WebSVN – HelenOS – Diff – /branches/dd/uspace/lib/libc/generic/vfs/vfs.c


/*
 * Copyright (c) 2008 Jakub Jermar
 * 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 libc
 * @{
 */
/** @file
 */
 
#include <vfs.h>
#include <stdlib.h>
#include <unistd.h>
#include <dirent.h>
#include <fcntl.h>
#include <sys/stat.h>
#include <sys/types.h>
#include <ipc/ipc.h>
#include <ipc/services.h>
#include <async.h>
#include <atomic.h>
#include <futex.h>
#include <errno.h>
#include <string.h>
#include "../../srv/vfs/vfs.h"
 
int vfs_phone = -1;
atomic_t vfs_phone_futex = FUTEX_INITIALIZER;
 
static int vfs_connect(void)
{
    if (vfs_phone < 0)
        vfs_phone = ipc_connect_me_to(PHONE_NS, SERVICE_VFS, 0, 0);
    return vfs_phone;
}
 
int mount(const char *fs_name, const char *mp, const char *dev)
{
    int res;
    ipcarg_t rc;
    aid_t req;
 
    int dev_handle = 0; /* TODO */
 
    futex_down(&vfs_phone_futex);
    async_serialize_start();
    if (vfs_phone < 0) {
        res = vfs_connect();
        if (res < 0) {
            async_serialize_end();
            futex_up(&vfs_phone_futex);
            return res;
        }
    }
    req = async_send_1(vfs_phone, VFS_MOUNT, dev_handle, NULL);
    rc = ipc_data_write_start(vfs_phone, (void *)fs_name, strlen(fs_name));
    if (rc != EOK) {
        async_wait_for(req, NULL);
        async_serialize_end();
        futex_up(&vfs_phone_futex);
        return (int) rc;
    }
    rc = ipc_data_write_start(vfs_phone, (void *)mp, strlen(mp));
    if (rc != EOK) {
        async_wait_for(req, NULL);
        async_serialize_end();
        futex_up(&vfs_phone_futex);
        return (int) rc;
    }
    async_wait_for(req, &rc);
    async_serialize_end();
    futex_up(&vfs_phone_futex);
    return (int) rc;
}
 
static int _open(const char *path, int lflag, int oflag, ...)
{
    int res;
    ipcarg_t rc;
    ipc_call_t answer;
    aid_t req;
   
    futex_down(&vfs_phone_futex);
    async_serialize_start();
    if (vfs_phone < 0) {
        res = vfs_connect();
        if (res < 0) {
            async_serialize_end();
            futex_up(&vfs_phone_futex);
            return res;
        }
    }
    req = async_send_3(vfs_phone, VFS_OPEN, lflag, oflag, 0, &answer);
    rc = ipc_data_write_start(vfs_phone, path, strlen(path));
    if (rc != EOK) {
        async_wait_for(req, NULL);
        async_serialize_end();
        futex_up(&vfs_phone_futex);
        return (int) rc;
    }
    async_wait_for(req, &rc);
    async_serialize_end();
    futex_up(&vfs_phone_futex);
    return (int) IPC_GET_ARG1(answer);
}
 
int open(const char *path, int oflag, ...)
{
    return _open(path, L_FILE, oflag);
}
 
int close(int fildes)
{
    return 0;   /* TODO */
}
 
ssize_t read(int fildes, void *buf, size_t nbyte)
{
    int res;
    ipcarg_t rc;
    ipc_call_t answer;
    aid_t req;
 
    futex_down(&vfs_phone_futex);
    async_serialize_start();
    if (vfs_phone < 0) {
        res = vfs_connect();
        if (res < 0) {
            async_serialize_end();
            futex_up(&vfs_phone_futex);
            return res;
        }
    }
    req = async_send_1(vfs_phone, VFS_READ, fildes, &answer);
    if (ipc_data_read_start(vfs_phone, (void *)buf, nbyte) != EOK) {
        async_wait_for(req, NULL);
        async_serialize_end();
        futex_up(&vfs_phone_futex);
        return (ssize_t) rc;
    }
    async_wait_for(req, &rc);
    async_serialize_end();
    futex_up(&vfs_phone_futex);
    return (ssize_t) IPC_GET_ARG1(answer);
}
 
