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Fix inotify based directory watcher for recursive directory adds.

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Newly added folders were not scanned recursively, which would result in sub folders that already exist or are added concurrently to not be watched.
This commit is contained in:
Sönke Ludwig 2017-12-02 02:54:13 +01:00 committed by Leonid Kramer
parent 29aee9ee52
commit 9ca1a4c3a6
1 changed files with 30 additions and 15 deletions
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45
source/eventcore/drivers/posix/watchers.d
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@ -42,20 +42,8 @@ final class InotifyEventDriverWatchers(Events : EventDriverEvents) : EventDriver
m_watches[ret] = WatchState(null, path, recursive);
addWatch(ret, path, "");
if (recursive) {
try {
auto base_segements = path.pathSplitter.walkLength;
if (path.isDir) () @trusted {
foreach (de; path.dirEntries(SpanMode.depth))
if (de.isDir) {
auto subdir = de.name.pathSplitter.drop(base_segements).buildPath;
addWatch(ret, path, subdir);
}
} ();
} catch (Exception e) {
// TODO: decide if this should be ignored or if the error should be forwarded
}
}
if (recursive)
addSubWatches(ret, path, "");
m_loop.initFD(FD(handle), FDFlags.none);
m_loop.registerFD(FD(handle), EventMask.read);
@ -135,10 +123,14 @@ final class InotifyEventDriverWatchers(Events : EventDriverEvents) : EventDriver
}
auto name = () @trusted { return ev.name.ptr[0 .. strlen(ev.name.ptr)]; } ();
auto subdir = w.watcherPaths[ev.wd];
if (w.recursive && ev.mask & (IN_CREATE|IN_MOVED_TO) && ev.mask & IN_ISDIR) {
addWatch(id, w.basePath, subdir == "" ? name.idup : buildPath(subdir, name));
auto subpath = subdir == "" ? name.idup : buildPath(subdir, name);
addWatch(id, w.basePath, subpath);
if (w.recursive)
addSubWatches(id, w.basePath, subpath);
}
ch.baseDirectory = m_watches[id].basePath;
@ -153,6 +145,29 @@ final class InotifyEventDriverWatchers(Events : EventDriverEvents) : EventDriver
}
}
private bool addSubWatches(WatcherID handle, string base_path, string subpath)
{
import std.path : buildPath, pathSplitter;
import std.range : drop;
import std.range.primitives : walkLength;
try {
auto path = buildPath(base_path, subpath);
auto base_segements = base_path.pathSplitter.walkLength;
if (path.isDir) () @trusted {
foreach (de; path.dirEntries(SpanMode.depth))
if (de.isDir) {
auto subdir = de.name.pathSplitter.drop(base_segements).buildPath;
addWatch(handle, base_path, subdir);
}
} ();
return true;
} catch (Exception e) {
// TODO: decide if this should be ignored or if the error should be forwarded
return false;
}
}
private bool addWatch(WatcherID handle, string base_path, string path)
{
import std.path : buildPath;