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// Copyright 2018 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
// +build darwin,go1.12,amd64 darwin,go1.12,386
package unix
import (
"os"
"os/exec"
"strings"
"testing"
)
type darwinTest struct {
name string
f func()
}
// TODO(khr): decide whether to keep this test enabled permanently or
// only temporarily.
func TestDarwinLoader(t *testing.T) {
// Make sure the Darwin dynamic loader can actually resolve
// all the system calls into libSystem.dylib. Unfortunately
// there is no easy way to test this at compile time. So we
// implement a crazy hack here, calling into the syscall
// function with all its arguments set to junk, and see what
// error we get. We are happy with any error (or none) except
// an error from the dynamic loader.
//
// We have to run each test in a separate subprocess for fault isolation.
//
// Hopefully the junk args won't accidentally ask the system to do "rm -fr /".
//
// In an ideal world each syscall would have its own test, so this test
// would be unnecessary. Unfortunately, we do not live in that world.
for _, test := range darwinTests {
// Call the test binary recursively, giving it a magic argument
// (see init below) and the name of the test to run.
cmd := exec.Command(os.Args[0], "testDarwinLoader", test.name)
// Run subprocess, collect results. Note that we expect the subprocess
// to fail somehow, so the error is irrelevant.
out, _ := cmd.CombinedOutput()
if strings.Contains(string(out), "dyld: Symbol not found:") {
t.Errorf("can't resolve %s in libSystem.dylib", test.name)
}
if !strings.Contains(string(out), "success") {
// Not really an error. Might be a syscall that never returns,
// like exit, or one that segfaults, like gettimeofday.
t.Logf("test never finished: %s: %s", test.name, string(out))
}
}
}
func init() {
// The test binary execs itself with the "testDarwinLoader" argument.
// Run the test specified by os.Args[2], then panic.
if len(os.Args) >= 3 && os.Args[1] == "testDarwinLoader" {
for _, test := range darwinTests {
if test.name == os.Args[2] {
test.f()
}
}
// Panic with a "success" label, so the parent process can check it.
panic("success")
}
}
// All the _trampoline functions in zsyscall_darwin_$ARCH.s
var darwinTests = [...]darwinTest{
{"getgroups", libc_getgroups_trampoline},
{"setgroups", libc_setgroups_trampoline},
{"wait4", libc_wait4_trampoline},
{"accept", libc_accept_trampoline},
{"bind", libc_bind_trampoline},
{"connect", libc_connect_trampoline},
{"socket", libc_socket_trampoline},
{"getsockopt", libc_getsockopt_trampoline},
{"setsockopt", libc_setsockopt_trampoline},
{"getpeername", libc_getpeername_trampoline},
{"getsockname", libc_getsockname_trampoline},
{"shutdown", libc_shutdown_trampoline},
{"socketpair", libc_socketpair_trampoline},
{"recvfrom", libc_recvfrom_trampoline},
{"sendto", libc_sendto_trampoline},
{"recvmsg", libc_recvmsg_trampoline},
{"sendmsg", libc_sendmsg_trampoline},
{"kevent", libc_kevent_trampoline},
{"__sysctl", libc___sysctl_trampoline},
{"utimes", libc_utimes_trampoline},
{"futimes", libc_futimes_trampoline},
{"fcntl", libc_fcntl_trampoline},
{"poll", libc_poll_trampoline},
{"madvise", libc_madvise_trampoline},
{"mlock", libc_mlock_trampoline},
{"mlockall", libc_mlockall_trampoline},
{"mprotect", libc_mprotect_trampoline},
{"msync", libc_msync_trampoline},
{"munlock", libc_munlock_trampoline},
{"munlockall", libc_munlockall_trampoline},
{"ptrace", libc_ptrace_trampoline},
{"pipe", libc_pipe_trampoline},
{"getxattr", libc_getxattr_trampoline},
{"fgetxattr", libc_fgetxattr_trampoline},
{"setxattr", libc_setxattr_trampoline},
{"fsetxattr", libc_fsetxattr_trampoline},
{"removexattr", libc_removexattr_trampoline},
{"fremovexattr", libc_fremovexattr_trampoline},
