[LTP] [PATCH v3 1/2] lib: Add SAFE_SPLICE() macro

[Andrea Cervesato <andrea.cervesato@suse.de>]

From: Andrea Cervesato <andrea.cervesato@suse.com>

Add new SAFE_SPLIT() in lapi/splice.h.

Signed-off-by: Andrea Cervesato <andrea.cervesato@suse.com>
---
 include/lapi/splice.h | 28 ++++++++++++++++++++++++++++
 1 file changed, 28 insertions(+)

diff --git a/include/lapi/splice.h b/include/lapi/splice.h
index 191b22d2d6397d1efad5e2025be5a2c4370724dc..e346e5cca9f44bd8421c6b99f84cd4646269ac1f 100644
--- a/include/lapi/splice.h
+++ b/include/lapi/splice.h
@@ -7,6 +7,13 @@
 #ifndef LAPI_SPLICE_H__
 #define LAPI_SPLICE_H__
 
+#ifndef _GNU_SOURCE
+# define _GNU_SOURCE
+#endif
+
+#include <fcntl.h>
+#include <sys/types.h>
+
 #include "config.h"
 #include "lapi/syscalls.h"
 
@@ -19,4 +26,25 @@ static inline ssize_t splice(int fd_in, loff_t *off_in, int fd_out,
 }
 #endif
 
+static inline ssize_t safe_splice(const char *file, const int lineno,
+				   int fd_in, loff_t *off_in,
+				   int fd_out, loff_t *off_out,
+				   size_t len, unsigned int flags)
+{
+	ssize_t ret;
+
+	ret = splice(fd_in, off_in, fd_out, off_out, len, flags);
+
+	if (ret < 0) {
+		tst_brk_(file, lineno, TBROK | TERRNO,
+			"splice(%d, %d, %zu) failed", fd_in, fd_out, len);
+	}
+
+	return ret;
+}
+
+#define SAFE_SPLICE(fd_in, off_in, fd_out, off_out, len, flags) \
+	safe_splice(__FILE__, __LINE__, (fd_in), (off_in), (fd_out), \
+		    (off_out), (len), (flags))
+
 #endif /* LAPI_SPLICE_H__ */

-- 
2.51.0


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