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Request #42741 ftruncate extended version
Submitted: 2007-09-23 15:21 UTC Modified: 2021-10-12 16:48 UTC
Votes:1
Avg. Score:3.0 ± 0.0
Reproduced:1 of 1 (100.0%)
Same Version:1 (100.0%)
Same OS:0 (0.0%)
From: beotiger at mail dot ru Assigned: cmb (profile)
Status: Wont fix Package: Filesystem function related
PHP Version: 5.2.4 OS: *
Private report: No CVE-ID: None
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 [2007-09-23 15:21 UTC] beotiger at mail dot ru 
Description:
------------
There should be an extending version of ftruncate which allows you to truncate not the end of file but the beginning of it (to a certain size) - so if you request filesize more than the current size, the zeros would be added at the beginning of file, not to the end (on demand, of course).

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 [2007-09-23 15:26 UTC] beotiger at mail dot ru 
There should be an extending version of ftruncate which allows you to
truncate not the end of file but the beginning of it (to a certain size)
- so if you request filesize more than the current size, the zeros would
be added at the beginning of file, not to the end (on demand, of
course).
It'd be useful for any logs, if their size shouldn't be more than the given number.
 [2011-04-08 21:14 UTC] jani@php.net
-Package: Feature/Change Request +Package: Filesystem function related -Operating System: any +Operating System: *
 [2021-10-12 16:48 UTC] cmb@php.net
-Status: Open +Status: Wont fix -Assigned To: +Assigned To: cmb
 [2021-10-12 16:48 UTC] cmb@php.net 
This would be grossly unefficient, what is the reason why there is
no such variant of ftuncate() in POSIX.  If you need that, you can
implement it in PHP, and I'd presume that it'd be about as fast as
a C implementation.
 
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