ssize_t write(int fildes, const void *buf, size_t nbyte)
{
    int res;
    ipcarg_t rc;
    ipc_call_t answer;
    aid_t req;
 
    futex_down(&vfs_phone_futex);
    async_serialize_start();
    if (vfs_phone < 0) {
        res = vfs_connect();
        if (res < 0) {
            async_serialize_end();
            futex_up(&vfs_phone_futex);
            return res;
        }
    }
    req = async_send_1(vfs_phone, VFS_WRITE, fildes, &answer);
    if (ipc_data_write_start(vfs_phone, (void *)buf, nbyte) != EOK) {
        async_wait_for(req, NULL);
        async_serialize_end();
        futex_up(&vfs_phone_futex);
        return (ssize_t) rc;
    }
    async_wait_for(req, &rc);
    async_serialize_end();
    futex_up(&vfs_phone_futex);
    return (ssize_t) IPC_GET_ARG1(answer);
}
 
off_t lseek(int fildes, off_t offset, int whence)
{
    int res;
    ipcarg_t rc;
 
    futex_down(&vfs_phone_futex);
    async_serialize_start();
    if (vfs_phone < 0) {
        res = vfs_connect();
        if (res < 0) {
            async_serialize_end();
            futex_up(&vfs_phone_futex);
            return res;
        }
    }
       
    off_t newoffs;
    rc = async_req_3_1(vfs_phone, VFS_SEEK, fildes, offset, whence,
        (ipcarg_t)&newoffs);
 
    async_serialize_end();
    futex_up(&vfs_phone_futex);
 
    if (rc != EOK)
        return (off_t) -1;
   
    return newoffs;
}
 
int ftruncate(int fildes, off_t length)
{
    int res;
    ipcarg_t rc;
   
    futex_down(&vfs_phone_futex);
    async_serialize_start();
    if (vfs_phone < 0) {
        res = vfs_connect();
        if (res < 0) {
            async_serialize_end();
            futex_up(&vfs_phone_futex);
            return res;
        }
    }
    rc = async_req_2_0(vfs_phone, VFS_TRUNCATE, fildes, length);
    async_serialize_end();
    futex_up(&vfs_phone_futex);
    return (int) rc;
}
 
DIR *opendir(const char *dirname)
{
    DIR *dirp = malloc(sizeof(DIR));
    if (!dirp)
        return NULL;
    dirp->fd = _open(dirname, L_DIRECTORY, 0);
    if (dirp->fd < 0) {
        free(dirp);
        return NULL;
    }
    return dirp;
}
 
struct dirent *readdir(DIR *dirp)
{
    ssize_t len = read(dirp->fd, &dirp->res.d_name[0], NAME_MAX + 1);
    if (len <= 0)
        return NULL;
    return &dirp->res;
}
 
void rewinddir(DIR *dirp)
{
    (void) lseek(dirp->fd, 0, SEEK_SET);
}
 
int closedir(DIR *dirp)
{
    (void) close(dirp->fd);
    free(dirp);
    return 0;
}
 
int mkdir(const char *path, mode_t mode)
{
    int res;
    ipcarg_t rc;
    ipc_call_t answer;
    aid_t req;
   
    futex_down(&vfs_phone_futex);
    async_serialize_start();
    if (vfs_phone < 0) {
        res = vfs_connect();
        if (res < 0) {
            async_serialize_end();
            futex_up(&vfs_phone_futex);
            return res;
        }
    }
    req = async_send_1(vfs_phone, VFS_MKDIR, mode, &answer);
    rc = ipc_data_write_start(vfs_phone, path, strlen(path));
    if (rc != EOK) {
        async_wait_for(req, NULL);
        async_serialize_end();
        futex_up(&vfs_phone_futex);
        return (int) rc;
    }
    async_wait_for(req, &rc);
    async_serialize_end();
    futex_up(&vfs_phone_futex);
    return EOK;
}
 
