[LTP] [PATCH v1] Add tst_parse_filesize functionality in LTP test API

[Andrea Cervesato]

Signed-off-by: Andrea Cervesato <andrea.cervesato@suse.com>
---
 lib/tst_test.c | 41 +++++++++++++++++++++++++++++++++++++++++
 1 file changed, 41 insertions(+)

diff --git a/lib/tst_test.c b/lib/tst_test.c
index a79275722..6cb003802 100644
--- a/lib/tst_test.c
+++ b/lib/tst_test.c
@@ -679,6 +679,47 @@ int tst_parse_float(const char *str, float *val, float min, float max)
 	return 0;
 }
 
+int tst_parse_filesize(const char *str, long long *val, long long min, long long max)
+{
+	long long rval;
+	char *end;
+
+	if (!str)
+		return 0;
+
+	errno = 0;
+	rval = strtoll(str, &end, 10);
+
+	if (str == end)
+		return EINVAL;
+
+	if (errno)
+		return errno;
+
+	switch (*end) {
+	case 'g':
+	case 'G':
+		rval *= (1024 * 1024 * 1024);
+		break;
+	case 'm':
+	case 'M':
+		rval *= (1024 * 1024);
+		break;
+	case 'k':
+	case 'K':
+		rval *= 1024;
+		break;
+	default:
+		break;
+	}
+
+	if (rval > max || rval < min)
+		return ERANGE;
+
+	*val = rval;
+	return 0;
+}
+
 static void print_colored(const char *str)
 {
 	if (tst_color_enabled(STDOUT_FILENO))
-- 
2.34.1