xnu-4570.71.2.tar.gz

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

diff --git a/bsd/sys/systm.h b/bsd/sys/systm.h
index 5ef1bc2d570750888f4e6c9f3fd4f93d163bb1bc..98dc4dd529f619835e46739441b8dff108ff271b 100644 (file)
--- a/bsd/sys/systm.h
+++ b/bsd/sys/systm.h
@@ -1,31 +1,29 @@
 /*
 /*

- * Copyright (c) 2006 Apple Computer, Inc. All Rights Reserved.
+ * Copyright (c) 2000-2007 Apple Inc. All rights reserved.
+ *
+ * @APPLE_OSREFERENCE_LICENSE_HEADER_START@

  * 
  * 

- * @APPLE_LICENSE_OSREFERENCE_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.

  * 
  * 

- * 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, QUIET ENJOYMENT OR NON-INFRINGEMENT. 
- * Please see the License for the specific language governing rights and 
+ * 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, QUIET ENJOYMENT OR NON-INFRINGEMENT.
+ * Please see the License for the specific language governing rights and

  * limitations under the License.
  * limitations under the License.

- *
- * @APPLE_LICENSE_OSREFERENCE_HEADER_END@
+ * 
+ * @APPLE_OSREFERENCE_LICENSE_HEADER_END@

  */
 /* Copyright (c) 1995 NeXT Computer, Inc. All Rights Reserved */
 /*-
  */
 /* Copyright (c) 1995 NeXT Computer, Inc. All Rights Reserved */
 /*-


@@ -108,7 +106,6 @@
 #ifdef BSD_KERNEL_PRIVATE
 #include <sys/tty.h>
 #include <sys/vm.h>
 #ifdef BSD_KERNEL_PRIVATE
 #include <sys/tty.h>
 #include <sys/vm.h>

-#include <sys/linker_set.h>

 #endif
 #include <sys/proc.h>
 __BEGIN_DECLS
 #endif
 #include <sys/proc.h>
 __BEGIN_DECLS


@@ -120,25 +117,26 @@ __BEGIN_DECLS
 __END_DECLS
 
 #ifdef BSD_KERNEL_PRIVATE
 __END_DECLS
 
 #ifdef BSD_KERNEL_PRIVATE

-extern char version[];         /* system version */
-extern char copyright[];       /* system copyright */
+extern char version[];                 /* system version */
+extern const char copyright[];         /* system copyright */

 
 
 extern int     boothowto;      /* reboot flags, from console subsystem */
 extern int     show_space;
 
 
 extern int     boothowto;      /* reboot flags, from console subsystem */
 extern int     show_space;

+extern int     minimalboot;
+#if CONFIG_EMBEDDED
+extern int     darkboot;
+#endif

 
 

-extern int nblkdev;            /* number of entries in bdevsw */
-extern int nchrdev;            /* number of entries in cdevsw */
+extern const int nblkdev; /* number of entries in bdevsw */
+extern const int nchrdev; /* number of entries in cdevsw */

 #endif /* BSD_KERNEL_PRIVATE */
 
 #ifdef KERNEL_PRIVATE
 #endif /* BSD_KERNEL_PRIVATE */
 
 #ifdef KERNEL_PRIVATE

-#define NO_FUNNEL 0
-#define KERNEL_FUNNEL 1

 
 extern int securelevel;                /* system security level */
 extern dev_t rootdev;          /* root device */
 extern struct vnode *rootvp;   /* vnode equivalent to above */
 
 extern int securelevel;                /* system security level */
 extern dev_t rootdev;          /* root device */
 extern struct vnode *rootvp;   /* vnode equivalent to above */

-extern funnel_t * kernel_flock;

 
 #endif /* KERNEL_PRIVATE */
 
 
 #endif /* KERNEL_PRIVATE */
 


@@ -147,38 +145,64 @@ extern funnel_t * kernel_flock;
 
 #define getenv_int(a,b) (*b = 0)
 #define        KASSERT(exp,msg)
 
 #define getenv_int(a,b) (*b = 0)
 #define        KASSERT(exp,msg)

-

 /*
  * General function declarations.
  */
 __BEGIN_DECLS
 /*
  * General function declarations.
  */
 __BEGIN_DECLS

-int    nullop(void);
-int    nulldev(void);
-int    enoioctl(void);
-int    enxio(void);
-int    eopnotsupp(void);
-int    einval(void);

