xnu-1228.tar.gz

[apple/xnu.git] / bsd / sys / resourcevar.h

diff --git a/bsd/sys/resourcevar.h b/bsd/sys/resourcevar.h
index 8593ed6ef2d5e07bef1d01675caadbe0b1f26b7c..588847dc88bd5578fa78cea40bb681518a795c88 100644 (file)
--- a/bsd/sys/resourcevar.h
+++ b/bsd/sys/resourcevar.h
@@ -1,23 +1,29 @@
 /*
  * Copyright (c) 2000-2002 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@
  */
 /* Copyright (c) 1995, 1997 Apple Computer, Inc. All Rights Reserved */
 /*
@@ -60,7 +66,6 @@
 
 #include <sys/appleapiopts.h>
 
-#ifdef __APPLE_API_PRIVATE
 /*
  * Kernel per-process accounting / statistics
  * (not necessarily resident except when running).
@@ -68,7 +73,7 @@
 struct pstats {
 #define        pstat_startzero p_ru
        struct  rusage p_ru;            /* stats for this proc */
-       struct  rusage p_cru;           /* sum of stats for reaped children */
+       struct  rusage p_cru;           /* (PL) sum of stats for reaped children */
 
        struct uprof {                  /* profile arguments */
                struct uprof *pr_next;  /* multiple prof buffers allowed */
@@ -79,12 +84,9 @@ struct pstats {
                u_long  pr_addr;        /* temp storage for addr until AST */
                u_long  pr_ticks;       /* temp storage for ticks until AST */
        } p_prof;
-#define        pstat_endzero   pstat_startcopy
+#define        pstat_endzero   p_start
 
-#define        pstat_startcopy p_timer
-       struct  itimerval p_timer[3];   /* virtual-time timers */
-#define        pstat_endcopy   p_start
-       struct  timeval p_start;        /* starting time */
+       struct  timeval p_start;        /* starting time ; compat only */
 #ifdef KERNEL
        struct user_uprof {                         /* profile arguments */
                struct user_uprof *pr_next;  /* multiple prof buffers allowed */
@@ -106,11 +108,14 @@ struct pstats {
  * and a copy must be made for the child of a new fork that isn't
  * sharing modifications to the limits.
  */
+/* 
+ * Modifications are done with the list lock held (p_limit as well)and access indv 
+ * limits can be done without limit as we keep the old copy in p_olimit. Which is 
+ * dropped in proc_exit. This way all access will have a valid kernel address
+ */
 struct plimit {
        struct  rlimit pl_rlimit[RLIM_NLIMITS];
-#define        PL_SHAREMOD     0x01            /* modifications are shared */
-       int     p_lflags;
-       int     p_refcnt;               /* number of references */
+       int     pl_refcnt;              /* number of references */
 };
 
 #ifdef KERNEL
@@ -127,9 +132,13 @@ void        addupc_task(struct proc *p, user_addr_t pc, u_int ticks);
 void    calcru(struct proc *p, struct timeval *up, struct timeval *sp,
            struct timeval *ip);
 void    ruadd(struct rusage *ru, struct rusage *ru2);
-struct plimit *limcopy(struct plimit *lim);
+void proc_limitget(proc_t p, int whichi, struct rlimit * limp);
+void proc_limitdrop(proc_t p, int exiting);
+void proc_limitfork(proc_t parent, proc_t child);
+int proc_limitreplace(proc_t p);
+void proc_limitblock(proc_t);
+void proc_limitunblock(proc_t);
 #endif /* KERNEL */
 
-#endif /* __APPLE_API_PRIVATE */
 
 #endif /* !_SYS_RESOURCEVAR_H_ */