tests/sys/fs/fuse/link.cc

   1 /*-
   2  * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
   3  *
   4  * Copyright (c) 2019 The FreeBSD Foundation
   5  *
   6  * This software was developed by BFF Storage Systems, LLC under sponsorship
   7  * from the FreeBSD Foundation.
   8  *
   9  * Redistribution and use in source and binary forms, with or without
  10  * modification, are permitted provided that the following conditions
  11  * are met:
  12  * 1. Redistributions of source code must retain the above copyright
  13  *    notice, this list of conditions and the following disclaimer.
  14  * 2. Redistributions in binary form must reproduce the above copyright
  15  *    notice, this list of conditions and the following disclaimer in the
  16  *    documentation and/or other materials provided with the distribution.
  17  *
  18  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
  19  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  20  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  21  * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
  22  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  23  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  24  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  25  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  26  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  27  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  28  * SUCH DAMAGE.
  29  */
  30
  31 extern "C" {
  32 #include <unistd.h>
  33 }
  34
  35 #include "mockfs.hh"
  36 #include "utils.hh"
  37
  38 using namespace testing;
  39
  40 class Link: public FuseTest {
  41 public:
  42 void expect_lookup(const char *relpath, uint64_t ino)
  43 {
  44         FuseTest::expect_lookup(relpath, ino, S_IFREG | 0644, 1);
  45 }
  46 };
  47
  48 TEST_F(Link, emlink)
  49 {
  50         const char FULLPATH[] = "mountpoint/lnk";
  51         const char RELPATH[] = "lnk";
  52         const char FULLDST[] = "mountpoint/dst";
  53         const char RELDST[] = "dst";
  54         uint64_t dst_ino = 42;
  55
  56         EXPECT_LOOKUP(1, RELPATH).WillOnce(Invoke(ReturnErrno(ENOENT)));
  57         expect_lookup(RELDST, dst_ino);
  58
  59         EXPECT_CALL(*m_mock, process(
  60                 ResultOf([=](auto in) {
  61                         const char *name = (const char*)in->body.bytes
  62                                 + sizeof(struct fuse_link_in);
  63                         return (in->header.opcode == FUSE_LINK &&
  64                                 in->body.link.oldnodeid == dst_ino &&
  65                                 (0 == strcmp(name, RELPATH)));
  66                 }, Eq(true)),
  67                 _)
  68         ).WillOnce(Invoke(ReturnErrno(EMLINK)));
  69
  70         EXPECT_EQ(-1, link(FULLDST, FULLPATH));
  71         EXPECT_EQ(EMLINK, errno);
  72 }
  73
  74 TEST_F(Link, ok)
  75 {
  76         const char FULLPATH[] = "mountpoint/src";
  77         const char RELPATH[] = "src";
  78         const char FULLDST[] = "mountpoint/dst";
  79         const char RELDST[] = "dst";
  80         uint64_t dst_ino = 42;
  81         const uint64_t ino = 42;
  82
  83         EXPECT_LOOKUP(1, RELPATH).WillOnce(Invoke(ReturnErrno(ENOENT)));
  84         expect_lookup(RELDST, dst_ino);
  85
  86         EXPECT_CALL(*m_mock, process(
  87                 ResultOf([=](auto in) {
  88                         const char *name = (const char*)in->body.bytes
  89                                 + sizeof(struct fuse_link_in);
  90                         return (in->header.opcode == FUSE_LINK &&
  91                                 in->body.link.oldnodeid == dst_ino &&
  92                                 (0 == strcmp(name, RELPATH)));
  93                 }, Eq(true)),
  94                 _)
  95         ).WillOnce(Invoke(ReturnImmediate([=](auto in __unused, auto out) {
  96                 SET_OUT_HEADER_LEN(out, entry);
  97                 out->body.entry.attr.mode = S_IFREG | 0644;
  98                 out->body.entry.nodeid = ino;
  99         })));
 100
 101         EXPECT_EQ(0, link(FULLDST, FULLPATH)) << strerror(errno);
 102 }