Bug #80492 [Nab]: CHMOD does not work
Edit report at https://bugs.php.net/bug.php?id=80492&edit=1
ID: 80492
User updated by: gilperon at gmail dot com
Reported by: gilperon at gmail dot com
Summary: CHMOD does not work
Status: Not a bug
Type: Bug
Package: *General Issues
Operating System: CENTOS 7 and 8
PHP Version: 8.0.0
Block user comment: N
Private report: N
New Comment:
peehaa@php.net what? Who says that's how it works? You? Check some example man page of chmod
https://linux.die.net/man/1/chmod
I checked others too, there is absolutetly nothing saying the permission should not be changed if
the owner is not who is requesting the permission change. I AM NOT CHANGING owner, I am chaning the
permission. There is no security implication since I can already delete and write to that file.
I cant see how you came to the conclusion on your own.
Previous Comments:
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[2020-12-07 17:33:49] peehaa@php.net
This is just how it works. To chmod a file you either need to be the owner or root
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[2020-12-07 17:30:43] gilperon at gmail dot com
Description:
------------
This bug happens also on PHP 7.X and 8.X.
When using PHP command "chmod(filename,persmission);" on a file owned by "root",
PHP will say "Operation not permitted". Alright, it looks fine, since apache runs as
"apache" user.
HOWEVER I can easily use "unlink", "move_uploaded_file",
"file_put_contents" and many other PHP functions on files OWNED BY ROOT and any other
user.
So why cant "chmod" change the file permission of a file that other PHP functions may well
EVEN DELETE OR WRITE to that file, despite being owned by another user on ther server. I can see how
this isnt a bug and it took me 3 hours to get to the bottom of it cause I couldnt belive what was
happening since I could easily read/write to files but weirdly, "chmod" couldnt change
permission.
Test script:
---------------
chdmod(filename,0777)
Expected result:
----------------
permission should be shown
Actual result:
--------------
OPERATION NOT PERMITTED.
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Edit this bug report at https://bugs.php.net/bug.php?id=80492&edit=1
Thread (5 messages)