Adding upstream version 18.2.2.upstream/18.2.2

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 3775 insertions, 0 deletions

diff --git a/src/test/libcephfs/test.cc b/src/test/libcephfs/test.cc
new file mode 100644
index 000000000..c83ddccf9
--- /dev/null
+++ b/src/test/libcephfs/test.cc
@@ -0,0 +1,3775 @@
+// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
+// vim: ts=8 sw=2 smarttab
+/*
+ * Ceph - scalable distributed file system
+ *
+ * Copyright (C) 2011 New Dream Network
+ *
+ * This is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License version 2.1, as published by the Free Software
+ * Foundation.  See file COPYING.
+ *
+ */
+
+#include "include/compat.h"
+#include "gtest/gtest.h"
+#include "include/cephfs/libcephfs.h"
+#include "mds/mdstypes.h"
+#include "include/stat.h"
+#include <errno.h>
+#include <fcntl.h>
+#include <unistd.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <dirent.h>
+#include <sys/uio.h>
+#include <sys/time.h>
+
+#ifndef _WIN32
+#include <sys/resource.h>
+#endif
+
+#include "common/Clock.h"
+
+#ifdef __linux__
+#include <limits.h>
+#include <sys/xattr.h>
+#endif
+
+#include <fmt/format.h>
+#include <map>
+#include <vector>
+#include <thread>
+#include <regex>
+
+using namespace std;
+
+TEST(LibCephFS, OpenEmptyComponent) {
+
+  pid_t mypid = getpid();
+  struct ceph_mount_info *cmount;
+  ASSERT_EQ(0, ceph_create(&cmount, NULL));
+  ASSERT_EQ(0, ceph_conf_read_file(cmount, NULL));
+  ASSERT_EQ(0, ceph_conf_parse_env(cmount, NULL));
+  ASSERT_EQ(0, ceph_mount(cmount, "/"));
+
+  char c_dir[1024];
+  sprintf(c_dir, "/open_test_%d", mypid);
+  struct ceph_dir_result *dirp;
+
+  ASSERT_EQ(0, ceph_mkdirs(cmount, c_dir, 0777));
+
+  ASSERT_EQ(0, ceph_opendir(cmount, c_dir, &dirp));
+
+  char c_path[1024];
+  sprintf(c_path, "/open_test_%d//created_file_%d", mypid, mypid);
+  int fd = ceph_open(cmount, c_path, O_RDONLY|O_CREAT, 0666);
+  ASSERT_LT(0, fd);
+
+  ASSERT_EQ(0, ceph_close(cmount, fd));
+  ASSERT_EQ(0, ceph_closedir(cmount, dirp));
+  ceph_shutdown(cmount);
+
+  ASSERT_EQ(0, ceph_create(&cmount, NULL));
+  ASSERT_EQ(0, ceph_conf_read_file(cmount, NULL));
+  ASSERT_EQ(0, ceph_conf_parse_env(cmount, NULL));
+
+  ASSERT_EQ(0, ceph_mount(cmount, "/"));
+
+  fd = ceph_open(cmount, c_path, O_RDONLY, 0666);
+  ASSERT_LT(0, fd);
+  ASSERT_EQ(0, ceph_close(cmount, fd));
+
+  // cleanup
+  ASSERT_EQ(0, ceph_unlink(cmount, c_path));
+  ASSERT_EQ(0, ceph_rmdir(cmount, c_dir));
+
+  ceph_shutdown(cmount);
+}
+
+TEST(LibCephFS, OpenReadTruncate) {
+  struct ceph_mount_info *cmount;
+  ASSERT_EQ(0, ceph_create(&cmount, NULL));
+  ASSERT_EQ(0, ceph_conf_read_file(cmount, NULL));
+  ASSERT_EQ(0, ceph_conf_parse_env(cmount, NULL));
+  ASSERT_EQ(0, ceph_mount(cmount, "/"));
+
+  auto path = fmt::format("test_open_rdt_{}", getpid());
+  int fd = ceph_open(cmount, path.c_str(), O_WRONLY|O_CREAT, 0666);
+  ASSERT_LE(0, fd);
+
+  auto data = std::string("hello world");
+  ASSERT_EQ(ceph_write(cmount, fd, data.c_str(), data.size(), 0), (int)data.size());
+  ASSERT_EQ(0, ceph_close(cmount, fd));
+
+  fd = ceph_open(cmount, path.c_str(), O_RDONLY, 0);
+  ASSERT_LE(0, fd);
+  ASSERT_EQ(ceph_ftruncate(cmount, fd, 0), -CEPHFS_EBADF);
+  ASSERT_EQ(ceph_ftruncate(cmount, fd, 1), -CEPHFS_EBADF);
+  ASSERT_EQ(0, ceph_close(cmount, fd));
+
+  ceph_shutdown(cmount);
+}
+
+TEST(LibCephFS, OpenReadWrite) {
+  struct ceph_mount_info *cmount;
+  ASSERT_EQ(0, ceph_create(&cmount, NULL));
+  ASSERT_EQ(0, ceph_conf_read_file(cmount, NULL));
+  ASSERT_EQ(0, ceph_conf_parse_env(cmount, NULL));
+  ASSERT_EQ(0, ceph_mount(cmount, "/"));
+
+  char c_path[1024];
+  sprintf(c_path, "test_open_rdwr_%d", getpid());
+  int fd = ceph_open(cmount, c_path, O_WRONLY|O_CREAT, 0666);
+  ASSERT_LT(0, fd);
+
+  const char *out_buf = "hello world";
+  size_t size = strlen(out_buf);
+  char in_buf[100];
+  ASSERT_EQ(ceph_write(cmount, fd, out_buf, size, 0), (int)size);
+  ASSERT_EQ(ceph_read(cmount, fd, in_buf, sizeof(in_buf), 0), -CEPHFS_EBADF);
+  ASSERT_EQ(0, ceph_close(cmount, fd));
+
+  fd = ceph_open(cmount, c_path, O_RDONLY, 0);
+  ASSERT_LT(0, fd);
+  ASSERT_EQ(ceph_write(cmount, fd, out_buf, size, 0), -CEPHFS_EBADF);
+  ASSERT_EQ(ceph_read(cmount, fd, in_buf, sizeof(in_buf), 0), (int)size);
+  ASSERT_EQ(0, ceph_close(cmount, fd));
+
+  fd = ceph_open(cmount, c_path, O_RDWR, 0);
+  ASSERT_LT(0, fd);
+  ASSERT_EQ(ceph_write(cmount, fd, out_buf, size, 0), (int)size);
+  ASSERT_EQ(ceph_read(cmount, fd, in_buf, sizeof(in_buf), 0), (int)size);
+  ASSERT_EQ(0, ceph_close(cmount, fd));
+
+  ceph_shutdown(cmount);
+}
+
+TEST(LibCephFS, MountNonExist) {
+
+  struct ceph_mount_info *cmount;
+
+  ASSERT_EQ(0, ceph_create(&cmount, NULL));
+  ASSERT_EQ(0, ceph_conf_read_file(cmount, NULL));
+  ASSERT_EQ(0, ceph_conf_parse_env(cmount, NULL));
+  ASSERT_NE(0, ceph_mount(cmount, "/non-exist"));
+  ceph_shutdown(cmount);
+}
+
+TEST(LibCephFS, MountDouble) {
+
+  struct ceph_mount_info *cmount;
+
+  ASSERT_EQ(0, ceph_create(&cmount, NULL));
+  ASSERT_EQ(0, ceph_conf_read_file(cmount, NULL));
+  ASSERT_EQ(0, ceph_conf_parse_env(cmount, NULL));
+  ASSERT_EQ(0, ceph_mount(cmount, "/"));
+  ASSERT_EQ(-CEPHFS_EISCONN, ceph_mount(cmount, "/"));
+  ceph_shutdown(cmount);
+}
+
+TEST(LibCephFS, MountRemount) {
+
+  struct ceph_mount_info *cmount;
+
+  ASSERT_EQ(0, ceph_create(&cmount, NULL));
+  ASSERT_EQ(0, ceph_conf_read_file(cmount, NULL));
+  ASSERT_EQ(0, ceph_conf_parse_env(cmount, NULL));
+
+  CephContext *cct = ceph_get_mount_context(cmount);
+  ASSERT_EQ(0, ceph_mount(cmount, "/"));
+  ASSERT_EQ(0, ceph_unmount(cmount));
+
+  ASSERT_EQ(0, ceph_mount(cmount, "/"));
+  ASSERT_EQ(cct, ceph_get_mount_context(cmount));
+
+  ceph_shutdown(cmount);
+}
+
+TEST(LibCephFS, UnmountUnmounted) {
+
+  struct ceph_mount_info *cmount;
+
+  ASSERT_EQ(0, ceph_create(&cmount, NULL));
+  ASSERT_EQ(0, ceph_conf_read_file(cmount, NULL));
+  ASSERT_EQ(0, ceph_conf_parse_env(cmount, NULL));
+  ASSERT_EQ(-CEPHFS_ENOTCONN, ceph_unmount(cmount));
+  ceph_shutdown(cmount);
+}
+
+TEST(LibCephFS, ReleaseUnmounted) {
+
+  struct ceph_mount_info *cmount;
+
+  ASSERT_EQ(0, ceph_create(&cmount, NULL));
+  ASSERT_EQ(0, ceph_conf_read_file(cmount, NULL));
+  ASSERT_EQ(0, ceph_conf_parse_env(cmount, NULL));
+  ASSERT_EQ(0, ceph_release(cmount));
+}
+
+TEST(LibCephFS, ReleaseMounted) {
+
+  struct ceph_mount_info *cmount;
+
+  ASSERT_EQ(0, ceph_create(&cmount, NULL));
+  ASSERT_EQ(0, ceph_conf_read_file(cmount, NULL));
+  ASSERT_EQ(0, ceph_conf_parse_env(cmount, NULL));
+  ASSERT_EQ(0, ceph_mount(cmount, "/"));
+  ASSERT_EQ(-CEPHFS_EISCONN, ceph_release(cmount));
+  ASSERT_EQ(0, ceph_unmount(cmount));
+  ASSERT_EQ(0, ceph_release(cmount));
+}
+
+TEST(LibCephFS, UnmountRelease) {
+
+  struct ceph_mount_info *cmount;
+
+  ASSERT_EQ(0, ceph_create(&cmount, NULL));
+  ASSERT_EQ(0, ceph_conf_read_file(cmount, NULL));
+  ASSERT_EQ(0, ceph_conf_parse_env(cmount, NULL));
+  ASSERT_EQ(0, ceph_mount(cmount, "/"));
+  ASSERT_EQ(0, ceph_unmount(cmount));
+  ASSERT_EQ(0, ceph_release(cmount));
+}
+
+TEST(LibCephFS, Mount) {
+  struct ceph_mount_info *cmount;
+  ASSERT_EQ(ceph_create(&cmount, NULL), 0);
+  ASSERT_EQ(ceph_conf_read_file(cmount, NULL), 0);
+  ASSERT_EQ(0, ceph_conf_parse_env(cmount, NULL));
+  ASSERT_EQ(ceph_mount(cmount, NULL), 0);
+  ceph_shutdown(cmount);
+
+  ASSERT_EQ(ceph_create(&cmount, NULL), 0);
+  ASSERT_EQ(ceph_conf_read_file(cmount, NULL), 0);
+  ASSERT_EQ(0, ceph_conf_parse_env(cmount, NULL));
+  ASSERT_EQ(ceph_mount(cmount, NULL), 0);
+  ceph_shutdown(cmount);
+}
+
+TEST(LibCephFS, OpenLayout) {
+  struct ceph_mount_info *cmount;
+  ASSERT_EQ(ceph_create(&cmount, NULL), 0);
+  ASSERT_EQ(ceph_conf_read_file(cmount, NULL), 0);
+  ASSERT_EQ(0, ceph_conf_parse_env(cmount, NULL));
+  ASSERT_EQ(ceph_mount(cmount, NULL), 0);
+
+  /* valid layout */
+  char test_layout_file[256];
+  sprintf(test_layout_file, "test_layout_%d_b", getpid());
+  int fd = ceph_open_layout(cmount, test_layout_file, O_CREAT|O_WRONLY, 0666, (1<<20), 7, (1<<20), NULL);
+  ASSERT_GT(fd, 0);
+  char poolname[80];
+  ASSERT_LT(0, ceph_get_file_pool_name(cmount, fd, poolname, sizeof(poolname)));
+  ASSERT_LT(0, ceph_get_file_pool_name(cmount, fd, poolname, 0));
+
+  /* on already-written file (CEPHFS_ENOTEMPTY) */
+  ceph_write(cmount, fd, "hello world", 11, 0);
+  ceph_close(cmount, fd);
+
+  char xattrk[128];
+  char xattrv[128];
+  sprintf(xattrk, "ceph.file.layout.stripe_unit");
+  sprintf(xattrv, "65536");
+  ASSERT_EQ(-CEPHFS_ENOTEMPTY, ceph_setxattr(cmount, test_layout_file, xattrk, (void *)xattrv, 5, 0));
+
+  /* invalid layout */
+  sprintf(test_layout_file, "test_layout_%d_c", getpid());
+  fd = ceph_open_layout(cmount, test_layout_file, O_CREAT, 0666, (1<<20), 1, 19, NULL);
+  ASSERT_EQ(fd, -CEPHFS_EINVAL);
+
+  /* with data pool */
+  sprintf(test_layout_file, "test_layout_%d_d", getpid());
+  fd = ceph_open_layout(cmount, test_layout_file, O_CREAT, 0666, (1<<20), 7, (1<<20), poolname);
+  ASSERT_GT(fd, 0);
+  ceph_close(cmount, fd);
+
+  /* with metadata pool (invalid) */
+  sprintf(test_layout_file, "test_layout_%d_e", getpid());
+  fd = ceph_open_layout(cmount, test_layout_file, O_CREAT, 0666, (1<<20), 7, (1<<20), "metadata");
+  ASSERT_EQ(fd, -CEPHFS_EINVAL);
+
+  /* with metadata pool (does not exist) */
+  sprintf(test_layout_file, "test_layout_%d_f", getpid());
+  fd = ceph_open_layout(cmount, test_layout_file, O_CREAT, 0666, (1<<20), 7, (1<<20), "asdfjasdfjasdf");
+  ASSERT_EQ(fd, -CEPHFS_EINVAL);
+
+  ceph_shutdown(cmount);
+}
+
+TEST(LibCephFS, DirLs) {
+
+  pid_t mypid = getpid();
+
+  struct ceph_mount_info *cmount;
+  ASSERT_EQ(ceph_create(&cmount, NULL), 0);
+  ASSERT_EQ(ceph_conf_read_file(cmount, NULL), 0);
+  ASSERT_EQ(0, ceph_conf_parse_env(cmount, NULL));
+  ASSERT_EQ(ceph_mount(cmount, "/"), 0);
+
+  struct ceph_dir_result *ls_dir = NULL;
+  char foostr[256];
+  sprintf(foostr, "dir_ls%d", mypid);
+  ASSERT_EQ(ceph_opendir(cmount, foostr, &ls_dir), -CEPHFS_ENOENT);
+
+  ASSERT_EQ(ceph_mkdir(cmount, foostr, 0777), 0);
+  struct ceph_statx stx;
+  ASSERT_EQ(ceph_statx(cmount, foostr, &stx, 0, 0), 0);
+  ASSERT_NE(S_ISDIR(stx.stx_mode), 0);
+
+  char barstr[256];
+  sprintf(barstr, "dir_ls2%d", mypid);
+  ASSERT_EQ(ceph_statx(cmount, barstr, &stx, 0, AT_SYMLINK_NOFOLLOW), -CEPHFS_ENOENT);
+
+  // insert files into directory and test open
+  char bazstr[256];
+  int i = 0, r = rand() % 4096;
+  if (getenv("LIBCEPHFS_RAND")) {
+    r = atoi(getenv("LIBCEPHFS_RAND"));
+  }
+  printf("rand: %d\n", r);
+  for(; i < r; ++i) {
+
+    sprintf(bazstr, "dir_ls%d/dirf%d", mypid, i);
+    int fd  = ceph_open(cmount, bazstr, O_CREAT|O_RDONLY, 0666);
+    ASSERT_GT(fd, 0);
+    ASSERT_EQ(ceph_close(cmount, fd), 0);
+
+    // set file sizes for readdirplus
+    ceph_truncate(cmount, bazstr, i);
+  }
+
+  ASSERT_EQ(ceph_opendir(cmount, foostr, &ls_dir), 0);
+
+  // not guaranteed to get . and .. first, but its a safe assumption in this case
+  struct dirent *result = ceph_readdir(cmount, ls_dir);
+  ASSERT_TRUE(result != NULL);
+  ASSERT_STREQ(result->d_name, ".");
+  result = ceph_readdir(cmount, ls_dir);
+  ASSERT_TRUE(result != NULL);
+  ASSERT_STREQ(result->d_name, "..");
+
+  std::vector<std::string> entries;
+  std::map<std::string, int64_t> offset_map;
+  int64_t offset = ceph_telldir(cmount, ls_dir);
+  for(i = 0; i < r; ++i) {
+    result = ceph_readdir(cmount, ls_dir);
+    ASSERT_TRUE(result != NULL);
+    entries.push_back(result->d_name);
+    offset_map[result->d_name] = offset;
+    offset = ceph_telldir(cmount, ls_dir);
+  }
+
+  ASSERT_TRUE(ceph_readdir(cmount, ls_dir) == NULL);
+  offset = ceph_telldir(cmount, ls_dir);
+
+  ASSERT_EQ(offset_map.size(), entries.size());
+  for(i = 0; i < r; ++i) {
+    sprintf(bazstr, "dirf%d", i);
+    ASSERT_TRUE(offset_map.count(bazstr) == 1);
+  }
+
+  // test seekdir
+  ceph_seekdir(cmount, ls_dir, offset);
+  ASSERT_TRUE(ceph_readdir(cmount, ls_dir) == NULL);
+
+  for (auto p = offset_map.begin(); p != offset_map.end(); ++p) {
+    ceph_seekdir(cmount, ls_dir, p->second);
+    result = ceph_readdir(cmount, ls_dir);
+    ASSERT_TRUE(result != NULL);
+    std::string d_name(result->d_name);
+    ASSERT_EQ(p->first, d_name);
+  }
+
+  // test rewinddir
+  ceph_rewinddir(cmount, ls_dir);
+
+  result = ceph_readdir(cmount, ls_dir);
+  ASSERT_TRUE(result != NULL);
+  ASSERT_STREQ(result->d_name, ".");
+  result = ceph_readdir(cmount, ls_dir);
+  ASSERT_TRUE(result != NULL);
+  ASSERT_STREQ(result->d_name, "..");
+
+  ceph_rewinddir(cmount, ls_dir);
+
+  int t = ceph_telldir(cmount, ls_dir);
+  ASSERT_GT(t, -1);
+
+  ASSERT_TRUE(ceph_readdir(cmount, ls_dir) != NULL);
+
+  // test seekdir - move back to the beginning
+  ceph_seekdir(cmount, ls_dir, t);
+
+  // test getdents
+  struct dirent *getdents_entries;
+  size_t getdents_entries_len = (r + 2) * sizeof(*getdents_entries);
+  getdents_entries = (struct dirent *)malloc(getdents_entries_len);
+
+  int count = 0;
+  std::vector<std::string> found;
+  while (true) {
+    int len = ceph_getdents(cmount, ls_dir, (char *)getdents_entries, getdents_entries_len);
+    if (len == 0)
+      break;
+    ASSERT_GT(len, 0);
+    ASSERT_TRUE((len % sizeof(*getdents_entries)) == 0);
+    int n = len / sizeof(*getdents_entries);
+    int j;
+    if (count == 0) {
+      ASSERT_STREQ(getdents_entries[0].d_name, ".");
+      ASSERT_STREQ(getdents_entries[1].d_name, "..");
+      j = 2;
+    } else {
+      j = 0;
+    }
+    count += n;
+    for(; j < n; ++i, ++j) {
+      const char *name = getdents_entries[j].d_name;
+      found.push_back(name);
+    }
+  }
+  ASSERT_EQ(found, entries);
+  free(getdents_entries);
+
+  // test readdir_r
+  ceph_rewinddir(cmount, ls_dir);
+
+  result = ceph_readdir(cmount, ls_dir);
+  ASSERT_TRUE(result != NULL);
+  ASSERT_STREQ(result->d_name, ".");
+  result = ceph_readdir(cmount, ls_dir);
+  ASSERT_TRUE(result != NULL);
+  ASSERT_STREQ(result->d_name, "..");
+
+  found.clear();
+  while (true) {
+    struct dirent rdent;
+    int len = ceph_readdir_r(cmount, ls_dir, &rdent);
+    if (len == 0)
+      break;
+    ASSERT_EQ(len, 1);
+    found.push_back(rdent.d_name);
+  }
+  ASSERT_EQ(found, entries);
+
+  // test readdirplus
+  ceph_rewinddir(cmount, ls_dir);
+
+  result = ceph_readdir(cmount, ls_dir);
+  ASSERT_TRUE(result != NULL);
+  ASSERT_STREQ(result->d_name, ".");
+  result = ceph_readdir(cmount, ls_dir);
+  ASSERT_TRUE(result != NULL);
+  ASSERT_STREQ(result->d_name, "..");
+
+  found.clear();
+  while (true) {
+    struct dirent rdent;
+    struct ceph_statx stx;
+    int len = ceph_readdirplus_r(cmount, ls_dir, &rdent, &stx,
+				 CEPH_STATX_SIZE, AT_STATX_DONT_SYNC, NULL);
+    if (len == 0)
+      break;
+    ASSERT_EQ(len, 1);
+    const char *name = rdent.d_name;
+    found.push_back(name);
+    int size;
+    sscanf(name, "dirf%d", &size);
+    ASSERT_TRUE(stx.stx_mask & CEPH_STATX_SIZE);
+    ASSERT_EQ(stx.stx_size, (size_t)size);
+    // On Windows, dirent uses long (4B) inodes, which get trimmed
+    // and can't be used.
+    // TODO: consider defining ceph_dirent.