 
 #ifdef BSD_KERNEL_PRIVATE
 
 #ifdef BSD_KERNEL_PRIVATE

+int    einval(void);
+void   nullsys(void);
+int    errsys(void);

 int    seltrue(dev_t dev, int which, struct proc *p);
 int    seltrue(dev_t dev, int which, struct proc *p);

-void   ttyprintf(struct tty *, const char *, ...);
-void   realitexpire(void *);
+void   ttyprintf(struct tty *, const char *, ...) __printflike(2, 3);
+void   realitexpire(struct proc *);

 int    hzto(struct timeval *tv);
 int    hzto(struct timeval *tv);

-#endif /* __APPLE_API_UNSTABLE */
-
-void   *hashinit(int count, int type, u_long *hashmask);
-

 void   tablefull(const char *);
 void   tablefull(const char *);

-

 int    kvprintf(char const *, void (*)(int, void*), void *, int,
 int    kvprintf(char const *, void (*)(int, void*), void *, int,

-                     __darwin_va_list);
-
-void   uprintf(const char *, ...);
+                     __darwin_va_list) __printflike(1,0);
+void   uprintf(const char *, ...) __printflike(1,2);
+int    copywithin(void *saddr, void *daddr, size_t len);
+int64_t        fulong(user_addr_t addr);
+int    sulong(user_addr_t addr, int64_t longword);
+uint64_t fuulong(user_addr_t addr);
+int    suulong(user_addr_t addr, uint64_t ulongword);
+int    clone_system_shared_regions(int shared_regions_active,
+                                   int chain_regions,
+                                   int base_vnode);
+extern kern_return_t bsd_exception(int, mach_exception_data_t codes, int);
+extern void    bsdinit_task(void);
+extern void unix_syscall_return(int) __dead2;
+void   initclocks(void);
+void   startprofclock(struct proc *);
+void   stopprofclock(struct proc *);
+void   setstatclockrate(int hzrate);
+struct time_value;
+void   get_procrustime(struct time_value *tv);
+void   load_init_program(struct proc *p);
+void __pthread_testcancel(int presyscall);
+void throttle_info_get_last_io_time(mount_t mp, struct timeval *tv);
+void update_last_io_time(mount_t mp);
+void throttle_info_end_io(buf_t bp);
+#endif /* BSD_KERNEL_PRIVATE */

 
 

+#ifdef KERNEL_PRIVATE
+void   timeout(void (*)(void *), void *arg, int ticks);
+void   timeout_with_leeway(void (*)(void *), void *arg, int ticks, int leeway_ticks);
+void   untimeout(void (*)(void *), void *arg);
+int    bsd_hostname(char *, int, int*);
+int    vslock(user_addr_t addr, user_size_t len);
+int    vsunlock(user_addr_t addr, user_size_t len, int dirtied);
+#endif /* KERNEL_PRIVATE */

 
 

+int    nullop(void);
+int    nulldev(void);
+int    enoioctl(void);
+int    enosys(void);
+int    enxio(void);
+int    eopnotsupp(void);
+void   *hashinit(int count, int type, u_long *hashmask);

 void   ovbcopy(const void *from, void *to, size_t len);
 void   ovbcopy(const void *from, void *to, size_t len);

-int    copywithin(void *saddr, void *daddr, size_t len);
-

 int    fubyte(user_addr_t addr);
 int    fuibyte(user_addr_t addr);
 int    subyte(user_addr_t addr, int byte);
 int    fubyte(user_addr_t addr);
 int    fuibyte(user_addr_t addr);
 int    subyte(user_addr_t addr, int byte);


@@ -187,52 +211,64 @@ long   fuword(user_addr_t addr);
 long   fuiword(user_addr_t addr);
 int    suword(user_addr_t addr, long word);
 int    suiword(user_addr_t addr, long word);
 long   fuiword(user_addr_t addr);
 int    suword(user_addr_t addr, long word);
 int    suiword(user_addr_t addr, long word);

-int64_t        fulong(user_addr_t addr);
-int    sulong(user_addr_t addr, int64_t longword);
-uint64_t fuulong(user_addr_t addr);
-int    suulong(user_addr_t addr, uint64_t ulongword);

 #define fusize(_a)     ((user_size_t)fulong(_a))
 #define susize(_a, _s) sulong((_a), (_s))
 #define fuptr(a)       ((user_addr_t)fulong(_a)
 #define suptr(_a, _p)  sulong((_a), (_p))
 int    useracc(user_addr_t addr, user_size_t len,int prot);
 #define fusize(_a)     ((user_size_t)fulong(_a))
 #define susize(_a, _s) sulong((_a), (_s))
 #define fuptr(a)       ((user_addr_t)fulong(_a)
 #define suptr(_a, _p)  sulong((_a), (_p))
 int    useracc(user_addr_t addr, user_size_t len,int prot);

