1 /* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
2 * vim:expandtab:shiftwidth=8:tabstop=8:
4 * Copyright (C) 2001 Cluster File Systems, Inc. <info@clusterfs.com>
6 * This file is part of Lustre, http://www.lustre.org.
8 * Lustre is free software; you can redistribute it and/or
9 * modify it under the terms of version 2 of the GNU General Public
10 * License as published by the Free Software Foundation.
12 * Lustre is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
17 * You should have received a copy of the GNU General Public License
18 * along with Lustre; if not, write to the Free Software
19 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
21 * User-space Lustre headers.
31 #ifdef HAVE_ASM_PAGE_H
32 # include <asm/page.h>
34 #ifdef HAVE_SYS_USER_H
35 # include <sys/user.h>
41 #include <sys/ioctl.h>
48 #include <libcfs/list.h>
49 #include <portals/p30.h>
50 #include <libcfs/kp30.h>
52 /* definitions for liblustre */
57 #define PAGE_SIZE (1UL << PAGE_SHIFT)
58 #define PAGE_MASK (~(PAGE_SIZE-1))
59 #define loff_t long long
61 typedef unsigned short umode_t;
65 /* This is because lprocfs_status.h gets included here indirectly. It would
66 * be much better to just avoid lprocfs being included into liblustre entirely
67 * but that requires more header surgery than I can handle right now.
69 #ifndef smp_processor_id
70 #define smp_processor_id() 0
73 /* always adopt 2.5 definitions */
74 #define KERNEL_VERSION(a,b,c) ((a)*100+(b)*10+c)
75 #define LINUX_VERSION_CODE (2*200+5*10+0)
77 static inline void inter_module_put(void *a)
82 extern ptl_handle_ni_t tcpnal_ni;
84 void *inter_module_get(char *arg);
89 void (*ws_task)(void *arg);
93 static inline void prepare_work(struct work_struct *q, void (*t)(void *),
101 static inline void schedule_work(struct work_struct *q)
103 q->ws_task(q->ws_arg);
107 #define strnlen(a,b) strlen(a)
108 static inline void *kmalloc(int size, int prot)
112 #define vmalloc malloc
114 #define kfree(a) free(a)
116 #define GFP_HIGHUSER 1
119 #define IS_ERR(a) (((a) && abs((long)(a)) < 500) ? 1 : 0)
120 #define PTR_ERR(a) ((long)(a))
121 #define ERR_PTR(a) ((void*)((long)(a)))
127 typedef int (read_proc_t)(char *page, char **start, off_t off,
128 int count, int *eof, void *data);
130 struct file; /* forward ref */
131 typedef int (write_proc_t)(struct file *file, const char *buffer,
132 unsigned long count, void *data);
134 #define NIPQUAD(addr) \
135 ((unsigned char *)&addr)[0], \
136 ((unsigned char *)&addr)[1], \
137 ((unsigned char *)&addr)[2], \
138 ((unsigned char *)&addr)[3]
140 #if defined(__LITTLE_ENDIAN)
141 #define HIPQUAD(addr) \
142 ((unsigned char *)&addr)[3], \
143 ((unsigned char *)&addr)[2], \
144 ((unsigned char *)&addr)[1], \
145 ((unsigned char *)&addr)[0]
146 #elif defined(__BIG_ENDIAN)
147 #define HIPQUAD NIPQUAD
149 #error "Undefined byteorder??"