+    #ifndef _WIN32
+    ASSERT_EQ(stx.stx_ino, rdent.d_ino);
+    #endif
+    //ASSERT_EQ(st.st_mode, (mode_t)0666);
+  }
+  ASSERT_EQ(found, entries);
+
+  ASSERT_EQ(ceph_closedir(cmount, ls_dir), 0);
+
+  // cleanup
+  for(i = 0; i < r; ++i) {
+    sprintf(bazstr, "dir_ls%d/dirf%d", mypid, i);
+    ASSERT_EQ(0, ceph_unlink(cmount, bazstr));
+  }
+  ASSERT_EQ(0, ceph_rmdir(cmount, foostr));
+
+  ceph_shutdown(cmount);
+}
+
+TEST(LibCephFS, ManyNestedDirs) {
+  struct ceph_mount_info *cmount;
+  ASSERT_EQ(ceph_create(&cmount, NULL), 0);
+  ASSERT_EQ(ceph_conf_read_file(cmount, NULL), 0);
+  ASSERT_EQ(0, ceph_conf_parse_env(cmount, NULL));
+  ASSERT_EQ(ceph_mount(cmount, NULL), 0);
+
+  const char *many_path = "a/a/a/a/a/a/a/a/a/a/a/a/a/a/a/a/a/a/a/a/a/a/a/a/a/a/a/a/a/a/a/a/a/a/a/a/a/a/a/a/a/a";
+  ASSERT_EQ(ceph_mkdirs(cmount, many_path, 0755), 0);
+
+  int i = 0;
+
+  for(; i < 39; ++i) {
+    ASSERT_EQ(ceph_chdir(cmount, "a"), 0);
+
+    struct ceph_dir_result *dirp;
+    ASSERT_EQ(ceph_opendir(cmount, "a", &dirp), 0);
+    struct dirent *dent = ceph_readdir(cmount, dirp);
+    ASSERT_TRUE(dent != NULL);
+    ASSERT_STREQ(dent->d_name, ".");
+    dent = ceph_readdir(cmount, dirp);
+    ASSERT_TRUE(dent != NULL);
+    ASSERT_STREQ(dent->d_name, "..");
+    dent = ceph_readdir(cmount, dirp);
+    ASSERT_TRUE(dent != NULL);
+    ASSERT_STREQ(dent->d_name, "a");
+    ASSERT_EQ(ceph_closedir(cmount, dirp), 0);
+  }
+
+  ASSERT_STREQ(ceph_getcwd(cmount), "/a/a/a/a/a/a/a/a/a/a/a/a/a/a/a/a/a/a/a/a/a/a/a/a/a/a/a/a/a/a/a/a/a/a/a/a/a/a/a");
+
+  ASSERT_EQ(ceph_chdir(cmount, "a/a/a"), 0);
+
+  for(i = 0; i < 39; ++i) {
+    ASSERT_EQ(ceph_chdir(cmount, ".."), 0);
+    ASSERT_EQ(ceph_rmdir(cmount, "a"), 0);
+  }
+
+  ASSERT_EQ(ceph_chdir(cmount, "/"), 0);
+
+  ASSERT_EQ(ceph_rmdir(cmount, "a/a/a"), 0);
+
+  ceph_shutdown(cmount);
+}
+
+TEST(LibCephFS, Xattrs) {
+  struct ceph_mount_info *cmount;
+  ASSERT_EQ(ceph_create(&cmount, NULL), 0);
+  ASSERT_EQ(ceph_conf_read_file(cmount, NULL), 0);
+  ASSERT_EQ(0, ceph_conf_parse_env(cmount, NULL));
+  ASSERT_EQ(ceph_mount(cmount, NULL), 0);
+
+  char test_xattr_file[256];
+  sprintf(test_xattr_file, "test_xattr_%d", getpid());
+  int fd = ceph_open(cmount, test_xattr_file, O_CREAT, 0666);
+  ASSERT_GT(fd, 0);
+
+  // test removing non-existent xattr
+  ASSERT_EQ(-CEPHFS_ENODATA, ceph_removexattr(cmount, test_xattr_file, "user.nosuchxattr"));
+
+  char i = 'a';
+  char xattrk[128];
+  char xattrv[128];
+  for(; i < 'a'+26; ++i) {
+    sprintf(xattrk, "user.test_xattr_%c", i);
+    int len = sprintf(xattrv, "testxattr%c", i);
+    ASSERT_EQ(ceph_setxattr(cmount, test_xattr_file, xattrk, (void *) xattrv, len, XATTR_CREATE), 0);
+  }
+
+  // zero size should return required buffer length
+  int len_needed = ceph_listxattr(cmount, test_xattr_file, NULL, 0);
+  ASSERT_GT(len_needed, 0);
+
+  // buffer size smaller than needed should fail
+  char xattrlist[128*26];
+  ASSERT_GT(sizeof(xattrlist), (size_t)len_needed);
+  int len = ceph_listxattr(cmount, test_xattr_file, xattrlist, len_needed - 1);
+  ASSERT_EQ(-CEPHFS_ERANGE, len);
+
+  len = ceph_listxattr(cmount, test_xattr_file, xattrlist, sizeof(xattrlist));
+  ASSERT_EQ(len, len_needed);
+  char *p = xattrlist;
+  char *n;
+  i = 'a';
+  while (len > 0) {
+    // ceph.* xattrs should not be listed
+    ASSERT_NE(strncmp(p, "ceph.", 5), 0);
+
+    sprintf(xattrk, "user.test_xattr_%c", i);
+    ASSERT_STREQ(p, xattrk);
+
+    char gxattrv[128];
+    std::cout << "getting attr " << p << std::endl;
+    int alen = ceph_getxattr(cmount, test_xattr_file, p, (void *) gxattrv, 128);
+    ASSERT_GT(alen, 0);
+    sprintf(xattrv, "testxattr%c", i);
+    ASSERT_TRUE(!strncmp(xattrv, gxattrv, alen));
+
+    n = strchr(p, '\0');
+    n++;
+    len -= (n - p);
+    p = n;
+    ++i;
+  }
+
+  i = 'a';
+  for(i = 'a'; i < 'a'+26; ++i) {
+    sprintf(xattrk, "user.test_xattr_%c", i);
+    ASSERT_EQ(ceph_removexattr(cmount, test_xattr_file, xattrk), 0);
+  }
+
+  ceph_close(cmount, fd);
+  ceph_shutdown(cmount);
+
+}
+
+TEST(LibCephFS, Xattrs_ll) {
+  struct ceph_mount_info *cmount;
+  ASSERT_EQ(ceph_create(&cmount, NULL), 0);
+  ASSERT_EQ(ceph_conf_read_file(cmount, NULL), 0);
+  ASSERT_EQ(0, ceph_conf_parse_env(cmount, NULL));
+  ASSERT_EQ(ceph_mount(cmount, NULL), 0);
+
+  char test_xattr_file[256];
+  sprintf(test_xattr_file, "test_xattr_%d", getpid());
+  int fd = ceph_open(cmount, test_xattr_file, O_CREAT, 0666);
+  ASSERT_GT(fd, 0);
+  ceph_close(cmount, fd);
+
+  Inode *root = NULL;
+  Inode *existent_file_handle = NULL;
+
+  int res = ceph_ll_lookup_root(cmount, &root);
+  ASSERT_EQ(res, 0);
+
+  UserPerm *perms = ceph_mount_perms(cmount);
+  struct ceph_statx stx;
+
+  res = ceph_ll_lookup(cmount, root, test_xattr_file, &existent_file_handle,
+		       &stx, 0, 0, perms);
+  ASSERT_EQ(res, 0);
+
+  const char *valid_name = "user.attrname";
+  const char *value = "attrvalue";
+  char value_buf[256] = { 0 };
+
+  res = ceph_ll_setxattr(cmount, existent_file_handle, valid_name, value, strlen(value), 0, perms);
+  ASSERT_EQ(res, 0);
+
+  res = ceph_ll_getxattr(cmount, existent_file_handle, valid_name, value_buf, 256, perms);
+  ASSERT_EQ(res, (int)strlen(value));
+
+  value_buf[res] = '\0';
+  ASSERT_STREQ(value_buf, value);
+
+  ceph_shutdown(cmount);
+}
+
+TEST(LibCephFS, LstatSlashdot) {
+  struct ceph_mount_info *cmount;
+  ASSERT_EQ(ceph_create(&cmount, NULL), 0);
+  ASSERT_EQ(ceph_conf_read_file(cmount, NULL), 0);
+  ASSERT_EQ(0, ceph_conf_parse_env(cmount, NULL));
+  ASSERT_EQ(ceph_mount(cmount, NULL), 0);
+
+  struct ceph_statx stx;
+  ASSERT_EQ(ceph_statx(cmount, "/.", &stx, 0, AT_SYMLINK_NOFOLLOW), 0);
+  ASSERT_EQ(ceph_statx(cmount, ".", &stx, 0, AT_SYMLINK_NOFOLLOW), 0);
+
+  ceph_shutdown(cmount);
+}
+
+TEST(LibCephFS, StatDirNlink) {
+  struct ceph_mount_info *cmount;
+  ASSERT_EQ(ceph_create(&cmount, NULL), 0);
+  ASSERT_EQ(ceph_conf_read_file(cmount, NULL), 0);
+  ASSERT_EQ(0, ceph_conf_parse_env(cmount, NULL));
+  ASSERT_EQ(ceph_mount(cmount, NULL), 0);
+
+  char test_dir1[256];
+  sprintf(test_dir1, "dir1_symlinks_%d", getpid());
+  ASSERT_EQ(ceph_mkdir(cmount, test_dir1, 0700), 0);
+
+  int fd = ceph_open(cmount, test_dir1, O_DIRECTORY|O_RDONLY, 0);
+  ASSERT_GT(fd, 0);
+  struct ceph_statx stx;
+  ASSERT_EQ(ceph_fstatx(cmount, fd, &stx, CEPH_STATX_NLINK, AT_SYMLINK_NOFOLLOW), 0);
+  ASSERT_EQ(stx.stx_nlink, 2u);
+
+  {
+    char test_dir2[296];
+    sprintf(test_dir2, "%s/.", test_dir1);
+    ASSERT_EQ(ceph_statx(cmount, test_dir2, &stx, CEPH_STATX_NLINK, AT_SYMLINK_NOFOLLOW), 0);
+    ASSERT_EQ(stx.stx_nlink, 2u);
+  }
+
+  {
+    char test_dir2[296];
+    sprintf(test_dir2, "%s/1", test_dir1);
+    ASSERT_EQ(ceph_mkdir(cmount, test_dir2, 0700), 0);
+    ASSERT_EQ(ceph_statx(cmount, test_dir2, &stx, CEPH_STATX_NLINK, AT_SYMLINK_NOFOLLOW), 0);
+    ASSERT_EQ(stx.stx_nlink, 2u);
+      ASSERT_EQ(ceph_statx(cmount, test_dir1, &stx, CEPH_STATX_NLINK, AT_SYMLINK_NOFOLLOW), 0);
+      ASSERT_EQ(stx.stx_nlink, 3u);
+    sprintf(test_dir2, "%s/2", test_dir1);
+    ASSERT_EQ(ceph_mkdir(cmount, test_dir2, 0700), 0);
+      ASSERT_EQ(ceph_statx(cmount, test_dir1, &stx, CEPH_STATX_NLINK, AT_SYMLINK_NOFOLLOW), 0);
+      ASSERT_EQ(stx.stx_nlink, 4u);
+    sprintf(test_dir2, "%s/1/1", test_dir1);
+    ASSERT_EQ(ceph_mkdir(cmount, test_dir2, 0700), 0);
+      ASSERT_EQ(ceph_statx(cmount, test_dir1, &stx, CEPH_STATX_NLINK, AT_SYMLINK_NOFOLLOW), 0);
+      ASSERT_EQ(stx.stx_nlink, 4u);
+    ASSERT_EQ(ceph_rmdir(cmount, test_dir2), 0);
+      ASSERT_EQ(ceph_statx(cmount, test_dir1, &stx, CEPH_STATX_NLINK, AT_SYMLINK_NOFOLLOW), 0);
+      ASSERT_EQ(stx.stx_nlink, 4u);
+    sprintf(test_dir2, "%s/1", test_dir1);
+    ASSERT_EQ(ceph_rmdir(cmount, test_dir2), 0);
+      ASSERT_EQ(ceph_statx(cmount, test_dir1, &stx, CEPH_STATX_NLINK, AT_SYMLINK_NOFOLLOW), 0);
+      ASSERT_EQ(stx.stx_nlink, 3u);
+    sprintf(test_dir2, "%s/2", test_dir1);
+    ASSERT_EQ(ceph_rmdir(cmount, test_dir2), 0);
+      ASSERT_EQ(ceph_statx(cmount, test_dir1, &stx, CEPH_STATX_NLINK, AT_SYMLINK_NOFOLLOW), 0);
+      ASSERT_EQ(stx.stx_nlink, 2u);
+  }
+
+  ASSERT_EQ(ceph_rmdir(cmount, test_dir1), 0);
+  ASSERT_EQ(ceph_fstatx(cmount, fd, &stx, CEPH_STATX_NLINK, AT_SYMLINK_NOFOLLOW), 0);
+  ASSERT_EQ(stx.stx_nlink, 0u);
+
+  ceph_close(cmount, fd);
+
+  ceph_shutdown(cmount);
+}
+
+TEST(LibCephFS, DoubleChmod) {
+
+  struct ceph_mount_info *cmount;
+  ASSERT_EQ(ceph_create(&cmount, NULL), 0);
+  ASSERT_EQ(ceph_conf_read_file(cmount, NULL), 0);
+  ASSERT_EQ(0, ceph_conf_parse_env(cmount, NULL));
+  ASSERT_EQ(ceph_mount(cmount, NULL), 0);
+
+  char test_file[256];
+  sprintf(test_file, "test_perms_%d", getpid());
+
+  int fd = ceph_open(cmount, test_file, O_CREAT|O_RDWR, 0666);
+  ASSERT_GT(fd, 0);
+
+  // write some stuff
+  const char *bytes = "foobarbaz";
+  ASSERT_EQ(ceph_write(cmount, fd, bytes, strlen(bytes), 0), (int)strlen(bytes));
+
+  ceph_close(cmount, fd);
+
+  // set perms to read but can't write
+  ASSERT_EQ(ceph_chmod(cmount, test_file, 0400), 0);
+
+  fd = ceph_open(cmount, test_file, O_RDWR, 0);
+  ASSERT_EQ(fd, -CEPHFS_EACCES);
+
+  fd = ceph_open(cmount, test_file, O_RDONLY, 0);
+  ASSERT_GT(fd, -1);
+
+  char buf[100];
+  int ret = ceph_read(cmount, fd, buf, 100, 0);
+  ASSERT_EQ(ret, (int)strlen(bytes));
+  buf[ret] = '\0';
+  ASSERT_STREQ(buf, bytes);
+
+  ASSERT_EQ(ceph_write(cmount, fd, bytes, strlen(bytes), 0), -CEPHFS_EBADF);
+
+  ceph_close(cmount, fd);
+
+  // reset back to writeable
+  ASSERT_EQ(ceph_chmod(cmount, test_file, 0600), 0);
+
+  // ensure perms are correct
+  struct ceph_statx stx;
+  ASSERT_EQ(ceph_statx(cmount, test_file, &stx, CEPH_STATX_MODE, AT_SYMLINK_NOFOLLOW), 0);
+  ASSERT_EQ(stx.stx_mode, 0100600U);
+
+  fd = ceph_open(cmount, test_file, O_RDWR, 0);
+  ASSERT_GT(fd, 0);
+
+  ASSERT_EQ(ceph_write(cmount, fd, bytes, strlen(bytes), 0), (int)strlen(bytes));
+  ceph_close(cmount, fd);
+
+  ceph_shutdown(cmount);
+}
+
+TEST(LibCephFS, Fchmod) {
+  struct ceph_mount_info *cmount;
+  ASSERT_EQ(ceph_create(&cmount, NULL), 0);
+  ASSERT_EQ(ceph_conf_read_file(cmount, NULL), 0);
+  ASSERT_EQ(0, ceph_conf_parse_env(cmount, NULL));
+  ASSERT_EQ(ceph_mount(cmount, NULL), 0);
+
+  char test_file[256];
+  sprintf(test_file, "test_perms_%d", getpid());
+
+  int fd = ceph_open(cmount, test_file, O_CREAT|O_RDWR, 0666);
+  ASSERT_GT(fd, 0);
+
+  // write some stuff
+  const char *bytes = "foobarbaz";
+  ASSERT_EQ(ceph_write(cmount, fd, bytes, strlen(bytes), 0), (int)strlen(bytes));
+
+  // set perms to read but can't write
+  ASSERT_EQ(ceph_fchmod(cmount, fd, 0400), 0);
+
+  char buf[100];
+  int ret = ceph_read(cmount, fd, buf, 100, 0);
+  ASSERT_EQ(ret, (int)strlen(bytes));
+  buf[ret] = '\0';
+  ASSERT_STREQ(buf, bytes);
+
+  ASSERT_EQ(ceph_write(cmount, fd, bytes, strlen(bytes), 0), (int)strlen(bytes));
+
+  ceph_close(cmount, fd);
+
+  ASSERT_EQ(ceph_open(cmount, test_file, O_RDWR, 0), -CEPHFS_EACCES);
+
+  // reset back to writeable
+  ASSERT_EQ(ceph_chmod(cmount, test_file, 0600), 0);
+
+  fd = ceph_open(cmount, test_file, O_RDWR, 0);
+  ASSERT_GT(fd, 0);
+
+  ASSERT_EQ(ceph_write(cmount, fd, bytes, strlen(bytes), 0), (int)strlen(bytes));
+  ceph_close(cmount, fd);
+
+  ceph_shutdown(cmount);
+}
+
+TEST(LibCephFS, Lchmod) {
+  struct ceph_mount_info *cmount;
+  ASSERT_EQ(ceph_create(&cmount, NULL), 0);
+  ASSERT_EQ(ceph_conf_read_file(cmount, NULL), 0);
+  ASSERT_EQ(0, ceph_conf_parse_env(cmount, NULL));
+  ASSERT_EQ(ceph_mount(cmount, NULL), 0);
+
+  char test_file[256];
+  sprintf(test_file, "test_perms_lchmod_%d", getpid());
+
+  int fd = ceph_open(cmount, test_file, O_CREAT|O_RDWR, 0666);
+  ASSERT_GT(fd, 0);
+
+  // write some stuff
+  const char *bytes = "foobarbaz";
+  ASSERT_EQ(ceph_write(cmount, fd, bytes, strlen(bytes), 0), (int)strlen(bytes));
+  ceph_close(cmount, fd);
+
+  // Create symlink
+  char test_symlink[256];
+  sprintf(test_symlink, "test_lchmod_sym_%d", getpid());
+  ASSERT_EQ(ceph_symlink(cmount, test_file, test_symlink), 0);
+
+  // get symlink stat - lstat
+  struct ceph_statx stx_orig1;
+  ASSERT_EQ(ceph_statx(cmount, test_symlink, &stx_orig1, CEPH_STATX_ALL_STATS, AT_SYMLINK_NOFOLLOW), 0);
+
+  // Change mode on symlink file
+  ASSERT_EQ(ceph_lchmod(cmount, test_symlink, 0400), 0);
+  struct ceph_statx stx_orig2;
+  ASSERT_EQ(ceph_statx(cmount, test_symlink, &stx_orig2, CEPH_STATX_ALL_STATS, AT_SYMLINK_NOFOLLOW), 0);
+
+  // Compare modes
+  ASSERT_NE(stx_orig1.stx_mode, stx_orig2.stx_mode);
+  static const int permbits = S_IRWXU|S_IRWXG|S_IRWXO;
+  ASSERT_EQ(permbits&stx_orig1.stx_mode, 0777);
+  ASSERT_EQ(permbits&stx_orig2.stx_mode, 0400);
+
+  ceph_shutdown(cmount);
+}
+
+TEST(LibCephFS, Fchown) {
+  struct ceph_mount_info *cmount;
+  ASSERT_EQ(ceph_create(&cmount, NULL), 0);
+  ASSERT_EQ(ceph_conf_read_file(cmount, NULL), 0);
+  ASSERT_EQ(0, ceph_conf_parse_env(cmount, NULL));
+  ASSERT_EQ(ceph_mount(cmount, NULL), 0);
+
+  char test_file[256];
+  sprintf(test_file, "test_fchown_%d", getpid());
+
+  int fd = ceph_open(cmount, test_file, O_CREAT|O_RDWR, 0666);
+  ASSERT_GT(fd, 0);
+
+  // set perms to readable and writeable only by owner
+  ASSERT_EQ(ceph_fchmod(cmount, fd, 0600), 0);
+
+  // change ownership to nobody -- we assume nobody exists and id is always 65534
+  ASSERT_EQ(ceph_conf_set(cmount, "client_permissions", "0"), 0);
+  ASSERT_EQ(ceph_fchown(cmount, fd, 65534, 65534), 0);
+  ASSERT_EQ(ceph_conf_set(cmount, "client_permissions", "1"), 0);
+
+  ceph_close(cmount, fd);
+
+  // "nobody" will be ignored on Windows
+  #ifndef _WIN32
+  fd = ceph_open(cmount, test_file, O_RDWR, 0);
+  ASSERT_EQ(fd, -CEPHFS_EACCES);
+  #endif
+
+  ceph_shutdown(cmount);
+}
+
+#if defined(__linux__) && defined(O_PATH)
+TEST(LibCephFS, FlagO_PATH) {
+  struct ceph_mount_info *cmount;
+
+  ASSERT_EQ(0, ceph_create(&cmount, NULL));
+  ASSERT_EQ(0, ceph_conf_read_file(cmount, NULL));
+  ASSERT_EQ(0, ceph_conf_parse_env(cmount, NULL));
+  ASSERT_EQ(0, ceph_mount(cmount, NULL));
+
+  char test_file[PATH_MAX];
+  sprintf(test_file, "test_oflag_%d", getpid());
+
+  int fd = ceph_open(cmount, test_file, O_CREAT|O_RDWR|O_PATH, 0666);
+  ASSERT_EQ(-CEPHFS_ENOENT, fd);
+
+  fd = ceph_open(cmount, test_file, O_CREAT|O_RDWR, 0666);
+  ASSERT_GT(fd, 0);
+  ASSERT_EQ(0, ceph_close(cmount, fd));
+
+  // ok, the file has been created. perform real checks now
+  fd = ceph_open(cmount, test_file, O_CREAT|O_RDWR|O_PATH, 0666);
+  ASSERT_GT(fd, 0);
+
+  char buf[128];
+  ASSERT_EQ(-CEPHFS_EBADF, ceph_read(cmount, fd, buf, sizeof(buf), 0));
+  ASSERT_EQ(-CEPHFS_EBADF, ceph_write(cmount, fd, buf, sizeof(buf), 0));
+
+  // set perms to readable and writeable only by owner
+  ASSERT_EQ(-CEPHFS_EBADF, ceph_fchmod(cmount, fd, 0600));
+
+  // change ownership to nobody -- we assume nobody exists and id is always 65534
+  ASSERT_EQ(-CEPHFS_EBADF, ceph_fchown(cmount, fd, 65534, 65534));
+
+  // try to sync
+  ASSERT_EQ(-CEPHFS_EBADF, ceph_fsync(cmount, fd, false));
+
+  struct ceph_statx stx;
+  ASSERT_EQ(0, ceph_fstatx(cmount, fd, &stx, 0, 0));
+
+  ASSERT_EQ(0, ceph_close(cmount, fd));
+  ceph_shutdown(cmount);
+}
+#endif /* __linux */
+
+TEST(LibCephFS, Symlinks) {
+  struct ceph_mount_info *cmount;
+  ASSERT_EQ(ceph_create(&cmount, NULL), 0);
+  ASSERT_EQ(ceph_conf_read_file(cmount, NULL), 0);
+  ASSERT_EQ(0, ceph_conf_parse_env(cmount, NULL));
+  ASSERT_EQ(ceph_mount(cmount, NULL), 0);
+
+  char test_file[256];
+  sprintf(test_file, "test_symlinks_%d", getpid());
+
+  int fd = ceph_open(cmount, test_file, O_CREAT|O_RDWR, 0666);
+  ASSERT_GT(fd, 0);
+
+  ceph_close(cmount, fd);
+
+  char test_symlink[256];
+  sprintf(test_symlink, "test_symlinks_sym_%d", getpid());
+
+  ASSERT_EQ(ceph_symlink(cmount, test_file, test_symlink), 0);
+
+  // test the O_NOFOLLOW case
+  fd = ceph_open(cmount, test_symlink, O_NOFOLLOW, 0);
+  ASSERT_EQ(fd, -CEPHFS_ELOOP);
+
+  // stat the original file
+  struct ceph_statx stx_orig;
+  ASSERT_EQ(ceph_statx(cmount, test_file, &stx_orig, CEPH_STATX_ALL_STATS, 0), 0);
+  // stat the symlink
+  struct ceph_statx stx_symlink_orig;
+  ASSERT_EQ(ceph_statx(cmount, test_symlink, &stx_symlink_orig, CEPH_STATX_ALL_STATS, 0), 0);
+  // ensure the statx bufs are equal
+  ASSERT_EQ(memcmp(&stx_orig, &stx_symlink_orig, sizeof(stx_orig)), 0);
+
+  sprintf(test_file, "/test_symlinks_abs_%d", getpid());
+
+  fd = ceph_open(cmount, test_file, O_CREAT|O_RDWR, 0666);
+  ASSERT_GT(fd, 0);
+
+  ceph_close(cmount, fd);
+
+  sprintf(test_symlink, "/test_symlinks_abs_sym_%d", getpid());
+
+  ASSERT_EQ(ceph_symlink(cmount, test_file, test_symlink), 0);
+
+  // stat the original file
+  ASSERT_EQ(ceph_statx(cmount, test_file, &stx_orig, CEPH_STATX_ALL_STATS, 0), 0);
+  // stat the symlink
+  ASSERT_EQ(ceph_statx(cmount, test_symlink, &stx_symlink_orig, CEPH_STATX_ALL_STATS, 0), 0);
+  // ensure the statx bufs are equal
+  ASSERT_TRUE(!memcmp(&stx_orig, &stx_symlink_orig, sizeof(stx_orig)));
