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/vfs.h>
#include <vfs/canonify.h>
#include <stdlib.h>
#include <unistd.h>
#include <dirent.h>
#include <fcntl.h>
#include <sys/stat.h>
#include <stdio.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;
futex_t vfs_phone_futex = FUTEX_INITIALIZER;
 
futex_t cwd_futex = FUTEX_INITIALIZER;
DIR *cwd_dir = NULL;
char *cwd_path = NULL;
size_t cwd_len = 0;
 
static char *absolutize(const char *path, size_t *retlen)
{
    char *ncwd_path;
 
    futex_down(&cwd_futex);
    size_t len = strlen(path);
    if (*path != '/') {
        if (!cwd_path) {
            futex_up(&cwd_futex);
            return NULL;
        }
        ncwd_path = malloc(len + cwd_len + 1);
        if (!ncwd_path) {
            futex_up(&cwd_futex);
            return NULL;
        }
        strcpy(ncwd_path, cwd_path);
        ncwd_path[cwd_len] = '/';
        ncwd_path[cwd_len + 1] = '\0';
    } else {
        ncwd_path = malloc(len + 1);
        if (!ncwd_path) {
            futex_up(&cwd_futex);
            return NULL;
        }
        ncwd_path[0] = '\0';
    }
    strcat(ncwd_path, path);
    if (!canonify(ncwd_path, retlen)) {
        futex_up(&cwd_futex);
        free(ncwd_path);
        return NULL;
    }
    futex_up(&cwd_futex);
    return ncwd_path;
}
 
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;
 
    dev_handle_t dev_handle = 0;    /* TODO */
 
    size_t mpa_len;
    char *mpa = absolutize(mp, &mpa_len);
    if (!mpa)
        return ENOMEM;
 
 
 
 
 
 
 
    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);
            free(mpa);
            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);
        free(mpa);
        return (int) rc;
    }
    rc = ipc_data_write_start(vfs_phone, (void *)mpa, mpa_len);
    if (rc != EOK) {
        async_wait_for(req, NULL);
        async_serialize_end();
        futex_up(&vfs_phone_futex);
        free(mpa);
        return (int) rc;
    }
    async_wait_for(req, &rc);
    async_serialize_end();
    futex_up(&vfs_phone_futex);
    free(mpa);
    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;
   
    size_t pa_len;
    char *pa = absolutize(path, &pa_len);
    if (!pa)
        return ENOMEM;
 
 
 
 
 
 
   
    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);
            free(pa);
            return res;
        }
    }
    req = async_send_3(vfs_phone, VFS_OPEN, lflag, oflag, 0, &answer);
    rc = ipc_data_write_start(vfs_phone, pa, pa_len);
    if (rc != EOK) {
        async_wait_for(req, NULL);
        async_serialize_end();
        futex_up(&vfs_phone_futex);
        free(pa);
        return (int) rc;
    }
    async_wait_for(req, &rc);
    async_serialize_end();
    futex_up(&vfs_phone_futex);
    free(pa);
    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;
   
    size_t pa_len;
    char *pa = absolutize(path, &pa_len);
    if (!pa)
        return ENOMEM;
 
 
 
 
 
 
 
    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);
            free(pa);
            return res;
        }
    }
    req = async_send_1(vfs_phone, VFS_MKDIR, mode, NULL);
    rc = ipc_data_write_start(vfs_phone, pa, pa_len);
    if (rc != EOK) {
        async_wait_for(req, NULL);
        async_serialize_end();
        futex_up(&vfs_phone_futex);
        free(pa);
        return (int) rc;
    }
    async_wait_for(req, &rc);
    async_serialize_end();
    futex_up(&vfs_phone_futex);
    free(pa);
    return rc;
}
 
static int _unlink(const char *path, int lflag)
{
    int res;
    ipcarg_t rc;
    aid_t req;
   
    size_t pa_len;
    char *pa = absolutize(path, &pa_len);
    if (!pa)
        return ENOMEM;
 
 
 
 
 
