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);
    if (rc == EOK)
        return (ssize_t) IPC_GET_ARG1(answer);
    else
        return -1;
}
 
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);
    if (rc == EOK)
        return (ssize_t) IPC_GET_ARG1(answer);
    else
        return -1;
}
 
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 2707	Rev 2710
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>	40	#include <sys/stat.h>
41	#include <sys/types.h>	41	#include <sys/types.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 <atomic.h>	45	#include <atomic.h>
46	#include <futex.h>	46	#include <futex.h>
47	#include <errno.h>	47	#include <errno.h>
48	#include <string.h>	48	#include <string.h>
49	#include "../../srv/vfs/vfs.h"	49	#include "../../srv/vfs/vfs.h"
50		50
51	int vfs_phone = -1;	51	int vfs_phone = -1;
52	atomic_t vfs_phone_futex = FUTEX_INITIALIZER;	52	atomic_t vfs_phone_futex = FUTEX_INITIALIZER;
53		53
54	static int vfs_connect(void)	54	static int vfs_connect(void)
55	{	55	{
56	if (vfs_phone < 0)	56	if (vfs_phone < 0)
57	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);
58	return vfs_phone;	58	return vfs_phone;
59	}	59	}
60		60
61	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)
62	{	62	{
63	int res;	63	int res;
64	ipcarg_t rc;	64	ipcarg_t rc;
65	aid_t req;	65	aid_t req;
66		66
67	int dev_handle = 0; /* TODO */	67	int dev_handle = 0; /* TODO */
68		68
69	futex_down(&vfs_phone_futex);	69	futex_down(&vfs_phone_futex);
70	async_serialize_start();	70	async_serialize_start();
71	if (vfs_phone < 0) {	71	if (vfs_phone < 0) {
72	res = vfs_connect();	72	res = vfs_connect();
73	if (res < 0) {	73	if (res < 0) {
74	async_serialize_end();	74	async_serialize_end();
75	futex_up(&vfs_phone_futex);	75	futex_up(&vfs_phone_futex);
76	return res;	76	return res;
77	}	77	}
78	}	78	}
79	req = async_send_1(vfs_phone, VFS_MOUNT, dev_handle, NULL);	79	req = async_send_1(vfs_phone, VFS_MOUNT, dev_handle, NULL);
80	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));
81	if (rc != EOK) {	81	if (rc != EOK) {
82	async_wait_for(req, NULL);	82	async_wait_for(req, NULL);
83	async_serialize_end();	83	async_serialize_end();
84	futex_up(&vfs_phone_futex);	84	futex_up(&vfs_phone_futex);
85	return (int) rc;	85	return (int) rc;
86	}	86	}
87	rc = ipc_data_write_start(vfs_phone, (void *)mp, strlen(mp));	87	rc = ipc_data_write_start(vfs_phone, (void *)mp, strlen(mp));
88	if (rc != EOK) {	88	if (rc != EOK) {
89	async_wait_for(req, NULL);	89	async_wait_for(req, NULL);
90	async_serialize_end();	90	async_serialize_end();
91	futex_up(&vfs_phone_futex);	91	futex_up(&vfs_phone_futex);
92	return (int) rc;	92	return (int) rc;
93	}	93	}
94	async_wait_for(req, &rc);	94	async_wait_for(req, &rc);
95	async_serialize_end();	95	async_serialize_end();
96	futex_up(&vfs_phone_futex);	96	futex_up(&vfs_phone_futex);
97	return (int) rc;	97	return (int) rc;
98	}	98	}
99		99
100	static int _open(const char *path, int lflag, int oflag, ...)	100	static int _open(const char *path, int lflag, int oflag, ...)
