diff options
Diffstat (limited to 'vendor/golang.org/x/sys/unix/syscall_solaris.go')
| -rw-r--r-- | vendor/golang.org/x/sys/unix/syscall_solaris.go | 294 |
1 files changed, 276 insertions, 18 deletions
diff --git a/vendor/golang.org/x/sys/unix/syscall_solaris.go b/vendor/golang.org/x/sys/unix/syscall_solaris.go index 0e2a696..5c81392 100644 --- a/vendor/golang.org/x/sys/unix/syscall_solaris.go +++ b/vendor/golang.org/x/sys/unix/syscall_solaris.go @@ -13,6 +13,10 @@ package unix import ( + "fmt" + "os" + "runtime" + "sync" "syscall" "unsafe" ) @@ -62,11 +66,28 @@ func Pipe(p []int) (err error) { if n != 0 { return err } - p[0] = int(pp[0]) - p[1] = int(pp[1]) + if err == nil { + p[0] = int(pp[0]) + p[1] = int(pp[1]) + } return nil } +//sysnb pipe2(p *[2]_C_int, flags int) (err error) + +func Pipe2(p []int, flags int) error { + if len(p) != 2 { + return EINVAL + } + var pp [2]_C_int + err := pipe2(&pp, flags) + if err == nil { + p[0] = int(pp[0]) + p[1] = int(pp[1]) + } + return err +} + func (sa *SockaddrInet4) sockaddr() (unsafe.Pointer, _Socklen, error) { if sa.Port < 0 || sa.Port > 0xFFFF { return nil, 0, EINVAL @@ -75,9 +96,7 @@ func (sa *SockaddrInet4) sockaddr() (unsafe.Pointer, _Socklen, error) { p := (*[2]byte)(unsafe.Pointer(&sa.raw.Port)) p[0] = byte(sa.Port >> 8) p[1] = byte(sa.Port) - for i := 0; i < len(sa.Addr); i++ { - sa.raw.Addr[i] = sa.Addr[i] - } + sa.raw.Addr = sa.Addr return unsafe.Pointer(&sa.raw), SizeofSockaddrInet4, nil } @@ -90,9 +109,7 @@ func (sa *SockaddrInet6) sockaddr() (unsafe.Pointer, _Socklen, error) { p[0] = byte(sa.Port >> 8) p[1] = byte(sa.Port) sa.raw.Scope_id = sa.ZoneId - for i := 0; i < len(sa.Addr); i++ { - sa.raw.Addr[i] = sa.Addr[i] - } + sa.raw.Addr = sa.Addr return unsafe.Pointer(&sa.raw), SizeofSockaddrInet6, nil } @@ -400,9 +417,7 @@ func anyToSockaddr(fd int, rsa *RawSockaddrAny) (Sockaddr, error) { sa := new(SockaddrInet4) p := (*[2]byte)(unsafe.Pointer(&pp.Port)) sa.Port = int(p[0])<<8 + int(p[1]) - for i := 0; i < len(sa.Addr); i++ { - sa.Addr[i] = pp.Addr[i] - } + sa.Addr = pp.Addr return sa, nil case AF_INET6: @@ -411,9 +426,7 @@ func anyToSockaddr(fd int, rsa *RawSockaddrAny) (Sockaddr, error) { p := (*[2]byte)(unsafe.Pointer(&pp.Port)) sa.Port = int(p[0])<<8 + int(p[1]) sa.ZoneId = pp.Scope_id - for i := 0; i < len(sa.Addr); i++ { - sa.Addr[i] = pp.Addr[i] - } + sa.Addr = pp.Addr return sa, nil } return nil, EAFNOSUPPORT @@ -551,10 +564,17 @@ func Minor(dev uint64) uint32 { * Expose the ioctl function */ -//sys ioctl(fd int, req uint, arg uintptr) (err error) +//sys ioctlRet(fd int, req uint, arg uintptr) (ret int, err error) = libc.ioctl -func IoctlSetTermio(fd int, req uint, value *Termio) (err error) { - return ioctl(fd, req, uintptr(unsafe.Pointer(value))) +func ioctl(fd int, req uint, arg uintptr) (err error) { + _, err = ioctlRet(fd, req, arg) + return err +} + +func IoctlSetTermio(fd int, req uint, value *Termio) error { + err := ioctl(fd, req, uintptr(unsafe.Pointer(value))) + runtime.KeepAlive(value) + return err } func IoctlGetTermio(fd int, req uint) (*Termio, error) { @@ -563,7 +583,7 @@ func IoctlGetTermio(fd int, req uint) (*Termio, error) { return &value, err } -//sys poll(fds *PollFd, nfds int, timeout int) (n int, err error) +//sys poll(fds *PollFd, nfds int, timeout int) (n int, err error) func Poll(fds []PollFd, timeout int) (n int, err error) { if len(fds) == 0 { @@ -666,6 +686,7 @@ func Sendfile(outfd int, infd int, offset *int64, count int) (written int, err e //sys Statvfs(path string, vfsstat *Statvfs_t) (err error) //sys Symlink(path string, link string) (err error) //sys Sync() (err