/** @}
 */
 

Rev 2700	Rev 2707
1	/*	1	/*
2	* Copyright (c) 2008 Jakub Jermar	2	* Copyright (c) 2008 Jakub Jermar
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 libc	29	/** @addtogroup libc
30	* @{	30	* @{
31	*/	31	*/
32	/** @file	32	/** @file
33	*/	33	*/
34		34
35	#include <vfs.h>	35	#include <vfs.h>
36	#include <stdlib.h>	36	#include <stdlib.h>
37	#include <unistd.h>	37	#include <unistd.h>
38	#include <dirent.h>	38	#include <dirent.h>
39	#include <fcntl.h>	39	#include <fcntl.h>
-		40	#include <sys/stat.h>
-		41	#include <sys/types.h>
40	#include <ipc/ipc.h>	42	#include <ipc/ipc.h>
41	#include <ipc/services.h>	43	#include <ipc/services.h>
42	#include <async.h>	44	#include <async.h>
43	#include <atomic.h>	45	#include <atomic.h>
44	#include <futex.h>	46	#include <futex.h>
45	#include <errno.h>	47	#include <errno.h>
46	#include <string.h>	48	#include <string.h>
47	#include "../../srv/vfs/vfs.h"	49	#include "../../srv/vfs/vfs.h"
48		50
49	int vfs_phone = -1;	51	int vfs_phone = -1;
50	atomic_t vfs_phone_futex = FUTEX_INITIALIZER;	52	atomic_t vfs_phone_futex = FUTEX_INITIALIZER;
51		53
52	static int vfs_connect(void)	54	static int vfs_connect(void)
53	{	55	{
54	if (vfs_phone < 0)	56	if (vfs_phone < 0)
55	vfs_phone = ipc_connect_me_to(PHONE_NS, SERVICE_VFS, 0, 0);	57	vfs_phone = ipc_connect_me_to(PHONE_NS, SERVICE_VFS, 0, 0);
56	return vfs_phone;	58	return vfs_phone;
57	}	59	}
58		60
59	int mount(const char fs_name, const char mp, const char *dev)	61	int mount(const char fs_name, const char mp, const char *dev)
60	{	62	{
61	int res;	63	int res;
62	ipcarg_t rc;	64	ipcarg_t rc;
63	aid_t req;	65	aid_t req;
64		66
65	int dev_handle = 0; /* TODO */	67	int dev_handle = 0; /* TODO */
66		68
67	futex_down(&vfs_phone_futex);	69	futex_down(&vfs_phone_futex);
68	async_serialize_start();	70	async_serialize_start();
69	if (vfs_phone < 0) {	71	if (vfs_phone < 0) {
70	res = vfs_connect();	72	res = vfs_connect();
71	if (res < 0) {	73	if (res < 0) {
72	async_serialize_end();	74	async_serialize_end();
73	futex_up(&vfs_phone_futex);	75	futex_up(&vfs_phone_futex);
74	return res;	76	return res;
75	}	77	}
76	}	78	}
77	req = async_send_1(vfs_phone, VFS_MOUNT, dev_handle, NULL);	79	req = async_send_1(vfs_phone, VFS_MOUNT, dev_handle, NULL);
78	rc = ipc_data_write_start(vfs_phone, (void *)fs_name, strlen(fs_name));	80	rc = ipc_data_write_start(vfs_phone, (void *)fs_name, strlen(fs_name));
79	if (rc != EOK) {	81	if (rc != EOK) {
80	async_wait_for(req, NULL);	82	async_wait_for(req, NULL);
81	async_serialize_end();	83	async_serialize_end();
82	futex_up(&vfs_phone_futex);	84	futex_up(&vfs_phone_futex);
83	return (int) rc;	85	return (int) rc;
84	}	86	}
85	rc = ipc_data_write_start(vfs_phone, (void *)mp, strlen(mp));	87	rc = ipc_data_write_start(vfs_phone, (void *)mp, strlen(mp));
86	if (rc != EOK) {	88	if (rc != EOK) {
87	async_wait_for(req, NULL);	89	async_wait_for(req, NULL);
88	async_serialize_end();	90	async_serialize_end();
89	futex_up(&vfs_phone_futex);	91	futex_up(&vfs_phone_futex);
90	return (int) rc;	92	return (int) rc;
91	}	93	}
92	async_wait_for(req, &rc);	94	async_wait_for(req, &rc);
