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| 1 | +// Copyright 2018 The Go Authors. All rights reserved. |
| 2 | +// Use of this source code is governed by a BSD-style |
| 3 | +// license that can be found in the LICENSE file. |
| 4 | + |
| 5 | +// +build darwin,go1.12,amd64 darwin,go1.12,386 |
| 6 | + |
| 7 | +package unix |
| 8 | + |
| 9 | +import ( |
| 10 | + "os" |
| 11 | + "os/exec" |
| 12 | + "strings" |
| 13 | + "testing" |
| 14 | +) |
| 15 | + |
| 16 | +type darwinTest struct { |
| 17 | + name string |
| 18 | + f func() |
| 19 | +} |
| 20 | + |
| 21 | +// TODO(khr): decide whether to keep this test enabled permanently or |
| 22 | +// only temporarily. |
| 23 | +func TestDarwinLoader(t *testing.T) { |
| 24 | + // Make sure the Darwin dynamic loader can actually resolve |
| 25 | + // all the system calls into libSystem.dylib. Unfortunately |
| 26 | + // there is no easy way to test this at compile time. So we |
| 27 | + // implement a crazy hack here, calling into the syscall |
| 28 | + // function with all its arguments set to junk, and see what |
| 29 | + // error we get. We are happy with any error (or none) except |
| 30 | + // an error from the dynamic loader. |
| 31 | + // |
| 32 | + // We have to run each test in a separate subprocess for fault isolation. |
| 33 | + // |
| 34 | + // Hopefully the junk args won't accidentally ask the system to do "rm -fr /". |
| 35 | + // |
| 36 | + // In an ideal world each syscall would have its own test, so this test |
| 37 | + // would be unnecessary. Unfortunately, we do not live in that world. |
| 38 | + for _, test := range darwinTests { |
| 39 | + // Call the test binary recursively, giving it a magic argument |
| 40 | + // (see init below) and the name of the test to run. |
| 41 | + cmd := exec.Command(os.Args[0], "testDarwinLoader", test.name) |
| 42 | + |
| 43 | + // Run subprocess, collect results. Note that we expect the subprocess |
| 44 | + // to fail somehow, so the error is irrelevant. |
| 45 | + out, _ := cmd.CombinedOutput() |
| 46 | + |
| 47 | + if strings.Contains(string(out), "dyld: Symbol not found:") { |
| 48 | + t.Errorf("can't resolve %s in libSystem.dylib", test.name) |
| 49 | + } |
| 50 | + if !strings.Contains(string(out), "success") { |
| 51 | + // Not really an error. Might be a syscall that never returns, |
| 52 | + // like exit, or one that segfaults, like gettimeofday. |
| 53 | + t.Logf("test never finished: %s: %s", test.name, string(out)) |
| 54 | + } |
| 55 | + } |
| 56 | +} |
| 57 | + |
| 58 | +func init() { |
| 59 | + // The test binary execs itself with the "testDarwinLoader" argument. |
| 60 | + // Run the test specified by os.Args[2], then panic. |
| 61 | + if len(os.Args) >= 3 && os.Args[1] == "testDarwinLoader" { |
| 62 | + for _, test := range darwinTests { |
| 63 | + if test.name == os.Args[2] { |
| 64 | + test.f() |
| 65 | + } |
| 66 | + } |
| 67 | + // Panic with a "success" label, so the parent process can check it. |
| 68 | + panic("success") |
| 69 | + } |
| 70 | +} |
| 71 | + |
| 72 | +// All the _trampoline functions in zsyscall_darwin_$ARCH.1_12.s |
| 73 | +var darwinTests = [...]darwinTest{ |
| 74 | + {"getgroups", libc_getgroups_trampoline}, |
| 75 | + {"setgroups", libc_setgroups_trampoline}, |
| 76 | + {"wait4", libc_wait4_trampoline}, |
