WebSVN – HelenOS – Diff – /trunk/uspace/lib/libc/generic/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)
{
    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_1_0(vfs_phone, VFS_CLOSE, fildes);
 
    async_serialize_end();
    futex_up(&vfs_phone_futex);
   
    return (int)rc;
}
 
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 2710	Rev 2734
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	int res;
-		139	ipcarg_t rc;
-		140
-		141	futex_down(&vfs_phone_futex);
-		142	async_serialize_start();
-		143	if (vfs_phone < 0) {
-		144	res = vfs_connect();
-		145	if (res < 0) {
-		146	async_serialize_end();
-		147	futex_up(&vfs_phone_futex);
-		148	return res;
-		149	}
-		150	}
-		151
-		152	rc = async_req_1_0(vfs_phone, VFS_CLOSE, fildes);
-		153
-		154	async_serialize_end();
-		155	futex_up(&vfs_phone_futex);
-		156
138	return 0; /* TODO */	157	return (int)rc;
139	}	158	}
140		159
141	ssize_t read(int fildes, void *buf, size_t nbyte)	160	ssize_t read(int fildes, void *buf, size_t nbyte)
142	{	161	{
143	int res;	162	int res;
144	ipcarg_t rc;	163	ipcarg_t rc;
145	ipc_call_t answer;	164	ipc_call_t answer;
146	aid_t req;	165	aid_t req;
147		166
148	futex_down(&vfs_phone_futex);	167	futex_down(&vfs_phone_futex);
149	async_serialize_start();	168	async_serialize_start();
150	if (vfs_phone < 0) {	169	if (vfs_phone < 0) {
151	res = vfs_connect();	170	res = vfs_connect();
152	if (res < 0) {	171	if (res < 0) {
153	async_serialize_end();	172	async_serialize_end();
154	futex_up(&vfs_phone_futex);	173	futex_up(&vfs_phone_futex);
155	return res;	174	return res;
156	}	175	}
157	}	176	}
158	req = async_send_1(vfs_phone, VFS_READ, fildes, &answer);	177	req = async_send_1(vfs_phone, VFS_READ, fildes, &answer);
159	if (ipc_data_read_start(vfs_phone, (void *)buf, nbyte) != EOK) {	178	if (ipc_data_read_start(vfs_phone, (void *)buf, nbyte) != EOK) {
160	async_wait_for(req, NULL);	179	async_wait_for(req, NULL);
161	async_serialize_end();	180	async_serialize_end();
162	futex_up(&vfs_phone_futex);	181	futex_up(&vfs_phone_futex);
163	return (ssize_t) rc;	182	return (ssize_t) rc;
164	}	183	}
165	async_wait_for(req, &rc);	184	async_wait_for(req, &rc);
166	async_serialize_end();	185	async_serialize_end();
167	futex_up(&vfs_phone_futex);	186	futex_up(&vfs_phone_futex);
168	if (rc == EOK)	187	if (rc == EOK)
169	return (ssize_t) IPC_GET_ARG1(answer);	188	return (ssize_t) IPC_GET_ARG1(answer);
170	else	189	else
171	return -1;	190	return -1;
172	}	191	}
173		192
174	ssize_t write(int fildes, const void *buf, size_t nbyte)	193	ssize_t write(int fildes, const void *buf, size_t nbyte)
175	{	194	{
176	int res;	195	int res;
177	ipcarg_t rc;	196	ipcarg_t rc;
178	ipc_call_t answer;	197	ipc_call_t answer;
179	aid_t req;	198	aid_t req;
180		199
181	futex_down(&vfs_phone_futex);	200	futex_down(&vfs_phone_futex);
182	async_serialize_start();	201	async_serialize_start();
183	if (vfs_phone < 0) {	202	if (vfs_phone < 0) {
184	res = vfs_connect();	203	res = vfs_connect();
