Re: open()ing a directory without O_DIRECTORY
George Georgalis <[email protected]> Sun, 3 Mar 2019 12:28:12 -0800
| Newsgroups | gmane.os.netbsd.devel.security |
|---|---|
| Message-ID | <CAHK3FNyWv-fHoer6GsOG2j6YDn1ft5gioz6mG+GfbUYvk2rFCQ@mail.gmail.com> |
On Sun, Mar 3, 2019 at 11:57 AM Christos Zoulas <[email protected]> wrote: > > On Mar 3, 2019, at 2:49 PM, George Georgalis <[email protected]> wrote: > If a sysctl is added to overwrite (file/directory) data on delete, I would > suggest at least 3 settings, 1) none, 2) background, low priority > overwrite, 3) atomic blocking, ie the rm command doesn't return until > successful overwrite completes. > > I don't think it is going to be expensive to zero the directory entry on > delete. We are not talking about the data (only the metadata). > Oh I thought the conversation had expanded to over writing old file data too, which would seem a grater value add than the dirent overwrite. -- George Georgalis, (415) 894-2710, http://www.galis.org/