error) +//sys Sysconf(which int) (n int64, err error) //sysnb Times(tms *Tms) (ticks uintptr, err error) //sys Truncate(path string, length int64) (err error) //sys Fsync(fd int) (err error) @@ -722,3 +743,240 @@ func Mmap(fd int, offset int64, length int, prot int, flags int) (data []byte, e func Munmap(b []byte) (err error) { return mapper.Munmap(b) } + +// Event Ports + +type fileObjCookie struct { + fobj *fileObj + cookie interface{} +} + +// EventPort provides a safe abstraction on top of Solaris/illumos Event Ports. +type EventPort struct { + port int + mu sync.Mutex + fds map[uintptr]interface{} + paths map[string]*fileObjCookie +} + +// PortEvent is an abstraction of the port_event C struct. +// Compare Source against PORT_SOURCE_FILE or PORT_SOURCE_FD +// to see if Path or Fd was the event source. The other will be +// uninitialized. +type PortEvent struct { + Cookie interface{} + Events int32 + Fd uintptr + Path string + Source uint16 + fobj *fileObj +} + +// NewEventPort creates a new EventPort including the +// underlying call to port_create(3c). +func NewEventPort() (*EventPort, error) { + port, err := port_create() + if err != nil { + return nil, err + } + e := &EventPort{ + port: port, + fds: make(map[uintptr]interface{}), + paths: make(map[string]*fileObjCookie), + } + return e, nil +} + +//sys port_create() (n int, err error) +//sys port_associate(port int, source int, object uintptr, events int, user *byte) (n int, err error) +//sys port_dissociate(port int, source int, object uintptr) (n int, err error) +//sys port_get(port int, pe *portEvent, timeout *Timespec) (n int, err error) +//sys port_getn(port int, pe *portEvent, max uint32, nget *uint32, timeout *Timespec) (n int, err error) + +// Close closes the event port. +func (e *EventPort) Close() error { + e.mu.Lock() + defer e.mu.Unlock() + e.fds = nil + e.paths = nil + return Close(e.port) +} + +// PathIsWatched checks to see if path is associated with this EventPort. +func (e *EventPort) PathIsWatched(path string) bool { + e.mu.Lock() + defer e.mu.Unlock() + _, found := e.paths[path] + return found +} + +// FdIsWatched checks to see if fd is associated with this EventPort. +func (e *EventPort) FdIsWatched(fd uintptr) bool { + e.mu.Lock() + defer e.mu.Unlock() + _, found := e.fds[fd] + return found +} + +// AssociatePath wraps port_associate(3c) for a filesystem path including +// creating the necessary file_obj from the provided stat information. +func (e *EventPort) AssociatePath(path string, stat os.FileInfo, events int, cookie interface{}) error { + e.mu.Lock() + defer e.mu.Unlock() + if _, found := e.paths[path]; found { + return fmt.Errorf("%v is already associated with this Event Port", path) + } + fobj, err := createFileObj(path, stat) + if err != nil { + return err + } + fCookie := &fileObjCookie{fobj, cookie} + _, err = port_associate(e.port, PORT_SOURCE_FILE, uintptr(unsafe.Pointer(fobj)), events, (*byte)(unsafe.Pointer(&fCookie.cookie))) + if err != nil { + return err + } + e.paths[path] = fCookie + return nil +} + +// DissociatePath wraps port_dissociate(3c) for a filesystem path. +func (e *EventPort) DissociatePath(path string) error { + e.mu.Lock() + defer e.mu.Unlock() + f, ok := e.paths[path] + if !ok { + return fmt.Errorf("%v is not associated with this Event Port", path) + } + _, err := port_dissociate(e.port, PORT_SOURCE_FILE, uintptr(unsafe.Pointer(f.fobj))) + if err != nil { + return err + } + delete(e.paths, path) + return nil +} + +// AssociateFd wraps calls to port_associate(3c) on file descriptors. +func (e *EventPort) AssociateFd(fd uintptr, events int, cookie