diff options
Diffstat (limited to 'test/syscalls/linux')
41 files changed, 1189 insertions, 135 deletions
diff --git a/test/syscalls/linux/BUILD b/test/syscalls/linux/BUILD index d184712e3..2b4b6f348 100644 --- a/test/syscalls/linux/BUILD +++ b/test/syscalls/linux/BUILD @@ -582,6 +582,7 @@ cc_binary( "//test/util:eventfd_util", "//test/util:file_descriptor", gtest, + "//test/util:fs_util", "//test/util:posix_error", "//test/util:temp_path", "//test/util:test_main", @@ -797,6 +798,7 @@ cc_binary( linkstatic = 1, deps = [ ":socket_test_util", + "//test/util:capability_util", "//test/util:cleanup", "//test/util:eventfd_util", "//test/util:file_descriptor", @@ -807,6 +809,7 @@ cc_binary( "@com_google_absl//absl/strings", "@com_google_absl//absl/time", gtest, + "//test/util:memory_util", "//test/util:multiprocess_util", "//test/util:posix_error", "//test/util:save_util", @@ -978,6 +981,7 @@ cc_binary( "//test/util:epoll_util", "//test/util:file_descriptor", "//test/util:fs_util", + "//test/util:multiprocess_util", "//test/util:posix_error", "//test/util:temp_path", "//test/util:test_main", @@ -2191,11 +2195,11 @@ cc_binary( ) cc_binary( - name = "sigiret_test", + name = "sigreturn_test", testonly = 1, srcs = select_arch( - amd64 = ["sigiret.cc"], - arm64 = [], + amd64 = ["sigreturn_amd64.cc"], + arm64 = ["sigreturn_arm64.cc"], ), linkstatic = 1, deps = [ diff --git a/test/syscalls/linux/chmod.cc b/test/syscalls/linux/chmod.cc index a06b5cfd6..8233df0f8 100644 --- a/test/syscalls/linux/chmod.cc +++ b/test/syscalls/linux/chmod.cc @@ -98,6 +98,42 @@ TEST(ChmodTest, FchmodatBadF) { ASSERT_THAT(fchmodat(-1, "foo", 0444, 0), SyscallFailsWithErrno(EBADF)); } +TEST(ChmodTest, FchmodFileWithOpath) { + SKIP_IF(IsRunningWithVFS1()); + auto file = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFile()); + FileDescriptor fd = ASSERT_NO_ERRNO_AND_VALUE(Open(file.path(), O_PATH)); + + ASSERT_THAT(fchmod(fd.get(), 0444), SyscallFailsWithErrno(EBADF)); +} + +TEST(ChmodTest, FchmodDirWithOpath) { + SKIP_IF(IsRunningWithVFS1()); + const auto dir = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateDir()); + const auto fd = + ASSERT_NO_ERRNO_AND_VALUE(Open(dir.path(), O_DIRECTORY | O_PATH)); + + ASSERT_THAT(fchmod(fd.get(), 0444), SyscallFailsWithErrno(EBADF)); +} + +TEST(ChmodTest, FchmodatWithOpath) { + SKIP_IF(IsRunningWithVFS1()); + // Drop capabilities that allow us to override file permissions. + ASSERT_NO_ERRNO(SetCapability(CAP_DAC_OVERRIDE, false)); + + auto temp_file = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFile()); + + const auto parent_fd = ASSERT_NO_ERRNO_AND_VALUE( + Open(GetAbsoluteTestTmpdir().c_str(), O_PATH | O_DIRECTORY)); + + ASSERT_THAT( + fchmodat(parent_fd.get(), std::string(Basename(temp_file.path())).c_str(), + 0444, 0), + SyscallSucceeds()); + + EXPECT_THAT(open(temp_file.path().c_str(), O_RDWR), + SyscallFailsWithErrno(EACCES)); +} + TEST(ChmodTest, FchmodatNotDir) { ASSERT_THAT(fchmodat(-1, "", 0444, 0), SyscallFailsWithErrno(ENOENT)); } diff --git a/test/syscalls/linux/chown.cc b/test/syscalls/linux/chown.cc index 5530ad18f..ff0d39343 100644 --- a/test/syscalls/linux/chown.cc +++ b/test/syscalls/linux/chown.cc @@ -48,6 +48,36 @@ TEST(ChownTest, FchownatBadF) { ASSERT_THAT(fchownat(-1, "fff", 0, 0, 0), SyscallFailsWithErrno(EBADF)); } +TEST(ChownTest, FchownFileWithOpath) { + SKIP_IF(IsRunningWithVFS1()); + auto file = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFile()); + FileDescriptor fd = ASSERT_NO_ERRNO_AND_VALUE(Open(file.path(), O_PATH)); + + ASSERT_THAT(fchown(fd.get(), geteuid(), getegid()), + SyscallFailsWithErrno(EBADF)); +} + +TEST(ChownTest, FchownDirWithOpath) { + SKIP_IF(IsRunningWithVFS1()); + const auto dir = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateDir()); + const auto fd = + ASSERT_NO_ERRNO_AND_VALUE(Open(dir.path(), O_DIRECTORY | O_PATH)); + + ASSERT_THAT(fchown(fd.get(), geteuid(), getegid()), + SyscallFailsWithErrno(EBADF)); +} + +TEST(ChownTest, FchownatWithOpath) { + SKIP_IF(IsRunningWithVFS1()); + const auto dir = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateDir()); + auto file = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFileIn(dir.path())); + const auto dirfd = + ASSERT_NO_ERRNO_AND_VALUE(Open(dir.path(), O_DIRECTORY | O_PATH)); + ASSERT_THAT( + fchownat(dirfd.get(), file.path().c_str(), geteuid(), getegid(), 0), + SyscallSucceeds()); +} + TEST(ChownTest, FchownatEmptyPath) { const auto dir = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateDir()); const auto fd = @@ -209,6 +239,14 @@ INSTANTIATE_TEST_SUITE_P( owner, group, 0); MaybeSave(); return errorFromReturn("fchownat-dirfd", rc); + }, + [](const std::string& path, uid_t owner, gid_t group) -> PosixError { + ASSIGN_OR_RETURN_ERRNO(auto dirfd, Open(std::string(Dirname(path)), + O_DIRECTORY | O_PATH)); + int rc = fchownat(dirfd.get(), std::string(Basename(path)).c_str(), + owner, group, 0); + MaybeSave(); + return errorFromReturn("fchownat-opathdirfd", rc); })); } // namespace diff --git a/test/syscalls/linux/dup.cc b/test/syscalls/linux/dup.cc index 4f773bc75..ba4e13fb9 100644 --- a/test/syscalls/linux/dup.cc +++ b/test/syscalls/linux/dup.cc @@ -18,6 +18,7 @@ #include "gtest/gtest.h" #include "test/util/eventfd_util.h" #include "test/util/file_descriptor.h" +#include "test/util/fs_util.h" #include "test/util/posix_error.h" #include "test/util/temp_path.h" #include "test/util/test_util.h" @@ -44,14 +45,6 @@ PosixErrorOr<FileDescriptor> Dup3(const FileDescriptor& fd, int target_fd, return FileDescriptor(new_fd); } -void CheckSameFile(const FileDescriptor& fd1, const FileDescriptor& fd2) { - struct stat stat_result1, stat_result2; - ASSERT_THAT(fstat(fd1.get(), &stat_result1), SyscallSucceeds()); - ASSERT_THAT(fstat(fd2.get(), &stat_result2), SyscallSucceeds()); - EXPECT_EQ(stat_result1.st_dev, stat_result2.st_dev); - EXPECT_EQ(stat_result1.st_ino, stat_result2.st_ino); -} - TEST(DupTest, Dup) { auto f = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFile()); FileDescriptor fd = ASSERT_NO_ERRNO_AND_VALUE(Open(f.path(), O_RDONLY)); @@ -59,7 +52,7 @@ TEST(DupTest, Dup) { // Dup the descriptor and make sure it's the same file. FileDescriptor nfd = ASSERT_NO_ERRNO_AND_VALUE(fd.Dup()); ASSERT_NE(fd.get(), nfd.get()); - CheckSameFile(fd, nfd); + ASSERT_NO_ERRNO(CheckSameFile(fd, nfd)); } TEST(DupTest, DupClearsCloExec) { @@ -70,10 +63,24 @@ TEST(DupTest, DupClearsCloExec) { // Duplicate the descriptor. Ensure that it doesn't have FD_CLOEXEC set. FileDescriptor nfd = ASSERT_NO_ERRNO_AND_VALUE(fd.Dup()); ASSERT_NE(fd.get(), nfd.get()); - CheckSameFile(fd, nfd); + ASSERT_NO_ERRNO(CheckSameFile(fd, nfd)); EXPECT_THAT(fcntl(nfd.get(), F_GETFD), SyscallSucceedsWithValue(0)); } +TEST(DupTest, DupWithOpath) { + SKIP_IF(IsRunningWithVFS1()); + auto f = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFile()); + FileDescriptor fd = ASSERT_NO_ERRNO_AND_VALUE(Open(f.path(), O_PATH)); + int flags; + ASSERT_THAT(flags = fcntl(fd.get(), F_GETFL), SyscallSucceeds()); + + // Dup the descriptor and make sure it's the same file. + FileDescriptor nfd = ASSERT_NO_ERRNO_AND_VALUE(fd.Dup()); + ASSERT_NE(fd.get(), nfd.get()); + ASSERT_NO_ERRNO(CheckSameFile(fd, nfd)); + EXPECT_THAT(fcntl(nfd.get(), F_GETFL), SyscallSucceedsWithValue(flags)); +} + TEST(DupTest, Dup2) { auto f = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFile()); FileDescriptor fd = ASSERT_NO_ERRNO_AND_VALUE(Open(f.path(), O_RDONLY)); @@ -82,13 +89,13 @@ TEST(DupTest, Dup2) { FileDescriptor nfd = ASSERT_NO_ERRNO_AND_VALUE(fd.Dup()); ASSERT_NE(fd.get(), nfd.get()); - CheckSameFile(fd, nfd); + ASSERT_NO_ERRNO(CheckSameFile(fd, nfd)); // Dup over the file above. int target_fd = nfd.release(); FileDescriptor nfd2 = ASSERT_NO_ERRNO_AND_VALUE(Dup2(fd, target_fd)); EXPECT_EQ(target_fd, nfd2.get()); - CheckSameFile(fd, nfd2); + ASSERT_NO_ERRNO(CheckSameFile(fd, nfd2)); } TEST(DupTest, Dup2SameFD) { @@ -99,6 +106,28 @@ TEST(DupTest, Dup2SameFD) { ASSERT_THAT(dup2(fd.get(), fd.get()), SyscallSucceedsWithValue(fd.get())); } +TEST(DupTest, Dup2WithOpath) { + SKIP_IF(IsRunningWithVFS1()); + auto f = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFile()); + FileDescriptor fd = ASSERT_NO_ERRNO_AND_VALUE(Open(f.path(), O_PATH)); + int flags; + ASSERT_THAT(flags = fcntl(fd.get(), F_GETFL), SyscallSucceeds()); + + // Regular dup once. + FileDescriptor nfd = ASSERT_NO_ERRNO_AND_VALUE(fd.Dup()); + + ASSERT_NE(fd.get(), nfd.get()); + ASSERT_NO_ERRNO(CheckSameFile(fd, nfd)); + EXPECT_THAT(fcntl(nfd.get(), F_GETFL), SyscallSucceedsWithValue(flags)); + + // Dup over the file above. + int target_fd = nfd.release(); + FileDescriptor nfd2 = ASSERT_NO_ERRNO_AND_VALUE(Dup2(fd, target_fd)); + EXPECT_EQ(target_fd, nfd2.get()); + ASSERT_NO_ERRNO(CheckSameFile(fd, nfd2)); + EXPECT_THAT(fcntl(nfd2.get(), F_GETFL), SyscallSucceedsWithValue(flags)); +} + TEST(DupTest, Dup3) { auto f = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFile()); FileDescriptor fd = ASSERT_NO_ERRNO_AND_VALUE(Open(f.path(), O_RDONLY)); @@ -106,16 +135,16 @@ TEST(DupTest, Dup3) { // Regular dup once. FileDescriptor nfd = ASSERT_NO_ERRNO_AND_VALUE(fd.Dup()); ASSERT_NE(fd.get(), nfd.get()); - CheckSameFile(fd, nfd); + ASSERT_NO_ERRNO(CheckSameFile(fd, nfd)); // Dup over the file above, check that it has no CLOEXEC. nfd = ASSERT_NO_ERRNO_AND_VALUE(Dup3(fd, nfd.release(), 0)); - CheckSameFile(fd, nfd); + ASSERT_NO_ERRNO(CheckSameFile(fd, nfd)); EXPECT_THAT(fcntl(nfd.get(), F_GETFD), SyscallSucceedsWithValue(0)); // Dup over the file again, check that it does not CLOEXEC. nfd = ASSERT_NO_ERRNO_AND_VALUE(Dup3(fd, nfd.release(), O_CLOEXEC)); - CheckSameFile(fd, nfd); + ASSERT_NO_ERRNO(CheckSameFile(fd, nfd)); EXPECT_THAT(fcntl(nfd.get(), F_GETFD), SyscallSucceedsWithValue(FD_CLOEXEC)); } @@ -127,6 +156,32 @@ TEST(DupTest, Dup3FailsSameFD) { ASSERT_THAT(dup3(fd.get(), fd.get(), 0), SyscallFailsWithErrno(EINVAL)); } +TEST(DupTest, Dup3WithOpath) { + SKIP_IF(IsRunningWithVFS1()); + auto f = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFile()); + FileDescriptor fd = ASSERT_NO_ERRNO_AND_VALUE(Open(f.path(), O_PATH)); + EXPECT_THAT(fcntl(fd.get(), F_GETFD), SyscallSucceedsWithValue(0)); + int flags; + ASSERT_THAT(flags = fcntl(fd.get(), F_GETFL), SyscallSucceeds()); + + // Regular dup once. + FileDescriptor nfd = ASSERT_NO_ERRNO_AND_VALUE(fd.Dup()); + ASSERT_NE(fd.get(), nfd.get()); + ASSERT_NO_ERRNO(CheckSameFile(fd, nfd)); + + // Dup over the file above, check that it has no CLOEXEC. + nfd = ASSERT_NO_ERRNO_AND_VALUE(Dup3(fd, nfd.release(), 0)); + ASSERT_NO_ERRNO(CheckSameFile(fd, nfd)); + EXPECT_THAT(fcntl(nfd.get(), F_GETFD), SyscallSucceedsWithValue(0)); + EXPECT_THAT(fcntl(nfd.get(), F_GETFL), SyscallSucceedsWithValue(flags)); + + // Dup over the file again, check that it does not CLOEXEC. + nfd = ASSERT_NO_ERRNO_AND_VALUE(Dup3(fd, nfd.release(), O_CLOEXEC)); + ASSERT_NO_ERRNO(CheckSameFile(fd, nfd)); + EXPECT_THAT(fcntl(nfd.get(), F_GETFD), SyscallSucceedsWithValue(FD_CLOEXEC)); + EXPECT_THAT(fcntl(nfd.get(), F_GETFL), SyscallSucceedsWithValue(flags)); +} + } // namespace } // namespace testing diff --git a/test/syscalls/linux/fadvise64.cc b/test/syscalls/linux/fadvise64.cc index 2af7aa6d9..ac24c4066 100644 --- a/test/syscalls/linux/fadvise64.cc +++ b/test/syscalls/linux/fadvise64.cc @@ -45,6 +45,17 @@ TEST(FAdvise64Test, Basic) { SyscallSucceeds()); } +TEST(FAdvise64Test, FAdvise64WithOpath) { + SKIP_IF(IsRunningWithVFS1()); + auto file = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFile()); + const auto fd = ASSERT_NO_ERRNO_AND_VALUE(Open(file.path(), O_PATH)); + + ASSERT_THAT(syscall(__NR_fadvise64, fd.get(), 0, 10, POSIX_FADV_NORMAL), + SyscallFailsWithErrno(EBADF)); + ASSERT_THAT(syscall(__NR_fadvise64, fd.get(), 0, 10, POSIX_FADV_NORMAL), + SyscallFailsWithErrno(EBADF)); +} + TEST(FAdvise64Test, InvalidArgs) { auto file = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFile()); const auto fd = ASSERT_NO_ERRNO_AND_VALUE(Open(file.path(), O_RDONLY)); diff --git a/test/syscalls/linux/fallocate.cc b/test/syscalls/linux/fallocate.cc index edd23e063..5c839447e 100644 --- a/test/syscalls/linux/fallocate.cc +++ b/test/syscalls/linux/fallocate.cc @@ -108,6 +108,13 @@ TEST_F(AllocateTest, FallocateReadonly) { EXPECT_THAT(fallocate(fd.get(), 0, 0, 10), SyscallFailsWithErrno(EBADF)); } +TEST_F(AllocateTest, FallocateWithOpath) { + SKIP_IF(IsRunningWithVFS1()); + auto file = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFile()); + FileDescriptor fd = ASSERT_NO_ERRNO_AND_VALUE(Open(file.path(), O_PATH)); + EXPECT_THAT(fallocate(fd.get(), 0, 0, 10), SyscallFailsWithErrno(EBADF)); +} + TEST_F(AllocateTest, FallocatePipe) { int pipes[2]; EXPECT_THAT(pipe(pipes), SyscallSucceeds()); diff --git a/test/syscalls/linux/fchdir.cc b/test/syscalls/linux/fchdir.cc index 08bcae1e8..c6675802d 100644 --- a/test/syscalls/linux/fchdir.cc +++ b/test/syscalls/linux/fchdir.cc @@ -71,6 +71,18 @@ TEST(FchdirTest, NotDir) { EXPECT_THAT(close(fd), SyscallSucceeds()); } +TEST(FchdirTest, FchdirWithOpath) { + SKIP_IF(IsRunningWithVFS1()); + auto temp_dir = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateDir()); + FileDescriptor fd = ASSERT_NO_ERRNO_AND_VALUE(Open(temp_dir.path(), O_PATH)); + ASSERT_THAT(open(temp_dir.path().c_str(), O_DIRECTORY | O_PATH), + SyscallSucceeds()); + + EXPECT_THAT(fchdir(fd.get()), SyscallSucceeds()); + // Change CWD to a permanent location as temp dirs will be cleaned up. + EXPECT_THAT(chdir("/"), SyscallSucceeds()); +} + } // namespace } // namespace testing diff --git a/test/syscalls/linux/fcntl.cc b/test/syscalls/linux/fcntl.cc index 4b581045b..4fa6751ff 100644 --- a/test/syscalls/linux/fcntl.cc +++ b/test/syscalls/linux/fcntl.cc @@ -15,6 +15,7 @@ #include <fcntl.h> #include <signal.h> #include <sys/epoll.h> +#include <sys/mman.h> #include <sys/types.h> #include <syscall.h> #include <unistd.h> @@ -35,10 +36,12 @@ #include "absl/time/clock.h" #include "absl/time/time.h" #include "test/syscalls/linux/socket_test_util.h" +#include "test/util/capability_util.h" #include "test/util/cleanup.h" #include "test/util/eventfd_util.h" #include "test/util/file_descriptor.h" #include "test/util/fs_util.h" +#include "test/util/memory_util.h" #include "test/util/multiprocess_util.h" #include "test/util/posix_error.h" #include "test/util/save_util.h" @@ -204,6 +207,41 @@ PosixErrorOr<Cleanup> SubprocessLock(std::string const& path, bool for_write, return std::move(cleanup); } +TEST(FcntlTest, FcntlDupWithOpath) { + SKIP_IF(IsRunningWithVFS1()); + auto f = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFile()); + FileDescriptor fd = ASSERT_NO_ERRNO_AND_VALUE(Open(f.path(), O_PATH)); + + int new_fd; + // Dup the descriptor and make sure it's the same file. + EXPECT_THAT(new_fd = fcntl(fd.get(), F_DUPFD, 0), SyscallSucceeds()); + + FileDescriptor nfd = FileDescriptor(new_fd); + ASSERT_NE(fd.get(), nfd.get()); + ASSERT_NO_ERRNO(CheckSameFile(fd, nfd)); + EXPECT_THAT(fcntl(nfd.get(), F_GETFL), SyscallSucceedsWithValue(O_PATH)); +} + +TEST(FcntlTest, SetFileStatusFlagWithOpath) { + SKIP_IF(IsRunningWithVFS1()); + TempPath path = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFile()); + FileDescriptor fd = ASSERT_NO_ERRNO_AND_VALUE(Open(path.path(), O_PATH)); + + EXPECT_THAT(fcntl(fd.get(), F_SETFL, 0), SyscallFailsWithErrno(EBADF)); +} + +TEST(FcntlTest, BadFcntlsWithOpath) { + SKIP_IF(IsRunningWithVFS1()); + TempPath path = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFile()); + FileDescriptor fd = ASSERT_NO_ERRNO_AND_VALUE(Open(path.path(), O_PATH)); + + EXPECT_THAT(fcntl(fd.get(), F_SETOWN, 0), SyscallFailsWithErrno(EBADF)); + EXPECT_THAT(fcntl(fd.get(), F_GETOWN, 0), SyscallFailsWithErrno(EBADF)); + + EXPECT_THAT(fcntl(fd.get(), F_SETOWN_EX, 0), SyscallFailsWithErrno(EBADF)); + EXPECT_THAT(fcntl(fd.get(), F_GETOWN_EX, 0), SyscallFailsWithErrno(EBADF)); +} + TEST(FcntlTest, SetCloExecBadFD) { // Open an eventfd file descriptor with FD_CLOEXEC descriptor flag not set. FileDescriptor f = ASSERT_NO_ERRNO_AND_VALUE(NewEventFD(0, 0)); @@ -223,6 +261,32 @@ TEST(FcntlTest, SetCloExec) { ASSERT_THAT(fcntl(fd.get(), F_GETFD), SyscallSucceedsWithValue(FD_CLOEXEC)); } +TEST(FcntlTest, SetCloExecWithOpath) { + SKIP_IF(IsRunningWithVFS1()); + // Open a file descriptor with FD_CLOEXEC descriptor flag not set. + TempPath path = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFile()); + FileDescriptor fd = ASSERT_NO_ERRNO_AND_VALUE(Open(path.path(), O_PATH)); + ASSERT_THAT(fcntl(fd.get(), F_GETFD), SyscallSucceedsWithValue(0)); + + // Set the FD_CLOEXEC flag. + ASSERT_THAT(fcntl(fd.get(), F_SETFD, FD_CLOEXEC), SyscallSucceeds()); + ASSERT_THAT(fcntl(fd.get(), F_GETFD), SyscallSucceedsWithValue(FD_CLOEXEC)); +} + +TEST(FcntlTest, DupFDCloExecWithOpath) { + SKIP_IF(IsRunningWithVFS1()); + // Open a file descriptor with FD_CLOEXEC descriptor flag not set. + TempPath path = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFile()); + FileDescriptor fd = ASSERT_NO_ERRNO_AND_VALUE(Open(path.path(), O_PATH)); + int nfd; + ASSERT_THAT(nfd = fcntl(fd.get(), F_DUPFD_CLOEXEC, 0), SyscallSucceeds()); + FileDescriptor dup_fd(nfd); + + // Check for the FD_CLOEXEC flag. + ASSERT_THAT(fcntl(dup_fd.get(), F_GETFD), + SyscallSucceedsWithValue(FD_CLOEXEC)); +} + TEST(FcntlTest, ClearCloExec) { // Open an eventfd file descriptor with FD_CLOEXEC descriptor flag set. FileDescriptor fd = ASSERT_NO_ERRNO_AND_VALUE(NewEventFD(0, EFD_CLOEXEC)); @@ -264,6 +328,22 @@ TEST(FcntlTest, GetAllFlags) { EXPECT_EQ(rflags, expected); } +// When O_PATH is specified in flags, flag bits other than O_CLOEXEC, +// O_DIRECTORY, and O_NOFOLLOW are ignored. +TEST(FcntlTest, GetOpathFlag) { + SKIP_IF(IsRunningWithVFS1()); + TempPath path = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateDir()); + int flags = O_RDWR | O_DIRECT | O_SYNC | O_NONBLOCK | O_APPEND | O_PATH | + O_NOFOLLOW | O_DIRECTORY; + FileDescriptor fd = ASSERT_NO_ERRNO_AND_VALUE(Open(path.path(), flags)); + + int expected = O_PATH | O_NOFOLLOW | O_DIRECTORY; + + int rflags; + EXPECT_THAT(rflags = fcntl(fd.get(), F_GETFL), SyscallSucceeds()); + EXPECT_EQ(rflags, expected); +} + TEST(FcntlTest, SetFlags) { TempPath path = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFile()); FileDescriptor fd = ASSERT_NO_ERRNO_AND_VALUE(Open(path.path(), 0)); @@ -392,6 +472,22 @@ TEST_F(FcntlLockTest, SetLockBadOpenFlagsRead) { EXPECT_THAT(fcntl(fd.get(), F_SETLK, &fl1), SyscallFailsWithErrno(EBADF)); } +TEST_F(FcntlLockTest, SetLockWithOpath) { + SKIP_IF(IsRunningWithVFS1()); + auto file = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFile()); + FileDescriptor fd = ASSERT_NO_ERRNO_AND_VALUE(Open(file.path(), O_PATH)); + + struct flock fl0; + fl0.l_type = F_WRLCK; + fl0.l_whence = SEEK_SET; + fl0.l_start = 0; + fl0.l_len = 0; // Lock all file + + // Expect that setting a write lock using a Opath file descriptor + // won't work. + EXPECT_THAT(fcntl(fd.get(), F_SETLK, &fl0), SyscallFailsWithErrno(EBADF)); +} + TEST_F(FcntlLockTest, SetLockUnlockOnNothing) { auto file = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFile()); FileDescriptor fd = @@ -1642,6 +1738,202 @@ TEST(FcntlTest, SetFlSetOwnSetSigDoNotRace) { } } +TEST_F(FcntlLockTest, GetLockOnNothing) { + SKIP_IF(IsRunningWithVFS1()); + auto file = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFile()); + FileDescriptor fd = + ASSERT_NO_ERRNO_AND_VALUE(Open(file.path(), O_RDWR, 0666)); + + struct flock fl; + fl.l_type = F_RDLCK; + fl.l_whence = SEEK_SET; + fl.l_start = 0; + fl.l_len = 40; + ASSERT_THAT(fcntl(fd.get(), F_GETLK, &fl), SyscallSucceeds()); + ASSERT_TRUE(fl.l_type == F_UNLCK); +} + +TEST_F(FcntlLockTest, GetLockOnLockSameProcess) { + SKIP_IF(IsRunningWithVFS1()); + auto file = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFile()); + FileDescriptor fd = + ASSERT_NO_ERRNO_AND_VALUE(Open(file.path(), O_RDWR, 0666)); + + struct flock fl; + fl.l_type = F_RDLCK; + fl.l_whence = SEEK_SET; + fl.l_start = 0; + fl.l_len = 40; + ASSERT_THAT(fcntl(fd.get(), F_SETLK, &fl), SyscallSucceeds()); + ASSERT_THAT(fcntl(fd.get(), F_GETLK, &fl), SyscallSucceeds()); + ASSERT_TRUE(fl.l_type == F_UNLCK); + + fl.l_type = F_WRLCK; + ASSERT_THAT(fcntl(fd.get(), F_SETLK, &fl), SyscallSucceeds()); + ASSERT_THAT(fcntl(fd.get(), F_GETLK, &fl), SyscallSucceeds()); + ASSERT_TRUE(fl.l_type == F_UNLCK); +} + +TEST_F(FcntlLockTest, GetReadLockOnReadLock) { + SKIP_IF(IsRunningWithVFS1()); + auto file = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFile()); + FileDescriptor fd = + ASSERT_NO_ERRNO_AND_VALUE(Open(file.path(), O_RDWR, 0666)); + + struct flock fl; + fl.l_type = F_RDLCK; + fl.l_whence = SEEK_SET; + fl.l_start = 0; + fl.l_len = 40; + ASSERT_THAT(fcntl(fd.get(), F_SETLK, &fl), SyscallSucceeds()); + + pid_t child_pid = fork(); + if (child_pid == 0) { + TEST_CHECK(fcntl(fd.get(), F_GETLK, &fl) >= 0); + TEST_CHECK(fl.l_type == F_UNLCK); + _exit(0); + } + int status; + ASSERT_THAT(waitpid(child_pid, &status, 0), + SyscallSucceedsWithValue(child_pid)); + ASSERT_TRUE(WIFEXITED(status) && WEXITSTATUS(status) == 0); +} + +TEST_F(FcntlLockTest, GetReadLockOnWriteLock) { + SKIP_IF(IsRunningWithVFS1()); + auto file = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFile()); + FileDescriptor fd = + ASSERT_NO_ERRNO_AND_VALUE(Open(file.path(), O_RDWR, 0666)); + + struct flock fl; + fl.l_type = F_WRLCK; + fl.l_whence = SEEK_SET; + fl.l_start = 0; + fl.l_len = 40; + ASSERT_THAT(fcntl(fd.get(), F_SETLK, &fl), SyscallSucceeds()); + + fl.l_type = F_RDLCK; + pid_t child_pid = fork(); + if (child_pid == 0) { + TEST_CHECK(fcntl(fd.get(), F_GETLK, &fl) >= 0); + TEST_CHECK(fl.l_type == F_WRLCK); + TEST_CHECK(fl.l_pid == getppid()); + _exit(0); + } + + int status; + ASSERT_THAT(waitpid(child_pid, &status, 0), + SyscallSucceedsWithValue(child_pid)); + ASSERT_TRUE(WIFEXITED(status) && WEXITSTATUS(status) == 0); +} + +TEST_F(FcntlLockTest, GetWriteLockOnReadLock) { + SKIP_IF(IsRunningWithVFS1()); + auto file = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFile()); + FileDescriptor fd = + ASSERT_NO_ERRNO_AND_VALUE(Open(file.path(), O_RDWR, 0666)); + + struct flock fl; + fl.l_type = F_RDLCK; + fl.l_whence = SEEK_SET; + fl.l_start = 0; + fl.l_len = 40; + ASSERT_THAT(fcntl(fd.get(), F_SETLK, &fl), SyscallSucceeds()); + + fl.l_type = F_WRLCK; + pid_t child_pid = fork(); + if (child_pid == 0) { + TEST_CHECK(fcntl(fd.get(), F_GETLK, &fl) >= 0); + TEST_CHECK(fl.l_type == F_RDLCK); + TEST_CHECK(fl.l_pid == getppid()); + _exit(0); + } + + int status; + ASSERT_THAT(waitpid(child_pid, &status, 0), + SyscallSucceedsWithValue(child_pid)); + ASSERT_TRUE(WIFEXITED(status) && WEXITSTATUS(status) == 0); +} + +TEST_F(FcntlLockTest, GetWriteLockOnWriteLock) { + SKIP_IF(IsRunningWithVFS1()); + auto file = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFile()); + FileDescriptor fd = + ASSERT_NO_ERRNO_AND_VALUE(Open(file.path(), O_RDWR, 0666)); + + struct flock fl; + fl.l_type = F_WRLCK; + fl.l_whence = SEEK_SET; + fl.l_start = 0; + fl.l_len = 40; + ASSERT_THAT(fcntl(fd.get(), F_SETLK, &fl), SyscallSucceeds()); + + pid_t child_pid = fork(); + if (child_pid == 0) { + TEST_CHECK(fcntl(fd.get(), F_GETLK, &fl) >= 0); + TEST_CHECK(fl.l_type == F_WRLCK); + TEST_CHECK(fl.l_pid == getppid()); + _exit(0); + } + + int status; + ASSERT_THAT(waitpid(child_pid, &status, 0), + SyscallSucceedsWithValue(child_pid)); + ASSERT_TRUE(WIFEXITED(status) && WEXITSTATUS(status) == 0); +} + +// Tests that the pid returned from F_GETLK is relative to the caller's PID +// namespace. +TEST_F(FcntlLockTest, GetLockRespectsPIDNamespace) { + SKIP_IF(IsRunningWithVFS1()); + SKIP_IF(!ASSERT_NO_ERRNO_AND_VALUE(HaveCapability(CAP_SYS_ADMIN))); + auto file = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFile()); + std::string filename = file.path(); + const FileDescriptor fd = + ASSERT_NO_ERRNO_AND_VALUE(Open(filename, O_RDWR, 0666)); + + // Lock in the parent process. + struct flock fl; + fl.l_type = F_WRLCK; + fl.l_whence = SEEK_SET; + fl.l_start = 0; + fl.l_len = 40; + ASSERT_THAT(fcntl(fd.get(), F_SETLK, &fl), SyscallSucceeds()); + + auto child_getlk = [](void* filename) { + int fd = open((char*)filename, O_RDWR, 0666); + TEST_CHECK(fd >= 0); + + struct flock fl; + fl.l_type = F_WRLCK; + fl.l_whence = SEEK_SET; + fl.l_start = 0; + fl.l_len = 40; + TEST_CHECK(fcntl(fd, F_GETLK, &fl) >= 0); + TEST_CHECK(fl.l_type == F_WRLCK); + // Parent PID should be 0 in the child PID namespace. + TEST_CHECK(fl.l_pid == 0); + close(fd); + return 0; + }; + + // Set up child process in a new PID namespace. + constexpr int kStackSize = 4096; + Mapping stack = ASSERT_NO_ERRNO_AND_VALUE( + Mmap(nullptr, kStackSize, PROT_READ | PROT_WRITE, + MAP_PRIVATE | MAP_ANONYMOUS | MAP_STACK, -1, 0)); + pid_t child_pid; + ASSERT_THAT( + child_pid = clone(child_getlk, (char*)stack.ptr() + stack.len(), + CLONE_NEWPID | SIGCHLD, (void*)filename.c_str()), + SyscallSucceeds()); + + int status; + ASSERT_THAT(waitpid(child_pid, &status, 0), + SyscallSucceedsWithValue(child_pid)); + ASSERT_TRUE(WIFEXITED(status) && WEXITSTATUS(status) == 0); +} + } // namespace } // namespace testing diff --git a/test/syscalls/linux/getdents.cc b/test/syscalls/linux/getdents.cc index 93c692dd6..2f2b14037 100644 --- a/test/syscalls/linux/getdents.cc +++ b/test/syscalls/linux/getdents.cc @@ -429,6 +429,32 @@ TYPED_TEST(GetdentsTest, NotDir) { SyscallFailsWithErrno(ENOTDIR)); } +// Test that getdents returns EBADF when called on an opath file. +TYPED_TEST(GetdentsTest, OpathFile) { + SKIP_IF(IsRunningWithVFS1()); + + auto file = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFile()); + auto fd = ASSERT_NO_ERRNO_AND_VALUE(Open(file.path(), O_PATH)); + + typename TestFixture::DirentBufferType dirents(256); + EXPECT_THAT(RetryEINTR(syscall)(this->SyscallNum(), fd.get(), dirents.Data(), + dirents.Size()), + SyscallFailsWithErrno(EBADF)); +} + +// Test that getdents returns EBADF when called on an opath directory. +TYPED_TEST(GetdentsTest, OpathDirectory) { + SKIP_IF(IsRunningWithVFS1()); + + auto dir = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateDir()); + auto fd = ASSERT_NO_ERRNO_AND_VALUE(Open(dir.path(), O_PATH | O_DIRECTORY)); + + typename TestFixture::DirentBufferType dirents(256); + ASSERT_THAT(RetryEINTR(syscall)(this->SyscallNum(), fd.get(), dirents.Data(), + dirents.Size()), + SyscallFailsWithErrno(EBADF)); +} + // Test that SEEK_SET to 0 causes getdents to re-read the entries. TYPED_TEST(GetdentsTest, SeekResetsCursor) { // . and .. should be in an otherwise empty directory. diff --git a/test/syscalls/linux/inotify.cc b/test/syscalls/linux/inotify.cc index 8137f0e29..a88c89e20 100644 --- a/test/syscalls/linux/inotify.cc +++ b/test/syscalls/linux/inotify.cc @@ -36,6 +36,7 @@ #include "test/util/epoll_util.h" #include "test/util/file_descriptor.h" #include "test/util/fs_util.h" +#include "test/util/multiprocess_util.h" #include "test/util/posix_error.h" #include "test/util/temp_path.h" #include "test/util/test_util.h" @@ -315,8 +316,7 @@ PosixErrorOr<std::vector<Event>> DrainEvents(int fd) { } PosixErrorOr<FileDescriptor> InotifyInit1(int flags) { - int fd; - EXPECT_THAT(fd = inotify_init1(flags), SyscallSucceeds()); + int