1 /* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
2 * vim:expandtab:shiftwidth=8:tabstop=8:
6 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License version 2 only,
10 * as published by the Free Software Foundation.
12 * This program is distributed in the hope that it will be useful, but
13 * WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * General Public License version 2 for more details (a copy is included
16 * in the LICENSE file that accompanied this code).
18 * You should have received a copy of the GNU General Public License
19 * version 2 along with this program; If not, see
20 * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf
22 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
23 * CA 95054 USA or visit www.sun.com if you need additional information or
29 * Copyright 2008 Sun Microsystems, Inc. All rights reserved
30 * Use is subject to license terms.
33 * This file is part of Lustre, http://www.lustre.org/
34 * Lustre is a trademark of Sun Microsystems, Inc.
37 #ifndef __LIBCFS_DARWIN_CFS_PRIM_H__
38 #define __LIBCFS_DARWIN_CFS_PRIM_H__
40 #ifndef __LIBCFS_LIBCFS_H__
41 #error Do not #include this file directly. #include <libcfs/libcfs.h> instead
45 #include <sys/types.h>
46 #include <sys/systm.h>
49 # ifndef __APPLE_API_PRIVATE
50 # define __APPLE_API_PRIVATE
51 # include <sys/user.h>
52 # undef __APPLE_API_PRIVATE
54 # include <sys/user.h>
56 # include <mach/mach_traps.h>
57 # include <mach/thread_switch.h>
58 # include <machine/cpu_number.h>
59 #endif /* !__DARWIN8__ */
61 #include <sys/kernel.h>
63 #include <mach/thread_act.h>
64 #include <mach/mach_types.h>
65 #include <mach/time_value.h>
66 #include <kern/sched_prim.h>
68 #include <vm/vm_kern.h>
69 #include <mach/machine/vm_param.h>
70 #include <machine/machine_routines.h>
71 #include <kern/clock.h>
72 #include <kern/thread_call.h>
73 #include <sys/param.h>
76 #include <libcfs/darwin/darwin-types.h>
77 #include <libcfs/darwin/darwin-utils.h>
78 #include <libcfs/darwin/darwin-lock.h>
81 * Symbol functions for libcfs
83 * OSX has no facility for use to register symbol.
84 * So we have to implement it.
86 #define CFS_SYMBOL_LEN 64
89 char name[CFS_SYMBOL_LEN];
92 struct list_head sym_list;
95 extern kern_return_t cfs_symbol_register(const char *, const void *);
96 extern kern_return_t cfs_symbol_unregister(const char *);
97 extern void * cfs_symbol_get(const char *);
98 extern kern_return_t cfs_symbol_put(const char *);
103 * User can register/unregister a list of sysctl_oids
104 * sysctl_oid is data struct of osx's sysctl-entry
106 #define CONFIG_SYSCTL 1
108 typedef struct sysctl_oid * cfs_sysctl_table_t;
109 typedef cfs_sysctl_table_t cfs_sysctl_table_header_t;
110 cfs_sysctl_table_header_t *cfs_register_sysctl_table (cfs_sysctl_table_t *table, int arg);
111 void cfs_unregister_sysctl_table (cfs_sysctl_table_header_t *table);
114 * Proc file system APIs, no /proc fs support in OSX
116 typedef struct cfs_proc_dir_entry {
118 } cfs_proc_dir_entry_t;
120 cfs_proc_dir_entry_t * cfs_create_proc_entry(char *name, int mod,
121 cfs_proc_dir_entry_t *parent);
122 void cfs_free_proc_entry(cfs_proc_dir_entry_t *de);
123 void cfs_remove_proc_entry(char *name, cfs_proc_dir_entry_t *entry);
125 typedef int (cfs_read_proc_t)(char *page, char **start, off_t off,
126 int count, int *eof, void *data);
127 typedef int (cfs_write_proc_t)(struct file *file, const char *buffer,
128 unsigned long count, void *data);
134 * cfs_psdev_register:
135 * cfs_psdev_deregister:
141 struct cdevsw *devsw;
145 extern kern_return_t cfs_psdev_register(cfs_psdev_t *);
146 extern kern_return_t cfs_psdev_deregister(cfs_psdev_t *);
149 * Task struct and ...
