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-rw-r--r--src/test/libcephfs/deleg.cc385
1 files changed, 385 insertions, 0 deletions
diff --git a/src/test/libcephfs/deleg.cc b/src/test/libcephfs/deleg.cc
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+++ b/src/test/libcephfs/deleg.cc
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+// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
+// vim: ts=8 sw=2 smarttab
+/*
+ * Tests for Ceph delegation handling
+ *
+ * (c) 2017, Jeff Layton <jlayton@redhat.com>
+ */
+
+#include "gtest/gtest.h"
+#include "include/cephfs/libcephfs.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>
+
+#ifdef __linux__
+#include <limits.h>
+#include <sys/xattr.h>
+#endif
+
+#include <map>
+#include <vector>
+#include <thread>
+#include <atomic>
+
+#include "include/ceph_assert.h"
+
+/* in ms -- 1 minute */
+#define MAX_WAIT (60 * 1000)
+
+static void wait_for_atomic_bool(std::atomic_bool &recalled)
+{
+ int i = 0;
+
+ while (!recalled.load()) {
+ ASSERT_LT(i++, MAX_WAIT);
+ usleep(1000);
+ }
+}
+
+static int set_default_deleg_timeout(struct ceph_mount_info *cmount)
+{
+ uint32_t session_timeout = ceph_get_cap_return_timeout(cmount);
+ return ceph_set_deleg_timeout(cmount, session_timeout - 1);
+}
+
+static void dummy_deleg_cb(Fh *fh, void *priv)
+{
+ std::atomic_bool *recalled = (std::atomic_bool *)priv;
+ recalled->store(true);
+}
+
+static void open_breaker_func(struct ceph_mount_info *cmount, const char *filename, int flags, std::atomic_bool *opened)
+{
+ bool do_shutdown = false;
+
+ if (!cmount) {
+ ASSERT_EQ(ceph_create(&cmount, NULL), 0);
+ ASSERT_EQ(ceph_conf_read_file(cmount, NULL), 0);
+ ASSERT_EQ(ceph_conf_parse_env(cmount, NULL), 0);
+ ASSERT_EQ(ceph_mount(cmount, "/"), 0);
+ ASSERT_EQ(set_default_deleg_timeout(cmount), 0);
+ do_shutdown = true;
+ }
+
+ 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_lookup(cmount, root, filename, &file, &stx, CEPH_STATX_ALL_STATS, 0, perms), 0);
+ int ret, i = 0;
+ for (;;) {
+ ASSERT_EQ(ceph_ll_getattr(cmount, file, &stx, CEPH_STATX_ALL_STATS, 0, perms), 0);
+ ret = ceph_ll_open(cmount, file, flags, &fh, perms);
+ if (ret != -EAGAIN)
+ break;
+ ASSERT_LT(i++, MAX_WAIT);
+ usleep(1000);
+ }
+ ASSERT_EQ(ret, 0);
+ opened->store(true);
+ ASSERT_EQ(ceph_ll_close(cmount, fh), 0);
+
+ if (do_shutdown)
+ ceph_shutdown(cmount);
+}
+
+enum {
+ DelegTestLink,
+ DelegTestRename,
+ DelegTestUnlink
+};
+
+static void namespace_breaker_func(struct ceph_mount_info *cmount, int cmd, const char *oldname, const char *newname)
+{
+ bool do_shutdown = false;
+
+ if (!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);
+ ASSERT_EQ(set_default_deleg_timeout(cmount), 0);
+ do_shutdown = true;
+ }
+
+ Inode *root, *file = nullptr;
+ ASSERT_EQ(ceph_ll_lookup_root(cmount, &root), 0);
+
+ struct ceph_statx stx;
+ UserPerm *perms = ceph_mount_perms(cmount);
+
+ int ret, i = 0;
+ for (;;) {
+ switch (cmd) {
+ case DelegTestRename:
+ ret = ceph_ll_rename(cmount, root, oldname, root, newname, perms);
+ break;
+ case DelegTestLink:
+ if (!file) {