fd = inotify_init1(flags); if (fd < 0) { return PosixError(errno, "inotify_init1() failed"); } @@ -325,9 +325,7 @@ PosixErrorOr<FileDescriptor> InotifyInit1(int flags) { PosixErrorOr<int> InotifyAddWatch(int fd, const std::string& path, uint32_t mask) { - int wd; - EXPECT_THAT(wd = inotify_add_watch(fd, path.c_str(), mask), - SyscallSucceeds()); + int wd = inotify_add_watch(fd, path.c_str(), mask); if (wd < 0) { return PosixError(errno, "inotify_add_watch() failed"); } @@ -784,6 +782,38 @@ TEST(Inotify, MoveWatchedTargetGeneratesEvents) { EXPECT_EQ(events[0].cookie, events[1].cookie); } +// Tests that close events are only emitted when a file description drops its +// last reference. +TEST(Inotify, DupFD) { + SKIP_IF(IsRunningWithVFS1()); + + const TempPath file = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFile()); + const FileDescriptor inotify_fd = + ASSERT_NO_ERRNO_AND_VALUE(InotifyInit1(IN_NONBLOCK)); + + const int wd = ASSERT_NO_ERRNO_AND_VALUE( + InotifyAddWatch(inotify_fd.get(), file.path(), IN_ALL_EVENTS)); + + FileDescriptor fd = ASSERT_NO_ERRNO_AND_VALUE(Open(file.path(), O_RDONLY)); + FileDescriptor fd2 = ASSERT_NO_ERRNO_AND_VALUE(fd.Dup()); + + std::vector<Event> events = + ASSERT_NO_ERRNO_AND_VALUE(DrainEvents(inotify_fd.get())); + EXPECT_THAT(events, Are({ + Event(IN_OPEN, wd), + })); + + fd.reset(); + events = ASSERT_NO_ERRNO_AND_VALUE(DrainEvents(inotify_fd.get())); + EXPECT_THAT(events, Are({})); + + fd2.reset(); + events = ASSERT_NO_ERRNO_AND_VALUE(DrainEvents(inotify_fd.get())); + EXPECT_THAT(events, Are({ + Event(IN_CLOSE_NOWRITE, wd), + })); +} + TEST(Inotify, CoalesceEvents) { const TempPath root = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateDir()); const FileDescriptor fd = @@ -1779,11 +1809,9 @@ TEST(Inotify, Sendfile) { EXPECT_THAT(out_events, Are({Event(IN_MODIFY, out_wd)})); } -// On Linux, inotify behavior is not very consistent with splice(2). We try our -// best to emulate Linux for very basic calls to splice. TEST(Inotify, SpliceOnWatchTarget) { - int pipes[2]; - ASSERT_THAT(pipe2(pipes, O_NONBLOCK), SyscallSucceeds()); + int pipefds[2]; + ASSERT_THAT(pipe2(pipefds, O_NONBLOCK), SyscallSucceeds()); const TempPath dir = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateDir()); const FileDescriptor inotify_fd = @@ -1798,15 +1826,20 @@ TEST(Inotify, SpliceOnWatchTarget) { const int file_wd = ASSERT_NO_ERRNO_AND_VALUE( InotifyAddWatch(inotify_fd.get(), file.path(), IN_ALL_EVENTS)); - EXPECT_THAT(splice(fd.get(), nullptr, pipes[1], nullptr, 1, /*flags=*/0), + EXPECT_THAT(splice(fd.get(), nullptr, pipefds[1], nullptr, 1, /*flags=*/0), SyscallSucceedsWithValue(1)); - // Surprisingly, events are not generated in Linux if we read from a file. + // Surprisingly, events may not be generated in Linux if we read from a file. + // fs/splice.c:generic_file_splice_read, which is used most often, does not + // generate events, whereas fs/splice.c:default_file_splice_read does. std::vector<Event> events = ASSERT_NO_ERRNO_AND_VALUE(DrainEvents(inotify_fd.get())); - ASSERT_THAT(events, Are({})); + if (IsRunningOnGvisor() && !IsRunningWithVFS1()) { + ASSERT_THAT(events, Are({Event(IN_ACCESS, dir_wd, Basename(file.path())), + Event(IN_ACCESS, file_wd)})); + } - EXPECT_THAT(splice(pipes[0], nullptr, fd.get(), nullptr, 1, /*flags=*/0), + EXPECT_THAT(splice(pipefds[0], nullptr, fd.get(), nullptr, 1, /*flags=*/0), SyscallSucceedsWithValue(1)); events = ASSERT_NO_ERRNO_AND_VALUE(DrainEvents(inotify_fd.get())); @@ -1817,8 +1850,8 @@ TEST(Inotify, SpliceOnWatchTarget) { } TEST(Inotify, SpliceOnInotifyFD) { - int pipes[2]; - ASSERT_THAT(pipe2(pipes, O_NONBLOCK), SyscallSucceeds()); + int pipefds[2]; + ASSERT_THAT(pipe2(pipefds, O_NONBLOCK), SyscallSucceeds()); const TempPath root = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateDir()); const FileDescriptor fd = @@ -1834,11 +1867,11 @@ TEST(Inotify, SpliceOnInotifyFD) { char buf; EXPECT_THAT(read(file1_fd.get(), &buf, 1), SyscallSucceeds()); - EXPECT_THAT(splice(fd.get(), nullptr, pipes[1], nullptr, + EXPECT_THAT(splice(fd.get(), nullptr, pipefds[1], nullptr, sizeof(struct inotify_event) + 1, SPLICE_F_NONBLOCK), SyscallSucceedsWithValue(sizeof(struct inotify_event))); - const FileDescriptor read_fd(pipes[0]); + const FileDescriptor read_fd(pipefds[0]); const std::vector<Event> events = ASSERT_NO_ERRNO_AND_VALUE(DrainEvents(read_fd.get())); ASSERT_THAT(events, Are({Event(IN_ACCESS, watcher)})); @@ -1936,24 +1969,29 @@ TEST(Inotify, Xattr) { } TEST(Inotify, Exec) { - const TempPath dir = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateDir()); - const TempPath bin = ASSERT_NO_ERRNO_AND_VALUE( - TempPath::CreateSymlinkTo(dir.path(), "/bin/true")); - + SKIP_IF(IsRunningWithVFS1()); const FileDescriptor fd = ASSERT_NO_ERRNO_AND_VALUE(InotifyInit1(IN_NONBLOCK)); const int wd = ASSERT_NO_ERRNO_AND_VALUE( - InotifyAddWatch(fd.get(), bin.path(), IN_ALL_EVENTS)); + InotifyAddWatch(fd.get(), "/bin/true", IN_ALL_EVENTS)); // Perform exec. - ScopedThread t([&bin]() { - ASSERT_THAT(execl(bin.path().c_str(), bin.path().c_str(), (char*)nullptr), - SyscallSucceeds()); - }); - t.Join(); + pid_t child = -1; + int execve_errno = -1; + auto kill = ASSERT_NO_ERRNO_AND_VALUE( + ForkAndExec("/bin/true", {}, {}, nullptr, &child, &execve_errno)); + ASSERT_EQ(0, execve_errno); + + int status; + ASSERT_THAT(RetryEINTR(waitpid)(child, &status, 0), SyscallSucceeds()); + EXPECT_EQ(0, status); + + // Process cleanup no longer needed. + kill.Release(); std::vector<Event> events = ASSERT_NO_ERRNO_AND_VALUE(DrainEvents(fd.get())); - EXPECT_THAT(events, Are({Event(IN_OPEN, wd), Event(IN_ACCESS, wd)})); + EXPECT_THAT(events, Are({Event(IN_OPEN, wd), Event(IN_ACCESS, wd), + Event(IN_CLOSE_NOWRITE, wd)})); } // Watches without IN_EXCL_UNLINK, should continue to emit events for file diff --git a/test/syscalls/linux/ioctl.cc b/test/syscalls/linux/ioctl.cc index b0a07a064..9b16d1558 100644 --- a/test/syscalls/linux/ioctl.cc +++ b/test/syscalls/linux/ioctl.cc @@ -76,6 +76,19 @@ TEST_F(IoctlTest, InvalidControlNumber) { EXPECT_THAT(ioctl(STDOUT_FILENO, 0), SyscallFailsWithErrno(ENOTTY)); } +TEST_F(IoctlTest, IoctlWithOpath) { + SKIP_IF(IsRunningWithVFS1()); + const FileDescriptor fd = + ASSERT_NO_ERRNO_AND_VALUE(Open("/dev/null", O_PATH)); + + int set = 1; + EXPECT_THAT(ioctl(fd.get(), FIONBIO, &set), SyscallFailsWithErrno(EBADF)); + + EXPECT_THAT(ioctl(fd.get(), FIONCLEX), SyscallFailsWithErrno(EBADF)); + + EXPECT_THAT(ioctl(fd.get(), FIOCLEX), SyscallFailsWithErrno(EBADF)); +} + TEST_F(IoctlTest, FIONBIOSucceeds) { EXPECT_FALSE(CheckNonBlocking(fd())); int set = 1; diff --git a/test/syscalls/linux/link.cc b/test/syscalls/linux/link.cc index 544681168..4f9ca1a65 100644 --- a/test/syscalls/linux/link.cc +++ b/test/syscalls/linux/link.cc @@ -50,6 +50,8 @@ bool IsSameFile(const std::string& f1, const std::string& f2) { return stat1.st_dev == stat2.st_dev && stat1.st_ino == stat2.st_ino; } +// TODO(b/178640646): Add test for linkat with AT_EMPTY_PATH + TEST(LinkTest, CanCreateLinkFile) { auto oldfile = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFile()); const std::string newname = NewTempAbsPath(); @@ -235,6 +237,59 @@ TEST(LinkTest, AbsPathsWithNonDirFDs) { SyscallSucceeds()); } +TEST(LinkTest, NewDirFDWithOpath) { + SKIP_IF(IsRunningWithVFS1()); + auto oldfile = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFile()); + const std::string newname_parent = NewTempAbsPath(); + const std::string newname_base = "child"; + const std::string newname = JoinPath(newname_parent, newname_base); + + // Create newname_parent directory, and get an FD. + EXPECT_THAT(mkdir(newname_parent.c_str(), 0777), SyscallSucceeds()); + const FileDescriptor newname_parent_fd = + ASSERT_NO_ERRNO_AND_VALUE(Open(newname_parent, O_DIRECTORY | O_PATH)); + + // Link newname to oldfile, using newname_parent_fd. + EXPECT_THAT(linkat(AT_FDCWD, oldfile.path().c_str(), newname_parent_fd.get(), + newname.c_str(), 0), + SyscallSucceeds()); + + EXPECT_TRUE(IsSameFile(oldfile.path(), newname)); +} + +TEST(LinkTest, RelPathsNonDirFDsWithOpath) { + SKIP_IF(IsRunningWithVFS1()); + auto oldfile = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFile()); + + // Create a file that will be passed as the directory fd for old/new names. + TempPath path = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFile()); + FileDescriptor file_fd = ASSERT_NO_ERRNO_AND_VALUE(Open(path.path(), O_PATH)); + + // Using file_fd as olddirfd will fail. + EXPECT_THAT(linkat(file_fd.get(), "foo", AT_FDCWD, "bar", 0), + SyscallFailsWithErrno(ENOTDIR)); + + // Using file_fd as newdirfd will fail. + EXPECT_THAT(linkat(AT_FDCWD, oldfile.path().c_str(), file_fd.get(), "bar", 0), + SyscallFailsWithErrno(ENOTDIR)); +} + +TEST(LinkTest, AbsPathsNonDirFDsWithOpath) { + SKIP_IF(IsRunningWithVFS1()); + + auto oldfile = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFile()); + const std::string newname = NewTempAbsPath(); + + // Create a file that will be passed as the directory fd for old/new names. + TempPath path = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFile()); + FileDescriptor file_fd = ASSERT_NO_ERRNO_AND_VALUE(Open(path.path(), O_PATH)); + + // Using file_fd as the dirfds is OK as long as paths are absolute. + EXPECT_THAT(linkat(file_fd.get(), oldfile.path().c_str(), file_fd.get(), + newname.c_str(), 0), + SyscallSucceeds()); +} + TEST(LinkTest, LinkDoesNotFollowSymlinks) { // Create oldfile, and oldsymlink which points to it. auto oldfile = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFile()); diff --git a/test/syscalls/linux/madvise.cc b/test/syscalls/linux/madvise.cc index 5a1973f60..6e714b12c 100644 --- a/test/syscalls/linux/madvise.cc +++ b/test/syscalls/linux/madvise.cc @@ -179,9 +179,9 @@ TEST(MadviseDontforkTest, DontforkShared) { // First page is mapped in child and modifications are visible to parent // via the shared mapping. TEST_CHECK(IsMapped(ms1.addr())); - ExpectAllMappingBytes(ms1, 2); + CheckAllMappingBytes(ms1, 2); memset(ms1.ptr(), 1, kPageSize); - ExpectAllMappingBytes(ms1, 1); + CheckAllMappingBytes(ms1, 1); // Second page must not be mapped in child. TEST_CHECK(!IsMapped(ms2.addr())); @@ -222,9 +222,9 @@ TEST(MadviseDontforkTest, DontforkAnonPrivate) { // page. The mapping is private so the modifications are not visible to // the parent. TEST_CHECK(IsMapped(mp1.addr())); - ExpectAllMappingBytes(mp1, 1); + CheckAllMappingBytes(mp1, 1); memset(mp1.ptr(), 11, kPageSize); - ExpectAllMappingBytes(mp1, 11); + CheckAllMappingBytes(mp1, 11); // Verify second page is not mapped. TEST_CHECK(!IsMapped(mp2.addr())); @@ -233,9 +233,9 @@ TEST(MadviseDontforkTest, DontforkAnonPrivate) { // page. The mapping is private so the modifications are not visible to // the parent. TEST_CHECK(IsMapped(mp3.addr())); - ExpectAllMappingBytes(mp3, 3); + CheckAllMappingBytes(mp3, 3); memset(mp3.ptr(), 13, kPageSize); - ExpectAllMappingBytes(mp3, 13); + CheckAllMappingBytes(mp3, 13); }; EXPECT_THAT(InForkedProcess(rest), IsPosixErrorOkAndHolds(0)); diff --git a/test/syscalls/linux/mmap.cc b/test/syscalls/linux/mmap.cc index 83546830d..93a6d9cde 100644 --- a/test/syscalls/linux/mmap.cc +++ b/test/syscalls/linux/mmap.cc @@ -930,6 +930,18 @@ TEST_F(MMapFileTest, WriteSharedOnReadOnlyFd) { SyscallFailsWithErrno(EACCES)); } +// Mmap not allowed on O_PATH FDs. +TEST_F(MMapFileTest, MmapFileWithOpath) { + SKIP_IF(IsRunningWithVFS1()); + const TempPath file = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFile()); + const FileDescriptor fd = + ASSERT_NO_ERRNO_AND_VALUE(Open(file.path(), O_PATH)); + + uintptr_t addr; + EXPECT_THAT(addr = Map(0, kPageSize, PROT_READ, MAP_PRIVATE, fd.get(), 0), + SyscallFailsWithErrno(EBADF)); +} + // The FD must be readable. TEST_P(MMapFileParamTest, WriteOnlyFd) { const FileDescriptor fd = diff --git a/test/syscalls/linux/open.cc b/test/syscalls/linux/open.cc index fcd162ca2..733b17834 100644 --- a/test/syscalls/linux/open.cc +++ b/test/syscalls/linux/open.cc @@ -45,7 +45,7 @@ namespace { // * O_CREAT // * O_DIRECTORY // * O_NOFOLLOW -// * O_PATH <- Will we ever support this? +// * O_PATH // // Special operations on open: // * O_EXCL @@ -517,6 +517,26 @@ TEST_F(OpenTest, OpenWithStrangeFlags) { EXPECT_THAT(read(fd.get(), &c, 1), SyscallFailsWithErrno(EBADF)); } +TEST_F(OpenTest, OpenWithOpath) { + SKIP_IF(IsRunningWithVFS1()); + ASSERT_NO_ERRNO(SetCapability(CAP_DAC_OVERRIDE, false)); + ASSERT_NO_ERRNO(SetCapability(CAP_DAC_READ_SEARCH, false)); + const DisableSave ds; // Permissions are dropped. + std::string path = NewTempAbsPath(); + + // Create a file without user permissions. + const FileDescriptor fd = ASSERT_NO_ERRNO_AND_VALUE( + Open(path.c_str(), O_CREAT | O_TRUNC | O_WRONLY, 055)); + + // Cannot open file as read only because we are owner and have no permissions + // set. + EXPECT_THAT(open(path.c_str(), O_RDONLY), SyscallFailsWithErrno(EACCES)); + + // Can open file with O_PATH because don't need permissions on the object when + // opening with O_PATH. + ASSERT_NO_ERRNO(Open(path, O_PATH)); +} + } // namespace } // namespace testing diff --git a/test/syscalls/linux/packet_socket_raw.cc b/test/syscalls/linux/packet_socket_raw.cc index 2ed4f6f9c..d25be0e30 100644 --- a/test/syscalls/linux/packet_socket_raw.cc +++ b/test/syscalls/linux/packet_socket_raw.cc @@ -548,13 +548,7 @@ TEST_P(RawPacketTest, SetSocketSendBuf) { ASSERT_THAT(getsockopt(s_, SOL_SOCKET, SO_SNDBUF, &val, &val_len), SyscallSucceeds()); - // Linux doubles the value set by SO_SNDBUF/SO_RCVBUF. - // TODO(gvisor.dev/issue/2926): Remove the gvisor special casing when Netstack - // matches linux behavior. - if (!IsRunningOnGvisor()) { - quarter_sz *= 2; - } - + quarter_sz *= 2; ASSERT_EQ(quarter_sz, val); } diff --git a/test/syscalls/linux/ping_socket.cc b/test/syscalls/linux/ping_socket.cc index a9bfdb37b..999c8ab6b 100644 --- a/test/syscalls/linux/ping_socket.cc +++ b/test/syscalls/linux/ping_socket.cc @@ -31,51 +31,36 @@ namespace gvisor { namespace testing { namespace { -class PingSocket : public ::testing::Test { - protected: - // Creates a socket to be used in tests. - void SetUp() override; - - // Closes the socket created by SetUp(). - void TearDown() override; - - // The loopback address. - struct sockaddr_in addr_; -}; - -void PingSocket::SetUp() { - // On some hosts ping sockets are restricted to specific groups using the - // sysctl "ping_group_range". - int s = socket(AF_INET, SOCK_RAW, IPPROTO_ICMP); - if (s < 0 && errno == EPERM) { - GTEST_SKIP(); - } - close(s); - - addr_ = {}; - // Just a random port as the destination port number is irrelevant for ping - // sockets. - addr_.sin_port = 12345; - addr_.sin_addr.s_addr = htonl(INADDR_LOOPBACK); - addr_.sin_family = AF_INET; -} - -void PingSocket::TearDown() {} - // Test ICMP port exhaustion returns EAGAIN. // // We disable both random/cooperative S/R for this test as it makes way too many // syscalls. -TEST_F(PingSocket, ICMPPortExhaustion_NoRandomSave) { +TEST(PingSocket, ICMPPortExhaustion_NoRandomSave) { DisableSave ds; + + { + auto s = Socket(AF_INET, SOCK_DGRAM, IPPROTO_ICMP); + if (!s.ok()) { + ASSERT_EQ(s.error().errno_value(), EACCES); + GTEST_SKIP(); + } + } + + const struct sockaddr_in addr = { + .sin_family = AF_INET, + .sin_addr = + { + .s_addr = htonl(INADDR_LOOPBACK), + }, + }; + std::vector<FileDescriptor> sockets; constexpr int kSockets = 65536; - addr_.sin_port = 0; for (int i = 0; i < kSockets; i++) { auto s = ASSERT_NO_ERRNO_AND_VALUE(Socket(AF_INET, SOCK_DGRAM, IPPROTO_ICMP)); - int ret = connect(s.get(), reinterpret_cast<struct sockaddr*>(&addr_), - sizeof(addr_)); + int ret = connect(s.get(), reinterpret_cast<const struct sockaddr*>(&addr), + sizeof(addr)); if (ret == 0) { sockets.push_back(std::move(s)); continue; diff --git a/test/syscalls/linux/pread64.cc b/test/syscalls/linux/pread64.cc index bcdbbb044..c74990ba1 100644 --- a/test/syscalls/linux/pread64.cc +++ b/test/syscalls/linux/pread64.cc @@ -77,6 +77,16 @@ TEST_F(Pread64Test, WriteOnlyNotReadable) { EXPECT_THAT(pread64(fd.get(), buf, 1024, 0), SyscallFailsWithErrno(EBADF)); } +TEST_F(Pread64Test, Pread64WithOpath) { + SKIP_IF(IsRunningWithVFS1()); + const TempPath file = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFile()); + const FileDescriptor fd = + ASSERT_NO_ERRNO_AND_VALUE(Open(file.path(), O_PATH)); + + char buf[1024]; + EXPECT_THAT(pread64(fd.get(), buf, 1024, 0), SyscallFailsWithErrno(EBADF)); +} + TEST_F(Pread64Test, DirNotReadable) { const FileDescriptor fd = ASSERT_NO_ERRNO_AND_VALUE(Open(GetAbsoluteTestTmpdir(), O_RDONLY)); diff --git a/test/syscalls/linux/preadv.cc b/test/syscalls/linux/preadv.cc index 5b0743fe9..1c40f0915 100644 --- a/test/syscalls/linux/preadv.cc +++ b/test/syscalls/linux/preadv.cc @@ -89,6 +89,20 @@ TEST(PreadvTest, MMConcurrencyStress) { // The test passes if it neither deadlocks nor crashes the OS. } +// This test calls preadv with an O_PATH fd. +TEST(PreadvTest, PreadvWithOpath) { + SKIP_IF(IsRunningWithVFS1()); + const TempPath file = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFile()); + const FileDescriptor fd = + ASSERT_NO_ERRNO_AND_VALUE(Open(file.path(), O_PATH)); + + struct iovec iov; + iov.iov_base = nullptr; + iov.iov_len = 0; + + EXPECT_THAT(preadv(fd.get(), &iov, 1, 0), SyscallFailsWithErrno(EBADF)); +} + } // namespace } // namespace testing diff --git a/test/syscalls/linux/preadv2.cc b/test/syscalls/linux/preadv2.cc index 4a9acd7ae..cb58719c4 100644 --- a/test/syscalls/linux/preadv2.cc +++ b/test/syscalls/linux/preadv2.cc @@ -226,6 +226,24 @@ TEST(Preadv2Test, TestUnreadableFile) { SyscallFailsWithErrno(EBADF)); } +// This test calls preadv2 with a file opened with O_PATH. +TEST(Preadv2Test, Preadv2WithOpath) { + SKIP_IF(IsRunningWithVFS1()); + SKIP_IF(preadv2(-1, nullptr, 0, 0, 0) < 0 && errno == ENOSYS); + + const TempPath file = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFile()); + const FileDescriptor fd = + ASSERT_NO_ERRNO_AND_VALUE(Open(file.path(), O_PATH)); + + auto iov = absl::make_unique<struct iovec[]>(1); + iov[0].iov_base = nullptr; + iov[0].iov_len = 