151 * Using BSD current_proc in Darwin
153 extern boolean_t assert_wait_possible(void);
154 extern void *get_bsdtask_info(task_t);
158 typedef struct {} cfs_task_t;
159 #define cfs_current() ((cfs_task_t *)current_thread())
160 #else /* !__DARWIN8__ */
162 typedef struct uthread cfs_task_t;
164 #define current_uthread() ((struct uthread *)get_bsdthread_info(current_act()))
165 #define cfs_current() current_uthread()
167 #endif /* !__DARWIN8__ */
169 #define cfs_task_lock(t) do {;} while (0)
170 #define cfs_task_unlock(t) do {;} while (0)
172 #define set_current_state(s) do {;} while (0)
174 #define CFS_DECL_JOURNAL_DATA
175 #define CFS_PUSH_JOURNAL do {;} while(0)
176 #define CFS_POP_JOURNAL do {;} while(0)
178 #define THREAD_NAME(comm, fmt, a...)
182 * OSX kernel thread can not be created with args,
183 * so we have to implement new APIs to create thread with args
186 typedef int (*cfs_thread_t)(void *);
188 extern task_t kernel_task;
191 * cloning flags, no use in OSX, just copy them from Linux
193 #define CSIGNAL 0x000000ff /* signal mask to be sent at exit */
194 #define CLONE_VM 0x00000100 /* set if VM shared between processes */
195 #define CLONE_FS 0x00000200 /* set if fs info shared between processes */
196 #define CLONE_FILES 0x00000400 /* set if open files shared between processes */
197 #define CLONE_SIGHAND 0x00000800 /* set if signal handlers and blocked signals shared */
198 #define CLONE_PID 0x00001000 /* set if pid shared */
199 #define CLONE_PTRACE 0x00002000 /* set if we want to let tracing continue on the child too */
200 #define CLONE_VFORK 0x00004000 /* set if the parent wants the child to wake it up on mm_release */
201 #define CLONE_PARENT 0x00008000 /* set if we want to have the same parent as the cloner */
202 #define CLONE_THREAD 0x00010000 /* Same thread group? */
203 #define CLONE_NEWNS 0x00020000 /* New namespace group? */
205 #define CLONE_SIGNAL (CLONE_SIGHAND | CLONE_THREAD)
207 extern int cfs_kernel_thread(cfs_thread_t func, void *arg, int flag);
211 * Wait Queue implementation
213 * Like wait_queue in Linux
215 typedef struct cfs_waitq {
216 struct ksleep_chan wq_ksleep_chan;
219 typedef struct cfs_waitlink {
220 struct cfs_waitq *wl_waitq;
221 struct ksleep_link wl_ksleep_link;
224 typedef int cfs_task_state_t;
226 #define CFS_TASK_INTERRUPTIBLE THREAD_ABORTSAFE
227 #define CFS_TASK_UNINT THREAD_UNINT
229 void cfs_waitq_init(struct cfs_waitq *waitq);
230 void cfs_waitlink_init(struct cfs_waitlink *link);
232 void cfs_waitq_add(struct cfs_waitq *waitq, struct cfs_waitlink *link);
233 void cfs_waitq_add_exclusive(struct cfs_waitq *waitq,
234 struct cfs_waitlink *link);
235 void cfs_waitq_del(struct cfs_waitq *waitq, struct cfs_waitlink *link);
236 int cfs_waitq_active(struct cfs_waitq *waitq);
238 void cfs_waitq_signal(struct cfs_waitq *waitq);
239 void cfs_waitq_signal_nr(struct cfs_waitq *waitq, int nr);
240 void cfs_waitq_broadcast(struct cfs_waitq *waitq);
242 void cfs_waitq_wait(struct cfs_waitlink *link, cfs_task_state_t state);
243 cfs_duration_t cfs_waitq_timedwait(struct cfs_waitlink *link,
244 cfs_task_state_t state,
245 cfs_duration_t timeout);
248 * Thread schedule APIs.