{"listxattr", libc_listxattr_trampoline},
{"flistxattr", libc_flistxattr_trampoline},
{"kill", libc_kill_trampoline},
{"ioctl", libc_ioctl_trampoline},
{"access", libc_access_trampoline},
{"adjtime", libc_adjtime_trampoline},
{"chdir", libc_chdir_trampoline},
{"chflags", libc_chflags_trampoline},
{"chmod", libc_chmod_trampoline},
{"chown", libc_chown_trampoline},
{"chroot", libc_chroot_trampoline},
{"close", libc_close_trampoline},
{"dup", libc_dup_trampoline},
{"dup2", libc_dup2_trampoline},
{"exchangedata", libc_exchangedata_trampoline},
{"exit", libc_exit_trampoline},
{"faccessat", libc_faccessat_trampoline},
{"fchdir", libc_fchdir_trampoline},
{"fchflags", libc_fchflags_trampoline},
{"fchmod", libc_fchmod_trampoline},
{"fchmodat", libc_fchmodat_trampoline},
{"fchown", libc_fchown_trampoline},
{"fchownat", libc_fchownat_trampoline},
{"flock", libc_flock_trampoline},
{"fpathconf", libc_fpathconf_trampoline},
{"fstat64", libc_fstat64_trampoline},
{"fstatat64", libc_fstatat64_trampoline},
{"fstatfs64", libc_fstatfs64_trampoline},
{"fsync", libc_fsync_trampoline},
{"ftruncate", libc_ftruncate_trampoline},
{"__getdirentries64", libc___getdirentries64_trampoline},
{"getdtablesize", libc_getdtablesize_trampoline},
{"getegid", libc_getegid_trampoline},
{"geteuid", libc_geteuid_trampoline},
{"getgid", libc_getgid_trampoline},
{"getpgid", libc_getpgid_trampoline},
{"getpgrp", libc_getpgrp_trampoline},
{"getpid", libc_getpid_trampoline},
{"getppid", libc_getppid_trampoline},
{"getpriority", libc_getpriority_trampoline},
{"getrlimit", libc_getrlimit_trampoline},
{"getrusage", libc_getrusage_trampoline},
{"getsid", libc_getsid_trampoline},
{"getuid", libc_getuid_trampoline},
{"issetugid", libc_issetugid_trampoline},
{"kqueue", libc_kqueue_trampoline},
{"lchown", libc_lchown_trampoline},
{"link", libc_link_trampoline},
{"linkat", libc_linkat_trampoline},
{"listen", libc_listen_trampoline},
{"lstat64", libc_lstat64_trampoline},
{"mkdir", libc_mkdir_trampoline},
{"mkdirat", libc_mkdirat_trampoline},
{"mkfifo", libc_mkfifo_trampoline},
{"mknod", libc_mknod_trampoline},
{"open", libc_open_trampoline},
{"openat", libc_openat_trampoline},
{"pathconf", libc_pathconf_trampoline},
{"pread", libc_pread_trampoline},
{"pwrite", libc_pwrite_trampoline},
{"read", libc_read_trampoline},
{"readlink", libc_readlink_trampoline},
{"readlinkat", libc_readlinkat_trampoline},
{"rename", libc_rename_trampoline},
{"renameat", libc_renameat_trampoline},
{"revoke", libc_revoke_trampoline},
{"rmdir", libc_rmdir_trampoline},
{"lseek", libc_lseek_trampoline},
{"select", libc_select_trampoline},
{"setegid", libc_setegid_trampoline},
{"seteuid", libc_seteuid_trampoline},
{"setgid", libc_setgid_trampoline},
{"setlogin", libc_setlogin_trampoline},
{"setpgid", libc_setpgid_trampoline},
{"setpriority", libc_setpriority_trampoline},
{"setprivexec", libc_setprivexec_trampoline},
{"setregid", libc_setregid_trampoline},
{"setreuid", libc_setreuid_trampoline},
{"setrlimit", libc_setrlimit_trampoline},
{"setsid", libc_setsid_trampoline},
{"settimeofday", libc_settimeofday_trampoline},
{"setuid", libc_setuid_trampoline},
{"stat64", libc_stat64_trampoline},
{"statfs64", libc_statfs64_trampoline},
{"symlink", libc_symlink_trampoline},
{"symlinkat", libc_symlinkat_trampoline},
{"sync", libc_sync_trampoline},
{"truncate", libc_truncate_trampoline},
{"umask", libc_umask_trampoline},
{"undelete", libc_undelete_trampoline},
{"unlink", libc_unlink_trampoline},
{"unlinkat", libc_unlinkat_trampoline},
{"unmount", libc_unmount_trampoline},
{"write", libc_write_trampoline},
{"mmap", libc_mmap_trampoline},
{"munmap", libc_munmap_trampoline},
{"gettimeofday", libc_gettimeofday_trampoline},
{"getfsstat64", libc_getfsstat64_trampoline},
}
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