93	async_serialize_end();	95	async_serialize_end();
94	futex_up(&vfs_phone_futex);	96	futex_up(&vfs_phone_futex);
95	return (int) rc;	97	return (int) rc;
96	}	98	}
97		99
98	static int _open(const char *path, int lflag, int oflag, ...)	100	static int _open(const char *path, int lflag, int oflag, ...)
99	{	101	{
100	int res;	102	int res;
101	ipcarg_t rc;	103	ipcarg_t rc;
102	ipc_call_t answer;	104	ipc_call_t answer;
103	aid_t req;	105	aid_t req;
104		106
105	futex_down(&vfs_phone_futex);	107	futex_down(&vfs_phone_futex);
106	async_serialize_start();	108	async_serialize_start();
107	if (vfs_phone < 0) {	109	if (vfs_phone < 0) {
108	res = vfs_connect();	110	res = vfs_connect();
109	if (res < 0) {	111	if (res < 0) {
110	async_serialize_end();	112	async_serialize_end();
111	futex_up(&vfs_phone_futex);	113	futex_up(&vfs_phone_futex);
112	return res;	114	return res;
113	}	115	}
114	}	116	}
115	req = async_send_3(vfs_phone, VFS_OPEN, lflag, oflag, 0, &answer);	117	req = async_send_3(vfs_phone, VFS_OPEN, lflag, oflag, 0, &answer);
116	rc = ipc_data_write_start(vfs_phone, path, strlen(path));	118	rc = ipc_data_write_start(vfs_phone, path, strlen(path));
117	if (rc != EOK) {	119	if (rc != EOK) {
118	async_wait_for(req, NULL);	120	async_wait_for(req, NULL);
119	async_serialize_end();	121	async_serialize_end();
120	futex_up(&vfs_phone_futex);	122	futex_up(&vfs_phone_futex);
121	return (int) rc;	123	return (int) rc;
122	}	124	}
123	async_wait_for(req, &rc);	125	async_wait_for(req, &rc);
124	async_serialize_end();	126	async_serialize_end();
125	futex_up(&vfs_phone_futex);	127	futex_up(&vfs_phone_futex);
126	return (int) IPC_GET_ARG1(answer);	128	return (int) IPC_GET_ARG1(answer);
127	}	129	}
128		130
129	int open(const char *path, int oflag, ...)	131	int open(const char *path, int oflag, ...)
130	{	132	{
131	return _open(path, L_FILE, oflag);	133	return _open(path, L_FILE, oflag);
132	}	134	}
133		135
-		136	int close(int fildes)
-		137	{
-		138	return 0; /* TODO */
-		139	}
-		140
134	ssize_t read(int fildes, void *buf, size_t nbyte)	141	ssize_t read(int fildes, void *buf, size_t nbyte)
135	{	142	{
136	int res;	143	int res;
137	ipcarg_t rc;	144	ipcarg_t rc;
138	ipc_call_t answer;	145	ipc_call_t answer;
139	aid_t req;	146	aid_t req;
140		147
141	futex_down(&vfs_phone_futex);	148	futex_down(&vfs_phone_futex);
142	async_serialize_start();	149	async_serialize_start();
143	if (vfs_phone < 0) {	150	if (vfs_phone < 0) {
144	res = vfs_connect();	151	res = vfs_connect();
145	if (res < 0) {	152	if (res < 0) {
146	async_serialize_end();	153	async_serialize_end();
147	futex_up(&vfs_phone_futex);	154	futex_up(&vfs_phone_futex);
148	return res;	155	return res;
149	}	156	}
150	}	157	}
151	req = async_send_1(vfs_phone, VFS_READ, fildes, &answer);	158	req = async_send_1(vfs_phone, VFS_READ, fildes, &answer);
152	if (ipc_data_read_start(vfs_phone, (void *)buf, nbyte) != EOK) {	159	if (ipc_data_read_start(vfs_phone, (void *)buf, nbyte) != EOK) {
153	async_wait_for(req, NULL);	160	async_wait_for(req, NULL);
154	async_serialize_end();	161	async_serialize_end();
