[LTP] [PATCH v2 1/2] Add SAFE_PIPE2.

[laniel_francis@privacyrequired.com]

From: Francis Laniel <laniel_francis@privacyrequired.com>

This macro is the equivalent of SAFE_PIPE for pipe2 system call.
---
 include/safe_macros_fn.h  |  3 +++
 include/tst_safe_macros.h |  3 +++
 lib/safe_macros.c         | 15 +++++++++++++++
 3 files changed, 21 insertions(+)

diff --git a/include/safe_macros_fn.h b/include/safe_macros_fn.h
index 3df952811..ec2d34ae3 100644
--- a/include/safe_macros_fn.h
+++ b/include/safe_macros_fn.h
@@ -67,6 +67,9 @@ int safe_open(const char *file, const int lineno,
 int safe_pipe(const char *file, const int lineno,
               void (*cleanup_fn)(void), int fildes[2]);
 
+int safe_pipe2(const char *file, const int lineno, void (*cleanup_fn) (void),
+               int fildes[2], int flags);
+
 ssize_t safe_read(const char *file, const int lineno,
                   void (*cleanup_fn)(void), char len_strict, int fildes,
                   void *buf, size_t nbyte);
diff --git a/include/tst_safe_macros.h b/include/tst_safe_macros.h
index d95d26219..1738d3cc6 100644
--- a/include/tst_safe_macros.h
+++ b/include/tst_safe_macros.h
@@ -87,6 +87,9 @@ static inline int safe_dup(const char *file, const int lineno,
 #define SAFE_PIPE(fildes) \
 	safe_pipe(__FILE__, __LINE__, NULL, (fildes))
 
+#define SAFE_PIPE2(fildes, flags) \
+	safe_pipe2(__FILE__, __LINE__, NULL, (fildes), (flags))
+
 #define SAFE_READ(len_strict, fildes, buf, nbyte) \
 	safe_read(__FILE__, __LINE__, NULL, (len_strict), (fildes), (buf), (nbyte))
 
diff --git a/lib/safe_macros.c b/lib/safe_macros.c
index dde9b7b5e..780245821 100644
--- a/lib/safe_macros.c
+++ b/lib/safe_macros.c
@@ -248,6 +248,21 @@ int safe_pipe(const char *file, const int lineno, void (*cleanup_fn) (void),
 	return rval;
 }
 
+int safe_pipe2(const char *file, const int lineno, void (*cleanup_fn) (void),
+               int fildes[2], int flags)
+{
+	int rval;
+
+	rval = pipe2(fildes, flags);
+	if (rval == -1) {
+		tst_brkm(TBROK | TERRNO, cleanup_fn,
+			 "%s:%d: pipe2({%d,%d}) failed",
+			 file, lineno, fildes[0], fildes[1]);
+	}
+
+	return rval;
+}
+
 ssize_t safe_read(const char *file, const int lineno, void (*cleanup_fn) (void),
                   char len_strict, int fildes, void *buf, size_t nbyte)
 {
-- 
2.20.1