| // Copyright 2009,2010 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. |
| |
| // Darwin system calls. |
| // This file is compiled as ordinary Go code, |
| // but it is also input to mksyscall, |
| // which parses the //sys lines and generates system call stubs. |
| // Note that sometimes we use a lowercase //sys name and wrap |
| // it in our own nicer implementation, either here or in |
| // syscall_bsd.go or syscall_unix.go. |
| |
| package syscall |
| |
| import ( |
| errorspkg "errors" |
| "unsafe" |
| ) |
| |
| const ImplementsGetwd = true |
| |
| func Getwd() (string, error) { |
| buf := make([]byte, 2048) |
| attrs, err := getAttrList(".", attrList{CommonAttr: attrCmnFullpath}, buf, 0) |
| if err == nil && len(attrs) == 1 && len(attrs[0]) >= 2 { |
| wd := string(attrs[0]) |
| // Sanity check that it's an absolute path and ends |
| // in a null byte, which we then strip. |
| if wd[0] == '/' && wd[len(wd)-1] == 0 { |
| return wd[:len(wd)-1], nil |
| } |
| } |
| // If pkg/os/getwd.go gets ENOTSUP, it will fall back to the |
| // slow algorithm. |
| return "", ENOTSUP |
| } |
| |
| type SockaddrDatalink struct { |
| Len uint8 |
| Family uint8 |
| Index uint16 |
| Type uint8 |
| Nlen uint8 |
| Alen uint8 |
| Slen uint8 |
| Data [12]int8 |
| raw RawSockaddrDatalink |
| } |
| |
| // Translate "kern.hostname" to []_C_int{0,1,2,3}. |
| func nametomib(name string) (mib []_C_int, err error) { |
| const siz = unsafe.Sizeof(mib[0]) |
| |
| // NOTE(rsc): It seems strange to set the buffer to have |
| // size CTL_MAXNAME+2 but use only CTL_MAXNAME |
| // as the size. I don't know why the +2 is here, but the |
| // kernel uses +2 for its own implementation of this function. |
| // I am scared that if we don't include the +2 here, the kernel |
| // will silently write 2 words farther than we specify |
| // and we'll get memory corruption. |
| var buf [CTL_MAXNAME + 2]_C_int |
| n := uintptr(CTL_MAXNAME) * siz |
| |
| p := (*byte)(unsafe.Pointer(&buf[0])) |
| bytes, err := ByteSliceFromString(name) |
| if err != nil { |
| return nil, err |
| } |
| |
| // Magic sysctl: "setting" 0.3 to a string name |
| // lets you read back the array of integers form. |
| if err = sysctl([]_C_int{0, 3}, p, &n, &bytes[0], uintptr(len(name))); err != nil { |
| return nil, err |
| } |
| return buf[0 : n/siz], nil |
| } |
| |
| // ParseDirent parses up to max directory entries in buf, |
| // appending the names to names. It returns the number |
| // bytes consumed from buf, the number of entries added |
| // to names, and the new names slice. |
| func ParseDirent(buf []byte, max int, names []string) (consumed int, count int, newnames []string) { |
| origlen := len(buf) |
| for max != 0 && len(buf) > 0 { |
| dirent := (*Dirent)(unsafe.Pointer(&buf[0])) |
| if dirent.Reclen == 0 { |
| buf = nil |
| break |
| } |
| buf = buf[dirent.Reclen:] |
| if dirent.Ino == 0 { // File absent in directory. |
| continue |
| } |
| bytes := (*[10000]byte)(unsafe.Pointer(&dirent.Name[0])) |
| var name = string(bytes[0:dirent.Namlen]) |
| if name == "." || name == ".." { // Useless names |
| continue |
| } |
| max-- |
| count++ |
| names = append(names, name) |
| } |
| return origlen - len(buf), count, names |
| } |
| |
| //sys ptrace(request int, pid int, addr uintptr, data uintptr) (err error) |
| func PtraceAttach(pid int) (err error) { return ptrace(PT_ATTACH, pid, 0, 0) } |
| func PtraceDetach(pid int) (err error) { return ptrace(PT_DETACH, pid, 0, 0) } |
| |
| const ( |
| attrBitMapCount = 5 |
| attrCmnFullpath = 0x08000000 |
| ) |
| |
| type attrList struct { |
| bitmapCount uint16 |
| _ uint16 |
| CommonAttr uint32 |
| VolAttr uint32 |
