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// Copyright (c) 2014-2015 The Notify Authors. All rights reserved.
// Use of this source code is governed by the MIT license that can be
// found in the LICENSE file.
// +build solaris illumos
package notify
// #include <port.h>
// #include <stdio.h>
// #include <stdlib.h>
// struct file_obj* newFo() { return (struct file_obj*) malloc(sizeof(struct file_obj)); }
// port_event_t* newPe() { return (port_event_t*) malloc(sizeof(port_event_t)); }
// uintptr_t conv(struct file_obj* fo) { return (uintptr_t) fo; }
// struct file_obj* dconv(uintptr_t fo) { return (struct file_obj*) fo; }
import "C"
import (
"syscall"
"unsafe"
)
const (
fileAccess = Event(C.FILE_ACCESS)
fileModified = Event(C.FILE_MODIFIED)
fileAttrib = Event(C.FILE_ATTRIB)
fileDelete = Event(C.FILE_DELETE)
fileRenameTo = Event(C.FILE_RENAME_TO)
fileRenameFrom = Event(C.FILE_RENAME_FROM)
fileTrunc = Event(C.FILE_TRUNC)
fileNoFollow = Event(C.FILE_NOFOLLOW)
unmounted = Event(C.UNMOUNTED)
mountedOver = Event(C.MOUNTEDOVER)
)
// PortEvent is a notify's equivalent of port_event_t.
type PortEvent struct {
PortevEvents int // PortevEvents is an equivalent of portev_events.
PortevSource uint8 // PortevSource is an equivalent of portev_source.
PortevPad uint8 // Portevpad is an equivalent of portev_pad.
PortevObject interface{} // PortevObject is an equivalent of portev_object.
PortevUser uintptr // PortevUser is an equivalent of portev_user.
}
// FileObj is a notify's equivalent of file_obj.
type FileObj struct {
Atim syscall.Timespec // Atim is an equivalent of fo_atime.
Mtim syscall.Timespec // Mtim is an equivalent of fo_mtime.
Ctim syscall.Timespec // Ctim is an equivalent of fo_ctime.
Pad [3]uintptr // Pad is an equivalent of fo_pad.
Name string // Name is an equivalent of fo_name.
}
type cfen struct {
p2pe map[string]*C.port_event_t
p2fo map[string]*C.struct_file_obj
}
func newCfen() cfen {
return cfen{
p2pe: make(map[string]*C.port_event_t),
p2fo: make(map[string]*C.struct_file_obj),
}
}
func unix2C(sec int64, nsec int64) (C.time_t, C.long) {
return C.time_t(sec), C.long(nsec)
}
func (c *cfen) portAssociate(p int, fo FileObj, e int) (err error) {
cfo := C.newFo()
cfo.fo_atime.tv_sec, cfo.fo_atime.tv_nsec = unix2C(fo.Atim.Unix())
cfo.fo_mtime.tv_sec, cfo.fo_mtime.tv_nsec = unix2C(fo.Mtim.Unix())
cfo.fo_ctime.tv_sec, cfo.fo_ctime.tv_nsec = unix2C(fo.Ctim.Unix())
cfo.fo_name = C.CString(fo.Name)
c.p2fo[fo.Name] = cfo
_, err = C.port_associate(C.int(p), srcFile, C.conv(cfo), C.int(e), nil)
return
}
func (c *cfen) portDissociate(port int, fo FileObj) (err error) {
cfo, ok := c.p2fo[fo.Name]
if !ok {
return errNotWatched
}
_, err = C.port_dissociate(C.int(port), srcFile, C.conv(cfo))
C.free(unsafe.Pointer(cfo.fo_name))
C.free(unsafe.Pointer(cfo))
delete(c.p2fo, fo.Name)
return
}
const srcAlert = C.PORT_SOURCE_ALERT
const srcFile = C.PORT_SOURCE_FILE
const alertSet = C.PORT_ALERT_SET
func cfo2fo(cfo *C.struct_file_obj) *FileObj {
// Currently remaining attributes are not used.
if cfo == nil {
return nil
}
var fo FileObj
fo.Name = C.GoString(cfo.fo_name)
return &fo
}
func (c *cfen) portGet(port int, pe *PortEvent) (err error) {
cpe := C.newPe()
if _, err = C.port_get(C.int(port), cpe, nil); err != nil {
C.free(unsafe.Pointer(cpe))
return
}
pe.PortevEvents, pe.PortevSource, pe.PortevPad =
int(cpe.portev_events), uint8(cpe.portev_source), uint8(cpe.portev_pad)
pe.PortevObject = cfo2fo(C.dconv(cpe.portev_object))
pe.PortevUser = uintptr(cpe.portev_user)
C.free(unsafe.Pointer(cpe))
return
}
func (c *cfen) portCreate() (int, error) {
p, err := C.port_create()
return int(p), err
}
func (c *cfen) portAlert(p int) (err error) {
_, err = C.port_alert(C.int(p), alertSet, C.int(666), nil)
return
}
func (c *cfen) free() {
for i := range c.p2fo {
C.free(unsafe.Pointer(c.p2fo[i].fo_name))
C.free(unsafe.Pointer(c.p2fo[i]))
}
for i := range c.p2pe {
C.free(unsafe.Pointer(c.p2pe[i]))
}
c.p2fo = make(map[string]*C.struct_file_obj)
c.p2pe = make(map[string]*C.port_event_t)
}
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