4 files changed, 39 insertions, 0 deletions
diff --git a/test/syscalls/linux/mkdir.cc b/test/syscalls/linux/mkdir.cc
index 4036a9275..27758203d 100644
--- a/test/syscalls/linux/mkdir.cc
+++ b/test/syscalls/linux/mkdir.cc
@@ -82,6 +82,13 @@ TEST_F(MkdirTest, FailsOnDirWithoutWritePerms) {
               SyscallFailsWithErrno(EACCES));
 }
 
+TEST_F(MkdirTest, MkdirAtEmptyPath) {
+  ASSERT_THAT(mkdir(dirname_.c_str(), 0777), SyscallSucceeds());
+  auto fd =
+      ASSERT_NO_ERRNO_AND_VALUE(Open(dirname_, O_RDONLY | O_DIRECTORY, 0666));
+  EXPECT_THAT(mkdirat(fd.get(), "", 0777), SyscallFailsWithErrno(ENOENT));
+}
+
 }  // namespace
 
 }  // namespace testing
diff --git a/test/syscalls/linux/mknod.cc b/test/syscalls/linux/mknod.cc
index 2ba8c11b8..89e4564e8 100644
--- a/test/syscalls/linux/mknod.cc
+++ b/test/syscalls/linux/mknod.cc
@@ -203,6 +203,14 @@ TEST(MknodTest, FifoTruncNoOp) {
   EXPECT_THAT(ftruncate(wfd.get(), 0), SyscallFailsWithErrno(EINVAL));
 }
 
+TEST(MknodTest, MknodAtEmptyPath) {
+  auto dir = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateDir());
+  auto fd =
+      ASSERT_NO_ERRNO_AND_VALUE(Open(dir.path(), O_RDONLY | O_DIRECTORY, 0666));
+  EXPECT_THAT(mknodat(fd.get(), "", S_IFREG | 0777, 0),
+              SyscallFailsWithErrno(ENOENT));
+}
+
 }  // namespace
 
 }  // namespace testing
diff --git a/test/syscalls/linux/symlink.cc b/test/syscalls/linux/symlink.cc
index f4f6ff490..4d9eba7f0 100644
--- a/test/syscalls/linux/symlink.cc
+++ b/test/syscalls/linux/symlink.cc
@@ -327,6 +327,16 @@ TEST(SymlinkTest, FollowUpdatesATime) {
   EXPECT_LT(st_before_follow.st_atime, st_after_follow.st_atime);
 }
 
+TEST(SymlinkTest, SymlinkAtEmptyPath) {
+  auto file = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFile());
+  auto dir = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateDir());
+
+  auto fd =
+      ASSERT_NO_ERRNO_AND_VALUE(Open(dir.path(), O_RDONLY | O_DIRECTORY, 0666));
+  EXPECT_THAT(symlinkat(file.path().c_str(), fd.get(), ""),
+              SyscallFailsWithErrno(ENOENT));
+}
+
 class ParamSymlinkTest : public ::testing::TestWithParam<std::string> {};
 
 // Test that creating an existing symlink with creat will create the target.
diff --git a/test/syscalls/linux/unlink.cc b/test/syscalls/linux/unlink.cc
index 2040375c9..061e2e0f1 100644
--- a/test/syscalls/linux/unlink.cc
+++ b/test/syscalls/linux/unlink.cc
@@ -208,6 +208,20 @@ TEST(RmdirTest, CanRemoveWithTrailingSlashes) {
   ASSERT_THAT(rmdir(slashslash.c_str()), SyscallSucceeds());
 }
 
+TEST(UnlinkTest, UnlinkAtEmptyPath) {
+  auto dir = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateDir());
+
+  auto file = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFileIn(dir.path()));
+  auto fd = ASSERT_NO_ERRNO_AND_VALUE(Open(file.path(), O_RDWR, 0666));
+  EXPECT_THAT(unlinkat(fd.get(), "", 0), SyscallFailsWithErrno(ENOENT));
+
+  auto dirInDir = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateDirIn(dir.path()));
+  auto dirFD = ASSERT_NO_ERRNO_AND_VALUE(
+      Open(dirInDir.path(), O_RDONLY | O_DIRECTORY, 0666));
+  EXPECT_THAT(unlinkat(dirFD.get(), "", AT_REMOVEDIR),
+              SyscallFailsWithErrno(ENOENT));
+}
+
 }  // namespace
 
 }  // namespace testing