-

 typedef void (*timeout_fcn_t)(void *);
 typedef void (*timeout_fcn_t)(void *);

-#ifdef KERNEL_PRIVATE
-void   timeout(void (*)(void *), void *arg, int ticks);
-void   untimeout(void (*)(void *), void *arg);
-#endif /* KERNEL_PRIVATE */

 void   bsd_timeout(void (*)(void *), void *arg, struct timespec * ts);
 void   bsd_untimeout(void (*)(void *), void *arg);
 void   bsd_timeout(void (*)(void *), void *arg, struct timespec * ts);
 void   bsd_untimeout(void (*)(void *), void *arg);

-

 void   set_fsblocksize(struct vnode *);
 void   set_fsblocksize(struct vnode *);

+uint64_t tvtoabstime(struct timeval *);
+uint64_t tstoabstime(struct timespec *);
+void   *throttle_info_create(void);
+void   throttle_info_mount_ref(mount_t mp, void * throttle_info);
+void   throttle_info_mount_rel(mount_t mp);
+void   throttle_info_release(void *throttle_info);
+void   throttle_info_update(void *throttle_info, int flags);
+uint32_t throttle_lowpri_io(int sleep_amount);
+void   throttle_set_thread_io_policy(int policy);
+int            throttle_get_thread_effective_io_policy(void);
+
+typedef struct __throttle_info_handle *throttle_info_handle_t;
+int    throttle_info_ref_by_mask(uint64_t throttle_mask, throttle_info_handle_t *throttle_info_handle);
+void   throttle_info_rel_by_mask(throttle_info_handle_t throttle_info_handle);
+void   throttle_info_update_by_mask(void *throttle_info_handle, int flags);
+void   throttle_info_disable_throttle(int devno, boolean_t isfusion);
+/*
+ * 'throttle_info_handle' acquired via 'throttle_info_ref_by_mask'
+ * 'policy' should be specified as either IOPOL_UTILITY or IPOL_THROTTLE,
+ * all other values will be treated as IOPOL_NORMAL (i.e. no throttling)
+ */
+int    throttle_info_io_will_be_throttled(void *throttle_info_handle, int policy);

 
 

-#ifdef BSD_KERNEL_PRIVATE
-int    vslock(user_addr_t addr, user_size_t len);
-int    vsunlock(user_addr_t addr, user_size_t len, int dirtied);
-int    clone_system_shared_regions(int shared_regions_active,
-                                   int chain_regions,
-                                   int base_vnode);
+#ifdef KERNEL_PRIVATE

 
 

-extern kern_return_t bsd_exception(int, exception_data_type_t codes[], int);
-extern void    bsdinit_task(void);
-void   bsd_hardclock(boolean_t usermode, caddr_t pc, int numticks);
-void   gatherstats(boolean_t usermode, caddr_t pc);
+/* returned by throttle_io_will_be_throttled */
+#define THROTTLE_DISENGAGED    0
+#define THROTTLE_ENGAGED       1
+#define THROTTLE_NOW           2

 
 

-void   initclocks(void);
+int  throttle_io_will_be_throttled(int lowpri_window_msecs, mount_t mp);
+int throttle_lowpri_window(void) __attribute__((pure));
+struct uthread;
+void throttle_info_reset_window(struct uthread *ut);

 
 

-void   startprofclock(struct proc *);
-void   stopprofclock(struct proc *);
-void   setstatclockrate(int hzrate);
+#endif

 
 

-struct time_value;
-void   get_procrustime(struct time_value *tv);
+#ifdef XNU_KERNEL_PRIVATE
+void *exec_spawnattr_getmacpolicyinfo(const void *macextensions, const char *policyname, size_t *lenp);
+#endif

 
 

-void   load_init_program(struct proc *p);
-#endif /* BSD_KERNEL_PRIVATE */
+#ifdef BSD_KERNEL_PRIVATE

 
 

+#define THROTTLE_IO_ENABLE     1
+#define THROTTLE_IO_DISABLE    0
+void sys_override_io_throttle(int flag);
+
+#endif /* BSD_KERNEL_PRIVATE */

 
 __END_DECLS
 
 #endif /* !_SYS_SYSTM_H_ */
 
 __END_DECLS
 
 #endif /* !_SYS_SYSTM_H_ */

-