 
    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);
            free(pa);
            return res;
        }
    }
    req = async_send_0(vfs_phone, VFS_UNLINK, NULL);
    rc = ipc_data_write_start(vfs_phone, pa, pa_len);
    if (rc != EOK) {
        async_wait_for(req, NULL);
        async_serialize_end();
        futex_up(&vfs_phone_futex);
        free(pa);
        return (int) rc;
    }
    async_wait_for(req, &rc);
    async_serialize_end();
    futex_up(&vfs_phone_futex);
    free(pa);
    return rc;
}
 
int unlink(const char *path)
{
    return _unlink(path, L_NONE);
}
 
int rmdir(const char *path)
{
    return _unlink(path, L_DIRECTORY);
}
 
int rename(const char *old, const char *new)
{
    int res;
    ipcarg_t rc;
    aid_t req;
   
    size_t olda_len;
    char *olda = absolutize(old, &olda_len);
    if (!olda)
        return ENOMEM;
 
    size_t newa_len;
 
 
 
 
 
    char *newa = absolutize(new, &newa_len);
    if (!newa) {
        free(olda);
        return ENOMEM;
    }
 
 
 
 
 
 
 
 
    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);
            free(olda);
            free(newa);
            return res;
        }
    }
    req = async_send_0(vfs_phone, VFS_RENAME, NULL);
    rc = ipc_data_write_start(vfs_phone, olda, olda_len);
    if (rc != EOK) {
        async_wait_for(req, NULL);
        async_serialize_end();
        futex_up(&vfs_phone_futex);
        free(olda);
        free(newa);
        return (int) rc;
    }
    rc = ipc_data_write_start(vfs_phone, newa, newa_len);
    if (rc != EOK) {
        async_wait_for(req, NULL);
        async_serialize_end();
        futex_up(&vfs_phone_futex);
        free(olda);
        free(newa);
        return (int) rc;
    }
    async_wait_for(req, &rc);
    async_serialize_end();
    futex_up(&vfs_phone_futex);
    free(olda);
    free(newa);
    return rc;
}
 
int chdir(const char *path)
{
    size_t pa_len;
    char *pa = absolutize(path, &pa_len);
    if (!pa)
        return ENOMEM;
 
 
 
 
 
 
 
    DIR *d = opendir(pa);
    if (!d) {
        free(pa);
        return ENOENT;
    }
 
    futex_down(&cwd_futex);
    if (cwd_dir) {
        closedir(cwd_dir);
        cwd_dir = NULL;
        free(cwd_path);
        cwd_path = NULL;
        cwd_len = 0;
    }
    cwd_dir = d;
    cwd_path = pa;
    cwd_len = pa_len;
    futex_up(&cwd_futex);
}
 
char *getcwd(char *buf, size_t size)
{
    if (!size)
        return NULL;
    futex_down(&cwd_futex);
    if (size < cwd_len + 1) {
        futex_up(&cwd_futex);
        return NULL;
    }
    strcpy(buf, cwd_path);
    futex_up(&cwd_futex);
    return buf;
}
 
