[LTP] [PATCH] lib: Add SAFE_MSYNC() macro to LTP library

[Avinesh Kumar <akumar@suse.de>]

Signed-off-by: Avinesh Kumar <akumar@suse.de>
---
 include/tst_safe_macros.h |  6 ++++++
 lib/tst_safe_macros.c     | 19 +++++++++++++++++++
 2 files changed, 25 insertions(+)

diff --git a/include/tst_safe_macros.h b/include/tst_safe_macros.h
index 0cf3d7878..c899c4f2c 100644
--- a/include/tst_safe_macros.h
+++ b/include/tst_safe_macros.h
@@ -86,6 +86,12 @@ void *safe_realloc(const char *file, const int lineno, void *ptr, size_t size);
 #define SAFE_MUNMAP(addr, length) \
 	safe_munmap(__FILE__, __LINE__, NULL, (addr), (length))
 
+int safe_msync(const char *file, const int lineno, void *addr,
+				size_t length, int flags);
+
+#define SAFE_MSYNC(addr, length, flags) \
+	safe_msync(__FILE__, __LINE__, (addr), (length), (flags))
+
 #define SAFE_OPEN(pathname, oflags, ...) \
 	safe_open(__FILE__, __LINE__, NULL, (pathname), (oflags), \
 	    ##__VA_ARGS__)
diff --git a/lib/tst_safe_macros.c b/lib/tst_safe_macros.c
index c4cdc87e7..7f28d43e5 100644
--- a/lib/tst_safe_macros.c
+++ b/lib/tst_safe_macros.c
@@ -591,3 +591,22 @@ void safe_cmd(const char *file, const int lineno, const char *const argv[],
 		tst_brk_(file, lineno, TBROK, "%s failed (%d)", argv[0], rval);
 	}
 }
+
+int safe_msync(const char *file, const int lineno, void *addr,
+				size_t length, int flags)
+{
+	int rval;
+
+	rval = msync(addr, length, flags);
+
+	if (rval == -1) {
+		tst_brk_(file, lineno, TBROK | TERRNO,
+			"msync(%p, %zu, %d) failed", addr, length, flags);
+	} else if (rval) {
+		tst_brk_(file, lineno, TBROK | TERRNO,
+			"Invalid msync(%p, %zu, %d) return value %d",
+			addr, length, flags, rval);
+	}
+
+	return rval;
+}
-- 
2.42.0


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