+
+  // test lstat
+  ASSERT_EQ(ceph_statx(cmount, test_symlink, &stx_orig, CEPH_STATX_ALL_STATS, AT_SYMLINK_NOFOLLOW), 0);
+  ASSERT_TRUE(S_ISLNK(stx_orig.stx_mode));
+
+  ceph_shutdown(cmount);
+}
+
+TEST(LibCephFS, DirSyms) {
+  struct ceph_mount_info *cmount;
+  ASSERT_EQ(ceph_create(&cmount, NULL), 0);
+  ASSERT_EQ(ceph_conf_read_file(cmount, NULL), 0);
+  ASSERT_EQ(0, ceph_conf_parse_env(cmount, NULL));
+  ASSERT_EQ(ceph_mount(cmount, NULL), 0);
+
+  char test_dir1[256];
+  sprintf(test_dir1, "dir1_symlinks_%d", getpid());
+
+  ASSERT_EQ(ceph_mkdir(cmount, test_dir1, 0700), 0);
+
+  char test_symdir[256];
+  sprintf(test_symdir, "symdir_symlinks_%d", getpid());
+
+  ASSERT_EQ(ceph_symlink(cmount, test_dir1, test_symdir), 0);
+
+  char test_file[256];
+  sprintf(test_file, "/symdir_symlinks_%d/test_symdir_file", getpid());
+  int fd = ceph_open(cmount, test_file, O_CREAT|O_RDWR, 0600);
+  ASSERT_GT(fd, 0);
+  ceph_close(cmount, fd);
+
+  struct ceph_statx stx;
+  ASSERT_EQ(ceph_statx(cmount, test_file, &stx, 0, AT_SYMLINK_NOFOLLOW), 0);
+
+  // ensure that its a file not a directory we get back
+  ASSERT_TRUE(S_ISREG(stx.stx_mode));
+
+  ceph_shutdown(cmount);
+}
+
+TEST(LibCephFS, LoopSyms) {
+  struct ceph_mount_info *cmount;
+  ASSERT_EQ(ceph_create(&cmount, NULL), 0);
+  ASSERT_EQ(ceph_conf_read_file(cmount, NULL), 0);
+  ASSERT_EQ(0, ceph_conf_parse_env(cmount, NULL));
+  ASSERT_EQ(ceph_mount(cmount, NULL), 0);
+
+  char test_dir1[256];
+  sprintf(test_dir1, "dir1_loopsym_%d", getpid());
+
+  ASSERT_EQ(ceph_mkdir(cmount, test_dir1, 0700), 0);
+
+  char test_dir2[256];
+  sprintf(test_dir2, "/dir1_loopsym_%d/loop_dir", getpid());
+
+  ASSERT_EQ(ceph_mkdir(cmount, test_dir2, 0700), 0);
+
+  // symlink it itself:  /path/to/mysym -> /path/to/mysym
+  char test_symdir[256];
+  sprintf(test_symdir, "/dir1_loopsym_%d/loop_dir/symdir", getpid());
+
+  ASSERT_EQ(ceph_symlink(cmount, test_symdir, test_symdir), 0);
+
+  char test_file[256];
+  sprintf(test_file, "/dir1_loopsym_%d/loop_dir/symdir/test_loopsym_file", getpid());
+  int fd = ceph_open(cmount, test_file, O_CREAT|O_RDWR, 0600);
+  ASSERT_EQ(fd, -CEPHFS_ELOOP);
+
+  // loop: /a -> /b, /b -> /c, /c -> /a
+  char a[264], b[264], c[264];
+  sprintf(a, "/%s/a", test_dir1);
+  sprintf(b, "/%s/b", test_dir1);
+  sprintf(c, "/%s/c", test_dir1);
+  ASSERT_EQ(ceph_symlink(cmount, a, b), 0);
+  ASSERT_EQ(ceph_symlink(cmount, b, c), 0);
+  ASSERT_EQ(ceph_symlink(cmount, c, a), 0);
+  ASSERT_EQ(ceph_open(cmount, a, O_RDWR, 0), -CEPHFS_ELOOP);
+
+  ceph_shutdown(cmount);
+}
+
+TEST(LibCephFS, HardlinkNoOriginal) {
+
+  int mypid = getpid();
+
+  struct ceph_mount_info *cmount;
+  ASSERT_EQ(ceph_create(&cmount, NULL), 0);
+  ASSERT_EQ(ceph_conf_read_file(cmount, NULL), 0);
+  ASSERT_EQ(0, ceph_conf_parse_env(cmount, NULL));
+  ASSERT_EQ(ceph_mount(cmount, NULL), 0);
+
+  char dir[256];
+  sprintf(dir, "/test_rmdirfail%d", mypid);
+  ASSERT_EQ(ceph_mkdir(cmount, dir, 0777), 0);
+
+  ASSERT_EQ(ceph_chdir(cmount, dir), 0);
+
+  int fd = ceph_open(cmount, "f1", O_CREAT, 0644);
+  ASSERT_GT(fd, 0);
+
+  ceph_close(cmount, fd);
+
+  // create hard link
+  ASSERT_EQ(ceph_link(cmount, "f1", "hardl1"), 0);
+
+  // remove file link points to
+  ASSERT_EQ(ceph_unlink(cmount, "f1"), 0);
+
+  ceph_shutdown(cmount);
+
+  // now cleanup
+  ASSERT_EQ(ceph_create(&cmount, NULL), 0);
+  ASSERT_EQ(ceph_conf_read_file(cmount, NULL), 0);
+  ASSERT_EQ(0, ceph_conf_parse_env(cmount, NULL));
+  ASSERT_EQ(ceph_mount(cmount, NULL), 0);
+  ASSERT_EQ(ceph_chdir(cmount, dir), 0);
+  ASSERT_EQ(ceph_unlink(cmount, "hardl1"), 0);
+  ASSERT_EQ(ceph_rmdir(cmount, dir), 0);
+
+  ceph_shutdown(cmount);
+}
+
+TEST(LibCephFS, BadArgument) {
+  struct ceph_mount_info *cmount;
+  ASSERT_EQ(ceph_create(&cmount, NULL), 0);
+  ASSERT_EQ(ceph_conf_read_file(cmount, NULL), 0);
+  ASSERT_EQ(0, ceph_conf_parse_env(cmount, NULL));
+  ASSERT_EQ(ceph_mount(cmount, NULL), 0);
+
+  int fd = ceph_open(cmount, "test_file", O_CREAT|O_RDWR, 0666);
+  ASSERT_GT(fd, 0);
+  char buf[100];
+  ASSERT_EQ(ceph_write(cmount, fd, buf, sizeof(buf), 0), (int)sizeof(buf));
+  ASSERT_EQ(ceph_read(cmount, fd, buf, 0, 5), 0);
+  ceph_close(cmount, fd);
+  ASSERT_EQ(ceph_unlink(cmount, "test_file"), 0);
+
+  ceph_shutdown(cmount);
+}
+
+TEST(LibCephFS, BadFileDesc) {
+  struct ceph_mount_info *cmount;
+  ASSERT_EQ(ceph_create(&cmount, NULL), 0);
+  ASSERT_EQ(ceph_conf_read_file(cmount, NULL), 0);
+  ASSERT_EQ(0, ceph_conf_parse_env(cmount, NULL));
+  ASSERT_EQ(ceph_mount(cmount, NULL), 0);
+
+  ASSERT_EQ(ceph_fchmod(cmount, -1, 0655), -CEPHFS_EBADF);
+  ASSERT_EQ(ceph_close(cmount, -1), -CEPHFS_EBADF);
+  ASSERT_EQ(ceph_lseek(cmount, -1, 0, SEEK_SET), -CEPHFS_EBADF);
+
+  char buf[0];
+  ASSERT_EQ(ceph_read(cmount, -1, buf, 0, 0), -CEPHFS_EBADF);
+  ASSERT_EQ(ceph_write(cmount, -1, buf, 0, 0), -CEPHFS_EBADF);
+
+  ASSERT_EQ(ceph_ftruncate(cmount, -1, 0), -CEPHFS_EBADF);
+  ASSERT_EQ(ceph_fsync(cmount, -1, 0), -CEPHFS_EBADF);
+
+  struct ceph_statx stx;
+  ASSERT_EQ(ceph_fstatx(cmount, -1, &stx, 0, 0), -CEPHFS_EBADF);
+
+  struct sockaddr_storage addr;
+  ASSERT_EQ(ceph_get_file_stripe_address(cmount, -1, 0, &addr, 1), -CEPHFS_EBADF);
+
+  ASSERT_EQ(ceph_get_file_stripe_unit(cmount, -1), -CEPHFS_EBADF);
+  ASSERT_EQ(ceph_get_file_pool(cmount, -1), -CEPHFS_EBADF);
+  char poolname[80];
+  ASSERT_EQ(ceph_get_file_pool_name(cmount, -1, poolname, sizeof(poolname)), -CEPHFS_EBADF);
+  ASSERT_EQ(ceph_get_file_replication(cmount, -1), -CEPHFS_EBADF);
+  ASSERT_EQ(ceph_get_file_object_size(cmount, -1), -CEPHFS_EBADF);
+  int stripe_unit, stripe_count, object_size, pg_pool;
+  ASSERT_EQ(ceph_get_file_layout(cmount, -1, &stripe_unit, &stripe_count, &object_size, &pg_pool), -CEPHFS_EBADF);
+  ASSERT_EQ(ceph_get_file_stripe_count(cmount, -1), -CEPHFS_EBADF);
+
+  ceph_shutdown(cmount);
+}
+
+TEST(LibCephFS, ReadEmptyFile) {
+  struct ceph_mount_info *cmount;
+  ASSERT_EQ(ceph_create(&cmount, NULL), 0);
+  ASSERT_EQ(ceph_conf_read_file(cmount, NULL), 0);
+  ASSERT_EQ(0, ceph_conf_parse_env(cmount, NULL));
+  ASSERT_EQ(ceph_mount(cmount, NULL), 0);
+
+  // test the read_sync path in the client for zero files
+  ASSERT_EQ(ceph_conf_set(cmount, "client_debug_force_sync_read", "true"), 0);
+
+  int mypid = getpid();
+  char testf[256];
+
+  sprintf(testf, "test_reademptyfile%d", mypid);
+  int fd = ceph_open(cmount, testf, O_CREAT|O_TRUNC|O_WRONLY, 0644);
+  ASSERT_GT(fd, 0);
+
+  ceph_close(cmount, fd);
+
+  fd = ceph_open(cmount, testf, O_RDONLY, 0);
+  ASSERT_GT(fd, 0);
+
+  char buf[4096];
+  ASSERT_EQ(ceph_read(cmount, fd, buf, 4096, 0), 0);
+
+  ceph_close(cmount, fd);
+  ceph_shutdown(cmount);
+}
+
+TEST(LibCephFS, PreadvPwritev) {
+  struct ceph_mount_info *cmount;
+  ASSERT_EQ(ceph_create(&cmount, NULL), 0);
+  ASSERT_EQ(ceph_conf_read_file(cmount, NULL), 0);
+  ASSERT_EQ(0, ceph_conf_parse_env(cmount, NULL));
+  ASSERT_EQ(ceph_mount(cmount, NULL), 0);
+
+  int mypid = getpid();
+  char testf[256];
+
+  sprintf(testf, "test_preadvpwritevfile%d", mypid);
+  int fd = ceph_open(cmount, testf, O_CREAT|O_RDWR, 0666);
+  ASSERT_GT(fd, 0);
+
+  char out0[] = "hello ";
+  char out1[] = "world\n";
+  struct iovec iov_out[2] = {
+	{out0, sizeof(out0)},
+	{out1, sizeof(out1)},
+  };
+  char in0[sizeof(out0)];
+  char in1[sizeof(out1)];
+  struct iovec iov_in[2] = {
+	{in0, sizeof(in0)},
+	{in1, sizeof(in1)},
+  };
+  ssize_t nwritten = iov_out[0].iov_len + iov_out[1].iov_len; 
+  ssize_t nread = iov_in[0].iov_len + iov_in[1].iov_len; 
+
+  ASSERT_EQ(ceph_pwritev(cmount, fd, iov_out, 2, 0), nwritten);
+  ASSERT_EQ(ceph_preadv(cmount, fd, iov_in, 2, 0), nread);
+  ASSERT_EQ(0, strncmp((const char*)iov_in[0].iov_base, (const char*)iov_out[0].iov_base, iov_out[0].iov_len));
+  ASSERT_EQ(0, strncmp((const char*)iov_in[1].iov_base, (const char*)iov_out[1].iov_base, iov_out[1].iov_len));
+
+  ceph_close(cmount, fd);
+  ceph_shutdown(cmount);
+}
+
+TEST(LibCephFS, LlreadvLlwritev) {
+  struct ceph_mount_info *cmount;
+  ASSERT_EQ(ceph_create(&cmount, NULL), 0);
+  ASSERT_EQ(ceph_conf_read_file(cmount, NULL), 0);
+  ASSERT_EQ(0, ceph_conf_parse_env(cmount, NULL));
+  ASSERT_EQ(ceph_mount(cmount, NULL), 0);
+
+  int mypid = getpid();
+  char filename[256];
+
+  sprintf(filename, "test_llreadvllwritevfile%u", mypid);
+
+  Inode *root, *file;
+  ASSERT_EQ(ceph_ll_lookup_root(cmount, &root), 0);
+
+  Fh *fh;
+  struct ceph_statx stx;
+  UserPerm *perms = ceph_mount_perms(cmount);
+
+  ASSERT_EQ(ceph_ll_create(cmount, root, filename, 0666,
+		    O_RDWR|O_CREAT|O_TRUNC, &file, &fh, &stx, 0, 0, perms), 0);
+
+  /* Reopen read-only */
+  char out0[] = "hello ";
+  char out1[] = "world\n";
+  struct iovec iov_out[2] = {
+	{out0, sizeof(out0)},
+	{out1, sizeof(out1)},
+  };
+  char in0[sizeof(out0)];
+  char in1[sizeof(out1)];
+  struct iovec iov_in[2] = {
+	{in0, sizeof(in0)},
+	{in1, sizeof(in1)},
+  };
+  ssize_t nwritten = iov_out[0].iov_len + iov_out[1].iov_len;
+  ssize_t nread = iov_in[0].iov_len + iov_in[1].iov_len;
+
+  ASSERT_EQ(ceph_ll_writev(cmount, fh, iov_out, 2, 0), nwritten);
+  ASSERT_EQ(ceph_ll_readv(cmount, fh, iov_in, 2, 0), nread);
+  ASSERT_EQ(0, strncmp((const char*)iov_in[0].iov_base, (const char*)iov_out[0].iov_base, iov_out[0].iov_len));
+  ASSERT_EQ(0, strncmp((const char*)iov_in[1].iov_base, (const char*)iov_out[1].iov_base, iov_out[1].iov_len));
+
+  ceph_ll_close(cmount, fh);
+  ceph_shutdown(cmount);
+}
+
+TEST(LibCephFS, StripeUnitGran) {
+  struct ceph_mount_info *cmount;
+  ASSERT_EQ(ceph_create(&cmount, NULL), 0);
+  ASSERT_EQ(ceph_conf_read_file(cmount, NULL), 0);
+  ASSERT_EQ(0, ceph_conf_parse_env(cmount, NULL));
+  ASSERT_EQ(ceph_mount(cmount, NULL), 0);
+  ASSERT_GT(ceph_get_stripe_unit_granularity(cmount), 0);
+  ceph_shutdown(cmount);
+}
+
+TEST(LibCephFS, Rename) {
+  struct ceph_mount_info *cmount;
+  ASSERT_EQ(ceph_create(&cmount, NULL), 0);
+  ASSERT_EQ(ceph_conf_read_file(cmount, NULL), 0);
+  ASSERT_EQ(0, ceph_conf_parse_env(cmount, NULL));
+  ASSERT_EQ(ceph_mount(cmount, NULL), 0);
+
+  int mypid = getpid();
+  char path_src[256];
+  char path_dst[256];
+
+  /* make a source file */
+  sprintf(path_src, "test_rename_src%d", mypid);
+  int fd = ceph_open(cmount, path_src, O_CREAT|O_TRUNC|O_WRONLY, 0777);
+  ASSERT_GT(fd, 0);
+  ASSERT_EQ(0, ceph_close(cmount, fd));
+
+  /* rename to a new dest path */
+  sprintf(path_dst, "test_rename_dst%d", mypid);
+  ASSERT_EQ(0, ceph_rename(cmount, path_src, path_dst));
+
+  /* test that dest path exists */
+  struct ceph_statx stx;
+  ASSERT_EQ(0, ceph_statx(cmount, path_dst, &stx, 0, 0));
+
+  /* test that src path doesn't exist */
+  ASSERT_EQ(-CEPHFS_ENOENT, ceph_statx(cmount, path_src, &stx, 0, AT_SYMLINK_NOFOLLOW));
+
+  /* rename with non-existent source path */
+  ASSERT_EQ(-CEPHFS_ENOENT, ceph_rename(cmount, path_src, path_dst));
+
+  ASSERT_EQ(0, ceph_unlink(cmount, path_dst));
+  ceph_shutdown(cmount);
+}
+
+TEST(LibCephFS, UseUnmounted) {
+  struct ceph_mount_info *cmount;
+  ASSERT_EQ(ceph_create(&cmount, NULL), 0);
+  ASSERT_EQ(ceph_conf_read_file(cmount, NULL), 0);
+  ASSERT_EQ(0, ceph_conf_parse_env(cmount, NULL));
+
+  struct statvfs stvfs;
+  EXPECT_EQ(-CEPHFS_ENOTCONN, ceph_statfs(cmount, "/", &stvfs));
+  EXPECT_EQ(-CEPHFS_ENOTCONN, ceph_get_local_osd(cmount));
+  EXPECT_EQ(-CEPHFS_ENOTCONN, ceph_chdir(cmount, "/"));
+
+  struct ceph_dir_result *dirp;
+  EXPECT_EQ(-CEPHFS_ENOTCONN, ceph_opendir(cmount, "/", &dirp));
+  EXPECT_EQ(-CEPHFS_ENOTCONN, ceph_closedir(cmount, dirp));
+
+  ceph_readdir(cmount, dirp);
+  EXPECT_EQ(CEPHFS_ENOTCONN, errno);
+
+  struct dirent rdent;
+  EXPECT_EQ(-CEPHFS_ENOTCONN, ceph_readdir_r(cmount, dirp, &rdent));
+
+  struct ceph_statx stx;
+  EXPECT_EQ(-CEPHFS_ENOTCONN, ceph_readdirplus_r(cmount, dirp, &rdent, &stx, 0, 0, NULL));
+  EXPECT_EQ(-CEPHFS_ENOTCONN, ceph_getdents(cmount, dirp, NULL, 0));
+  EXPECT_EQ(-CEPHFS_ENOTCONN, ceph_getdnames(cmount, dirp, NULL, 0));
+  EXPECT_EQ(-CEPHFS_ENOTCONN, ceph_telldir(cmount, dirp));
+  EXPECT_EQ(-CEPHFS_ENOTCONN, ceph_link(cmount, "/", "/link"));
+  EXPECT_EQ(-CEPHFS_ENOTCONN, ceph_unlink(cmount, "/path"));
+  EXPECT_EQ(-CEPHFS_ENOTCONN, ceph_rename(cmount, "/path", "/path"));
+  EXPECT_EQ(-CEPHFS_ENOTCONN, ceph_mkdir(cmount, "/", 0655));
+  EXPECT_EQ(-CEPHFS_ENOTCONN, ceph_mkdirs(cmount, "/", 0655));
+  EXPECT_EQ(-CEPHFS_ENOTCONN, ceph_rmdir(cmount, "/path"));
+  EXPECT_EQ(-CEPHFS_ENOTCONN, ceph_readlink(cmount, "/path", NULL, 0));
+  EXPECT_EQ(-CEPHFS_ENOTCONN, ceph_symlink(cmount, "/path", "/path"));
+  EXPECT_EQ(-CEPHFS_ENOTCONN, ceph_statx(cmount, "/path", &stx, 0, 0));
+  EXPECT_EQ(-CEPHFS_ENOTCONN, ceph_setattrx(cmount, "/path", &stx, 0, 0));
+  EXPECT_EQ(-CEPHFS_ENOTCONN, ceph_getxattr(cmount, "/path", "name", NULL, 0));
+  EXPECT_EQ(-CEPHFS_ENOTCONN, ceph_lgetxattr(cmount, "/path", "name", NULL, 0));
+  EXPECT_EQ(-CEPHFS_ENOTCONN, ceph_listxattr(cmount, "/path", NULL, 0));
+  EXPECT_EQ(-CEPHFS_ENOTCONN, ceph_llistxattr(cmount, "/path", NULL, 0));
+  EXPECT_EQ(-CEPHFS_ENOTCONN, ceph_removexattr(cmount, "/path", "name"));
+  EXPECT_EQ(-CEPHFS_ENOTCONN, ceph_lremovexattr(cmount, "/path", "name"));
+  EXPECT_EQ(-CEPHFS_ENOTCONN, ceph_setxattr(cmount, "/path", "name", NULL, 0, 0));
+  EXPECT_EQ(-CEPHFS_ENOTCONN, ceph_lsetxattr(cmount, "/path", "name", NULL, 0, 0));
+  EXPECT_EQ(-CEPHFS_ENOTCONN, ceph_fsetattrx(cmount, 0, &stx, 0));
+  EXPECT_EQ(-CEPHFS_ENOTCONN, ceph_chmod(cmount, "/path", 0));
+  EXPECT_EQ(-CEPHFS_ENOTCONN, ceph_fchmod(cmount, 0, 0));
+  EXPECT_EQ(-CEPHFS_ENOTCONN, ceph_chown(cmount, "/path", 0, 0));
+  EXPECT_EQ(-CEPHFS_ENOTCONN, ceph_lchown(cmount, "/path", 0, 0));
+  EXPECT_EQ(-CEPHFS_ENOTCONN, ceph_fchown(cmount, 0, 0, 0));
+
+  struct utimbuf utb;
+  EXPECT_EQ(-CEPHFS_ENOTCONN, ceph_utime(cmount, "/path", &utb));
+  EXPECT_EQ(-CEPHFS_ENOTCONN, ceph_truncate(cmount, "/path", 0));
+  EXPECT_EQ(-CEPHFS_ENOTCONN, ceph_mknod(cmount, "/path", 0, 0));
+  EXPECT_EQ(-CEPHFS_ENOTCONN, ceph_open(cmount, "/path", 0, 0));
+  EXPECT_EQ(-CEPHFS_ENOTCONN, ceph_open_layout(cmount, "/path", 0, 0, 0, 0, 0, "pool"));
+  EXPECT_EQ(-CEPHFS_ENOTCONN, ceph_close(cmount, 0));
+  EXPECT_EQ(-CEPHFS_ENOTCONN, ceph_lseek(cmount, 0, 0, SEEK_SET));
+  EXPECT_EQ(-CEPHFS_ENOTCONN, ceph_read(cmount, 0, NULL, 0, 0));
+  EXPECT_EQ(-CEPHFS_ENOTCONN, ceph_write(cmount, 0, NULL, 0, 0));
+  EXPECT_EQ(-CEPHFS_ENOTCONN, ceph_ftruncate(cmount, 0, 0));
+  EXPECT_EQ(-CEPHFS_ENOTCONN, ceph_fsync(cmount, 0, 0));
+  EXPECT_EQ(-CEPHFS_ENOTCONN, ceph_fstatx(cmount, 0, &stx, 0, 0));
+  EXPECT_EQ(-CEPHFS_ENOTCONN, ceph_sync_fs(cmount));
+  EXPECT_EQ(-CEPHFS_ENOTCONN, ceph_get_file_stripe_unit(cmount, 0));
+  EXPECT_EQ(-CEPHFS_ENOTCONN, ceph_get_file_stripe_count(cmount, 0));
+  EXPECT_EQ(-CEPHFS_ENOTCONN, ceph_get_file_layout(cmount, 0, NULL, NULL ,NULL ,NULL));
+  EXPECT_EQ(-CEPHFS_ENOTCONN, ceph_get_file_object_size(cmount, 0));
+  EXPECT_EQ(-CEPHFS_ENOTCONN, ceph_get_file_pool(cmount, 0));
+  EXPECT_EQ(-CEPHFS_ENOTCONN, ceph_get_file_pool_name(cmount, 0, NULL, 0));
+  EXPECT_EQ(-CEPHFS_ENOTCONN, ceph_get_file_replication(cmount, 0));
+  EXPECT_EQ(-CEPHFS_ENOTCONN, ceph_get_path_replication(cmount, "/path"));
+  EXPECT_EQ(-CEPHFS_ENOTCONN, ceph_get_path_layout(cmount, "/path", NULL, NULL, NULL, NULL));
+  EXPECT_EQ(-CEPHFS_ENOTCONN, ceph_get_path_object_size(cmount, "/path"));
+  EXPECT_EQ(-CEPHFS_ENOTCONN, ceph_get_path_stripe_count(cmount, "/path"));
+  EXPECT_EQ(-CEPHFS_ENOTCONN, ceph_get_path_stripe_unit(cmount, "/path"));
+  EXPECT_EQ(-CEPHFS_ENOTCONN, ceph_get_path_pool(cmount, "/path"));
+  EXPECT_EQ(-CEPHFS_ENOTCONN, ceph_get_path_pool_name(cmount, "/path", NULL, 0));
+  EXPECT_EQ(-CEPHFS_ENOTCONN, ceph_get_pool_name(cmount, 0, NULL, 0));
+  EXPECT_EQ(-CEPHFS_ENOTCONN, ceph_get_file_stripe_address(cmount, 0, 0, NULL, 0));
+  EXPECT_EQ(-CEPHFS_ENOTCONN, ceph_localize_reads(cmount, 0));
+  EXPECT_EQ(-CEPHFS_ENOTCONN, ceph_debug_get_fd_caps(cmount, 0));
+  EXPECT_EQ(-CEPHFS_ENOTCONN, ceph_debug_get_file_caps(cmount, "/path"));
+  EXPECT_EQ(-CEPHFS_ENOTCONN, ceph_get_stripe_unit_granularity(cmount));
+  EXPECT_EQ(-CEPHFS_ENOTCONN, ceph_get_pool_id(cmount, "data"));
+  EXPECT_EQ(-CEPHFS_ENOTCONN, ceph_get_pool_replication(cmount, 1));
+
+  ceph_release(cmount);
+}
+
+TEST(LibCephFS, GetPoolId) {
+  struct ceph_mount_info *cmount;
+  ASSERT_EQ(ceph_create(&cmount, NULL), 0);
+  ASSERT_EQ(ceph_conf_read_file(cmount, NULL), 0);
+  ASSERT_EQ(0, ceph_conf_parse_env(cmount, NULL));
+  ASSERT_EQ(ceph_mount(cmount, NULL), 0);
+
+  char name[80];
+  memset(name, 0, sizeof(name));
+  ASSERT_LE(0, ceph_get_path_pool_name(cmount, "/", name, sizeof(name)));
+  ASSERT_GE(ceph_get_pool_id(cmount, name), 0);
+  ASSERT_EQ(ceph_get_pool_id(cmount, "weflkjwelfjwlkejf"), -CEPHFS_ENOENT);
+
+  ceph_shutdown(cmount);
+}
+
+TEST(LibCephFS, GetPoolReplication) {
+  struct ceph_mount_info *cmount;
+  ASSERT_EQ(ceph_create(&cmount, NULL), 0);
