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[libvirt] [PATCH] build: detect all improper uses of _("%s")



The only useful translation of "%s" as a format string is "%s" (I
suppose you could claim "%$1s" is also valid, but why bother).  So
it is not worth translating; fixing this exposes some instances
where we were failing to translate real error messages.

* cfg.mk (sc_prohibit_useless_translation): New rule.
* src/lxc/lxc_driver.c (lxcSetVcpuBWLive): Fix offender.
* src/openvz/openvz_conf.c (openvzReadFSConf): Likewise.
* src/qemu/qemu_cgroup.c (qemuSetupCgroupVcpuBW)
(qemuSetupCgroupForVcpu): Likewise.
* src/qemu/qemu_driver.c (qemuSetVcpusBWLive): Likewise.
* src/xenapi/xenapi_utils.c (xenapiSessionErrorHandle): Likewise.
---

This is a followup to:
https://www.redhat.com/archives/libvir-list/2012-July/msg00403.html

 cfg.mk                    |    6 ++++++
 src/lxc/lxc_driver.c      |    5 ++---
 src/openvz/openvz_conf.c  |    5 ++---
 src/qemu/qemu_cgroup.c    |   12 +++++-------
 src/qemu/qemu_driver.c    |    5 ++---
 src/xenapi/xenapi_utils.c |    8 +++++---
 6 files changed, 22 insertions(+), 19 deletions(-)

diff --git a/cfg.mk b/cfg.mk
index 7664d5d..6dfe799 100644
--- a/cfg.mk
+++ b/cfg.mk
@@ -622,6 +622,12 @@ sc_prohibit_newline_at_end_of_diagnostic:
 	  && { echo '$(ME): newline at end of message(s)' 1>&2;		\
 	    exit 1; } || :

+# The strings "" and "%s" should never be marked for translation.
+sc_prohibit_useless_translation:
+	@prohibit='_\("(%s)?"\)'					\
+	halt='$(ME): found useless translation'				\
+	  $(_sc_search_regexp)
+
 # Enforce recommended preprocessor indentation style.
 sc_preprocessor_indentation:
 	@if cppi --version >/dev/null 2>&1; then			\
diff --git a/src/lxc/lxc_driver.c b/src/lxc/lxc_driver.c
index b58aeae..ae024fe 100644
--- a/src/lxc/lxc_driver.c
+++ b/src/lxc/lxc_driver.c
@@ -2965,9 +2965,8 @@ cleanup:
     if (period) {
         rc = virCgroupSetCpuCfsPeriod(cgroup, old_period);
         if (rc < 0)
-            virReportSystemError(-rc,
-                                 _("%s"),
-                                 "Unable to rollback cpu bandwidth period");
+            virReportSystemError(-rc, "%s",
+                                 _("Unable to rollback cpu bandwidth period"));
     }

     return -1;
diff --git a/src/openvz/openvz_conf.c b/src/openvz/openvz_conf.c
index ad27d37..7b66299 100644
--- a/src/openvz/openvz_conf.c
+++ b/src/openvz/openvz_conf.c
@@ -457,9 +457,8 @@ openvzReadFSConf(virDomainDefPtr def,
             /* Ensure that we can multiply by 1024 without overflowing. */
             if (barrier > ULLONG_MAX / 1024 ||
                 limit > ULLONG_MAX / 1024 ) {
-                virReportSystemError(VIR_ERR_OVERFLOW,
-                                     _("%s"),
-                                     "Unable to parse quota");
+                virReportSystemError(VIR_ERR_OVERFLOW, "%s",
+                                     _("Unable to parse quota"));
                 goto error;
             }
             fs->space_soft_limit = barrier * 1024; /* unit is bytes */
diff --git a/src/qemu/qemu_cgroup.c b/src/qemu/qemu_cgroup.c
index f8f375f..e39f5e1 100644
--- a/src/qemu/qemu_cgroup.c
+++ b/src/qemu/qemu_cgroup.c
@@ -1,7 +1,7 @@
 /*
  * qemu_cgroup.c: QEMU cgroup management
  *
- * Copyright (C) 2006-2011 Red Hat, Inc.
+ * Copyright (C) 2006-2012 Red Hat, Inc.
  * Copyright (C) 2006 Daniel P. Berrange
  *
  * This library is free software; you can redistribute it and/or
@@ -472,9 +472,8 @@ cleanup:
     if (period) {
         rc = virCgroupSetCpuCfsPeriod(cgroup, old_period);
         if (rc < 0)
-            virReportSystemError(-rc,
-                                 _("%s"),
-                                 "Unable to rollback cpu bandwidth period");
+            virReportSystemError(-rc, "%s",
+                                 _("Unable to rollback cpu bandwidth period"));
     }

     return -1;
@@ -507,9 +506,8 @@ int qemuSetupCgroupForVcpu(struct qemud_driver *driver, virDomainObjPtr vm)
         if (qemuCgroupControllerActive(driver, VIR_CGROUP_CONTROLLER_CPU)) {
             /* Ensure that we can multiply by vcpus without overflowing. */
             if (quota > LLONG_MAX / vm->def->vcpus) {
-                virReportSystemError(EINVAL,
-                                     _("%s"),
-                                     "Unable to set cpu bandwidth quota");
+                virReportSystemError(EINVAL, "%s",
+                                     _("Unable to set cpu bandwidth quota"));
                 goto cleanup;
             }

diff --git a/src/qemu/qemu_driver.c b/src/qemu/qemu_driver.c
index 3410535..377be9f 100644
--- a/src/qemu/qemu_driver.c
+++ b/src/qemu/qemu_driver.c
@@ -7134,9 +7134,8 @@ qemuSetVcpusBWLive(virDomainObjPtr vm, virCgroupPtr cgroup,

     /* Ensure that we can multiply by vcpus without overflowing. */
     if (quota > LLONG_MAX / vm->def->vcpus) {
-        virReportSystemError(EINVAL,
-                             _("%s"),
-                             "Unable to set cpu bandwidth quota");
+        virReportSystemError(EINVAL, "%s",
+                             _("Unable to set cpu bandwidth quota"));
         goto cleanup;
     }

diff --git a/src/xenapi/xenapi_utils.c b/src/xenapi/xenapi_utils.c
index 3471b6a..e5a9cc5 100644
--- a/src/xenapi/xenapi_utils.c
+++ b/src/xenapi/xenapi_utils.c
@@ -1,6 +1,6 @@
 /*
  * xenapi_utils.c: Xen API driver -- utils parts.
- * Copyright (C) 2011 Red Hat, Inc.
+ * Copyright (C) 2011-2012 Red Hat, Inc.
  * Copyright (C) 2009, 2010 Citrix Ltd.
  *
  * This library is free software; you can redistribute it and/or
@@ -372,11 +372,13 @@ xenapiSessionErrorHandle(virConnectPtr conn, virErrorNumber errNum,

     if (buf == NULL && priv != NULL && priv->session != NULL) {
         char *ret = returnErrorFromSession(priv->session);
-        virReportErrorHelper(VIR_FROM_XENAPI, errNum, filename, func, lineno, _("%s"), ret);
+        virReportErrorHelper(VIR_FROM_XENAPI, errNum, filename, func, lineno,
+                             "%s", ret);
         xen_session_clear_error(priv->session);
         VIR_FREE(ret);
     } else {
-        virReportErrorHelper(VIR_FROM_XENAPI, errNum, filename, func, lineno, _("%s"), buf);
+        virReportErrorHelper(VIR_FROM_XENAPI, errNum, filename, func, lineno,
+                             "%s", buf);
     }
 }

-- 
1.7.10.4


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