At 11:18 AM -0400 5/17/06, John Nichel wrote:
tedd wrote:
Hi (please insert your preference):
This should be simple, but I'm having problems.
I have a program that uploads an image file and then tries to set
the permissions for the image (to be altered later). However, I get
a "Warning: chmod(): Operation not permitted" error when trying to
set the permission, what gives? If my program created the file,
shouldn't it have permission to set the files permissions?
What am I not understanding?
Without seeing code, permissions of the directories, what sticky
bits might or might not be set, etc., you could not be understanding
many things....or just one....who knows.
I read all of your Google links, but no help. Just another example of
how Google is not the answer.
In any event, my code is pretty simple, just:
chmod($url, 0755); //where $url is the file I want to change.
The error I receive is noted above in the subject line.
The permissions of the directories vary, but the folder that has the
file I want to change permissions is currently set at 0777.
In doing a lstat() of both the parent program that created the file
and the child file shows that they both have the identical uid and
gid (i.e., the same user and group id's).
Now, everything I've read, says:
chmod() changes the permission of the specified file with the following caveat.
"chmod() can only change the permissions of files that are owned by
the user running the command. In most cases, this is the user that
the web server runs on."
That confuses me, because who's the user here? Is it just the system
administrator or the application?
And if it is just the system administrator, then can't the system
admin change anything he/she wants anyway? What's the point of having
uid and gid's if a program can't change the permissions of a sibling
file?
I have tons of references as to what php filesystem functions are
available, but I need a good reference as to what permissions are and
how they actually can be changed in php -- does anyone have one a
good reference OR care to explain?
As it is now, I know how ride the horse, but I can't get the gate open.
Thanks.
tedd
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