interface{}) error { + e.mu.Lock() + defer e.mu.Unlock() + if _, found := e.fds[fd]; found { + return fmt.Errorf("%v is already associated with this Event Port", fd) + } + pcookie := &cookie + _, err := port_associate(e.port, PORT_SOURCE_FD, fd, events, (*byte)(unsafe.Pointer(pcookie))) + if err != nil { + return err + } + e.fds[fd] = pcookie + return nil +} + +// DissociateFd wraps calls to port_dissociate(3c) on file descriptors. +func (e *EventPort) DissociateFd(fd uintptr) error { + e.mu.Lock() + defer e.mu.Unlock() + _, ok := e.fds[fd] + if !ok { + return fmt.Errorf("%v is not associated with this Event Port", fd) + } + _, err := port_dissociate(e.port, PORT_SOURCE_FD, fd) + if err != nil { + return err + } + delete(e.fds, fd) + return nil +} + +func createFileObj(name string, stat os.FileInfo) (*fileObj, error) { + fobj := new(fileObj) + bs, err := ByteSliceFromString(name) + if err != nil { + return nil, err + } + fobj.Name = (*int8)(unsafe.Pointer(&bs[0])) + s := stat.Sys().(*syscall.Stat_t) + fobj.Atim.Sec = s.Atim.Sec + fobj.Atim.Nsec = s.Atim.Nsec + fobj.Mtim.Sec = s.Mtim.Sec + fobj.Mtim.Nsec = s.Mtim.Nsec + fobj.Ctim.Sec = s.Ctim.Sec + fobj.Ctim.Nsec = s.Ctim.Nsec + return fobj, nil +} + +// GetOne wraps port_get(3c) and returns a single PortEvent. +func (e *EventPort) GetOne(t *Timespec) (*PortEvent, error) { + pe := new(portEvent) + _, err := port_get(e.port, pe, t) + if err != nil { + return nil, err + } + p := new(PortEvent) + p.Events = pe.Events + p.Source = pe.Source + e.mu.Lock() + defer e.mu.Unlock() + switch pe.Source { + case PORT_SOURCE_FD: + p.Fd = uintptr(pe.Object) + cookie := (*interface{})(unsafe.Pointer(pe.User)) + p.Cookie = *cookie + delete(e.fds, p.Fd) + case PORT_SOURCE_FILE: + p.fobj = (*fileObj)(unsafe.Pointer(uintptr(pe.Object))) + p.Path = BytePtrToString((*byte)(unsafe.Pointer(p.fobj.Name))) + cookie := (*interface{})(unsafe.Pointer(pe.User)) + p.Cookie = *cookie + delete(e.paths, p.Path) + } + return p, nil +} + +// Pending wraps port_getn(3c) and returns how many events are pending. +func (e *EventPort) Pending() (int, error) { + var n uint32 = 0 + _, err := port_getn(e.port, nil, 0, &n, nil) + return int(n), err +} + +// Get wraps port_getn(3c) and fills a slice of PortEvent. +// It will block until either min events have been received +// or the timeout has been exceeded. It will return how many +// events were actually received along with any error information. +func (e *EventPort) Get(s []PortEvent, min int, timeout *Timespec) (int, error) { + if min == 0 { + return 0, fmt.Errorf("need to request at least one event or use Pending() instead") + } + if len(s) < min { + return 0, fmt.Errorf("len(s) (%d) is less than min events requested (%d)", len(s), min) + } + got := uint32(min) + max := uint32(len(s)) + var err error + ps := make([]portEvent, max, max) + _, err = port_getn(e.port, &ps[0], max, &got, timeout) + // got will be trustworthy with ETIME, but not any other error. + if err != nil && err != ETIME { + return 0, err + } + e.mu.Lock() + defer e.mu.Unlock() + for i := 0; i < int(got); i++ { + s[i].Events = ps[i].Events + s[i].Source = ps[i].Source + switch ps[i].Source { + case PORT_SOURCE_FD: + s[i].Fd = uintptr(ps[i].Object) + cookie := (*interface{})(unsafe.Pointer(ps[i].User)) + s[i].Cookie = *cookie + delete(e.fds, s[i].Fd) + case PORT_SOURCE_FILE: + s[i].fobj = (*fileObj)(unsafe.Pointer(uintptr(ps[i].Object))) + s[i].Path = BytePtrToString((*byte)(unsafe.Pointer(s[i].fobj.Name))) + cookie := (*interface{})(unsafe.Pointer(ps[i].User)) + s[i].Cookie = *cookie + delete(e.paths, s[i].Path) + } + } + return int(got), err +} |