0; + + EXPECT_THAT(preadv2(fd.get(), iov.get(), /*iovcnt=*/1, /*offset=*/0, + /*flags=*/0), + SyscallFailsWithErrno(EBADF)); +} + // Calling preadv2 with a non-negative offset calls preadv. Calling preadv with // an unseekable file is not allowed. A pipe is used for an unseekable file. TEST(Preadv2Test, TestUnseekableFileInvalid) { diff --git a/test/syscalls/linux/pty.cc b/test/syscalls/linux/pty.cc index 0b174e2be..85ff258df 100644 --- a/test/syscalls/linux/pty.cc +++ b/test/syscalls/linux/pty.cc @@ -1338,6 +1338,7 @@ TEST_F(JobControlTest, SetTTYDifferentSession) { TEST_PCHECK(waitpid(grandchild, &gcwstatus, 0) == grandchild); TEST_PCHECK(gcwstatus == 0); }); + ASSERT_NO_ERRNO(res); } TEST_F(JobControlTest, ReleaseTTY) { @@ -1515,7 +1516,8 @@ TEST_F(JobControlTest, GetForegroundProcessGroupNonControlling) { // - creates a child process in a new process group // - sets that child as the foreground process group // - kills its child and sets itself as the foreground process group. -TEST_F(JobControlTest, SetForegroundProcessGroup) { +// TODO(gvisor.dev/issue/5357): Fix and enable. +TEST_F(JobControlTest, DISABLED_SetForegroundProcessGroup) { auto res = RunInChild([=]() { TEST_PCHECK(!ioctl(replica_.get(), TIOCSCTTY, 0)); @@ -1557,6 +1559,7 @@ TEST_F(JobControlTest, SetForegroundProcessGroup) { TEST_PCHECK(pgid = getpgid(0) == 0); TEST_PCHECK(!tcsetpgrp(replica_.get(), pgid)); }); + ASSERT_NO_ERRNO(res); } TEST_F(JobControlTest, SetForegroundProcessGroupWrongTTY) { @@ -1576,8 +1579,9 @@ TEST_F(JobControlTest, SetForegroundProcessGroupNegPgid) { ASSERT_NO_ERRNO(ret); } -TEST_F(JobControlTest, SetForegroundProcessGroupEmptyProcessGroup) { - auto ret = RunInChild([=]() { +// TODO(gvisor.dev/issue/5357): Fix and enable. +TEST_F(JobControlTest, DISABLED_SetForegroundProcessGroupEmptyProcessGroup) { + auto res = RunInChild([=]() { TEST_PCHECK(!ioctl(replica_.get(), TIOCSCTTY, 0)); // Create a new process, put it in a new process group, make that group the @@ -1595,6 +1599,7 @@ TEST_F(JobControlTest, SetForegroundProcessGroupEmptyProcessGroup) { TEST_PCHECK(ioctl(replica_.get(), TIOCSPGRP, &grandchild) != 0 && errno == ESRCH); }); + ASSERT_NO_ERRNO(res); } TEST_F(JobControlTest, SetForegroundProcessGroupDifferentSession) { diff --git a/test/syscalls/linux/pwrite64.cc b/test/syscalls/linux/pwrite64.cc index e69794910..1b2f25363 100644 --- a/test/syscalls/linux/pwrite64.cc +++ b/test/syscalls/linux/pwrite64.cc @@ -77,6 +77,17 @@ TEST_F(Pwrite64, Overflow) { EXPECT_THAT(close(fd), SyscallSucceeds()); } +TEST_F(Pwrite64, Pwrite64WithOpath) { + SKIP_IF(IsRunningWithVFS1()); + const TempPath file = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFile()); + const FileDescriptor fd = + ASSERT_NO_ERRNO_AND_VALUE(Open(file.path(), O_PATH)); + + std::vector<char> buf(1); + EXPECT_THAT(PwriteFd(fd.get(), buf.data(), 1, 0), + SyscallFailsWithErrno(EBADF)); +} + } // namespace } // namespace testing diff --git a/test/syscalls/linux/pwritev2.cc b/test/syscalls/linux/pwritev2.cc index 63b686c62..00aed61b4 100644 --- a/test/syscalls/linux/pwritev2.cc +++ b/test/syscalls/linux/pwritev2.cc @@ -283,6 +283,23 @@ TEST(Pwritev2Test, ReadOnlyFile) { SyscallFailsWithErrno(EBADF)); } +TEST(Pwritev2Test, Pwritev2WithOpath) { + SKIP_IF(IsRunningWithVFS1()); + SKIP_IF(pwritev2(-1, nullptr, 0, 0, 0) < 0 && errno == ENOSYS); + + const TempPath file = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFile()); + const FileDescriptor fd = + ASSERT_NO_ERRNO_AND_VALUE(Open(file.path(), O_PATH)); + + char buf[16]; + struct iovec iov; + iov.iov_base = buf; + iov.iov_len = sizeof(buf); + + EXPECT_THAT(pwritev2(fd.get(), &iov, /*iovcnt=*/1, /*offset=*/0, /*flags=*/0), + SyscallFailsWithErrno(EBADF)); +} + // This test calls pwritev2 with an invalid flag. TEST(Pwritev2Test, InvalidFlag) { SKIP_IF(pwritev2(-1, nullptr, 0, 0, 0) < 0 && errno == ENOSYS); diff --git a/test/syscalls/linux/raw_socket.cc b/test/syscalls/linux/raw_socket.cc index 955bcee4b..32924466f 100644 --- a/test/syscalls/linux/raw_socket.cc +++ b/test/syscalls/linux/raw_socket.cc @@ -621,13 +621,7 @@ TEST_P(RawSocketTest, SetSocketSendBuf) { ASSERT_THAT(getsockopt(s_, SOL_SOCKET, SO_SNDBUF, &val, &val_len), SyscallSucceeds()); - // Linux doubles the value set by SO_SNDBUF/SO_RCVBUF. - // TODO(gvisor.dev/issue/2926): Remove the gvisor special casing when Netstack - // matches linux behavior. - if (!IsRunningOnGvisor()) { - quarter_sz *= 2; - } - + quarter_sz *= 2; ASSERT_EQ(quarter_sz, val); } diff --git a/test/syscalls/linux/read.cc b/test/syscalls/linux/read.cc index 2633ba31b..98d5e432d 100644 --- a/test/syscalls/linux/read.cc +++ b/test/syscalls/linux/read.cc @@ -112,6 +112,15 @@ TEST_F(ReadTest, ReadDirectoryFails) { EXPECT_THAT(ReadFd(file.get(), buf.data(), 1), SyscallFailsWithErrno(EISDIR)); } +TEST_F(ReadTest, ReadWithOpath) { + SKIP_IF(IsRunningWithVFS1()); + const TempPath file = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFile()); + const FileDescriptor fd = + ASSERT_NO_ERRNO_AND_VALUE(Open(file.path(), O_PATH)); + std::vector<char> buf(1); + EXPECT_THAT(ReadFd(fd.get(), buf.data(), 1), SyscallFailsWithErrno(EBADF)); +} + } // namespace } // namespace testing diff --git a/test/syscalls/linux/readv.cc b/test/syscalls/linux/readv.cc index baaf9f757..86808d255 100644 --- a/test/syscalls/linux/readv.cc +++ b/test/syscalls/linux/readv.cc @@ -251,6 +251,20 @@ TEST_F(ReadvTest, IovecOutsideTaskAddressRangeInNonemptyArray) { SyscallFailsWithErrno(EFAULT)); } +TEST_F(ReadvTest, ReadvWithOpath) { + SKIP_IF(IsRunningWithVFS1()); + char buffer[1024]; + struct iovec iov[1]; + iov[0].iov_base = buffer; + iov[0].iov_len = 1024; + + TempPath tmpfile = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFile()); + FileDescriptor fd = + ASSERT_NO_ERRNO_AND_VALUE(Open(tmpfile.path().c_str(), O_PATH)); + + ASSERT_THAT(readv(fd.get(), iov, 1), SyscallFailsWithErrno(EBADF)); +} + // This test depends on the maximum extent of a single readv() syscall, so // we can't tolerate interruption from saving. TEST(ReadvTestNoFixture, TruncatedAtMax_NoRandomSave) { diff --git a/test/syscalls/linux/shm.cc b/test/syscalls/linux/shm.cc index d6e8b3e59..baf794152 100644 --- a/test/syscalls/linux/shm.cc +++ b/test/syscalls/linux/shm.cc @@ -256,32 +256,26 @@ TEST(ShmTest, IpcInfo) { } TEST(ShmTest, ShmInfo) { - struct shm_info info; - - // We generally can't know what other processes on a linux machine - // does with shared memory segments, so we can't test specific - // numbers on Linux. When running under gvisor, we're guaranteed to - // be the only ones using shm, so we can easily verify machine-wide - // numbers. - if (IsRunningOnGvisor()) { - ASSERT_NO_ERRNO(Shmctl(0, SHM_INFO, &info)); - EXPECT_EQ(info.used_ids, 0); - EXPECT_EQ(info.shm_tot, 0); - EXPECT_EQ(info.shm_rss, 0); - EXPECT_EQ(info.shm_swp, 0); - } + // Take a snapshot of the system before the test runs. + struct shm_info snap; + ASSERT_NO_ERRNO(Shmctl(0, SHM_INFO, &snap)); const ShmSegment shm = ASSERT_NO_ERRNO_AND_VALUE( Shmget(IPC_PRIVATE, kAllocSize, IPC_CREAT | 0777)); const char* addr = ASSERT_NO_ERRNO_AND_VALUE(Shmat(shm.id(), nullptr, 0)); + struct shm_info info; ASSERT_NO_ERRNO(Shmctl(1, SHM_INFO, &info)); + // We generally can't know what other processes on a linux machine do with + // shared memory segments, so we can't test specific numbers on Linux. When + // running under gvisor, we're guaranteed to be the only ones using shm, so + // we can easily verify machine-wide numbers. if (IsRunningOnGvisor()) { ASSERT_NO_ERRNO(Shmctl(shm.id(), SHM_INFO, &info)); - EXPECT_EQ(info.used_ids, 1); - EXPECT_EQ(info.shm_tot, kAllocSize / kPageSize); - EXPECT_EQ(info.shm_rss, kAllocSize / kPageSize); + EXPECT_EQ(info.used_ids, snap.used_ids + 1); + EXPECT_EQ(info.shm_tot, snap.shm_tot + (kAllocSize / kPageSize)); + EXPECT_EQ(info.shm_rss, snap.shm_rss + (kAllocSize / kPageSize)); EXPECT_EQ(info.shm_swp, 0); // Gvisor currently never swaps. } @@ -378,18 +372,18 @@ TEST(ShmDeathTest, SegmentNotAccessibleAfterDetach) { SetupGvisorDeathTest(); const auto rest = [&] { - ShmSegment shm = ASSERT_NO_ERRNO_AND_VALUE( + ShmSegment shm = TEST_CHECK_NO_ERRNO_AND_VALUE( Shmget(IPC_PRIVATE, kAllocSize, IPC_CREAT | 0777)); - char* addr = ASSERT_NO_ERRNO_AND_VALUE(Shmat(shm.id(), nullptr, 0)); + char* addr = TEST_CHECK_NO_ERRNO_AND_VALUE(Shmat(shm.id(), nullptr, 0)); // Mark the segment as destroyed so it's automatically cleaned up when we // crash below. We can't rely on the standard cleanup since the destructor // will not run after the SIGSEGV. Note that this doesn't destroy the // segment immediately since we're still attached to it. - ASSERT_NO_ERRNO(shm.Rmid()); + TEST_CHECK_NO_ERRNO(shm.Rmid()); addr[0] = 'x'; - ASSERT_NO_ERRNO(Shmdt(addr)); + TEST_CHECK_NO_ERRNO(Shmdt(addr)); // This access should cause a SIGSEGV. addr[0] = 'x'; diff --git a/test/syscalls/linux/sigiret.cc b/test/syscalls/linux/sigreturn_amd64.cc index 6227774a4..6227774a4 100644 --- a/test/syscalls/linux/sigiret.cc +++ b/test/syscalls/linux/sigreturn_amd64.cc diff --git a/test/syscalls/linux/sigreturn_arm64.cc