[LTP] [PATCH] chdir/chdir01.c: Add ELOOP error number test

[Zeng Linggang <zenglg.jy@cn.fujitsu.com>]

Add ELOOP error number test in chdir01.c for chdir(2)

Signed-off-by: Zeng Linggang <zenglg.jy@cn.fujitsu.com>
---
 testcases/kernel/syscalls/chdir/chdir01.c | 21 +++++++++++++++++++--
 1 file changed, 19 insertions(+), 2 deletions(-)

diff --git a/testcases/kernel/syscalls/chdir/chdir01.c b/testcases/kernel/syscalls/chdir/chdir01.c
index 04fb8b4..c4e74fb 100644
--- a/testcases/kernel/syscalls/chdir/chdir01.c
+++ b/testcases/kernel/syscalls/chdir/chdir01.c
@@ -59,9 +59,9 @@
 #include "safe_macros.h"
 
 char *TCID = "chdir01";
-int TST_TOTAL = 1;
+int TST_TOTAL = 2;
 
-int exp_enos[] = { ENOTDIR, 0 };
+int exp_enos[] = { ENOTDIR, ELOOP, 0 };
 
 void setup(void);
 void cleanup(void);
@@ -120,6 +120,23 @@ int main(int ac, char **av)
 
 		SAFE_CHDIR(cleanup, "..");
 
+		/* ELOOP */
+		SAFE_SYMLINK(cleanup, "test_eloop1", "test_eloop2");
+		SAFE_SYMLINK(cleanup, "test_eloop2", "test_eloop1");
+
+		TEST(chdir("test_eloop1"));
+
+		if (TEST_RETURN != -1) {
+			tst_resm(TFAIL, "call succeeded unexpectedly");
+		} else if (TEST_ERRNO != ELOOP) {
+			tst_resm(TFAIL | TTERRNO,
+				 "failed unexpectedly; wanted ELOOP");
+		} else {
+			tst_resm(TPASS, "failed as expected with ELOOP");
+		}
+
+		SAFE_UNLINK(cleanup, "test_eloop1");
+		SAFE_UNLINK(cleanup, "test_eloop2");
 	}
 	cleanup();
 
-- 
1.8.2.1



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