From: "Daniel P. Berrange" <berrange@xxxxxxxxxx>
The Xen driver had a number of error reports which passed a
constant string without format specifiers and was missing
"%s". Furthermore the errors were related to failing system
calls, but virReportSystemError was not used. So the only
useful piece of info (the errno) was being discarded
---
cfg.mk | 2 +-
src/xen/xen_hypervisor.c | 114 ++++++++++++++++++++++------------------------
2 files changed, 55 insertions(+), 61 deletions(-)
diff --git a/cfg.mk b/cfg.mk
index 4225336..46331fd 100644
--- a/cfg.mk
+++ b/cfg.mk
@@ -540,6 +540,7 @@ msg_gen_function += virReportError
msg_gen_function += virReportErrorHelper
msg_gen_function += virReportSystemError
msg_gen_function += virSecurityReportError
+msg_gen_function += virXenError
msg_gen_function += virXenInotifyError
msg_gen_function += virXenStoreError
msg_gen_function += virXendError
@@ -552,7 +553,6 @@ msg_gen_function += xenXMError
# so that they are translatable.
# msg_gen_function += fprintf
# msg_gen_function += testError
-# msg_gen_function += virXenError
# msg_gen_function += vshPrint
# msg_gen_function += vshError
diff --git a/src/xen/xen_hypervisor.c b/src/xen/xen_hypervisor.c
index b4ec579..9747010 100644
--- a/src/xen/xen_hypervisor.c
+++ b/src/xen/xen_hypervisor.c
@@ -526,9 +526,15 @@ static int
lock_pages(void *addr, size_t len)
{
#ifdef __linux__
- return mlock(addr, len);
+ if (mlock(addr, len) < 0) {
+ virReportSystemError(errno,
+ _("Unable to lock %zu bytes of memory"),
+ len);
+ return -1;
+ }
+ return 0;
#elif defined(__sun)
- return 0;
+ return 0;
#endif
}
@@ -536,9 +542,15 @@ static int
unlock_pages(void *addr, size_t len)
{
#ifdef __linux__
- return munlock(addr, len);
+ if (munlock(addr, len) < 0) {
+ virReportSystemError(errno,
+ _("Unable to unlock %zu bytes of memory"),
+ len);
+ return -1;
+ }
+ return 0;
#elif defined(__sun)
- return 0;
+ return 0;
#endif
}
@@ -900,21 +912,18 @@ xenHypervisorDoV0Op(int handle, xen_op_v0 * op)
hc.op = __HYPERVISOR_dom0_op;
hc.arg[0] = (unsigned long) op;
- if (lock_pages(op, sizeof(dom0_op_t)) < 0) {
- virXenError(VIR_ERR_XEN_CALL, " locking");
+ if (lock_pages(op, sizeof(dom0_op_t)) < 0)
return -1;
- }
ret = ioctl(handle, xen_ioctl_hypercall_cmd, (unsigned long) &hc);
if (ret < 0) {
- virXenError(VIR_ERR_XEN_CALL, " ioctl %d",
- xen_ioctl_hypercall_cmd);
+ virReportSystemError(errno,
+ _("Unable to issue hypervisor ioctl %d"),
+ xen_ioctl_hypercall_cmd);
}
- if (unlock_pages(op, sizeof(dom0_op_t)) < 0) {
- virXenError(VIR_ERR_XEN_CALL, " releasing");
+ if (unlock_pages(op, sizeof(dom0_op_t)) < 0)
ret = -1;
- }
if (ret < 0)
return -1;
@@ -942,21 +951,18 @@ xenHypervisorDoV1Op(int handle, xen_op_v1* op)