+ ASSERT_EQ(ceph_ll_lookup(cmount, root, oldname, &file, &stx, 0, 0, perms), 0);
+ }
+ ret = ceph_ll_link(cmount, file, root, newname, perms);
+ break;
+ case DelegTestUnlink:
+ ret = ceph_ll_unlink(cmount, root, oldname, perms);
+ break;
+ default:
+ // Bad command
+ ceph_abort();
+ }
+ if (ret != -EAGAIN)
+ break;
+ ASSERT_LT(i++, MAX_WAIT);
+ usleep(1000);
+ }
+ ASSERT_EQ(ret, 0);
+
+ if (do_shutdown)
+ ceph_shutdown(cmount);
+}
+
+static void simple_deleg_test(struct ceph_mount_info *cmount, struct ceph_mount_info *tcmount)
+{
+ Inode *root, *file;
+
+ ASSERT_EQ(ceph_ll_lookup_root(cmount, &root), 0);
+
+ char filename[32];
+
+ Fh *fh;
+ struct ceph_statx stx;
+ UserPerm *perms = ceph_mount_perms(cmount);
+
+ std::atomic_bool recalled(false);
+ std::atomic_bool opened(false);
+
+ // ensure r/w open breaks a r/w delegation
+ sprintf(filename, "deleg.rwrw.%x", getpid());
+ ASSERT_EQ(ceph_ll_create(cmount, root, filename, 0666,
+ O_RDWR|O_CREAT|O_EXCL, &file, &fh, &stx, 0, 0, perms), 0);
+ ASSERT_EQ(ceph_ll_delegation(cmount, fh, CEPH_DELEGATION_WR, dummy_deleg_cb, &recalled), 0);
+ std::thread breaker1(open_breaker_func, tcmount, filename, O_RDWR, &opened);
+
+ wait_for_atomic_bool(recalled);
+ ASSERT_EQ(opened.load(), false);
+ ASSERT_EQ(ceph_ll_delegation(cmount, fh, CEPH_DELEGATION_NONE, dummy_deleg_cb, &recalled), 0);
+ breaker1.join();
+ ASSERT_EQ(ceph_ll_close(cmount, fh), 0);
+ ASSERT_EQ(ceph_ll_unlink(cmount, root, filename, perms), 0);
+
+ // ensure r/o open breaks a r/w delegation
+ recalled.store(false);
+ opened.store(false);
+ sprintf(filename, "deleg.rorw.%x", getpid());
+ ASSERT_EQ(ceph_ll_create(cmount, root, filename, 0666,
+ O_RDWR|O_CREAT|O_EXCL, &file, &fh, &stx, 0, 0, perms), 0);
+ ASSERT_EQ(ceph_ll_delegation(cmount, fh, CEPH_DELEGATION_WR, dummy_deleg_cb, &recalled), 0);
+ std::thread breaker2(open_breaker_func, tcmount, filename, O_RDONLY, &opened);
+ wait_for_atomic_bool(recalled);
+ ASSERT_EQ(opened.load(), false);
+ ASSERT_EQ(ceph_ll_delegation(cmount, fh, CEPH_DELEGATION_NONE, dummy_deleg_cb, &recalled), 0);
+ breaker2.join();
+ ASSERT_EQ(ceph_ll_close(cmount, fh), 0);
+ ASSERT_EQ(ceph_ll_unlink(cmount, root, filename, perms), 0);
+
+ // ensure r/o open does not break a r/o delegation
+ sprintf(filename, "deleg.rwro.%x", getpid());
+ ASSERT_EQ(ceph_ll_create(cmount, root, filename, 0666,
+ O_RDONLY|O_CREAT|O_EXCL, &file, &fh, &stx, 0, 0, perms), 0);
+ recalled.store(false);
+ ASSERT_EQ(ceph_ll_delegation(cmount, fh, CEPH_DELEGATION_RD, dummy_deleg_cb, &recalled), 0);
+ std::thread breaker3(open_breaker_func, tcmount, filename, O_RDONLY, &opened);
+ breaker3.join();
+ ASSERT_EQ(recalled.load(), false);
+
+ // ensure that r/w open breaks r/o delegation
+ opened.store(false);
+ std::thread breaker4(open_breaker_func, tcmount, filename, O_WRONLY, &opened);
+ wait_for_atomic_bool(recalled);
+ usleep(1000);
+ ASSERT_EQ(opened.load(), false);
+ ASSERT_EQ(ceph_ll_delegation(cmount, fh, CEPH_DELEGATION_NONE, dummy_deleg_cb, &recalled), 0);
+ breaker4.join();
+ ASSERT_EQ(ceph_ll_close(cmount, fh), 0);
