diff options
Diffstat (limited to 'test/syscalls/linux/open_create.cc')
-rw-r--r-- | test/syscalls/linux/open_create.cc | 155 |
1 files changed, 0 insertions, 155 deletions
diff --git a/test/syscalls/linux/open_create.cc b/test/syscalls/linux/open_create.cc deleted file mode 100644 index 902d0a0dc..000000000 --- a/test/syscalls/linux/open_create.cc +++ /dev/null @@ -1,155 +0,0 @@ -// Copyright 2018 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -#include <errno.h> -#include <fcntl.h> -#include <sys/stat.h> -#include <sys/types.h> -#include <unistd.h> - -#include "gtest/gtest.h" -#include "test/syscalls/linux/temp_umask.h" -#include "test/util/capability_util.h" -#include "test/util/file_descriptor.h" -#include "test/util/fs_util.h" -#include "test/util/temp_path.h" -#include "test/util/test_util.h" - -namespace gvisor { -namespace testing { - -namespace { -TEST(CreateTest, TmpFile) { - int fd; - EXPECT_THAT(fd = open(JoinPath(GetAbsoluteTestTmpdir(), "a").c_str(), - O_RDWR | O_CREAT, 0666), - SyscallSucceeds()); - EXPECT_THAT(close(fd), SyscallSucceeds()); -} - -TEST(CreateTest, ExistingFile) { - int fd; - EXPECT_THAT( - fd = open(JoinPath(GetAbsoluteTestTmpdir(), "ExistingFile").c_str(), - O_RDWR | O_CREAT, 0666), - SyscallSucceeds()); - EXPECT_THAT(close(fd), SyscallSucceeds()); - - EXPECT_THAT( - fd = open(JoinPath(GetAbsoluteTestTmpdir(), "ExistingFile").c_str(), - O_RDWR | O_CREAT, 0666), - SyscallSucceeds()); - EXPECT_THAT(close(fd), SyscallSucceeds()); -} - -TEST(CreateTest, CreateAtFile) { - int dirfd; - EXPECT_THAT(dirfd = open(GetAbsoluteTestTmpdir().c_str(), O_DIRECTORY, 0666), - SyscallSucceeds()); - EXPECT_THAT(openat(dirfd, "CreateAtFile", O_RDWR | O_CREAT, 0666), - SyscallSucceeds()); - EXPECT_THAT(close(dirfd), SyscallSucceeds()); -} - -TEST(CreateTest, HonorsUmask_NoRandomSave) { - const DisableSave ds; // file cannot be re-opened as writable. - TempUmask mask(0222); - int fd; - ASSERT_THAT( - fd = open(JoinPath(GetAbsoluteTestTmpdir(), "UmaskedFile").c_str(), - O_RDWR | O_CREAT, 0666), - SyscallSucceeds()); - struct stat statbuf; - ASSERT_THAT(fstat(fd, &statbuf), SyscallSucceeds()); - EXPECT_EQ(0444, statbuf.st_mode & 0777); - EXPECT_THAT(close(fd), SyscallSucceeds()); -} - -TEST(CreateTest, CreateExclusively) { - std::string filename = NewTempAbsPath(); - - int fd; - ASSERT_THAT(fd = open(filename.c_str(), O_CREAT | O_RDWR, 0644), - SyscallSucceeds()); - EXPECT_THAT(close(fd), SyscallSucceeds()); - - EXPECT_THAT(open(filename.c_str(), O_CREAT | O_EXCL | O_RDWR, 0644), - SyscallFailsWithErrno(EEXIST)); -} - -TEST(CreateTeast, CreatWithOTrunc) { - std::string dirpath = JoinPath(GetAbsoluteTestTmpdir(), "truncd"); - ASSERT_THAT(mkdir(dirpath.c_str(), 0777), SyscallSucceeds()); - ASSERT_THAT(open(dirpath.c_str(), O_CREAT | O_TRUNC, 0666), - SyscallFailsWithErrno(EISDIR)); -} - -TEST(CreateTeast, CreatDirWithOTruncAndReadOnly) { - std::string dirpath = JoinPath(GetAbsoluteTestTmpdir(), "truncd"); - ASSERT_THAT(mkdir(dirpath.c_str(), 0777), SyscallSucceeds()); - ASSERT_THAT(open(dirpath.c_str(), O_CREAT | O_TRUNC | O_RDONLY, 0666), - SyscallFailsWithErrno(EISDIR)); -} - -TEST(CreateTeast, CreatFileWithOTruncAndReadOnly) { - std::string dirpath = JoinPath(GetAbsoluteTestTmpdir(), "truncfile"); - int dirfd; - ASSERT_THAT(dirfd = open(dirpath.c_str(), O_RDWR | O_CREAT, 0666), - SyscallSucceeds()); - ASSERT_THAT(open(dirpath.c_str(), O_CREAT | O_TRUNC | O_RDONLY, 0666), - SyscallSucceeds()); - ASSERT_THAT(close(dirfd), SyscallSucceeds()); -} - -TEST(CreateTest, CreateFailsOnUnpermittedDir) { - // Make sure we don't have CAP_DAC_OVERRIDE, since that allows the user to - // always override directory permissions. - ASSERT_NO_ERRNO(SetCapability(CAP_DAC_OVERRIDE, false)); - ASSERT_THAT(open("/foo", O_CREAT | O_RDWR, 0644), - SyscallFailsWithErrno(EACCES)); -} - -TEST(CreateTest, CreateFailsOnDirWithoutWritePerms) { - // Make sure we don't have CAP_DAC_OVERRIDE, since that allows the user to - // always override directory permissions. - ASSERT_NO_ERRNO(SetCapability(CAP_DAC_OVERRIDE, false)); - auto parent = ASSERT_NO_ERRNO_AND_VALUE( - TempPath::CreateDirWith(GetAbsoluteTestTmpdir(), 0555)); - auto file = JoinPath(parent.path(), "foo"); - ASSERT_THAT(open(file.c_str(), O_CREAT | O_RDWR, 0644), - SyscallFailsWithErrno(EACCES)); -} - -// A file originally created RW, but opened RO can later be opened RW. -// Regression test for b/65385065. -TEST(CreateTest, OpenCreateROThenRW) { - TempPath file(NewTempAbsPath()); - - // Create a RW file, but only open it RO. - FileDescriptor fd1 = ASSERT_NO_ERRNO_AND_VALUE( - Open(file.path(), O_CREAT | O_EXCL | O_RDONLY, 0644)); - - // Now get a RW FD. - FileDescriptor fd2 = ASSERT_NO_ERRNO_AND_VALUE(Open(file.path(), O_RDWR)); - - // fd1 is not writable, but fd2 is. - char c = 'a'; - EXPECT_THAT(WriteFd(fd1.get(), &c, 1), SyscallFailsWithErrno(EBADF)); - EXPECT_THAT(WriteFd(fd2.get(), &c, 1), SyscallSucceedsWithValue(1)); -} - -} // namespace - -} // namespace testing -} // namespace gvisor |