+  ASSERT_EQ(ceph_conf_read_file(cmount, NULL), 0);
+  ASSERT_EQ(0, ceph_conf_parse_env(cmount, NULL));
+  ASSERT_EQ(ceph_mount(cmount, NULL), 0);
+
+  /* negative pools */
+  ASSERT_EQ(ceph_get_pool_replication(cmount, -10), -CEPHFS_ENOENT);
+
+  /* valid pool */
+  int pool_id;
+  int stripe_unit, stripe_count, object_size;
+  ASSERT_EQ(0, ceph_get_path_layout(cmount, "/", &stripe_unit, &stripe_count,
+				    &object_size, &pool_id));
+  ASSERT_GE(pool_id, 0);
+  ASSERT_GT(ceph_get_pool_replication(cmount, pool_id), 0);
+
+  ceph_shutdown(cmount);
+}
+
+TEST(LibCephFS, GetExtentOsds) {
+  struct ceph_mount_info *cmount;
+  ASSERT_EQ(ceph_create(&cmount, NULL), 0);
+
+  EXPECT_EQ(-CEPHFS_ENOTCONN, ceph_get_file_extent_osds(cmount, 0, 0, NULL, NULL, 0));
+
+  ASSERT_EQ(ceph_conf_read_file(cmount, NULL), 0);
+  ASSERT_EQ(0, ceph_conf_parse_env(cmount, NULL));
+  ASSERT_EQ(ceph_mount(cmount, NULL), 0);
+
+  int stripe_unit = (1<<18);
+
+  /* make a file! */
+  char test_file[256];
+  sprintf(test_file, "test_extent_osds_%d", getpid());
+  int fd = ceph_open_layout(cmount, test_file, O_CREAT|O_RDWR, 0666,
+      stripe_unit, 2, stripe_unit*2, NULL);
+  ASSERT_GT(fd, 0);
+
+  /* get back how many osds > 0 */
+  int ret = ceph_get_file_extent_osds(cmount, fd, 0, NULL, NULL, 0);
+  EXPECT_GT(ret, 0);
+
+  int64_t len;
+  int osds[ret];
+
+  /* full stripe extent */
+  EXPECT_EQ(ret, ceph_get_file_extent_osds(cmount, fd, 0, &len, osds, ret));
+  EXPECT_EQ(len, (int64_t)stripe_unit);
+
+  /* half stripe extent */
+  EXPECT_EQ(ret, ceph_get_file_extent_osds(cmount, fd, stripe_unit/2, &len, osds, ret));
+  EXPECT_EQ(len, (int64_t)stripe_unit/2);
+
+  /* 1.5 stripe unit offset -1 byte */
+  EXPECT_EQ(ret, ceph_get_file_extent_osds(cmount, fd, 3*stripe_unit/2-1, &len, osds, ret));
+  EXPECT_EQ(len, (int64_t)stripe_unit/2+1);
+
+  /* 1.5 stripe unit offset +1 byte */
+  EXPECT_EQ(ret, ceph_get_file_extent_osds(cmount, fd, 3*stripe_unit/2+1, &len, osds, ret));
+  EXPECT_EQ(len, (int64_t)stripe_unit/2-1);
+
+  /* only when more than 1 osd */
+  if (ret > 1) {
+    EXPECT_EQ(-CEPHFS_ERANGE, ceph_get_file_extent_osds(cmount, fd, 0, NULL, osds, 1));
+  }
+
+  ceph_close(cmount, fd);
+
+  ceph_shutdown(cmount);
+}
+
+TEST(LibCephFS, GetOsdCrushLocation) {
+  struct ceph_mount_info *cmount;
+  ASSERT_EQ(ceph_create(&cmount, NULL), 0);
+
+  EXPECT_EQ(-CEPHFS_ENOTCONN, ceph_get_osd_crush_location(cmount, 0, NULL, 0));
+
+  ASSERT_EQ(ceph_conf_read_file(cmount, NULL), 0);
+  ASSERT_EQ(0, ceph_conf_parse_env(cmount, NULL));
+  ASSERT_EQ(ceph_mount(cmount, NULL), 0);
+
+  ASSERT_EQ(ceph_get_osd_crush_location(cmount, 0, NULL, 1), -CEPHFS_EINVAL);
+
+  char path[256];
+  ASSERT_EQ(ceph_get_osd_crush_location(cmount, 9999999, path, 0), -CEPHFS_ENOENT);
+  ASSERT_EQ(ceph_get_osd_crush_location(cmount, -1, path, 0), -CEPHFS_EINVAL);
+
+  char test_file[256];
+  sprintf(test_file, "test_osds_loc_%d", getpid());
+  int fd = ceph_open(cmount, test_file, O_CREAT|O_RDWR, 0666);
+  ASSERT_GT(fd, 0);
+
+  /* get back how many osds > 0 */
+  int ret = ceph_get_file_extent_osds(cmount, fd, 0, NULL, NULL, 0);
+  EXPECT_GT(ret, 0);
+
+  /* full stripe extent */
+  int osds[ret];
+  EXPECT_EQ(ret, ceph_get_file_extent_osds(cmount, fd, 0, NULL, osds, ret));
+
+  ASSERT_GT(ceph_get_osd_crush_location(cmount, 0, path, 0), 0);
+  ASSERT_EQ(ceph_get_osd_crush_location(cmount, 0, path, 1), -CEPHFS_ERANGE);
+
+  for (int i = 0; i < ret; i++) {
+    int len = ceph_get_osd_crush_location(cmount, osds[i], path, sizeof(path));
+    ASSERT_GT(len, 0);
+    int pos = 0;
+    while (pos < len) {
+      std::string type(path + pos);
+      ASSERT_GT((int)type.size(), 0);
+      pos += type.size() + 1;
+
+      std::string name(path + pos);
+      ASSERT_GT((int)name.size(), 0);
+      pos += name.size() + 1;
+    }
+  }
+
+  ceph_close(cmount, fd);
+  ceph_shutdown(cmount);
+}
+
+TEST(LibCephFS, GetOsdAddr) {
+  struct ceph_mount_info *cmount;
+  ASSERT_EQ(ceph_create(&cmount, NULL), 0);
+
+  EXPECT_EQ(-CEPHFS_ENOTCONN, ceph_get_osd_addr(cmount, 0, NULL));
+
+  ASSERT_EQ(ceph_conf_read_file(cmount, NULL), 0);
+  ASSERT_EQ(0, ceph_conf_parse_env(cmount, NULL));
+  ASSERT_EQ(ceph_mount(cmount, NULL), 0);
+
+  ASSERT_EQ(-CEPHFS_EINVAL, ceph_get_osd_addr(cmount, 0, NULL));
+
+  struct sockaddr_storage addr;
+  ASSERT_EQ(-CEPHFS_ENOENT, ceph_get_osd_addr(cmount, -1, &addr));
+  ASSERT_EQ(-CEPHFS_ENOENT, ceph_get_osd_addr(cmount, 9999999, &addr));
+
+  ASSERT_EQ(0, ceph_get_osd_addr(cmount, 0, &addr));
+
+  ceph_shutdown(cmount);
+}
+
+TEST(LibCephFS, OpenNoClose) {
+  struct ceph_mount_info *cmount;
+  ASSERT_EQ(ceph_create(&cmount, NULL), 0);
+  ASSERT_EQ(ceph_conf_read_file(cmount, NULL), 0);
+  ASSERT_EQ(0, ceph_conf_parse_env(cmount, NULL));
+  ASSERT_EQ(ceph_mount(cmount, "/"), 0);
+
+  pid_t mypid = getpid();
+  char str_buf[256];
+  sprintf(str_buf, "open_no_close_dir%d", mypid);
+  ASSERT_EQ(0, ceph_mkdirs(cmount, str_buf, 0777));
+
+  struct ceph_dir_result *ls_dir = NULL;
+  ASSERT_EQ(ceph_opendir(cmount, str_buf, &ls_dir), 0);
+
+  sprintf(str_buf, "open_no_close_file%d", mypid);
+  int fd = ceph_open(cmount, str_buf, O_RDONLY|O_CREAT, 0666);
+  ASSERT_LT(0, fd);
+
+  // shutdown should force close opened file/dir
+  ceph_shutdown(cmount);
+}
+
+TEST(LibCephFS, Nlink) {
+  struct ceph_mount_info *cmount;
+  ASSERT_EQ(ceph_create(&cmount, NULL), 0);
+  ASSERT_EQ(ceph_conf_read_file(cmount, NULL), 0);
+  ASSERT_EQ(0, ceph_conf_parse_env(cmount, NULL));
+  ASSERT_EQ(ceph_mount(cmount, "/"), 0);
+
+  Inode *root, *dir, *file;
+
+  ASSERT_EQ(ceph_ll_lookup_root(cmount, &root), 0);
+
+  char dirname[32], filename[32], linkname[32];
+  sprintf(dirname, "nlinkdir%x", getpid());
+  sprintf(filename, "nlinkorig%x", getpid());
+  sprintf(linkname, "nlinklink%x", getpid());
+
+  struct ceph_statx stx;
+  Fh *fh;
+  UserPerm *perms = ceph_mount_perms(cmount);
+
+  ASSERT_EQ(ceph_ll_mkdir(cmount, root, dirname, 0755, &dir, &stx, 0, 0, perms), 0);
+  ASSERT_EQ(ceph_ll_create(cmount, dir, filename, 0666, O_RDWR|O_CREAT|O_EXCL,
+			   &file, &fh, &stx, CEPH_STATX_NLINK, 0, perms), 0);
+  ASSERT_EQ(ceph_ll_close(cmount, fh), 0);
+  ASSERT_EQ(stx.stx_nlink, (nlink_t)1);
+
+  ASSERT_EQ(ceph_ll_link(cmount, file, dir, linkname, perms), 0);
+  ASSERT_EQ(ceph_ll_getattr(cmount, file, &stx, CEPH_STATX_NLINK, 0, perms), 0);
+  ASSERT_EQ(stx.stx_nlink, (nlink_t)2);
+
+  ASSERT_EQ(ceph_ll_unlink(cmount, dir, linkname, perms), 0);
+  ASSERT_EQ(ceph_ll_lookup(cmount, dir, filename, &file, &stx,
+			   CEPH_STATX_NLINK, 0, perms), 0);
+  ASSERT_EQ(stx.stx_nlink, (nlink_t)1);
+
+  ceph_shutdown(cmount);
+}
+
+TEST(LibCephFS, SlashDotDot) {
+  struct ceph_mount_info *cmount;
+  ASSERT_EQ(ceph_create(&cmount, NULL), 0);
+  ASSERT_EQ(ceph_conf_read_file(cmount, NULL), 0);
+  ASSERT_EQ(0, ceph_conf_parse_env(cmount, NULL));
+  ASSERT_EQ(ceph_mount(cmount, "/"), 0);
+
+  struct ceph_statx	stx;
+  ASSERT_EQ(ceph_statx(cmount, "/.", &stx, CEPH_STATX_INO, 0), 0);
+
+  ino_t ino = stx.stx_ino;
+  ASSERT_EQ(ceph_statx(cmount, "/..", &stx, CEPH_STATX_INO, 0), 0);
+
+  /* At root, "." and ".." should be the same inode */
+  ASSERT_EQ(ino, stx.stx_ino);
+
+  /* Test accessing the parent of an unlinked directory */
+  char dir1[32], dir2[56];
+  sprintf(dir1, "/sldotdot%x", getpid());
+  sprintf(dir2, "%s/sub%x", dir1, getpid());
+
+  ASSERT_EQ(ceph_mkdir(cmount, dir1, 0755), 0);
+  ASSERT_EQ(ceph_mkdir(cmount, dir2, 0755), 0);
+
+  ASSERT_EQ(ceph_chdir(cmount, dir2), 0);
+
+  /* Test behavior when unlinking cwd */
+  struct ceph_dir_result *rdir;
+  ASSERT_EQ(ceph_opendir(cmount, ".", &rdir), 0);
+  ASSERT_EQ(ceph_rmdir(cmount, dir2), 0);
+
+  /* get "." entry */
+  struct dirent *result = ceph_readdir(cmount, rdir);
+  ino = result->d_ino;
+
+  /* get ".." entry */
+  result = ceph_readdir(cmount, rdir);
+  ASSERT_EQ(ino, result->d_ino);
+  ceph_closedir(cmount, rdir);
+
+  /* Make sure it works same way when mounting subtree */
+  ASSERT_EQ(ceph_unmount(cmount), 0);
+  ASSERT_EQ(ceph_mount(cmount, dir1), 0);
+  ASSERT_EQ(ceph_statx(cmount, "/..", &stx, CEPH_STATX_INO, 0), 0);
+
+  /* Test readdir behavior */
+  ASSERT_EQ(ceph_opendir(cmount, "/", &rdir), 0);
+  result = ceph_readdir(cmount, rdir);
+  ASSERT_TRUE(result != NULL);
+  ASSERT_STREQ(result->d_name, ".");
+  ino = result->d_ino;
+  result = ceph_readdir(cmount, rdir);
+  ASSERT_TRUE(result != NULL);
+  ASSERT_STREQ(result->d_name, "..");
+  ASSERT_EQ(ino, result->d_ino);
+
+  ceph_shutdown(cmount);
+}
+
+static inline bool
+timespec_eq(timespec const& lhs, timespec const& rhs)
+{
+  return lhs.tv_sec == rhs.tv_sec && lhs.tv_nsec == rhs.tv_nsec;
+}
+
+TEST(LibCephFS, Btime) {
+  struct ceph_mount_info *cmount;
+  ASSERT_EQ(ceph_create(&cmount, NULL), 0);
+  ASSERT_EQ(ceph_conf_read_file(cmount, NULL), 0);
+  ASSERT_EQ(0, ceph_conf_parse_env(cmount, NULL));
+  ASSERT_EQ(ceph_mount(cmount, "/"), 0);
+
+  char filename[32];
+  sprintf(filename, "/getattrx%x", getpid());
+
+  ceph_unlink(cmount, filename);
+  int fd = ceph_open(cmount, filename, O_RDWR|O_CREAT|O_EXCL, 0666);
+  ASSERT_LT(0, fd);
+
+  /* make sure fstatx works */
+  struct ceph_statx	stx;
+
+  ASSERT_EQ(ceph_fstatx(cmount, fd, &stx, CEPH_STATX_CTIME|CEPH_STATX_BTIME, 0), 0);
+  ASSERT_TRUE(stx.stx_mask & (CEPH_STATX_CTIME|CEPH_STATX_BTIME));
+  ASSERT_TRUE(timespec_eq(stx.stx_ctime, stx.stx_btime));
+  ceph_close(cmount, fd);
+
+  ASSERT_EQ(ceph_statx(cmount, filename, &stx, CEPH_STATX_CTIME|CEPH_STATX_BTIME, 0), 0);
+  ASSERT_TRUE(timespec_eq(stx.stx_ctime, stx.stx_btime));
+  ASSERT_TRUE(stx.stx_mask & (CEPH_STATX_CTIME|CEPH_STATX_BTIME));
+
+  struct timespec old_btime = stx.stx_btime;
+
+  /* Now sleep, do a chmod and verify that the ctime changed, but btime didn't */
+  sleep(1);
+  ASSERT_EQ(ceph_chmod(cmount, filename, 0644), 0);
+  ASSERT_EQ(ceph_statx(cmount, filename, &stx, CEPH_STATX_CTIME|CEPH_STATX_BTIME, 0), 0);
+  ASSERT_TRUE(stx.stx_mask & CEPH_STATX_BTIME);
+  ASSERT_TRUE(timespec_eq(stx.stx_btime, old_btime));
+  ASSERT_FALSE(timespec_eq(stx.stx_ctime, stx.stx_btime));
+
+  ceph_shutdown(cmount);
+}
+
+TEST(LibCephFS, SetBtime) {
+  struct ceph_mount_info *cmount;
+  ASSERT_EQ(ceph_create(&cmount, NULL), 0);
+  ASSERT_EQ(ceph_conf_read_file(cmount, NULL), 0);
+  ASSERT_EQ(0, ceph_conf_parse_env(cmount, NULL));
+  ASSERT_EQ(ceph_mount(cmount, "/"), 0);
+
+  char filename[32];
+  sprintf(filename, "/setbtime%x", getpid());
+
+  ceph_unlink(cmount, filename);
+  int fd = ceph_open(cmount, filename, O_RDWR|O_CREAT|O_EXCL, 0666);
+  ASSERT_LT(0, fd);
+  ceph_close(cmount, fd);
+
+  struct ceph_statx stx;
+  struct timespec old_btime = { 1, 2 };
+
+  stx.stx_btime = old_btime;
+
+  ASSERT_EQ(ceph_setattrx(cmount, filename, &stx, CEPH_SETATTR_BTIME, 0), 0);
+
+  ASSERT_EQ(ceph_statx(cmount, filename, &stx, CEPH_STATX_BTIME, 0), 0);
+  ASSERT_TRUE(stx.stx_mask & CEPH_STATX_BTIME);
+  ASSERT_TRUE(timespec_eq(stx.stx_btime, old_btime));
+
+  ceph_shutdown(cmount);
+}
+
+TEST(LibCephFS, LazyStatx) {
+  struct ceph_mount_info *cmount1, *cmount2;
+  ASSERT_EQ(ceph_create(&cmount1, NULL), 0);
+  ASSERT_EQ(ceph_create(&cmount2, NULL), 0);
+  ASSERT_EQ(ceph_conf_read_file(cmount1, NULL), 0);
+  ASSERT_EQ(ceph_conf_read_file(cmount2, NULL), 0);
+  ASSERT_EQ(0, ceph_conf_parse_env(cmount1, NULL));
+  ASSERT_EQ(0, ceph_conf_parse_env(cmount2, NULL));
+  ASSERT_EQ(ceph_mount(cmount1, "/"), 0);
+  ASSERT_EQ(ceph_mount(cmount2, "/"), 0);
+
+  char filename[32];
+  sprintf(filename, "lazystatx%x", getpid());
+
+  Inode *root1, *file1, *root2, *file2;
+  struct ceph_statx stx;
+  Fh *fh;
+  UserPerm *perms1 = ceph_mount_perms(cmount1);
+  UserPerm *perms2 = ceph_mount_perms(cmount2);
+
+  ASSERT_EQ(ceph_ll_lookup_root(cmount1, &root1), 0);
+  ceph_ll_unlink(cmount1, root1, filename, perms1);
+  ASSERT_EQ(ceph_ll_create(cmount1, root1, filename, 0666, O_RDWR|O_CREAT|O_EXCL,
+			   &file1, &fh, &stx, 0, 0, perms1), 0);
+  ASSERT_EQ(ceph_ll_close(cmount1, fh), 0);
+
+  ASSERT_EQ(ceph_ll_lookup_root(cmount2, &root2), 0);
+
+  ASSERT_EQ(ceph_ll_lookup(cmount2, root2, filename, &file2, &stx, CEPH_STATX_CTIME, 0, perms2), 0);
+
+  struct timespec old_ctime = stx.stx_ctime;
+
+  /*
+   * Now sleep, do a chmod on the first client and the see whether we get a
+   * different ctime with a statx that uses AT_STATX_DONT_SYNC
+   */
+  sleep(1);
+  stx.stx_mode = 0644;
+  ASSERT_EQ(ceph_ll_setattr(cmount1, file1, &stx, CEPH_SETATTR_MODE, perms1), 0);
+
+  ASSERT_EQ(ceph_ll_getattr(cmount2, file2, &stx, CEPH_STATX_CTIME, AT_STATX_DONT_SYNC, perms2), 0);
+  ASSERT_TRUE(stx.stx_mask & CEPH_STATX_CTIME);
+  ASSERT_TRUE(stx.stx_ctime.tv_sec == old_ctime.tv_sec &&
+	      stx.stx_ctime.tv_nsec == old_ctime.tv_nsec);
+
+  ceph_shutdown(cmount1);
+  ceph_shutdown(cmount2);
+}
+
+TEST(LibCephFS, ChangeAttr) {
+  struct ceph_mount_info *cmount;
+  ASSERT_EQ(ceph_create(&cmount, NULL), 0);
+  ASSERT_EQ(ceph_conf_read_file(cmount, NULL), 0);
+  ASSERT_EQ(0, ceph_conf_parse_env(cmount, NULL));
+  ASSERT_EQ(ceph_mount(cmount, "/"), 0);
+
+  char filename[32];
+  sprintf(filename, "/changeattr%x", getpid());
+
+  ceph_unlink(cmount, filename);
+  int fd = ceph_open(cmount, filename, O_RDWR|O_CREAT|O_EXCL, 0666);
+  ASSERT_LT(0, fd);
+
+  struct ceph_statx	stx;
+  ASSERT_EQ(ceph_statx(cmount, filename, &stx, CEPH_STATX_VERSION, 0), 0);
+  ASSERT_TRUE(stx.stx_mask & CEPH_STATX_VERSION);
+
+  uint64_t old_change_attr = stx.stx_version;
+
+  /* do chmod, and check whether change_attr changed */
+  ASSERT_EQ(ceph_chmod(cmount, filename, 0644), 0);
+  ASSERT_EQ(ceph_statx(cmount, filename, &stx, CEPH_STATX_VERSION, 0), 0);
+  ASSERT_TRUE(stx.stx_mask & CEPH_STATX_VERSION);
+  ASSERT_NE(stx.stx_version, old_change_attr);
+  old_change_attr = stx.stx_version;
+
+  /* now do a write and see if it changed again */
+  ASSERT_EQ(3, ceph_write(cmount, fd, "foo", 3, 0));
+  ASSERT_EQ(ceph_statx(cmount, filename, &stx, CEPH_STATX_VERSION, 0), 0);
+  ASSERT_TRUE(stx.stx_mask & CEPH_STATX_VERSION);
+  ASSERT_NE(stx.stx_version, old_change_attr);
+  old_change_attr = stx.stx_version;
+
+  /* Now truncate and check again */
+  ASSERT_EQ(0, ceph_ftruncate(cmount, fd, 0));
+  ASSERT_EQ(ceph_statx(cmount, filename, &stx, CEPH_STATX_VERSION, 0), 0);
+  ASSERT_TRUE(stx.stx_mask & CEPH_STATX_VERSION);
+  ASSERT_NE(stx.stx_version, old_change_attr);
+
+  ceph_close(cmount, fd);
+  ceph_shutdown(cmount);
+}
+
+TEST(LibCephFS, DirChangeAttrCreateFile) {
+  struct ceph_mount_info *cmount;
+  ASSERT_EQ(ceph_create(&cmount, NULL), 0);
+  ASSERT_EQ(ceph_conf_read_file(cmount, NULL), 0);
+  ASSERT_EQ(0, ceph_conf_parse_env(cmount, NULL));
+  ASSERT_EQ(ceph_mount(cmount, "/"), 0);
+
+  char dirpath[32], filepath[56];
+  sprintf(dirpath, "/dirchange%x", getpid());
+  sprintf(filepath, "%s/foo", dirpath);
+
+  ASSERT_EQ(ceph_mkdir(cmount, dirpath, 0755), 0);
+
+  struct ceph_statx	stx;
+  ASSERT_EQ(ceph_statx(cmount, dirpath, &stx, CEPH_STATX_VERSION, 0), 0);
+  ASSERT_TRUE(stx.stx_mask & CEPH_STATX_VERSION);
+
+  uint64_t old_change_attr = stx.stx_version;
+
+  /* Important: Follow an operation that changes the directory's ctime (setxattr)
+   * with one that changes the directory's mtime and ctime (create).
+   * Check that directory's change_attr is updated everytime ctime changes.
+   */
+
+  /* set xattr on dir, and check whether dir's change_attr is incremented */
+  ASSERT_EQ(ceph_setxattr(cmount, dirpath, "user.name", (void*)"bob", 3, XATTR_CREATE), 0);
+  ASSERT_EQ(ceph_statx(cmount, dirpath, &stx, CEPH_STATX_VERSION, 0), 0);
+  ASSERT_TRUE(stx.stx_mask & CEPH_STATX_VERSION);
+  ASSERT_GT(stx.stx_version, old_change_attr);
+  old_change_attr = stx.stx_version;
+
+  /* create a file within dir, and check whether dir's change_attr is incremented */
+  int fd = ceph_open(cmount, filepath, O_RDWR|O_CREAT|O_EXCL, 0666);
+  ASSERT_LT(0, fd);
+  ceph_close(cmount, fd);
+  ASSERT_EQ(ceph_statx(cmount, dirpath, &stx, CEPH_STATX_VERSION, 0), 0);
+  ASSERT_TRUE(stx.stx_mask & CEPH_STATX_VERSION);
+  ASSERT_GT(stx.stx_version, old_change_attr);
+
+  ASSERT_EQ(0, ceph_unlink(cmount, filepath));
+  ASSERT_EQ(0, ceph_rmdir(cmount, dirpath));
+  ceph_shutdown(cmount);
+}
+
+TEST(LibCephFS, DirChangeAttrRenameFile) {
+  struct ceph_mount_info *cmount;
+  ASSERT_EQ(ceph_create(&cmount, NULL), 0);
+  ASSERT_EQ(ceph_conf_read_file(cmount, NULL), 0);
+  ASSERT_EQ(0, ceph_conf_parse_env(cmount, NULL));
+  ASSERT_EQ(ceph_mount(cmount, "/"), 0);
+
+  char dirpath[32], filepath[56], newfilepath[56];
+  sprintf(dirpath, "/dirchange%x", getpid());
+  sprintf(filepath, "%s/foo", dirpath);
+
+  ASSERT_EQ(ceph_mkdir(cmount, dirpath, 0755), 0);
+
+  int fd = ceph_open(cmount, filepath, O_RDWR|O_CREAT|O_EXCL, 0666);
+  ASSERT_LT(0, fd);
+  ceph_close(cmount, fd);
+
+  /* Important: Follow an operation that changes the directory's ctime (setattr)
+   * with one that changes the directory's mtime and ctime (rename).