/** @}
 */
 

Rev 2763	Rev 2771
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/vfs.h>	35	#include <vfs/vfs.h>
36	#include <vfs/canonify.h>	36	#include <vfs/canonify.h>
37	#include <stdlib.h>	37	#include <stdlib.h>
38	#include <unistd.h>	38	#include <unistd.h>
39	#include <dirent.h>	39	#include <dirent.h>
40	#include <fcntl.h>	40	#include <fcntl.h>
41	#include <sys/stat.h>	41	#include <sys/stat.h>
-		42	#include <stdio.h>
42	#include <sys/types.h>	43	#include <sys/types.h>
43	#include <ipc/ipc.h>	44	#include <ipc/ipc.h>
44	#include <ipc/services.h>	45	#include <ipc/services.h>
45	#include <async.h>	46	#include <async.h>
46	#include <atomic.h>	47	#include <atomic.h>
47	#include <futex.h>	48	#include <futex.h>
48	#include <errno.h>	49	#include <errno.h>
49	#include <string.h>	50	#include <string.h>
50	#include "../../srv/vfs/vfs.h"	51	#include "../../srv/vfs/vfs.h"
51		52
52	int vfs_phone = -1;	53	int vfs_phone = -1;
53	futex_t vfs_phone_futex = FUTEX_INITIALIZER;	54	futex_t vfs_phone_futex = FUTEX_INITIALIZER;
54		55
55	futex_t cwd_futex = FUTEX_INITIALIZER;	56	futex_t cwd_futex = FUTEX_INITIALIZER;
56	DIR *cwd_dir = NULL;	57	DIR *cwd_dir = NULL;
57	char *cwd_path = NULL;	58	char *cwd_path = NULL;
58	size_t cwd_len = 0;	59	size_t cwd_len = 0;
59		60
60	static char absolutize(const char path)	61	static char absolutize(const char path, size_t *retlen)
61	{	62	{
62	char *ncwd_path;	63	char *ncwd_path;
63		64
64	futex_down(&cwd_futex);	65	futex_down(&cwd_futex);
65	size_t len = strlen(path);	66	size_t len = strlen(path);
66	if (*path != '/') {	67	if (*path != '/') {
67	if (!cwd_path) {	68	if (!cwd_path) {
68	futex_up(&cwd_futex);	69	futex_up(&cwd_futex);
69	return NULL;	70	return NULL;
70	}	71	}
71	ncwd_path = malloc(len + cwd_len + 1);	72	ncwd_path = malloc(len + cwd_len + 1);
72	if (!ncwd_path) {	73	if (!ncwd_path) {
73	futex_up(&cwd_futex);	74	futex_up(&cwd_futex);
74	return NULL;	75	return NULL;
75	}	76	}
76	strcpy(ncwd_path, cwd_path);	77	strcpy(ncwd_path, cwd_path);
77	ncwd_path[cwd_len] = '/';	78	ncwd_path[cwd_len] = '/';
78	ncwd_path[cwd_len + 1] = '\0';	79	ncwd_path[cwd_len + 1] = '\0';
79	} else {	80	} else {
80	ncwd_path = malloc(len + 1);	81	ncwd_path = malloc(len + 1);
81	if (!ncwd_path) {	82	if (!ncwd_path) {
82	futex_up(&cwd_futex);	83	futex_up(&cwd_futex);
83	return NULL;	84	return NULL;
84	}	85	}
85	ncwd_path[0] = '\0';	86	ncwd_path[0] = '\0';
86	}	87	}
87	strcat(ncwd_path, path);	88	strcat(ncwd_path, path);
-		89	if (!canonify(ncwd_path, retlen)) {
-		90	futex_up(&cwd_futex);
-		91	free(ncwd_path);
-		92	return NULL;
-		93	}
88	futex_up(&cwd_futex);	94	futex_up(&cwd_futex);
89	return ncwd_path;	95	return ncwd_path;
90	}	96	}
91		97
92	static int vfs_connect(void)	98	static int vfs_connect(void)
93	{	99	{
94	if (vfs_phone < 0)	100	if (vfs_phone < 0)
95	vfs_phone = ipc_connect_me_to(PHONE_NS, SERVICE_VFS, 0, 0);	101	vfs_phone = ipc_connect_me_to(PHONE_NS, SERVICE_VFS, 0, 0);
96	return vfs_phone;	102	return vfs_phone;
97	}	103	}
98		104
99	int mount(const char fs_name, const char mp, const char *dev)	105	int mount(const char fs_name, const char mp, const char *dev)
100	{	106	{
101	int res;	107	int res;
102	ipcarg_t rc;	108	ipcarg_t rc;
103	aid_t req;	109	aid_t req;
104		110