b/test/syscalls/linux/sigreturn_arm64.cc new file mode 100644 index 000000000..2c19e2984 --- /dev/null +++ b/test/syscalls/linux/sigreturn_arm64.cc @@ -0,0 +1,97 @@ +// Copyright 2021 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 <linux/unistd.h> +#include <signal.h> +#include <sys/syscall.h> +#include <sys/types.h> +#include <sys/ucontext.h> +#include <unistd.h> + +#include "gtest/gtest.h" +#include "test/util/logging.h" +#include "test/util/signal_util.h" +#include "test/util/test_util.h" +#include "test/util/timer_util.h" + +namespace gvisor { +namespace testing { + +namespace { + +constexpr uint64_t kOrigX7 = 0xdeadbeeffacefeed; + +void sigvtalrm(int sig, siginfo_t* siginfo, void* _uc) { + ucontext_t* uc = reinterpret_cast<ucontext_t*>(_uc); + + // Verify that: + // - x7 value in mcontext_t matches kOrigX7. + if (uc->uc_mcontext.regs[7] == kOrigX7) { + // Modify the value x7 in the ucontext. This is the value seen by the + // application after the signal handler returns. + uc->uc_mcontext.regs[7] = ~kOrigX7; + } +} + +int testX7(uint64_t* val, uint64_t sysno, uint64_t tgid, uint64_t tid, + uint64_t signo) { + register uint64_t* x9 __asm__("x9") = val; + register uint64_t x8 __asm__("x8") = sysno; + register uint64_t x0 __asm__("x0") = tgid; + register uint64_t x1 __asm__("x1") = tid; + register uint64_t x2 __asm__("x2") = signo; + + // Initialize x7, send SIGVTALRM to itself and read x7. + __asm__( + "ldr x7, [x9, 0]\n" + "svc 0\n" + "str x7, [x9, 0]\n" + : "=r"(x0) + : "r"(x0), "r"(x1), "r"(x2), "r"(x9), "r"(x8) + : "x7"); + return x0; +} + +// On ARM64, when ptrace stops on a system call, it uses the x7 register to +// indicate whether the stop has been signalled from syscall entry or syscall +// exit. This means that we can't get a value of this register and we can't +// change it. More details are in the comment for tracehook_report_syscall in +// arch/arm64/kernel/ptrace.c. +// +// CheckR7 checks that the ptrace platform handles the x7 register properly. +TEST(SigreturnTest, CheckX7) { + // Setup signal handler for SIGVTALRM. + struct sigaction sa = {}; + sigfillset(&sa.sa_mask); + sa.sa_sigaction = sigvtalrm; + sa.sa_flags = SA_SIGINFO; + auto const action_cleanup = + ASSERT_NO_ERRNO_AND_VALUE(ScopedSigaction(SIGVTALRM, sa)); + + auto const mask_cleanup = + ASSERT_NO_ERRNO_AND_VALUE(ScopedSignalMask(SIG_UNBLOCK, SIGVTALRM)); + + uint64_t x7 = kOrigX7; + + testX7(&x7, __NR_tgkill, getpid(), syscall(__NR_gettid), SIGVTALRM); + + // The following check verifies that %x7 was not clobbered + // when returning from the signal handler (via sigreturn(2)). + EXPECT_EQ(x7, ~kOrigX7); +} + +} // namespace + +} // namespace testing +} // namespace gvisor diff --git a/test/syscalls/linux/socket.cc b/test/syscalls/linux/socket.cc index 32f583581..b616c2c87 100644 --- a/test/syscalls/linux/socket.cc +++ b/test/syscalls/linux/socket.cc @@ -16,6 +16,7 @@ #include <sys/stat.h> #include <sys/statfs.h> #include <sys/types.h> +#include <sys/wait.h> #include <unistd.h> #include "gtest/gtest.h" @@ -90,8 +91,7 @@ TEST(SocketTest, UnixSocketStat) { EXPECT_EQ(statbuf.st_mode, S_IFSOCK | (sock_perm & ~mask)); // Timestamps should be equal and non-zero. - // TODO(b/158882152): Sockets currently don't implement timestamps. - if (!IsRunningOnGvisor()) { + if (!IsRunningWithVFS1()) { EXPECT_NE(statbuf.st_atime, 0); EXPECT_EQ(statbuf.st_atime, statbuf.st_mtime); EXPECT_EQ(statbuf.st_atime, statbuf.st_ctime); @@ -111,6 +111,77 @@ TEST(SocketTest, UnixSocketStatFS) { EXPECT_EQ(st.f_namelen, NAME_MAX); } +TEST(SocketTest, UnixSCMRightsOnlyPassedOnce_NoRandomSave) { + const DisableSave ds; + + int sockets[2]; + ASSERT_THAT(socketpair(AF_UNIX, SOCK_STREAM, 0, sockets), SyscallSucceeds()); + // Send more than what will fit inside the send/receive buffers, so that it is + // split into multiple messages. + constexpr int kBufSize = 0x100000; + + pid_t pid = fork(); + if (pid == 0) { + TEST_PCHECK(close(sockets[0]) == 0); + + // Construct a message with some control message. + struct msghdr msg = {}; + char control[CMSG_SPACE(sizeof(int))] = {}; + std::vector<char> buf(kBufSize); + struct iovec iov = {}; + msg.msg_control = control; + msg.msg_controllen = sizeof(control); + + struct cmsghdr* cmsg = CMSG_FIRSTHDR(&msg); + cmsg->cmsg_len = CMSG_LEN(sizeof(int)); + cmsg->cmsg_level = SOL_SOCKET; + cmsg->cmsg_type = SCM_RIGHTS; + ((int*)CMSG_DATA(cmsg))[0] = sockets[1]; + + iov.iov_base = buf.data(); + iov.iov_len = kBufSize; + msg.msg_iov = &iov; + msg.msg_iovlen = 1; + + int n = sendmsg(sockets[1], &msg, 0); + TEST_PCHECK(n == kBufSize); + TEST_PCHECK(shutdown(sockets[1], SHUT_RDWR) == 0); + TEST_PCHECK(close(sockets[1]) == 0); + _exit(0); + } + + close(sockets[1]); + + struct msghdr msg = {}; + char control[CMSG_SPACE(sizeof(int))] = {}; + std::vector<char> buf(kBufSize); + struct iovec iov = {}; + msg.msg_control = &control; + msg.msg_controllen = sizeof(control); + + iov.iov_base = buf.data(); + iov.iov_len = kBufSize; + msg.msg_iov = &iov; + msg.msg_iovlen = 1; + + // The control message should only be present in the first message received. + int n; + ASSERT_THAT(n = recvmsg(sockets[0], &msg, 0), SyscallSucceeds()); + ASSERT_GT(n, 0); + ASSERT_EQ(msg.msg_controllen, CMSG_SPACE(sizeof(int))); + + while (n > 0) { + ASSERT_THAT(n = recvmsg(sockets[0], &msg, 0), SyscallSucceeds()); + ASSERT_EQ(msg.msg_controllen, 0); + } + + close(sockets[0]); + + int status; + ASSERT_THAT(waitpid(pid, &status, 0), SyscallSucceedsWithValue(pid)); + ASSERT_TRUE(WIFEXITED(status) && WEXITSTATUS(status) == 0); +} + using SocketOpenTest = ::testing::TestWithParam<int>; // UDS cannot be opened. diff --git a/test/syscalls/linux/socket_ip_tcp_generic.cc b/test/syscalls/linux/socket_ip_tcp_generic.cc index 831d96262..a73987a7e 100644 --- a/test/syscalls/linux/socket_ip_tcp_generic.cc +++ b/test/syscalls/linux/socket_ip_tcp_generic.cc @@ -65,6 +65,33 @@ TEST_P(TCPSocketPairTest, ZeroTcpInfoSucceeds) { SyscallSucceeds()); } +TEST_P(TCPSocketPairTest, CheckTcpInfoFields) { + auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); + + char buf[10] = {}; + ASSERT_THAT(RetryEINTR(send)(sockets->first_fd(), buf, sizeof(buf), 0), + SyscallSucceedsWithValue(sizeof(buf))); + + // Wait until second_fd sees the data and then recv it. + struct pollfd poll_fd = {sockets->second_fd(), POLLIN, 0}; + constexpr int kPollTimeoutMs = 2000; // Wait up to 2 seconds for the data. + ASSERT_THAT(RetryEINTR(poll)(&poll_fd, 1, kPollTimeoutMs), + SyscallSucceedsWithValue(1)); + + ASSERT_THAT(RetryEINTR(recv)(sockets->second_fd(), buf, sizeof(buf), 0), + SyscallSucceedsWithValue(sizeof(buf))); + + struct tcp_info opt = {}; + socklen_t optLen = sizeof(opt); + ASSERT_THAT(getsockopt(sockets->first_fd(), SOL_TCP, TCP_INFO, &opt, &optLen), + SyscallSucceeds()); + + // Validates the received tcp_info fields. + EXPECT_EQ(opt.tcpi_ca_state, 0); + EXPECT_GT(opt.tcpi_snd_cwnd, 0); + EXPECT_GT(opt.tcpi_rto, 0); +} + // This test validates that an RST is sent instead of a FIN when data is // unread on calls to close(2). TEST_P(TCPSocketPairTest, RSTSentOnCloseWithUnreadData) { diff --git a/test/syscalls/linux/socket_ipv4_udp_unbound.cc b/test/syscalls/linux/socket_ipv4_udp_unbound.cc index e557572a7..8eec31a46 100644 --- a/test/syscalls/linux/socket_ipv4_udp_unbound.cc +++ b/test/syscalls/linux/socket_ipv4_udp_unbound.cc @@ -2513,11 +2513,7 @@ TEST_P(IPv4UDPUnboundSocketTest, SetSocketSendBuf) { ASSERT_THAT(getsockopt(s->get(), SOL_SOCKET, SO_SNDBUF, &val, &val_len), SyscallSucceeds()); - // Linux doubles the value set by SO_SNDBUF/SO_RCVBUF. - if (!IsRunningOnGvisor()) { - quarter_sz *= 2; - } - + quarter_sz *= 2; ASSERT_EQ(quarter_sz, val); } diff --git a/test/syscalls/linux/socket_unix_cmsg.cc b/test/syscalls/linux/socket_unix_cmsg.cc index a16899493..22a4ee0d1 100644 --- a/test/syscalls/linux/socket_unix_cmsg.cc +++ b/test/syscalls/linux/socket_unix_cmsg.cc @@ -362,7 +362,7 @@ TEST_P(UnixSocketPairCmsgTest, BasicThreeFDPassTruncationMsgCtrunc) { // BasicFDPassUnalignedRecv starts off by sending a single FD just like // BasicFDPass. The difference is that when calling recvmsg, the length of the -// receive data is only aligned on a 4 byte boundry instead of the normal 8. +// receive data is only aligned on a 4 byte boundary instead of the normal 8. TEST_P(UnixSocketPairCmsgTest, BasicFDPassUnalignedRecv) { auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); diff --git a/test/syscalls/linux/stat.cc b/test/syscalls/linux/stat.cc index 6e7142a42..72f888659 100644 --- a/test/syscalls/linux/stat.cc +++ b/test/syscalls/linux/stat.cc @@ -221,6 +221,43 @@ TEST_F(StatTest, TrailingSlashNotCleanedReturnsENOTDIR) { EXPECT_THAT(lstat(bad_path.c_str(), &buf), SyscallFailsWithErrno(ENOTDIR)); } +TEST_F(StatTest, FstatFileWithOpath) { + SKIP_IF(IsRunningWithVFS1()); + struct stat st; + TempPath tmpfile = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFile()); + FileDescriptor fd = + ASSERT_NO_ERRNO_AND_VALUE(Open(tmpfile.path().c_str(), O_PATH)); + + // Stat the