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tools: hv: report ENOSPC errors in hv_fcopy_daemon

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Currently some "Unspecified error 0x80004005" is reported on the Windows
side if something fails. Handle the ENOSPC case and return
ERROR_DISK_FULL, which allows at least Copy-VMFile to report a meaning
full error.

Signed-off-by: Olaf Hering <olaf@aepfle.de>
Signed-off-by: K. Y. Srinivasan <kys@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Olaf Hering 2015-12-14 16:01:34 -08:00 committed by Greg Kroah-Hartman
parent 3cace4a616
commit b4ed5d1682
2 changed files with 18 additions and 3 deletions
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1
include/uapi/linux/hyperv.h
View file

@ -313,6 +313,7 @@ enum hv_kvp_exchg_pool {
#define HV_INVALIDARG 0x80070057
#define HV_GUID_NOTFOUND 0x80041002
#define HV_ERROR_ALREADY_EXISTS 0x80070050
#define HV_ERROR_DISK_FULL 0x80070070
#define ADDR_FAMILY_NONE 0x00
#define ADDR_FAMILY_IPV4 0x01

20
tools/hv/hv_fcopy_daemon.c
View file

@ -37,12 +37,14 @@
static int target_fd;
static char target_fname[W_MAX_PATH];
static unsigned long long filesize;
static int hv_start_fcopy(struct hv_start_fcopy *smsg)
{
int error = HV_E_FAIL;
char *q, *p;
filesize = 0;
p = (char *)smsg->path_name;
snprintf(target_fname, sizeof(target_fname), "%s/%s",
(char *)smsg->path_name, (char *)smsg->file_name);
@ -98,14 +100,26 @@ static int hv_start_fcopy(struct hv_start_fcopy *smsg)
static int hv_copy_data(struct hv_do_fcopy *cpmsg)
{
ssize_t bytes_written;
int ret = 0;
bytes_written = pwrite(target_fd, cpmsg->data, cpmsg->size,
cpmsg->offset);
if (bytes_written != cpmsg->size)
return HV_E_FAIL;
filesize += cpmsg->size;
if (bytes_written != cpmsg->size) {
switch (errno) {
case ENOSPC:
ret = HV_ERROR_DISK_FULL;
break;
default:
ret = HV_E_FAIL;
break;
}
syslog(LOG_ERR, "pwrite failed to write %llu bytes: %ld (%s)",
filesize, (long)bytes_written, strerror(errno));
}
return 0;
return ret;
}
static int hv_copy_finished(void)