I got a report that profile locking stuff doesn't work as expected if the
profile is located on a FAT partition (this is the Linux version).
According to the report it works with plain Firefox 1.0.x but it doesn't work
with 1.5b2 (and it doesn't work with the SUSE version of 1.0.x (because the
profile locking change is backported there)
This is most likely a regression from bug #151188
the profile is always reported as being in use
I'm pretty sure that FF1.5 won't block on this... I should be able to fix this
ROC, what would be involved in fixing this and what kind of risk do you think that would introduce?
Too late in the game for something this edge case to block our release (code complete tonight.)
Created attachment 200783 [details] [diff] [review]
The problem is that you can't create a symlink in a FAT partition. Symlink creation fails and then we bail out of profile locking with an error. This worked before the fix to bug 151188 because if symlink creation failed with other than EEXIST, we'd fall back to fcntl locking, which DOES work in FAT. Bug 151188 made fcntl happen first and also made symlink failure fatal, which was unintentional.
This patch reverts to something like the previous behaviour. We allow execution to proceed if symlink creation fails for any reason other than the symlink already exists --- the net effect is as before bug 151188 was fixed, we will hold an fcntl lock and not the symlink lock. This patch is thus as safe as the old locking code ever was, and will continue to lock out FF1.0 builds (unless some transient non-EEXIST fault occurs, which would have doomed the FF1.0 locking code anyway).
Comment on attachment 200783 [details] [diff] [review]
This is safe for 1.8, because it suppresses an error returned by LockWithSymlink only if the symlink did not exist. In which case, we should suppress the error and get on with new-style locking, because there's no symlink and we couldn't make one.
The failure on Linux FAT partitions is caused by assuming symlink failure other than EEXIST should lead to failure to set the profile directory. Roc's patch fixes this by making any error other than EEXIST turn into NS_OK and get on with using the profile. This is after having taken an fcntl (new-style) lock, so the profile is locked against access by other processes.
There is zero risk to Mac and Windows because the patch affects #elif defined(XP_UNIX) code. The file is small enough, and static is used, that code review plus testing should suffice for getting this into 1.8/fx1.5. I think we should take it.
(In reply to comment #6)
> (From update of attachment 200783 [details] [diff] [review] )
> This is safe for 1.8, because it suppresses an error returned by
> LockWithSymlink only if the symlink did not exist. In which case, we should
> suppress the error and get on with
using the already-acquired [I meant to write; or something simpler]
> new-style locking, because there's no
> symlink and we couldn't make one.
Again, this is Linux only, and the new-style lock as been successfully acquired so we are only suppressing failure to get an old (Firefox 1.0.x) style symlink lock, and only in the case where the symlink doesn't exist (so there can't be another downrev Firefox process running).
checked into trunk
IMHO this is not a stop-ship fix. However, if a window opens for patches to be landed, I'd like to land this one.
Agreed, it isn't stop ship.
Is the FAT32-based profile for dual booting? Most profile data is OS-independent, and byte order is either canonical or same on the same machine when dual-booting Windows and Linux.
This is a followup fix to a notable fix to bug 151188 for Firefox 1.5. While we have time to polish, my quality sense says to do so with provably safe patches. Proof is just a convincing argument; code review may be less convincing than a day or two baking in the trunk.
not going to lose a day with this but could become a ride-along if we're forced to respin by some other bug.
*** Bug 309645 has been marked as a duplicate of this bug. ***
indeed, this is nothing that will cause another bug. Or if you want, include it before a RC2.
Could this fix be causing bug 314180?
(In reply to comment #15)
> Could this fix be causing bug 314180?
No, that report is not against the trunk (see the rv: and Gecko/build-date in bug 314180 comment 0). It's a dup of this bug.
*** Bug 314180 has been marked as a duplicate of this bug. ***
*** Bug 314522 has been marked as a duplicate of this bug. ***
moving out to the rc2 ride-along list in case we spin an rc2 we can evaluate this for that release.
fixed on branch. Thanks.
flag clean up, nothing to see here.
*** Bug 318024 has been marked as a duplicate of this bug. ***
This same problem also effects Firefox and SMB-mounted network home dirs with:
OS: Mac OS x v10.3.x and v10.4.x
Browser: v1.0.7+ (possibly earlier)
This is also reported in bug #309323. This bug is marked as fixed, and yet I am still having this problem.
Versions of Firefox up to and including v1.5 do not work with profile's stored on SMB-mounted network home dirs under Mac OS X. They are either failing to find them, or incorrectly determining that they are in use.
1. Launch Firefox.
Launch with firefox -P, else in v1.5 we immediately get the error message below, and have to chance to monkey with the profile placement.
2. Select profile.
Use default or create a new profile (in FF's default location), doesn't matter.
3. Get following message:
"Profile in use Firefox cannot use the profile "default" because it is in use.
To continue, close the running instance of Firefox or choose a different profile."
Firefox is already running, but is not responding. To open a new window, you must close the existing Firefox process or restart your system."
I have verified that the appropriate files are being created in ~/Library/Application Support/Firefox when Firefox is launched (else there wouldn't be a 'default' profile to select). This of course means the user has privleges to write in this location.
However, if instead of choosing a dir in ~, you select a local dir (non-SMB mounted), all is well.
Forgot to state that I tested this issue and it still occurs on this build:
Mozilla/5.0 (Macintosh; U; PPC Mac OS X Mach-O; en-US; rv:18.104.22.168) Gecko/20060131 Firefox/22.214.171.124
If it's 'FIXED'/'RESOLVED', why is it still happening in this build, or am I missing something?
Created attachment 210328 [details]
Text output of running ktrace on Mozilla/5.0 (Macintosh; U; PPC Mac OS X Mach-O; en-US; rv:126.96.36.199) Gecko/20060131 Firefox/188.8.131.52
Here is a ktrace of running "Mozilla/5.0 (Macintosh; U; PPC Mac OS X Mach-O; en-US; rv:184.108.40.206) Gecko/20060131 Firefox/220.127.116.11" and it giving me the profile in use message.
This is REALLY driving me nuts. It's holding up our diskless Mac deployment, and my boss is screaming. :-((
(In reply to comment #24)
> If it's 'FIXED'/'RESOLVED', why is it still happening in this build, or am I
> missing something?
You are reporting a problem when the profile directory is on an SMB-mounted remote filesystem. That's not what this bug is about -- a FAT partition is a local disk filesystem. This bug is fixed. You want bug 309323.