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Framework Bug: CreateDirectory throws DirectoryNotFou ndException

Hello,

I'm having a problem when trying to use the Directory.Creat eDirectory()
method. It throws a DirectoryNotFou ndException exception. I'll try to
illustrate it:

Suppose you have the following (existing) directory:
d:\Sites\MySite \

And you whant to create the following:
d:\Sites\MySite \MyDir1\MyDir2\

It should be an easy task. Just call CreateDirectory (), like this:
Directory.Creat eDirectory( "d:\Sites\MySit e\MyDir1\MyDir2 \" ) ;

And it will create all missing dirs... in this case "MyDir1" and "MyDir2".

But... if you don't have read permissions of the "d:\" or "d:\Sites\"
directory, a DirectoryNotFou ndException exception is thrown.

I took a look around and many people are facing the same problem. My opinion
is that it is a "big bug" in the DotNet Framework implementation.

The problem is the way the method works... it check if exists and create the
directories starting from the root in this order:
d:\ (Check exists)
d:\Sites\ (Check exists)
d:\Sites\MySite \ (Check exists)
d:\Sites\MySite \MyDir1\ (Check exists and create)
d:\Sites\MySite \MyDir1\MyDir2\ (Check exists and create)

It should do the inverse... starting from the back until the directory is
found (adding the missing ones in and array and after that create then).

It is easy to solve the problem in a controlled environment. You just need
to give Read permissions to the entire path starting from the root (even if
you don't want to do that). But in other cases (like a site hosted in a
server were you have no control), this is impossible to do.

Is there a workaround to create a directory in these situations?

Thanks in advance,
Frederico Caldeira Knabben
Jul 21 '05 #1
4 4612
Hmmm, I just took all read permissions off of a directory I named Test.
Then I used
Directory.Creat eDirectory("C:\ Test\Test\Test\ Test")

and had no problem. Mind you that C:\Test had no read permissoins, and one
by one I used CreateDirectory . Then I deleted everything past the root node
and execute the line above. Either way, no problem.

Is this the exact line that gives you the problems?
Directory.Creat eDirectory( "d:\Sites\MySit e\MyDir1\MyDir2 \" ) ;? If so
there's an error there, consistent with what the documentation says will
happen in such cases
http://msdn.microsoft.com/library/de...classtopic.asp
You either need to put a @ at the beginning or use "\\" where you have
single ones. I've tried it a few different ways and can't get it to happen.
But if I put some illegal characters in there, no problemo, kaboom with a
DirectoryNotFou nd

Unless you left something out to replicate this problem, I'm not sure it's a
bug.
--

W.G. Ryan, eMVP

http://forums.devbuzz.com/
http://www.knowdotnet.com/williamryan.html
http://www.msmvps.com/WilliamRyan/
http://www.devbuzz.com/content/zinc_...center_pg1.asp
"Frederico Caldeira Knabben" <fr****@fredck. com> wrote in message
news:uM******** ********@TK2MSF TNGP10.phx.gbl. ..
Hello,

I'm having a problem when trying to use the Directory.Creat eDirectory()
method. It throws a DirectoryNotFou ndException exception. I'll try to
illustrate it:

Suppose you have the following (existing) directory:
d:\Sites\MySite \

And you whant to create the following:
d:\Sites\MySite \MyDir1\MyDir2\

It should be an easy task. Just call CreateDirectory (), like this:
Directory.Creat eDirectory( "d:\Sites\MySit e\MyDir1\MyDir2 \" ) ;

And it will create all missing dirs... in this case "MyDir1" and "MyDir2".

But... if you don't have read permissions of the "d:\" or "d:\Sites\"
directory, a DirectoryNotFou ndException exception is thrown.

I took a look around and many people are facing the same problem. My opinion is that it is a "big bug" in the DotNet Framework implementation.

