u_int sectorsize, minsize;
time_t t1, t2;
struct stat sb;
if (argc < 2)
errx(1, "Usage: %s source-drive [destination]", argv[0]);
buf = malloc(BIGSIZE);
if (buf == NULL)
err(1, "Cannot allocate %d bytes buffer", BIGSIZE);
fdr = open(argv[1], O_RDONLY);
if (fdr < 0)
err(1, "Cannot open read descriptor %s", argv[1]);
error = fstat(fdr, &sb);
if (error < 0)
err(1, "fstat failed");
flags = O_WRONLY;
if (S_ISBLK(sb.st_mode) || S_ISCHR(sb.st_mode)) {
error = ioctl(fdr, DIOCGSECTORSIZE, §orsize);
if (error < 0)
err(1, "DIOCGSECTORSIZE failed");
minsize = sectorsize;
error = ioctl(fdr, DIOCGMEDIASIZE, &t);
if (error < 0)
err(1, "DIOCGMEDIASIZE failed");
} else {
sectorsize = 1;
t = sb.st_size;
minsize = MINSIZE;
flags |= O_CREAT | O_TRUNC;
}
if (argc > 2) {
fdw = open(argv[2], flags, DEFFILEMODE);
if (fdw < 0)
err(1, "Cannot open write descriptor %s", argv[2]);
} else {
fdw = -1;
}
new_lump(0, t, 0);
d = 0;
t1 = 0;
for (;;) {
lp = TAILQ_FIRST(&lumps);
if (lp == NULL)
break;
TAILQ_REMOVE(&lumps, lp, list);
while (lp->len > 0) {
i = BIGSIZE;
if (lp->len < BIGSIZE)
i = lp->len;
if (lp->state == 1)
i = MEDIUMSIZE;
if (lp->state > 1)
i = minsize;
time(&t2);
if (t1 != t2 || lp->len < BIGSIZE) {
printf("\r%13jd %7zu %13jd %3d %13jd %13jd %.8f",
(intmax_t)lp->start,
i,
(intmax_t)lp->len,
lp->state,
(intmax_t)d,
(intmax_t)(t - d),
(double)d/(double)t);
t1 = t2;
}
if (i == 0) {
errx(1, "BOGUS i %10jd", (intmax_t)i);
}
fflush(stdout);
j = pread(fdr, buf, i, lp->start);
if (j == i) {
d += i;
if (fdw >= 0)
j = pwrite(fdw, buf, i, lp->start);
else
j = i;
if (j != i)
printf("\nWrite error at %jd/%zu\n",
lp->start, i);
lp->start += i;
lp->len -= i;
continue;
}
printf("\n%jd %zu failed %d\n", lp->start, i, errno);
new_lump(lp->start, i, lp->state + 1);
lp->start += i;
lp->len -= i;
}
free(lp);
}
printf("\nCompleted\n");
exit (0);
}
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