| DirAttr uint32 |
| FileAttr uint32 |
| Forkattr uint32 |
| } |
| |
| func getAttrList(path string, attrList attrList, attrBuf []byte, options uint) (attrs [][]byte, err error) { |
| if len(attrBuf) < 4 { |
| return nil, errorspkg.New("attrBuf too small") |
| } |
| attrList.bitmapCount = attrBitMapCount |
| |
| var _p0 *byte |
| _p0, err = BytePtrFromString(path) |
| if err != nil { |
| return nil, err |
| } |
| |
| _, _, e1 := Syscall6( |
| SYS_GETATTRLIST, |
| uintptr(unsafe.Pointer(_p0)), |
| uintptr(unsafe.Pointer(&attrList)), |
| uintptr(unsafe.Pointer(&attrBuf[0])), |
| uintptr(len(attrBuf)), |
| uintptr(options), |
| 0, |
| ) |
| use(unsafe.Pointer(_p0)) |
| if e1 != 0 { |
| return nil, e1 |
| } |
| size := *(*uint32)(unsafe.Pointer(&attrBuf[0])) |
| |
| // dat is the section of attrBuf that contains valid data, |
| // without the 4 byte length header. All attribute offsets |
| // are relative to dat. |
| dat := attrBuf |
| if int(size) < len(attrBuf) { |
| dat = dat[:size] |
| } |
| dat = dat[4:] // remove length prefix |
| |
| for i := uint32(0); int(i) < len(dat); { |
| header := dat[i:] |
| if len(header) < 8 { |
| return attrs, errorspkg.New("truncated attribute header") |
| } |
| datOff := *(*int32)(unsafe.Pointer(&header[0])) |
| attrLen := *(*uint32)(unsafe.Pointer(&header[4])) |
| if datOff < 0 || uint32(datOff)+attrLen > uint32(len(dat)) { |
| return attrs, errorspkg.New("truncated results; attrBuf too small") |
| } |
| end := uint32(datOff) + attrLen |
| attrs = append(attrs, dat[datOff:end]) |
| i = end |
| if r := i % 4; r != 0 { |
| i += (4 - r) |
| } |
| } |
| return |
| } |
| |
| //sysnb pipe() (r int, w int, err error) |
| |
| func Pipe(p []int) (err error) { |
| if len(p) != 2 { |
| return EINVAL |
| } |
| p[0], p[1], err = pipe() |
| return |
| } |
| |
| func Getfsstat(buf []Statfs_t, flags int) (n int, err error) { |
| var _p0 unsafe.Pointer |
| var bufsize uintptr |
| if len(buf) > 0 { |
| _p0 = unsafe.Pointer(&buf[0]) |
| bufsize = unsafe.Sizeof(Statfs_t{}) * uintptr(len(buf)) |
| } |
| r0, _, e1 := Syscall(SYS_GETFSSTAT64, uintptr(_p0), bufsize, uintptr(flags)) |
| n = int(r0) |
| if e1 != 0 { |
| err = e1 |
| } |
| return |
| } |
| |
| /* |
| * Wrapped |
| */ |
| |
| //sys kill(pid int, signum int, posix int) (err error) |
| |
| func Kill(pid int, signum Signal) (err error) { return kill(pid, int(signum), 1) } |
| |
| /* |
| * Exposed directly |
| */ |
| //sys Access(path string, mode uint32) (err error) |
| //sys Adjtime(delta *Timeval, olddelta *Timeval) (err error) |
| //sys Chdir(path string) (err error) |
| //sys Chflags(path string, flags int) (err error) |
| //sys Chmod(path string, mode uint32) (err error) |
| //sys Chown(path string, uid int, gid int) (err error) |
| //sys Chroot(path string) (err error) |
| //sys Close(fd int) (err error) |
| //sysnb Dup(fd int) (nfd int, err error) |
| //sysnb Dup2(from int, to int) (err error) |
| //sys Exchangedata(path1 string, path2 string, options int) (err error) |
| //sys Exit(code int) |
| //sys Fchdir(fd int) (err error) |
| //sys Fchflags(fd int, flags int) (err error) |
| //sys Fchmod(fd int, mode uint32) (err error) |
| //sys Fchown(fd int, uid int, gid int) (err error) |
| //sys Flock(fd int, how int) (err error) |
| //sys Fpathconf(fd int, name int) (val int, err error) |
| //sys Fstat(fd int, stat *Stat_t) (err error) = SYS_FSTAT64 |
| //sys Fstatfs(fd int, stat *Statfs_t) (err error) = SYS_FSTATFS64 |
| //sys Fsync(fd int) (err error) |
| //sys Ftruncate(fd int, length int64) (err error) |
| //sys Getdirentries(fd int, buf []byte, basep *uintptr) (n int, err error) = SYS_GETDIRENTRIES64 |
