[ naviserver-Bugs-1340708 ] ns_ftruncate broken?

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Bugs item #1340708, was opened at 2005-10-28 15:46
Message generated for change (Settings changed) made by vasiljevic
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Category: C-API
Group: Current
>Status: Closed
>Resolution: Invalid
Priority: 5
Submitted By: Bernd Eidenschink (eide)
Assigned to: Nobody/Anonymous (nobody)
Summary: ns_ftruncate broken?

Initial Comment:
Example:

<file> = File with 100 chars

Test 1:
set f [open <file> w]
ns_ftruncate $f 200
close $f

File size = 200 bytes completely with "0" bytes.

Test 2:
set f [open <file> w]
ns_ftruncate $f 50
close $f

File size = 50 bytes completely with "0" bytes.

ns_truncate works as expected when appending or truncating. Or do I just 
expect the wrong thing from ns_ftruncate?


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>Comment By: Zoran Vasiljevic (vasiljevic)
Date: 2005-10-28 15:51

Message:
Logged In: YES 
user_id=95086

You are opening with "w" which truncates the file initially.
If you wanted to open existing file for writing, without 
zeroing the file you need to:

  open file a+
  open file w+

or similar. See "man n open" for more info.



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