105	int dev_handle = 0; /* TODO */	111	dev_handle_t dev_handle = 0; /* TODO */
106		112
-		113	size_t mpa_len;
107	char *mpa = absolutize(mp);	114	char *mpa = absolutize(mp, &mpa_len);
108	if (!mpa)	115	if (!mpa)
109	return ENOMEM;	116	return ENOMEM;
110	size_t mpc_len;	-
111	char *mpc = canonify(mpa, &mpc_len);	-
112	if (!mpc) {	-
113	free(mpa);	-
114	return EINVAL;	-
115	}	-
116		117
117	futex_down(&vfs_phone_futex);	118	futex_down(&vfs_phone_futex);
118	async_serialize_start();	119	async_serialize_start();
119	if (vfs_phone < 0) {	120	if (vfs_phone < 0) {
120	res = vfs_connect();	121	res = vfs_connect();
121	if (res < 0) {	122	if (res < 0) {
122	async_serialize_end();	123	async_serialize_end();
123	futex_up(&vfs_phone_futex);	124	futex_up(&vfs_phone_futex);
124	free(mpa);	125	free(mpa);
125	return res;	126	return res;
126	}	127	}
127	}	128	}
128	req = async_send_1(vfs_phone, VFS_MOUNT, dev_handle, NULL);	129	req = async_send_1(vfs_phone, VFS_MOUNT, dev_handle, NULL);
129	rc = ipc_data_write_start(vfs_phone, (void *)fs_name, strlen(fs_name));	130	rc = ipc_data_write_start(vfs_phone, (void *)fs_name, strlen(fs_name));
130	if (rc != EOK) {	131	if (rc != EOK) {
131	async_wait_for(req, NULL);	132	async_wait_for(req, NULL);
132	async_serialize_end();	133	async_serialize_end();
133	futex_up(&vfs_phone_futex);	134	futex_up(&vfs_phone_futex);
134	free(mpa);	135	free(mpa);
135	return (int) rc;	136	return (int) rc;
136	}	137	}
137	rc = ipc_data_write_start(vfs_phone, (void *)mpc, mpc_len);	138	rc = ipc_data_write_start(vfs_phone, (void *)mpa, mpa_len);
138	if (rc != EOK) {	139	if (rc != EOK) {
139	async_wait_for(req, NULL);	140	async_wait_for(req, NULL);
140	async_serialize_end();	141	async_serialize_end();
141	futex_up(&vfs_phone_futex);	142	futex_up(&vfs_phone_futex);
142	free(mpa);	143	free(mpa);
143	return (int) rc;	144	return (int) rc;
144	}	145	}
145	async_wait_for(req, &rc);	146	async_wait_for(req, &rc);
146	async_serialize_end();	147	async_serialize_end();
147	futex_up(&vfs_phone_futex);	148	futex_up(&vfs_phone_futex);
148	free(mpa);	149	free(mpa);
149	return (int) rc;	150	return (int) rc;
150	}	151	}
151		152
152	static int _open(const char *path, int lflag, int oflag, ...)	153	static int _open(const char *path, int lflag, int oflag, ...)
153	{	154	{
154	int res;	155	int res;
155	ipcarg_t rc;	156	ipcarg_t rc;
156	ipc_call_t answer;	157	ipc_call_t answer;
157	aid_t req;	158	aid_t req;
158		159
-		160	size_t pa_len;
159	char *pa = absolutize(path);	161	char *pa = absolutize(path, &pa_len);
160	if (!pa)	162	if (!pa)
161	return ENOMEM;	163	return ENOMEM;
162	size_t pc_len;	-
163	char *pc = canonify(pa, &pc_len);	-
164	if (!pc) {	-
165	free(pa);	-
166	return EINVAL;	-
167	}	-
168		164
169	futex_down(&vfs_phone_futex);	165	futex_down(&vfs_phone_futex);
170	async_serialize_start();	166	async_serialize_start();
171	if (vfs_phone < 0) {	167	if (vfs_phone < 0) {
172	res = vfs_connect();	168	res = vfs_connect();
173	if (res < 0) {	169	if (res < 0) {
174	async_serialize_end();	170	async_serialize_end();
175	futex_up(&vfs_phone_futex);	171	futex_up(&vfs_phone_futex);
176	free(pa);	172	free(pa);
177	return res;	173	return res;
178	}	174	}
179	}	175	}
180	req = async_send_3(vfs_phone, VFS_OPEN, lflag, oflag, 0, &answer);	176	req = async_send_3(vfs_phone, VFS_OPEN, lflag, oflag, 0, &answer);