+   * Check that directory's change_attr is updated everytime ctime changes.
+   */
+  struct ceph_statx	stx;
+  ASSERT_EQ(ceph_statx(cmount, dirpath, &stx, CEPH_STATX_VERSION, 0), 0);
+  ASSERT_TRUE(stx.stx_mask & CEPH_STATX_VERSION);
+
+  uint64_t old_change_attr = stx.stx_version;
+
+  /* chmod dir, and check whether dir's change_attr is incremented */
+  ASSERT_EQ(ceph_chmod(cmount, dirpath, 0777), 0);
+  ASSERT_EQ(ceph_statx(cmount, dirpath, &stx, CEPH_STATX_VERSION, 0), 0);
+  ASSERT_TRUE(stx.stx_mask & CEPH_STATX_VERSION);
+  ASSERT_GT(stx.stx_version, old_change_attr);
+  old_change_attr = stx.stx_version;
+
+  /* rename a file within dir, and check whether dir's change_attr is incremented */
+  sprintf(newfilepath, "%s/bar", dirpath);
+  ASSERT_EQ(ceph_rename(cmount, filepath, newfilepath), 0);
+  ASSERT_EQ(ceph_statx(cmount, dirpath, &stx, CEPH_STATX_VERSION, 0), 0);
+  ASSERT_TRUE(stx.stx_mask & CEPH_STATX_VERSION);
+  ASSERT_GT(stx.stx_version, old_change_attr);
+
+  ASSERT_EQ(0, ceph_unlink(cmount, newfilepath));
+  ASSERT_EQ(0, ceph_rmdir(cmount, dirpath));
+  ceph_shutdown(cmount);
+}
+
+TEST(LibCephFS, DirChangeAttrRemoveFile) {
+  struct ceph_mount_info *cmount;
+  ASSERT_EQ(ceph_create(&cmount, NULL), 0);
+  ASSERT_EQ(ceph_conf_read_file(cmount, NULL), 0);
+  ASSERT_EQ(0, ceph_conf_parse_env(cmount, NULL));
+  ASSERT_EQ(ceph_mount(cmount, "/"), 0);
+
+  char dirpath[32], filepath[56];
+  sprintf(dirpath, "/dirchange%x", getpid());
+  sprintf(filepath, "%s/foo", dirpath);
+
+  ASSERT_EQ(ceph_mkdir(cmount, dirpath, 0755), 0);
+
+  ASSERT_EQ(ceph_setxattr(cmount, dirpath, "user.name", (void*)"bob", 3, XATTR_CREATE), 0);
+
+  int fd = ceph_open(cmount, filepath, O_RDWR|O_CREAT|O_EXCL, 0666);
+  ASSERT_LT(0, fd);
+  ceph_close(cmount, fd);
+
+  /* Important: Follow an operation that changes the directory's ctime (removexattr)
+   * with one that changes the directory's mtime and ctime (remove a file).
+   * Check that directory's change_attr is updated everytime ctime changes.
+   */
+  struct ceph_statx	stx;
+  ASSERT_EQ(ceph_statx(cmount, dirpath, &stx, CEPH_STATX_VERSION, 0), 0);
+  ASSERT_TRUE(stx.stx_mask & CEPH_STATX_VERSION);
+
+  uint64_t old_change_attr = stx.stx_version;
+
+  /* remove xattr, and check whether dir's change_attr is incremented */
+  ASSERT_EQ(ceph_removexattr(cmount, dirpath, "user.name"), 0);
+  ASSERT_EQ(ceph_statx(cmount, dirpath, &stx, CEPH_STATX_VERSION, 0), 0);
+  ASSERT_TRUE(stx.stx_mask & CEPH_STATX_VERSION);
+  ASSERT_GT(stx.stx_version, old_change_attr);
+  old_change_attr = stx.stx_version;
+
+  /* remove a file within dir, and check whether dir's change_attr is incremented */
+  ASSERT_EQ(0, ceph_unlink(cmount, filepath));
+  ASSERT_EQ(ceph_statx(cmount, dirpath, &stx, CEPH_STATX_VERSION, 0), 0);
+  ASSERT_TRUE(stx.stx_mask & CEPH_STATX_VERSION);
+  ASSERT_GT(stx.stx_version, old_change_attr);
+
+  ASSERT_EQ(0, ceph_rmdir(cmount, dirpath));
+  ceph_shutdown(cmount);
+}
+
+TEST(LibCephFS, SetSize) {
+  struct ceph_mount_info *cmount;
+  ASSERT_EQ(ceph_create(&cmount, NULL), 0);
+  ASSERT_EQ(ceph_conf_read_file(cmount, NULL), 0);
+  ASSERT_EQ(0, ceph_conf_parse_env(cmount, NULL));
+  ASSERT_EQ(ceph_mount(cmount, "/"), 0);
+
+  char filename[32];
+  sprintf(filename, "/setsize%x", getpid());
+
+  ceph_unlink(cmount, filename);
+  int fd = ceph_open(cmount, filename, O_RDWR|O_CREAT|O_EXCL, 0666);
+  ASSERT_LT(0, fd);
+
+  struct ceph_statx stx;
+  uint64_t size = 8388608;
+  stx.stx_size = size;
+  ASSERT_EQ(ceph_fsetattrx(cmount, fd, &stx, CEPH_SETATTR_SIZE), 0);
+  ASSERT_EQ(ceph_fstatx(cmount, fd, &stx, CEPH_STATX_SIZE, 0), 0);
+  ASSERT_EQ(stx.stx_size, size);
+
+  ceph_close(cmount, fd);
+  ceph_shutdown(cmount);
+}
+
+TEST(LibCephFS, OperationsOnRoot)
+{
+  struct ceph_mount_info *cmount;
+  ASSERT_EQ(ceph_create(&cmount, NULL), 0);
+  ASSERT_EQ(ceph_conf_read_file(cmount, NULL), 0);
+  ASSERT_EQ(0, ceph_conf_parse_env(cmount, NULL));
+  ASSERT_EQ(ceph_mount(cmount, "/"), 0);
+
+  char dirname[32];
+  sprintf(dirname, "/somedir%x", getpid());
+
+  ASSERT_EQ(ceph_mkdir(cmount, dirname, 0755), 0);
+
+  ASSERT_EQ(ceph_rmdir(cmount, "/"), -CEPHFS_EBUSY);
+
+  ASSERT_EQ(ceph_link(cmount, "/", "/"), -CEPHFS_EEXIST);
+  ASSERT_EQ(ceph_link(cmount, dirname, "/"), -CEPHFS_EEXIST);
+  ASSERT_EQ(ceph_link(cmount, "nonExisitingDir", "/"), -CEPHFS_ENOENT);
+
+  ASSERT_EQ(ceph_unlink(cmount, "/"), -CEPHFS_EISDIR);
+
+  ASSERT_EQ(ceph_rename(cmount, "/", "/"), -CEPHFS_EBUSY);
+  ASSERT_EQ(ceph_rename(cmount, dirname, "/"), -CEPHFS_EBUSY);
+  ASSERT_EQ(ceph_rename(cmount, "nonExistingDir", "/"), -CEPHFS_EBUSY);
+  ASSERT_EQ(ceph_rename(cmount, "/", dirname), -CEPHFS_EBUSY);
+  ASSERT_EQ(ceph_rename(cmount, "/", "nonExistingDir"), -CEPHFS_EBUSY);
+
+  ASSERT_EQ(ceph_mkdir(cmount, "/", 0777), -CEPHFS_EEXIST);
+
+  ASSERT_EQ(ceph_mknod(cmount, "/", 0, 0), -CEPHFS_EEXIST);
+
+  ASSERT_EQ(ceph_symlink(cmount, "/", "/"), -CEPHFS_EEXIST);
+  ASSERT_EQ(ceph_symlink(cmount, dirname, "/"), -CEPHFS_EEXIST);
+  ASSERT_EQ(ceph_symlink(cmount, "nonExistingDir", "/"), -CEPHFS_EEXIST);
+
+  ceph_shutdown(cmount);
+}
+
+// no rlimits on Windows
+#ifndef _WIN32
+static void shutdown_racer_func()
+{
+  const int niter = 32;
+  struct ceph_mount_info *cmount;
+  int i;
+
+  for (i = 0; i < niter; ++i) {
+    ASSERT_EQ(ceph_create(&cmount, NULL), 0);
+    ASSERT_EQ(ceph_conf_read_file(cmount, NULL), 0);
+    ASSERT_EQ(0, ceph_conf_parse_env(cmount, NULL));
+    ASSERT_EQ(ceph_mount(cmount, "/"), 0);
+    ceph_shutdown(cmount);
+  }
+}
+
+// See tracker #20988
+TEST(LibCephFS, ShutdownRace)
+{
+  const int nthreads = 32;
+  std::thread threads[nthreads];
+
+  // Need a bunch of fd's for this test
+  struct rlimit rold, rnew;
+  ASSERT_EQ(getrlimit(RLIMIT_NOFILE, &rold), 0);
+  rnew = rold;
+  rnew.rlim_cur = rnew.rlim_max;
+
+  cout << "Setting RLIMIT_NOFILE from " << rold.rlim_cur <<
+	  " to " << rnew.rlim_cur << std::endl;
+
+  ASSERT_EQ(setrlimit(RLIMIT_NOFILE, &rnew), 0);
+
+  for (int i = 0; i < nthreads; ++i)
+    threads[i] = std::thread(shutdown_racer_func);
+
+  for (int i = 0; i < nthreads; ++i)
+    threads[i].join();
+  /*
+   * Let's just ignore restoring the open files limit,
+   * the kernel will defer releasing the file descriptors
+   * and then the process will be possibly reachthe open
+   * files limit. More detail, please see tracer#43039
+   */
+//  ASSERT_EQ(setrlimit(RLIMIT_NOFILE, &rold), 0);
+}
+#endif
+
+static void get_current_time_utimbuf(struct utimbuf *utb)
+{
+  utime_t t = ceph_clock_now();
+  utb->actime = t.sec();
+  utb->modtime = t.sec();
+}
+
+static void get_current_time_timeval(struct timeval tv[2])
+{
+  utime_t t = ceph_clock_now();
+  t.copy_to_timeval(&tv[0]);
+  t.copy_to_timeval(&tv[1]);
+}
+
+static void get_current_time_timespec(struct timespec ts[2])
+{
+  utime_t t = ceph_clock_now();
+  t.to_timespec(&ts[0]);
+  t.to_timespec(&ts[1]);
+}
+
+TEST(LibCephFS, TestUtime) {
+  struct ceph_mount_info *cmount;
+  ASSERT_EQ(ceph_create(&cmount, NULL), 0);
+  ASSERT_EQ(ceph_conf_read_file(cmount, NULL), 0);
+  ASSERT_EQ(0, ceph_conf_parse_env(cmount, NULL));
+  ASSERT_EQ(ceph_mount(cmount, NULL), 0);
+
+  char test_file[256];
+  sprintf(test_file, "test_utime_file_%d", getpid());
+  int fd = ceph_open(cmount, test_file, O_CREAT, 0666);
+  ASSERT_GT(fd, 0);
+
+  struct utimbuf utb;
+  struct ceph_statx stx;
+
+  get_current_time_utimbuf(&utb);
+
+  // ceph_utime()
+  EXPECT_EQ(0, ceph_utime(cmount, test_file, &utb));
+  ASSERT_EQ(ceph_statx(cmount, test_file, &stx,
+                       CEPH_STATX_MTIME|CEPH_STATX_ATIME, 0), 0);
+  ASSERT_EQ(utime_t(stx.stx_atime), utime_t(utb.actime, 0));
+  ASSERT_EQ(utime_t(stx.stx_mtime), utime_t(utb.modtime, 0));
+
+  get_current_time_utimbuf(&utb);
+
+  // ceph_futime()
+  EXPECT_EQ(0, ceph_futime(cmount, fd, &utb));
+  ASSERT_EQ(ceph_statx(cmount, test_file, &stx,
+                       CEPH_STATX_MTIME|CEPH_STATX_ATIME, 0), 0);
+  ASSERT_EQ(utime_t(stx.stx_atime), utime_t(utb.actime, 0));
+  ASSERT_EQ(utime_t(stx.stx_mtime), utime_t(utb.modtime, 0));
+
+  ceph_close(cmount, fd);
+  ceph_shutdown(cmount);
+}
+
+TEST(LibCephFS, TestUtimes) {
+  struct ceph_mount_info *cmount;
+  ASSERT_EQ(ceph_create(&cmount, NULL), 0);
+  ASSERT_EQ(ceph_conf_read_file(cmount, NULL), 0);
+  ASSERT_EQ(0, ceph_conf_parse_env(cmount, NULL));
+  ASSERT_EQ(ceph_mount(cmount, NULL), 0);
+
+  char test_file[256];
+  char test_symlink[256];
+
+  sprintf(test_file, "test_utimes_file_%d", getpid());
+  sprintf(test_symlink, "test_utimes_symlink_%d", getpid());
+  int fd = ceph_open(cmount, test_file, O_CREAT, 0666);
+  ASSERT_GT(fd, 0);
+
+  ASSERT_EQ(ceph_symlink(cmount, test_file, test_symlink), 0);
+
+  struct timeval times[2];
+  struct ceph_statx stx;
+
+  get_current_time_timeval(times);
+
+  // ceph_utimes() on symlink, validate target file time
+  EXPECT_EQ(0, ceph_utimes(cmount, test_symlink, times));
+  ASSERT_EQ(ceph_statx(cmount, test_symlink, &stx,
+                       CEPH_STATX_MTIME|CEPH_STATX_ATIME, 0), 0);
+  ASSERT_EQ(utime_t(stx.stx_atime), utime_t(times[0]));
+  ASSERT_EQ(utime_t(stx.stx_mtime), utime_t(times[1]));
+
+  get_current_time_timeval(times);
+
+  // ceph_lutimes() on symlink, validate symlink time
+  EXPECT_EQ(0, ceph_lutimes(cmount, test_symlink, times));
+  ASSERT_EQ(ceph_statx(cmount, test_symlink, &stx,
+                       CEPH_STATX_MTIME|CEPH_STATX_ATIME, AT_SYMLINK_NOFOLLOW), 0);
+  ASSERT_EQ(utime_t(stx.stx_atime), utime_t(times[0]));
+  ASSERT_EQ(utime_t(stx.stx_mtime), utime_t(times[1]));
+
+  get_current_time_timeval(times);
+
+  // ceph_futimes()
+  EXPECT_EQ(0, ceph_futimes(cmount, fd, times));
+  ASSERT_EQ(ceph_statx(cmount, test_file, &stx,
+                       CEPH_STATX_MTIME|CEPH_STATX_ATIME, 0), 0);
+  ASSERT_EQ(utime_t(stx.stx_atime), utime_t(times[0]));
+  ASSERT_EQ(utime_t(stx.stx_mtime), utime_t(times[1]));
+
+  ceph_close(cmount, fd);
+  ceph_shutdown(cmount);
+}
+
+TEST(LibCephFS, TestFutimens) {
+  struct ceph_mount_info *cmount;
+  ASSERT_EQ(ceph_create(&cmount, NULL), 0);
+  ASSERT_EQ(ceph_conf_read_file(cmount, NULL), 0);
+  ASSERT_EQ(0, ceph_conf_parse_env(cmount, NULL));
+  ASSERT_EQ(ceph_mount(cmount, NULL), 0);
+
+  char test_file[256];
+
+  sprintf(test_file, "test_futimens_file_%d", getpid());
+  int fd = ceph_open(cmount, test_file, O_CREAT, 0666);
+  ASSERT_GT(fd, 0);
+
+  struct timespec times[2];
+  struct ceph_statx stx;
+
+  get_current_time_timespec(times);
+
+  // ceph_futimens()
+  EXPECT_EQ(0, ceph_futimens(cmount, fd, times));
+  ASSERT_EQ(ceph_statx(cmount, test_file, &stx,
+                       CEPH_STATX_MTIME|CEPH_STATX_ATIME, 0), 0);
+  ASSERT_EQ(utime_t(stx.stx_atime), utime_t(times[0]));
+  ASSERT_EQ(utime_t(stx.stx_mtime), utime_t(times[1]));
+
+  ceph_close(cmount, fd);
+  ceph_shutdown(cmount);
+}
+
+TEST(LibCephFS, OperationsOnDotDot) {
+  struct ceph_mount_info *cmount;
+  ASSERT_EQ(ceph_create(&cmount, NULL), 0);
+  ASSERT_EQ(ceph_conf_read_file(cmount, NULL), 0);
+  ASSERT_EQ(0, ceph_conf_parse_env(cmount, NULL));
+  ASSERT_EQ(ceph_mount(cmount, NULL), 0);
+
+  char c_dir[512], c_dir_dot[1024], c_dir_dotdot[1024];
+  char c_non_existent_dir[1024], c_non_existent_dirs[1024];
+  char c_temp[1024];
+
+  pid_t mypid = getpid();
+  sprintf(c_dir, "/oodd_dir_%d", mypid);
+  sprintf(c_dir_dot, "/%s/.", c_dir);
+  sprintf(c_dir_dotdot, "/%s/..", c_dir);
+  sprintf(c_non_existent_dir, "/%s/../oodd_nonexistent/..", c_dir);
+  sprintf(c_non_existent_dirs,
+          "/%s/../ood_nonexistent1_%d/oodd_nonexistent2_%d", c_dir, mypid, mypid);
+  sprintf(c_temp, "/oodd_temp_%d", mypid);
+
+  ASSERT_EQ(0, ceph_mkdir(cmount, c_dir, 0777));
+  ASSERT_EQ(-CEPHFS_EEXIST, ceph_mkdir(cmount, c_dir_dot, 0777));
+  ASSERT_EQ(-CEPHFS_EEXIST, ceph_mkdir(cmount, c_dir_dotdot, 0777));
+  ASSERT_EQ(0, ceph_mkdirs(cmount, c_non_existent_dirs, 0777));
+
+  ASSERT_EQ(-CEPHFS_ENOTEMPTY, ceph_rmdir(cmount, c_dir_dot));
+  ASSERT_EQ(-CEPHFS_ENOTEMPTY, ceph_rmdir(cmount, c_dir_dotdot));
+  // non existent directory should return -CEPHFS_ENOENT
+  ASSERT_EQ(-CEPHFS_ENOENT, ceph_rmdir(cmount, c_non_existent_dir));
+
+  ASSERT_EQ(-CEPHFS_EBUSY, ceph_rename(cmount, c_dir_dot, c_temp));
+  ASSERT_EQ(0, ceph_chdir(cmount, c_dir));
+  ASSERT_EQ(0, ceph_mkdir(cmount, c_temp, 0777));
+  ASSERT_EQ(-CEPHFS_EBUSY, ceph_rename(cmount, c_temp, ".."));
+
+  ceph_shutdown(cmount);
+}
+
+TEST(LibCephFS, Caps_vxattr) {
+  struct ceph_mount_info *cmount;
+  ASSERT_EQ(ceph_create(&cmount, NULL), 0);
+  ASSERT_EQ(ceph_conf_read_file(cmount, NULL), 0);
+  ASSERT_EQ(0, ceph_conf_parse_env(cmount, NULL));
+  ASSERT_EQ(ceph_mount(cmount, NULL), 0);
+
+  char test_caps_vxattr_file[256];
+  char gxattrv[128];
+  int xbuflen = sizeof(gxattrv);
+  pid_t mypid = getpid();
+
+  sprintf(test_caps_vxattr_file, "test_caps_vxattr_%d", mypid);
+  int fd = ceph_open(cmount, test_caps_vxattr_file, O_CREAT, 0666);
+  ASSERT_GT(fd, 0);
+  ceph_close(cmount, fd);
+
+  int alen = ceph_getxattr(cmount, test_caps_vxattr_file, "ceph.caps", (void *)gxattrv, xbuflen);
+  ASSERT_GT(alen, 0);
+  gxattrv[alen] = '\0';
+
+  char caps_regex[] = "pA[sx]*L[sx]*X[sx]*F[sxcrwbal]*/0x[0-9a-fA-f]+";
+  ASSERT_TRUE(regex_match(gxattrv, regex(caps_regex)) == 1);
+  ceph_shutdown(cmount);
+}
+
+TEST(LibCephFS, SnapXattrs) {
+  struct ceph_mount_info *cmount;
+  ASSERT_EQ(ceph_create(&cmount, NULL), 0);
+  ASSERT_EQ(ceph_conf_read_file(cmount, NULL), 0);
+  ASSERT_EQ(0, ceph_conf_parse_env(cmount, NULL));
+  ASSERT_EQ(ceph_mount(cmount, NULL), 0);
+
+  char test_snap_xattr_file[256];
+  char c_temp[PATH_MAX];
+  char gxattrv[128];
+  char gxattrv2[128];
+  int xbuflen = sizeof(gxattrv);
+  pid_t mypid = getpid();
+
+  sprintf(test_snap_xattr_file, "test_snap_xattr_%d", mypid);
+  int fd = ceph_open(cmount, test_snap_xattr_file, O_CREAT, 0666);
+  ASSERT_GT(fd, 0);
+  ceph_close(cmount, fd);
+
+  sprintf(c_temp, "/.snap/test_snap_xattr_snap_%d", mypid);
+  ASSERT_EQ(0, ceph_mkdir(cmount, c_temp, 0777));
+
+  int alen = ceph_getxattr(cmount, c_temp, "ceph.snap.btime", (void *)gxattrv, xbuflen);
+  // xattr value is secs.nsecs (don't assume zero-term)
+  ASSERT_LT(0, alen);
+  ASSERT_LT(alen, xbuflen);
+  gxattrv[alen] = '\0';
+  char *s = strchr(gxattrv, '.');
+  char *q = NULL;
+  ASSERT_NE(q, s);
+  ASSERT_LT(s, gxattrv + alen);
+  ASSERT_EQ('.', *s);
+  *s = '\0';
+  utime_t btime = utime_t(strtoull(gxattrv, NULL, 10), strtoull(s + 1, NULL, 10));
+  *s = '.';  // restore for later strcmp
+
+  // file within the snapshot should carry the same btime
+  sprintf(c_temp, "/.snap/test_snap_xattr_snap_%d/%s", mypid, test_snap_xattr_file);
+
+  int alen2 = ceph_getxattr(cmount, c_temp, "ceph.snap.btime", (void *)gxattrv2, xbuflen);
+  ASSERT_EQ(alen, alen2);
+  ASSERT_EQ(0, strncmp(gxattrv, gxattrv2, alen));
+
+  // non-snap file shouldn't carry the xattr
+  alen = ceph_getxattr(cmount, test_snap_xattr_file, "ceph.snap.btime", (void *)gxattrv2, xbuflen);
+  ASSERT_EQ(-CEPHFS_ENODATA, alen);
+
+  // create a second snapshot
+  sprintf(c_temp, "/.snap/test_snap_xattr_snap2_%d", mypid);
+  ASSERT_EQ(0, ceph_mkdir(cmount, c_temp, 0777));
+
+  // check that the btime for the newer snapshot is > older
+  alen = ceph_getxattr(cmount, c_temp, "ceph.snap.btime", (void *)gxattrv2, xbuflen);
+  ASSERT_LT(0, alen);
+  ASSERT_LT(alen, xbuflen);
+  gxattrv2[alen] = '\0';
+  s = strchr(gxattrv2, '.');
+  ASSERT_NE(q, s);
+  ASSERT_LT(s, gxattrv2 + alen);
+  ASSERT_EQ('.', *s);
+  *s = '\0';
+  utime_t new_btime = utime_t(strtoull(gxattrv2, NULL, 10), strtoull(s + 1, NULL, 10));
+  #ifndef _WIN32
+  // This assertion sometimes fails on Windows, possibly due to the clock precision.