185	if (res < 0) {	204	if (res < 0) {
186	async_serialize_end();	205	async_serialize_end();
187	futex_up(&vfs_phone_futex);	206	futex_up(&vfs_phone_futex);
188	return res;	207	return res;
189	}	208	}
190	}	209	}
191	req = async_send_1(vfs_phone, VFS_WRITE, fildes, &answer);	210	req = async_send_1(vfs_phone, VFS_WRITE, fildes, &answer);
192	if (ipc_data_write_start(vfs_phone, (void *)buf, nbyte) != EOK) {	211	if (ipc_data_write_start(vfs_phone, (void *)buf, nbyte) != EOK) {
193	async_wait_for(req, NULL);	212	async_wait_for(req, NULL);
194	async_serialize_end();	213	async_serialize_end();
195	futex_up(&vfs_phone_futex);	214	futex_up(&vfs_phone_futex);
196	return (ssize_t) rc;	215	return (ssize_t) rc;
197	}	216	}
198	async_wait_for(req, &rc);	217	async_wait_for(req, &rc);
199	async_serialize_end();	218	async_serialize_end();
200	futex_up(&vfs_phone_futex);	219	futex_up(&vfs_phone_futex);
201	if (rc == EOK)	220	if (rc == EOK)
202	return (ssize_t) IPC_GET_ARG1(answer);	221	return (ssize_t) IPC_GET_ARG1(answer);
203	else	222	else
204	return -1;	223	return -1;
205	}	224	}
206		225
207	off_t lseek(int fildes, off_t offset, int whence)	226	off_t lseek(int fildes, off_t offset, int whence)
208	{	227	{
209	int res;	228	int res;
210	ipcarg_t rc;	229	ipcarg_t rc;
211		230
212	futex_down(&vfs_phone_futex);	231	futex_down(&vfs_phone_futex);
213	async_serialize_start();	232	async_serialize_start();
214	if (vfs_phone < 0) {	233	if (vfs_phone < 0) {
215	res = vfs_connect();	234	res = vfs_connect();
216	if (res < 0) {	235	if (res < 0) {
217	async_serialize_end();	236	async_serialize_end();
218	futex_up(&vfs_phone_futex);	237	futex_up(&vfs_phone_futex);
219	return res;	238	return res;
220	}	239	}
221	}	240	}
222		241
223	off_t newoffs;	242	off_t newoffs;
224	rc = async_req_3_1(vfs_phone, VFS_SEEK, fildes, offset, whence,	243	rc = async_req_3_1(vfs_phone, VFS_SEEK, fildes, offset, whence,
225	(ipcarg_t)&newoffs);	244	(ipcarg_t)&newoffs);
226		245
227	async_serialize_end();	246	async_serialize_end();
228	futex_up(&vfs_phone_futex);	247	futex_up(&vfs_phone_futex);
229		248
230	if (rc != EOK)	249	if (rc != EOK)
231	return (off_t) -1;	250	return (off_t) -1;
232		251
233	return newoffs;	252	return newoffs;
234	}	253	}
235		254
236	int ftruncate(int fildes, off_t length)	255	int ftruncate(int fildes, off_t length)
237	{	256	{
238	int res;	257	int res;
239	ipcarg_t rc;	258	ipcarg_t rc;
240		259
241	futex_down(&vfs_phone_futex);	260	futex_down(&vfs_phone_futex);
242	async_serialize_start();	261	async_serialize_start();
243	if (vfs_phone < 0) {	262	if (vfs_phone < 0) {
244	res = vfs_connect();	263	res = vfs_connect();
245	if (res < 0) {	264	if (res < 0) {
246	async_serialize_end();	265	async_serialize_end();
247	futex_up(&vfs_phone_futex);	266	futex_up(&vfs_phone_futex);
248	return res;	267	return res;
249	}	268	}
250	}	269	}
251	rc = async_req_2_0(vfs_phone, VFS_TRUNCATE, fildes, length);	270	rc = async_req_2_0(vfs_phone, VFS_TRUNCATE, fildes, length);
