[LTP] [PATCH v2 2/2] lstat/lstat02.c: add ELOOP errno test

Zeng Linggang
2014-02-18T08:19:53Z

Add ELOOP errno test for lstat(2)

Signed-off-by: Zeng Linggang <zenglg.jy@cn.fujitsu.com>
---
testcases/kernel/syscalls/lstat/lstat02.c | 13 ++++++++++++-
1 file changed, 12 insertions(+), 1 deletion(-)

diff --git a/testcases/kernel/syscalls/lstat/lstat02.c b/testcases/kernel/syscalls/lstat/lstat02.c
index d108c12..b9494e2 100644
--- a/testcases/kernel/syscalls/lstat/lstat02.c
+++ b/testcases/kernel/syscalls/lstat/lstat02.c
@@ -29,6 +29,8 @@
* component is too long.
* 5) lstat(2) returns -1 and sets errno to ENOTDIR if the directory
* component in pathname is not a directory.
+ * 6) lstat(2) returns -1 and sets errno to ELOOP if the pathname has too
+ * many symbolic links encountered while traversing.
*/

#include <stdio.h>
@@ -55,6 +57,7 @@
#define TEST_ENOTDIR "test_file/test_enotdir"

static char longpathname[PATH_MAX + 2];
+static char elooppathname[PATH_MAX] = ".";

#if !defined(UCLINUX)
static void bad_addr_setup(int);
@@ -74,11 +77,13 @@ static struct test_case_t {
#endif
{longpathname, ENAMETOOLONG, NULL},
{TEST_ENOTDIR, ENOTDIR, NULL},
+ {elooppathname, ELOOP, NULL},
};

char *TCID = "lstat02";
int TST_TOTAL = ARRAY_SIZE(test_cases);
-static int exp_enos[] = { EACCES, EFAULT, ENAMETOOLONG, ENOENT, ENOTDIR, 0 };
+static int exp_enos[] = { EACCES, EFAULT, ENAMETOOLONG, ENOENT,
+ ENOTDIR, ELOOP, 0 };

static void setup(void);
static void lstat_verify(int);
@@ -110,6 +115,7 @@ int main(int ac, char **av)

static void setup(void)
{
+ int i;
struct passwd *ltpuser;

tst_require_root(NULL);
@@ -131,6 +137,11 @@ static void setup(void)
SAFE_TOUCH(cleanup, "test_file", MODE_RWX, NULL);

memset(longpathname, 'a', PATH_MAX+1);
+
+ SAFE_MKDIR(cleanup, "test_eloop", MODE_RWX);
+ SAFE_SYMLINK(cleanup, "../test_eloop", "test_eloop/test_eloop");
+ for (i = 0; i < 43; i++)
+ strcat(elooppathname, "/test_eloop");
}

#if !defined(UCLINUX)
--
1.8.4.2

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