directory. + ASSERT_THAT(fstat(fd.get(), &st), SyscallSucceeds()); +} + +TEST_F(StatTest, FstatDirWithOpath) { + SKIP_IF(IsRunningWithVFS1()); + struct stat st; + TempPath tmpdir = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateDir()); + FileDescriptor dirfd = ASSERT_NO_ERRNO_AND_VALUE( + Open(tmpdir.path().c_str(), O_PATH | O_DIRECTORY)); + + // Stat the directory. + ASSERT_THAT(fstat(dirfd.get(), &st), SyscallSucceeds()); +} + +// fstatat with an O_PATH fd +TEST_F(StatTest, FstatatDirWithOpath) { + SKIP_IF(IsRunningWithVFS1()); + TempPath tmpdir = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateDir()); + FileDescriptor dirfd = ASSERT_NO_ERRNO_AND_VALUE( + Open(tmpdir.path().c_str(), O_PATH | O_DIRECTORY)); + TempPath tmpfile = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFile()); + + struct stat st = {}; + EXPECT_THAT(fstatat(dirfd.get(), tmpfile.path().c_str(), &st, 0), + SyscallSucceeds()); + EXPECT_FALSE(S_ISDIR(st.st_mode)); + EXPECT_TRUE(S_ISREG(st.st_mode)); +} + // Test fstatating a symlink directory. TEST_F(StatTest, FstatatSymlinkDir) { // Create a directory and symlink to it. diff --git a/test/syscalls/linux/statfs.cc b/test/syscalls/linux/statfs.cc index f0fb166bd..d4ea8e026 100644 --- a/test/syscalls/linux/statfs.cc +++ b/test/syscalls/linux/statfs.cc @@ -64,6 +64,16 @@ TEST(FstatfsTest, InternalTmpfs) { EXPECT_THAT(fstatfs(fd.get(), &st), SyscallSucceeds()); } +TEST(FstatfsTest, CanStatFileWithOpath) { + SKIP_IF(IsRunningWithVFS1()); + auto temp_file = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFile()); + const FileDescriptor fd = + ASSERT_NO_ERRNO_AND_VALUE(Open(temp_file.path(), O_PATH)); + + struct statfs st; + EXPECT_THAT(fstatfs(fd.get(), &st), SyscallSucceeds()); +} + TEST(FstatfsTest, InternalDevShm) { auto temp_file = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFile()); const FileDescriptor fd = diff --git a/test/syscalls/linux/symlink.cc b/test/syscalls/linux/symlink.cc index 4d9eba7f0..ea219a091 100644 --- a/test/syscalls/linux/symlink.cc +++ b/test/syscalls/linux/symlink.cc @@ -269,6 +269,36 @@ TEST(SymlinkTest, SymlinkAtDegradedPermissions_NoRandomSave) { EXPECT_THAT(close(dirfd), SyscallSucceeds()); } +TEST(SymlinkTest, SymlinkAtDirWithOpath) { + SKIP_IF(IsRunningWithVFS1()); + auto dir = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateDir()); + const std::string filepath = NewTempAbsPathInDir(dir.path()); + const std::string base = std::string(Basename(filepath)); + FileDescriptor dirfd = + ASSERT_NO_ERRNO_AND_VALUE(Open(dir.path().c_str(), O_DIRECTORY | O_PATH)); + + EXPECT_THAT(symlinkat("/dangling", dirfd.get(), base.c_str()), + SyscallSucceeds()); +} + +TEST(SymlinkTest, ReadlinkAtDirWithOpath) { + SKIP_IF(IsRunningWithVFS1()); + auto dir = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateDir()); + const std::string filepath = NewTempAbsPathInDir(dir.path()); + const std::string base = std::string(Basename(filepath)); + ASSERT_THAT(symlink("/dangling", filepath.c_str()), SyscallSucceeds()); + + FileDescriptor dirfd = + ASSERT_NO_ERRNO_AND_VALUE(Open(dir.path().c_str(), O_DIRECTORY | O_PATH)); + + std::vector<char> buf(1024); + int linksize; + EXPECT_THAT( + linksize = readlinkat(dirfd.get(), base.c_str(), buf.data(), 1024), + SyscallSucceeds()); + EXPECT_EQ(0, strncmp("/dangling", buf.data(), linksize)); +} + TEST(SymlinkTest, ReadlinkAtDegradedPermissions_NoRandomSave) { // Drop capabilities that allow us to override file and directory permissions. ASSERT_NO_ERRNO(SetCapability(CAP_DAC_OVERRIDE, false)); diff --git a/test/syscalls/linux/sync.cc b/test/syscalls/linux/sync.cc index 8aa2525a9..84a2c4ed7 100644 --- a/test/syscalls/linux/sync.cc +++ b/test/syscalls/linux/sync.cc @@ -49,10 +49,20 @@ TEST(SyncTest, SyncFromPipe) { EXPECT_THAT(close(pipes[1]), SyscallSucceeds()); } -TEST(SyncTest, CannotSyncFileSytemAtBadFd) { +TEST(SyncTest, CannotSyncFileSystemAtBadFd) { EXPECT_THAT(syncfs(-1), SyscallFailsWithErrno(EBADF)); } +TEST(SyncTest, CannotSyncFileSystemAtOpathFD) { + SKIP_IF(IsRunningWithVFS1()); + + const TempPath file = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFileWith( + GetAbsoluteTestTmpdir(), "", TempPath::kDefaultFileMode)); + const FileDescriptor fd = + ASSERT_NO_ERRNO_AND_VALUE(Open(file.path(), O_PATH)); + + EXPECT_THAT(syncfs(fd.get()), SyscallFailsWithErrno(EBADF)); +} } // namespace } // namespace testing diff --git a/test/syscalls/linux/tcp_socket.cc b/test/syscalls/linux/tcp_socket.cc index 714848b8e..9028ab024 100644 --- a/test/syscalls/linux/tcp_socket.cc +++ b/test/syscalls/linux/tcp_socket.cc @@ -2008,6 +2008,29 @@ TEST_P(SimpleTcpSocketTest, GetSocketAcceptConnWithShutdown) { EXPECT_EQ(got, 0); } +// Tests that connecting to an unspecified address results in ECONNREFUSED. +TEST_P(SimpleTcpSocketTest, ConnectUnspecifiedAddress) { + sockaddr_storage addr; + socklen_t addrlen = sizeof(addr); + memset(&addr, 0, addrlen); + addr.ss_family = GetParam(); + auto do_connect = [&addr, addrlen]() { + FileDescriptor s = ASSERT_NO_ERRNO_AND_VALUE( + Socket(addr.ss_family, SOCK_STREAM, IPPROTO_TCP)); + ASSERT_THAT( + RetryEINTR(connect)(s.get(), reinterpret_cast<struct sockaddr*>(&addr), + addrlen), + SyscallFailsWithErrno(ECONNREFUSED)); + }; + do_connect(); + // Test the v4 mapped address as well. + if (GetParam() == AF_INET6) { + auto sin6 = reinterpret_cast<struct sockaddr_in6*>(&addr); + sin6->sin6_addr.s6_addr[10] = sin6->sin6_addr.s6_addr[11] = 0xff; + do_connect(); + } +} + INSTANTIATE_TEST_SUITE_P(AllInetTests, SimpleTcpSocketTest, ::testing::Values(AF_INET, AF_INET6)); diff --git a/test/syscalls/linux/truncate.cc b/test/syscalls/linux/truncate.cc index bfc95ed38..17832c47d 100644 --- a/test/syscalls/linux/truncate.cc +++ b/test/syscalls/linux/truncate.cc @@ -196,6 +196,16 @@ TEST(TruncateTest, FtruncateNonWriteable) { EXPECT_THAT(ftruncate(fd.get(), 0), SyscallFailsWithErrno(EINVAL)); } +TEST(TruncateTest, FtruncateWithOpath) { + SKIP_IF(IsRunningWithVFS1()); + auto temp_file = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFileWith( + GetAbsoluteTestTmpdir(), absl::string_view(), 0555 /* mode */)); + const FileDescriptor fd = + ASSERT_NO_ERRNO_AND_VALUE(Open(temp_file.path(), O_PATH)); + EXPECT_THAT(ftruncate(fd.get(), 0), AnyOf(SyscallFailsWithErrno(EBADF), + SyscallFailsWithErrno(EINVAL))); +} + // ftruncate(2) should succeed as long as the file descriptor is writeable, // regardless of whether the file permissions allow writing. TEST(TruncateTest, FtruncateWithoutWritePermission_NoRandomSave) { diff --git a/test/syscalls/linux/write.cc b/test/syscalls/linux/write.cc index 77bcfbb8a..740992d0a 100644 --- a/test/syscalls/linux/write.cc +++ b/test/syscalls/linux/write.cc @@ -218,6 +218,44 @@ TEST_F(WriteTest, PwriteNoChangeOffset) { EXPECT_THAT(lseek(fd, 0, SEEK_CUR), SyscallSucceedsWithValue(bytes_total)); } +TEST_F(WriteTest, WriteWithOpath) { + SKIP_IF(IsRunningWithVFS1()); + TempPath tmpfile = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFile()); + FileDescriptor f = + ASSERT_NO_ERRNO_AND_VALUE(Open(tmpfile.path().c_str(), O_PATH)); + int fd = f.get(); + + EXPECT_THAT(WriteBytes(fd, 1024), SyscallFailsWithErrno(EBADF)); +} + +TEST_F(WriteTest, WritevWithOpath) { + SKIP_IF(IsRunningWithVFS1()); + TempPath tmpfile = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFile()); + FileDescriptor f = + ASSERT_NO_ERRNO_AND_VALUE(Open(tmpfile.path().c_str(), O_PATH)); + int fd = f.get(); + + char buf[16]; + struct iovec iov; + iov.iov_base = buf; + iov.iov_len = sizeof(buf); + + EXPECT_THAT(writev(fd, &iov, /*__count=*/1), SyscallFailsWithErrno(EBADF)); +} + +TEST_F(WriteTest, PwriteWithOpath) { + SKIP_IF(IsRunningWithVFS1()); + TempPath tmpfile = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFile()); + FileDescriptor f = + ASSERT_NO_ERRNO_AND_VALUE(Open(tmpfile.path().c_str(), O_PATH)); + int fd = f.get(); + + const std::string data = "hello world\n"; + + EXPECT_THAT(pwrite(fd, data.data(), data.size(), 0), + SyscallFailsWithErrno(EBADF)); +} + } // namespace } // namespace testing diff --git a/test/syscalls/linux/xattr.cc b/test/syscalls/linux/xattr.cc index bd3f829c4..a953a55fe 100644 --- a/test/syscalls/linux/xattr.cc +++ b/test/syscalls/linux/xattr.cc @@ -607,6 +607,27 @@ TEST_F(XattrTest, XattrWithFD) { EXPECT_THAT(fremovexattr(fd.get(), name), SyscallSucceeds()); } +TEST_F(XattrTest, XattrWithOPath) { + SKIP_IF(IsRunningWithVFS1()); + const FileDescriptor fd = + ASSERT_NO_ERRNO_AND_VALUE(Open(test_file_name_.c_str(), O_PATH)); + const char name[] = "user.test"; + int val = 1234; + size_t size = sizeof(val); + EXPECT_THAT(fsetxattr(fd.get(), name, &val, size, /*flags=*/0), + SyscallFailsWithErrno(EBADF)); + + int buf; + EXPECT_THAT(fgetxattr(fd.get(), name, &buf, size), + SyscallFailsWithErrno(EBADF)); + + char list[sizeof(name)]; + EXPECT_THAT(flistxattr(fd.get(), list, sizeof(list)), + SyscallFailsWithErrno(EBADF)); + + EXPECT_THAT(fremovexattr(fd.get(), name), SyscallFailsWithErrno(EBADF)); +} + TEST_F(XattrTest, TrustedNamespaceWithCapSysAdmin) { // Trusted namespace not supported in VFS1. SKIP_IF(IsRunningWithVFS1()); |