| 77 | + {"accept", libc_accept_trampoline}, |
| 78 | + {"bind", libc_bind_trampoline}, |
| 79 | + {"connect", libc_connect_trampoline}, |
| 80 | + {"socket", libc_socket_trampoline}, |
| 81 | + {"getsockopt", libc_getsockopt_trampoline}, |
| 82 | + {"setsockopt", libc_setsockopt_trampoline}, |
| 83 | + {"getpeername", libc_getpeername_trampoline}, |
| 84 | + {"getsockname", libc_getsockname_trampoline}, |
| 85 | + {"shutdown", libc_shutdown_trampoline}, |
| 86 | + {"socketpair", libc_socketpair_trampoline}, |
| 87 | + {"recvfrom", libc_recvfrom_trampoline}, |
| 88 | + {"sendto", libc_sendto_trampoline}, |
| 89 | + {"recvmsg", libc_recvmsg_trampoline}, |
| 90 | + {"sendmsg", libc_sendmsg_trampoline}, |
| 91 | + {"kevent", libc_kevent_trampoline}, |
| 92 | + {"__sysctl", libc___sysctl_trampoline}, |
| 93 | + {"utimes", libc_utimes_trampoline}, |
| 94 | + {"futimes", libc_futimes_trampoline}, |
| 95 | + {"fcntl", libc_fcntl_trampoline}, |
| 96 | + {"poll", libc_poll_trampoline}, |
| 97 | + {"madvise", libc_madvise_trampoline}, |
| 98 | + {"mlock", libc_mlock_trampoline}, |
| 99 | + {"mlockall", libc_mlockall_trampoline}, |
| 100 | + {"mprotect", libc_mprotect_trampoline}, |
| 101 | + {"msync", libc_msync_trampoline}, |
| 102 | + {"munlock", libc_munlock_trampoline}, |
| 103 | + {"munlockall", libc_munlockall_trampoline}, |
| 104 | + {"ptrace", libc_ptrace_trampoline}, |
| 105 | + {"pipe", libc_pipe_trampoline}, |
| 106 | + {"getxattr", libc_getxattr_trampoline}, |
| 107 | + {"fgetxattr", libc_fgetxattr_trampoline}, |
| 108 | + {"setxattr", libc_setxattr_trampoline}, |
| 109 | + {"fsetxattr", libc_fsetxattr_trampoline}, |
| 110 | + {"removexattr", libc_removexattr_trampoline}, |
| 111 | + {"fremovexattr", libc_fremovexattr_trampoline}, |
| 112 | + {"listxattr", libc_listxattr_trampoline}, |
| 113 | + {"flistxattr", libc_flistxattr_trampoline}, |
| 114 | + {"kill", libc_kill_trampoline}, |
| 115 | + {"ioctl", libc_ioctl_trampoline}, |
| 116 | + {"access", libc_access_trampoline}, |
| 117 | + {"adjtime", libc_adjtime_trampoline}, |
| 118 | + {"chdir", libc_chdir_trampoline}, |
| 119 | + {"chflags", libc_chflags_trampoline}, |
| 120 | + {"chmod", libc_chmod_trampoline}, |
| 121 | + {"chown", libc_chown_trampoline}, |
| 122 | + {"chroot", libc_chroot_trampoline}, |
| 123 | + {"close", libc_close_trampoline}, |
| 124 | + {"dup", libc_dup_trampoline}, |
| 125 | + {"dup2", libc_dup2_trampoline}, |
| 126 | + {"exchangedata", libc_exchangedata_trampoline}, |
| 127 | + {"exit", libc_exit_trampoline}, |
| 128 | + {"faccessat", libc_faccessat_trampoline}, |
| 129 | + {"fchdir", libc_fchdir_trampoline}, |
| 130 | + {"fchflags", libc_fchflags_trampoline}, |
| 131 | + {"fchmod", libc_fchmod_trampoline}, |
| 132 | + {"fchmodat", libc_fchmodat_trampoline}, |
| 133 | + {"fchown", libc_fchown_trampoline}, |
| 134 | + {"fchownat", libc_fchownat_trampoline}, |
| 135 | + {"flock", libc_flock_trampoline}, |
| 136 | + {"fpathconf", libc_fpathconf_trampoline}, |
| 137 | + {"fstat64", libc_fstat64_trampoline}, |
| 138 | + {"fstatat64", libc_fstatat64_trampoline}, |
| 139 | + {"fstatfs64", libc_fstatfs64_trampoline}, |
| 140 | + {"fsync", libc_fsync_trampoline}, |
| 141 | + {"ftruncate", libc_ftruncate_trampoline}, |
| 142 | + {"__getdirentries64", libc___getdirentries64_trampoline}, |
| 143 | + {"getdtablesize", libc_getdtablesize_trampoline}, |