| //sys Getdtablesize() (size int) |
| //sysnb Getegid() (egid int) |
| //sysnb Geteuid() (uid int) |
| //sysnb Getgid() (gid int) |
| //sysnb Getpgid(pid int) (pgid int, err error) |
| //sysnb Getpgrp() (pgrp int) |
| //sysnb Getpid() (pid int) |
| //sysnb Getppid() (ppid int) |
| //sys Getpriority(which int, who int) (prio int, err error) |
| //sysnb Getrlimit(which int, lim *Rlimit) (err error) |
| //sysnb Getrusage(who int, rusage *Rusage) (err error) |
| //sysnb Getsid(pid int) (sid int, err error) |
| //sysnb Getuid() (uid int) |
| //sysnb Issetugid() (tainted bool) |
| //sys Kqueue() (fd int, err error) |
| //sys Lchown(path string, uid int, gid int) (err error) |
| //sys Link(path string, link string) (err error) |
| //sys Listen(s int, backlog int) (err error) |
| //sys Lstat(path string, stat *Stat_t) (err error) = SYS_LSTAT64 |
| //sys Mkdir(path string, mode uint32) (err error) |
| //sys Mkfifo(path string, mode uint32) (err error) |
| //sys Mknod(path string, mode uint32, dev int) (err error) |
| //sys Mlock(b []byte) (err error) |
| //sys Mlockall(flags int) (err error) |
| //sys Mprotect(b []byte, prot int) (err error) |
| //sys Munlock(b []byte) (err error) |
| //sys Munlockall() (err error) |
| //sys Open(path string, mode int, perm uint32) (fd int, err error) |
| //sys Pathconf(path string, name int) (val int, err error) |
| //sys Pread(fd int, p []byte, offset int64) (n int, err error) |
| //sys Pwrite(fd int, p []byte, offset int64) (n int, err error) |
| //sys read(fd int, p []byte) (n int, err error) |
| //sys Readlink(path string, buf []byte) (n int, err error) |
| //sys Rename(from string, to string) (err error) |
| //sys Revoke(path string) (err error) |
| //sys Rmdir(path string) (err error) |
| //sys Seek(fd int, offset int64, whence int) (newoffset int64, err error) = SYS_LSEEK |
| //sys Select(n int, r *FdSet, w *FdSet, e *FdSet, timeout *Timeval) (err error) |
| //sys Setegid(egid int) (err error) |
| //sysnb Seteuid(euid int) (err error) |
| //sysnb Setgid(gid int) (err error) |
| //sys Setlogin(name string) (err error) |
| //sysnb Setpgid(pid int, pgid int) (err error) |
| //sys Setpriority(which int, who int, prio int) (err error) |
| //sys Setprivexec(flag int) (err error) |
| //sysnb Setregid(rgid int, egid int) (err error) |
| //sysnb Setreuid(ruid int, euid int) (err error) |
| //sysnb Setrlimit(which int, lim *Rlimit) (err error) |
| //sysnb Setsid() (pid int, err error) |
| //sysnb Settimeofday(tp *Timeval) (err error) |
| //sysnb Setuid(uid int) (err error) |
| //sys Stat(path string, stat *Stat_t) (err error) = SYS_STAT64 |
| //sys Statfs(path string, stat *Statfs_t) (err error) = SYS_STATFS64 |
| //sys Symlink(path string, link string) (err error) |
| //sys Sync() (err error) |
| //sys Truncate(path string, length int64) (err error) |
| //sys Umask(newmask int) (oldmask int) |
| //sys Undelete(path string) (err error) |
| //sys Unlink(path string) (err error) |
| //sys Unmount(path string, flags int) (err error) |
| //sys write(fd int, p []byte) (n int, err error) |
| //sys mmap(addr uintptr, length uintptr, prot int, flag int, fd int, pos int64) (ret uintptr, err error) |
| //sys munmap(addr uintptr, length uintptr) (err error) |
| //sys readlen(fd int, buf *byte, nbuf int) (n int, err error) = SYS_READ |
| //sys writelen(fd int, buf *byte, nbuf int) (n int, err error) = SYS_WRITE |
| |
| /* |
| * Unimplemented |
| */ |
| // Profil |
| // Sigaction |
| // Sigprocmask |
| // Getlogin |
| // Sigpending |
| // Sigaltstack |
| // Ioctl |
| // Reboot |
| // Execve |
| // Vfork |
| // Sbrk |
| // Sstk |
| // Ovadvise |
| // Mincore |
| // Setitimer |
| // Swapon |
| // Select |
