Add <err.h> modeled on the BSD functions of the same name; this will let us clean up a lot of output from various shell tools.

1 files changed, 65 insertions, 0 deletions

diff --git a/apps/systemlib/err.h b/apps/systemlib/err.h
new file mode 100644
index 000000000..bc390d233
--- /dev/null
+++ b/apps/systemlib/err.h
@@ -0,0 +1,65 @@
+/****************************************************************************
+ *
+ *   Copyright (C) 2012 PX4 Development Team. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ * 3. Neither the name PX4 nor the names of its contributors may be
+ *    used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+ * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ *
+ ****************************************************************************/
+
+/**
+ * @file err.h
+ *
+ * Simple error/warning functions, heavily inspired by the BSD functions of
+ * the same names.
+ */
+
+#ifndef _SYSTEMLIB_ERR_H
+#define _SYSTEMLIB_ERR_H
+
+#include <stdarg.h>
+
+__BEGIN_DECLS
+
+__EXPORT const char *getprogname(void);
+
+__EXPORT void	err(int, const char *, ...) __attribute__((noreturn,format(printf,2, 3)));
+__EXPORT void	verr(int, const char *, va_list) __attribute__((noreturn,format(printf,2, 0)));
+__EXPORT void	errc(int, int, const char *, ...) __attribute__((noreturn,format(printf,3, 4)));
+__EXPORT void	verrc(int, int, const char *, va_list) __attribute__((noreturn,format(printf,3, 0)));
+__EXPORT void	errx(int, const char *, ...) __attribute__((noreturn,format(printf,2, 3)));
+__EXPORT void	verrx(int, const char *, va_list) __attribute__((noreturn,format(printf,2, 0)));
+__EXPORT void	warn(const char *, ...)  __attribute__((format(printf,1, 2)));
+__EXPORT void	vwarn(const char *, va_list)  __attribute__((format(printf,1, 0)));
+__EXPORT void	warnc(int, const char *, ...)  __attribute__((format(printf,2, 3)));
+__EXPORT void	vwarnc(int, const char *, va_list)  __attribute__((format(printf,2, 0)));
+__EXPORT void	warnx(const char *, ...)  __attribute__((format(printf,1, 2)));
+__EXPORT void	vwarnx(const char *, va_list)  __attribute__((format(printf,1, 0)));
+
+__END_DECLS
+
+#endif