1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
|
// SPDX-License-Identifier: GPL-2.0
/*
* GPL HEADER START
*
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 only,
* as published by the Free Software Foundation.
*
* This program 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 version 2 for more details (a copy is included
* in the LICENSE file that accompanied this code).
*
* You should have received a copy of the GNU General Public License
* version 2 along with this program; If not, see
* http://www.gnu.org/licenses/gpl-2.0.html
*
* GPL HEADER END
*/
/*
* Copyright (c) 2007, 2010, Oracle and/or its affiliates. All rights reserved.
* Use is subject to license terms.
*
* Copyright (c) 2011, 2012, Intel Corporation.
*/
/*
* This file is part of Lustre, http://www.lustre.org/
* Lustre is a trademark of Sun Microsystems, Inc.
*
* lustre/include/lustre_lib.h
*
* Basic Lustre library routines.
*/
#ifndef _LUSTRE_LIB_H
#define _LUSTRE_LIB_H
/** \defgroup lib lib
*
* @{
*/
#include <linux/sched/signal.h>
#include <linux/signal.h>
#include <linux/types.h>
#include <linux/libcfs/libcfs.h>
#include <uapi/linux/lustre/lustre_idl.h>
#include <uapi/linux/lustre/lustre_ver.h>
#include <uapi/linux/lustre/lustre_cfg.h>
/* target.c */
struct ptlrpc_request;
struct obd_export;
struct lu_target;
struct l_wait_info;
#include <lustre_ha.h>
#include <lustre_net.h>
#define LI_POISON 0x5a5a5a5a
#if BITS_PER_LONG > 32
# define LL_POISON 0x5a5a5a5a5a5a5a5aL
#else
# define LL_POISON 0x5a5a5a5aL
#endif
#define LP_POISON ((void *)LL_POISON)
int target_pack_pool_reply(struct ptlrpc_request *req);
int do_set_info_async(struct obd_import *imp,
int opcode, int version,
u32 keylen, void *key,
u32 vallen, void *val,
struct ptlrpc_request_set *set);
void target_send_reply(struct ptlrpc_request *req, int rc, int fail_id);
#define LUSTRE_FATAL_SIGS (sigmask(SIGKILL) | sigmask(SIGINT) | \
sigmask(SIGTERM) | sigmask(SIGQUIT) | \
sigmask(SIGALRM))
static inline int l_fatal_signal_pending(struct task_struct *p)
{
return signal_pending(p) && sigtestsetmask(&p->pending.signal, LUSTRE_FATAL_SIGS);
}
/** @} lib */
/* l_wait_event_abortable() is a bit like wait_event_killable()
* except there is a fixed set of signals which will abort:
* LUSTRE_FATAL_SIGS
*/
#define l_wait_event_abortable(wq, condition) \
({ \
sigset_t __blocked; \
int __ret = 0; \
__blocked = cfs_block_sigsinv(LUSTRE_FATAL_SIGS); \
__ret = wait_event_interruptible(wq, condition); \
cfs_restore_sigs(__blocked); \
__ret; \
})
#define l_wait_event_abortable_timeout(wq, condition, timeout) \
({ \
sigset_t __blocked; \
int __ret = 0; \
__blocked = cfs_block_sigsinv(LUSTRE_FATAL_SIGS); \
__ret = wait_event_interruptible_timeout(wq, condition, timeout);\
cfs_restore_sigs(__blocked); \
__ret; \
})
#define l_wait_event_abortable_exclusive(wq, condition) \
({ \
sigset_t __blocked; \
int __ret = 0; \
__blocked = cfs_block_sigsinv(LUSTRE_FATAL_SIGS); \
__ret = wait_event_interruptible_exclusive(wq, condition); \
cfs_restore_sigs(__blocked); \
__ret; \
})
#endif /* _LUSTRE_LIB_H */
|