+  ASSERT_LT(btime, new_btime);
+  #endif
+
+  // listxattr() shouldn't return snap.btime vxattr
+  char xattrlist[512];
+  int len = ceph_listxattr(cmount, test_snap_xattr_file, xattrlist, sizeof(xattrlist));
+  ASSERT_GE(sizeof(xattrlist), (size_t)len);
+  char *p = xattrlist;
+  int found = 0;
+  while (len > 0) {
+    if (strcmp(p, "ceph.snap.btime") == 0)
+      found++;
+    len -= strlen(p) + 1;
+    p += strlen(p) + 1;
+  }
+  ASSERT_EQ(found, 0);
+
+  ceph_shutdown(cmount);
+}
+
+TEST(LibCephFS, Lseek) {
+  struct ceph_mount_info *cmount;
+  ASSERT_EQ(0, ceph_create(&cmount, NULL));
+  ASSERT_EQ(0, ceph_conf_read_file(cmount, NULL));
+  ASSERT_EQ(0, ceph_conf_parse_env(cmount, NULL));
+  ASSERT_EQ(0, ceph_mount(cmount, "/"));
+
+  char c_path[1024];
+  sprintf(c_path, "test_lseek_%d", getpid());
+  int fd = ceph_open(cmount, c_path, O_RDWR|O_CREAT|O_TRUNC, 0666);
+  ASSERT_LT(0, fd);
+
+  const char *out_buf = "hello world";
+  size_t size = strlen(out_buf);
+  ASSERT_EQ(ceph_write(cmount, fd, out_buf, size, 0), (int)size);
+
+  /* basic SEEK_SET/END/CUR tests */
+  ASSERT_EQ(0, ceph_lseek(cmount, fd, 0, SEEK_SET));
+  ASSERT_EQ(size, ceph_lseek(cmount, fd, 0, SEEK_END));
+  ASSERT_EQ(0, ceph_lseek(cmount, fd, -size, SEEK_CUR));
+
+  /* Test basic functionality and out of bounds conditions for SEEK_HOLE/DATA */
+#ifdef SEEK_HOLE
+  ASSERT_EQ(size, ceph_lseek(cmount, fd, 0, SEEK_HOLE));
+  ASSERT_EQ(-CEPHFS_ENXIO, ceph_lseek(cmount, fd, -1, SEEK_HOLE));
+  ASSERT_EQ(-CEPHFS_ENXIO, ceph_lseek(cmount, fd, size + 1, SEEK_HOLE));
+#endif
+#ifdef SEEK_DATA
+  ASSERT_EQ(0, ceph_lseek(cmount, fd, 0, SEEK_DATA));
+  ASSERT_EQ(-CEPHFS_ENXIO, ceph_lseek(cmount, fd, -1, SEEK_DATA));
+  ASSERT_EQ(-CEPHFS_ENXIO, ceph_lseek(cmount, fd, size + 1, SEEK_DATA));
+#endif
+
+  ASSERT_EQ(0, ceph_close(cmount, fd));
+  ceph_shutdown(cmount);
+}
+
+TEST(LibCephFS, SnapInfoOnNonSnapshot) {
+  struct ceph_mount_info *cmount;
+  ASSERT_EQ(ceph_create(&cmount, NULL), 0);
+  ASSERT_EQ(ceph_conf_read_file(cmount, NULL), 0);
+  ASSERT_EQ(0, ceph_conf_parse_env(cmount, NULL));
+  ASSERT_EQ(ceph_mount(cmount, NULL), 0);
+
+  struct snap_info info;
+  ASSERT_EQ(-CEPHFS_EINVAL, ceph_get_snap_info(cmount, "/", &info));
+
+  ceph_shutdown(cmount);
+}
+
+TEST(LibCephFS, EmptySnapInfo) {
+  struct ceph_mount_info *cmount;
+  ASSERT_EQ(ceph_create(&cmount, NULL), 0);
+  ASSERT_EQ(ceph_conf_read_file(cmount, NULL), 0);
+  ASSERT_EQ(0, ceph_conf_parse_env(cmount, NULL));
+  ASSERT_EQ(ceph_mount(cmount, NULL), 0);
+
+  char dir_path[64];
+  char snap_path[PATH_MAX];
+  sprintf(dir_path, "/dir0_%d", getpid());
+  sprintf(snap_path, "%s/.snap/snap0_%d", dir_path, getpid());
+
+  ASSERT_EQ(0, ceph_mkdir(cmount, dir_path, 0755));
+  // snapshot without custom metadata
+  ASSERT_EQ(0, ceph_mkdir(cmount, snap_path, 0755));
+
+  struct snap_info info;
+  ASSERT_EQ(0, ceph_get_snap_info(cmount, snap_path, &info));
+  ASSERT_GT(info.id, 0);
+  ASSERT_EQ(info.nr_snap_metadata, 0);
+
+  ASSERT_EQ(0, ceph_rmdir(cmount, snap_path));
+  ASSERT_EQ(0, ceph_rmdir(cmount, dir_path));
+  ceph_shutdown(cmount);
+}
+
+TEST(LibCephFS, SnapInfo) {
+  struct ceph_mount_info *cmount;
+  ASSERT_EQ(ceph_create(&cmount, NULL), 0);
+  ASSERT_EQ(ceph_conf_read_file(cmount, NULL), 0);
+  ASSERT_EQ(0, ceph_conf_parse_env(cmount, NULL));
+  ASSERT_EQ(ceph_mount(cmount, NULL), 0);
+
+  char dir_path[64];
+  char snap_name[64];
+  char snap_path[PATH_MAX];
+  sprintf(dir_path, "/dir0_%d", getpid());
+  sprintf(snap_name, "snap0_%d", getpid());
+  sprintf(snap_path, "%s/.snap/%s", dir_path, snap_name);
+
+  ASSERT_EQ(0, ceph_mkdir(cmount, dir_path, 0755));
+  // snapshot with custom metadata
+  struct snap_metadata snap_meta[] = {{"foo", "bar"},{"this", "that"},{"abcdefg", "12345"}};
+  ASSERT_EQ(0, ceph_mksnap(cmount, dir_path, snap_name, 0755, snap_meta, std::size(snap_meta)));
+
+  struct snap_info info;
+  ASSERT_EQ(0, ceph_get_snap_info(cmount, snap_path, &info));
+  ASSERT_GT(info.id, 0);
+  ASSERT_EQ(info.nr_snap_metadata, std::size(snap_meta));
+  for (size_t i = 0; i < info.nr_snap_metadata; ++i) {
+    auto &k1 = info.snap_metadata[i].key;
+    auto &v1 = info.snap_metadata[i].value;
+    bool found = false;
+    for (size_t j = 0; j < info.nr_snap_metadata; ++j) {
+      auto &k2 = snap_meta[j].key;
+      auto &v2 = snap_meta[j].value;
+      if (strncmp(k1, k2, strlen(k1)) == 0 && strncmp(v1, v2, strlen(v1)) == 0) {
+        found = true;
+        break;
+      }
+    }
+    ASSERT_TRUE(found);
+  }
+  ceph_free_snap_info_buffer(&info);
+
+  ASSERT_EQ(0, ceph_rmsnap(cmount, dir_path, snap_name));
+  ASSERT_EQ(0, ceph_rmdir(cmount, dir_path));
+
+  ceph_shutdown(cmount);
+}
+
+TEST(LibCephFS, LookupInoMDSDir) {
+  struct ceph_mount_info *cmount;
+  ASSERT_EQ(ceph_create(&cmount, NULL), 0);
+  ASSERT_EQ(ceph_conf_read_file(cmount, NULL), 0);
+  ASSERT_EQ(0, ceph_conf_parse_env(cmount, NULL));
+  ASSERT_EQ(ceph_mount(cmount, NULL), 0);
+
+  Inode *inode;
+  auto ino = inodeno_t(0x100); /* rank 0 ~mdsdir */
+  ASSERT_EQ(-CEPHFS_ESTALE, ceph_ll_lookup_inode(cmount, ino, &inode));
+  ino = inodeno_t(0x600); /* rank 0 first stray dir */
+  ASSERT_EQ(-CEPHFS_ESTALE, ceph_ll_lookup_inode(cmount, ino, &inode));
+
+  ceph_shutdown(cmount);
+}
+
+TEST(LibCephFS, LookupVino) {
+  struct ceph_mount_info *cmount;
+  ASSERT_EQ(ceph_create(&cmount, NULL), 0);
+  ASSERT_EQ(ceph_conf_read_file(cmount, NULL), 0);
+  ASSERT_EQ(0, ceph_conf_parse_env(cmount, NULL));
+  ASSERT_EQ(ceph_mount(cmount, NULL), 0);
+
+  char dir_path[64];
+  char snap_name[64];
+  char snapdir_path[128];
+  char snap_path[256];
+  char file_path[PATH_MAX];
+  char snap_file[PATH_MAX];
+  sprintf(dir_path, "/dir0_%d", getpid());
+  sprintf(snap_name, "snap0_%d", getpid());
+  sprintf(file_path, "%s/file_%d", dir_path, getpid());
+  sprintf(snapdir_path, "%s/.snap", dir_path);
+  sprintf(snap_path, "%s/%s", snapdir_path, snap_name);
+  sprintf(snap_file, "%s/file_%d", snap_path, getpid());
+
+  ASSERT_EQ(0, ceph_mkdir(cmount, dir_path, 0755));
+  int fd = ceph_open(cmount, file_path, O_WRONLY|O_CREAT, 0666);
+  ASSERT_LE(0, fd);
+  ASSERT_EQ(0, ceph_close(cmount, fd));
+  ASSERT_EQ(0, ceph_mksnap(cmount, dir_path, snap_name, 0755, nullptr, 0));
+
+  // record vinos for all of them
+  struct ceph_statx stx;
+  ASSERT_EQ(0, ceph_statx(cmount, dir_path, &stx, CEPH_STATX_INO, 0));
+  vinodeno_t dir_vino(stx.stx_ino, stx.stx_dev);
+
+  ASSERT_EQ(0, ceph_statx(cmount, file_path, &stx, CEPH_STATX_INO, 0));
+  vinodeno_t file_vino(stx.stx_ino, stx.stx_dev);
+
+  ASSERT_EQ(0, ceph_statx(cmount, snapdir_path, &stx, CEPH_STATX_INO, 0));
+  vinodeno_t snapdir_vino(stx.stx_ino, stx.stx_dev);
+
+  ASSERT_EQ(0, ceph_statx(cmount, snap_path, &stx, CEPH_STATX_INO, 0));
+  vinodeno_t snap_vino(stx.stx_ino, stx.stx_dev);
+
+  ASSERT_EQ(0, ceph_statx(cmount, snap_file, &stx, CEPH_STATX_INO, 0));
+  vinodeno_t snap_file_vino(stx.stx_ino, stx.stx_dev);
+
+  // Remount
+  ASSERT_EQ(0, ceph_unmount(cmount));
+  ASSERT_EQ(0, ceph_create(&cmount, NULL));
+  ASSERT_EQ(0, ceph_conf_read_file(cmount, NULL));
+  ASSERT_EQ(0, ceph_conf_parse_env(cmount, NULL));
+  ASSERT_EQ(0, ceph_mount(cmount, NULL));
+
+  // Find them all
+  Inode *inode;
+  ASSERT_EQ(0, ceph_ll_lookup_vino(cmount, dir_vino, &inode));
+  ceph_ll_put(cmount, inode);
+  ASSERT_EQ(0, ceph_ll_lookup_vino(cmount, file_vino, &inode));
+  ceph_ll_put(cmount, inode);
+  ASSERT_EQ(0, ceph_ll_lookup_vino(cmount, snapdir_vino, &inode));
+  ceph_ll_put(cmount, inode);
+  ASSERT_EQ(0, ceph_ll_lookup_vino(cmount, snap_vino, &inode));
+  ceph_ll_put(cmount, inode);
+  ASSERT_EQ(0, ceph_ll_lookup_vino(cmount, snap_file_vino, &inode));
+  ceph_ll_put(cmount, inode);
+
+  // cleanup
+  ASSERT_EQ(0, ceph_rmsnap(cmount, dir_path, snap_name));
+  ASSERT_EQ(0, ceph_unlink(cmount, file_path));
+  ASSERT_EQ(0, ceph_rmdir(cmount, dir_path));
+
+  ceph_shutdown(cmount);
+}
+
+TEST(LibCephFS, Openat) {
+  pid_t mypid = getpid();
+  struct ceph_mount_info *cmount;
+  ASSERT_EQ(0, ceph_create(&cmount, NULL));
+  ASSERT_EQ(0, ceph_conf_read_file(cmount, NULL));
+  ASSERT_EQ(0, ceph_conf_parse_env(cmount, NULL));
+  ASSERT_EQ(0, ceph_mount(cmount, "/"));
+
+  char c_rel_dir[64];
+  char c_dir[128];
+  sprintf(c_rel_dir, "open_test_%d", mypid);
+  sprintf(c_dir, "/%s", c_rel_dir);
+  ASSERT_EQ(0, ceph_mkdir(cmount, c_dir, 0777));
+
+  int root_fd = ceph_open(cmount, "/", O_DIRECTORY | O_RDONLY, 0);
+  ASSERT_LE(0, root_fd);
+
+  int dir_fd = ceph_openat(cmount, root_fd, c_rel_dir, O_DIRECTORY | O_RDONLY, 0);
+  ASSERT_LE(0, dir_fd);
+
+  struct ceph_statx stx;
+  ASSERT_EQ(ceph_statxat(cmount, root_fd, c_rel_dir, &stx, 0, 0), 0);
+  ASSERT_EQ(stx.stx_mode & S_IFMT, S_IFDIR);
+
+  char c_rel_path[64];
+  char c_path[256];
+  sprintf(c_rel_path, "created_file_%d", mypid);
+  sprintf(c_path, "%s/created_file_%d", c_dir, mypid);
+  int file_fd = ceph_openat(cmount, dir_fd, c_rel_path, O_RDONLY | O_CREAT, 0666);
+  ASSERT_LE(0, file_fd);
+
+  ASSERT_EQ(ceph_statxat(cmount, dir_fd, c_rel_path, &stx, 0, 0), 0);
+  ASSERT_EQ(stx.stx_mode & S_IFMT, S_IFREG);
+
+  ASSERT_EQ(0, ceph_close(cmount, file_fd));
+  ASSERT_EQ(0, ceph_close(cmount, dir_fd));
+  ASSERT_EQ(0, ceph_close(cmount, root_fd));
+
+  ASSERT_EQ(0, ceph_unlink(cmount, c_path));
+  ASSERT_EQ(0, ceph_rmdir(cmount, c_dir));
+
+  ceph_shutdown(cmount);
+}
+
+TEST(LibCephFS, Statxat) {
+  struct ceph_mount_info *cmount;
+  ASSERT_EQ(ceph_create(&cmount, NULL), 0);
+  ASSERT_EQ(ceph_conf_read_file(cmount, NULL), 0);
+  ASSERT_EQ(0, ceph_conf_parse_env(cmount, NULL));
+  ASSERT_EQ(ceph_mount(cmount, NULL), 0);
+
+  char dir_name[64];
+  char rel_file_name_1[128];
+  char rel_file_name_2[256];
+
+  char dir_path[512];
+  char file_path[1024];
+
+  // relative paths for *at() calls
+  sprintf(dir_name, "dir0_%d", getpid());
+  sprintf(rel_file_name_1, "file_%d", getpid());
+  sprintf(rel_file_name_2, "%s/%s", dir_name, rel_file_name_1);
+
+  sprintf(dir_path, "/%s", dir_name);
+  sprintf(file_path, "%s/%s", dir_path, rel_file_name_1);
+
+  ASSERT_EQ(0, ceph_mkdir(cmount, dir_path, 0755));
+  int fd = ceph_open(cmount, file_path, O_WRONLY|O_CREAT, 0666);
+  ASSERT_LE(0, fd);
+  ASSERT_EQ(0, ceph_close(cmount, fd));
+
+  struct ceph_statx stx;
+
+  // test relative to root
+  fd = ceph_open(cmount, "/", O_DIRECTORY | O_RDONLY, 0);
+  ASSERT_LE(0, fd);
+  ASSERT_EQ(ceph_statxat(cmount, fd, dir_name, &stx, 0, 0), 0);
+  ASSERT_EQ(stx.stx_mode & S_IFMT, S_IFDIR);
+  ASSERT_EQ(ceph_statxat(cmount, fd, rel_file_name_2, &stx, 0, 0), 0);
+  ASSERT_EQ(stx.stx_mode & S_IFMT, S_IFREG);
+  ASSERT_EQ(0, ceph_close(cmount, fd));
+
+  // test relative to dir
+  fd = ceph_open(cmount, dir_path, O_DIRECTORY | O_RDONLY, 0);
+  ASSERT_LE(0, fd);
+  ASSERT_EQ(ceph_statxat(cmount, fd, rel_file_name_1, &stx, 0, 0), 0);
+  ASSERT_EQ(stx.stx_mode & S_IFMT, S_IFREG);
+
+  // delete the dirtree, recreate and verify
+  ASSERT_EQ(0, ceph_unlink(cmount, file_path));
+  ASSERT_EQ(0, ceph_rmdir(cmount, dir_path));
+  ASSERT_EQ(0, ceph_mkdir(cmount, dir_path, 0755));
+  int fd1 = ceph_open(cmount, file_path, O_WRONLY|O_CREAT, 0666);
+  ASSERT_LE(0, fd1);
+  ASSERT_EQ(0, ceph_close(cmount, fd1));
+  ASSERT_EQ(ceph_statxat(cmount, fd, rel_file_name_1, &stx, 0, 0), -CEPHFS_ENOENT);
+  ASSERT_EQ(0, ceph_close(cmount, fd));
+
+  ASSERT_EQ(0, ceph_unlink(cmount, file_path));
+  ASSERT_EQ(0, ceph_rmdir(cmount, dir_path));
+
+  ceph_shutdown(cmount);
+}
+
+TEST(LibCephFS, StatxatATFDCWD) {
+  struct ceph_mount_info *cmount;
+  ASSERT_EQ(ceph_create(&cmount, NULL), 0);
+  ASSERT_EQ(ceph_conf_read_file(cmount, NULL), 0);
+  ASSERT_EQ(0, ceph_conf_parse_env(cmount, NULL));
+  ASSERT_EQ(ceph_mount(cmount, NULL), 0);
+
+  char dir_name[64];
+  char rel_file_name_1[128];
+
+  char dir_path[512];
+  char file_path[1024];
+
+  // relative paths for *at() calls
+  sprintf(dir_name, "dir0_%d", getpid());
+  sprintf(rel_file_name_1, "file_%d", getpid());
+
+  sprintf(dir_path, "/%s", dir_name);
+  sprintf(file_path, "%s/%s", dir_path, rel_file_name_1);
+
+  ASSERT_EQ(0, ceph_mkdir(cmount, dir_path, 0755));
+  int fd = ceph_open(cmount, file_path, O_WRONLY|O_CREAT, 0666);
+  ASSERT_LE(0, fd);
+  ASSERT_EQ(0, ceph_close(cmount, fd));
+
+  struct ceph_statx stx;
+  // chdir and test with CEPHFS_AT_FDCWD
+  ASSERT_EQ(0, ceph_chdir(cmount, dir_path));
+  ASSERT_EQ(ceph_statxat(cmount, CEPHFS_AT_FDCWD, rel_file_name_1, &stx, 0, 0), 0);
+  ASSERT_EQ(stx.stx_mode & S_IFMT, S_IFREG);
+
+  ASSERT_EQ(0, ceph_unlink(cmount, file_path));
+  ASSERT_EQ(0, ceph_rmdir(cmount, dir_path));
+
+  ceph_shutdown(cmount);
+}
+
+TEST(LibCephFS, Fdopendir) {
+  pid_t mypid = getpid();
+
+  struct ceph_mount_info *cmount;
+  ASSERT_EQ(ceph_create(&cmount, NULL), 0);
+  ASSERT_EQ(ceph_conf_read_file(cmount, NULL), 0);
+  ASSERT_EQ(0, ceph_conf_parse_env(cmount, NULL));
+  ASSERT_EQ(ceph_mount(cmount, "/"), 0);
+
+  char foostr[256];
+  sprintf(foostr, "/dir_ls%d", mypid);
+  ASSERT_EQ(ceph_mkdir(cmount, foostr, 0777), 0);
+
+  char bazstr[512];
+  sprintf(bazstr, "%s/elif", foostr);
+  int fd  = ceph_open(cmount, bazstr, O_CREAT|O_RDONLY, 0666);
+  ASSERT_LE(0, fd);
+  ASSERT_EQ(0, ceph_close(cmount, fd));
+
+  fd = ceph_open(cmount, foostr, O_DIRECTORY | O_RDONLY, 0);
+  ASSERT_LE(0, fd);
+  struct ceph_dir_result *ls_dir = NULL;
+  ASSERT_EQ(ceph_fdopendir(cmount, fd, &ls_dir), 0);
+
+  // not guaranteed to get . and .. first, but its a safe assumption in this case
+  struct dirent *result = ceph_readdir(cmount, ls_dir);
+  ASSERT_TRUE(result != NULL);
+  ASSERT_STREQ(result->d_name, ".");
+  result = ceph_readdir(cmount, ls_dir);
+  ASSERT_TRUE(result != NULL);
+  ASSERT_STREQ(result->d_name, "..");
+  result = ceph_readdir(cmount, ls_dir);
+  ASSERT_TRUE(result != NULL);
+  ASSERT_STREQ(result->d_name, "elif");
+
+  ASSERT_TRUE(ceph_readdir(cmount, ls_dir) == NULL);
+
+  ASSERT_EQ(0, ceph_close(cmount, fd));
+  ASSERT_EQ(0, ceph_closedir(cmount, ls_dir));
+  ASSERT_EQ(0, ceph_unlink(cmount, bazstr));
+  ASSERT_EQ(0, ceph_rmdir(cmount, foostr));
+  ceph_shutdown(cmount);
+}
+
+TEST(LibCephFS, FdopendirATFDCWD) {
+  pid_t mypid = getpid();
+
+  struct ceph_mount_info *cmount;
+  ASSERT_EQ(ceph_create(&cmount, NULL), 0);
+  ASSERT_EQ(ceph_conf_read_file(cmount, NULL), 0);
+  ASSERT_EQ(0, ceph_conf_parse_env(cmount, NULL));
+  ASSERT_EQ(ceph_mount(cmount, "/"), 0);
+
+  char foostr[256];
+  sprintf(foostr, "/dir_ls%d", mypid);
+  ASSERT_EQ(ceph_mkdir(cmount, foostr, 0777), 0);
+
+  char bazstr[512];
+  sprintf(bazstr, "%s/elif", foostr);
+  int fd  = ceph_open(cmount, bazstr, O_CREAT|O_RDONLY, 0666);
+  ASSERT_LE(0, fd);
+  ASSERT_EQ(0, ceph_close(cmount, fd));
+
+  ASSERT_EQ(0, ceph_chdir(cmount, foostr));
+  struct ceph_dir_result *ls_dir = NULL;
+  ASSERT_EQ(ceph_fdopendir(cmount, CEPHFS_AT_FDCWD, &ls_dir), 0);
+
+  // not guaranteed to get . and .. first, but its a safe assumption in this case
+  struct dirent *result = ceph_readdir(cmount, ls_dir);
+  ASSERT_TRUE(result != NULL);
+  ASSERT_STREQ(result->d_name, ".");
+  result = ceph_readdir(cmount, ls_dir);
+  ASSERT_TRUE(result != NULL);
+  ASSERT_STREQ(result->d_name, "..");
+  result = ceph_readdir(cmount, ls_dir);
+  ASSERT_TRUE(result != NULL);
+  ASSERT_STREQ(result->d_name, "elif");
+
+  ASSERT_TRUE(ceph_readdir(cmount, ls_dir) == NULL);
+
+  ASSERT_EQ(0, ceph_closedir(cmount, ls_dir));
+  ASSERT_EQ(0, ceph_unlink(cmount, bazstr));
+  ASSERT_EQ(0, ceph_rmdir(cmount, foostr));
+  ceph_shutdown(cmount);
+}
+
+TEST(LibCephFS, FdopendirReaddirTestWithDelete) {
+  pid_t mypid = getpid();
+
+  struct ceph_mount_info *cmount;
+  ASSERT_EQ(ceph_create(&cmount, NULL), 0);
+  ASSERT_EQ(ceph_conf_read_file(cmount, NULL), 0);
+  ASSERT_EQ(0, ceph_conf_parse_env(cmount, NULL));
+  ASSERT_EQ(ceph_mount(cmount, "/"), 0);
+
+  char foostr[256];
+  sprintf(foostr, "/dir_ls%d", mypid);
+  ASSERT_EQ(ceph_mkdir(cmount, foostr, 0777), 0);
+
+  char bazstr[512];
+  sprintf(bazstr, "%s/elif", foostr);
+  int fd  = ceph_open(cmount, bazstr, O_CREAT|O_RDONLY, 0666);
+  ASSERT_LE(0, fd);
+  ASSERT_EQ(0, ceph_close(cmount, fd));
+
+  fd = ceph_open(cmount, foostr, O_DIRECTORY | O_RDONLY, 0);
+  ASSERT_LE(0, fd);
+  struct ceph_dir_result *ls_dir = NULL;
+  ASSERT_EQ(ceph_fdopendir(cmount, fd, &ls_dir), 0);
+
+  ASSERT_EQ(0, ceph_unlink(cmount, bazstr));
+  ASSERT_EQ(0, ceph_rmdir(cmount, foostr));
+
+  // not guaranteed to get . and .. first, but its a safe assumption
+  // in this case. also, note that we may or may not get other
+  // entries.
