/*
- * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
+ * Copyright (c) 2000-2006 Apple Computer, Inc. All rights reserved.
*
- * @APPLE_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 Original Code and all software distributed under the License are
- * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
+ * @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. 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
* 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.
- *
- * @APPLE_LICENSE_HEADER_END@
+ * 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_OSREFERENCE_LICENSE_HEADER_END@
*/
/*
* Copyright (c) 1997 by Apple Computer, Inc., all rights reserved
#include <vm/vm_map.h>
#include <machine/machine_routines.h>
-/* XXX should be elsewhere (cpeak) */
-extern struct proc *i386_current_proc(void);
-extern void *get_bsduthreadarg(thread_t);
-extern int *get_bsduthreadrval(thread_t);
-extern void *find_user_regs(thread_t);
-
-/*
+/*
* copy a null terminated string from the kernel address space into
* the user address space.
* - if the user is denied write access, return EFAULT.
int
copyoutstr(const void *from, user_addr_t to, size_t maxlen, size_t *lencopied)
{
- size_t slen;
- size_t len;
- int error = 0;
+ size_t slen;
+ size_t len;
+ int error = 0;
slen = strlen(from) + 1;
- if (slen > maxlen)
+ if (slen > maxlen) {
error = ENAMETOOLONG;
+ }
- len = min(maxlen,slen);
- if (copyout(from, to, len))
+ len = min(maxlen, slen);
+ if (copyout(from, to, len)) {
error = EFAULT;
+ }
*lencopied = len;
return error;
}
-/*
- * copy a null terminated string from one point to another in
+/*
+ * copy a null terminated string from one point to another in
* the kernel address space.
* - no access checks are performed.
* - if the end of string isn't found before
int
copystr(const void *vfrom, void *vto, size_t maxlen, size_t *lencopied)
{
- size_t l;
- char const *from = (char const *) vfrom;
- char *to = (char *) vto;
+ size_t l;
+ char const *from = (char const *) vfrom;
+ char *to = (char *) vto;
for (l = 0; l < maxlen; l++) {
if ((*to++ = *from++) == '\0') {
- if (lencopied)
+ if (lencopied) {
*lencopied = l + 1;
+ }
return 0;
}
}
- if (lencopied)
+ if (lencopied) {
*lencopied = maxlen;
+ }
return ENAMETOOLONG;
}
int
copywithin(void *src, void *dst, size_t count)
{
- bcopy(src,dst,count);
+ bcopy(src, dst, count);
return 0;
}
-
-/*
- * This is just current_proc() from bsd/kern/bsd_stubs.c, but instead of
- * returning kernproc in the non-vfork() case, it can return NULL. This is
- * needed because the system call entry point is in osfmk/i386/bsd_i386.c
- * instead of bsd/dev/i386, and therefore cannot see some BSD thread
- * internals. We need to distinguish kernproc defaulting in the vfork and
- * non-vfork cases vs. actually being the real process context.
- */
-struct proc *
-i386_current_proc(void)
-{
- struct uthread * ut;
- struct proc *p;
- thread_t thr_act = current_thread();
-
- ut = (struct uthread *)get_bsdthread_info(thr_act);
- if (ut && (ut->uu_flag & UT_VFORK)) {
- if (ut->uu_proc) {
- p = ut->uu_proc;
- if ((p->p_flag & P_INVFORK) == 0)
- panic("returning child proc not under vfork");
- if (p->p_vforkact != (void *)thr_act)
- panic("returning child proc which is not cur_act");
- return(p);
- } else {
- return (kernproc);
- }
- }
-
- /* Not in vfork - may return NULL */
- p = (struct proc *)get_bsdtask_info(current_task());
-
- return (p);
-}
-
-void *
-get_bsduthreadarg(thread_t th)
-{
- void *arg_ptr;
- struct uthread *ut;
-
- ut = get_bsdthread_info(th);
-
- if (ml_thread_is64bit(th) == TRUE)
- arg_ptr = (void *)saved_state64(find_user_regs(th));
- else
- arg_ptr = (void *)(ut->uu_arg);
-
- return(arg_ptr);
-}
-
-int *
-get_bsduthreadrval(thread_t th)
-{
- struct uthread *ut;
-
- ut = get_bsdthread_info(th);
- return(&ut->uu_rval[0]);
-}
projects / apple / xnu.git / blobdiff