150 #endif /* __LITTLE_ENDIAN */
153 static __inline__ int set_bit(int nr,long * addr)
158 mask = 1 << (nr & 0x1f);
159 retval = (mask & *addr) != 0;
164 static __inline__ int clear_bit(int nr, long * addr)
169 mask = 1 << (nr & 0x1f);
170 retval = (mask & *addr) != 0;
175 static __inline__ int test_bit(int nr, long * addr)
180 mask = 1 << (nr & 0x1f);
181 return ((mask & *addr) != 0);
184 static __inline__ int ext2_set_bit(int nr, void *addr)
186 return set_bit(nr, (long*)addr);
189 static __inline__ int ext2_clear_bit(int nr, void *addr)
191 return clear_bit(nr, (long*)addr);
194 static __inline__ int ext2_test_bit(int nr, void *addr)
196 return test_bit(nr, (long*)addr);
205 #define MODULE_AUTHOR(name)
206 #define MODULE_DESCRIPTION(name)
207 #define MODULE_LICENSE(name)
209 #define module_init(init)
210 #define module_exit(exit)
212 #define THIS_MODULE NULL
219 static inline int misc_register(void *foo)
224 static inline int misc_deregister(void *foo)
229 static inline int request_module(char *name)
234 #define __MOD_INC_USE_COUNT(m) do {} while (0)
235 #define __MOD_DEC_USE_COUNT(m) do {} while (0)
236 #define MOD_INC_USE_COUNT do {} while (0)
237 #define MOD_DEC_USE_COUNT do {} while (0)
238 static inline void __module_get(struct module *module)
242 static inline int try_module_get(struct module *module)
247 static inline void module_put(struct module *module)
251 /* module initialization */
252 extern int init_obdclass(void);
253 extern int ptlrpc_init(void);
254 extern int ldlm_init(void);
255 extern int osc_init(void);
256 extern int lov_init(void);
257 extern int mdc_init(void);
258 extern int echo_client_init(void);
264 #define EXPORT_SYMBOL(S)
266 typedef struct { } spinlock_t;
267 typedef __u64 kdev_t;
269 #define SPIN_LOCK_UNLOCKED (spinlock_t) { }
270 #define LASSERT_SPIN_LOCKED(lock) do {} while(0)
272 static inline void spin_lock(spinlock_t *l) {return;}
273 static inline void spin_unlock(spinlock_t *l) {return;}
274 static inline void spin_lock_init(spinlock_t *l) {return;}
275 static inline void local_irq_save(unsigned long flag) {return;}
276 static inline void local_irq_restore(unsigned long flag) {return;}
277 static inline int spin_is_locked(spinlock_t *l) {return 1;}
279 static inline void spin_lock_bh(spinlock_t *l) {}
280 static inline void spin_unlock_bh(spinlock_t *l) {}
281 static inline void spin_lock_irqsave(spinlock_t *a, unsigned long b) {}
282 static inline void spin_unlock_irqrestore(spinlock_t *a, unsigned long b) {}
284 typedef struct { } rwlock_t;
285 #define rwlock_init(x) do {} while(0)
286 #define RW_LOCK_UNLOCKED (rwlock_t) {}
288 #define read_unlock(l)
289 #define write_lock(l)
290 #define write_unlock(l)
292 #define min(x,y) ((x)<(y) ? (x) : (y))
293 #define max(x,y) ((x)>(y) ? (x) : (y))
296 #define min_t(type,x,y) \
297 ({ type __x = (x); type __y = (y); __x < __y ? __x: __y; })
300 #define max_t(type,x,y) \
301 ({ type __x = (x); type __y = (y); __x > __y ? __x: __y; })
304 #define container_of(ptr, type, member) ({ \
305 const typeof( ((type *)0)->member ) *__mptr = (ptr); \
306 (type *)( (char *)__mptr - offsetof(type,member) );})
308 /* registering symbols */
310 #define ERESTARTSYS ERESTART
315 void get_random_bytes(void *ptr, int size);
320 #define num_physpages (16 * 1024)
322 static inline int copy_from_user(void *a,void *b, int c)
328 static inline int copy_to_user(void *a,void *b, int c)
334 static inline long strncpy_from_user(char *dest, const char *src, long n)
337 s = strncpy(dest, src, n);
338 return strnlen(s, n);
345 #define SLAB_HWCACHE_ALIGN 0
346 static inline kmem_cache_t *
347 kmem_cache_create(const char *name, size_t objsize, size_t cdum,
349 void (*e)(void *, kmem_cache_t *, unsigned long),
350 void (*f)(void *, kmem_cache_t *, unsigned long))
353 c = malloc(sizeof(*c));
357 CDEBUG(D_MALLOC, "alloc slab cache %s at %p, objsize %d\n",
358 name, c, (int)objsize);
362 static inline int kmem_cache_destroy(kmem_cache_t *a)
364 CDEBUG(D_MALLOC, "destroy slab cache %p, objsize %u\n", a, a->size);
