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lib/model: Fix rescan detection (fixes #4505, fixes #4506)

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Diff is large due to comment reformatting and indentation but all it
does is wrap the file mtime/size/permissions check in an "if
stat.IsRegular()".

GitHub-Pull-Request: https://github.com/syncthing/syncthing/pull/4507
This commit is contained in:
Jakob Borg 2017-11-13 06:57:07 +00:00
parent 80031c59da
commit 2b65e1062e
1 changed files with 26 additions and 22 deletions
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18
lib/model/rwfolder.go
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@ -1384,17 +1384,20 @@ func (f *sendReceiveFolder) performFinish(state *sharedPullerState) error {
curMode |= 0111
}
// Check that the file on disk is what we expect it to be according to
// the database. If there's a mismatch here, there might be local
// Check that the file on disk is what we expect it to be according
// to the database. If there's a mismatch here, there might be local
// changes that we don't know about yet and we should scan before
// touching the file.
// There is also a case where we think the file should be there, but
// it was removed, which is a conflict, yet creations always wins when
// competing with a deletion, so no need to handle that specially.
// touching the file. There is also a case where we think the file
// should be there, but it was removed, which is a conflict, yet
// creations always wins when competing with a deletion, so no need
// to handle that specially.
if stat.IsRegular() {
switch {
// The file reappeared from nowhere, or mtime/size has changed, fallthrough -> rescan.
// The file reappeared from nowhere or the modification or size
// has changed, rescan.
case !state.hasCurFile || !stat.ModTime().Equal(state.curFile.ModTime()) || stat.Size() != state.curFile.Size:
fallthrough
// Permissions have changed, means the file has changed, rescan.
case !f.ignorePermissions(state.curFile) && state.curFile.HasPermissionBits() && !scanner.PermsEqual(state.curFile.Permissions, curMode):
l.Debugln("file modified but not rescanned; not finishing:", state.curFile.Name)
@ -1408,6 +1411,7 @@ func (f *sendReceiveFolder) performFinish(state *sharedPullerState) error {
go f.Scan([]string{state.curFile.Name})
return fmt.Errorf("file modified but not rescanned; will try again later")
}
}
switch {
case stat.IsDir() || stat.IsSymlink():