hc.op = __HYPERVISOR_dom0_op;
hc.arg[0] = (unsigned long) op;
- if (lock_pages(op, sizeof(dom0_op_t)) < 0) {
- virXenError(VIR_ERR_XEN_CALL, " locking");
+ if (lock_pages(op, sizeof(dom0_op_t)) < 0)
return -1;
- }
ret = ioctl(handle, xen_ioctl_hypercall_cmd, (unsigned long) &hc);
if (ret < 0) {
- virXenError(VIR_ERR_XEN_CALL, " ioctl %d",
- xen_ioctl_hypercall_cmd);
+ virReportSystemError(errno,
+ _("Unable to issue hypervisor ioctl %d"),
+ xen_ioctl_hypercall_cmd);
}
- if (unlock_pages(op, sizeof(dom0_op_t)) < 0) {
- virXenError(VIR_ERR_XEN_CALL, " releasing");
+ if (unlock_pages(op, sizeof(dom0_op_t)) < 0)
ret = -1;
- }
if (ret < 0)
return -1;
@@ -985,21 +991,18 @@ xenHypervisorDoV2Sys(int handle, xen_op_v2_sys* op)
hc.op = __HYPERVISOR_sysctl;
hc.arg[0] = (unsigned long) op;
- if (lock_pages(op, sizeof(dom0_op_t)) < 0) {
- virXenError(VIR_ERR_XEN_CALL, " locking");
+ if (lock_pages(op, sizeof(dom0_op_t)) < 0)
return -1;
- }
ret = ioctl(handle, xen_ioctl_hypercall_cmd, (unsigned long) &hc);
if (ret < 0) {
- virXenError(VIR_ERR_XEN_CALL, " sys ioctl %d",
- xen_ioctl_hypercall_cmd);
+ virReportSystemError(errno,
+ _("Unable to issue hypervisor ioctl %d"),
+ xen_ioctl_hypercall_cmd);
}
- if (unlock_pages(op, sizeof(dom0_op_t)) < 0) {
- virXenError(VIR_ERR_XEN_CALL, " releasing");
+ if (unlock_pages(op, sizeof(dom0_op_t)) < 0)
ret = -1;
- }
if (ret < 0)
return -1;
@@ -1028,21 +1031,18 @@ xenHypervisorDoV2Dom(int handle, xen_op_v2_dom* op)
hc.op = __HYPERVISOR_domctl;
hc.arg[0] = (unsigned long) op;
- if (lock_pages(op, sizeof(dom0_op_t)) < 0) {
- virXenError(VIR_ERR_XEN_CALL, " locking");
+ if (lock_pages(op, sizeof(dom0_op_t)) < 0)
return -1;
- }
ret = ioctl(handle, xen_ioctl_hypercall_cmd, (unsigned long) &hc);
if (ret < 0) {
- virXenError(VIR_ERR_XEN_CALL, " ioctl %d",
- xen_ioctl_hypercall_cmd);
+ virReportSystemError(errno,
+ _("Unable to issue hypervisor ioctl %d"),
+ xen_ioctl_hypercall_cmd);
}
- if (unlock_pages(op, sizeof(dom0_op_t)) < 0) {
- virXenError(VIR_ERR_XEN_CALL, " releasing");
+ if (unlock_pages(op, sizeof(dom0_op_t)) < 0)
ret = -1;
- }
if (ret < 0)
return -1;
@@ -1068,10 +1068,9 @@ virXen_getdomaininfolist(int handle, int first_domain, int maxids,
int ret = -1;
if (lock_pages(XEN_GETDOMAININFOLIST_DATA(dominfos),
- XEN_GETDOMAININFO_SIZE * maxids) < 0) {
- virXenError(VIR_ERR_XEN_CALL, " locking");
+ XEN_GETDOMAININFO_SIZE * maxids) < 0)
return -1;
- }
+
if (hv_versions.hypervisor > 1) {
xen_op_v2_sys op;
@@ -1123,10 +1122,9 @@ virXen_getdomaininfolist(int handle, int first_domain, int maxids,
ret = op.u.getdomaininfolist.num_domains;
}
if (unlock_pages(XEN_GETDOMAININFOLIST_DATA(dominfos),
