[Qemu-devel] [RFC v1 2/3] util/qemu-error: Add a warning_report() function

[Alistair Francis <alistair.francis@xilinx.com>]

Add a functino which can be used similarly to error_report() execpt to
inform the users about warnings instead of errors.

The warning print does not include the timestamp and instead will
preface the messages with a 'warning: '.

Signed-off-by: Alistair Francis <alistair.francis@xilinx.com>
---

 include/qemu/error-report.h |  2 ++
 util/qemu-error.c           | 32 ++++++++++++++++++++++++++++++++
 2 files changed, 34 insertions(+)

diff --git a/include/qemu/error-report.h b/include/qemu/error-report.h
index 3001865896..c2600d2298 100644
--- a/include/qemu/error-report.h
+++ b/include/qemu/error-report.h
@@ -36,7 +36,9 @@ void error_vprintf_unless_qmp(const char *fmt, va_list ap) GCC_FMT_ATTR(1, 0);
 void error_printf_unless_qmp(const char *fmt, ...) GCC_FMT_ATTR(1, 2);
 void error_set_progname(const char *argv0);
 void error_vreport(const char *fmt, va_list ap) GCC_FMT_ATTR(1, 0);
+void warning_vreport(const char *fmt, va_list ap) GCC_FMT_ATTR(1, 0);
 void error_report(const char *fmt, ...) GCC_FMT_ATTR(1, 2);
+void warning_report(const char *fmt, ...) GCC_FMT_ATTR(1, 2);
 const char *error_get_progname(void);
 extern bool enable_timestamp_msg;
 
diff --git a/util/qemu-error.c b/util/qemu-error.c
index 1c5e35ecdb..2edd752fec 100644
--- a/util/qemu-error.c
+++ b/util/qemu-error.c
@@ -203,6 +203,23 @@ void error_vreport(const char *fmt, va_list ap)
 }
 
 /*
+ * Print a warning message ot the current monitor if we have one, else to
+ * stderr. This follows similar formating and use cases as error_vreport()
+ * except for these two differentce:
+ *     - It prefixes the message with 'warning: ' to indicate it is only a
+ *       warning.
+ *     - It does not print the timestamp.
+ */
+void warning_vreport(const char *fmt, va_list ap)
+{
+    error_vprintf("warning: ", ap);
+
+    print_loc();
+    error_vprintf(fmt, ap);
+    error_printf("\n");
+}
+
+/*
  * Print an error message to current monitor if we have one, else to stderr.
  * Format arguments like sprintf().  The resulting message should be a
  * single phrase, with no newline or trailing punctuation.
@@ -217,3 +234,18 @@ void error_report(const char *fmt, ...)
     error_vreport(fmt, ap);
     va_end(ap);
 }
+
+/*
+ * Print an warning message to current monitor if we have one, else to stderr.
+ * This follows the same formating and use cases as error_report()
+ * except it prefixes the message with 'warning: ' to indicate it is only a
+ * warning.
+ */
+void warning_report(const char *fmt, ...)
+{
+    va_list ap;
+
+    va_start(ap, fmt);
+    warning_vreport(fmt, ap);
+    va_end(ap);
+}
-- 
2.11.0