commit 0f672f6c0b52b7b0700b0915c72b540721af4465
author David Brazdil <dbrazdil@google.com> Tue Dec 10 10:32:29 2019 +0000
committer David Brazdil <dbrazdil@google.com> Tue Dec 10 19:03:18 2019 +0000
tree 85c8cba019caa205e4f8920d72d93f6d6deaf29c
parent 3a0ad55d848b50499b68d7141d4eca997fce28ef

Update Linux to v5.4.2

Change-Id: Idf6911045d9d382da2cfe01b1edff026404ac8fd

tools/testing/selftests/proc/read.c

diff --git a/tools/testing/selftests/proc/read.c b/tools/testing/selftests/proc/read.c
index 563e752..b3ef9e1 100644
--- a/tools/testing/selftests/proc/read.c
+++ b/tools/testing/selftests/proc/read.c
@@ -26,8 +26,10 @@
 #include <dirent.h>
 #include <stdbool.h>
 #include <stdlib.h>
+#include <stdio.h>
 #include <string.h>
 #include <sys/stat.h>
+#include <sys/vfs.h>
 #include <fcntl.h>
 #include <unistd.h>
 
@@ -123,10 +125,22 @@
 int main(void)
 {
 	DIR *d;
+	struct statfs sfs;
 
 	d = opendir("/proc");
 	if (!d)
+		return 4;
+
+	/* Ensure /proc is proc. */
+	if (fstatfs(dirfd(d), &sfs) == -1) {
+		return 1;
+	}
+	if (sfs.f_type != 0x9fa0) {
+		fprintf(stderr, "error: unexpected f_type %lx\n", (long)sfs.f_type);
 		return 2;
+	}
+
 	f(d, 0);
+
 	return 0;
 }