WebSVN – HelenOS – Diff – /branches/network/uspace/srv/fs/devfs/devfs.c


/*
 * Copyright (c) 2009 Martin Decky
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * - Redistributions of source code must retain the above copyright
 *   notice, this list of conditions and the following disclaimer.
 * - Redistributions in binary form must reproduce the above copyright
 *   notice, this list of conditions and the following disclaimer in the
 *   documentation and/or other materials provided with the distribution.
 * - The name of the author may not be used to endorse or promote products
 *   derived from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */
 
/** @addtogroup fs
 * @{
 */
 
/**
 * @file devfs.c
 * @brief Devices file system.
 *
 * Every device registered to device mapper is represented as a file in this
 * file system.
 */
 
#include <stdio.h>
#include <ipc/ipc.h>
#include <ipc/services.h>
#include <async.h>
#include <errno.h>
#include <libfs.h>
#include "devfs.h"
#include "devfs_ops.h"
 
#define NAME  "devfs"
 
static vfs_info_t devfs_vfs_info = {
    .name = "devfs",
};
 
fs_reg_t devfs_reg;
 
static void devfs_connection(ipc_callid_t iid, ipc_call_t *icall)
{
    if (iid)
        ipc_answer_0(iid, EOK);
   
    while (true) {
        ipc_call_t call;
        ipc_callid_t callid = async_get_call(&call);
       
        switch  (IPC_GET_METHOD(call)) {
        case IPC_M_PHONE_HUNGUP:
            return;
        case VFS_OUT_MOUNTED:
            devfs_mounted(callid, &call);
            break;
        case VFS_OUT_MOUNT:
            devfs_mount(callid, &call);
            break;
        case VFS_OUT_LOOKUP:
            devfs_lookup(callid, &call);
            break;
        case VFS_OUT_OPEN_NODE:
            devfs_open_node(callid, &call);
            break;
        case VFS_OUT_STAT:
            devfs_stat(callid, &call);
            break;
        case VFS_OUT_READ:
            devfs_read(callid, &call);
            break;
        case VFS_OUT_WRITE:
            devfs_write(callid, &call);
            break;
        case VFS_OUT_TRUNCATE:
            devfs_truncate(callid, &call);
            break;
        case VFS_OUT_CLOSE:
            devfs_close(callid, &call);
            break;
        case VFS_OUT_SYNC:
            devfs_sync(callid, &call);
            break;
        case VFS_OUT_DESTROY:
            devfs_destroy(callid, &call);
            break;
        default:
            ipc_answer_0(callid, ENOTSUP);
            break;
        }
    }
}
 
int main(int argc, char *argv[])
{
    printf(NAME ": HelenOS Device Filesystem\n");
   
    if (!devfs_init()) {
        printf(NAME ": failed to initialize devfs\n");
        return -1;
    }
   
    int vfs_phone = ipc_connect_me_to_blocking(PHONE_NS, SERVICE_VFS, 0, 0);
    if (vfs_phone < EOK) {
        printf(NAME ": Unable to connect to VFS\n");
        return -1;
    }
   
    int rc = fs_register(vfs_phone, &devfs_reg, &devfs_vfs_info,
        devfs_connection);
    if (rc != EOK) {
        printf(NAME ": Failed to register file system (%d)\n", rc);
        return rc;
    }
   
    printf(NAME ": Accepting connections\n");
    async_manager();
   