+  struct dirent *result = ceph_readdir(cmount, ls_dir);
+  ASSERT_TRUE(result != NULL);
+  ASSERT_STREQ(result->d_name, ".");
+  result = ceph_readdir(cmount, ls_dir);
+  ASSERT_TRUE(result != NULL);
+  ASSERT_STREQ(result->d_name, "..");
+
+  ASSERT_EQ(0, ceph_close(cmount, fd));
+  ASSERT_EQ(0, ceph_closedir(cmount, ls_dir));
+  ceph_shutdown(cmount);
+}
+
+TEST(LibCephFS, FdopendirOnNonDir) {
+  pid_t mypid = getpid();
+
+  struct ceph_mount_info *cmount;
+  ASSERT_EQ(ceph_create(&cmount, NULL), 0);
+  ASSERT_EQ(ceph_conf_read_file(cmount, NULL), 0);
+  ASSERT_EQ(0, ceph_conf_parse_env(cmount, NULL));
+  ASSERT_EQ(ceph_mount(cmount, "/"), 0);
+
+  char foostr[256];
+  sprintf(foostr, "/dir_ls%d", mypid);
+  ASSERT_EQ(ceph_mkdir(cmount, foostr, 0777), 0);
+
+  char bazstr[512];
+  sprintf(bazstr, "%s/file", foostr);
+  int fd  = ceph_open(cmount, bazstr, O_CREAT|O_RDONLY, 0666);
+  ASSERT_LE(0, fd);
+
+  struct ceph_dir_result *ls_dir = NULL;
+  ASSERT_EQ(ceph_fdopendir(cmount, fd, &ls_dir), -CEPHFS_ENOTDIR);
+  ASSERT_EQ(0, ceph_close(cmount, fd));
+
+  ASSERT_EQ(0, ceph_unlink(cmount, bazstr));
+  ASSERT_EQ(0, ceph_rmdir(cmount, foostr));
+
+  ceph_shutdown(cmount);
+}
+
+TEST(LibCephFS, Mkdirat) {
+  pid_t mypid = getpid();
+
+  struct ceph_mount_info *cmount;
+  ASSERT_EQ(ceph_create(&cmount, NULL), 0);
+  ASSERT_EQ(ceph_conf_read_file(cmount, NULL), 0);
+  ASSERT_EQ(0, ceph_conf_parse_env(cmount, NULL));
+  ASSERT_EQ(ceph_mount(cmount, "/"), 0);
+
+  char dir_name[128];
+  char dir_path1[256];
+  sprintf(dir_name, "dir_%d", mypid);
+  sprintf(dir_path1, "/%s", dir_name);
+
+  char dir_path2[512];
+  char rel_dir_path2[512];
+  sprintf(dir_path2, "%s/dir_%d", dir_path1, mypid);
+  sprintf(rel_dir_path2, "%s/dir_%d", dir_name, mypid);
+
+  int fd = ceph_open(cmount, "/", O_DIRECTORY | O_RDONLY, 0);
+  ASSERT_LE(0, fd);
+
+  ASSERT_EQ(0, ceph_mkdirat(cmount, fd, dir_name, 0777));
+  ASSERT_EQ(0, ceph_mkdirat(cmount, fd, rel_dir_path2, 0666));
+
+  ASSERT_EQ(0, ceph_close(cmount, fd));
+  ASSERT_EQ(0, ceph_rmdir(cmount, dir_path2));
+  ASSERT_EQ(0, ceph_rmdir(cmount, dir_path1));
+  ceph_shutdown(cmount);
+}
+
+TEST(LibCephFS, MkdiratATFDCWD) {
+  pid_t mypid = getpid();
+
+  struct ceph_mount_info *cmount;
+  ASSERT_EQ(ceph_create(&cmount, NULL), 0);
+  ASSERT_EQ(ceph_conf_read_file(cmount, NULL), 0);
+  ASSERT_EQ(0, ceph_conf_parse_env(cmount, NULL));
+  ASSERT_EQ(ceph_mount(cmount, "/"), 0);
+
+  char dir_name[128];
+  char dir_path1[256];
+  sprintf(dir_name, "dir_%d", mypid);
+  sprintf(dir_path1, "/%s", dir_name);
+
+  char dir_path2[512];
+  sprintf(dir_path2, "%s/dir_%d", dir_path1, mypid);
+
+  ASSERT_EQ(0, ceph_mkdirat(cmount, CEPHFS_AT_FDCWD, dir_name, 0777));
+
+  ASSERT_EQ(0, ceph_chdir(cmount, dir_path1));
+  ASSERT_EQ(0, ceph_mkdirat(cmount, CEPHFS_AT_FDCWD, dir_name, 0666));
+
+  ASSERT_EQ(0, ceph_rmdir(cmount, dir_path2));
+  ASSERT_EQ(0, ceph_rmdir(cmount, dir_path1));
+  ceph_shutdown(cmount);
+}
+
+TEST(LibCephFS, Readlinkat) {
+  pid_t mypid = getpid();
+
+  struct ceph_mount_info *cmount;
+  ASSERT_EQ(ceph_create(&cmount, NULL), 0);
+  ASSERT_EQ(ceph_conf_read_file(cmount, NULL), 0);
+  ASSERT_EQ(0, ceph_conf_parse_env(cmount, NULL));
+  ASSERT_EQ(ceph_mount(cmount, "/"), 0);
+
+  char dir_name[128];
+  char dir_path[256];
+  sprintf(dir_name, "dir_%d", mypid);
+  sprintf(dir_path, "/%s", dir_name);
+  ASSERT_EQ(ceph_mkdir(cmount, dir_path, 0777), 0);
+
+  char file_path[512];
+  char rel_file_path[512];
+  sprintf(rel_file_path, "%s/elif", dir_name);
+  sprintf(file_path, "%s/elif", dir_path);
+  int fd  = ceph_open(cmount, file_path, O_CREAT|O_RDONLY, 0666);
+  ASSERT_LE(0, fd);
+  ASSERT_EQ(0, ceph_close(cmount, fd));
+
+  char link_path[128];
+  char rel_link_path[64];
+  sprintf(rel_link_path, "linkfile_%d", mypid);
+  sprintf(link_path, "/%s", rel_link_path);
+  ASSERT_EQ(0, ceph_symlink(cmount, rel_file_path, link_path));
+
+  fd = ceph_open(cmount, "/", O_DIRECTORY | O_RDONLY, 0);
+  ASSERT_LE(0, fd);
+  size_t target_len = strlen(rel_file_path);
+  char target[target_len+1];
+  ASSERT_EQ(target_len, ceph_readlinkat(cmount, fd, rel_link_path, target, target_len));
+  target[target_len] = '\0';
+  ASSERT_EQ(0, memcmp(target, rel_file_path, target_len));
+
+  ASSERT_EQ(0, ceph_close(cmount, fd));
+  ASSERT_EQ(0, ceph_unlink(cmount, link_path));
+  ASSERT_EQ(0, ceph_unlink(cmount, file_path));
+  ASSERT_EQ(0, ceph_rmdir(cmount, dir_path));
+  ceph_shutdown(cmount);
+}
+
+TEST(LibCephFS, ReadlinkatATFDCWD) {
+  pid_t mypid = getpid();
+
+  struct ceph_mount_info *cmount;
+  ASSERT_EQ(ceph_create(&cmount, NULL), 0);
+  ASSERT_EQ(ceph_conf_read_file(cmount, NULL), 0);
+  ASSERT_EQ(0, ceph_conf_parse_env(cmount, NULL));
+  ASSERT_EQ(ceph_mount(cmount, "/"), 0);
+
+  char dir_name[128];
+  char dir_path[256];
+  sprintf(dir_name, "dir_%d", mypid);
+  sprintf(dir_path, "/%s", dir_name);
+  ASSERT_EQ(ceph_mkdir(cmount, dir_path, 0777), 0);
+
+  char file_path[512];
+  char rel_file_path[512] = "./elif";
+  sprintf(file_path, "%s/elif", dir_path);
+  int fd  = ceph_open(cmount, file_path, O_CREAT|O_RDONLY, 0666);
+  ASSERT_LE(0, fd);
+  ASSERT_EQ(0, ceph_close(cmount, fd));
+
+  char link_path[PATH_MAX];
+  char rel_link_path[1024];
+  sprintf(rel_link_path, "./linkfile_%d", mypid);
+  sprintf(link_path, "%s/%s", dir_path, rel_link_path);
+  ASSERT_EQ(0, ceph_symlink(cmount, rel_file_path, link_path));
+
+  ASSERT_EQ(0, ceph_chdir(cmount, dir_path));
+  size_t target_len = strlen(rel_file_path);
+  char target[target_len+1];
+  ASSERT_EQ(target_len, ceph_readlinkat(cmount, CEPHFS_AT_FDCWD, rel_link_path, target, target_len));
+  target[target_len] = '\0';
+  ASSERT_EQ(0, memcmp(target, rel_file_path, target_len));
+
+  ASSERT_EQ(0, ceph_unlink(cmount, link_path));
+  ASSERT_EQ(0, ceph_unlink(cmount, file_path));
+  ASSERT_EQ(0, ceph_rmdir(cmount, dir_path));
+  ceph_shutdown(cmount);
+}
+
+TEST(LibCephFS, Symlinkat) {
+  pid_t mypid = getpid();
+
+  struct ceph_mount_info *cmount;
+  ASSERT_EQ(ceph_create(&cmount, NULL), 0);
+  ASSERT_EQ(ceph_conf_read_file(cmount, NULL), 0);
+  ASSERT_EQ(0, ceph_conf_parse_env(cmount, NULL));
+  ASSERT_EQ(ceph_mount(cmount, "/"), 0);
+
+  char dir_name[128];
+  char dir_path[256];
+  sprintf(dir_name, "dir_%d", mypid);
+  sprintf(dir_path, "/%s", dir_name);
+  ASSERT_EQ(ceph_mkdir(cmount, dir_path, 0777), 0);
+
+  char file_path[512];
+  char rel_file_path[512];
+  sprintf(rel_file_path, "%s/elif", dir_name);
+  sprintf(file_path, "%s/elif", dir_path);
+
+  int fd  = ceph_open(cmount, file_path, O_CREAT|O_RDONLY, 0666);
+  ASSERT_LE(0, fd);
+  ASSERT_EQ(0, ceph_close(cmount, fd));
+
+  char link_path[128];
+  char rel_link_path[64];
+  sprintf(rel_link_path, "linkfile_%d", mypid);
+  sprintf(link_path, "/%s", rel_link_path);
+
+  fd = ceph_open(cmount, "/", O_DIRECTORY | O_RDONLY, 0);
+  ASSERT_LE(0, fd);
+  ASSERT_EQ(0, ceph_symlinkat(cmount, rel_file_path, fd, rel_link_path));
+
+  size_t target_len = strlen(rel_file_path);
+  char target[target_len+1];
+  ASSERT_EQ(target_len, ceph_readlinkat(cmount, fd, rel_link_path, target, target_len));
+  target[target_len] = '\0';
+  ASSERT_EQ(0, memcmp(target, rel_file_path, target_len));
+
+  ASSERT_EQ(0, ceph_close(cmount, fd));
+  ASSERT_EQ(0, ceph_unlink(cmount, link_path));
+  ASSERT_EQ(0, ceph_unlink(cmount, file_path));
+  ASSERT_EQ(0, ceph_rmdir(cmount, dir_path));
+  ceph_shutdown(cmount);
+}
+
+TEST(LibCephFS, SymlinkatATFDCWD) {
+  pid_t mypid = getpid();
+
+  struct ceph_mount_info *cmount;
+  ASSERT_EQ(ceph_create(&cmount, NULL), 0);
+  ASSERT_EQ(ceph_conf_read_file(cmount, NULL), 0);
+  ASSERT_EQ(0, ceph_conf_parse_env(cmount, NULL));
+  ASSERT_EQ(ceph_mount(cmount, "/"), 0);
+
+  char dir_name[128];
+  char dir_path[256];
+  sprintf(dir_name, "dir_%d", mypid);
+  sprintf(dir_path, "/%s", dir_name);
+  ASSERT_EQ(ceph_mkdir(cmount, dir_path, 0777), 0);
+
+  char file_path[512];
+  char rel_file_path[512] = "./elif";
+  sprintf(file_path, "%s/elif", dir_path);
+  int fd  = ceph_open(cmount, file_path, O_CREAT|O_RDONLY, 0666);
+  ASSERT_LE(0, fd);
+  ASSERT_EQ(0, ceph_close(cmount, fd));
+
+  char link_path[PATH_MAX];
+  char rel_link_path[1024];
+  sprintf(rel_link_path, "./linkfile_%d", mypid);
+  sprintf(link_path, "%s/%s", dir_path, rel_link_path);
+  ASSERT_EQ(0, ceph_chdir(cmount, dir_path));
+  ASSERT_EQ(0, ceph_symlinkat(cmount, rel_file_path, CEPHFS_AT_FDCWD, rel_link_path));
+
+  size_t target_len = strlen(rel_file_path);
+  char target[target_len+1];
+  ASSERT_EQ(target_len, ceph_readlinkat(cmount, CEPHFS_AT_FDCWD, rel_link_path, target, target_len));
+  target[target_len] = '\0';
+  ASSERT_EQ(0, memcmp(target, rel_file_path, target_len));
+
+  ASSERT_EQ(0, ceph_unlink(cmount, link_path));
+  ASSERT_EQ(0, ceph_unlink(cmount, file_path));
+  ASSERT_EQ(0, ceph_rmdir(cmount, dir_path));
+  ceph_shutdown(cmount);
+}
+
+TEST(LibCephFS, Unlinkat) {
+  pid_t mypid = getpid();
+
+  struct ceph_mount_info *cmount;
+  ASSERT_EQ(ceph_create(&cmount, NULL), 0);
+  ASSERT_EQ(ceph_conf_read_file(cmount, NULL), 0);
+  ASSERT_EQ(0, ceph_conf_parse_env(cmount, NULL));
+  ASSERT_EQ(ceph_mount(cmount, "/"), 0);
+
+  char dir_name[128];
+  char dir_path[256];
+  sprintf(dir_name, "dir_%d", mypid);
+  sprintf(dir_path, "/%s", dir_name);
+  ASSERT_EQ(ceph_mkdir(cmount, dir_path, 0777), 0);
+
+  char file_path[512];
+  char rel_file_path[512] = "elif";
+  sprintf(file_path, "%s/elif", dir_path);
+
+  int fd  = ceph_open(cmount, file_path, O_CREAT|O_RDONLY, 0666);
+  ASSERT_LE(0, fd);
+  ASSERT_EQ(0, ceph_close(cmount, fd));
+
+  fd = ceph_open(cmount, dir_path, O_DIRECTORY | O_RDONLY, 0);
+  ASSERT_LE(0, fd);
+  ASSERT_EQ(-CEPHFS_ENOTDIR, ceph_unlinkat(cmount, fd, rel_file_path, AT_REMOVEDIR));
+  ASSERT_EQ(0, ceph_unlinkat(cmount, fd, rel_file_path, 0));
+  ASSERT_EQ(0, ceph_close(cmount, fd));
+
+  fd = ceph_open(cmount, "/", O_DIRECTORY | O_RDONLY, 0);
+  ASSERT_EQ(-CEPHFS_EISDIR, ceph_unlinkat(cmount, fd, dir_name, 0));
+  ASSERT_EQ(0, ceph_unlinkat(cmount, fd, dir_name, AT_REMOVEDIR));
+  ASSERT_LE(0, fd);
+
+  ceph_shutdown(cmount);
+}
+
+TEST(LibCephFS, UnlinkatATFDCWD) {
+  pid_t mypid = getpid();
+
+  struct ceph_mount_info *cmount;
+  ASSERT_EQ(ceph_create(&cmount, NULL), 0);
+  ASSERT_EQ(ceph_conf_read_file(cmount, NULL), 0);
+  ASSERT_EQ(0, ceph_conf_parse_env(cmount, NULL));
+  ASSERT_EQ(ceph_mount(cmount, "/"), 0);
+
+  char dir_name[128];
+  char dir_path[256];
+  sprintf(dir_name, "dir_%d", mypid);
+  sprintf(dir_path, "/%s", dir_name);
+  ASSERT_EQ(ceph_mkdir(cmount, dir_path, 0777), 0);
+
+  char file_path[512];
+  char rel_file_path[512] = "elif";
+  sprintf(file_path, "%s/elif", dir_path);
+
+  int fd  = ceph_open(cmount, file_path, O_CREAT|O_RDONLY, 0666);
+  ASSERT_LE(0, fd);
+  ASSERT_EQ(0, ceph_close(cmount, fd));
+
+  ASSERT_EQ(0, ceph_chdir(cmount, dir_path));
+  ASSERT_EQ(-CEPHFS_ENOTDIR, ceph_unlinkat(cmount, CEPHFS_AT_FDCWD, rel_file_path, AT_REMOVEDIR));
+  ASSERT_EQ(0, ceph_unlinkat(cmount, CEPHFS_AT_FDCWD, rel_file_path, 0));
+
+  ASSERT_EQ(0, ceph_chdir(cmount, "/"));
+  ASSERT_EQ(-CEPHFS_EISDIR, ceph_unlinkat(cmount, CEPHFS_AT_FDCWD, dir_name, 0));
+  ASSERT_EQ(0, ceph_unlinkat(cmount, CEPHFS_AT_FDCWD, dir_name, AT_REMOVEDIR));
+
+  ceph_shutdown(cmount);
+}
+
+TEST(LibCephFS, Chownat) {
+  pid_t mypid = getpid();
+
+  struct ceph_mount_info *cmount;
+  ASSERT_EQ(ceph_create(&cmount, NULL), 0);
+  ASSERT_EQ(ceph_conf_read_file(cmount, NULL), 0);
+  ASSERT_EQ(0, ceph_conf_parse_env(cmount, NULL));
+  ASSERT_EQ(ceph_mount(cmount, "/"), 0);
+
+  char dir_name[128];
+  char dir_path[256];
+  sprintf(dir_name, "dir_%d", mypid);
+  sprintf(dir_path, "/%s", dir_name);
+  ASSERT_EQ(ceph_mkdir(cmount, dir_path, 0777), 0);
+
+  char file_path[512];
+  char rel_file_path[512] = "elif";
+  sprintf(file_path, "%s/elif", dir_path);
+  int fd = ceph_open(cmount, file_path, O_CREAT|O_RDWR, 0666);
+  ASSERT_LE(0, fd);
+
+  // set perms to readable and writeable only by owner
+  ASSERT_EQ(ceph_fchmod(cmount, fd, 0600), 0);
+  ceph_close(cmount, fd);
+
+  fd = ceph_open(cmount, dir_path, O_DIRECTORY | O_RDONLY, 0);
+  // change ownership to nobody -- we assume nobody exists and id is always 65534
+  ASSERT_EQ(ceph_conf_set(cmount, "client_permissions", "0"), 0);
+  ASSERT_EQ(ceph_chownat(cmount, fd, rel_file_path, 65534, 65534, 0), 0);
+  ASSERT_EQ(ceph_conf_set(cmount, "client_permissions", "1"), 0);
+  ceph_close(cmount, fd);
+
+  // "nobody" will be ignored on Windows
+  #ifndef _WIN32
+  fd = ceph_open(cmount, file_path, O_RDWR, 0);
+  ASSERT_EQ(fd, -CEPHFS_EACCES);
+  #endif
+
+  ASSERT_EQ(ceph_conf_set(cmount, "client_permissions", "0"), 0);
+  ASSERT_EQ(0, ceph_unlink(cmount, file_path));
+  ASSERT_EQ(ceph_conf_set(cmount, "client_permissions", "1"), 0);
+  ASSERT_EQ(0, ceph_rmdir(cmount, dir_path));
+  ceph_shutdown(cmount);
+}
+
+TEST(LibCephFS, ChownatATFDCWD) {
+  pid_t mypid = getpid();
+
+  struct ceph_mount_info *cmount;
+  ASSERT_EQ(ceph_create(&cmount, NULL), 0);
+  ASSERT_EQ(ceph_conf_read_file(cmount, NULL), 0);
+  ASSERT_EQ(0, ceph_conf_parse_env(cmount, NULL));
+  ASSERT_EQ(ceph_mount(cmount, "/"), 0);
+
+  char dir_name[128];
+  char dir_path[256];
+  sprintf(dir_name, "dir_%d", mypid);
+  sprintf(dir_path, "/%s", dir_name);
+  ASSERT_EQ(ceph_mkdir(cmount, dir_path, 0777), 0);
+
+  char file_path[512];
+  char rel_file_path[512] = "elif";
+  sprintf(file_path, "%s/elif", dir_path);
+  int fd = ceph_open(cmount, file_path, O_CREAT|O_RDWR, 0666);
+  ASSERT_LE(0, fd);
+
+  // set perms to readable and writeable only by owner
+  ASSERT_EQ(ceph_fchmod(cmount, fd, 0600), 0);
+  ceph_close(cmount, fd);
+
+  ASSERT_EQ(0, ceph_chdir(cmount, dir_path));
+  // change ownership to nobody -- we assume nobody exists and id is always 65534
+  ASSERT_EQ(ceph_conf_set(cmount, "client_permissions", "0"), 0);
+  ASSERT_EQ(ceph_chownat(cmount, CEPHFS_AT_FDCWD, rel_file_path, 65534, 65534, 0), 0);
+  ASSERT_EQ(ceph_conf_set(cmount, "client_permissions", "1"), 0);
+
+  // "nobody" will be ignored on Windows
+  #ifndef _WIN32
+  fd = ceph_open(cmount, file_path, O_RDWR, 0);
+  ASSERT_EQ(fd, -CEPHFS_EACCES);
+  #endif
+
+  ASSERT_EQ(ceph_conf_set(cmount, "client_permissions", "0"), 0);
+  ASSERT_EQ(0, ceph_unlink(cmount, file_path));
+  ASSERT_EQ(ceph_conf_set(cmount, "client_permissions", "1"), 0);
+  ASSERT_EQ(0, ceph_rmdir(cmount, dir_path));
+  ceph_shutdown(cmount);
+}
+
+TEST(LibCephFS, Chmodat) {
+  pid_t mypid = getpid();
+
+  struct ceph_mount_info *cmount;
+  ASSERT_EQ(ceph_create(&cmount, NULL), 0);
+  ASSERT_EQ(ceph_conf_read_file(cmount, NULL), 0);
+  ASSERT_EQ(0, ceph_conf_parse_env(cmount, NULL));
+  ASSERT_EQ(ceph_mount(cmount, "/"), 0);
+
+  char dir_name[128];
+  char dir_path[256];
+  sprintf(dir_name, "dir_%d", mypid);
+  sprintf(dir_path, "/%s", dir_name);
+  ASSERT_EQ(ceph_mkdir(cmount, dir_path, 0777), 0);
+
+  char file_path[512];
+  char rel_file_path[512] = "elif";
+  sprintf(file_path, "%s/elif", dir_path);
+  int fd = ceph_open(cmount, file_path, O_CREAT|O_RDWR, 0666);
+  ASSERT_LE(0, fd);
+  const char *bytes = "foobarbaz";
+  ASSERT_EQ(ceph_write(cmount, fd, bytes, strlen(bytes), 0), (int)strlen(bytes));
+  ASSERT_EQ(0, ceph_close(cmount, fd));
+
+  fd = ceph_open(cmount, dir_path, O_DIRECTORY | O_RDONLY, 0);
+
+  // set perms to read but can't write
+  ASSERT_EQ(ceph_chmodat(cmount, fd, rel_file_path, 0400, 0), 0);
+  ASSERT_EQ(ceph_open(cmount, file_path, O_RDWR, 0), -CEPHFS_EACCES);
+
+  // reset back to writeable
+  ASSERT_EQ(ceph_chmodat(cmount, fd, rel_file_path, 0600, 0), 0);
+  int fd2 = ceph_open(cmount, file_path, O_RDWR, 0);
+  ASSERT_LE(0, fd2);
+
+  ASSERT_EQ(0, ceph_close(cmount, fd2));
+  ASSERT_EQ(0, ceph_close(cmount, fd));
+
+  ASSERT_EQ(0, ceph_unlink(cmount, file_path));
+  ASSERT_EQ(0, ceph_rmdir(cmount, dir_path));
+  ceph_shutdown(cmount);
+}
+
+TEST(LibCephFS, ChmodatATFDCWD) {
+  pid_t mypid = getpid();
+
+  struct ceph_mount_info *cmount;
+  ASSERT_EQ(ceph_create(&cmount, NULL), 0);
+  ASSERT_EQ(ceph_conf_read_file(cmount, NULL), 0);
+  ASSERT_EQ(0, ceph_conf_parse_env(cmount, NULL));
+  ASSERT_EQ(ceph_mount(cmount, "/"), 0);
+
+  char dir_name[128];
+  char dir_path[256];
+  sprintf(dir_name, "dir_%d", mypid);
+  sprintf(dir_path, "/%s", dir_name);
+  ASSERT_EQ(ceph_mkdir(cmount, dir_path, 0777), 0);
+
+  char file_path[512];
+  char rel_file_path[512] = "elif";
+  sprintf(file_path, "%s/elif", dir_path);
+  int fd = ceph_open(cmount, file_path, O_CREAT|O_RDWR, 0666);
+  ASSERT_LE(0, fd);
+  const char *bytes = "foobarbaz";
+  ASSERT_EQ(ceph_write(cmount, fd, bytes, strlen(bytes), 0), (int)strlen(bytes));
+  ASSERT_EQ(0, ceph_close(cmount, fd));
+
+  // set perms to read but can't write
+  ASSERT_EQ(0, ceph_chdir(cmount, dir_path));
+  ASSERT_EQ(ceph_chmodat(cmount, CEPHFS_AT_FDCWD, rel_file_path, 0400, 0), 0);
+  ASSERT_EQ(ceph_open(cmount, file_path, O_RDWR, 0), -CEPHFS_EACCES);
+
+  // reset back to writeable
+  ASSERT_EQ(ceph_chmodat(cmount, CEPHFS_AT_FDCWD, rel_file_path, 0600, 0), 0);
+  int fd2 = ceph_open(cmount, file_path, O_RDWR, 0);
+  ASSERT_LE(0, fd2);
+  ASSERT_EQ(0, ceph_close(cmount, fd2));
+
+  ASSERT_EQ(0, ceph_unlink(cmount, file_path));
+  ASSERT_EQ(0, ceph_rmdir(cmount, dir_path));
+  ceph_shutdown(cmount);
+}
+
+TEST(LibCephFS, Utimensat) {
+  pid_t mypid = getpid();
+
+  struct ceph_mount_info *cmount;
+  ASSERT_EQ(ceph_create(&cmount, NULL), 0);
+  ASSERT_EQ(ceph_conf_read_file(cmount, NULL), 0);
+  ASSERT_EQ(0, ceph_conf_parse_env(cmount, NULL));
+  ASSERT_EQ(ceph_mount(cmount, NULL), 0);
+
+  char dir_name[128];
+  char dir_path[256];
+  sprintf(dir_name, "dir_%d", mypid);
+  sprintf(dir_path, "/%s", dir_name);
+  ASSERT_EQ(ceph_mkdir(cmount, dir_path, 0777), 0);
+
+  char file_path[512];
+  char rel_file_path[512] = "elif";
+  sprintf(file_path, "%s/elif", dir_path);
+  int fd = ceph_open(cmount, file_path, O_CREAT|O_RDWR, 0666);
+  ASSERT_LE(0, fd);
+
+  struct timespec times[2];
+  get_current_time_timespec(times);
+
+  fd = ceph_open(cmount, dir_path, O_DIRECTORY | O_RDONLY, 0);
+  ASSERT_LE(0, fd);
+  EXPECT_EQ(0, ceph_utimensat(cmount, fd, rel_file_path, times, 0));
+  ceph_close(cmount, fd);
+
+  struct ceph_statx stx;
+  ASSERT_EQ(ceph_statx(cmount, file_path, &stx,
+                       CEPH_STATX_MTIME|CEPH_STATX_ATIME, 0), 0);
+  ASSERT_EQ(utime_t(stx.stx_atime), utime_t(times[0]));
+  ASSERT_EQ(utime_t(stx.stx_mtime), utime_t(times[1]));
+
+  ASSERT_EQ(0, ceph_unlink(cmount, file_path));
+  ASSERT_EQ(0, ceph_rmdir(cmount, dir_path));
+  ceph_shutdown(cmount);
+}
+
+TEST(LibCephFS, UtimensatATFDCWD) {
+  pid_t mypid = getpid();
+
+  struct ceph_mount_info *cmount;
+  ASSERT_EQ(ceph_create(&cmount, NULL), 0);
+  ASSERT_EQ(ceph_conf_read_file(cmount, NULL), 0);
+  ASSERT_EQ(0, ceph_conf_parse_env(cmount, NULL));
+  ASSERT_EQ(ceph_mount(cmount, NULL), 0);
+
+  char dir_name[128];
+  char dir_path[256];
+  sprintf(dir_name, "dir_%d", mypid);
+  sprintf(dir_path, "/%s", dir_name);
+  ASSERT_EQ(ceph_mkdir(cmount, dir_path, 0777), 0);
+
+  char file_path[512];
+  char rel_file_path[512] = "elif";
+  sprintf(file_path, "%s/elif", dir_path);
+  int fd = ceph_open(cmount, file_path, O_CREAT|O_RDWR, 0666);
+  ASSERT_LE(0, fd);
+
+  struct timespec times[2];
+  get_current_time_timespec(times);
+
+  ASSERT_EQ(0, ceph_chdir(cmount, dir_path));
+  EXPECT_EQ(0, ceph_utimensat(cmount, CEPHFS_AT_FDCWD, rel_file_path, times, 0));
+
+  struct ceph_statx stx;
+  ASSERT_EQ(ceph_statx(cmount, file_path, &stx,
+                       CEPH_STATX_MTIME|CEPH_STATX_ATIME, 0), 0);
+  ASSERT_EQ(utime_t(stx.stx_atime), utime_t(times[0]));
+  ASSERT_EQ(utime_t(stx.stx_mtime), utime_t(times[1]));
+
+  ASSERT_EQ(0, ceph_unlink(cmount, file_path));
+  ASSERT_EQ(0, ceph_rmdir(cmount, dir_path));
+  ceph_shutdown(cmount);
+}
+
+TEST(LibCephFS, LookupMdsPrivateInos) {
+  struct ceph_mount_info *cmount;
+  ASSERT_EQ(ceph_create(&cmount, NULL), 0);
+  ASSERT_EQ(ceph_conf_read_file(cmount, NULL), 0);
+  ASSERT_EQ(0, ceph_conf_parse_env(cmount, NULL));
+  ASSERT_EQ(ceph_mount(cmount, NULL), 0);
+
+  Inode *inode;
+  for (int ino = 0; ino < MDS_INO_SYSTEM_BASE; ino++) {
+    if (MDS_IS_PRIVATE_INO(ino)) {
+      ASSERT_EQ(-CEPHFS_ESTALE, ceph_ll_lookup_inode(cmount, ino, &inode));
+    } else if (ino == CEPH_INO_ROOT || ino == CEPH_INO_GLOBAL_SNAPREALM) {
+      ASSERT_EQ(0, ceph_ll_lookup_inode(cmount, ino, &inode));
+      ceph_ll_put(cmount, inode);
+    } else if (ino == CEPH_INO_LOST_AND_FOUND) {
+      // the ino 3 will only exists after the recovery tool ran, so
+      // it may return -CEPHFS_ESTALE with a fresh fs cluster
+      int r = ceph_ll_lookup_inode(cmount, ino, &inode);
+      if (r == 0) {
+        ceph_ll_put(cmount, inode);
+      } else {
+        ASSERT_TRUE(r == -CEPHFS_ESTALE);
+      }
+    } else {
+      // currently the ino 0 and 4~99 is not useded yet.