- XEN_GETDOMAININFO_SIZE * maxids) < 0) {
- virXenError(VIR_ERR_XEN_CALL, " release");
+ XEN_GETDOMAININFO_SIZE * maxids) < 0)
ret = -1;
- }
+
return ret;
}
@@ -1747,10 +1745,9 @@ virXen_setvcpumap(int handle, int id, unsigned int vcpu,
if (hv_versions.hypervisor > 1) {
xen_op_v2_dom op;
- if (lock_pages(cpumap, maplen) < 0) {
- virXenError(VIR_ERR_XEN_CALL, " locking");
+ if (lock_pages(cpumap, maplen) < 0)
return -1;
- }
+
memset(&op, 0, sizeof(op));
op.cmd = XEN_V2_OP_SETVCPUMAP;
op.domain = (domid_t) id;
@@ -1782,10 +1779,8 @@ virXen_setvcpumap(int handle, int id, unsigned int vcpu,
ret = xenHypervisorDoV2Dom(handle, &op);
VIR_FREE(new);
- if (unlock_pages(cpumap, maplen) < 0) {
- virXenError(VIR_ERR_XEN_CALL, " release");
+ if (unlock_pages(cpumap, maplen) < 0)
ret = -1;
- }
} else {
cpumap_t xen_cpumap; /* limited to 64 CPUs in old hypervisors */
uint64_t *pm = &xen_cpumap;
@@ -1879,10 +1874,9 @@ virXen_getvcpusinfo(int handle, int id, unsigned int vcpu, virVcpuInfoPtr ipt,
ipt->cpu = op.u.getvcpuinfod5.online ? (int)op.u.getvcpuinfod5.cpu : -1;
}
if ((cpumap != NULL) && (maplen > 0)) {
- if (lock_pages(cpumap, maplen) < 0) {
- virXenError(VIR_ERR_XEN_CALL, " locking");
+ if (lock_pages(cpumap, maplen) < 0)
return -1;
- }
+
memset(cpumap, 0, maplen);
memset(&op, 0, sizeof(op));
op.cmd = XEN_V2_OP_GETVCPUMAP;
@@ -1897,10 +1891,8 @@ virXen_getvcpusinfo(int handle, int id, unsigned int vcpu, virVcpuInfoPtr ipt,
op.u.getvcpumapd5.cpumap.nr_cpus = maplen * 8;
}
ret = xenHypervisorDoV2Dom(handle, &op);
- if (unlock_pages(cpumap, maplen) < 0) {
- virXenError(VIR_ERR_XEN_CALL, " release");
+ if (unlock_pages(cpumap, maplen) < 0)
ret = -1;
- }
}
} else {
int mapl = maplen;
@@ -2079,8 +2071,9 @@ xenHypervisorInit(struct xenHypervisorVersions *override_versions)
*/
hv_versions.hypervisor = -1;
- virXenError(VIR_ERR_XEN_CALL, " ioctl %lu",
- (unsigned long) IOCTL_PRIVCMD_HYPERCALL);
+ virReportSystemError(errno,
+ _("Unable to issue hypervisor ioctl %lu"),
+ (unsigned long)IOCTL_PRIVCMD_HYPERCALL);
VIR_FORCE_CLOSE(fd);
in_init = 0;
return -1;
@@ -2178,14 +2171,15 @@ xenHypervisorInit(struct xenHypervisorVersions *override_versions)
goto done;
}
+
/*
* we failed to make the getdomaininfolist hypercall
*/
-
- VIR_DEBUG("Failed to find any Xen hypervisor method");
hv_versions.hypervisor = -1;
- virXenError(VIR_ERR_XEN_CALL, " ioctl %lu",
- (unsigned long)IOCTL_PRIVCMD_HYPERCALL);
+ virReportSystemError(errno,
+ _("Unable to issue hypervisor ioctl %lu"),
+ (unsigned long)IOCTL_PRIVCMD_HYPERCALL);
+ VIR_DEBUG("Failed to find any Xen hypervisor method");
VIR_FORCE_CLOSE(fd);
in_init = 0;
VIR_FREE(ipt);
--
1.7.10.4
--
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