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maint: improve error condition style in public API

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While auditing error messages in libvirt.c, I found a couple
instances that had not been converted to modern error styles,
and a few places that failed to dispatch the error through
the known-good connection.

* src/libvirt.c (virDomainPinEmulator, virDomainGetDiskErrors)
(virDomainSendKey, virDomainGetSecurityLabelList)
(virDomainGetEmulatorPinInfo): Use typical error reporting.
(virConnectGetCPUModelNames, virConnectRegisterCloseCallback)
(virConnectUnregisterCloseCallback, virDomainGetUUID): Report
error through connection.

Signed-off-by: Eric Blake <eblake@redhat.com>
This commit is contained in:
Eric Blake 2013-12-27 14:26:07 -07:00
parent 5e3e211dd5
commit ca0ea2a981
1 changed files with 32 additions and 28 deletions
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60
src/libvirt.c
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@ -3599,11 +3599,15 @@ virDomainGetUUID(virDomainPtr domain, unsigned char *uuid)
virDispatchError(NULL);
return -1;
}
virCheckNonNullArgReturn(uuid, -1);
virCheckNonNullArgGoto(uuid, error);
memcpy(uuid, &domain->uuid[0], VIR_UUID_BUFLEN);
return 0;
error:
virDispatchError(domain->conn);
return -1;
}
@ -9882,18 +9886,22 @@ virDomainSendKey(virDomainPtr domain,
virResetLastError();
if (keycodes == NULL ||
nkeycodes <= 0 || nkeycodes > VIR_DOMAIN_SEND_KEY_MAX_KEYS) {
virLibDomainError(VIR_ERR_OPERATION_INVALID, __FUNCTION__);
virDispatchError(NULL);
return -1;
}
if (!VIR_IS_CONNECTED_DOMAIN(domain)) {
virLibDomainError(VIR_ERR_INVALID_DOMAIN, __FUNCTION__);
virDispatchError(NULL);
return -1;
}
virCheckNonNullArgGoto(keycodes, error);
virCheckPositiveArgGoto(nkeycodes, error);
if (nkeycodes > VIR_DOMAIN_SEND_KEY_MAX_KEYS) {
virReportInvalidArg(nkeycodes,
_("nkeycodes in %s must be <= %d"),
__FUNCTION__, VIR_DOMAIN_SEND_KEY_MAX_KEYS);
goto error;
}
if (domain->conn->flags & VIR_CONNECT_RO) {
virLibDomainError(VIR_ERR_OPERATION_DENIED, __FUNCTION__);
goto error;
@ -10494,10 +10502,8 @@ virDomainPinEmulator(virDomainPtr domain, unsigned char *cpumap,
goto error;
}
if ((cpumap == NULL) || (maplen < 1)) {
virLibDomainError(VIR_ERR_INVALID_ARG, __FUNCTION__);
goto error;
}
virCheckNonNullArgGoto(cpumap, error);
virCheckPositiveArgGoto(maplen, error);
conn = domain->conn;
@ -10554,15 +10560,16 @@ virDomainGetEmulatorPinInfo(virDomainPtr domain, unsigned char *cpumap,
return -1;
}
if (!cpumap || maplen <= 0) {
virLibDomainError(VIR_ERR_INVALID_ARG, __FUNCTION__);
goto error;
}
virCheckNonNullArgGoto(cpumap, error);
virCheckPositiveArgGoto(maplen, error);
/* At most one of these two flags should be set. */
if ((flags & VIR_DOMAIN_AFFECT_LIVE) &&
(flags & VIR_DOMAIN_AFFECT_CONFIG)) {
virLibDomainError(VIR_ERR_INVALID_ARG, __FUNCTION__);
virReportInvalidArg(flags,
_("flags 'affect live' and 'affect config' in %s "
"are mutually exclusive"),
__FUNCTION__);
goto error;
}
conn = domain->conn;
@ -10776,10 +10783,7 @@ virDomainGetSecurityLabelList(virDomainPtr domain,
return -1;
}
if (seclabels == NULL) {
virLibDomainError(VIR_ERR_INVALID_ARG, __FUNCTION__);
goto error;
}
virCheckNonNullArgGoto(seclabels, error);
conn = domain->conn;
@ -18840,7 +18844,7 @@ virConnectGetCPUModelNames(virConnectPtr conn, const char *arch, char ***models,
virDispatchError(NULL);
return -1;
}
virCheckNonNullArgReturn(arch, -1);
virCheckNonNullArgGoto(arch, error);
if (conn->driver->connectGetCPUModelNames) {
int ret;
@ -21922,10 +21926,10 @@ virConnectRegisterCloseCallback(virConnectPtr conn,
return 0;
error:
virDispatchError(conn);
virObjectUnlock(conn->closeCallback);
virMutexUnlock(&conn->lock);
virObjectUnref(conn);
virDispatchError(NULL);
return -1;
}
@ -21980,9 +21984,9 @@ virConnectUnregisterCloseCallback(virConnectPtr conn,
return 0;
error:
virDispatchError(conn);
virObjectUnlock(conn->closeCallback);
virMutexUnlock(&conn->lock);
virDispatchError(NULL);
return -1;
}
@ -22341,10 +22345,10 @@ virDomainGetDiskErrors(virDomainPtr dom,
return -1;
}
if ((!errors && maxerrors) || (errors && !maxerrors)) {
virLibDomainError(VIR_ERR_INVALID_DOMAIN, __FUNCTION__);
goto error;
}
if (maxerrors)
virCheckNonNullArgGoto(errors, error);
else
virCheckNullArgGoto(errors, error);
if (dom->conn->driver->domainGetDiskErrors) {
int ret = dom->conn->driver->domainGetDiskErrors(dom, errors,