source: mainline/uspace/srv/vfs/vfs.c@ 007e6efa

lfn serial ticket/834-toolchain-update topic/msim-upgrade topic/simplify-dev-export
Last change on this file since 007e6efa was 007e6efa, checked in by Martin Decky <martin@…>, 14 years ago
  • libc routines for registering services and connecting to services via NS
  • async_connect_to_me()
  • 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/ipc.h>
39#include <ipc/services.h>
40#include <ipc/ns.h>
41#include <async.h>
42#include <errno.h>
43#include <stdio.h>
44#include <bool.h>
45#include <str.h>
46#include <as.h>
47#include <atomic.h>
48#include "vfs.h"
49
50#define NAME "vfs"
51
52static void vfs_connection(ipc_callid_t iid, ipc_call_t *icall)
53{
54 bool keep_on_going = true;
55
56 /*
57 * The connection was opened via the IPC_CONNECT_ME_TO call.
58 * This call needs to be answered.
59 */
60 ipc_answer_0(iid, EOK);
61
62 while (keep_on_going) {
63 ipc_call_t call;
64 ipc_callid_t callid = async_get_call(&call);
65
66 switch (IPC_GET_IMETHOD(call)) {
67 case IPC_M_PHONE_HUNGUP:
68 keep_on_going = false;
69 break;
70 case VFS_IN_REGISTER:
71 vfs_register(callid, &call);
72 keep_on_going = false;
73 break;
74 case VFS_IN_MOUNT:
75 vfs_mount(callid, &call);
76 break;
77 case VFS_IN_UNMOUNT:
78 vfs_unmount(callid, &call);
79 break;
80 case VFS_IN_OPEN:
81 vfs_open(callid, &call);
82 break;
83 case VFS_IN_OPEN_NODE:
84 vfs_open_node(callid, &call);
85 break;
86 case VFS_IN_CLOSE:
87 vfs_close(callid, &call);
88 break;
89 case VFS_IN_READ:
90 vfs_read(callid, &call);
91 break;
92 case VFS_IN_WRITE:
93 vfs_write(callid, &call);
94 break;
95 case VFS_IN_SEEK:
96 vfs_seek(callid, &call);
97 break;
98 case VFS_IN_TRUNCATE:
99 vfs_truncate(callid, &call);
100 break;
101 case VFS_IN_FSTAT:
102 vfs_fstat(callid, &call);
103 break;
104 case VFS_IN_STAT:
105 vfs_stat(callid, &call);
106 break;
107 case VFS_IN_MKDIR:
108 vfs_mkdir(callid, &call);
109 break;
110 case VFS_IN_UNLINK:
111 vfs_unlink(callid, &call);
112 break;
113 case VFS_IN_RENAME:
114 vfs_rename(callid, &call);
115 break;
116 case VFS_IN_SYNC:
117 vfs_sync(callid, &call);
118 break;
119 case VFS_IN_DUP:
120 vfs_dup(callid, &call);
121 default:
122 ipc_answer_0(callid, ENOTSUP);
123 break;
124 }
125 }
126
127 /*
128 * Open files for this client will be cleaned up when its last
129 * connection fibril terminates.
130 */
131}
132
133int main(int argc, char **argv)
134{
135 printf(NAME ": HelenOS VFS server\n");
136
137 /*
138 * Initialize VFS node hash table.
139 */
140 if (!vfs_nodes_init()) {
141 printf(NAME ": Failed to initialize VFS node hash table\n");
142 return ENOMEM;
143 }
144
145 /*
146 * Allocate and initialize the Path Lookup Buffer.
147 */
148 plb = as_get_mappable_page(PLB_SIZE);
149 if (!plb) {
150 printf(NAME ": Cannot allocate a mappable piece of address space\n");
151 return ENOMEM;
152 }
153
154 if (as_area_create(plb, PLB_SIZE, AS_AREA_READ | AS_AREA_WRITE |
155 AS_AREA_CACHEABLE) != plb) {
156 printf(NAME ": Cannot create address space area\n");
157 return ENOMEM;
158 }
159 memset(plb, 0, PLB_SIZE);
160
161 /*
162 * Set client data constructor and destructor.
163 */
164 async_set_client_data_constructor(vfs_client_data_create);
165 async_set_client_data_destructor(vfs_client_data_destroy);
166
167 /*
168 * Set a connection handling function/fibril.
169 */
170 async_set_client_connection(vfs_connection);
171
172 /*
173 * Register at the naming service.
174 */
175 if (service_register(SERVICE_VFS) != EOK) {
176 printf("%s: Cannot register VFS service\n", NAME);
177 return EINVAL;
178 }
179
180 /*
181 * Start accepting connections.
182 */
183 printf(NAME ": Accepting connections\n");
184 async_manager();
185 return 0;
186}
187
188/**
189 * @}
190 */
Note: See TracBrowser for help on using the repository browser.