xnu-792.18.15.tar.gz

[apple/xnu.git] / bsd / dev / ppc / systemcalls.c

diff --git a/bsd/dev/ppc/systemcalls.c b/bsd/dev/ppc/systemcalls.c
index 6234853061eea082cf7aef1b64c037466a9a75a9..39ae16682e889ad1b63fc547a63202bfcc6b797a 100644 (file)
--- a/bsd/dev/ppc/systemcalls.c
+++ b/bsd/dev/ppc/systemcalls.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2000-2004 Apple Computer, Inc. All rights reserved.
+ * Copyright (c) 2000-2005 Apple Computer, Inc. All rights reserved.
  *
  * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
  * 
@@ -122,16 +122,11 @@ unix_syscall(struct savearea      *regs)
        if (uthread->uu_ucred != proc->p_ucred &&
            (uthread->uu_flag & UT_SETUID) == 0) {
                kauth_cred_t old = uthread->uu_ucred;
-               proc_lock(proc);
-               uthread->uu_ucred = proc->p_ucred;
-               kauth_cred_ref(uthread->uu_ucred);
-               proc_unlock(proc);
-               if (old != NOCRED)
-                       kauth_cred_rele(old);
+               uthread->uu_ucred = kauth_cred_proc_ref(proc);
+               if (IS_VALID_CRED(old))
+                       kauth_cred_unref(&old);
        }
 
-       uthread->uu_ar0 = (int *)regs;
-
        callp = (code >= nsysent) ? &sysent[63] : &sysent[code];
 
        if (callp->sy_narg != 0) {
@@ -329,7 +324,6 @@ unix_syscall_return(int error)
        struct savearea                         *regs;
        unsigned short                          code;
        struct sysent                           *callp;
-       int funnel_type;
        unsigned int cancel_enable;
 
        thread_act = current_thread();
@@ -447,90 +441,9 @@ unix_syscall_return(int error)
        /* NOTREACHED */
 }
 
-/* 
- * Time of day and interval timer support.
- *
- * These routines provide the kernel entry points to get and set
- * the time-of-day and per-process interval timers.  Subroutines
- * here provide support for adding and subtracting timeval structures
- * and decrementing interval timers, optionally reloading the interval
- * timers when they expire.
- */
-/*  NOTE THIS implementation is for  ppc architectures only.
- *  It is infrequently called, since the commpage intercepts
- *  most calls in user mode.
- *
- * XXX Y2038 bug because of assumed return of 32 bit seconds value, and
- * XXX first parameter to clock_gettimeofday()
- */
-int
-ppc_gettimeofday(__unused struct proc *p, 
-                                register struct ppc_gettimeofday_args *uap, 
-                                register_t *retval)
-{
-       int error = 0;
-       extern lck_spin_t * tz_slock;
-
-       if (uap->tp)
-               clock_gettimeofday(&retval[0], &retval[1]);
-       
-       if (uap->tzp) {
-               struct timezone ltz;
-
-               lck_spin_lock(tz_slock);
-               ltz = tz;
-               lck_spin_unlock(tz_slock);
-               error = copyout((caddr_t)&ltz, uap->tzp, sizeof (tz));
-       }
-
-       return (error);
-}
-
 #ifdef JOE_DEBUG
 joe_debug(char *p) {
 
         printf("%s\n", p);
 }
 #endif
-
-
-/* 
- * 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;
-
-       if (new_ptrace == 0)
-               return(0);
-               
-       enter_funnel_section(kernel_flock);
-       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;
-       }
-       exit_funnel_section( );
-       
-       return((uintptr_t)old_ptrace);
-}
-
-void temp_unpatch_ptrace(void)
-{
-       struct sysent *         callp;
-               
-       enter_funnel_section(kernel_flock);
-       callp = &sysent[26];
-       callp->sy_call = (sy_call_t *) ptrace;
-       exit_funnel_section( );
-       
-       return;
-}