/*
* Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
*
- * @APPLE_LICENSE_HEADER_START@
- *
- * Copyright (c) 1999-2003 Apple Computer, Inc. All Rights Reserved.
+ * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
*
* 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. Please obtain a copy of the License at
- * http://www.opensource.apple.com/apsl/ and read it before using this
- * file.
+ * 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.
+ *
+ * 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
* 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 <vm/vm_map.h>
#include <sys/systm.h>
#include <sys/conf.h>
+#include <sys/proc_internal.h>
#include <sys/buf.h> /* for SET */
#include <sys/user.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;
+vm_offset_t
kmem_mb_alloc(vm_map_t mbmap, int size)
{
vm_offset_t addr;
if (kernel_memory_allocate(mbmap, &addr, size,
0,
- KMA_NOPAGEWAIT|KMA_KOBJECT) == KERN_SUCCESS)
- return((void *)addr);
+ KMA_NOPAGEWAIT|KMA_KOBJECT|KMA_LOMEM) == KERN_SUCCESS)
+ return(addr);
else
return(0);
}
-pcb_synch() {}
+/*
+ * XXX this function only exists to be exported and do nothing.
+ */
+void
+pcb_synch(void)
+{
+}
struct proc *
current_proc(void)
/* Never returns a NULL */
struct uthread * ut;
struct proc *p;
- thread_act_t thr_act = current_act();
+ thread_t thread = current_thread();
- ut = (struct uthread *)get_bsdthread_info(thr_act);
- if (ut && (ut->uu_flag & P_VFORK) && ut->uu_proc) {
+ 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;
/*
sizeof(struct bdevsw)) == 0)
break;
}
+ } else {
+ /* NB: Not used below unless index is in range */
+ devsw = &bdevsw[index];
}
if ((index < 0) || (index >= nblkdev) ||
struct bdevsw *devsw;
if (index == -1) {
- devsw = bdevsw;
+ devsw = &bdevsw[1]; /* Start at slot 1 - this is a hack to fix the index=1 hack */
/* yes, start at 1 to avoid collision with volfs (Radar 2842228) */
for(index=1; index < nblkdev; index++, devsw++) {
if(memcmp((char *)devsw,
* 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)) {
+ if (PE_parse_boot_argn("-s", namep, sizeof(namep))) {
return(1);
} else {
return(0);
}
}
-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;
}
projects / apple / xnu.git / blobdiff