From 557540856051c2396dac7c70be77f37ad5baf0cc Mon Sep 17 00:00:00 2001 From: "Alexander \"Arav\" Andreev" Date: Sat, 20 Apr 2024 18:25:04 +0400 Subject: [PATCH] Remove unused inode watcher. --- pkg/watcher/linux.go | 85 -------------------------------------------- 1 file changed, 85 deletions(-) delete mode 100644 pkg/watcher/linux.go diff --git a/pkg/watcher/linux.go b/pkg/watcher/linux.go deleted file mode 100644 index ce0e02d..0000000 --- a/pkg/watcher/linux.go +++ /dev/null @@ -1,85 +0,0 @@ -package watcher - -import ( - "syscall" - "unsafe" - - "github.com/pkg/errors" -) - -const ( - CrDelMask uint32 = syscall.IN_CREATE | syscall.IN_DELETE - ModIgnMask uint32 = syscall.IN_MODIFY | syscall.IN_IGNORED -) - -const inotifyCount = 16 - -type InotifyWatcher struct { - fd int - wds []int - closed bool -} - -func NewInotifyWatcher() (w *InotifyWatcher, err error) { - w = &InotifyWatcher{closed: false} - - w.fd, err = syscall.InotifyInit() - if err != nil { - return nil, errors.Wrap(err, "failed to initialise inotify watcher") - } - - w.wds = make([]int, 0) - - return w, nil -} - -func (w *InotifyWatcher) AddWatch(path string, mask uint32) error { - wd, err := syscall.InotifyAddWatch(w.fd, path, mask) - if err != nil { - return errors.Wrapf(err, "failed to set %s on watch", path) - } - - w.wds = append(w.wds, wd) - - return nil -} - -// WatchForMask checking for events from mask and returns inotify mask to channel. -func (w *InotifyWatcher) WatchForMask(fired chan uint32, mask uint32) { - go func() { - for !w.closed { - buffer := make([]byte, syscall.SizeofInotifyEvent*inotifyCount) - n, err := syscall.Read(w.fd, buffer) - if err != nil { - break - } - - if n < syscall.SizeofInotifyEvent { - continue - } - - for offset := 0; offset < len(buffer); offset += syscall.SizeofInotifyEvent { - event := (*syscall.InotifyEvent)(unsafe.Pointer(&buffer[offset])) - if event.Mask&mask > 0 { - fired <- event.Mask - } - } - } - }() -} - -func (w *InotifyWatcher) Close() error { - for _, wd := range w.wds { - if _, err := syscall.InotifyRmWatch(w.fd, uint32(wd)); err != nil { - return err - } - } - - if err := syscall.Close(w.fd); err != nil { - return err - } - - w.closed = true - - return nil -}