The problem is the way the method works... it check if exists and create the directories starting from the root in this order:
d:\ (Check exists)
d:\Sites\ (Check exists)
d:\Sites\MySite \ (Check exists)
d:\Sites\MySite \MyDir1\ (Check exists and create)
d:\Sites\MySite \MyDir1\MyDir2\ (Check exists and create)

It should do the inverse... starting from the back until the directory is
found (adding the missing ones in and array and after that create then).

It is easy to solve the problem in a controlled environment. You just need
to give Read permissions to the entire path starting from the root (even if you don't want to do that). But in other cases (like a site hosted in a
server were you have no control), this is impossible to do.

Is there a workaround to create a directory in these situations?

Thanks in advance,
Frederico Caldeira Knabben

Jul 21 '05 #2
I've tried it singleing out each permission. I'm not seeing any
inconsistent behavior. I'm running 2000 Pro .

Also, I did it in C# and using the exact code you posted, I can't even get
it to compile so I'm guessing that's not the actual code..unauthori zed
escape sequence. I've butchered it every way I know how. Now, if I use D:\
which is CD Rom on my machine, I get directoryNotFou nd even though D:\
Exists. According to the documentation, this is consistent.

Cheers,

Bill

--

W.G. Ryan, eMVP

http://forums.devbuzz.com/
http://www.knowdotnet.com/williamryan.html
http://www.msmvps.com/WilliamRyan/
http://www.devbuzz.com/content/zinc_...center_pg1.asp
"Frederico Caldeira Knabben" <fr****@fredck. com> wrote in message
news:uM******** ********@TK2MSF TNGP10.phx.gbl. ..
Hello,

I'm having a problem when trying to use the Directory.Creat eDirectory()
method. It throws a DirectoryNotFou ndException exception. I'll try to
illustrate it:

Suppose you have the following (existing) directory:
d:\Sites\MySite \

And you whant to create the following:
d:\Sites\MySite \MyDir1\MyDir2\

It should be an easy task. Just call CreateDirectory (), like this:
Directory.Creat eDirectory( "d:\Sites\MySit e\MyDir1\MyDir2 \" ) ;

And it will create all missing dirs... in this case "MyDir1" and "MyDir2".

But... if you don't have read permissions of the "d:\" or "d:\Sites\"
directory, a DirectoryNotFou ndException exception is thrown.

I took a look around and many people are facing the same problem. My opinion is that it is a "big bug" in the DotNet Framework implementation.

The problem is the way the method works... it check if exists and create the directories starting from the root in this order:
d:\ (Check exists)
d:\Sites\ (Check exists)
d:\Sites\MySite \ (Check exists)
d:\Sites\MySite \MyDir1\ (Check exists and create)
d:\Sites\MySite \MyDir1\MyDir2\ (Check exists and create)

It should do the inverse... starting from the back until the directory is
found (adding the missing ones in and array and after that create then).

It is easy to solve the problem in a controlled environment. You just need
to give Read permissions to the entire path starting from the root (even if you don't want to do that). But in other cases (like a site hosted in a
server were you have no control), this is impossible to do.

Is there a workaround to create a directory in these situations?

Thanks in advance,
Frederico Caldeira Knabben

Jul 21 '05 #3
Hello William,

Thanks for the prompt response.

Sorry for the slashes... that was just a sample I wrote in the e-mail to
make you understand the problem.

Ok.. I just made a new sample... with a ASPX page... inside the onload
method of the page I put:

System.IO.Direc tory.CreateDire ctory( @"d:\Sites\FCKe ditor\Test\" ) ;

I have just Administrator permissions over the "d:\" and full permissions to
the "IIS_WPG" user starting from "d:\Sites\" ... the following error occours:
[DirectoryNotFou ndException: Could not find a part of the path "D:\".]

If I go to the "d:\" directory and give just "Read" permissions to the
"IIS_WPG" user, everything works just fine.

I'm using Window 2003 with Framework 1.1.

I hope you or someone else can help me.

