source: mainline/uspace/srv/vfs/vfs.c@ 667a4f8

lfn serial ticket/834-toolchain-update topic/msim-upgrade topic/simplify-dev-export
Last change on this file since 667a4f8 was ffa2c8ef, checked in by Martin Decky <martin@…>, 15 years ago

do not intermix low-level IPC methods with async framework methods
  • Property mode set to 100644
File size: 4.5 KB
Line 
1/*
2 * Copyright (c) 2008 Jakub Jermar
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 *
9 * - Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 * - Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
14 * - The name of the author may not be used to endorse or promote products
15 * derived from this software without specific prior written permission.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
18 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
19 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
20 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
21 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
22 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27 */
28
29/** @addtogroup fs
30 * @{
31 */
32
33/**
34 * @file vfs.c
35 * @brief VFS service for HelenOS.
36 */
37
38#include <ipc/services.h>
39#include <ipc/ns.h>
40#include <async.h>
41#include <errno.h>
42#include <stdio.h>
43#include <bool.h>
44#include <str.h>
45#include <as.h>
46#include <atomic.h>
47#include "vfs.h"
48
49#define NAME "vfs"
50
51static void vfs_connection(ipc_callid_t iid, ipc_call_t *icall)
52{
53 bool keep_on_going = true;
54
55 /*
56 * The connection was opened via the IPC_CONNECT_ME_TO call.
57 * This call needs to be answered.
58 */
59 async_answer_0(iid, EOK);
60
61 while (keep_on_going) {
62 ipc_call_t call;
63 ipc_callid_t callid = async_get_call(&call);
64
65 switch (IPC_GET_IMETHOD(call)) {
66 case IPC_M_PHONE_HUNGUP:
67 keep_on_going = false;
68 break;
69 case VFS_IN_REGISTER:
70 vfs_register(callid, &call);
71 keep_on_going = false;
72 break;
73 case VFS_IN_MOUNT:
74 vfs_mount(callid, &call);
75 break;
76 case VFS_IN_UNMOUNT:
77 vfs_unmount(callid, &call);
78 break;
79 case VFS_IN_OPEN:
80 vfs_open(callid, &call);
81 break;
82 case VFS_IN_OPEN_NODE:
83 vfs_open_node(callid, &call);
84 break;
85 case VFS_IN_CLOSE:
86 vfs_close(callid, &call);
87 break;
88 case VFS_IN_READ:
89 vfs_read(callid, &call);
90 break;
91 case VFS_IN_WRITE:
92 vfs_write(callid, &call);
93 break;
94 case VFS_IN_SEEK:
95 vfs_seek(callid, &call);
96 break;
97 case VFS_IN_TRUNCATE:
98 vfs_truncate(callid, &call);
99 break;
100 case VFS_IN_FSTAT:
101 vfs_fstat(callid, &call);
102 break;
103 case VFS_IN_STAT:
104 vfs_stat(callid, &call);
105 break;
106 case VFS_IN_MKDIR:
107 vfs_mkdir(callid, &call);
108 break;
109 case VFS_IN_UNLINK:
110 vfs_unlink(callid, &call);
111 break;
112 case VFS_IN_RENAME:
113 vfs_rename(callid, &call);
114 break;
115 case VFS_IN_SYNC:
116 vfs_sync(callid, &call);
117 break;
118 case VFS_IN_DUP:
119 vfs_dup(callid, &call);
120 default:
121 async_answer_0(callid, ENOTSUP);
122 break;
123 }
124 }
125
126 /*
127 * Open files for this client will be cleaned up when its last
128 * connection fibril terminates.
129 */
130}
131
132int main(int argc, char **argv)
133{
134 printf(NAME ": HelenOS VFS server\n");
135
136 /*
137 * Initialize VFS node hash table.
138 */
139 if (!vfs_nodes_init()) {
140 printf(NAME ": Failed to initialize VFS node hash table\n");
141 return ENOMEM;
142 }
143
144 /*
145 * Allocate and initialize the Path Lookup Buffer.
146 */
147 plb = as_get_mappable_page(PLB_SIZE);
148 if (!plb) {
149 printf(NAME ": Cannot allocate a mappable piece of address space\n");
150 return ENOMEM;
151 }
152
153 if (as_area_create(plb, PLB_SIZE, AS_AREA_READ | AS_AREA_WRITE |
154 AS_AREA_CACHEABLE) != plb) {
155 printf(NAME ": Cannot create address space area\n");
156 return ENOMEM;
157 }
158 memset(plb, 0, PLB_SIZE);
159
160 /*
161 * Set client data constructor and destructor.
162 */
163 async_set_client_data_constructor(vfs_client_data_create);
164 async_set_client_data_destructor(vfs_client_data_destroy);
165
166 /*
167 * Set a connection handling function/fibril.
168 */
169 async_set_client_connection(vfs_connection);
170
171 /*
172 * Register at the naming service.
173 */
174 if (service_register(SERVICE_VFS) != EOK) {
175 printf("%s: Cannot register VFS service\n", NAME);
176 return EINVAL;
177 }
178
179 /*
180 * Start accepting connections.
181 */
182 printf(NAME ": Accepting connections\n");
183 async_manager();
184 return 0;
185}
186
187/**
188 * @}
189 */
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