[LTP] [PATCH v3 1/2] tst_memutils.c: Add tst_print_meminfo function

[Wei Gao]

Signed-off-by: Wei Gao <wegao@suse.com>
---
 include/tst_memutils.h    |  6 ++++++
 include/tst_safe_macros.h |  2 ++
 lib/safe_macros.c         | 16 ++++++++++++++++
 lib/tst_memutils.c        |  5 +++++
 4 files changed, 29 insertions(+)

diff --git a/include/tst_memutils.h b/include/tst_memutils.h
index 19b593430..439b2485a 100644
--- a/include/tst_memutils.h
+++ b/include/tst_memutils.h
@@ -58,4 +58,10 @@ void tst_enable_oom_protection(pid_t pid);
  */
 void tst_disable_oom_protection(pid_t pid);
 
+void tst_print_meminfo(void);
+
+void tst_print_meminfo_(const char *file, const int lineno);
+
+#define tst_print_meminfo() tst_print_meminfo_(__FILE__, __LINE__)
+
 #endif /* TST_MEMUTILS_H__ */
diff --git a/include/tst_safe_macros.h b/include/tst_safe_macros.h
index c899c4f2c..520a173dd 100644
--- a/include/tst_safe_macros.h
+++ b/include/tst_safe_macros.h
@@ -671,4 +671,6 @@ int safe_sysinfo(const char *file, const int lineno, struct sysinfo *info);
 #define SAFE_SYSINFO(info) \
 	safe_sysinfo(__FILE__, __LINE__, (info))
 
+int safe_print_file(const char *file, const int lineno, char *path);
+
 #endif /* SAFE_MACROS_H__ */
diff --git a/lib/safe_macros.c b/lib/safe_macros.c
index 951e1b064..bb67467b7 100644
--- a/lib/safe_macros.c
+++ b/lib/safe_macros.c
@@ -1352,3 +1352,19 @@ int safe_sysinfo(const char *file, const int lineno, struct sysinfo *info)
 
 	return ret;
 }
+
+int safe_print_file(const char *file, const int lineno, char *path)
+{
+	int ret;
+	FILE *pfile;
+	char line[PATH_MAX];
+
+	pfile = safe_fopen(file, lineno, NULL, path, "r");
+
+	while (fgets(line, sizeof(line), pfile))
+		tst_resm_(file, lineno, TINFO, "%s", line);
+
+	ret = safe_fclose(file, lineno, NULL, pfile);
+
+	return ret;
+}
diff --git a/lib/tst_memutils.c b/lib/tst_memutils.c
index c5382ff10..6c1e7c29e 100644
--- a/lib/tst_memutils.c
+++ b/lib/tst_memutils.c
@@ -182,3 +182,8 @@ void tst_disable_oom_protection(pid_t pid)
 {
 	set_oom_score_adj(pid, 0);
 }
+
+void tst_print_meminfo_(const char *file, const int lineno)
+{
+	safe_print_file(file, lineno, "/proc/meminfo");
+}
-- 
2.35.3