/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License (the "License").
* You may not use this file except in compliance with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* or http://www.opensolaris.org/os/licensing.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
/*
* Copyright 2009 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
/* Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T */
/* All Rights Reserved */
#include <stdio.h>
#include <signal.h>
#include <stdlib.h>
#include <unistd.h>
#include <locale.h>
#include <libintl.h>
#include <pkgdev.h>
#include <pkglib.h>
#include <instzones_api.h>
#include <libadm.h>
#include <libinst.h>
#include <messages.h>
#include "quit.h"
/*
* imported global variables
*/
/* imported from main.c */
extern struct pkgdev pkgdev; /* holds info about the installation device */
extern int npkgs; /* the number of packages yet to be installed */
extern int admnflag; /* != 0 if any pkgop admin setting failed (4) */
extern int doreboot; /* != 0 if reboot required after installation */
extern int failflag; /* != 0 if fatal error has occurred (1) */
extern int intrflag; /* != 0 if user selected quit (3) */
extern int ireboot; /* != 0 if immediate reboot required */
extern int nullflag; /* != 0 if admin interaction required (5) */
extern int warnflag; /* != 0 if non-fatal error has occurred (2) */
/*
* forward declarations
*/
static ckreturnFunc_t *ckreturnFunc = (ckreturnFunc_t *)NULL;
static char *zoneTempDir = (char *)NULL;
static void trap(int signo);
static zoneList_t zoneList = (zoneList_t)NULL;
static int trapEntered = 0;
/*
* exported functions
*/
void quit(int retcode);
void quitSetCkreturnFunc(ckreturnFunc_t *a_ckreturnFunc);
void quitSetZoneName(char *a_zoneName);
void quitSetZoneTmpdir(char *z_zoneTempDir);
void quitSetZonelist(zoneList_t a_zlst);
sighdlrFunc_t *quitGetTrapHandler(void);
/*
* *****************************************************************************
* global external (public) functions
* *****************************************************************************
*/
/*
* Name: quitGetTrapHandler
* Description: return address of this modules "signal trap" handler
* Arguments: void
* Returns: sighdlrFunc_t
* The address of the trap handler that can be passed to
* the signal() type system calls
*/
sighdlrFunc_t *
quitGetTrapHandler()
{
return (&trap);
}
/*
* Name: quitSetCkreturnFunc
* Description: set the ckreturn() interface to call when quit() is called
* Arguments: a_ckreturnFunc - pointer to function to call when quit() is
* called
* Returns: void
* NOTE: When quit() is called if a "ckreturnfunc" is set, then the first
* action quit() takes is to call the "ckreturnfunc" specified with
* the value passed to quit as the first argument. Quit will then
* set the final return code to be used when exit() is called based
* on the contents of these global variables:
* - admnflag - != 0 if any pkgop admin setting failed (4)
* - doreboot - != 0 if reboot required after installation
* - failflag - != 0 if fatal error has occurred (1)
* - intrflag - != 0 if user selected quit (3)
* - ireboot - != 0 if immediate reboot required
* - nullflag - != 0 if admin interaction required (5)
* - warnflag - != 0 if non-fatal error has occurred (2)
*/
void
quitSetCkreturnFunc(ckreturnFunc_t *a_ckreturnFunc)
{
ckreturnFunc = a_ckreturnFunc;
}
/*
* Name: quitSetZonelist
* Description: set the list of zones that are "locked" so that the zones can
* be unlocked if quit() is called to exit
* Arguments: a_zlst - list of zones that are "locked"
* Returns: void
* NOTE: When quit() is called, if this list is set, then z_unlock_zones
* is called to unlock all of the zones in the list. If this list
* is NOT set, then z_unlock_this_zone is called to unlock this
* zone.
