Hi.
remove() directory fails on Windows so that vectors cannot be deleted
without error. Patch for lib/vector/Vlib/map.c is attached.
IMPORTANT!
Radim
(attachments)
map.c.patch1 (365 Bytes)
On 9/22/06, Radim Blazek <radim.blazek@gmail.com> wrote:
Hi.
remove() directory fails on Windows so that vectors cannot be deleted
without error. Patch for lib/vector/Vlib/map.c is attached.
IMPORTANT!
Much worse is that a vector open in QGIS cannot be deleted.
Open file on Windows cannot be deleted nor moved.
That is very bad because it is very common to run a module
again and again and watch results on display.
I don't have any idea what could be done.
Radim
On 9/22/06, Radim Blazek <radim.blazek@gmail.com> wrote:
On 9/22/06, Radim Blazek <radim.blazek@gmail.com> wrote:
> Hi.
> remove() directory fails on Windows so that vectors cannot be deleted
> without error. Patch for lib/vector/Vlib/map.c is attached.
> IMPORTANT!Much worse is that a vector open in QGIS cannot be deleted.
Open file on Windows cannot be deleted nor moved.
That is very bad because it is very common to run a module
again and again and watch results on display.
I don't have any idea what could be done.
Output vector is now frozen when a module is started in GRASS tools
and thawn if finished with success. It is not perfect, does not
work from shell.
Radim
Radim
Radim Blazek <radim.blazek <at> gmail.com> writes:
On 9/22/06, Radim Blazek <radim.blazek <at> gmail.com> wrote:
> On 9/22/06, Radim Blazek <radim.blazek <at> gmail.com> wrote:
> > Hi.
> > remove() directory fails on Windows so that vectors cannot be deleted
> > without error. Patch for lib/vector/Vlib/map.c is attached.
> > IMPORTANT!
>
> Much worse is that a vector open in QGIS cannot be deleted.
> Open file on Windows cannot be deleted nor moved.
> That is very bad because it is very common to run a module
> again and again and watch results on display.
> I don't have any idea what could be done.
http://www.mkssoftware.com/docs/man3/remove.3.asp
says that:
Windows NT/2000/XP/2003 does not let you delete a directory if a user has a lock
on it. Any user that is in that directory has a lock on it. All locks to a
directory must be resolved before remove() on a directory can be successful.
There are also indications that the directory should also be empty, from rmdir():
The rmdir() function removes an empty directory whose name is given by pathname.
The directory must not have any entries other than dot (.) and dot-dot (..).
If the directory's link count becomes zero and no process has the directory open
or locked, the directory space is freed and the directory is no longer
accessible. If one or more processes have the directory open or locked (for
example, by having the directory as the current working directory), rmdir()
fails and sets errno to EBUSY.
Is this what is going on here?
Roger
Output vector is now frozen when a module is started in GRASS tools
and thawn if finished with success. It is not perfect, does not
work from shell.Radim
> Radim
>
Roger Bivand wrote:
> > > remove() directory fails on Windows so that vectors cannot be deleted
> > > without error. Patch for lib/vector/Vlib/map.c is attached.
> > > IMPORTANT!
> >
> > Much worse is that a vector open in QGIS cannot be deleted.
> > Open file on Windows cannot be deleted nor moved.
> > That is very bad because it is very common to run a module
> > again and again and watch results on display.
> > I don't have any idea what could be done.
>http://www.mkssoftware.com/docs/man3/remove.3.asp
says that:
Windows NT/2000/XP/2003 does not let you delete a directory if a user has a lock
on it. Any user that is in that directory has a lock on it. All locks to a
directory must be resolved before remove() on a directory can be successful.There are also indications that the directory should also be empty, from rmdir():
The rmdir() function removes an empty directory whose name is given by pathname.
The directory must not have any entries other than dot (.) and dot-dot (..).If the directory's link count becomes zero and no process has the directory open
or locked, the directory space is freed and the directory is no longer
accessible. If one or more processes have the directory open or locked (for
example, by having the directory as the current working directory), rmdir()
fails and sets errno to EBUSY.Is this what is going on here?
AFAICT, in his follow-up, Radim was talking about deleting files.
Unlike Unix, Windows won't let you delete a file which is open in any
process, or a directory which is the current directory for any
process.
On Unix, unlink/rmdir simply remove the entry from the parent
directory. The file/directory isn't actually deleted until no process
is using it.
Anything which relies upon the Unix semantics for unlink/rmdir won't
work on Windows, either natively or using Cygwin. This is one aspect
of Unix which Cygwin doesn't attempt to emulate.
--
Glynn Clements <glynn@gclements.plus.com>
On 9/22/06, Roger Bivand <Roger.Bivand@nhh.no> wrote:
Radim Blazek <radim.blazek <at> gmail.com> writes:
>
> On 9/22/06, Radim Blazek <radim.blazek <at> gmail.com> wrote:
> > On 9/22/06, Radim Blazek <radim.blazek <at> gmail.com> wrote:
> > > Hi.
> > > remove() directory fails on Windows so that vectors cannot be deleted
> > > without error. Patch for lib/vector/Vlib/map.c is attached.
> > > IMPORTANT!
> >
> > Much worse is that a vector open in QGIS cannot be deleted.
> > Open file on Windows cannot be deleted nor moved.
> > That is very bad because it is very common to run a module
> > again and again and watch results on display.
> > I don't have any idea what could be done.
>http://www.mkssoftware.com/docs/man3/remove.3.asp
says that:
Windows NT/2000/XP/2003 does not let you delete a directory if a user has a lock
on it. Any user that is in that directory has a lock on it. All locks to a
directory must be resolved before remove() on a directory can be successful.There are also indications that the directory should also be empty, from rmdir():
The rmdir() function removes an empty directory whose name is given by pathname.
The directory must not have any entries other than dot (.) and dot-dot (..).If the directory's link count becomes zero and no process has the directory open
or locked, the directory space is freed and the directory is no longer
accessible. If one or more processes have the directory open or locked (for
example, by having the directory as the current working directory), rmdir()
fails and sets errno to EBUSY.Is this what is going on here?
No, dir is empty, no process has it as current and rmdir() works
but remove() does not.
Radim
Roger
> Output vector is now frozen when a module is started in GRASS tools
> and thawn if finished with success. It is not perfect, does not
> work from shell.
>
> Radim
>
> > Radim
> >
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Radim Blazek wrote:
Hi.
remove() directory fails on Windows so that vectors cannot be deleted
without error. Patch for lib/vector/Vlib/map.c is attached.
IMPORTANT!
done for both HEAD & 6.2.0 branch.
Hamish