181	rc = ipc_data_write_start(vfs_phone, pc, pc_len);	177	rc = ipc_data_write_start(vfs_phone, pa, pa_len);
182	if (rc != EOK) {	178	if (rc != EOK) {
183	async_wait_for(req, NULL);	179	async_wait_for(req, NULL);
184	async_serialize_end();	180	async_serialize_end();
185	futex_up(&vfs_phone_futex);	181	futex_up(&vfs_phone_futex);
186	free(pa);	182	free(pa);
187	return (int) rc;	183	return (int) rc;
188	}	184	}
189	async_wait_for(req, &rc);	185	async_wait_for(req, &rc);
190	async_serialize_end();	186	async_serialize_end();
191	futex_up(&vfs_phone_futex);	187	futex_up(&vfs_phone_futex);
192	free(pa);	188	free(pa);
193	return (int) IPC_GET_ARG1(answer);	189	return (int) IPC_GET_ARG1(answer);
194	}	190	}
195		191
196	int open(const char *path, int oflag, ...)	192	int open(const char *path, int oflag, ...)
197	{	193	{
198	return _open(path, L_FILE, oflag);	194	return _open(path, L_FILE, oflag);
199	}	195	}
200		196
201	int close(int fildes)	197	int close(int fildes)
202	{	198	{
203	int res;	199	int res;
204	ipcarg_t rc;	200	ipcarg_t rc;
205		201
206	futex_down(&vfs_phone_futex);	202	futex_down(&vfs_phone_futex);
207	async_serialize_start();	203	async_serialize_start();
208	if (vfs_phone < 0) {	204	if (vfs_phone < 0) {
209	res = vfs_connect();	205	res = vfs_connect();
210	if (res < 0) {	206	if (res < 0) {
211	async_serialize_end();	207	async_serialize_end();
212	futex_up(&vfs_phone_futex);	208	futex_up(&vfs_phone_futex);
213	return res;	209	return res;
214	}	210	}
215	}	211	}
216		212
217	rc = async_req_1_0(vfs_phone, VFS_CLOSE, fildes);	213	rc = async_req_1_0(vfs_phone, VFS_CLOSE, fildes);
218		214
219	async_serialize_end();	215	async_serialize_end();
220	futex_up(&vfs_phone_futex);	216	futex_up(&vfs_phone_futex);
221		217
222	return (int)rc;	218	return (int)rc;
223	}	219	}
224		220
225	ssize_t read(int fildes, void *buf, size_t nbyte)	221	ssize_t read(int fildes, void *buf, size_t nbyte)
226	{	222	{
227	int res;	223	int res;
228	ipcarg_t rc;	224	ipcarg_t rc;
229	ipc_call_t answer;	225	ipc_call_t answer;
230	aid_t req;	226	aid_t req;
231		227
232	futex_down(&vfs_phone_futex);	228	futex_down(&vfs_phone_futex);
233	async_serialize_start();	229	async_serialize_start();
234	if (vfs_phone < 0) {	230	if (vfs_phone < 0) {
235	res = vfs_connect();	231	res = vfs_connect();
236	if (res < 0) {	232	if (res < 0) {
237	async_serialize_end();	233	async_serialize_end();
238	futex_up(&vfs_phone_futex);	234	futex_up(&vfs_phone_futex);
239	return res;	235	return res;
240	}	236	}
241	}	237	}
242	req = async_send_1(vfs_phone, VFS_READ, fildes, &answer);	238	req = async_send_1(vfs_phone, VFS_READ, fildes, &answer);
243	rc = ipc_data_read_start(vfs_phone, (void *)buf, nbyte);	239	rc = ipc_data_read_start(vfs_phone, (void *)buf, nbyte);
244	if (rc != EOK) {	240	if (rc != EOK) {
245	async_wait_for(req, NULL);	241	async_wait_for(req, NULL);
246	async_serialize_end();	242	async_serialize_end();
247	futex_up(&vfs_phone_futex);	243	futex_up(&vfs_phone_futex);
248	return (ssize_t) rc;	244	return (ssize_t) rc;
249	}	245	}
250	async_wait_for(req, &rc);	246	async_wait_for(req, &rc);
251	async_serialize_end();	247	async_serialize_end();
252	futex_up(&vfs_phone_futex);	248	futex_up(&vfs_phone_futex);