368 #define kmem_cache_alloc(cache, prio) malloc(cache->size)
369 #define kmem_cache_free(cache, obj) free(obj)
371 #define PAGE_CACHE_SIZE PAGE_SIZE
372 #define PAGE_CACHE_SHIFT PAGE_SHIFT
373 #define PAGE_CACHE_MASK PAGE_MASK
375 /* struct page decl moved out from here into portals/include/libcfs/user-prim.h */
378 #define PAGE_LIST_ENTRY list
379 #define PAGE_LIST(page) ((page)->list)
381 #define page_address(page) ((page)->addr)
382 #define kmap(page) (page)->addr
383 #define kunmap(a) do {} while (0)
385 static inline struct page *alloc_pages(int mask, unsigned long order)
387 struct page *pg = malloc(sizeof(*pg));
391 #if 0 //#ifdef MAP_ANONYMOUS
392 pg->addr = mmap(0, PAGE_SIZE << order, PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);
394 pg->addr = malloc(PAGE_SIZE << order);
404 #define alloc_page(mask) alloc_pages((mask), 0)
406 static inline void __free_pages(struct page *pg, int what)
408 #if 0 //#ifdef MAP_ANONYMOUS
409 munmap(pg->addr, PAGE_SIZE);
416 #define __free_page(page) __free_pages((page), 0)
417 #define free_page(page) __free_page(page)
419 static inline struct page* __grab_cache_page(unsigned long index)
421 struct page *pg = alloc_pages(0, 0);
428 #define grab_cache_page(index) __grab_cache_page(index)
429 #define page_cache_release(page) __free_pages(page, 0)
432 #define do_div(a,b) \
434 unsigned long remainder;\
435 remainder = (a) % (b); \
441 #define ATTR_MODE 0x0001
442 #define ATTR_UID 0x0002
443 #define ATTR_GID 0x0004
444 #define ATTR_SIZE 0x0008
445 #define ATTR_ATIME 0x0010
446 #define ATTR_MTIME 0x0020
447 #define ATTR_CTIME 0x0040
448 #define ATTR_ATIME_SET 0x0080
449 #define ATTR_MTIME_SET 0x0100
450 #define ATTR_FORCE 0x0200 /* Not a change, but a change it */
451 #define ATTR_ATTR_FLAG 0x0400
452 #define ATTR_RAW 0x0800 /* file system, not vfs will massage attrs */
453 #define ATTR_FROM_OPEN 0x1000 /* called from open path, ie O_TRUNC */
454 /* ATTR_CTIME_SET has been defined in lustre_idl.h */
457 unsigned int ia_valid;
465 unsigned int ia_attr_flags;
468 #define IT_OPEN 0x0001
469 #define IT_CREAT 0x0002
470 #define IT_READDIR 0x0004
471 #define IT_GETATTR 0x0008
472 #define IT_LOOKUP 0x0010
473 #define IT_UNLINK 0x0020
474 #define IT_GETXATTR 0x0040
475 #define IT_EXEC 0x0080
476 #define IT_PIN 0x0100
477 #define IT_CHDIR 0x0200
479 #define IT_FL_LOCKED 0x0001
480 #define IT_FL_FOLLOWED 0x0002 /* set by vfs_follow_link */
482 #define INTENT_MAGIC 0x19620323
484 struct lookup_intent {
486 void (*it_op_release)(struct lookup_intent *);
491 void *fs_data; /* FS-specific intent data */
495 struct lustre_intent_data {
498 __u64 it_lock_handle;
504 #define LUSTRE_IT(it) ((struct lustre_intent_data *)((it)->d.fs_data))
506 static inline void intent_init(struct lookup_intent *it, int op, int flags)
508 memset(it, 0, sizeof(*it));
509 it->it_magic = INTENT_MAGIC;
511 it->it_flags = flags;
524 struct rw_semaphore {
533 /* use the macro's argument to avoid unused warnings */
534 #define down(a) do { (void)a; } while (0)
535 #define up(a) do { (void)a; } while (0)
536 #define down_read(a) do { (void)a; } while (0)
537 #define up_read(a) do { (void)a; } while (0)
538 #define down_write(a) do { (void)a; } while (0)
539 #define up_write(a) do { (void)a; } while (0)
540 #define sema_init(a,b) do { (void)a; } while (0)
541 #define init_rwsem(a) do { (void)a; } while (0)
542 #define DECLARE_MUTEX(name) \
543 struct semaphore name = { 1 }
544 static inline void init_MUTEX (struct semaphore *sem)
551 struct list_head sleepers;
555 struct list_head sleeping;
568 struct fs_struct *fs;
570 struct signal pending;
582 struct fs_struct __fs;
585 extern struct task_struct *current;
586 int in_group_p(gid_t gid);
587 static inline int capable(int cap)
589 if (current->cap_effective & (1 << cap))
595 #define set_current_state(foo) do { current->state = foo; } while (0)
597 #define init_waitqueue_entry(q,p) do { (q)->process = p; } while (0)
598 #define add_wait_queue(q,p) do { list_add(&(q)->sleepers, &(p)->sleeping); } while (0)
599 #define del_wait_queue(p) do { list_del(&(p)->sleeping); } while (0)
