View Issue Details
| ID | Project | Category | View Status | Date Submitted | Last Update |
|---|---|---|---|---|---|
| 0007020 | Scribus | Internal | public | 2008-05-11 17:02 | 2008-05-11 17:02 |
| Reporter | Assigned To | ||||
| Priority | none | Severity | feature | Reproducibility | always |
| Status | new | Resolution | open | ||
| Product Version | 1.3.5svn | ||||
| Summary | 0007020: Protect documents against being opened by two different Scribus instances | ||||
| Description | See mailing list discussion 2008-04-28 "Multiple instances of Scribus". A lock file is a BAD idea: - It's an unnecessary file being created and deleted by Scribus in the same location as the original file. If the user has permission to modify the original file but not make new files in that directory, things will explode. - If the Scribus instance doing the editing crashes out, and the document is on a network volume, there is no way to safely detect this. So OS-level mandatory or advisory locking should be used. For example, on win32 open the file in exclusive mode. On linux, see fcntl(), flock(), lockf(), linux/Documentation/mandatory.txt and linux/Documentation/locks.txt . There are still circumstances under which locking on a network won't work. For example, most fuse file systems won't support file locks, NFS doesn't support mandatory locking unless the `mand' mount option is passed (though it does support advisory locking) and SMB may or may not depending on server options. It's still a whole lot better than a lock file. | ||||
| Tags | No tags attached. | ||||
| Patch | |||||
| child of | 0007017 | acknowledged | Metabug: Multiple instance safety / single-instance-per-user support |
|
|
Note that locking will also catch cases of files opened multiple times by a single instance with different paths (say, due to bind mounts or directory symlinks). |
| Date Modified | Username | Field | Change |
|---|---|---|---|
| 2008-05-11 17:02 |
|
New Issue | |
| 2008-05-11 17:02 |
|
Reported by | => 2008-04-28 "Multiple instances of Scribus" |
| 2008-05-11 17:02 |
|
Reported where | => Mailing List |
| 2008-05-11 17:02 |
|
Relationship added | child of 0007017 |
| 2008-05-11 17:02 |
|
Note Added: 0019658 |