| // Sigsuspend |
| // Readv |
| // Writev |
| // Nfssvc |
| // Getfh |
| // Quotactl |
| // Mount |
| // Csops |
| // Waitid |
| // Add_profil |
| // Kdebug_trace |
| // Sigreturn |
| // Mmap |
| // Mlock |
| // Munlock |
| // Atsocket |
| // Kqueue_from_portset_np |
| // Kqueue_portset |
| // Getattrlist |
| // Setattrlist |
| // Getdirentriesattr |
| // Searchfs |
| // Delete |
| // Copyfile |
| // Poll |
| // Watchevent |
| // Waitevent |
| // Modwatch |
| // Getxattr |
| // Fgetxattr |
| // Setxattr |
| // Fsetxattr |
| // Removexattr |
| // Fremovexattr |
| // Listxattr |
| // Flistxattr |
| // Fsctl |
| // Initgroups |
| // Posix_spawn |
| // Nfsclnt |
| // Fhopen |
| // Minherit |
| // Semsys |
| // Msgsys |
| // Shmsys |
| // Semctl |
| // Semget |
| // Semop |
| // Msgctl |
| // Msgget |
| // Msgsnd |
| // Msgrcv |
| // Shmat |
| // Shmctl |
| // Shmdt |
| // Shmget |
| // Shm_open |
| // Shm_unlink |
| // Sem_open |
| // Sem_close |
| // Sem_unlink |
| // Sem_wait |
| // Sem_trywait |
| // Sem_post |
| // Sem_getvalue |
| // Sem_init |
| // Sem_destroy |
| // Open_extended |
| // Umask_extended |
| // Stat_extended |
| // Lstat_extended |
| // Fstat_extended |
| // Chmod_extended |
| // Fchmod_extended |
| // Access_extended |
| // Settid |
| // Gettid |
| // Setsgroups |
| // Getsgroups |
| // Setwgroups |
| // Getwgroups |
| // Mkfifo_extended |
| // Mkdir_extended |
| // Identitysvc |
| // Shared_region_check_np |
| // Shared_region_map_np |
| // __pthread_mutex_destroy |
| // __pthread_mutex_init |
| // __pthread_mutex_lock |
| // __pthread_mutex_trylock |
| // __pthread_mutex_unlock |
| // __pthread_cond_init |
| // __pthread_cond_destroy |
| // __pthread_cond_broadcast |
| // __pthread_cond_signal |
| // Setsid_with_pid |
| // __pthread_cond_timedwait |
| // Aio_fsync |
| // Aio_return |
| // Aio_suspend |
| // Aio_cancel |
| // Aio_error |
| // Aio_read |
| // Aio_write |
| // Lio_listio |
| // __pthread_cond_wait |
| // Iopolicysys |
| // Mlockall |
| // Munlockall |
| // __pthread_kill |
| // __pthread_sigmask |
| // __sigwait |
| // __disable_threadsignal |
| // __pthread_markcancel |
| // __pthread_canceled |
| // __semwait_signal |
| // Proc_info |
| // sendfile |
| // Stat64_extended |
| // Lstat64_extended |
| // Fstat64_extended |
| // __pthread_chdir |
| // __pthread_fchdir |
| // Audit |
| // Auditon |
| // Getauid |
| // Setauid |
| // Getaudit |
| // Setaudit |
| // Getaudit_addr |
| // Setaudit_addr |
| // Auditctl |
| // Bsdthread_create |
| // Bsdthread_terminate |
| // Stack_snapshot |
| // Bsdthread_register |
| // Workq_open |
| // Workq_ops |
| // __mac_execve |
| // __mac_syscall |
| // __mac_get_file |
| // __mac_set_file |
| // __mac_get_link |
| // __mac_set_link |
| // __mac_get_proc |
| // __mac_set_proc |
| // __mac_get_fd |
| // __mac_set_fd |
| // __mac_get_pid |
| // __mac_get_lcid |
| // __mac_get_lctx |
| // __mac_set_lctx |
| // Setlcid |
| // Read_nocancel |
| // Write_nocancel |
| // Open_nocancel |
| // Close_nocancel |
| // Wait4_nocancel |
| // Recvmsg_nocancel |
| // Sendmsg_nocancel |
| // Recvfrom_nocancel |
| // Accept_nocancel |
| // Msync_nocancel |
| // Fcntl_nocancel |
| // Select_nocancel |
| // Fsync_nocancel |
| // Connect_nocancel |
| // Sigsuspend_nocancel |
| // Readv_nocancel |
| // Writev_nocancel |
| // Sendto_nocancel |
| // Pread_nocancel |
| // Pwrite_nocancel |
| // Waitid_nocancel |
| // Poll_nocancel |
| // Msgsnd_nocancel |
| // Msgrcv_nocancel |
| // Sem_wait_nocancel |
| // Aio_suspend_nocancel |
| // __sigwait_nocancel |
| // __semwait_signal_nocancel |
| // __mac_mount |
| // __mac_get_mount |
| // __mac_getfsstat |
