WebSVN – HelenOS – Diff – /trunk/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)
{
    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);
    rc = ipc_data_read_start(vfs_phone, (void *)buf, nbyte);
    if (rc != 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);
    rc = ipc_data_write_start(vfs_phone, (void *)buf, nbyte);
    if (rc != 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;
    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, NULL);
    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;
}
 
static int _unlink(const char *path, int lflag)
{
    int res;
    ipcarg_t rc;
    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_0(vfs_phone, VFS_UNLINK, NULL);
    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;
}
 
int unlink(const char *path)
{
    return _unlink(path, L_NONE);
}
 
int rmdir(const char *path)
{
    return _unlink(path, L_DIRECTORY);
}
 
/** @}
 */
 

Rev 2741	Rev 2753
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;	138	int res;
139	ipcarg_t rc;	139	ipcarg_t rc;
140		140
141	futex_down(&vfs_phone_futex);	141	futex_down(&vfs_phone_futex);
142	async_serialize_start();	142	async_serialize_start();
143	if (vfs_phone < 0) {	143	if (vfs_phone < 0) {
144	res = vfs_connect();	144	res = vfs_connect();
145	if (res < 0) {	145	if (res < 0) {
146	async_serialize_end();	146	async_serialize_end();
147	futex_up(&vfs_phone_futex);	147	futex_up(&vfs_phone_futex);
148	return res;	148	return res;
149	}	149	}
150	}	150	}
151		151
152	rc = async_req_1_0(vfs_phone, VFS_CLOSE, fildes);	152	rc = async_req_1_0(vfs_phone, VFS_CLOSE, fildes);
153		153
154	async_serialize_end();	154	async_serialize_end();
155	futex_up(&vfs_phone_futex);	155	futex_up(&vfs_phone_futex);
156		156
157	return (int)rc;	157	return (int)rc;
158	}	158	}
159		159
160	ssize_t read(int fildes, void *buf, size_t nbyte)	160	ssize_t read(int fildes, void *buf, size_t nbyte)
161	{	161	{
162	int res;	162	int res;
163	ipcarg_t rc;	163	ipcarg_t rc;
164	ipc_call_t answer;	164	ipc_call_t answer;
165	aid_t req;	165	aid_t req;
166		166
167	futex_down(&vfs_phone_futex);	167	futex_down(&vfs_phone_futex);
168	async_serialize_start();	168	async_serialize_start();
169	if (vfs_phone < 0) {	169	if (vfs_phone < 0) {
170	res = vfs_connect();	170	res = vfs_connect();
171	if (res < 0) {	171	if (res < 0) {
172	async_serialize_end();	172	async_serialize_end();
173	futex_up(&vfs_phone_futex);	173	futex_up(&vfs_phone_futex);
174	return res;	174	return res;
175	}	175	}
176	}	176	}
177	req = async_send_1(vfs_phone, VFS_READ, fildes, &answer);	177	req = async_send_1(vfs_phone, VFS_READ, fildes, &answer);
178	rc = ipc_data_read_start(vfs_phone, (void *)buf, nbyte);	178	rc = ipc_data_read_start(vfs_phone, (void *)buf, nbyte);
179	if (rc != EOK) {	179	if (rc != EOK) {
180	async_wait_for(req, NULL);	180	async_wait_for(req, NULL);
181	async_serialize_end();	181	async_serialize_end();
182	futex_up(&vfs_phone_futex);	182	futex_up(&vfs_phone_futex);
183	return (ssize_t) rc;	183	return (ssize_t) rc;
184	}	184	}
185	async_wait_for(req, &rc);	185	async_wait_for(req, &rc);
186	async_serialize_end();	186	async_serialize_end();
187	futex_up(&vfs_phone_futex);	187	futex_up(&vfs_phone_futex);
188	if (rc == EOK)	188	if (rc == EOK)
189	return (ssize_t) IPC_GET_ARG1(answer);	189	return (ssize_t) IPC_GET_ARG1(answer);
190	else	190	else
191	return -1;	191	return -1;
192	}	192	}
193		193
194	ssize_t write(int fildes, const void *buf, size_t nbyte)	194	ssize_t write(int fildes, const void *buf, size_t nbyte)
195	{	195	{
196	int res;	196	int res;
197	ipcarg_t rc;	197	ipcarg_t rc;
198	ipc_call_t answer;	198	ipc_call_t answer;
199	aid_t req;	199	aid_t req;
200		200
201	futex_down(&vfs_phone_futex);	201	futex_down(&vfs_phone_futex);
202	async_serialize_start();	202	async_serialize_start();
203	if (vfs_phone < 0) {	203	if (vfs_phone < 0) {