Best regards,
FredCK


"William Ryan eMVP" <do********@com cast.nospam.net > wrote in message
news:#c******** ******@TK2MSFTN GP09.phx.gbl...
Hmmm, I just took all read permissions off of a directory I named Test.
Then I used
Directory.Creat eDirectory("C:\ Test\Test\Test\ Test")

and had no problem. Mind you that C:\Test had no read permissoins, and one by one I used CreateDirectory . Then I deleted everything past the root node and execute the line above. Either way, no problem.

Is this the exact line that gives you the problems?
Directory.Creat eDirectory( "d:\Sites\MySit e\MyDir1\MyDir2 \" ) ;? If so
there's an error there, consistent with what the documentation says will
happen in such cases
http://msdn.microsoft.com/library/de...classtopic.asp You either need to put a @ at the beginning or use "\\" where you have
single ones. I've tried it a few different ways and can't get it to happen. But if I put some illegal characters in there, no problemo, kaboom with a
DirectoryNotFou nd

Unless you left something out to replicate this problem, I'm not sure it's a bug.
--

W.G. Ryan, eMVP

http://forums.devbuzz.com/
http://www.knowdotnet.com/williamryan.html
http://www.msmvps.com/WilliamRyan/
http://www.devbuzz.com/content/zinc_...center_pg1.asp
"Frederico Caldeira Knabben" <fr****@fredck. com> wrote in message
news:uM******** ********@TK2MSF TNGP10.phx.gbl. ..
Hello,

I'm having a problem when trying to use the Directory.Creat eDirectory()
method. It throws a DirectoryNotFou ndException exception. I'll try to
illustrate it:

Suppose you have the following (existing) directory:
d:\Sites\MySite \

And you whant to create the following:
d:\Sites\MySite \MyDir1\MyDir2\

It should be an easy task. Just call CreateDirectory (), like this:
Directory.Creat eDirectory( "d:\Sites\MySit e\MyDir1\MyDir2 \" ) ;

And it will create all missing dirs... in this case "MyDir1" and "MyDir2".
But... if you don't have read permissions of the "d:\" or "d:\Sites\"
directory, a DirectoryNotFou ndException exception is thrown.

I took a look around and many people are facing the same problem. My

opinion
is that it is a "big bug" in the DotNet Framework implementation.

The problem is the way the method works... it check if exists and create

the
directories starting from the root in this order:
d:\ (Check exists)
d:\Sites\ (Check exists)
d:\Sites\MySite \ (Check exists)
d:\Sites\MySite \MyDir1\ (Check exists and create)
d:\Sites\MySite \MyDir1\MyDir2\ (Check exists and create)

It should do the inverse... starting from the back until the directory is found (adding the missing ones in and array and after that create then).

It is easy to solve the problem in a controlled environment. You just need to give Read permissions to the entire path starting from the root (even

if
you don't want to do that). But in other cases (like a site hosted in a
server were you have no control), this is impossible to do.

Is there a workaround to create a directory in these situations?

Thanks in advance,
Frederico Caldeira Knabben


Jul 21 '05 #4
This is a relatively known .NET bug or "feature".. .


Both Directory.Creat eDirectory(path ) and DirectoryInfo.C reateSubdirecto ry(path) require user to have Read access to the drive's root directory (i.e. <Drive>:\).


Many ASP.NET hosting providers (especially those running Windows 2003 Server) will not allow user running ASP.NET worker process read access to the root folder, so CreateDirectory will always fail. You can not blame hosting providers - they do right thing, securing shared environment from users with malicious intents.


The only workaround I have found is to replace call to Directory.Creat eDirectory() with call to unmanaged code, like msvcrt's _mkdir(char*):


[DllImport("msvc rt.dll", SetLastError=tr ue)]

static extern int _mkdir(string path);


....

//replace call to Directory.Creat eDirectory with:

_mkdir(newDirec tory);

....



This will work only if your code is granted "Allow Calls to Unmanaged Code" permission but most hosting environments allow that.



