I've implemented a user mode program and a Windows file system minifilter that creates a skeleton view of users files for a remote file storage system. It maps the remote files to the local drive. The user mode program creates a reparse tag for each file on the remote system. When a create request (e.g., CreateFile for read) is detected, the minifilter asks the user mode program to download the file. This should only happen when a program wants to open the file for viewing or editing.
But, I'm finding that Windows Explorer is triggering my files to download. I'd like to prevent the Explorer File windows and File Open/Save dialogs from
triggering downloads. And, I also want to display the file thumbnails and file
size.
[Update: I've found I can use Windows sparse files to show my remote
file size in Explorer. ]
Therefore, I have also implemented a Shell Extension, IThumbnailProvider, that downloads a rendition of the file. This provides the file thumbnails.
For my testing, I've registered the IThumbnailProvider for all files (*) and for .jpg files.
I'm seeing two interesting behaviors using a combination of Process Monitor and DebugView (both from SysInternals):
1. If I make my minifilter reject requests to open the file from Explorer, then my IThumbnailProvider is invoked.
2. If I permit open requests from Explorer, I see thumbcache.dll in the call stack trying to open the file and my IThumbnailProvider is not called. It appears that the default thumbnail provider reads the downloaded file and creates the thumbnail.
I must be missing something.
Update: if I use InitializeWithStream instead of InitializeWithFile, it appears my handler is invoked. But, that also triggers a download of the file.
There are many shell extension types which can access to your files. Icon handler can read file to create icon, Info tip handler can read file to create text hint, Data object handler can read file to create clipboard data and so on.
Questions from developer with the same problem: first and second. Solution was to create namespace shell extension. NSE can control all access to your files.
I am trying to open a locked excel sheet. The warning says it is locked because it is being used by "AN Other".
This person does not have the sheet open, does not have any excel applications open, does not have any excel based tasks running in the task list and has tried the good old "turning it off and on again".
Neither of us can save onto this filename, change it in windows explorer or delete the file.
We have "saved as" another name but really need the original name. I looked at a few forums and they suggest this is an excel/windows bug.
Am using excel 2010 and Windows 7.
You need to get in touch with your IT support.
In a company network, a file will be locked for other users when somebody edits it. It can happen sometimes that the file does not get released (unlocked) when the user closes it. Your IT Support people need to unlock the file, so you can edit it again.
I am attempting to open a .MSI installer package file to modify it. Whenever I try to open it, it opens in read-only mode. I see this with Orca, with InstEd, or when opening the file directly via code:
`MsiOpenDatabase()` (ERROR_OPEN_FAILED with MSIDBOPEN_DIRECT or
MSIDBOPEN_TRANSACT persistence modes).
The file itself does not have the read-only attribute set (in fact, has no attributes set)
I am using an account with Administrators group access
As far as I can tell, no other process has the file open
No installs are in progress or suspended
I can copy the file to another location, and open it read/write there. But the original, I cannot touch
Thanks in advance for your help.
My guess is that this is caused by one of the following factors:
Custom NTFS access rights - defined for the file in its security descriptor
The file might be "blocked" - marked with a special flag after being downloaded via Internet Explorer.
The resolution for the latter is to right click the file and select properties and click the unblock button at the bottom of the property page and pressing OK.
The resolution for custom NTFS rights are done in a similar way by going into the security
tab of the property page for the file, but it is easier just to copy and paste the file and use the fresh copy with the default security.
Found it.
#Glytzhkof, you almost had it but there's a detail I did not know about, and left out. This is a package that lies in a folder under "access protection" by my system's anti-virus program: a filesystem hook that blocks modification of critical system and AV files. Turn off access protection temporarily, and the file is wide open.
Fortunately, one of my teammates had some experience with this, and suggested I try it. Bingo.
Thanks, all.
What I have done to get it working was to create first a backup of the MSI file, and then open that backup. It worked for me
Try to close/kill processes that might interfere, for example:
Other running Install shield instances
Installshield updater
Installshield licensing service
Antivirus
I'm using PGAdmin 1.14.3.
When I try to execute an import command:
COPY grad(country_code, postal_code, place_name, admin_name1, admin_code1, admin_name2, admin_code2, admin_name3, admin_code3, latitude, longitude, accuracy)
FROM 'C:\\Users\\denis\\Desktop\\BP2Project\\USA\\US.txt';
I get a
ERROR: could not open file
"C:\Users\denis\Desktop\BP2Project\USA\US.txt" for reading:
Permission denied SQL state: 42501
I did look up other similar questions and none of them solved my issue.
I logged in as user "postgres" who is the superuser. I don't see why I'm missing permissions. I'm on Windows 7.
The permissions article mentioned in the answer by Houari and Flimzy is a good reference material, but a direct answer (the quick fix I used) is:
Right click the folder containing the data file(s) that permission was denied to and then click Properties.
In the Folder's Properties window, select the Security tab.
Click the Edit button.
In the "Permissions for the folder" window that opened, click the Add... button.
Type Everyone into the "Enter the object names to select" text area box.
Click OK and the window will close.
Verify that the default Read & Execute permissions were set to Allow via the check checkbox in the previous window.
As JLB notes, Write permission is needed if dumping from PostgreSQL, opposed to copying into it.
Click OK and the window will close.
Click the Apply button in the Folder Properties window.
Now you can run the SQL COPY statement that needs to access those files.