101	{	101	{
102	int res;	102	int res;
103	ipcarg_t rc;	103	ipcarg_t rc;
104	ipc_call_t answer;	104	ipc_call_t answer;
105	aid_t req;	105	aid_t req;
106		106
107	futex_down(&vfs_phone_futex);	107	futex_down(&vfs_phone_futex);
108	async_serialize_start();	108	async_serialize_start();
109	if (vfs_phone < 0) {	109	if (vfs_phone < 0) {
110	res = vfs_connect();	110	res = vfs_connect();
111	if (res < 0) {	111	if (res < 0) {
112	async_serialize_end();	112	async_serialize_end();
113	futex_up(&vfs_phone_futex);	113	futex_up(&vfs_phone_futex);
114	return res;	114	return res;
115	}	115	}
116	}	116	}
117	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);
118	rc = ipc_data_write_start(vfs_phone, path, strlen(path));	118	rc = ipc_data_write_start(vfs_phone, path, strlen(path));
119	if (rc != EOK) {	119	if (rc != EOK) {
120	async_wait_for(req, NULL);	120	async_wait_for(req, NULL);
121	async_serialize_end();	121	async_serialize_end();
122	futex_up(&vfs_phone_futex);	122	futex_up(&vfs_phone_futex);
123	return (int) rc;	123	return (int) rc;
124	}	124	}
125	async_wait_for(req, &rc);	125	async_wait_for(req, &rc);
126	async_serialize_end();	126	async_serialize_end();
127	futex_up(&vfs_phone_futex);	127	futex_up(&vfs_phone_futex);
128	return (int) IPC_GET_ARG1(answer);	128	return (int) IPC_GET_ARG1(answer);
129	}	129	}
130		130
131	int open(const char *path, int oflag, ...)	131	int open(const char *path, int oflag, ...)
132	{	132	{
133	return _open(path, L_FILE, oflag);	133	return _open(path, L_FILE, oflag);
134	}	134	}
135		135
136	int close(int fildes)	136	int close(int fildes)
137	{	137	{
138	return 0; /* TODO */	138	return 0; /* TODO */
139	}	139	}
140		140
141	ssize_t read(int fildes, void *buf, size_t nbyte)	141	ssize_t read(int fildes, void *buf, size_t nbyte)
142	{	142	{
143	int res;	143	int res;
144	ipcarg_t rc;	144	ipcarg_t rc;
145	ipc_call_t answer;	145	ipc_call_t answer;
146	aid_t req;	146	aid_t req;
147		147
148	futex_down(&vfs_phone_futex);	148	futex_down(&vfs_phone_futex);
149	async_serialize_start();	149	async_serialize_start();
150	if (vfs_phone < 0) {	150	if (vfs_phone < 0) {
151	res = vfs_connect();	151	res = vfs_connect();
152	if (res < 0) {	152	if (res < 0) {
153	async_serialize_end();	153	async_serialize_end();
154	futex_up(&vfs_phone_futex);	154	futex_up(&vfs_phone_futex);
155	return res;	155	return res;
156	}	156	}
157	}	157	}
158	req = async_send_1(vfs_phone, VFS_READ, fildes, &answer);	158	req = async_send_1(vfs_phone, VFS_READ, fildes, &answer);
159	if (ipc_data_read_start(vfs_phone, (void *)buf, nbyte) != EOK) {	159	if (ipc_data_read_start(vfs_phone, (void *)buf, nbyte) != EOK) {
160	async_wait_for(req, NULL);	160	async_wait_for(req, NULL);
161	async_serialize_end();	161	async_serialize_end();
162	futex_up(&vfs_phone_futex);	162	futex_up(&vfs_phone_futex);
163	return (ssize_t) rc;	163	return (ssize_t) rc;
164	}	164	}
165	async_wait_for(req, &rc);	165	async_wait_for(req, &rc);
166	async_serialize_end();	166	async_serialize_end();
167	futex_up(&vfs_phone_futex);	167	futex_up(&vfs_phone_futex);
-		168	if (rc == EOK)
168	return (ssize_t) IPC_GET_ARG1(answer);	169	return (ssize_t) IPC_GET_ARG1(answer);
-		170	else
-		171	return -1;
169	}	172	}
170		173