You can find more details in my recent Blog entry at http://hatka.net/wlogdev/archive/2004/08/29/178.aspx



Dmitry Kulakovsky

"Frederico Caldeira Knabben" <fr****@fredck. com> wrote in message news:#j******** ******@tk2msftn gp13.phx.gbl...
Hello William,

Thanks for the prompt response.

Sorry for the slashes... that was just a sample I wrote in the e-mail to
make you understand the problem.

Ok.. I just made a new sample... with a ASPX page... inside the onload
method of the page I put:

System.IO.Direc tory.CreateDire ctory( @"d:\Sites\FCKe ditor\Test\" ) ;

I have just Administrator permissions over the "d:\" and full permissions to
the "IIS_WPG" user starting from "d:\Sites\" ... the following error occours:
[DirectoryNotFou ndException: Could not find a part of the path "D:\".]

If I go to the "d:\" directory and give just "Read" permissions to the
"IIS_WPG" user, everything works just fine.

I'm using Window 2003 with Framework 1.1.

I hope you or someone else can help me.

Best regards,
FredCK






"William Ryan eMVP" <do********@com cast.nospam.net > wrote in message
news:#c******** ******@TK2MSFTN GP09.phx.gbl...
Hmmm, I just took all read permissions off of a directory I named Test.
Then I used
Directory.Creat eDirectory("C:\ Test\Test\Test\ Test")

and had no problem. Mind you that C:\Test had no read permissoins, and

one
by one I used CreateDirectory . Then I deleted everything past the root

node
and execute the line above. Either way, no problem.

Is this the exact line that gives you the problems?
Directory.Creat eDirectory( "d:\Sites\MySit e\MyDir1\MyDir2 \" ) ;? If so
there's an error there, consistent with what the documentation says will
happen in such cases

http://msdn.microsoft.com/library/de...classtopic.asp
You either need to put a @ at the beginning or use "\\" where you have
single ones. I've tried it a few different ways and can't get it to

happen.
But if I put some illegal characters in there, no problemo, kaboom with a
DirectoryNotFou nd

Unless you left something out to replicate this problem, I'm not sure it's

a
bug.
--

W.G. Ryan, eMVP

http://forums.devbuzz.com/
http://www.knowdotnet.com/williamryan.html
http://www.msmvps.com/WilliamRyan/
http://www.devbuzz.com/content/zinc_...center_pg1.asp
"Frederico Caldeira Knabben" <fr****@fredck. com> wrote in message
news:uM******** ********@TK2MSF TNGP10.phx.gbl. ..
Hello,

I'm having a problem when trying to use the Directory.Creat eDirectory()
method. It throws a DirectoryNotFou ndException exception. I'll try to
illustrate it:

Suppose you have the following (existing) directory:
d:\Sites\MySite \

And you whant to create the following:
d:\Sites\MySite \MyDir1\MyDir2\

It should be an easy task. Just call CreateDirectory (), like this:
Directory.Creat eDirectory( "d:\Sites\MySit e\MyDir1\MyDir2 \" ) ;

And it will create all missing dirs... in this case "MyDir1" and "MyDir2".
But... if you don't have read permissions of the "d:\" or "d:\Sites\"
directory, a DirectoryNotFou ndException exception is thrown.

I took a look around and many people are facing the same problem. My

opinion
is that it is a "big bug" in the DotNet Framework implementation.

The problem is the way the method works... it check if exists and create

the
directories starting from the root in this order:
d:\ (Check exists)
d:\Sites\ (Check exists)
d:\Sites\MySite \ (Check exists)
d:\Sites\MySite \MyDir1\ (Check exists and create)
d:\Sites\MySite \MyDir1\MyDir2\ (Check exists and create)

It should do the inverse... starting from the back until the directory is found (adding the missing ones in and array and after that create then).

It is easy to solve the problem in a controlled environment. You just need to give Read permissions to the entire path starting from the root (even

if
you don't want to do that). But in other cases (like a site hosted in a
server were you have no control), this is impossible to do.

Is there a workaround to create a directory in these situations?

Thanks in advance,
Frederico Caldeira Knabben



Jul 21 '05 #5

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