| 144 | + {"getegid", libc_getegid_trampoline}, |
| 145 | + {"geteuid", libc_geteuid_trampoline}, |
| 146 | + {"getgid", libc_getgid_trampoline}, |
| 147 | + {"getpgid", libc_getpgid_trampoline}, |
| 148 | + {"getpgrp", libc_getpgrp_trampoline}, |
| 149 | + {"getpid", libc_getpid_trampoline}, |
| 150 | + {"getppid", libc_getppid_trampoline}, |
| 151 | + {"getpriority", libc_getpriority_trampoline}, |
| 152 | + {"getrlimit", libc_getrlimit_trampoline}, |
| 153 | + {"getrusage", libc_getrusage_trampoline}, |
| 154 | + {"getsid", libc_getsid_trampoline}, |
| 155 | + {"getuid", libc_getuid_trampoline}, |
| 156 | + {"issetugid", libc_issetugid_trampoline}, |
| 157 | + {"kqueue", libc_kqueue_trampoline}, |
| 158 | + {"lchown", libc_lchown_trampoline}, |
| 159 | + {"link", libc_link_trampoline}, |
| 160 | + {"linkat", libc_linkat_trampoline}, |
| 161 | + {"listen", libc_listen_trampoline}, |
| 162 | + {"lstat64", libc_lstat64_trampoline}, |
| 163 | + {"mkdir", libc_mkdir_trampoline}, |
| 164 | + {"mkdirat", libc_mkdirat_trampoline}, |
| 165 | + {"mkfifo", libc_mkfifo_trampoline}, |
| 166 | + {"mknod", libc_mknod_trampoline}, |
| 167 | + {"open", libc_open_trampoline}, |
| 168 | + {"openat", libc_openat_trampoline}, |
| 169 | + {"pathconf", libc_pathconf_trampoline}, |
| 170 | + {"pread", libc_pread_trampoline}, |
| 171 | + {"pwrite", libc_pwrite_trampoline}, |
| 172 | + {"read", libc_read_trampoline}, |
| 173 | + {"readlink", libc_readlink_trampoline}, |
| 174 | + {"readlinkat", libc_readlinkat_trampoline}, |
| 175 | + {"rename", libc_rename_trampoline}, |
| 176 | + {"renameat", libc_renameat_trampoline}, |
| 177 | + {"revoke", libc_revoke_trampoline}, |
| 178 | + {"rmdir", libc_rmdir_trampoline}, |
| 179 | + {"lseek", libc_lseek_trampoline}, |
| 180 | + {"select", libc_select_trampoline}, |
| 181 | + {"setegid", libc_setegid_trampoline}, |
| 182 | + {"seteuid", libc_seteuid_trampoline}, |
| 183 | + {"setgid", libc_setgid_trampoline}, |
| 184 | + {"setlogin", libc_setlogin_trampoline}, |
| 185 | + {"setpgid", libc_setpgid_trampoline}, |
| 186 | + {"setpriority", libc_setpriority_trampoline}, |
| 187 | + {"setprivexec", libc_setprivexec_trampoline}, |
| 188 | + {"setregid", libc_setregid_trampoline}, |
| 189 | + {"setreuid", libc_setreuid_trampoline}, |
| 190 | + {"setrlimit", libc_setrlimit_trampoline}, |
| 191 | + {"setsid", libc_setsid_trampoline}, |
| 192 | + {"settimeofday", libc_settimeofday_trampoline}, |
| 193 | + {"setuid", libc_setuid_trampoline}, |
| 194 | + {"stat64", libc_stat64_trampoline}, |
| 195 | + {"statfs64", libc_statfs64_trampoline}, |
| 196 | + {"symlink", libc_symlink_trampoline}, |
| 197 | + {"symlinkat", libc_symlinkat_trampoline}, |
| 198 | + {"sync", libc_sync_trampoline}, |
| 199 | + {"truncate", libc_truncate_trampoline}, |
| 200 | + {"umask", libc_umask_trampoline}, |
| 201 | + {"undelete", libc_undelete_trampoline}, |
| 202 | + {"unlink", libc_unlink_trampoline}, |
| 203 | + {"unlinkat", libc_unlinkat_trampoline}, |
| 204 | + {"unmount", libc_unmount_trampoline}, |
| 205 | + {"write", libc_write_trampoline}, |
| 206 | + {"mmap", libc_mmap_trampoline}, |
| 207 | + {"munmap", libc_munmap_trampoline}, |
| 208 | + {"gettimeofday", libc_gettimeofday_trampoline}, |
| 209 | +} |
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