253	if (rc == EOK)	249	if (rc == EOK)
254	return (ssize_t) IPC_GET_ARG1(answer);	250	return (ssize_t) IPC_GET_ARG1(answer);
255	else	251	else
256	return -1;	252	return -1;
257	}	253	}
258		254
259	ssize_t write(int fildes, const void *buf, size_t nbyte)	255	ssize_t write(int fildes, const void *buf, size_t nbyte)
260	{	256	{
261	int res;	257	int res;
262	ipcarg_t rc;	258	ipcarg_t rc;
263	ipc_call_t answer;	259	ipc_call_t answer;
264	aid_t req;	260	aid_t req;
265		261
266	futex_down(&vfs_phone_futex);	262	futex_down(&vfs_phone_futex);
267	async_serialize_start();	263	async_serialize_start();
268	if (vfs_phone < 0) {	264	if (vfs_phone < 0) {
269	res = vfs_connect();	265	res = vfs_connect();
270	if (res < 0) {	266	if (res < 0) {
271	async_serialize_end();	267	async_serialize_end();
272	futex_up(&vfs_phone_futex);	268	futex_up(&vfs_phone_futex);
273	return res;	269	return res;
274	}	270	}
275	}	271	}
276	req = async_send_1(vfs_phone, VFS_WRITE, fildes, &answer);	272	req = async_send_1(vfs_phone, VFS_WRITE, fildes, &answer);
277	rc = ipc_data_write_start(vfs_phone, (void *)buf, nbyte);	273	rc = ipc_data_write_start(vfs_phone, (void *)buf, nbyte);
278	if (rc != EOK) {	274	if (rc != EOK) {
279	async_wait_for(req, NULL);	275	async_wait_for(req, NULL);
280	async_serialize_end();	276	async_serialize_end();
281	futex_up(&vfs_phone_futex);	277	futex_up(&vfs_phone_futex);
282	return (ssize_t) rc;	278	return (ssize_t) rc;
283	}	279	}
284	async_wait_for(req, &rc);	280	async_wait_for(req, &rc);
285	async_serialize_end();	281	async_serialize_end();
286	futex_up(&vfs_phone_futex);	282	futex_up(&vfs_phone_futex);
287	if (rc == EOK)	283	if (rc == EOK)
288	return (ssize_t) IPC_GET_ARG1(answer);	284	return (ssize_t) IPC_GET_ARG1(answer);
289	else	285	else
290	return -1;	286	return -1;
291	}	287	}
292		288
293	off_t lseek(int fildes, off_t offset, int whence)	289	off_t lseek(int fildes, off_t offset, int whence)
294	{	290	{
295	int res;	291	int res;
296	ipcarg_t rc;	292	ipcarg_t rc;
297		293
298	futex_down(&vfs_phone_futex);	294	futex_down(&vfs_phone_futex);
299	async_serialize_start();	295	async_serialize_start();
300	if (vfs_phone < 0) {	296	if (vfs_phone < 0) {
301	res = vfs_connect();	297	res = vfs_connect();
302	if (res < 0) {	298	if (res < 0) {
303	async_serialize_end();	299	async_serialize_end();
304	futex_up(&vfs_phone_futex);	300	futex_up(&vfs_phone_futex);
305	return res;	301	return res;
306	}	302	}
307	}	303	}
308		304
309	off_t newoffs;	305	off_t newoffs;
310	rc = async_req_3_1(vfs_phone, VFS_SEEK, fildes, offset, whence,	306	rc = async_req_3_1(vfs_phone, VFS_SEEK, fildes, offset, whence,
311	(ipcarg_t)&newoffs);	307	(ipcarg_t)&newoffs);
312		308
313	async_serialize_end();	309	async_serialize_end();
314	futex_up(&vfs_phone_futex);	310	futex_up(&vfs_phone_futex);
315		311
316	if (rc != EOK)	312	if (rc != EOK)
317	return (off_t) -1;	313	return (off_t) -1;
318		314
319	return newoffs;	315	return newoffs;
320	}	316	}
321		317
322	int ftruncate(int fildes, off_t length)	318	int ftruncate(int fildes, off_t length)
323	{	319	{
324	int res;	320	int res;
325	ipcarg_t rc;	321	ipcarg_t rc;
326		322
327	futex_down(&vfs_phone_futex);	323	futex_down(&vfs_phone_futex);
328	async_serialize_start();	324	async_serialize_start();
