/*
* Copyright (c) 1999-2004 Apple Computer, Inc. All rights reserved.
*
- * @APPLE_LICENSE_HEADER_START@
+ * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
*
- * The contents of this file constitute Original Code as defined in and
- * are subject to the Apple Public Source License Version 1.1 (the
- * "License"). You may not use this file except in compliance with the
- * License. Please obtain a copy of the License at
- * http://www.apple.com/publicsource and read it before using this file.
+ * This file contains Original Code and/or Modifications of Original Code
+ * as defined in and that are subject to the Apple Public Source License
+ * Version 2.0 (the 'License'). You may not use this file except in
+ * compliance with the License. The rights granted to you under the License
+ * may not be used to create, or enable the creation or redistribution of,
+ * unlawful or unlicensed copies of an Apple operating system, or to
+ * circumvent, violate, or enable the circumvention or violation of, any
+ * terms of an Apple operating system software license agreement.
*
- * This Original Code and all software distributed under the License are
- * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
+ * Please obtain a copy of the License at
+ * http://www.opensource.apple.com/apsl/ and read it before using this file.
+ *
+ * The Original Code and all software distributed under the License are
+ * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
* EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
* INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT. Please see the
- * License for the specific language governing rights and limitations
- * under the License.
+ * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
+ * Please see the License for the specific language governing rights and
+ * limitations under the License.
*
- * @APPLE_LICENSE_HEADER_END@
+ * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
*/
/*
static lck_grp_t *ctl_lck_grp = 0;
static lck_mtx_t *ctl_mtx;
-/*
- * internal structure maintained for each register controller
- */
-
-struct ctl_cb;
-
-struct kctl
-{
- TAILQ_ENTRY(kctl) next; /* controller chain */
-
- /* controller information provided when registering */
- char name[MAX_KCTL_NAME]; /* unique nke identifier, provided by DTS */
- u_int32_t id;
- u_int32_t reg_unit;
-
- /* misc communication information */
- u_int32_t flags; /* support flags */
- u_int32_t recvbufsize; /* request more than the default buffer size */
- u_int32_t sendbufsize; /* request more than the default buffer size */
-
- /* Dispatch functions */
- ctl_connect_func connect; /* Make contact */
- ctl_disconnect_func disconnect; /* Break contact */
- ctl_send_func send; /* Send data to nke */
- ctl_setopt_func setopt; /* set kctl configuration */
- ctl_getopt_func getopt; /* get kctl configuration */
-
- TAILQ_HEAD(, ctl_cb) kcb_head;
- u_int32_t lastunit;
-};
-
-struct ctl_cb {
- TAILQ_ENTRY(ctl_cb) next; /* controller chain */
- lck_mtx_t *mtx;
- struct socket *so; /* controlling socket */
- struct kctl *kctl; /* back pointer to controller */
- u_int32_t unit;
- void *userdata;
-};
/* all the controllers are chained */
TAILQ_HEAD(, kctl) ctl_head;
error = ENOMEM;
goto done;
}
- lck_grp_attr_setdefault(ctl_lck_grp_attr);
ctl_lck_grp = lck_grp_alloc_init("Kernel Control Protocol", ctl_lck_grp_attr);
if (ctl_lck_grp == 0) {
error = ENOMEM;
goto done;
}
- lck_attr_setdefault(ctl_lck_attr);
ctl_mtx = lck_mtx_alloc_init(ctl_lck_grp, ctl_lck_attr);
if (ctl_mtx == 0) {
ctl_lock(struct socket *so, int refcount, int lr)
{
int lr_saved;
-#ifdef __ppc__
- if (lr == 0) {
- __asm__ volatile("mflr %0" : "=r" (lr_saved));
- }
+ if (lr == 0)
+ lr_saved = (unsigned int) __builtin_return_address(0);
else lr_saved = lr;
-#endif
if (so->so_pcb) {
lck_mtx_lock(((struct ctl_cb *)so->so_pcb)->mtx);
if (refcount)
so->so_usecount++;
- so->reserved3 = (void *)lr_saved;
+
+ so->lock_lr[so->next_lock_lr] = (void *)lr_saved;
+ so->next_lock_lr = (so->next_lock_lr+1) % SO_LCKDBG_MAX;
return (0);
}
int lr_saved;
lck_mtx_t * mutex_held;
-#ifdef __ppc__
- if (lr == 0) {
- __asm__ volatile("mflr %0" : "=r" (lr_saved));
- }
+ if (lr == 0)
+ lr_saved = (unsigned int) __builtin_return_address(0);
else lr_saved = lr;
-#endif
#ifdef MORE_KCTLLOCK_DEBUG
printf("ctl_unlock: so=%x sopcb=%x lock=%x ref=%x lr=%x\n",
mutex_held = ((struct ctl_cb *)so->so_pcb)->mtx;
}
lck_mtx_assert(mutex_held, LCK_MTX_ASSERT_OWNED);
+ so->unlock_lr[so->next_unlock_lr] = (void *)lr_saved;
+ so->next_unlock_lr = (so->next_unlock_lr+1) % SO_LCKDBG_MAX;
lck_mtx_unlock(mutex_held);
- so->reserved4 = (void *)lr_saved;
if (so->so_usecount == 0)
ctl_sofreelastref(so);
projects / apple / xnu.git / blobdiff