diff options
Diffstat (limited to 'usr/src/uts/common/avs/ns/solaris/nskernd.c')
| -rw-r--r-- | usr/src/uts/common/avs/ns/solaris/nskernd.c | 298 |
1 files changed, 0 insertions, 298 deletions
diff --git a/usr/src/uts/common/avs/ns/solaris/nskernd.c b/usr/src/uts/common/avs/ns/solaris/nskernd.c deleted file mode 100644 index e050bc917f..0000000000 --- a/usr/src/uts/common/avs/ns/solaris/nskernd.c +++ /dev/null @@ -1,298 +0,0 @@ -/* - * 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 2008 Sun Microsystems, Inc. All rights reserved. - * Use is subject to license terms. - */ - -#include <sys/types.h> -#include <sys/ksynch.h> -#include <sys/errno.h> -#include <sys/ddi.h> -#include <sys/sunddi.h> - -#include "../nsctl.h" -#include "../nsctl/nsc_ioctl.h" -#include "nskernd.h" - -void *proc_nskernd; -int nskernd_iscluster; - -static kmutex_t nskernd_lock; - -static kcondvar_t nskernd_ask_cv; -static kcondvar_t nskernd_k_cv; -static kcondvar_t nskernd_u_cv; - -static volatile int nskernd_k_wait; -static volatile int nskernd_u_wait; - -static int nskernd_norun; - -static volatile int nskernd_ask; -static struct nskernd nskernd_kdata; - -void -nskernd_init(void) -{ - mutex_init(&nskernd_lock, NULL, MUTEX_DRIVER, NULL); - cv_init(&nskernd_ask_cv, NULL, CV_DRIVER, NULL); - cv_init(&nskernd_k_cv, NULL, CV_DRIVER, NULL); - cv_init(&nskernd_u_cv, NULL, CV_DRIVER, NULL); - - nskernd_norun = 0; -} - - -void -nskernd_deinit(void) -{ - mutex_destroy(&nskernd_lock); - cv_destroy(&nskernd_ask_cv); - cv_destroy(&nskernd_k_cv); - cv_destroy(&nskernd_u_cv); -} - - -static int -nskernd_start(const int iscluster) -{ - int rc = 0; - - mutex_enter(&nskernd_lock); - - if (proc_nskernd != NULL) { - rc = 1; - } else if (nskernd_norun != 0) { - rc = 2; - } else { - (void) drv_getparm(UPROCP, (void *)&proc_nskernd); - nskernd_iscluster = iscluster; - } - - mutex_exit(&nskernd_lock); - - return (rc); -} - - -/* - * must be called with nskernd_lock held. - */ -void -nskernd_cleanup(void) -{ - proc_nskernd = NULL; - cv_broadcast(&nskernd_ask_cv); - cv_broadcast(&nskernd_k_cv); -} - - -void -nskernd_stop(void) -{ - mutex_enter(&nskernd_lock); - - if (proc_nskernd == NULL) { - nskernd_norun = 1; - mutex_exit(&nskernd_lock); - return; - } - - while (nskernd_u_wait == 0) { - nskernd_k_wait++; - cv_wait(&nskernd_k_cv, &nskernd_lock); - nskernd_k_wait--; - - if (proc_nskernd == NULL) { - mutex_exit(&nskernd_lock); - return; - } - } - - nskernd_kdata.command = NSKERND_STOP; - nskernd_kdata.data1 = (uint64_t)1; /* kernel has done cleanup */ - - nskernd_cleanup(); - - cv_signal(&nskernd_u_cv); - mutex_exit(&nskernd_lock); -} - - -int -nskernd_get(struct nskernd *nskp) -{ - mutex_enter(&nskernd_lock); - - if (proc_nskernd == NULL) { - mutex_exit(&nskernd_lock); - return (ENXIO); - } - - while (nskernd_u_wait == 0 || nskernd_ask) { - nskernd_k_wait++; - cv_wait(&nskernd_k_cv, &nskernd_lock); - nskernd_k_wait--; - - if (proc_nskernd == NULL) { - mutex_exit(&nskernd_lock); - return (ENXIO); - } - } - - bcopy(nskp, &nskernd_kdata, sizeof (*nskp)); - nskernd_ask++; - - cv_signal(&nskernd_u_cv); - - cv_wait(&nskernd_ask_cv, &nskernd_lock); - - if (proc_nskernd == NULL) { - nskernd_ask--; - mutex_exit(&nskernd_lock); - return (ENXIO); - } - - bcopy(&nskernd_kdata, nskp, sizeof (*nskp)); - nskernd_ask--; - - if (nskernd_k_wait > 0) - cv_signal(&nskernd_k_cv); - - mutex_exit(&nskernd_lock); - return (0); -} - - -int -nskernd_command(intptr_t arg, int mode, int *rvalp) -{ - struct nskernd *udata = NULL; - uint64_t arg1, arg2; - int rc; - - *rvalp = 0; - rc = 0; - - udata = kmem_alloc(sizeof (*udata), KM_SLEEP); - if (ddi_copyin((void *)arg, udata, sizeof (*udata), mode) < 0) { - kmem_free(udata, sizeof (*udata)); - return (EFAULT); - } - - switch (udata->command) { - case NSKERND_START: /* User program start */ - *rvalp = nskernd_start(udata->data1); - break; - - case NSKERND_STOP: /* User program requesting stop */ - mutex_enter(&nskernd_lock); - nskernd_cleanup(); - mutex_exit(&nskernd_lock); - break; - - case NSKERND_WAIT: - mutex_enter(&nskernd_lock); - - bcopy(udata, &nskernd_kdata, sizeof (*udata)); - - if (nskernd_ask > 0) - cv_signal(&nskernd_ask_cv); - - nskernd_u_wait++; - - if (cv_wait_sig(&nskernd_u_cv, &nskernd_lock) != 0) { - /* - * woken by cv_signal() or cv_broadcast() - */ - bcopy(&nskernd_kdata, udata, sizeof (*udata)); - } else { - /* - * signal - the user process has blocked all - * signals except for SIGTERM and the - * uncatchables, so the process is about to die - * and we need to clean up. - */ - udata->command = NSKERND_STOP; - udata->data1 = (uint64_t)1; /* cleanup done */ - - nskernd_cleanup(); - } - - nskernd_u_wait--; - - mutex_exit(&nskernd_lock); - - if (ddi_copyout(udata, (void *)arg, - sizeof (*udata), mode) < 0) { - rc = EFAULT; - break; - } - - break; - - case NSKERND_NEWLWP: - /* save kmem by freeing the udata structure */ - arg1 = udata->data1; - kmem_free(udata, sizeof (*udata)); - udata = NULL; - nsc_runlwp(arg1); - break; - - case NSKERND_LOCK: - /* save kmem by freeing the udata structure */ - arg1 = udata->data1; - arg2 = udata->data2; - kmem_free(udata, sizeof (*udata)); - udata = NULL; - nsc_lockchild(arg1, arg2); - break; - - default: - cmn_err(CE_WARN, "nskernd: unknown command %d", udata->command); - rc = EINVAL; - break; - } - - if (udata != NULL) { - kmem_free(udata, sizeof (*udata)); - udata = NULL; - } - - return (rc); -} - -/* - * This function is included for SV ioctl processing only. - */ - -int -nskernd_isdaemon(void) -{ - void *this_proc; - - if (proc_nskernd == NULL) - return (0); - if (drv_getparm(UPROCP, (void *)&this_proc) != 0) - return (0); - return (proc_nskernd == this_proc); -} |