250 #define MAX_SCHEDULE_TIMEOUT ((long)(~0UL>>12))
251 extern void thread_set_timer_deadline(__u64 deadline);
252 extern void thread_cancel_timer(void);
254 static inline int cfs_schedule_timeout(int state, int64_t timeout)
259 result = assert_wait((event_t)current_thread(), state);
261 result = assert_wait((event_t)current_uthread(), state);
265 nanoseconds_to_absolutetime(timeout, &expire);
266 clock_absolutetime_interval_to_deadline(expire, &expire);
267 thread_set_timer_deadline(expire);
269 if (result == THREAD_WAITING)
270 result = thread_block(THREAD_CONTINUE_NULL);
272 thread_cancel_timer();
273 if (result == THREAD_TIMED_OUT)
280 #define cfs_schedule() cfs_schedule_timeout(CFS_TASK_UNINT, CFS_TICK)
281 #define cfs_pause(tick) cfs_schedule_timeout(CFS_TASK_UNINT, tick)
283 #define __wait_event(wq, condition) \
285 struct cfs_waitlink __wait; \
287 cfs_waitlink_init(&__wait); \
289 cfs_waitq_add(&wq, &__wait); \
292 cfs_waitq_wait(&__wait, CFS_TASK_UNINT); \
293 cfs_waitq_del(&wq, &__wait); \
295 cfs_waitq_del(&wq, &__wait); \
298 #define wait_event(wq, condition) \
302 __wait_event(wq, condition); \
305 #define __wait_event_interruptible(wq, condition, ex, ret) \
307 struct cfs_waitlink __wait; \
309 cfs_waitlink_init(&__wait); \
312 cfs_waitq_add(&wq, &__wait); \
314 cfs_waitq_add_exclusive(&wq, &__wait); \
317 if (!cfs_signal_pending()) { \
318 cfs_waitq_wait(&__wait, \
319 CFS_TASK_INTERRUPTIBLE); \
320 cfs_waitq_del(&wq, &__wait); \
323 ret = -ERESTARTSYS; \
326 cfs_waitq_del(&wq, &__wait); \
329 #define wait_event_interruptible(wq, condition) \
333 __wait_event_interruptible(wq, condition, \
338 #define wait_event_interruptible_exclusive(wq, condition) \
342 __wait_event_interruptible(wq, condition, \
348 extern void wakeup_one __P((void * chan));
350 /* only used in tests */
351 #define wake_up_process(p) \
353 wakeup_one((caddr_t)p); \
356 /* used in couple of places */
357 static inline void sleep_on(cfs_waitq_t *waitq)
361 cfs_waitlink_init(&link);
362 cfs_waitq_add(waitq, &link);
363 cfs_waitq_wait(&link, CFS_TASK_UNINT);
364 cfs_waitq_del(waitq, &link);
370 typedef sigset_t cfs_sigset_t;
372 #define SIGNAL_MASK_ASSERT()
376 typedef struct cfs_timer {
380 #define cfs_init_timer(t) do {} while(0)
381 void cfs_timer_init(struct cfs_timer *t, void (*func)(unsigned long), void *arg);
382 void cfs_timer_done(struct cfs_timer *t);
383 void cfs_timer_arm(struct cfs_timer *t, cfs_time_t deadline);
384 void cfs_timer_disarm(struct cfs_timer *t);
385 int cfs_timer_is_armed(struct cfs_timer *t);
387 cfs_time_t cfs_timer_deadline(struct cfs_timer *t);
391 * We don't need to copy out everything in osx
393 #define cfs_ioctl_data_out(a, d, l) \
397 assert((l) >= sizeof(*d)); \
398 __size = (l) - sizeof(*d); \
400 __rc = copy_to_user((void *)a + __size, \
401 (void *)d + __size, \
409 /* Run in PowerG5 who is PPC64 */
410 #define SMP_CACHE_BYTES 128
411 #define __cacheline_aligned __attribute__((__aligned__(SMP_CACHE_BYTES)))
415 * XXX Liang: patch xnu and export current_processor()?