Once done, return to the Folder's Properties window.
Click the Edit button.
Select the Everyone entry in the "Group or user names:" field.
Click the Remove button.
Click OK on the remaining open windows.
The permissions have now been returned to what they were.
The user Postgres must have read access on the file from which you are about to copy.
Look at this article to see how to modify files' security access on Windows.
Ok, this is how got COPY command working,to export a table to CSV, step by step.
Pls note that I am using pgAdmin 111.
Create the target folder you want to export a table to. E.g C:\myExports
Set a read/write permission on this folder following the steps below :
Right click the folder containing the data file(s) that permission was denied >to and then click Properties.
In the Folder's Properties window, select the Security tab.
Click the Edit button.
In the "Permissions for the folder" window that opened, click the Add... button.
Type Everyone into the "Enter the object names to select" text area box.
Click OK and the window will close.
Verify that the default Read & Execute permissions were set to Allow via the >check checkbox in the previous window.
Click OK and the window will close.
Click the Apply button in the Folder Properties window.
This is the tricky part, inside myExports folder create a blank CSV file with your desired name.E.g employee.csv
Then run the Copy command like this :
copy employee to 'C:\myExports\employee.csv' delimiter ',' csv;
employee is the table name in this example..
Hope this helps.
If you don't want to give permissions to Everyone, you can add permissions to the account that started the service. In the Control Panel - Administrative Tools - Services, copy the account name in the 'Log On' tab. (On my system the account is called 'Network Service'.) Then share the folder with the CSV-file with this user as shown in the answer above.
To solve this problem you must give permission to the CSV file because that CSV file present in a COPY command are read directly by the server, but not client application. So to make this file accessible to a server we must give full read-write permission so that Postgresql user can read and write on that file.
Reference: article showing step by step procedure.
I just ran into this error and even after adding postgres to permissions on the file folder and the file itself, it still didn't work. So, I put the file in a public folder. On Windows this was the path: "C:\Users\Public\Documents\census.csv." It worked!
Responses to this problem on different threads go something like this
1. "Tell me exactly what command you used"
2. "Make sure you have right permissions"
3. "Just use /copy"
I just tried giving permissions to Everyone on the cvs file I am trying to copy from, and it is still giving me the permission denied error. I think this functionality is broken and has been broken for multiple consecutive releases over multiple consecutive versions of Windows.
for me and I've just spent some long hours on this.
I have a central db residing on a HP box running 14.04 postgresql-9.5 pgAdmin3 postgis-2.2, shares are made through a tweeked Samba share. My clients are using a mixture of windows 10.1, 7, 8.1 and I have one ubuntu 14.04 desktop.
I'm working with large tables updating records and normalising data and have built the routines around SQL copy statements from CSV files which were made from the core COPY public.table_1 TO (the share folder I'd set up in Samba https://www.youtube.com/watch?v=ndAYZ0DJ-U4) '/srv/samba/share/[filename].csv'
I can then update the database once the tables have been amended with COPY table_1 from '/srv/samba/share/test.csv' USING DELIMITERS ',' WITH NULL AS '' CSV HEADER; from any of my clients.
The key as far as I have been able to determine is that the clients doing the updating must be superusers, also everything must tie up in terms of users as there are 4 servers working together here Postgresql, Samba, UNIX and WINS
All of my users are registered on each of the servers with the same username and password homogeneity is the main factor.
I had tried for a long time moving things about and trying various naming conventions but in the end it was http://www.postgresql.org/message-id/CFF47E56EA077241B1FFF390344B5FC10ACB1C0C#webmail.begavalley.nsw.gov.au that sorted me out it was like a big switch clicking in. chown 777 on your shares and group management was an important learning curve but., the hours I've spent on this will reap rewards down the line... Loving Ubuntu loving life and loving the spirit of open source but that just might be sleep deprivation kicking in... IT WORKS
I am trying to execute SQL commands directly from a file in psql 14, and landed the same error.
The reason is that "postgres" user is different from the 'admin' or the main user of the operating-system. So, this main user denies "postgres" to access files from its file system.
Although there is a way to bypass it.
Windows lets any user access the files in 'C:\Users\Public' and Linux distros allow files in '/tmp' folder to do the same.
So, whatever files you are trying to access from postgres' terminal, keep the files in
'C:\Users\Public' for Windows
'/tmp' in Ubuntu
Read from the orginal source of this answer
use \copy command from psql instead with this config:
sudo psql -U postgres -d <your-db> -c "\copy <your-query-or-table> TO '<pat-to-save-file>' WITH (FORMAT CSV)"
I have a client application where we try to check files in and out from SharePoint for editing. I am using SharePoint's SOAP interfaces and some FrontPage interfaces to do this. It used to work fine under SharePoint 2007, but with 2010 I can't check out or check in a file if I have the file open for editing. I get a message like "FileXXX is locked for exclusive use by DOMAIN\user" when I examine the returned error message. I also cannot update any of the user defined SharePoint fields for a file/list if the file is open for editing.
My question is this: Is there a way to change the access/lock for an open file to make it non-exclusive temporarily and then restore it?
Note: Some of my data files are opened using windows file handles (flat files) and others are opened using windows structured storage (compound document files).
This may not work for Sharepoint specifically, but the ReOpenFile() API does what you want. I don't know of any other way to do this.
http://msdn.microsoft.com/en-us/library/windows/desktop/aa365497(v=vs.85).aspx