UMASK(3) 1 UMASK(3)umask - Changes the current umaskSYNOPSIS
int umask ([int $mask])
DESCRIPTION umask(3) sets PHP's umask to $mask & 0777 and returns the old umask. When PHP is being used as a server module, the umask is restored when
each request is finished.
PARAMETERS
o $mask
- The new umask.
RETURN VALUES umask(3) without arguments simply returns the current umask otherwise the old umask is returned.
EXAMPLES
Example #1
umask(3) example
<?php
$old = umask(0);
chmod("/path/some_dir/some_file.txt", 0755);
umask($old);
// Checking
if ($old != umask()) {
die('An error occurred while changing back the umask');
}
?>
NOTES
Note
Avoid using this function in multithreaded webservers. It is better to change the file permissions with chmod(3) after creating the
file. Using umask(3) can lead to unexpected behavior of concurrently running scripts and the webserver itself because they all use
the same umask.
PHP Documentation Group UMASK(3)
Check Out this Related Man Page
PAM_UMASK(8) Linux-PAM Manual PAM_UMASK(8)NAME
pam_umask - PAM module to set the file mode creation mask
SYNOPSIS
pam_umask.so [debug] [silent] [usergroups] [umask=mask]
DESCRIPTION
pam_umask is a PAM module to set the file mode creation mask of the current environment. The umask affects the default permissions assigned
to newly created files.
The PAM module tries to get the umask value from the following places in the following order:
o umask= argument
o umask= entry of the users GECOS field
o pri= entry of the users GECOS field
o ulimit= entry of the users GECOS field
o UMASK= entry from /etc/default/login
o UMASK entry from /etc/login.defs
OPTIONS
debug
Print debug information.
silent
Don't print informative messages.
usergroups
If the user is not root and the username is the same as primary group name, the umask group bits are set to be the same as owner bits
(examples: 022 -> 002, 077 -> 007).
umask=mask
Sets the calling process's file mode creation mask (umask) to mask & 0777. The value is interpreted as Octal.
MODULE TYPES PROVIDED
Only the session type is provided.
RETURN VALUES
PAM_SUCCESS
The new umask was set successfully.
PAM_SERVICE_ERR
No username was given.
PAM_USER_UNKNOWN
User not known.
EXAMPLES
Add the following line to /etc/pam.d/login to set the user specific umask at login:
session optional pam_umask.so umask=0022
SEE ALSO pam.conf(5), pam.d(5), pam(7)AUTHOR
pam_umask was written by Thorsten Kukuk <kukuk@thkukuk.de>.
Linux-PAM Manual 06/04/2011 PAM_UMASK(8)
Using perl 5.8.0, Linux 2.4.20-30.9, RedHat 9.0.
We have many .cgi's that allow privileged users to upload files to the server through a web browser. We've had these .cgi's for years and have never had any problems with them. Recently the files being uploaded are sometimes being given 600... (16 Replies)
Hi!
My question is this:
Is it possible to change the default permissions in UNIX (666 for files and 777 for directories)?.
I am not talking about using the command "umask".
I mean, with the command "umask" you can modify permissions from a default permissions x. Is it possible to make... (4 Replies)
Hi,
Will umask work with find command ?
I was trying to do
find /newdir/apps/ -type d -name 'par' -print -exec umask 117 {} \;
it returns with
find: umask: Permission denied ,
I've checked permission of all the directores, they have 770.
however, If I use the command
find... (4 Replies)
hai guys ,
i am having problem in getting the knowledge about umask.
actually when i am putting command as umask some value is coming like 0022 by defalut.
we can change its value also.
but the main thing is thye file permisiion actually depends upon umask.how is it depends upon umask i want to... (6 Replies)
Due to urgent requirement to resolve some permission issues , I wish
to set solaris 8 server so that any file written is on 777 .
I guess need to set umask , how to set it ?? (7 Replies)
Hi,
Please, let me know how the umask is working? As per my understanding is aprt from subtracting from 666/777, logical gate operation is performing.
Ex: If I set uname 011, it gave the permission like 666 for file. Request you to explain which gate's operation performed.
$uname 011... (4 Replies)
Good Day!
I would like to ask, is there a way to find out the list of users or scripts that executed a umask command for a given time? Our server has been having issues about files being written with 000 access, and we need to find out if it's because someone or some code is playing around with... (4 Replies)
Hi ,
i am facing small issue if anybody help appreciated.
how can we give the default permissions as 777 for files by using umask command..
advance thank you..
regards
rajesh:wall: (5 Replies)
Introduction
I have seen some misinformation regarding Unix file permissions. I will try to set the record straight. Take a look at this example of some output from ls:
$ ls -ld /usr/bin /usr/bin/cat
drwxrwxr-x 3 root bin 8704 Sep 23 2004 /usr/bin
-r-xr-xr-x 1 bin bin ... (6 Replies)
Hi,
I have manually changed umak value by umask 0033 , After that i would like to change umask value into 0022 through shell scripting..
But it is changing while running the script. Once come out from script, it has not changed ...
Ex:
>umask
0033
>./1.sh
0022
>umask
0033
plz Any... (4 Replies)
We have umask defined under /etc/.login as 022.
I have my user specific umask defined in /userhome/.login as 002.
I understand ftp will not execute anything at destination, it simply transfers files.
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Hi All,
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How the Cron is creating the files with 026 umask, how to make it create files... (4 Replies)
Hi All
please help in this ..
I have application user called: startsys
umask already defined in the profile of application user as umask 033.
Actually application creating files once the file getting create it created with different permission which is not the same of the defined... (8 Replies)