329	if (vfs_phone < 0) {	325	if (vfs_phone < 0) {
330	res = vfs_connect();	326	res = vfs_connect();
331	if (res < 0) {	327	if (res < 0) {
332	async_serialize_end();	328	async_serialize_end();
333	futex_up(&vfs_phone_futex);	329	futex_up(&vfs_phone_futex);
334	return res;	330	return res;
335	}	331	}
336	}	332	}
337	rc = async_req_2_0(vfs_phone, VFS_TRUNCATE, fildes, length);	333	rc = async_req_2_0(vfs_phone, VFS_TRUNCATE, fildes, length);
338	async_serialize_end();	334	async_serialize_end();
339	futex_up(&vfs_phone_futex);	335	futex_up(&vfs_phone_futex);
340	return (int) rc;	336	return (int) rc;
341	}	337	}
342		338
343	DIR opendir(const char dirname)	339	DIR opendir(const char dirname)
344	{	340	{
345	DIR *dirp = malloc(sizeof(DIR));	341	DIR *dirp = malloc(sizeof(DIR));
346	if (!dirp)	342	if (!dirp)
347	return NULL;	343	return NULL;
348	dirp->fd = _open(dirname, L_DIRECTORY, 0);	344	dirp->fd = _open(dirname, L_DIRECTORY, 0);
349	if (dirp->fd < 0) {	345	if (dirp->fd < 0) {
350	free(dirp);	346	free(dirp);
351	return NULL;	347	return NULL;
352	}	348	}
353	return dirp;	349	return dirp;
354	}	350	}
355		351
356	struct dirent readdir(DIR dirp)	352	struct dirent readdir(DIR dirp)
357	{	353	{
358	ssize_t len = read(dirp->fd, &dirp->res.d_name[0], NAME_MAX + 1);	354	ssize_t len = read(dirp->fd, &dirp->res.d_name[0], NAME_MAX + 1);
359	if (len <= 0)	355	if (len <= 0)
360	return NULL;	356	return NULL;
361	return &dirp->res;	357	return &dirp->res;
362	}	358	}
363		359
364	void rewinddir(DIR *dirp)	360	void rewinddir(DIR *dirp)
365	{	361	{
366	(void) lseek(dirp->fd, 0, SEEK_SET);	362	(void) lseek(dirp->fd, 0, SEEK_SET);
367	}	363	}
368		364
369	int closedir(DIR *dirp)	365	int closedir(DIR *dirp)
370	{	366	{
371	(void) close(dirp->fd);	367	(void) close(dirp->fd);
372	free(dirp);	368	free(dirp);
373	return 0;	369	return 0;
374	}	370	}
375		371
376	int mkdir(const char *path, mode_t mode)	372	int mkdir(const char *path, mode_t mode)
377	{	373	{
378	int res;	374	int res;
379	ipcarg_t rc;	375	ipcarg_t rc;
380	aid_t req;	376	aid_t req;
381		377
-		378	size_t pa_len;
382	char *pa = absolutize(path);	379	char *pa = absolutize(path, &pa_len);
383	if (!pa)	380	if (!pa)
384	return ENOMEM;	381	return ENOMEM;
385	size_t pc_len;	-
386	char *pc = canonify(pa, &pc_len);	-
387	if (!pc) {	-
388	free(pa);	-
389	return EINVAL;	-
390	}	-
391		382
392	futex_down(&vfs_phone_futex);	383	futex_down(&vfs_phone_futex);
393	async_serialize_start();	384	async_serialize_start();
394	if (vfs_phone < 0) {	385	if (vfs_phone < 0) {
395	res = vfs_connect();	386	res = vfs_connect();
396	if (res < 0) {	387	if (res < 0) {
397	async_serialize_end();	388	async_serialize_end();
398	futex_up(&vfs_phone_futex);	389	futex_up(&vfs_phone_futex);
399	free(pa);	390	free(pa);
400	return res;	391	return res;
401	}	392	}
402	}	393	}
403	req = async_send_1(vfs_phone, VFS_MKDIR, mode, NULL);	394	req = async_send_1(vfs_phone, VFS_MKDIR, mode, NULL);
404	rc = ipc_data_write_start(vfs_phone, pc, pc_len);	395	rc = ipc_data_write_start(vfs_phone, pa, pa_len);
405	if (rc != EOK) {	396	if (rc != EOK) {
406	async_wait_for(req, NULL);	397	async_wait_for(req, NULL);
407	async_serialize_end();	398	async_serialize_end();
408	futex_up(&vfs_phone_futex);	399	futex_up(&vfs_phone_futex);