171	ssize_t write(int fildes, const void *buf, size_t nbyte)	174	ssize_t write(int fildes, const void *buf, size_t nbyte)
172	{	175	{
173	int res;	176	int res;
174	ipcarg_t rc;	177	ipcarg_t rc;
175	ipc_call_t answer;	178	ipc_call_t answer;
176	aid_t req;	179	aid_t req;
177		180
178	futex_down(&vfs_phone_futex);	181	futex_down(&vfs_phone_futex);
179	async_serialize_start();	182	async_serialize_start();
180	if (vfs_phone < 0) {	183	if (vfs_phone < 0) {
181	res = vfs_connect();	184	res = vfs_connect();
182	if (res < 0) {	185	if (res < 0) {
183	async_serialize_end();	186	async_serialize_end();
184	futex_up(&vfs_phone_futex);	187	futex_up(&vfs_phone_futex);
185	return res;	188	return res;
186	}	189	}
187	}	190	}
188	req = async_send_1(vfs_phone, VFS_WRITE, fildes, &answer);	191	req = async_send_1(vfs_phone, VFS_WRITE, fildes, &answer);
189	if (ipc_data_write_start(vfs_phone, (void *)buf, nbyte) != EOK) {	192	if (ipc_data_write_start(vfs_phone, (void *)buf, nbyte) != EOK) {
190	async_wait_for(req, NULL);	193	async_wait_for(req, NULL);
191	async_serialize_end();	194	async_serialize_end();
192	futex_up(&vfs_phone_futex);	195	futex_up(&vfs_phone_futex);
193	return (ssize_t) rc;	196	return (ssize_t) rc;
194	}	197	}
195	async_wait_for(req, &rc);	198	async_wait_for(req, &rc);
196	async_serialize_end();	199	async_serialize_end();
197	futex_up(&vfs_phone_futex);	200	futex_up(&vfs_phone_futex);
-		201	if (rc == EOK)
198	return (ssize_t) IPC_GET_ARG1(answer);	202	return (ssize_t) IPC_GET_ARG1(answer);
-		203	else
-		204	return -1;
199	}	205	}
200		206
201	off_t lseek(int fildes, off_t offset, int whence)	207	off_t lseek(int fildes, off_t offset, int whence)
202	{	208	{
203	int res;	209	int res;
204	ipcarg_t rc;	210	ipcarg_t rc;
205		211
206	futex_down(&vfs_phone_futex);	212	futex_down(&vfs_phone_futex);
207	async_serialize_start();	213	async_serialize_start();
208	if (vfs_phone < 0) {	214	if (vfs_phone < 0) {
209	res = vfs_connect();	215	res = vfs_connect();
210	if (res < 0) {	216	if (res < 0) {
211	async_serialize_end();	217	async_serialize_end();
212	futex_up(&vfs_phone_futex);	218	futex_up(&vfs_phone_futex);
213	return res;	219	return res;
214	}	220	}
215	}	221	}
216		222
217	off_t newoffs;	223	off_t newoffs;
218	rc = async_req_3_1(vfs_phone, VFS_SEEK, fildes, offset, whence,	224	rc = async_req_3_1(vfs_phone, VFS_SEEK, fildes, offset, whence,
219	(ipcarg_t)&newoffs);	225	(ipcarg_t)&newoffs);
220		226
221	async_serialize_end();	227	async_serialize_end();
222	futex_up(&vfs_phone_futex);	228	futex_up(&vfs_phone_futex);
223		229
224	if (rc != EOK)	230	if (rc != EOK)
225	return (off_t) -1;	231	return (off_t) -1;
226		232
227	return newoffs;	233	return newoffs;
228	}	234	}
229		235
230	int ftruncate(int fildes, off_t length)	236	int ftruncate(int fildes, off_t length)
231	{	237	{
232	int res;	238	int res;
233	ipcarg_t rc;	239	ipcarg_t rc;
234		240
235	futex_down(&vfs_phone_futex);	241	futex_down(&vfs_phone_futex);
236	async_serialize_start();	242	async_serialize_start();
237	if (vfs_phone < 0) {	243	if (vfs_phone < 0) {
238	res = vfs_connect();	244	res = vfs_connect();
239	if (res < 0) {	245	if (res < 0) {
240	async_serialize_end();	246	async_serialize_end();
241	futex_up(&vfs_phone_futex);	247	futex_up(&vfs_phone_futex);