+ ASSERT_EQ(ceph_ll_unlink(cmount, root, filename, perms), 0);
+
+ // ensure hardlinking breaks a r/w delegation
+ recalled.store(false);
+ char newname[32];
+ sprintf(filename, "deleg.old.%x", getpid());
+ sprintf(newname, "deleg.new.%x", getpid());
+ ASSERT_EQ(ceph_ll_create(cmount, root, filename, 0666,
+ O_RDWR|O_CREAT|O_EXCL, &file, &fh, &stx, 0, 0, perms), 0);
+ ASSERT_EQ(ceph_ll_delegation(cmount, fh, CEPH_DELEGATION_WR, dummy_deleg_cb, &recalled), 0);
+ std::thread breaker5(namespace_breaker_func, tcmount, DelegTestLink, filename, newname);
+ wait_for_atomic_bool(recalled);
+ ASSERT_EQ(ceph_ll_delegation(cmount, fh, CEPH_DELEGATION_NONE, dummy_deleg_cb, &recalled), 0);
+ breaker5.join();
+ ASSERT_EQ(ceph_ll_close(cmount, fh), 0);
+ ASSERT_EQ(ceph_ll_unlink(cmount, root, filename, perms), 0);
+ ASSERT_EQ(ceph_ll_unlink(cmount, root, newname, perms), 0);
+
+ // ensure renaming breaks a r/w delegation
+ recalled.store(false);
+ ASSERT_EQ(ceph_ll_create(cmount, root, filename, 0666,
+ O_RDWR|O_CREAT|O_EXCL, &file, &fh, &stx, 0, 0, perms), 0);
+ ASSERT_EQ(ceph_ll_delegation(cmount, fh, CEPH_DELEGATION_WR, dummy_deleg_cb, &recalled), 0);
+ std::thread breaker6(namespace_breaker_func, tcmount, DelegTestRename, filename, newname);
+ wait_for_atomic_bool(recalled);
+ ASSERT_EQ(ceph_ll_delegation(cmount, fh, CEPH_DELEGATION_NONE, dummy_deleg_cb, &recalled), 0);
+ breaker6.join();
+ ASSERT_EQ(ceph_ll_close(cmount, fh), 0);
+ ASSERT_EQ(ceph_ll_unlink(cmount, root, newname, perms), 0);
+
+ // ensure unlinking breaks a r/w delegation
+ recalled.store(false);
+ ASSERT_EQ(ceph_ll_create(cmount, root, filename, 0666,
+ O_RDWR|O_CREAT|O_EXCL, &file, &fh, &stx, 0, 0, perms), 0);
+ ASSERT_EQ(ceph_ll_delegation(cmount, fh, CEPH_DELEGATION_WR, dummy_deleg_cb, &recalled), 0);
+ std::thread breaker7(namespace_breaker_func, tcmount, DelegTestUnlink, filename, nullptr);
+ wait_for_atomic_bool(recalled);
+ ASSERT_EQ(ceph_ll_delegation(cmount, fh, CEPH_DELEGATION_NONE, dummy_deleg_cb, &recalled), 0);
+ breaker7.join();
+ ASSERT_EQ(ceph_ll_close(cmount, fh), 0);
+}
+
+TEST(LibCephFS, DelegMultiClient) {
+ 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);
+ ASSERT_EQ(set_default_deleg_timeout(cmount), 0);
+
+ simple_deleg_test(cmount, nullptr);
+
+ ceph_shutdown(cmount);
+}
+
+TEST(LibCephFS, DelegSingleClient) {
+ 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);
+ ASSERT_EQ(set_default_deleg_timeout(cmount), 0);
+
+ simple_deleg_test(cmount, cmount);
+
+ ceph_shutdown(cmount);
+}
+
+TEST(LibCephFS, DelegTimeout) {
+ 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);
+ // tweak timeout to run quickly, since we don't plan to return it anyway
+ ASSERT_EQ(ceph_set_deleg_timeout(cmount, 2), 0);
+
+ Inode *root, *file;
+ ASSERT_EQ(ceph_ll_lookup_root(cmount, &root), 0);
+
+ char filename[32];
+ sprintf(filename, "delegtimeo%x", getpid());
+
+ 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_EXCL, &file, &fh, &stx, 0, 0, perms), 0);
+
+ /* Reopen read-only */
+ ASSERT_EQ(ceph_ll_close(cmount, fh), 0);