155	futex_up(&vfs_phone_futex);	162	futex_up(&vfs_phone_futex);
156	return (ssize_t) rc;	163	return (ssize_t) rc;
157	}	164	}
158	async_wait_for(req, &rc);	165	async_wait_for(req, &rc);
159	async_serialize_end();	166	async_serialize_end();
160	futex_up(&vfs_phone_futex);	167	futex_up(&vfs_phone_futex);
161	return (ssize_t) IPC_GET_ARG1(answer);	168	return (ssize_t) IPC_GET_ARG1(answer);
162	}	169	}
163		170
164	ssize_t write(int fildes, const void *buf, size_t nbyte)	171	ssize_t write(int fildes, const void *buf, size_t nbyte)
165	{	172	{
166	int res;	173	int res;
167	ipcarg_t rc;	174	ipcarg_t rc;
168	ipc_call_t answer;	175	ipc_call_t answer;
169	aid_t req;	176	aid_t req;
170		177
171	futex_down(&vfs_phone_futex);	178	futex_down(&vfs_phone_futex);
172	async_serialize_start();	179	async_serialize_start();
173	if (vfs_phone < 0) {	180	if (vfs_phone < 0) {
174	res = vfs_connect();	181	res = vfs_connect();
175	if (res < 0) {	182	if (res < 0) {
176	async_serialize_end();	183	async_serialize_end();
177	futex_up(&vfs_phone_futex);	184	futex_up(&vfs_phone_futex);
178	return res;	185	return res;
179	}	186	}
180	}	187	}
181	req = async_send_1(vfs_phone, VFS_WRITE, fildes, &answer);	188	req = async_send_1(vfs_phone, VFS_WRITE, fildes, &answer);
182	if (ipc_data_write_start(vfs_phone, (void *)buf, nbyte) != EOK) {	189	if (ipc_data_write_start(vfs_phone, (void *)buf, nbyte) != EOK) {
183	async_wait_for(req, NULL);	190	async_wait_for(req, NULL);
184	async_serialize_end();	191	async_serialize_end();
185	futex_up(&vfs_phone_futex);	192	futex_up(&vfs_phone_futex);
186	return (ssize_t) rc;	193	return (ssize_t) rc;
187	}	194	}
188	async_wait_for(req, &rc);	195	async_wait_for(req, &rc);
189	async_serialize_end();	196	async_serialize_end();
190	futex_up(&vfs_phone_futex);	197	futex_up(&vfs_phone_futex);
191	return (ssize_t) IPC_GET_ARG1(answer);	198	return (ssize_t) IPC_GET_ARG1(answer);
192	}	199	}
193		200
194	off_t lseek(int fildes, off_t offset, int whence)	201	off_t lseek(int fildes, off_t offset, int whence)
195	{	202	{
196	int res;	203	int res;
197	ipcarg_t rc;	204	ipcarg_t rc;
198		205
199	futex_down(&vfs_phone_futex);	206	futex_down(&vfs_phone_futex);
200	async_serialize_start();	207	async_serialize_start();
201	if (vfs_phone < 0) {	208	if (vfs_phone < 0) {
202	res = vfs_connect();	209	res = vfs_connect();
203	if (res < 0) {	210	if (res < 0) {
204	async_serialize_end();	211	async_serialize_end();
205	futex_up(&vfs_phone_futex);	212	futex_up(&vfs_phone_futex);
206	return res;	213	return res;
207	}	214	}
208	}	215	}
209		216
210	off_t newoffs;	217	off_t newoffs;
211	rc = async_req_3_1(vfs_phone, VFS_SEEK, fildes, offset, whence,	218	rc = async_req_3_1(vfs_phone, VFS_SEEK, fildes, offset, whence,
212	&newoffs);	219	(ipcarg_t)&newoffs);
213		220
214	async_serialize_end();	221	async_serialize_end();
215	futex_up(&vfs_phone_futex);	222	futex_up(&vfs_phone_futex);
216		223
217	if (rc != EOK)	224	if (rc != EOK)
218	return (off_t) -1;	225	return (off_t) -1;
219		226
220	return newoffs;	227	return newoffs;
221	}	228	}
222		229
223	int ftruncate(int fildes, off_t length)	230	int ftruncate(int fildes, off_t length)