204	res = vfs_connect();	204	res = vfs_connect();
205	if (res < 0) {	205	if (res < 0) {
206	async_serialize_end();	206	async_serialize_end();
207	futex_up(&vfs_phone_futex);	207	futex_up(&vfs_phone_futex);
208	return res;	208	return res;
209	}	209	}
210	}	210	}
211	req = async_send_1(vfs_phone, VFS_WRITE, fildes, &answer);	211	req = async_send_1(vfs_phone, VFS_WRITE, fildes, &answer);
212	rc = ipc_data_write_start(vfs_phone, (void *)buf, nbyte);	212	rc = ipc_data_write_start(vfs_phone, (void *)buf, nbyte);
213	if (rc != EOK) {	213	if (rc != EOK) {
214	async_wait_for(req, NULL);	214	async_wait_for(req, NULL);
215	async_serialize_end();	215	async_serialize_end();
216	futex_up(&vfs_phone_futex);	216	futex_up(&vfs_phone_futex);
217	return (ssize_t) rc;	217	return (ssize_t) rc;
218	}	218	}
219	async_wait_for(req, &rc);	219	async_wait_for(req, &rc);
220	async_serialize_end();	220	async_serialize_end();
221	futex_up(&vfs_phone_futex);	221	futex_up(&vfs_phone_futex);
222	if (rc == EOK)	222	if (rc == EOK)
223	return (ssize_t) IPC_GET_ARG1(answer);	223	return (ssize_t) IPC_GET_ARG1(answer);
224	else	224	else
225	return -1;	225	return -1;
226	}	226	}
227		227
228	off_t lseek(int fildes, off_t offset, int whence)	228	off_t lseek(int fildes, off_t offset, int whence)
229	{	229	{
230	int res;	230	int res;
231	ipcarg_t rc;	231	ipcarg_t rc;
232		232
233	futex_down(&vfs_phone_futex);	233	futex_down(&vfs_phone_futex);
234	async_serialize_start();	234	async_serialize_start();
235	if (vfs_phone < 0) {	235	if (vfs_phone < 0) {
236	res = vfs_connect();	236	res = vfs_connect();
237	if (res < 0) {	237	if (res < 0) {
238	async_serialize_end();	238	async_serialize_end();
239	futex_up(&vfs_phone_futex);	239	futex_up(&vfs_phone_futex);
240	return res;	240	return res;
241	}	241	}
242	}	242	}
243		243
244	off_t newoffs;	244	off_t newoffs;
245	rc = async_req_3_1(vfs_phone, VFS_SEEK, fildes, offset, whence,	245	rc = async_req_3_1(vfs_phone, VFS_SEEK, fildes, offset, whence,
246	(ipcarg_t)&newoffs);	246	(ipcarg_t)&newoffs);
247		247
248	async_serialize_end();	248	async_serialize_end();
249	futex_up(&vfs_phone_futex);	249	futex_up(&vfs_phone_futex);
250		250
251	if (rc != EOK)	251	if (rc != EOK)
252	return (off_t) -1;	252	return (off_t) -1;
253		253
254	return newoffs;	254	return newoffs;
255	}	255	}
256		256
257	int ftruncate(int fildes, off_t length)	257	int ftruncate(int fildes, off_t length)
258	{	258	{
259	int res;	259	int res;
260	ipcarg_t rc;	260	ipcarg_t rc;
261		261
262	futex_down(&vfs_phone_futex);	262	futex_down(&vfs_phone_futex);
263	async_serialize_start();	263	async_serialize_start();
264	if (vfs_phone < 0) {	264	if (vfs_phone < 0) {
265	res = vfs_connect();	265	res = vfs_connect();
266	if (res < 0) {	266	if (res < 0) {
267	async_serialize_end();	267	async_serialize_end();
268	futex_up(&vfs_phone_futex);	268	futex_up(&vfs_phone_futex);
269	return res;	269	return res;
270	}	270	}
271	}	271	}
272	rc = async_req_2_0(vfs_phone, VFS_TRUNCATE, fildes, length);	272	rc = async_req_2_0(vfs_phone, VFS_TRUNCATE, fildes, length);
273	async_serialize_end();	273	async_serialize_end();
274	futex_up(&vfs_phone_futex);	274	futex_up(&vfs_phone_futex);
275	return (int) rc;	275	return (int) rc;
276	}	276	}
277		277
278	DIR opendir(const char dirname)	278	DIR opendir(const char dirname)
279	{	279	{
280	DIR *dirp = malloc(sizeof(DIR));	280	DIR *dirp = malloc(sizeof(DIR));
281	if (!dirp)	281	if (!dirp)
282	return NULL;	282	return NULL;
283	dirp->fd = _open(dirname, L_DIRECTORY, 0);	283	dirp->fd = _open(dirname, L_DIRECTORY, 0);
284	if (dirp->fd < 0) {	284	if (dirp->fd < 0) {
285	free(dirp);	285	free(dirp);
286	return NULL;	286	return NULL;
287	}	287	}
288	return dirp;	288	return dirp;
289	}	289	}
290		290
291	struct dirent readdir(DIR dirp)	291	struct dirent readdir(DIR dirp)
292	{	292	{
