mirrors/pspy
1
0
Fork 0
mirror of https://github.com/DominicBreuker/pspy.git synced 2025-12-21 11:44:51 +00:00
Code Issues Packages Projects Releases Wiki Activity

refactor inotify implementation

Browse Source
This commit is contained in:
Dominic Breuker
2018-02-26 09:29:06 +01:00
committed by Dominic Breuker
parent 2750defb63
commit 94a12cf031
9 changed files with 154 additions and 235 deletions
Download Patch File Download Diff File Expand all files Collapse all files

65
internal/fswatcher/event.go
View File

@@ -1,75 +1,22 @@
package fswatcher
import (
"bytes"
"fmt"
"strconv"
"unsafe"
"github.com/dominicbreuker/pspy/internal/fswatcher/inotify"
"golang.org/x/sys/unix"
)
var InotifyEvents = map[uint32]string{
unix.IN_ACCESS: "ACCESS",
unix.IN_ATTRIB: "ATTRIB",
unix.IN_CLOSE_NOWRITE: "CLOSE_NOWRITE",
unix.IN_CLOSE_WRITE: "CLOSE_WRITE",
unix.IN_CREATE: "CREATE",
unix.IN_DELETE: "DELETE",
unix.IN_DELETE_SELF: "DELETE_SELF",
unix.IN_MODIFY: "MODIFY",
unix.IN_MOVED_FROM: "MOVED_FROM",
unix.IN_MOVED_TO: "MOVED_TO",
unix.IN_MOVE_SELF: "MOVE_SELF",
unix.IN_OPEN: "OPEN",
(unix.IN_ACCESS | unix.IN_ISDIR): "ACCESS DIR",
(unix.IN_ATTRIB | unix.IN_ISDIR): "ATTRIB DIR",
(unix.IN_CLOSE_NOWRITE | unix.IN_ISDIR): "CLOSE_NOWRITE DIR",
(unix.IN_CLOSE_WRITE | unix.IN_ISDIR): "CLOSE_WRITE DIR",
(unix.IN_CREATE | unix.IN_ISDIR): "CREATE DIR",
(unix.IN_DELETE | unix.IN_ISDIR): "DELETE DIR",
(unix.IN_DELETE_SELF | unix.IN_ISDIR): "DELETE_SELF DIR",
(unix.IN_MODIFY | unix.IN_ISDIR): "MODIFY DIR",
(unix.IN_MOVED_FROM | unix.IN_ISDIR): "MOVED_FROM DIR",
(unix.IN_MOVE_SELF | unix.IN_ISDIR): "MODE_SELF DIR",
(unix.IN_OPEN | unix.IN_ISDIR): "OPEN DIR",
}
func parseEvents(i *inotify.Inotify, dataCh chan []byte, eventCh chan string, errCh chan error) {
for buf := range dataCh {
n := len(buf)
if n < unix.SizeofInotifyEvent {
errCh <- fmt.Errorf("Inotify event parser: incomplete read: n=%d", n)
continue
}
var ptr uint32
var name string
for ptr <= uint32(n-unix.SizeofInotifyEvent) {
sys := (*unix.InotifyEvent)(unsafe.Pointer(&buf[ptr]))
ptr += unix.SizeofInotifyEvent
watcher, ok := i.Watchers[int(sys.Wd)]
if !ok {
errCh <- fmt.Errorf("Inotify event parser: unknown watcher ID: %d", sys.Wd)
for len(buf[ptr:]) > 0 {
event, size, err := i.ParseNextEvent(buf[ptr:])
if err != nil {
errCh <- fmt.Errorf("parsing events: %v", err)
continue
}
name = watcher.Dir + "/"
if sys.Len > 0 && len(buf) >= int(ptr+sys.Len) {
name += string(bytes.TrimRight(buf[ptr:ptr+sys.Len], "\x00"))
ptr += sys.Len
}
eventCh <- formatEvent(name, sys.Mask)
ptr += size
eventCh <- fmt.Sprintf("%20s | %s", event.Op, event.Name)
}
}
}
func formatEvent(name string, mask uint32) string {
op, ok := InotifyEvents[mask]
if !ok {
op = strconv.FormatInt(int64(mask), 2)
}
return fmt.Sprintf("%20s | %s", op, name)
}