4 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License version 2 only,
8 * as published by the Free Software Foundation.
10 * This program is distributed in the hope that it will be useful, but
11 * WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * General Public License version 2 for more details (a copy is included
14 * in the LICENSE file that accompanied this code).
16 * You should have received a copy of the GNU General Public License
17 * version 2 along with this program; If not, see
18 * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf
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21 * CA 95054 USA or visit www.sun.com if you need additional information or
27 * Copyright (c) 2008, 2010, Oracle and/or its affiliates. All rights reserved.
28 * Use is subject to license terms.
30 * Copyright (c) 2012, Intel Corporation.
33 * This file is part of Lustre, http://www.lustre.org/
34 * Lustre is a trademark of Sun Microsystems, Inc.
36 * libcfs/include/libcfs/user-prim.h
38 * Author: Nikita Danilov <nikita@clusterfs.com>
41 #ifndef __LIBCFS_USER_PRIM_H__
42 #define __LIBCFS_USER_PRIM_H__
44 #ifndef __LIBCFS_LIBCFS_H__
45 #error Do not #include this file directly. #include <libcfs/libcfs.h> instead
48 /* Implementations of portable APIs for liblustre */
51 * liblustre is single-threaded, so most "synchronization" APIs are trivial.
55 # define EXPORT_SYMBOL(s)
60 typedef struct proc_dir_entry cfs_proc_dir_entry_t;
63 * Just present a single processor until will add thread support.
65 #ifndef smp_processor_id
66 # define smp_processor_id() 0
68 #ifndef num_online_cpus
69 # define num_online_cpus() 1
71 #ifndef num_possible_cpus
72 # define num_possible_cpus() 1
78 # define put_cpu() do {} while (0)
83 #ifndef for_each_possible_cpu
84 # define for_each_possible_cpu(cpu) for ((cpu) = 0; (cpu) < 1; (cpu)++)
91 typedef struct cfs_waitlink {
92 struct list_head sleeping;
96 typedef struct cfs_waitq {
97 struct list_head sleepers;
100 #define CFS_DECL_WAITQ(wq) wait_queue_head_t wq
101 void init_waitqueue_head(struct cfs_waitq *waitq);
102 void init_waitqueue_entry_current(struct cfs_waitlink *link);
103 void add_wait_queue(struct cfs_waitq *waitq, struct cfs_waitlink *link);
104 void add_wait_queue_exclusive(struct cfs_waitq *waitq, struct cfs_waitlink *link);
105 void add_wait_queue_exclusive_head(struct cfs_waitq *waitq, struct cfs_waitlink *link);
106 void remove_wait_queue(struct cfs_waitq *waitq, struct cfs_waitlink *link);
107 int waitqueue_active(struct cfs_waitq *waitq);
108 void wake_up(struct cfs_waitq *waitq);
109 void wake_up_nr(struct cfs_waitq *waitq, int nr);
110 void wake_up_all(struct cfs_waitq *waitq);
111 void waitq_wait(struct cfs_waitlink *link, long state);
112 int64_t waitq_timedwait(struct cfs_waitlink *link, long state, int64_t timeout);
113 void schedule_timeout_and_set_state(long state, int64_t timeout);
114 void cfs_pause(cfs_duration_t d);
115 int need_resched(void);
116 void cond_resched(void);
121 #define TASK_INTERRUPTIBLE (0)
122 #define TASK_UNINTERRUPTIBLE (1)
123 #define TASK_RUNNING (2)
125 static inline void schedule(void) {}
126 static inline void schedule_timeout(int64_t t) {}
131 typedef int (read_proc_t)(char *page, char **start, off_t off,
132 int count, int *eof, void *data);
134 struct file; /* forward ref */
135 typedef int (write_proc_t)(struct file *file, const char *buffer,
136 unsigned long count, void *data);
147 struct list_head tl_list;
148 void (*function)(ulong_ptr_t unused);
154 #define in_interrupt() (0)
159 static inline int misc_register(struct miscdevice *foo)
164 static inline int misc_deregister(struct miscdevice *foo)
169 #define cfs_sigfillset(l) do {} while (0)
170 #define cfs_recalc_sigpending(l) do {} while (0)
172 #define DAEMON_FLAGS 0
174 #define L1_CACHE_ALIGN(x) (x)
176 #ifdef HAVE_LIBPTHREAD
177 typedef int (*cfs_thread_t)(void *);
178 void *kthread_run(cfs_thread_t func, void *arg, const char namefmt[], ...);
180 /* Fine, crash, but stop giving me compile warnings */
181 #define kthread_run(f, a, n, ...) LBUG()
184 uid_t current_uid(void);
185 gid_t current_gid(void);
186 uid_t current_fsuid(void);
187 gid_t current_fsgid(void);
189 #ifndef HAVE_STRLCPY /* not in glibc for RHEL 5.x, remove when obsolete */
190 size_t strlcpy(char *tgt, const char *src, size_t tgt_len);
193 #ifndef HAVE_STRLCAT /* not in glibc for RHEL 5.x, remove when obsolete */
194 size_t strlcat(char *tgt, const char *src, size_t tgt_len);
197 #define LIBCFS_REALLOC(ptr, size) realloc(ptr, size)
199 #define cfs_online_cpus() sysconf(_SC_NPROCESSORS_ONLN)
201 // static inline void local_irq_save(unsigned long flag) {return;}
202 // static inline void local_irq_restore(unsigned long flag) {return;}
205 CFS_STACK_TRACE_DEPTH = 16
208 struct cfs_stack_trace {
209 void *frame[CFS_STACK_TRACE_DEPTH];
215 #ifndef do_div /* gcc only, platform-specific will override */
216 #define do_div(a,b) \
218 unsigned long remainder;\
219 remainder = (a) % (b); \
228 struct group_info{ };
231 # define min(x,y) ((x)<(y) ? (x) : (y))
235 # define max(x,y) ((x)>(y) ? (x) : (y))
238 #define get_random_bytes(val, size) (*val) = 0
240 /* utility libcfs init/fini entries */
242 extern int libcfs_arch_init(void);
243 extern void libcfs_arch_cleanup(void);
244 #else /* !__WINNT__ */
245 static inline int libcfs_arch_init(void) {
248 static inline void libcfs_arch_cleanup(void) {
253 /* proc interface wrappers for non-win OS */
255 #define cfs_proc_open open
256 #define cfs_proc_mknod mknod
257 #define cfs_proc_ioctl ioctl
258 #define cfs_proc_close close
259 #define cfs_proc_read read
260 #define cfs_proc_write write
261 #define cfs_proc_fopen fopen
262 #define cfs_proc_fclose fclose
263 #define cfs_proc_fgets fgets
270 /* __LIBCFS_USER_PRIM_H__ */
274 * c-indentation-style: "K&R"