08-25-2008
When you created the file, some app (example: an editor on another PC or on your unix box), writes the file for the first time and the umask value is different from your default umask. The protections persist unless you overwrite them.
apps may call umask, so that while running and creating files in your name, the protections are different.
man 2 umask
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LEARN ABOUT OPENSOLARIS
umask
umask(2) System Calls umask(2)
NAME
umask - set and get file creation mask
SYNOPSIS
#include <sys/types.h>
#include <sys/stat.h>
mode_t umask(mode_t cmask);
DESCRIPTION
The umask() function sets the process's file mode creation mask to cmask and returns the previous value of the mask. Only the access per-
mission bits of cmask and the file mode creation mask are used. The mask is inherited by child processes. See Intro(2) for more information
on masks.
RETURN VALUES
The previous value of the file mode creation mask is returned.
ATTRIBUTES
See attributes(5) for descriptions of the following attributes:
+-----------------------------+-----------------------------+
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
+-----------------------------+-----------------------------+
|Interface Stability |Standard |
+-----------------------------+-----------------------------+
|MT-Level |Async-Signal-Safe |
+-----------------------------+-----------------------------+
SEE ALSO
mkdir(1), sh(1), Intro(2), chmod(2), creat(2), mknod(2), open(2), stat.h(3HEAD), attributes(5), standards(5)
SunOS 5.11 28 Dec 1996 umask(2)