+      ASSERT_EQ(-CEPHFS_ESTALE, ceph_ll_lookup_inode(cmount, ino, &inode));
+    }
+  }
+
+  ceph_shutdown(cmount);
+}
+
+TEST(LibCephFS, SetMountTimeoutPostMount) {
+  struct ceph_mount_info *cmount;
+  ASSERT_EQ(ceph_create(&cmount, NULL), 0);
+  ASSERT_EQ(ceph_conf_read_file(cmount, NULL), 0);
+  ASSERT_EQ(0, ceph_conf_parse_env(cmount, NULL));
+  ASSERT_EQ(ceph_mount(cmount, NULL), 0);
+
+  ASSERT_EQ(-CEPHFS_EINVAL, ceph_set_mount_timeout(cmount, 5));
+  ceph_shutdown(cmount);
+}
+
+TEST(LibCephFS, SetMountTimeout) {
+  struct ceph_mount_info *cmount;
+  ASSERT_EQ(ceph_create(&cmount, NULL), 0);
+  ASSERT_EQ(ceph_conf_read_file(cmount, NULL), 0);
+  ASSERT_EQ(0, ceph_conf_parse_env(cmount, NULL));
+  ASSERT_EQ(0, ceph_set_mount_timeout(cmount, 5));
+  ASSERT_EQ(ceph_mount(cmount, NULL), 0);
+  ceph_shutdown(cmount);
+}
+
+TEST(LibCephFS, FsCrypt) {
+  struct ceph_mount_info *cmount;
+  ASSERT_EQ(ceph_create(&cmount, NULL), 0);
+  ASSERT_EQ(ceph_conf_read_file(cmount, NULL), 0);
+  ASSERT_EQ(0, ceph_conf_parse_env(cmount, NULL));
+  ASSERT_EQ(ceph_mount(cmount, NULL), 0);
+
+  char test_xattr_file[NAME_MAX];
+  sprintf(test_xattr_file, "test_fscrypt_%d", getpid());
+  int fd = ceph_open(cmount, test_xattr_file, O_RDWR|O_CREAT, 0666);
+  ASSERT_GT(fd, 0);
+
+  ASSERT_EQ(0, ceph_fsetxattr(cmount, fd, "ceph.fscrypt.auth", "foo", 3, CEPH_XATTR_CREATE));
+  ASSERT_EQ(0, ceph_fsetxattr(cmount, fd, "ceph.fscrypt.file", "foo", 3, CEPH_XATTR_CREATE));
+
+  char buf[64];
+  ASSERT_EQ(3, ceph_fgetxattr(cmount, fd, "ceph.fscrypt.auth", buf, sizeof(buf)));
+  ASSERT_EQ(3, ceph_fgetxattr(cmount, fd, "ceph.fscrypt.file", buf, sizeof(buf)));
+  ASSERT_EQ(0, ceph_close(cmount, fd));
+
+  ASSERT_EQ(0, ceph_unmount(cmount));
+  ASSERT_EQ(0, ceph_mount(cmount, NULL));
+
+  fd = ceph_open(cmount, test_xattr_file, O_RDWR, 0666);
+  ASSERT_GT(fd, 0);
+  ASSERT_EQ(3, ceph_fgetxattr(cmount, fd, "ceph.fscrypt.auth", buf, sizeof(buf)));
+  ASSERT_EQ(3, ceph_fgetxattr(cmount, fd, "ceph.fscrypt.file", buf, sizeof(buf)));
+
+  ASSERT_EQ(0, ceph_close(cmount, fd));
+  ASSERT_EQ(0, ceph_unmount(cmount));
+  ceph_shutdown(cmount);
+}
+
+TEST(LibCephFS, SnapdirAttrs) {
+  struct ceph_mount_info *cmount;
+  ASSERT_EQ(ceph_create(&cmount, NULL), 0);
+  ASSERT_EQ(ceph_conf_read_file(cmount, NULL), 0);
+  ASSERT_EQ(0, ceph_conf_parse_env(cmount, NULL));
+  ASSERT_EQ(ceph_mount(cmount, NULL), 0);
+
+  char dir_name[128];
+  char dir_path[256];
+  char snap_dir_path[512];
+
+  pid_t mypid = getpid();
+  sprintf(dir_name, "dir_%d", mypid);
+  sprintf(dir_path, "/%s", dir_name);
+  sprintf(snap_dir_path, "%s/.snap", dir_path);
+
+  Inode *dir, *root;
+  struct ceph_statx stx_dir;
+  struct ceph_statx stx_snap_dir;
+  struct ceph_statx stx_root_snap_dir;
+  UserPerm *perms = ceph_mount_perms(cmount);
+
+  ASSERT_EQ(ceph_ll_lookup_root(cmount, &root), 0);
+  ASSERT_EQ(ceph_ll_mkdir(cmount, root, dir_name, 0755, &dir, &stx_dir, 0, 0, perms), 0);
+
+  ASSERT_EQ(ceph_statx(cmount, dir_path, &stx_dir,
+                       CEPH_STATX_MTIME|CEPH_STATX_ATIME|CEPH_STATX_MODE|CEPH_STATX_MODE|CEPH_STATX_GID|CEPH_STATX_VERSION, 0), 0);
+  ASSERT_EQ(ceph_statx(cmount, snap_dir_path, &stx_snap_dir,
+                       CEPH_STATX_MTIME|CEPH_STATX_ATIME|CEPH_STATX_MODE|CEPH_STATX_MODE|CEPH_STATX_GID|CEPH_STATX_VERSION, 0), 0);
+  ASSERT_EQ(ceph_statx(cmount, "/.snap", &stx_root_snap_dir,
+                       CEPH_STATX_MTIME|CEPH_STATX_ATIME|CEPH_STATX_MODE|CEPH_STATX_MODE|CEPH_STATX_GID|CEPH_STATX_VERSION, 0), 0);
+
+  // these should match the parent directories attrs
+  ASSERT_EQ(stx_dir.stx_mode, stx_snap_dir.stx_mode);
+  ASSERT_EQ(stx_dir.stx_uid, stx_snap_dir.stx_uid);
+  ASSERT_EQ(stx_dir.stx_gid, stx_snap_dir.stx_gid);
+  ASSERT_EQ(utime_t(stx_dir.stx_atime), utime_t(stx_snap_dir.stx_atime));
+  // these should match the closest snaprealm ancestor (root in this
+  // case) attrs
+  ASSERT_EQ(utime_t(stx_root_snap_dir.stx_mtime), utime_t(stx_snap_dir.stx_mtime));
+  ASSERT_EQ(utime_t(stx_root_snap_dir.stx_ctime), utime_t(stx_snap_dir.stx_ctime));
+  ASSERT_EQ(stx_root_snap_dir.stx_version, stx_snap_dir.stx_version);
+
+  // chown  -- for this we need to be "root"
+  UserPerm *rootcred = ceph_userperm_new(0, 0, 0, NULL);
+  ASSERT_TRUE(rootcred);
+  stx_dir.stx_uid++;
+  stx_dir.stx_gid++;
+  ASSERT_EQ(ceph_ll_setattr(cmount, dir, &stx_dir, CEPH_SETATTR_UID|CEPH_SETATTR_GID, rootcred), 0);
+
+  memset(&stx_dir, 0, sizeof(stx_dir));
+  memset(&stx_snap_dir, 0, sizeof(stx_snap_dir));
+
+  ASSERT_EQ(ceph_statx(cmount, dir_path, &stx_dir,
+                       CEPH_STATX_MTIME|CEPH_STATX_ATIME|CEPH_STATX_MODE|CEPH_STATX_MODE|CEPH_STATX_GID|CEPH_STATX_VERSION, 0), 0);
+  ASSERT_EQ(ceph_statx(cmount, snap_dir_path, &stx_snap_dir,
+                       CEPH_STATX_MTIME|CEPH_STATX_ATIME|CEPH_STATX_MODE|CEPH_STATX_MODE|CEPH_STATX_GID|CEPH_STATX_VERSION, 0), 0);
+
+  ASSERT_EQ(stx_dir.stx_mode, stx_snap_dir.stx_mode);
+  ASSERT_EQ(stx_dir.stx_uid, stx_snap_dir.stx_uid);
+  ASSERT_EQ(stx_dir.stx_gid, stx_snap_dir.stx_gid);
+  ASSERT_EQ(utime_t(stx_dir.stx_atime), utime_t(stx_snap_dir.stx_atime));
+  ASSERT_EQ(utime_t(stx_root_snap_dir.stx_mtime), utime_t(stx_snap_dir.stx_mtime));
+  ASSERT_EQ(utime_t(stx_root_snap_dir.stx_ctime), utime_t(stx_snap_dir.stx_ctime));
+  ASSERT_EQ(stx_root_snap_dir.stx_version, stx_snap_dir.stx_version);
+
+  ASSERT_EQ(ceph_ll_rmdir(cmount, root, dir_name, rootcred), 0);
+  ASSERT_EQ(0, ceph_unmount(cmount));
+  ceph_shutdown(cmount);
+}
+
+TEST(LibCephFS, SnapdirAttrsOnSnapCreate) {
+  struct ceph_mount_info *cmount;
+  ASSERT_EQ(ceph_create(&cmount, NULL), 0);
+  ASSERT_EQ(ceph_conf_read_file(cmount, NULL), 0);
+  ASSERT_EQ(0, ceph_conf_parse_env(cmount, NULL));
+  ASSERT_EQ(ceph_mount(cmount, NULL), 0);
+
+  char dir_name[128];
+  char dir_path[256];
+  char snap_dir_path[512];
+
+  pid_t mypid = getpid();
+  sprintf(dir_name, "dir_%d", mypid);
+  sprintf(dir_path, "/%s", dir_name);
+  sprintf(snap_dir_path, "%s/.snap", dir_path);
+
+  ASSERT_EQ(ceph_mkdir(cmount, dir_path, 0777), 0);
+
+  struct ceph_statx stx_dir;
+  struct ceph_statx stx_snap_dir;
+  struct ceph_statx stx_root_snap_dir;
+  ASSERT_EQ(ceph_statx(cmount, dir_path, &stx_dir, CEPH_STATX_MTIME|CEPH_STATX_CTIME|CEPH_STATX_VERSION, 0), 0);
+  ASSERT_EQ(ceph_statx(cmount, snap_dir_path, &stx_snap_dir, CEPH_STATX_MTIME|CEPH_STATX_CTIME|CEPH_STATX_VERSION, 0), 0);
+  ASSERT_EQ(ceph_statx(cmount, "/.snap", &stx_root_snap_dir, CEPH_STATX_MTIME|CEPH_STATX_CTIME|CEPH_STATX_VERSION, 0), 0);
+  ASSERT_EQ(utime_t(stx_root_snap_dir.stx_mtime), utime_t(stx_snap_dir.stx_mtime));
+  ASSERT_EQ(utime_t(stx_root_snap_dir.stx_ctime), utime_t(stx_snap_dir.stx_ctime));
+  ASSERT_EQ(stx_root_snap_dir.stx_version, stx_snap_dir.stx_version);
+
+  char snap_path[1024];
+  sprintf(snap_path, "%s/snap_a", snap_dir_path);
+  ASSERT_EQ(ceph_mkdir(cmount, snap_path, 0777), 0);
+
+  struct ceph_statx stx_snap_dir_1;
+  ASSERT_EQ(ceph_statx(cmount, snap_dir_path, &stx_snap_dir_1, CEPH_STATX_MTIME|CEPH_STATX_CTIME|CEPH_STATX_VERSION, 0), 0);
+  ASSERT_LT(utime_t(stx_root_snap_dir.stx_mtime), utime_t(stx_snap_dir_1.stx_mtime));
+  ASSERT_LT(utime_t(stx_root_snap_dir.stx_ctime), utime_t(stx_snap_dir_1.stx_ctime));
+  ASSERT_LT(stx_root_snap_dir.stx_version, stx_snap_dir_1.stx_version);
+
+  ASSERT_EQ(0, ceph_rmdir(cmount, snap_path));
+  ASSERT_EQ(0, ceph_rmdir(cmount, dir_path));
+  ASSERT_EQ(0, ceph_unmount(cmount));
+  ceph_shutdown(cmount);
+}
+
+
+TEST(LibCephFS, SnapdirAttrsOnSnapDelete) {
+  struct ceph_mount_info *cmount;
+  ASSERT_EQ(ceph_create(&cmount, NULL), 0);
+  ASSERT_EQ(ceph_conf_read_file(cmount, NULL), 0);
+  ASSERT_EQ(0, ceph_conf_parse_env(cmount, NULL));
+  ASSERT_EQ(ceph_mount(cmount, NULL), 0);
+
+  char dir_name[128];
+  char dir_path[256];
+  char snap_dir_path[512];
+
+  pid_t mypid = getpid();
+  sprintf(dir_name, "dir_%d", mypid);
+  sprintf(dir_path, "/%s", dir_name);
+  sprintf(snap_dir_path, "%s/.snap", dir_path);
+
+  ASSERT_EQ(ceph_mkdir(cmount, dir_path, 0777), 0);
+
+  struct ceph_statx stx_dir;
+  struct ceph_statx stx_snap_dir;
+  struct ceph_statx stx_root_snap_dir;
+  ASSERT_EQ(ceph_statx(cmount, dir_path, &stx_dir, CEPH_STATX_MTIME|CEPH_STATX_CTIME|CEPH_STATX_VERSION, 0), 0);
+  ASSERT_EQ(ceph_statx(cmount, snap_dir_path, &stx_snap_dir, CEPH_STATX_MTIME|CEPH_STATX_CTIME|CEPH_STATX_VERSION, 0), 0);
+  ASSERT_EQ(ceph_statx(cmount, "/.snap", &stx_root_snap_dir, CEPH_STATX_MTIME|CEPH_STATX_CTIME|CEPH_STATX_VERSION, 0), 0);
+  ASSERT_EQ(utime_t(stx_root_snap_dir.stx_mtime), utime_t(stx_snap_dir.stx_mtime));
+  ASSERT_EQ(utime_t(stx_root_snap_dir.stx_ctime), utime_t(stx_snap_dir.stx_mtime));
+  ASSERT_EQ(stx_root_snap_dir.stx_version, stx_snap_dir.stx_version);
+
+  char snap_path[1024];
+  sprintf(snap_path, "%s/snap_a", snap_dir_path);
+  ASSERT_EQ(ceph_mkdir(cmount, snap_path, 0777), 0);
+
+  struct ceph_statx stx_snap_dir_1;
+  ASSERT_EQ(ceph_statx(cmount, snap_dir_path, &stx_snap_dir_1, CEPH_STATX_MTIME|CEPH_STATX_CTIME|CEPH_STATX_VERSION, 0), 0);
+  ASSERT_LT(utime_t(stx_root_snap_dir.stx_mtime), utime_t(stx_snap_dir_1.stx_mtime));
+  ASSERT_LT(utime_t(stx_root_snap_dir.stx_ctime), utime_t(stx_snap_dir_1.stx_ctime));
+  ASSERT_LT(stx_root_snap_dir.stx_version, stx_snap_dir_1.stx_version);
+
+  ASSERT_EQ(0, ceph_rmdir(cmount, snap_path));
+
+  struct ceph_statx stx_snap_dir_2;
+  ASSERT_EQ(ceph_statx(cmount, snap_dir_path, &stx_snap_dir_2, CEPH_STATX_MTIME|CEPH_STATX_CTIME|CEPH_STATX_VERSION, 0), 0);
+  ASSERT_LT(utime_t(stx_snap_dir_1.stx_mtime), utime_t(stx_snap_dir_2.stx_mtime));
+  ASSERT_LT(utime_t(stx_snap_dir_1.stx_ctime), utime_t(stx_snap_dir_2.stx_ctime));
+  ASSERT_LT(stx_snap_dir_1.stx_version, stx_snap_dir_2.stx_version);
+
+  ASSERT_EQ(0, ceph_rmdir(cmount, dir_path));
+  ASSERT_EQ(0, ceph_unmount(cmount));
+  ceph_shutdown(cmount);
+}
+
+TEST(LibCephFS, SnapdirAttrsOnSnapRename) {
+  struct ceph_mount_info *cmount;
+  ASSERT_EQ(ceph_create(&cmount, NULL), 0);
+  ASSERT_EQ(ceph_conf_read_file(cmount, NULL), 0);
+  ASSERT_EQ(0, ceph_conf_parse_env(cmount, NULL));
+  ASSERT_EQ(ceph_mount(cmount, NULL), 0);
+
+  char dir_name[128];
+  char dir_path[256];
+  char snap_dir_path[512];
+
+  pid_t mypid = getpid();
+  sprintf(dir_name, "dir_%d", mypid);
+  sprintf(dir_path, "/%s", dir_name);
+  sprintf(snap_dir_path, "%s/.snap", dir_path);
+
+  ASSERT_EQ(ceph_mkdir(cmount, dir_path, 0777), 0);
+
+  struct ceph_statx stx_dir;
+  struct ceph_statx stx_snap_dir;
+  struct ceph_statx stx_root_snap_dir;
+  ASSERT_EQ(ceph_statx(cmount, dir_path, &stx_dir, CEPH_STATX_MTIME|CEPH_STATX_CTIME|CEPH_STATX_VERSION, 0), 0);
+  ASSERT_EQ(ceph_statx(cmount, snap_dir_path, &stx_snap_dir, CEPH_STATX_MTIME|CEPH_STATX_CTIME|CEPH_STATX_VERSION, 0), 0);
+  ASSERT_EQ(ceph_statx(cmount, "/.snap", &stx_root_snap_dir, CEPH_STATX_MTIME|CEPH_STATX_CTIME|CEPH_STATX_VERSION, 0), 0);
+  ASSERT_EQ(utime_t(stx_root_snap_dir.stx_mtime), utime_t(stx_snap_dir.stx_mtime));
+  ASSERT_EQ(utime_t(stx_root_snap_dir.stx_ctime), utime_t(stx_snap_dir.stx_ctime));
+  ASSERT_EQ(stx_root_snap_dir.stx_version, stx_snap_dir.stx_version);
+
+  char snap_path[1024];
+  sprintf(snap_path, "%s/snap_a", snap_dir_path);
+  ASSERT_EQ(ceph_mkdir(cmount, snap_path, 0777), 0);
+
+  struct ceph_statx stx_snap_dir_1;
+  ASSERT_EQ(ceph_statx(cmount, snap_dir_path, &stx_snap_dir_1, CEPH_STATX_MTIME|CEPH_STATX_CTIME|CEPH_STATX_VERSION, 0), 0);
+  ASSERT_LT(utime_t(stx_root_snap_dir.stx_mtime), utime_t(stx_snap_dir_1.stx_mtime));
+  ASSERT_LT(utime_t(stx_root_snap_dir.stx_ctime), utime_t(stx_snap_dir_1.stx_ctime));
+  ASSERT_LT(stx_root_snap_dir.stx_version, stx_snap_dir_1.stx_version);
+
+  char snap_path_r[1024];
+  sprintf(snap_path_r, "%s/snap_b", snap_dir_path);
+  ASSERT_EQ(ceph_rename(cmount, snap_path, snap_path_r), 0);
+
+  struct ceph_statx stx_snap_dir_2;
+  ASSERT_EQ(ceph_statx(cmount, snap_dir_path, &stx_snap_dir_2, CEPH_STATX_MTIME|CEPH_STATX_CTIME|CEPH_STATX_VERSION, 0), 0);
+  ASSERT_LT(utime_t(stx_snap_dir_1.stx_mtime), utime_t(stx_snap_dir_2.stx_mtime));
+  ASSERT_LT(utime_t(stx_snap_dir_1.stx_ctime), utime_t(stx_snap_dir_2.stx_ctime));
+  ASSERT_LT(stx_snap_dir_1.stx_version, stx_snap_dir_2.stx_version);
+
+  ASSERT_EQ(0, ceph_rmdir(cmount, snap_path_r));
+  ASSERT_EQ(0, ceph_rmdir(cmount, dir_path));
+  ASSERT_EQ(0, ceph_unmount(cmount));
+  ceph_shutdown(cmount);
+}