Fix scandir function to reset the errno when the

selector returns zero(no entries) modifying the errno.
The attached test case implements a dummy filter that returns
alway no entries, but change the errno. scandir is not expected
to fail, just returning 0 entries.

Signed-off-by: Filippo Arcidiacono <filippo.arcidiacono@st.com>
Signed-off-by: Giuseppe Cavallaro <peppe.cavallaro@st.com>
Signed-off-by: Carmelo Amoroso <carmelo.amoroso@st.com>

1 files changed, 21 insertions, 0 deletions

diff --git a/test/misc/tst-scandir.c b/test/misc/tst-scandir.c
new file mode 100644
index 000000000..6e4646142
--- /dev/null
+++ b/test/misc/tst-scandir.c
@@ -0,0 +1,21 @@
+#include <dirent.h>
+#include <errno.h>
+
+int skip_all(const struct dirent *dirbuf)
+{
+	__set_errno(EBADF);
+	return 0;
+}
+
+int main()
+{
+	struct dirent **namelist;
+	int n;
+
+	n = scandir(".", &namelist, skip_all, 0);
+	if (n < 0) {
+		perror("scandir");
+		return 1;
+	}
+	return 0;
+}