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Version 1.10.10.
[libguestfs.git]
/
daemon
/
zero.c
diff --git
a/daemon/zero.c
b/daemon/zero.c
index
43089e0
..
8fbd963
100644
(file)
--- a/
daemon/zero.c
+++ b/
daemon/zero.c
@@
-62,9
+62,10
@@
do_zero (const char *device)
int
do_zero_device (const char *device)
{
int
do_zero_device (const char *device)
{
- int64_t size = do_blockdev_getsize64 (device);
- if (size == -1)
+ int64_t s
s
ize = do_blockdev_getsize64 (device);
+ if (s
s
ize == -1)
return -1;
return -1;
+ uint64_t size = (uint64_t) ssize;
int fd = open (device, O_WRONLY);
if (fd == -1) {
int fd = open (device, O_WRONLY);
if (fd == -1) {
@@
-75,8
+76,16
@@
do_zero_device (const char *device)
char buf[1024*1024];
memset (buf, 0, sizeof buf);
char buf[1024*1024];
memset (buf, 0, sizeof buf);
- while (size > 0) {
- size_t n = (size_t) size > sizeof buf ? sizeof buf : (size_t) size;
+ uint64_t pos = 0;
+
+ while (pos < size) {
+ uint64_t n64 = size - pos;
+ size_t n;
+ if (n64 > sizeof buf)
+ n = sizeof buf;
+ else
+ n = (size_t) n64; /* safe because of if condition */
+
ssize_t r = write (fd, buf, n);
if (r == -1) {
reply_with_perror ("write: %s (with %" PRId64 " bytes left to write)",
ssize_t r = write (fd, buf, n);
if (r == -1) {
reply_with_perror ("write: %s (with %" PRId64 " bytes left to write)",
@@
-84,7
+93,9
@@
do_zero_device (const char *device)
close (fd);
return -1;
}
close (fd);
return -1;
}
- size -= r;
+
+ pos += r;
+ notify_progress (pos, size);
}
if (close (fd) == -1) {
}
if (close (fd) == -1) {