/*
* Copyright (c) 2000 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@
*/
#include <sys/time.h>
#include <kern/task.h>
#include <sys/sysent.h>
#include <sys/sysproto.h>
+/* XXX these should be in a common header somwhere, but aren't */
+extern int chrtoblk_set(int, int);
+extern vm_offset_t kmem_mb_alloc(vm_map_t, int);
+
+/* XXX most of these just exist to export; there's no good header for them*/
+void pcb_synch(void);
+int issingleuser(void);
+void tbeproc(void *);
+
+
/* Just to satisfy pstat command */
int dmmin, dmmax, dmtext;
/* Never returns a NULL */
struct uthread * ut;
struct proc *p;
- thread_t thr_act = current_thread();
+ thread_t thread = current_thread();
- ut = (struct uthread *)get_bsdthread_info(thr_act);
+ ut = (struct uthread *)get_bsdthread_info(thread);
if (ut && (ut->uu_flag & UT_VFORK) && ut->uu_proc) {
p = ut->uu_proc;
- if ((p->p_flag & P_INVFORK) == 0)
+ if ((p->p_lflag & P_LINVFORK) == 0)
panic("returning child proc not under vfork");
- if (p->p_vforkact != (void *)thr_act)
+ if (p->p_vforkact != (void *)thread)
panic("returning child proc which is not cur_act");
return(p);
}
/* Device switch add delete routines */
-extern int nblkdev, nchrdev;
-
struct bdevsw nobdev = NO_BDEVICE;
struct cdevsw nocdev = NO_CDEVICE;
/*
* if index is -1, find a free slot to add
* else see whether the slot is free
* return the major number that is used else -1
+ *
+ * NOTE: In practice, -1 is unusable, since there are kernel internal
+ * devices that call this function with absolute index values,
+ * which will stomp on free-slot based assignments that happen
+ * before them. Therefore, if index is negative, we start
+ * looking for a free slot at the absolute value of index,
+ * instead of starting at 0 (lets out slot 1, but that's one
+ * of the problem slots down low - the vndevice). -12 is
+ * currently a safe starting point.
*/
int
cdevsw_add(int index, struct cdevsw * csw)
{
struct cdevsw *devsw;
- if (index == -1) {
- devsw = cdevsw;
- for(index=0; index < nchrdev; index++, devsw++) {
+ if (index < 0) {
+ if (index == -1)
+ index = 0; /* historical behaviour; XXX broken */
+ else
+ index = -index; /* start at least this far up in the table */
+ devsw = &cdevsw[index];
+ for(; index < nchrdev; index++, devsw++) {
if(memcmp((char *)devsw,
(char *)&nocdev,
sizeof(struct cdevsw)) == 0)
static int
cdev_set_bdev(int cdev, int bdev)
{
- extern int chrtoblk_add(int cdev, int bdev);
-
return (chrtoblk_set(cdev, bdev));
}
return (index);
}
+#include <pexpert/pexpert.h> /* for PE_parse_boot_arg */
+
+/*
+ * Notes: This function is used solely by UFS, apparently in an effort
+ * to work around an issue with single user mounts.
+ *
+ * It's not technically correct to reference PE_parse_boot_arg()
+ * from this file.
+ */
+int
issingleuser(void)
{
char namep[16];
-
if (PE_parse_boot_arg("-s", namep)) {
return(1);
} else {
}
}
-void *
+void
tbeproc(void *procp)
{
struct proc *p = procp;
if (p)
- SET(p->p_flag, P_TBE);
+ OSBitOrAtomic(P_TBE, (UInt32 *)&p->p_flag);
return;
}
-
-/*
- * WARNING - this is a temporary workaround for binary compatibility issues
- * with anti-piracy software that relies on patching ptrace (3928003).
- * This KPI will be removed in the system release after Tiger.
- */
-uintptr_t temp_patch_ptrace(uintptr_t new_ptrace)
-{
- struct sysent * callp;
- sy_call_t * old_ptrace;
-#ifndef __ppc__
- boolean_t funnel_state;
-#endif
-
- if (new_ptrace == 0)
- return(0);
-
-#ifdef __ppc__
- enter_funnel_section(kernel_flock);
-#else
- funnel_state = thread_funnel_set(kernel_flock, TRUE);
-#endif
- callp = &sysent[26];
- old_ptrace = callp->sy_call;
-
- /* only allow one patcher of ptrace */
- if (old_ptrace == (sy_call_t *) ptrace) {
- callp->sy_call = (sy_call_t *) new_ptrace;
- }
- else {
- old_ptrace = NULL;
- }
-#ifdef __ppc__
- exit_funnel_section( );
-#else
- (void)thread_funnel_set(kernel_flock, funnel_state);
-#endif
-
- return((uintptr_t)old_ptrace);
-}
-
-void temp_unpatch_ptrace(void)
-{
- struct sysent * callp;
-#ifndef __ppc__
- boolean_t funnel_state;
-#endif
-
-#ifdef __ppc__
- enter_funnel_section(kernel_flock);
-#else
- funnel_state = thread_funnel_set(kernel_flock, TRUE);
-#endif
- callp = &sysent[26];
- callp->sy_call = (sy_call_t *) ptrace;
-#ifdef __ppc__
- exit_funnel_section( );
-#else
- (void)thread_funnel_set(kernel_flock, funnel_state);
-#endif
-
- return;
-}
projects / apple / xnu.git / blobdiff