*
* @APPLE_LICENSE_HEADER_START@
*
- * Copyright (c) 1999-2003 Apple Computer, Inc. All Rights Reserved.
+ * 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. 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
+ * This 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, QUIET ENJOYMENT OR NON-INFRINGEMENT.
- * Please see the License for the specific language governing rights and
- * limitations under the License.
+ * 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@
*/
#include <sys/param.h>
#include <sys/systm.h>
-#include <sys/buf.h>
#include <sys/ioctl.h>
#include <sys/tty.h>
#include <sys/conf.h>
-#include <sys/proc.h>
+#include <sys/kauth.h>
+#include <sys/ucred.h>
+#include <sys/proc_internal.h>
#include <sys/user.h>
#include <kern/task.h>
#include <kern/thread.h>
-#include <kern/thread_act.h>
#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 number of bytes copied is always returned in lencopied.
*/
int
-copyoutstr(from, to, maxlen, lencopied)
- void * from, * to;
- size_t maxlen, *lencopied;
+copyoutstr(const void *from, user_addr_t to, size_t maxlen, size_t *lencopied)
{
- int slen,len,error=0;
+ size_t slen;
+ size_t len;
+ int error = 0;
slen = strlen(from) + 1;
+ if (slen > maxlen)
+ error = ENAMETOOLONG;
len = min(maxlen,slen);
if (copyout(from, to, len))
- error = EIO;
+ error = EFAULT;
*lencopied = len;
return error;
*/
/* from ppc/fault_copy.c -Titan1T4 VERSION */
int
-copystr(vfrom, vto, maxlen, lencopied)
- register void * vfrom, *vto;
- size_t maxlen, *lencopied;
+copystr(const void *vfrom, void *vto, size_t maxlen, size_t *lencopied)
{
- register unsigned l;
- int error;
-caddr_t from, to;
-
- from = vfrom;
- to = vto;
- for (l = 0; l < maxlen; l++)
- if ((*to++ = *from++) == '\0') {
- if (lencopied)
- *lencopied = l + 1;
- return 0;
- }
- if (lencopied)
- *lencopied = maxlen;
- return ENAMETOOLONG;
+ 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)
+ *lencopied = l + 1;
+ return 0;
+ }
+ }
+ if (lencopied)
+ *lencopied = maxlen;
+ return ENAMETOOLONG;
}
-int copywithin(src, dst, count)
-void * src, *dst;
-size_t count;
+int
+copywithin(void *src, void *dst, size_t count)
{
bcopy(src,dst,count);
return 0;
}
-cpu_number() {return(0);}
-
-set_bsduthreadargs(thread_t th, void * pcb, void *ignored_arg)
-{
-struct uthread * ut;
-
- ut = get_bsdthread_info(th);
- ut->uu_ar0 = (int *)pcb;
-
- return(1);
+/*
+ * 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)
{
-struct uthread *ut;
+ void *arg_ptr;
+ struct uthread *ut;
+
ut = get_bsdthread_info(th);
- return((void *)(ut->uu_arg));
+
+ 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_act_t th)
+get_bsduthreadrval(thread_t th)
{
-struct uthread *ut;
+ struct uthread *ut;
+
ut = get_bsdthread_info(th);
return(&ut->uu_rval[0]);
}
projects / apple / xnu.git / blobdiff