224	{	231	{
225	int res;	232	int res;
226	ipcarg_t rc;	233	ipcarg_t rc;
227		234
228	futex_down(&vfs_phone_futex);	235	futex_down(&vfs_phone_futex);
229	async_serialize_start();	236	async_serialize_start();
230	if (vfs_phone < 0) {	237	if (vfs_phone < 0) {
231	res = vfs_connect();	238	res = vfs_connect();
232	if (res < 0) {	239	if (res < 0) {
233	async_serialize_end();	240	async_serialize_end();
234	futex_up(&vfs_phone_futex);	241	futex_up(&vfs_phone_futex);
235	return res;	242	return res;
236	}	243	}
237	}	244	}
238	rc = async_req_2_0(vfs_phone, VFS_TRUNCATE, fildes, length);	245	rc = async_req_2_0(vfs_phone, VFS_TRUNCATE, fildes, length);
239	async_serialize_end();	246	async_serialize_end();
240	futex_up(&vfs_phone_futex);	247	futex_up(&vfs_phone_futex);
241	return (int) rc;	248	return (int) rc;
242	}	249	}
243		250
244	DIR opendir(const char dirname)	251	DIR opendir(const char dirname)
245	{	252	{
246	DIR *dirp = malloc(sizeof(DIR));	253	DIR *dirp = malloc(sizeof(DIR));
247	if (!dirp)	254	if (!dirp)
248	return NULL;	255	return NULL;
249	dirp->fd = _open(dirname, L_DIRECTORY, 0);	256	dirp->fd = _open(dirname, L_DIRECTORY, 0);
250	if (dirp->fd < 0) {	257	if (dirp->fd < 0) {
251	free(dirp);	258	free(dirp);
252	return NULL;	259	return NULL;
253	}	260	}
254	return dirp;	261	return dirp;
255	}	262	}
256		263
257	struct dirent readdir(DIR dirp)	264	struct dirent readdir(DIR dirp)
258	{	265	{
259	ssize_t len = read(dirp->fd, &dirp->res.d_name[0], NAME_MAX + 1);	266	ssize_t len = read(dirp->fd, &dirp->res.d_name[0], NAME_MAX + 1);
260	if (len <= 0)	267	if (len <= 0)
261	return NULL;	268	return NULL;
262	return &dirp->res;	269	return &dirp->res;
263	}	270	}
264		271
265	void rewinddir(DIR *dirp)	272	void rewinddir(DIR *dirp)
266	{	273	{
267	(void) lseek(dirp->fd, 0, SEEK_SET);	274	(void) lseek(dirp->fd, 0, SEEK_SET);
268	}	275	}
269		276
270	int closedir(DIR *dirp)	277	int closedir(DIR *dirp)
271	{	278	{
272	(void) close(dirp->fd);	279	(void) close(dirp->fd);
273	free(dirp);	280	free(dirp);
274	return 0;	281	return 0;
275	}	282	}
276		283
277	int close(int fildes)	284	int mkdir(const char *path, mode_t mode)
278	{	285	{
-		286	int res;
-		287	ipcarg_t rc;
-		288	ipc_call_t answer;
-		289	aid_t req;
-		290
-		291	futex_down(&vfs_phone_futex);
-		292	async_serialize_start();
-		293	if (vfs_phone < 0) {
-		294	res = vfs_connect();
-		295	if (res < 0) {
-		296	async_serialize_end();
-		297	futex_up(&vfs_phone_futex);
-		298	return res;
-		299	}
-		300	}
-		301	req = async_send_1(vfs_phone, VFS_MKDIR, mode, &answer);
-		302	rc = ipc_data_write_start(vfs_phone, path, strlen(path));
-		303	if (rc != EOK) {
-		304	async_wait_for(req, NULL);
-		305	async_serialize_end();
-		306	futex_up(&vfs_phone_futex);
-		307	return (int) rc;
-		308	}
-		309	async_wait_for(req, &rc);
-		310	async_serialize_end();
-		311	futex_up(&vfs_phone_futex);
279	return 0; /* TODO */	312	return EOK;
280	}	313	}
281		314
282	/** @}	315	/** @}
283	*/	316	*/
284		317

Subversion Repositories HelenOS

(root)/branches/dd/uspace/lib/libc/generic/vfs/vfs.c @ 4688 – Rev 2700 → 2707