X-Git-Url: http://git.lttng.org/?a=blobdiff_plain;f=include%2Fusterr.h;h=0f6d3608bdbdcc6b859c804c98508fcc0d35727c;hb=a09dac63957396890b1085cac0fee92ecc5db87a;hp=75d507ac10825825ec931a00f561d625192d1690;hpb=106e716d77762f0d27456e276be8c3df8e129eae;p=ust.git

diff --git a/include/usterr.h b/include/usterr.h
index 75d507a..0f6d360 100644
--- a/include/usterr.h
+++ b/include/usterr.h
@@ -1,3 +1,20 @@
+/* Copyright (C) 2009  Pierre-Marc Fournier
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301 USA
+ */
+
 #ifndef USTERR_H
 #define USTERR_H
 
@@ -23,6 +40,8 @@
  * signal handlers, so we must use a print method which is signal safe.
  */
 
+extern int ust_safe_snprintf(char *str, size_t n, const char *fmt, ...);
+
 #define sigsafe_print_err(fmt, args...) \
 { \
 	/* Can't use dynamic allocation. Limit ourselves to 250 chars. */ \
@@ -32,7 +51,7 @@
 	/* Save the errno. */ \
 	____saved_errno = errno; \
 \
-	snprintf(____buf, sizeof(____buf), fmt, ## args); \
+	ust_safe_snprintf(____buf, sizeof(____buf), fmt, ## args); \
 \
 	/* Add end of string in case of buffer overflow. */ \
 	____buf[sizeof(____buf)-1] = 0; \
@@ -78,5 +97,6 @@
 
 #define BUG_ON(condition) do { if (unlikely(condition)) ERR("condition not respected (BUG)"); } while(0)
 #define WARN_ON(condition) do { if (unlikely(condition)) WARN("condition not respected on line %s:%d", __FILE__, __LINE__); } while(0)
+#define WARN_ON_ONCE(condition) WARN_ON(condition)
 
 #endif /* USTERR_H */