09-17-2013
Quote:
Originally Posted by
leo_ultra_leo
Hi everybody,
How can I change the default UMASK for non root users, e.g. I want the umask for every new created user will be 0044.
Thanks
I would never want to be a user on a system you administer. Why in the world would you want to allow every user on the system to write into my personal files? Maybe it is nice that no one but me will be able to read my files; but granting everyone write access to my files is just plain wrong!
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umask(2) System Calls Manual umask(2)
NAME
umask - Sets and gets the value of the file creation mask
SYNOPSIS
#include <sys/types.h>
#include <sys/stat.h>
mode_t umask ( mode_t cmask );
STANDARDS
Interfaces documented on this reference page conform to industry standards as follows:
umask(): POSIX.1, XPG4, XPG4-UNIX
Refer to the standards(5) reference page for more information about industry standards and associated tags.
PARAMETERS
Specifies the value of the file mode creation mask.
DESCRIPTION
The umask() function sets the file mode creation mask of the process to the value of the cmask parameter and returns the previous value of
the mask. The cmask parameter is constructed by logically ORing file permission bits defined in the sys/mode.h header file.
Whenever a file is created (by the open(), mkdir(), or mknod() function), all file permission bits set in the file mode creation mask are
cleared in the mode of the created file. This clearing lets users restrict the default access to their files.
The mask is inherited by child processes.
RETURN VALUES
Upon successful completion, the previous value of the file mode creation mask is returned.
RELATED INFORMATION
Commands: chmod(1), mkdir(1), Bourne shell sh(1b), POSIX shell sh(1p), umask(1)
Functions: chmod(2), mkdir(2), mknod(2), open(2), stat(2)
Standards: standards(5)
delim off
umask(2)