600 #define remove_wait_queue(q,p) do { list_del(&(p)->sleeping); } while (0)
602 #define DECLARE_WAIT_QUEUE_HEAD(HEAD) \
603 wait_queue_head_t HEAD = { \
604 .sleepers = LIST_HEAD_INIT(HEAD.sleepers) \
606 #define init_waitqueue_head(l) INIT_LIST_HEAD(&(l)->sleepers)
607 #define wake_up(l) do { int a; a++; } while (0)
608 #define TASK_INTERRUPTIBLE 0
609 #define TASK_UNINTERRUPTIBLE 1
610 #define TASK_RUNNING 2
612 #define wait_event_interruptible(wq, condition) \
614 struct l_wait_info lwi; \
615 int timeout = 100000000;/* for ever */ \
618 lwi = LWI_TIMEOUT(timeout, NULL, NULL); \
619 ret = l_wait_event(NULL, condition, &lwi); \
624 #define in_interrupt() (0)
626 #define schedule() do {} while (0)
627 static inline int schedule_timeout(signed long t)
632 #define lock_kernel() do {} while (0)
633 #define unlock_kernel() do {} while (0)
634 #define daemonize(l) do {} while (0)
635 #define sigfillset(l) do {} while (0)
636 #define recalc_sigpending(l) do {} while (0)
637 #define kernel_thread(l,m,n) LBUG()
639 #define USERMODEHELPER(path, argv, envp) (0)
640 #define SIGNAL_MASK_ASSERT()
643 #include <sys/time.h>
645 #error "liblustre's jiffies currently expects HZ to be 1"
649 unsigned long _ret = 0; \
651 if (gettimeofday(&tv, NULL) == 0) \
655 #define time_after(a, b) ((long)(b) - (long)(a) < 0)
656 #define time_before(a, b) time_after(b,a)
658 static inline unsigned long get_seconds(void)
662 gettimeofday(&tv, NULL);
663 return (tv.tv_sec + tv.tv_usec / 1000000);
667 struct list_head tl_list;
668 void (*function)(unsigned long unused);
673 static inline int timer_pending(struct timer_list *l)
675 if (l->expires > jiffies)
681 static inline int init_timer(struct timer_list *l)
683 INIT_LIST_HEAD(&l->tl_list);
687 static inline void mod_timer(struct timer_list *l, int thetime)
689 l->expires = thetime;
692 static inline void del_timer(struct timer_list *l)
697 typedef struct { volatile int counter; } atomic_t;
699 #define ATOMIC_INIT(i) { (i) }
700 #define atomic_read(a) ((a)->counter)
701 #define atomic_set(a,b) do {(a)->counter = b; } while (0)
702 #define atomic_dec_and_test(a) ((--((a)->counter)) == 0)
703 #define atomic_inc(a) (((a)->counter)++)
704 #define atomic_dec(a) do { (a)->counter--; } while (0)
705 #define atomic_add(b,a) do {(a)->counter += b;} while (0)
706 #define atomic_sub(b,a) do {(a)->counter -= b;} while (0)
709 #define likely(exp) (exp)
712 #define unlikely(exp) (exp)
715 /* FIXME sys/capability will finally included linux/fs.h thus
716 * cause numerous trouble on x86-64. as temporary solution for
717 * build broken at cary, we copy definition we need from capability.h
721 typedef struct _cap_struct *cap_t;
722 typedef int cap_value_t;
733 #define CAP_DAC_OVERRIDE 1
734 #define CAP_DAC_READ_SEARCH 2
737 #define CAP_SYS_ADMIN 21
739 cap_t cap_get_proc(void);
740 int cap_get_flag(cap_t, cap_value_t, cap_flag_t, cap_flag_value_t *);
745 static inline int llog_init_commit_master(void) { return 0; }
746 static inline int llog_cleanup_commit_master(int force) { return 0; }
747 static inline void portals_run_lbug_upcall(char *file, const char *fn,
752 printf("!!!LBUG at %s:%d\n", __FILE__, __LINE__); \
761 wait_queue_head_t wait;
764 #define COMPLETION_INITIALIZER(work) \
765 { 0, __WAIT_QUEUE_HEAD_INITIALIZER((work).wait) }
767 #define DECLARE_COMPLETION(work) \
768 struct completion work = COMPLETION_INITIALIZER(work)
770 #define INIT_COMPLETION(x) ((x).done = 0)
772 static inline void init_completion(struct completion *x)
775 init_waitqueue_head(&x->wait);
778 struct liblustre_wait_callback {
779 struct list_head llwc_list;
780 int (*llwc_fn)(void *arg);
784 void *liblustre_register_wait_callback(int (*fn)(void *arg), void *arg);
785 void liblustre_deregister_wait_callback(void *notifier);
786 int liblustre_wait_event(int timeout);
788 #include <linux/obd_support.h>
789 #include <linux/lustre_idl.h>
790 #include <linux/lustre_lib.h>
791 #include <linux/lustre_import.h>
792 #include <linux/lustre_export.h>
793 #include <linux/lustre_net.h>