*/
void
quitSetZonelist(zoneList_t a_zlst)
{
zoneList = a_zlst;
}
/*
* Name: quitSetZoneName
* Description: set the zone name the program is running in
* Arguments: a_zoneName - pointer to string representing the name of the zone
* that the program is running in
* Returns: void
*/
/* ARGSUSED */
void
quitSetZoneName(char *a_zoneName)
{
}
/*
* Name: quitSetZoneTmpdir
* Description: set the path to the "zone temporary directory" in use
* Arguments: a_zoneTempDir - pointer to string representing the full path to
* the temporary directory used to hold files used during
* zone operations
* Returns: void
* NOTE: If a zone temporary directory is set when quit() is called, the
* directory is recursively removed before quit() calls exit
*/
void
quitSetZoneTmpdir(char *a_zoneTempDir)
{
zoneTempDir = a_zoneTempDir;
}
/*
* Name: quit
* Description: cleanup and exit
* Arguments: a_retcode - the code to use to determine final exit status;
* if this is NOT "99" and if a "ckreturnFunc" is
* set, then that function is called with a_retcode
* to set the final exit status.
* Valid values are:
* 0 - success
* 1 - package operation failed (fatal error)
* 2 - non-fatal error (warning)
* 3 - user selected quit (operation interrupted)
* 4 - admin settings prevented operation
* 5 - interaction required and -n (non-interactive) specified
* "10" is added to indicate "immediate reboot required"
* "20" is be added to indicate "reboot after install required"
* 99 - do not interpret the code - just exit "99"
* Returns: <<this function does not return - calls exit()>>
*/
void
quit(int retcode)
{
/* disable interrupts */
(void) signal(SIGINT, SIG_IGN);
(void) signal(SIGHUP, SIG_IGN);
if (!(restore_local_fs())) {
progerr(ERR_CANNOT_RESTORE_LOCAL_FS);
}
/* process return code if not quit(99) */
if (retcode != 99) {
if (ckreturnFunc != (ckreturnFunc_t *)NULL) {
(ckreturnFunc)(retcode);
}
if (failflag) {
retcode = 1;
} else if (warnflag) {
retcode = 2;
} else if (intrflag) {
retcode = 3;
} else if (admnflag) {
retcode = 4;
} else if (nullflag) {
retcode = 5;
} else {
retcode = 0;
}
if (ireboot) {
retcode += 20;
}
if (doreboot) {
retcode += 10;
}
}
if (doreboot || ireboot) {
ptext(stderr, gettext(MSG_REBOOT));
}
if (pkgdev.mount) {
(void) chdir("/");
(void) pkgumount(&pkgdev);
}
/* if set remove zone temporary directory */
if (zoneTempDir != (char *)NULL) {
echoDebug(DBG_REMOVING_ZONE_TMPDIR, zoneTempDir);
(void) rrmdir(zoneTempDir);
zoneTempDir = (char *)NULL;
}
/*
* issue final exit message depending on number of packages left
* to process
*/
if (npkgs == 1) {
echo(MSG_1_PKG_NOT_PROCESSED);
} else if (npkgs) {
echo(MSG_N_PKGS_NOT_PROCESSED, npkgs);
}
/* if a zone list exists, unlock all zones */
if (zoneList != (zoneList_t)NULL) {
(void) z_unlock_zones(zoneList, ZLOCKS_ALL);
} else {
(void) z_unlock_this_zone(ZLOCKS_ALL);
}
/* final exit debugging message */
echoDebug(DBG_EXIT_WITH_CODE, retcode);
exit(retcode);
/* NOTREACHED */
}
/*
* *****************************************************************************
* static internal (private) functions
* *****************************************************************************
*/
/*
* Name: trap
* Description: signal handler connected via quitGetTrapHandler()
* Arguments: signo - [RO, *RO] - (int)
* Integer representing the signal that caused the trap
* to this function to occur
* Returns: << NONE >>
* NOTE: This function exits the program after doing mandatory cleanup.
* NOTE: Even though quit() should NOT return, there is a call to _exit()
* put after each call to quit() just in case quit() ever returned
* by mistake.
*/
static void
trap(int signo)
{
/* prevent reentrance */
if (trapEntered++ != 0) {
return;
}
if ((signo == SIGINT) || (signo == SIGHUP)) {
quit(3);
_exit(3);
}
quit(1);
_exit(1);
}