    /* Not reached */
    return 0;
}
 
/**
 * @}
 */
 

Rev 4581	Rev 4718
1	/*	1	/*
2	* Copyright (c) 2009 Martin Decky	2	* Copyright (c) 2009 Martin Decky
3	* All rights reserved.	3	* All rights reserved.
4	*	4	*
5	* Redistribution and use in source and binary forms, with or without	5	* Redistribution and use in source and binary forms, with or without
6	* modification, are permitted provided that the following conditions	6	* modification, are permitted provided that the following conditions
7	* are met:	7	* are met:
8	*	8	*
9	* - Redistributions of source code must retain the above copyright	9	* - Redistributions of source code must retain the above copyright
10	* notice, this list of conditions and the following disclaimer.	10	* notice, this list of conditions and the following disclaimer.
11	* - Redistributions in binary form must reproduce the above copyright	11	* - Redistributions in binary form must reproduce the above copyright
12	* notice, this list of conditions and the following disclaimer in the	12	* notice, this list of conditions and the following disclaimer in the
13	* documentation and/or other materials provided with the distribution.	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	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.	15	* derived from this software without specific prior written permission.
16	*	16	*
17	* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR	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	18	* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
19	* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.	19	* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
20	* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,	20	* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
21	* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT	21	* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
22	* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,	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	23	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT	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	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.	26	* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27	*/	27	*/
28		28
29	/** @addtogroup fs	29	/** @addtogroup fs
30	* @{	30	* @{
31	*/	31	*/
32		32
33	/**	33	/**
34	* @file devfs.c	34	* @file devfs.c
35	* @brief Devices file system.	35	* @brief Devices file system.
36	*	36	*
37	* Every device registered to device mapper is represented as a file in this	37	* Every device registered to device mapper is represented as a file in this
38	* file system.	38	* file system.
39	*/	39	*/
40		40
41	#include <stdio.h>	41	#include <stdio.h>
42	#include <ipc/ipc.h>	42	#include <ipc/ipc.h>
43	#include <ipc/services.h>	43	#include <ipc/services.h>
44	#include <async.h>	44	#include <async.h>
45	#include <errno.h>	45	#include <errno.h>
46	#include <libfs.h>	46	#include <libfs.h>
47	#include "devfs.h"	47	#include "devfs.h"
48	#include "devfs_ops.h"	48	#include "devfs_ops.h"
49		49
50	#define NAME "devfs"	50	#define NAME "devfs"
51		51
52	static vfs_info_t devfs_vfs_info = {	52	static vfs_info_t devfs_vfs_info = {
53	.name = "devfs",	53	.name = "devfs",
54	};	54	};
55		55
56	fs_reg_t devfs_reg;	56	fs_reg_t devfs_reg;
57		57
58	static void devfs_connection(ipc_callid_t iid, ipc_call_t *icall)	58	static void devfs_connection(ipc_callid_t iid, ipc_call_t *icall)
59	{	59	{
60	if (iid)	60	if (iid)
61	ipc_answer_0(iid, EOK);	61	ipc_answer_0(iid, EOK);
62		62
63	while (true) {	63	while (true) {
64	ipc_call_t call;	64	ipc_call_t call;
65	ipc_callid_t callid = async_get_call(&call);	65	ipc_callid_t callid = async_get_call(&call);
66		66
67	switch (IPC_GET_METHOD(call)) {	67	switch (IPC_GET_METHOD(call)) {
68	case IPC_M_PHONE_HUNGUP:	68	case IPC_M_PHONE_HUNGUP:
69	return;	69	return;
70	case VFS_MOUNTED:	70	case VFS_OUT_MOUNTED:
71	devfs_mounted(callid, &call);	71	devfs_mounted(callid, &call);
72	break;	72	break;
73	case VFS_MOUNT:	73	case VFS_OUT_MOUNT:
74	devfs_mount(callid, &call);	74	devfs_mount(callid, &call);
75	break;	75	break;
76	case VFS_LOOKUP:	76	case VFS_OUT_LOOKUP:
77	devfs_lookup(callid, &call);	77	devfs_lookup(callid, &call);
78	break;	78	break;
79	case VFS_OPEN_NODE:	79	case VFS_OUT_OPEN_NODE:
80	devfs_open_node(callid, &call);	80	devfs_open_node(callid, &call);
81	break;	81	break;
82	case VFS_DEVICE:	82	case VFS_OUT_STAT:
83	devfs_device(callid, &call);	83	devfs_stat(callid, &call);
84	break;	84	break;
85	case VFS_READ:	85	case VFS_OUT_READ:
86	devfs_read(callid, &call);	86	devfs_read(callid, &call);
87	break;	87	break;
88	case VFS_WRITE:	88	case VFS_OUT_WRITE:
89	devfs_write(callid, &call);	89	devfs_write(callid, &call);
90	break;	90	break;
91	case VFS_TRUNCATE:	91	case VFS_OUT_TRUNCATE:
92	devfs_truncate(callid, &call);	92	devfs_truncate(callid, &call);
93	break;	93	break;
94	case VFS_CLOSE:	94	case VFS_OUT_CLOSE:
95	devfs_close(callid, &call);	95	devfs_close(callid, &call);
96	break;	96	break;
97	case VFS_SYNC:	97	case VFS_OUT_SYNC:
98	devfs_sync(callid, &call);	98	devfs_sync(callid, &call);
99	break;	99	break;
100	case VFS_DESTROY:	100	case VFS_OUT_DESTROY:
101	devfs_destroy(callid, &call);	101	devfs_destroy(callid, &call);
102	break;	102	break;
103	default:	103	default:
104	ipc_answer_0(callid, ENOTSUP);	104	ipc_answer_0(callid, ENOTSUP);
105	break;	105	break;
106	}	106	}
107	}	107	}
108	}	108	}
109		109
110	int main(int argc, char *argv[])	110	int main(int argc, char *argv[])
111	{	111	{
112	printf(NAME ": HelenOS Device Filesystem\n");	112	printf(NAME ": HelenOS Device Filesystem\n");
113		113
114	if (!devfs_init()) {	114	if (!devfs_init()) {
115	printf(NAME ": failed to initialize devfs\n");	115	printf(NAME ": failed to initialize devfs\n");
116	return -1;	116	return -1;
117	}	117	}
118		118
119	int vfs_phone = ipc_connect_me_to_blocking(PHONE_NS, SERVICE_VFS, 0, 0);	119	int vfs_phone = ipc_connect_me_to_blocking(PHONE_NS, SERVICE_VFS, 0, 0);
120	if (vfs_phone < EOK) {	120	if (vfs_phone < EOK) {
121	printf(NAME ": Unable to connect to VFS\n");	121	printf(NAME ": Unable to connect to VFS\n");
122	return -1;	122	return -1;
123	}	123	}
124		124
125	int rc = fs_register(vfs_phone, &devfs_reg, &devfs_vfs_info,	125	int rc = fs_register(vfs_phone, &devfs_reg, &devfs_vfs_info,
126	devfs_connection);	126	devfs_connection);
127	if (rc != EOK) {	127	if (rc != EOK) {
128	printf(NAME ": Failed to register file system (%d)\n", rc);	128	printf(NAME ": Failed to register file system (%d)\n", rc);
129	return rc;	129	return rc;
130	}	130	}
131		131
132	printf(NAME ": Accepting connections\n");	132	printf(NAME ": Accepting connections\n");
133	async_manager();	133	async_manager();
134		134
135	/* Not reached */	135	/* Not reached */
136	return 0;	136	return 0;
137	}	137	}
138		138
139	/**	139	/**
140	* @}	140	* @}
141	*/	141	*/
142		142

Subversion Repositories HelenOS

(root)/branches/network/uspace/srv/fs/devfs/devfs.c – Rev 4581 → 4718