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Dark Byte
Site Admin
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Joined: 09 May 2003
Posts: 26002
Location: The netherlands
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 Posted: Thu Oct 30, 2008 3:21 pm Post subject: |
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well, if you want to do a 'more complicated' way:
First detect what kind of filesystem is used. fat,ntfs, other
then find out where the filesystem stores the size value AND the the links to the used sectors/clusters
Set the size to zero and mark the used clusters as free.
You will probably need to get into kernelmode
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DeletedUser14087
I post too much
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Joined: 21 Jun 2006
Posts: 3069
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| Posted: Thu Oct 30, 2008 3:22 pm Post subject: |
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| smartz993 wrote: | | Rot1 wrote: | | blankrider wrote: | He already told you how to do it. Stop being stubborn and trying to make shit complicated.
Lesson learned: Not everything has to be complicated to be the correct and efficient way! |
I'm not!, i'm asking for a method OTHER THAN deleting a file, then he comes saying "stop trying doing stuff you don't know", how does it help me ? jesus am i the only one who get fucking pissed @ fucktards. |
Why are you looking for a method other than this one? It's the most simplistic. |
i'm not looking for something simple and like "hehe, that was easy, now bye bye", it's not a clever way to act. (for me).
| Dark Byte wrote: | well, if you want to do a 'more complicated' way:
First detect what kind of filesystem is used. fat,ntfs, other
then find out where the filesystem stores the size value AND the the links to the used sectors/clusters
Set the size to zero and mark the used clusters as free.
You will probably need to get into kernelmode |
will GetBinaryType do it ?
edit: shit, let me re-read your reply 500 times until i get it ;D.
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nog_lorp
Grandmaster Cheater
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Joined: 26 Feb 2006
Posts: 743
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| Posted: Thu Oct 30, 2008 4:55 pm Post subject: |
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The win32 way of doing fopen with "w" is calling CreateFile with CREATE_ALWAYS.
The "clever" (read: stupid) way of doing it would be
CreateFile with OPEN_ALWAYS
//SetFilePointer(hFile, 0, 0, FILE_BEGIN) if you want to read from the sile before you 0 it.
SetEndOfFile(hFile);
This might be marginally faster then deleting the file and recreating it, and might be marginally advantageous in stopping fragmentation. It is probably only worth while in cases where you have a file that is regularly growed, read, and then zoroed.
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DeletedUser14087
I post too much
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Joined: 21 Jun 2006
Posts: 3069
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| Posted: Thu Oct 30, 2008 5:23 pm Post subject: |
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| nog_lorp wrote: | The win32 way of doing fopen with "w" is calling CreateFile with CREATE_ALWAYS.
The "clever" (read: stupid) way of doing it would be
CreateFile with OPEN_ALWAYS
//SetFilePointer(hFile, 0, 0, FILE_BEGIN) if you want to read from the sile before you 0 it.
SetEndOfFile(hFile);
This might be marginally faster then deleting the file and recreating it, and might be marginally advantageous in stopping fragmentation. It is probably only worth while in cases where you have a file that is regularly growed, read, and then zoroed. |
nice!, thanks man. i will try this.
Edit: It fucking works, thank you  !!!
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