/* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*- * vim:expandtab:shiftwidth=8:tabstop=8: * * Copyright (C) 2001 Cluster File Systems, Inc. * * This file is part of Lustre, http://www.lustre.org. * * Lustre is free software; you can redistribute it and/or * modify it under the terms of version 2 of the GNU General Public * License as published by the Free Software Foundation. * * Lustre is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with Lustre; if not, write to the Free Software * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. * * Basic library routines. * */ #ifndef __LIBCFS_LINUX_CFS_PRIM_H__ #define __LIBCFS_LINUX_CFS_PRIM_H__ #ifndef __LIBCFS_LIBCFS_H__ #error Do not #include this file directly. #include instead #endif #ifdef __KERNEL__ #ifndef AUTOCONF_INCLUDED #include #endif #include #include #include #include #include #include #include #include #include #include #include #include /* * Pseudo device register */ typedef struct miscdevice cfs_psdev_t; #define cfs_psdev_register(dev) misc_register(dev) #define cfs_psdev_deregister(dev) misc_deregister(dev) /* * Sysctl register */ typedef struct ctl_table cfs_sysctl_table_t; typedef struct ctl_table_header cfs_sysctl_table_header_t; #ifdef HAVE_2ARGS_REGISTER_SYSCTL #define cfs_register_sysctl_table(t, a) register_sysctl_table(t, a) #else #define cfs_register_sysctl_table(t, a) register_sysctl_table(t) #endif #define cfs_unregister_sysctl_table(t) unregister_sysctl_table(t) /* * Symbol register */ #if (LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0)) #define cfs_symbol_register(s, p) inter_module_register(s, THIS_MODULE, p) #define cfs_symbol_unregister(s) inter_module_unregister(s) #define cfs_symbol_get(s) inter_module_get(s) #define cfs_symbol_put(s) inter_module_put(s) #define cfs_module_get() MOD_INC_USE_COUNT #define cfs_module_put() MOD_DEC_USE_COUNT #else #define cfs_symbol_register(s, p) do {} while(0) #define cfs_symbol_unregister(s) do {} while(0) #define cfs_symbol_get(s) symbol_get(s) #define cfs_symbol_put(s) symbol_put(s) #define cfs_module_get() try_module_get(THIS_MODULE) #define cfs_module_put() module_put(THIS_MODULE) #endif /* * Proc file system APIs */ typedef read_proc_t cfs_read_proc_t; typedef write_proc_t cfs_write_proc_t; typedef struct proc_dir_entry cfs_proc_dir_entry_t; #define cfs_create_proc_entry(n, m, p) create_proc_entry(n, m, p) #define cfs_free_proc_entry(e) free_proc_entry(e) #define cfs_remove_proc_entry(n, e) remove_proc_entry(n, e) /* * Wait Queue */ #define CFS_TASK_INTERRUPTIBLE TASK_INTERRUPTIBLE #define CFS_TASK_UNINT TASK_UNINTERRUPTIBLE typedef wait_queue_t cfs_waitlink_t; typedef wait_queue_head_t cfs_waitq_t; typedef long cfs_task_state_t; #define cfs_waitq_init(w) init_waitqueue_head(w) #define cfs_waitlink_init(l) init_waitqueue_entry(l, current) #define cfs_waitq_add(w, l) add_wait_queue(w, l) #define cfs_waitq_add_exclusive(w, l) add_wait_queue_exclusive(w, l) #define cfs_waitq_forward(l, w) do {} while(0) #define cfs_waitq_del(w, l) remove_wait_queue(w, l) #define cfs_waitq_active(w) waitqueue_active(w) #define cfs_waitq_signal(w) wake_up(w) #define cfs_waitq_signal_nr(w,n) wake_up_nr(w, n) #define cfs_waitq_broadcast(w) wake_up_all(w) #define cfs_waitq_wait(l, s) schedule() #define cfs_waitq_timedwait(l, s, t) schedule_timeout(t) #define cfs_schedule_timeout(s, t) schedule_timeout(t) #define cfs_schedule() schedule() /* Kernel thread */ typedef int (*cfs_thread_t)(void *); #define cfs_kernel_thread(func, a, f) kernel_thread(func, a, f) /* * Task struct */ typedef struct task_struct cfs_task_t; #define cfs_current() current #define cfs_task_lock(t) task_lock(t) #define cfs_task_unlock(t) task_unlock(t) #define CFS_DECL_JOURNAL_DATA void *journal_info #define CFS_PUSH_JOURNAL do { \ journal_info = current->journal_info; \ current->journal_info = NULL; \ } while(0) #define CFS_POP_JOURNAL do { \ current->journal_info = journal_info; \ } while(0) /* Module interfaces */ #define cfs_module(name, version, init, fini) \ module_init(init); \ module_exit(fini) /* * Signal */ typedef sigset_t cfs_sigset_t; /* * Timer */ typedef struct timer_list cfs_timer_t; typedef void (*timer_func_t)(unsigned long); #define cfs_init_timer(t) init_timer(t) static inline void cfs_timer_init(cfs_timer_t *t, void (*func)(unsigned long), void *arg) { init_timer(t); t->function = (timer_func_t)func; t->data = (unsigned long)arg; } static inline void cfs_timer_done(cfs_timer_t *t) { return; } static inline void cfs_timer_arm(cfs_timer_t *t, cfs_time_t deadline) { mod_timer(t, deadline); } static inline void cfs_timer_disarm(cfs_timer_t *t) { del_timer(t); } static inline int cfs_timer_is_armed(cfs_timer_t *t) { return timer_pending(t); } static inline cfs_time_t cfs_timer_deadline(cfs_timer_t *t) { return t->expires; } /* deschedule for a bit... */ static inline void cfs_pause(cfs_duration_t ticks) { set_current_state(TASK_UNINTERRUPTIBLE); schedule_timeout(ticks); } #else /* !__KERNEL__ */ typedef struct proc_dir_entry cfs_proc_dir_entry_t; #include "../user-prim.h" #endif /* __KERNEL__ */ #endif