252	async_serialize_end();	271	async_serialize_end();
253	futex_up(&vfs_phone_futex);	272	futex_up(&vfs_phone_futex);
254	return (int) rc;	273	return (int) rc;
255	}	274	}
256		275
257	DIR opendir(const char dirname)	276	DIR opendir(const char dirname)
258	{	277	{
259	DIR *dirp = malloc(sizeof(DIR));	278	DIR *dirp = malloc(sizeof(DIR));
260	if (!dirp)	279	if (!dirp)
261	return NULL;	280	return NULL;
262	dirp->fd = _open(dirname, L_DIRECTORY, 0);	281	dirp->fd = _open(dirname, L_DIRECTORY, 0);
263	if (dirp->fd < 0) {	282	if (dirp->fd < 0) {
264	free(dirp);	283	free(dirp);
265	return NULL;	284	return NULL;
266	}	285	}
267	return dirp;	286	return dirp;
268	}	287	}
269		288
270	struct dirent readdir(DIR dirp)	289	struct dirent readdir(DIR dirp)
271	{	290	{
272	ssize_t len = read(dirp->fd, &dirp->res.d_name[0], NAME_MAX + 1);	291	ssize_t len = read(dirp->fd, &dirp->res.d_name[0], NAME_MAX + 1);
273	if (len <= 0)	292	if (len <= 0)
274	return NULL;	293	return NULL;
275	return &dirp->res;	294	return &dirp->res;
276	}	295	}
277		296
278	void rewinddir(DIR *dirp)	297	void rewinddir(DIR *dirp)
279	{	298	{
280	(void) lseek(dirp->fd, 0, SEEK_SET);	299	(void) lseek(dirp->fd, 0, SEEK_SET);
281	}	300	}
282		301
283	int closedir(DIR *dirp)	302	int closedir(DIR *dirp)
284	{	303	{
285	(void) close(dirp->fd);	304	(void) close(dirp->fd);
286	free(dirp);	305	free(dirp);
287	return 0;	306	return 0;
288	}	307	}
289		308
290	int mkdir(const char *path, mode_t mode)	309	int mkdir(const char *path, mode_t mode)
291	{	310	{
292	int res;	311	int res;
293	ipcarg_t rc;	312	ipcarg_t rc;
294	ipc_call_t answer;	313	ipc_call_t answer;
295	aid_t req;	314	aid_t req;
296		315
297	futex_down(&vfs_phone_futex);	316	futex_down(&vfs_phone_futex);
298	async_serialize_start();	317	async_serialize_start();
299	if (vfs_phone < 0) {	318	if (vfs_phone < 0) {
300	res = vfs_connect();	319	res = vfs_connect();
301	if (res < 0) {	320	if (res < 0) {
302	async_serialize_end();	321	async_serialize_end();
303	futex_up(&vfs_phone_futex);	322	futex_up(&vfs_phone_futex);
304	return res;	323	return res;
305	}	324	}
306	}	325	}
307	req = async_send_1(vfs_phone, VFS_MKDIR, mode, &answer);	326	req = async_send_1(vfs_phone, VFS_MKDIR, mode, &answer);
308	rc = ipc_data_write_start(vfs_phone, path, strlen(path));	327	rc = ipc_data_write_start(vfs_phone, path, strlen(path));
309	if (rc != EOK) {	328	if (rc != EOK) {
310	async_wait_for(req, NULL);	329	async_wait_for(req, NULL);
311	async_serialize_end();	330	async_serialize_end();
312	futex_up(&vfs_phone_futex);	331	futex_up(&vfs_phone_futex);
313	return (int) rc;	332	return (int) rc;
314	}	333	}
315	async_wait_for(req, &rc);	334	async_wait_for(req, &rc);
316	async_serialize_end();	335	async_serialize_end();
317	futex_up(&vfs_phone_futex);	336	futex_up(&vfs_phone_futex);
318	return EOK;	337	return EOK;
319	}	338	}
320		339
321	/** @}	340	/** @}
322	*/	341	*/
323		342

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(root)/trunk/uspace/lib/libc/generic/vfs.c – Rev 2710 → 2734