293	ssize_t len = read(dirp->fd, &dirp->res.d_name[0], NAME_MAX + 1);	293	ssize_t len = read(dirp->fd, &dirp->res.d_name[0], NAME_MAX + 1);
294	if (len <= 0)	294	if (len <= 0)
295	return NULL;	295	return NULL;
296	return &dirp->res;	296	return &dirp->res;
297	}	297	}
298		298
299	void rewinddir(DIR *dirp)	299	void rewinddir(DIR *dirp)
300	{	300	{
301	(void) lseek(dirp->fd, 0, SEEK_SET);	301	(void) lseek(dirp->fd, 0, SEEK_SET);
302	}	302	}
303		303
304	int closedir(DIR *dirp)	304	int closedir(DIR *dirp)
305	{	305	{
306	(void) close(dirp->fd);	306	(void) close(dirp->fd);
307	free(dirp);	307	free(dirp);
308	return 0;	308	return 0;
309	}	309	}
310		310
311	int mkdir(const char *path, mode_t mode)	311	int mkdir(const char *path, mode_t mode)
312	{	312	{
313	int res;	313	int res;
314	ipcarg_t rc;	314	ipcarg_t rc;
315	aid_t req;	315	aid_t req;
316		316
317	futex_down(&vfs_phone_futex);	317	futex_down(&vfs_phone_futex);
318	async_serialize_start();	318	async_serialize_start();
319	if (vfs_phone < 0) {	319	if (vfs_phone < 0) {
320	res = vfs_connect();	320	res = vfs_connect();
321	if (res < 0) {	321	if (res < 0) {
322	async_serialize_end();	322	async_serialize_end();
323	futex_up(&vfs_phone_futex);	323	futex_up(&vfs_phone_futex);
324	return res;	324	return res;
325	}	325	}
326	}	326	}
327	req = async_send_1(vfs_phone, VFS_MKDIR, mode, NULL);	327	req = async_send_1(vfs_phone, VFS_MKDIR, mode, NULL);
328	rc = ipc_data_write_start(vfs_phone, path, strlen(path));	328	rc = ipc_data_write_start(vfs_phone, path, strlen(path));
329	if (rc != EOK) {	329	if (rc != EOK) {
330	async_wait_for(req, NULL);	330	async_wait_for(req, NULL);
331	async_serialize_end();	331	async_serialize_end();
332	futex_up(&vfs_phone_futex);	332	futex_up(&vfs_phone_futex);
333	return (int) rc;	333	return (int) rc;
334	}	334	}
335	async_wait_for(req, &rc);	335	async_wait_for(req, &rc);
336	async_serialize_end();	336	async_serialize_end();
337	futex_up(&vfs_phone_futex);	337	futex_up(&vfs_phone_futex);
338	return EOK;	338	return EOK;
339	}	339	}
340		340
341	static int _unlink(const char *path, int lflag)	341	static int _unlink(const char *path, int lflag)
342	{	342	{
343	int res;	343	int res;
344	ipcarg_t rc;	344	ipcarg_t rc;
345	aid_t req;	345	aid_t req;
346		346
347	futex_down(&vfs_phone_futex);	347	futex_down(&vfs_phone_futex);
348	async_serialize_start();	348	async_serialize_start();
349	if (vfs_phone < 0) {	349	if (vfs_phone < 0) {
350	res = vfs_connect();	350	res = vfs_connect();
351	if (res < 0) {	351	if (res < 0) {
352	async_serialize_end();	352	async_serialize_end();
353	futex_up(&vfs_phone_futex);	353	futex_up(&vfs_phone_futex);
354	return res;	354	return res;
355	}	355	}
356	}	356	}
357	req = async_send_0(vfs_phone, VFS_UNLINK, NULL);	357	req = async_send_0(vfs_phone, VFS_UNLINK, NULL);
358	rc = ipc_data_write_start(vfs_phone, path, strlen(path));	358	rc = ipc_data_write_start(vfs_phone, path, strlen(path));
359	if (rc != EOK) {	359	if (rc != EOK) {
360	async_wait_for(req, NULL);	360	async_wait_for(req, NULL);
361	async_serialize_end();	361	async_serialize_end();
362	futex_up(&vfs_phone_futex);	362	futex_up(&vfs_phone_futex);
363	return (int) rc;	363	return (int) rc;
364	}	364	}
365	async_wait_for(req, &rc);	365	async_wait_for(req, &rc);
366	async_serialize_end();	366	async_serialize_end();
367	futex_up(&vfs_phone_futex);	367	futex_up(&vfs_phone_futex);
368	return EOK;	368	return EOK;
369	}	369	}
370		370
371	int unlink(const char *path)	371	int unlink(const char *path)
372	{	372	{
373	return _unlink(path, L_NONE);	373	return _unlink(path, L_NONE);
374	}	374	}
375		375
376	int rmdir(const char *path)	376	int rmdir(const char *path)
377	{	377	{
378	return _unlink(path, L_DIRECTORY);	378	return _unlink(path, L_DIRECTORY);
379	}	379	}
380		380
381	/** @}	381	/** @}
382	*/	382	*/
383		383

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(root)/trunk/uspace/lib/libc/generic/vfs/vfs.c – Rev 2741 → 2753