HP NonStop G-Series - Manual (Page 203)

set-user-ID
program A program file that has the S_ISUID bit set in its file mode.
shared memory An interprocess communication mechanism that allows two or more processes to share a given
region of memory.
shared run-time
library (SRL). An object file that the operating system links to a program file at run time. SRLs use direct
addressing and cal load and execute only at a specific assigned virtual memory address (the
same address in all processes). TNS processes and TNS/R processes use different forms of SRLs.
signal The method by which an environment notifies a process of an event.
signal delivery The time when Open System Services takes the action appropriate for a specific process and a
specific signal.
signal generation The time when an event occurs that causes a signal for a process.
signal handler A function or procedure that is executed when a specific signal is delivered to a specific process.
signal mask The set of signals that are currently blocked from delivery to a specific process.
socket An end-point for stream-oriented communication. A socket has a file descriptor.
special character A character entered from a terminal that has an effect other than being part of the input stream
from that terminal.
special file A file in the Open System Services (OSS) file system that is not a regular file. Special files include
directories, FIFOs, and character special files such as terminal device files. Contrast with
regular
file.
SRL. See shared run-time library (SRL). .
static server In the Guardian environment, a process that runs continuously and provides a specific service to
other processes. A static server differs from a traditional UNIX demon in that a demon actively
looks for tasks to perform, while a static server only performs tasks brought to its attention by a
client (requestor) process. See also
demon .
storage pool A set of physical disk volumes administered as a set of logical disk volumes. A logical disk volume
can span multiple physical disk volumes. When a logical volume becomes full, more physical
volumes can be added.
storage-pool file A file containing a list of disk volumes to be used by a fileset. As these volumes are filled, more
volumes can be added to the storage-pool file.
strictly conforming
POSIX.1
application An application that requires only the facilities described in ISO/IEC IS 9945-1: 1990 and the
applicable computer language standards. Such an application must accept any behavior or value
described in ISO/IEC IS 9945-1: 1990 as unspecified or implementation-defined and, for symbolic
constants, accept any value permitted by ISO/IEC IS 9945-1: 1990.
super ID On HP NonStop systems, a privileged user who can read, write, execute, and purge all files on
the system. The super ID is usually a member of a system-supervisor group.
The super ID has the set of special permissions called appropriate privileges. In the Guardian
environment, the structured view of the super ID, which is (255, 255), is most commonly used;
in the Open System Services (OSS) environment, the scalar view of the super ID, which is 65535,
is most commonly used.
superblock The part of the Open System Services (OSS) environment that contains all the information about
the current state of the OSS file system. The superblock contains such items as the free list and
the size of inodes.
supplementary
group ID A process attribute that is used to determine the file access permissions for the process.
SVID The System V Interface Definition for UNIX, published by AT&T.
SVR4 System V Release 4, a specific implementation of UNIX.
See also
System V .
symbolic link A type of special file that acts as a name pointer to another file. A symbolic link contains a
pathname and can be used to point to a file in another fileset. Symbolic links are not included
in ISO/IEC IS 9945-1: 1990. Contrast with
hard link.
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