417 * #define smp_processor_id() current_processor()
419 #define smp_processor_id() 0
420 /* XXX smp_call_function is not supported in xnu */
421 #define smp_call_function(f, a, n, w) do {} while(0)
422 int cfs_online_cpus(void);
423 #define smp_num_cpus cfs_online_cpus()
428 extern int is_suser(void);
431 #define likely(exp) (exp)
434 #define unlikely(exp) (exp)
437 #define lock_kernel() do {} while(0)
438 #define unlock_kernel() do {} while(0)
440 #define USERMODEHELPER(path, argv, envp) (0)
442 #define cfs_module(name, version, init, fini) \
443 extern kern_return_t _start(kmod_info_t *ki, void *data); \
444 extern kern_return_t _stop(kmod_info_t *ki, void *data); \
445 __private_extern__ kern_return_t name##_start(kmod_info_t *ki, void *data); \
446 __private_extern__ kern_return_t name##_stop(kmod_info_t *ki, void *data); \
448 kmod_info_t KMOD_INFO_NAME = { 0, KMOD_INFO_VERSION, -1, \
449 { "com.clusterfs.lustre." #name }, { version }, \
450 -1, 0, 0, 0, 0, name##_start, name##_stop }; \
452 __private_extern__ kmod_start_func_t *_realmain = name##_start; \
453 __private_extern__ kmod_stop_func_t *_antimain = name##_stop; \
454 __private_extern__ int _kext_apple_cc = __APPLE_CC__ ; \
456 kern_return_t name##_start(kmod_info_t *ki, void *d) \
461 kern_return_t name##_stop(kmod_info_t *ki, void *d) \
464 return KERN_SUCCESS; \
468 * to allow semicolon after cfs_module(...) \
470 struct __dummy_ ## name ## _struct {}
472 #define inter_module_get(n) cfs_symbol_get(n)
473 #define inter_module_put(n) cfs_symbol_put(n)
475 static inline int request_module(char *name)
487 #define EXPORT_SYMBOL(s)
488 #define MODULE_AUTHOR(s)
489 #define MODULE_DESCRIPTION(s)
490 #define MODULE_LICENSE(s)
491 #define MODULE_PARM(a, b)
492 #define MODULE_PARM_DESC(a, b)
494 #define KERNEL_VERSION(a,b,c) ((a)*100+(b)*10+c)
495 #define LINUX_VERSION_CODE KERNEL_VERSION(2,5,0)
498 #define in_interrupt() ml_at_interrupt_context()
500 #define KERN_EMERG "<0>" /* system is unusable */
501 #define KERN_ALERT "<1>" /* action must be taken immediately */
502 #define KERN_CRIT "<2>" /* critical conditions */
503 #define KERN_ERR "<3>" /* error conditions */
504 #define KERN_WARNING "<4>" /* warning conditions */
505 #define KERN_NOTICE "<5>" /* normal but significant condition */
506 #define KERN_INFO "<6>" /* informational */
507 #define KERN_DEBUG "<7>" /* debug-level messages */
509 static inline long PTR_ERR(const void *ptr)
514 #define ERR_PTR(err) ((void *)err)
515 #define IS_ERR(p) ((unsigned long)(p) + 1000 < 1000)
517 #else /* !__KERNEL__ */
519 typedef struct cfs_proc_dir_entry {
521 } cfs_proc_dir_entry_t;
523 #include <libcfs/user-prim.h>
524 #define __WORDSIZE 32
526 #endif /* END __KERNEL__ */
531 #define EPROTO EPROTOTYPE
534 #define EBADR EBADRPC
537 #define ERESTARTSYS 512
540 #define EDEADLOCK EDEADLK
546 #define ENODATA EINVAL
549 #define ENOTSUPP EINVAL
552 #if BYTE_ORDER == BIG_ENDIAN
553 # define __BIG_ENDIAN
555 # define __LITTLE_ENDIAN
558 #endif /* __LIBCFS_DARWIN_CFS_PRIM_H__ */