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Fix segfault when moving file when using --monitor (#997)

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* Fix segfault when attempting to perform a comparison on an inotify event when determining if event path is directory or file
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abraunegg 2020-07-22 06:54:35 +10:00 committed by GitHub
parent f6002311cd
commit beb737e903
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1 changed files with 22 additions and 9 deletions
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31
src/monitor.d
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@ -239,6 +239,7 @@ final class Monitor
while (i < length) {
inotify_event *event = cast(inotify_event*) &buffer[i];
string path;
string evalPath;
// inotify event debug
log.vdebug("inotify event wd: ", event.wd);
log.vdebug("inotify event mask: ", event.mask);
@ -280,26 +281,38 @@ final class Monitor
// if the event is not to be ignored, obtain path
path = getPath(event);
// skip events that should be excluded based on application configuration
if (isDir(path)) {
// The path that needs to be checked needs to include the '/'
// configure the skip_dir & skip skip_file comparison item
evalPath = path.strip('.');
// Skip events that should be excluded based on application configuration
// We cant use isDir or isFile as this information is missing from the inotify event itself
// Thus this causes a segfault when attempting to query this - https://github.com/abraunegg/onedrive/issues/995
// Based on the 'type' of event & object type (directory or file) check that path against the 'right' user exclusions
// Directory events should only be compared against skip_dir and file events should only be compared against skip_file
if (event.mask & IN_ISDIR) {
// The event in question contains IN_ISDIR event mask, thus highly likely this is an event on a directory
// This due to if the user has specified in skip_dir an exclusive path: '/path' - that is what must be matched
if (selectiveSync.isDirNameExcluded(path.strip('.'))) {
if (selectiveSync.isDirNameExcluded(evalPath)) {
// The path to evaluate matches a path that the user has configured to skip
goto skip;
}
}
if (isFile(path)) {
// The path that needs to be checked needs to include the '/'
} else {
// The event in question missing the IN_ISDIR event mask, thus highly likely this is an event on a file
// This due to if the user has specified in skip_file an exclusive path: '/path/file' - that is what must be matched
if (selectiveSync.isFileNameExcluded(path.strip('.'))) {
if (selectiveSync.isFileNameExcluded(evalPath)) {
// The path to evaluate matches a file that the user has configured to skip
goto skip;
}
}
// is the path, excluded via sync_list
if (selectiveSync.isPathExcludedViaSyncList(path)) {
// The path to evaluate matches a directory or file that the user has configured not to include in the sync
goto skip;
}
// handle events
// handle the inotify events
if (event.mask & IN_MOVED_FROM) {
log.vdebug("event IN_MOVED_FROM: ", path);
cookieToPath[event.cookie] = path;