Annotation of sys/xfs/xfs_dev.h, Revision 1.1.1.1
1.1 nbrk 1: /*
2: * Copyright (c) 1995 - 2001 Kungliga Tekniska Högskolan
3: * (Royal Institute of Technology, Stockholm, Sweden).
4: * All rights reserved.
5: *
6: * Redistribution and use in source and binary forms, with or without
7: * modification, are permitted provided that the following conditions
8: * are met:
9: *
10: * 1. Redistributions of source code must retain the above copyright
11: * notice, this list of conditions and the following disclaimer.
12: *
13: * 2. Redistributions in binary form must reproduce the above copyright
14: * notice, this list of conditions and the following disclaimer in the
15: * documentation and/or other materials provided with the distribution.
16: *
17: * 3. Neither the name of the Institute nor the names of its contributors
18: * may be used to endorse or promote products derived from this software
19: * without specific prior written permission.
20: *
21: * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
22: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24: * ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
25: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31: * SUCH DAMAGE.
32: */
33:
34: /* $arla: xfs_dev.h,v 1.19 2003/01/19 20:53:52 lha Exp $ */
35:
36: #ifndef _xfs_dev_h
37: #define _xfs_dev_h
38:
39: /*
40: * Queues of xfs_links hold outbound messages and processes sleeping
41: * for replies. The last field is used to return error to sleepers and
42: * to keep record of memory to be deallocated when messages have been
43: * delivered or dropped.
44: */
45:
46: struct xfs_link {
47: struct xfs_link *prev, *next;
48: struct xfs_message_header *message;
49: u_int error_or_size; /* error on sleepq and size on
50: * messageq */
51: };
52:
53: struct xfs_channel {
54: struct xfs_link messageq; /* Messages not yet read */
55: struct xfs_link sleepq; /* Waiting for reply message */
56: u_int nsequence;
57: #ifdef __osf__
58: sel_queue_t sel_q;
59: #else
60: struct selinfo selinfo;
61: #endif
62: struct xfs_message_header *message_buffer;
63: int status;
64: #define CHANNEL_OPENED 0x1
65: #define CHANNEL_WAITING 0x2
66: d_thread_t *proc;
67: };
68:
69: extern struct xfs_channel xfs_channel[NNNPFS];
70:
71: /*
72: * These are variant dependent
73: */
74:
75: void xfs_select_wakeup(struct xfs_channel *);
76:
77: int xfs_install_device(void);
78: int xfs_uninstall_device(void);
79:
80: int xfs_install_filesys(void);
81: int xfs_may_uninstall_filesys(void);
82: int xfs_uninstall_filesys(void);
83:
84: int xfs_stat_filesys(void);
85: int xfs_stat_device(void);
86:
87: /*
88: * And these should be generic
89: */
90:
91: void
92: xfs_initq(struct xfs_link *q);
93:
94: int
95: xfs_emptyq(const struct xfs_link *q);
96:
97: int
98: xfs_onq(const struct xfs_link *link);
99:
100: void
101: xfs_appendq(struct xfs_link *q, struct xfs_link *p);
102:
103: void
104: xfs_outq(struct xfs_link *p);
105:
106: int
107: xfs_devopen_common(dev_t dev);
108:
109: #ifndef __osf__ /* XXX - we should do the same for osf */
110: int xfs_devopen(dev_t dev, int flag, int devtype, d_thread_t *proc);
111: int xfs_devclose(dev_t dev, int flag, int devtype, d_thread_t *proc);
112: int xfs_devioctl(dev_t dev, u_long cmd, caddr_t data, int flags,
113: d_thread_t *p);
114: #ifdef HAVE_THREE_ARGUMENT_SELRECORD
115: int xfs_devselect(dev_t dev, int which, void *wql, d_thread_t *p);
116: #else
117: int xfs_devselect(dev_t dev, int which, d_thread_t *p);
118: #endif
119: int xfs_devpoll(dev_t dev, int events, d_thread_t *p);
120: #endif /* ! __osf__ */
121:
122: int
123: xfs_devclose_common(dev_t dev, d_thread_t *p);
124:
125: int
126: xfs_devread(dev_t dev, struct uio * uiop, int ioflag);
127:
128: int
129: xfs_devwrite(dev_t dev, struct uio *uiop, int ioflag);
130:
131: int
132: xfs_message_send(int fd, struct xfs_message_header * message, u_int size);
133:
134: int
135: xfs_message_rpc(int fd, struct xfs_message_header * message, u_int size,
136: d_thread_t *p);
137:
138: int
139: xfs_message_receive(int fd,
140: struct xfs_message_header *message,
141: u_int size,
142: d_thread_t *p);
143:
144: int
145: xfs_message_wakeup(int fd,
146: struct xfs_message_wakeup *message,
147: u_int size,
148: d_thread_t *p);
149:
150: int
151: xfs_message_wakeup_data(int fd,
152: struct xfs_message_wakeup_data * message,
153: u_int size,
154: d_thread_t *p);
155:
156: int
157: xfs_uprintf_device(void);
158:
159: int
160: xfs_is_xfs_dev (dev_t dev);
161:
162: #endif /* _xfs_dev_h */
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