HP-UX Reference (11i v3 07/02) - 5 Miscellaneous Topics (vol 9)

s
sd(5) sd(5)
pointed to by SW_SESSIONS_OPTIONS
is made available to other scripts, the targets
option contains the single software_collection_spec for the targets on which the script is
being executed.
SW_SOFTWARE_SPEC
This variable contains the fully qualified software specification of the current product or
fileset. The software specification allows the product or fileset to be uniquely identified.
Additional environment variables that affect scripts run by
swinstall and swremove:
SW_CONFIG_AFTER_REBOOT
This variable should be read only by the
configure script. If this is set to any value
it indicates the
configure script was invoked by the
swconfig command during
system startup. This variable is set by the
/sbin/init.d/swconfig
system
startup script.
SW_DEFERRED_KERNBLD
Only applies to swinstall. This variable is normally unset. If it is set, the actions
necessary for preparing the system file
/stand/system cannot be accomplished from
within the postinstall scripts, but instead must be accomplished by the configurescripts.
This occurs whenever software is installed to a directory other than
/, such as for a clus-
ter client system. This variable should be read only by the configure and postinstall
scripts of a kernel fileset. The
swinstall command sets these environment variables
for use by the kernel preparation and build scripts.
SW_INITIAL_INSTALL
Only applies to swinstall. This variable is normally unset. If it is set, the swin-
stall
session is being run as the back end of an initial system software installation
("cold" install).
SW_KERNEL_PATH
Only applies to swinstall. The path to the kernel. The default value is
/stand/vmunix , defined by the swagent option or kernel_path .
SW_SESSION_IS_KERNEL
Indicates whether a kernel build is scheduled for the current install/remove session. A
TRUE value indicates that the selected kernel fileset is scheduled for a kernel build and
that changes to /stand/system
are required. A null value indicates that a kernel
build is not scheduled and that changes to
/stand/system
are not required.
The value of this variable is always equal to the value of
SW_SESSION_IS_REBOOT
.
SW_SESSION_IS_REBOOT
Indicates whether a reboot is scheduled for a fileset selected for removal. Because all
HP-UX kernel filesets are also reboot filesets, the values of this variables is always equal
to the value of SW_SESSION_IS_KERNEL
.
SW_SESSION_IS_UPDATE
A value of 1 indicates the SD command was invoked by the update-ux command
during an Operating System update. This variable is set by the update-ux command.
SW_SYSTEM_FILE_PATH
Only applies to swinstall . The path to the kernel’s system file. The default value is
/stand/system .
Signals
The SD commands catch the signals SIGQUIT, SIGINT, and SIGUSR1. If these signals are received, the
command prints a message, sends a Remote Procedure Call (RPC) to the agents to wrap up after comple-
tion, and then exits.
The agent ignores SIGHUP, SIGINT, and SIGQUIT. It immediately exits gracefully after receiving
SIGTERM, SIGUSR1, or SIGUSR2. Killing the agent may leave corrupt software on the system, and thus
should only be done if absolutely necessary. Note that when an SD command is killed, the agent does not
terminate until completing the task in progress.
The daemon ignores SIGHUP, SIGINT and SIGQUIT. It immediately exits gracefully after receiving
SIGTERM and SIGUSR2. After receiving SIGUSR1, it waits for completion of a copy or remove from a
depot session before exiting, so that it can register or unregister depots if necessary. Requests to start new
sessions are refused during this wait.
HP-UX 11i Version 3: February 2007 − 29 − Hewlett-Packard Company 449