409	free(pa);	400	free(pa);
410	return (int) rc;	401	return (int) rc;
411	}	402	}
412	async_wait_for(req, &rc);	403	async_wait_for(req, &rc);
413	async_serialize_end();	404	async_serialize_end();
414	futex_up(&vfs_phone_futex);	405	futex_up(&vfs_phone_futex);
415	free(pa);	406	free(pa);
416	return rc;	407	return rc;
417	}	408	}
418		409
419	static int _unlink(const char *path, int lflag)	410	static int _unlink(const char *path, int lflag)
420	{	411	{
421	int res;	412	int res;
422	ipcarg_t rc;	413	ipcarg_t rc;
423	aid_t req;	414	aid_t req;
424		415
-		416	size_t pa_len;
425	char *pa = absolutize(path);	417	char *pa = absolutize(path, &pa_len);
426	if (!pa)	418	if (!pa)
427	return ENOMEM;	419	return ENOMEM;
428	size_t pc_len;	-
429	char *pc = canonify(pa, &pc_len);	-
430	if (!pc) {	-
431	free(pa);	-
432	return EINVAL;	-
433	}	420
434	futex_down(&vfs_phone_futex);	421	futex_down(&vfs_phone_futex);
435	async_serialize_start();	422	async_serialize_start();
436	if (vfs_phone < 0) {	423	if (vfs_phone < 0) {
437	res = vfs_connect();	424	res = vfs_connect();
438	if (res < 0) {	425	if (res < 0) {
439	async_serialize_end();	426	async_serialize_end();
440	futex_up(&vfs_phone_futex);	427	futex_up(&vfs_phone_futex);
441	free(pa);	428	free(pa);
442	return res;	429	return res;
443	}	430	}
444	}	431	}
445	req = async_send_0(vfs_phone, VFS_UNLINK, NULL);	432	req = async_send_0(vfs_phone, VFS_UNLINK, NULL);
446	rc = ipc_data_write_start(vfs_phone, pc, pc_len);	433	rc = ipc_data_write_start(vfs_phone, pa, pa_len);
447	if (rc != EOK) {	434	if (rc != EOK) {
448	async_wait_for(req, NULL);	435	async_wait_for(req, NULL);
449	async_serialize_end();	436	async_serialize_end();
450	futex_up(&vfs_phone_futex);	437	futex_up(&vfs_phone_futex);
451	free(pa);	438	free(pa);
452	return (int) rc;	439	return (int) rc;
453	}	440	}
454	async_wait_for(req, &rc);	441	async_wait_for(req, &rc);
455	async_serialize_end();	442	async_serialize_end();
456	futex_up(&vfs_phone_futex);	443	futex_up(&vfs_phone_futex);
457	free(pa);	444	free(pa);
458	return rc;	445	return rc;
459	}	446	}
460		447
461	int unlink(const char *path)	448	int unlink(const char *path)
462	{	449	{
463	return _unlink(path, L_NONE);	450	return _unlink(path, L_NONE);
464	}	451	}
465		452
466	int rmdir(const char *path)	453	int rmdir(const char *path)
467	{	454	{
468	return _unlink(path, L_DIRECTORY);	455	return _unlink(path, L_DIRECTORY);
469	}	456	}
470		457
471	int rename(const char old, const char new)	458	int rename(const char old, const char new)
472	{	459	{
473	int res;	460	int res;
474	ipcarg_t rc;	461	ipcarg_t rc;
475	aid_t req;	462	aid_t req;
476		463
-		464	size_t olda_len;
477	char *olda = absolutize(old);	465	char *olda = absolutize(old, &olda_len);
478	if (!olda)	466	if (!olda)
479	return ENOMEM;	467	return ENOMEM;
-		468
480	size_t oldc_len;	469	size_t newa_len;
481	char *oldc = canonify(olda, &oldc_len);	-
482	if (!oldc) {	-
483	free(olda);	-
484	return EINVAL;	-
485	}	-
486	char *newa = absolutize(new);	470	char *newa = absolutize(new, &newa_len);
487	if (!newa) {	471	if (!newa) {
488	free(olda);	472	free(olda);

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(root)/branches/dd/uspace/lib/libc/generic/vfs/vfs.c @ 4688 – Rev 2763 → 2771