242	return res;	248	return res;
243	}	249	}
244	}	250	}
245	rc = async_req_2_0(vfs_phone, VFS_TRUNCATE, fildes, length);	251	rc = async_req_2_0(vfs_phone, VFS_TRUNCATE, fildes, length);
246	async_serialize_end();	252	async_serialize_end();
247	futex_up(&vfs_phone_futex);	253	futex_up(&vfs_phone_futex);
248	return (int) rc;	254	return (int) rc;
249	}	255	}
250		256
251	DIR opendir(const char dirname)	257	DIR opendir(const char dirname)
252	{	258	{
253	DIR *dirp = malloc(sizeof(DIR));	259	DIR *dirp = malloc(sizeof(DIR));
254	if (!dirp)	260	if (!dirp)
255	return NULL;	261	return NULL;
256	dirp->fd = _open(dirname, L_DIRECTORY, 0);	262	dirp->fd = _open(dirname, L_DIRECTORY, 0);
257	if (dirp->fd < 0) {	263	if (dirp->fd < 0) {
258	free(dirp);	264	free(dirp);
259	return NULL;	265	return NULL;
260	}	266	}
261	return dirp;	267	return dirp;
262	}	268	}
263		269
264	struct dirent readdir(DIR dirp)	270	struct dirent readdir(DIR dirp)
265	{	271	{
266	ssize_t len = read(dirp->fd, &dirp->res.d_name[0], NAME_MAX + 1);	272	ssize_t len = read(dirp->fd, &dirp->res.d_name[0], NAME_MAX + 1);
267	if (len <= 0)	273	if (len <= 0)
268	return NULL;	274	return NULL;
269	return &dirp->res;	275	return &dirp->res;
270	}	276	}
271		277
272	void rewinddir(DIR *dirp)	278	void rewinddir(DIR *dirp)
273	{	279	{
274	(void) lseek(dirp->fd, 0, SEEK_SET);	280	(void) lseek(dirp->fd, 0, SEEK_SET);
275	}	281	}
276		282
277	int closedir(DIR *dirp)	283	int closedir(DIR *dirp)
278	{	284	{
279	(void) close(dirp->fd);	285	(void) close(dirp->fd);
280	free(dirp);	286	free(dirp);
281	return 0;	287	return 0;
282	}	288	}
283		289
284	int mkdir(const char *path, mode_t mode)	290	int mkdir(const char *path, mode_t mode)
285	{	291	{
286	int res;	292	int res;
287	ipcarg_t rc;	293	ipcarg_t rc;
288	ipc_call_t answer;	294	ipc_call_t answer;
289	aid_t req;	295	aid_t req;
290		296
291	futex_down(&vfs_phone_futex);	297	futex_down(&vfs_phone_futex);
292	async_serialize_start();	298	async_serialize_start();
293	if (vfs_phone < 0) {	299	if (vfs_phone < 0) {
294	res = vfs_connect();	300	res = vfs_connect();
295	if (res < 0) {	301	if (res < 0) {
296	async_serialize_end();	302	async_serialize_end();
297	futex_up(&vfs_phone_futex);	303	futex_up(&vfs_phone_futex);
298	return res;	304	return res;
299	}	305	}
300	}	306	}
301	req = async_send_1(vfs_phone, VFS_MKDIR, mode, &answer);	307	req = async_send_1(vfs_phone, VFS_MKDIR, mode, &answer);
302	rc = ipc_data_write_start(vfs_phone, path, strlen(path));	308	rc = ipc_data_write_start(vfs_phone, path, strlen(path));
303	if (rc != EOK) {	309	if (rc != EOK) {
304	async_wait_for(req, NULL);	310	async_wait_for(req, NULL);
305	async_serialize_end();	311	async_serialize_end();
306	futex_up(&vfs_phone_futex);	312	futex_up(&vfs_phone_futex);
307	return (int) rc;	313	return (int) rc;
308	}	314	}
309	async_wait_for(req, &rc);	315	async_wait_for(req, &rc);
310	async_serialize_end();	316	async_serialize_end();
311	futex_up(&vfs_phone_futex);	317	futex_up(&vfs_phone_futex);
312	return EOK;	318	return EOK;
313	}	319	}
314		320
315	/** @}	321	/** @}
316	*/	322	*/
317		323

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(root)/branches/dd/uspace/lib/libc/generic/vfs/vfs.c @ 4688 – Rev 2707 → 2710