+ ASSERT_EQ(ceph_ll_open(cmount, file, O_RDONLY, &fh, perms), 0);
+
+ std::atomic_bool recalled(false);
+ ASSERT_EQ(ceph_ll_delegation(cmount, fh, CEPH_DELEGATION_RD, dummy_deleg_cb, &recalled), 0);
+ std::atomic_bool opened(false);
+ std::thread breaker1(open_breaker_func, nullptr, filename, O_RDWR, &opened);
+ breaker1.join();
+ ASSERT_EQ(recalled.load(), true);
+ ASSERT_EQ(ceph_ll_getattr(cmount, root, &stx, 0, 0, perms), -ENOTCONN);
+ ceph_release(cmount);
+}
+
+TEST(LibCephFS, RecalledGetattr) {
+ struct ceph_mount_info *cmount1;
+ ASSERT_EQ(ceph_create(&cmount1, NULL), 0);
+ ASSERT_EQ(ceph_conf_read_file(cmount1, NULL), 0);
+ ASSERT_EQ(0, ceph_conf_parse_env(cmount1, NULL));
+ ASSERT_EQ(ceph_mount(cmount1, "/"), 0);
+ ASSERT_EQ(set_default_deleg_timeout(cmount1), 0);
+
+ Inode *root, *file;
+ ASSERT_EQ(ceph_ll_lookup_root(cmount1, &root), 0);
+
+ char filename[32];
+ sprintf(filename, "recalledgetattr%x", getpid());
+
+ Fh *fh;
+ struct ceph_statx stx;
+ UserPerm *perms = ceph_mount_perms(cmount1);
+
+ ASSERT_EQ(ceph_ll_create(cmount1, root, filename, 0666,
+ O_RDWR|O_CREAT|O_EXCL, &file, &fh, &stx, 0, 0, perms), 0);
+ ASSERT_EQ(ceph_ll_write(cmount1, fh, 0, sizeof(filename), filename),
+ static_cast<int>(sizeof(filename)));
+ ASSERT_EQ(ceph_ll_close(cmount1, fh), 0);
+
+ /* New mount for read delegation */
+ struct ceph_mount_info *cmount2;
+ ASSERT_EQ(ceph_create(&cmount2, NULL), 0);
+ ASSERT_EQ(ceph_conf_read_file(cmount2, NULL), 0);
+ ASSERT_EQ(0, ceph_conf_parse_env(cmount2, NULL));
+ ASSERT_EQ(ceph_mount(cmount2, "/"), 0);
+ ASSERT_EQ(set_default_deleg_timeout(cmount2), 0);
+
+ ASSERT_EQ(ceph_ll_lookup_root(cmount2, &root), 0);
+ perms = ceph_mount_perms(cmount2);
+ ASSERT_EQ(ceph_ll_lookup(cmount2, root, filename, &file, &stx, 0, 0, perms), 0);
+
+ ASSERT_EQ(ceph_ll_open(cmount2, file, O_WRONLY, &fh, perms), 0);
+ ASSERT_EQ(ceph_ll_write(cmount2, fh, 0, sizeof(filename), filename),
+ static_cast<int>(sizeof(filename)));
+ ASSERT_EQ(ceph_ll_close(cmount2, fh), 0);
+
+ ASSERT_EQ(ceph_ll_open(cmount2, file, O_RDONLY, &fh, perms), 0);
+
+ /* Break delegation */
+ std::atomic_bool recalled(false);
+ ASSERT_EQ(ceph_ll_delegation(cmount2, fh, CEPH_DELEGATION_RD, dummy_deleg_cb, &recalled), 0);
+ ASSERT_EQ(ceph_ll_read(cmount2, fh, 0, sizeof(filename), filename),
+ static_cast<int>(sizeof(filename)));
+ ASSERT_EQ(ceph_ll_getattr(cmount2, file, &stx, CEPH_STATX_ALL_STATS, 0, perms), 0);
+ std::atomic_bool opened(false);
+ std::thread breaker1(open_breaker_func, cmount1, filename, O_WRONLY, &opened);
+ int i = 0;
+ do {
+ ASSERT_EQ(ceph_ll_getattr(cmount2, file, &stx, CEPH_STATX_ALL_STATS, 0, perms), 0);
+ ASSERT_LT(i++, MAX_WAIT);
+ usleep(1000);
+ } while (!recalled.load());
+ ASSERT_EQ(opened.load(), false);
+ ASSERT_EQ(ceph_ll_getattr(cmount2, file, &stx, CEPH_STATX_ALL_STATS, 0, perms), 0);
+ ASSERT_EQ(ceph_ll_delegation(cmount2, fh, CEPH_DELEGATION_NONE, dummy_deleg_cb, nullptr), 0);
+ breaker1.join();
+ ASSERT_EQ(ceph_ll_close(cmount2, fh), 0);
+ ceph_unmount(cmount2);
+ ceph_release(cmount2);
+ ceph_unmount(cmount1);
+ ceph_release(cmount1);
+}