Rev 2674 | Go to most recent revision | Details | Last modification | View Log | RSS feed
| Rev | Author | Line No. | Line |
|---|---|---|---|
| 2671 | jermar | 1 | /* |
| 2 | * Copyright (c) 2007 Jakub Jermar |
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| 3 | * All rights reserved. |
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| 4 | * |
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| 5 | * Redistribution and use in source and binary forms, with or without |
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| 6 | * modification, are permitted provided that the following conditions |
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| 7 | * are met: |
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| 8 | * |
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| 9 | * - Redistributions of source code must retain the above copyright |
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| 10 | * notice, this list of conditions and the following disclaimer. |
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| 11 | * - Redistributions in binary form must reproduce the above copyright |
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| 12 | * notice, this list of conditions and the following disclaimer in the |
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| 13 | * documentation and/or other materials provided with the distribution. |
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| 14 | * - The name of the author may not be used to endorse or promote products |
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| 15 | * derived from this software without specific prior written permission. |
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| 16 | * |
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| 17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
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| 18 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
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| 19 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
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| 20 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
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| 21 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
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| 22 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
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| 23 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
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| 24 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
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| 25 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
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| 26 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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| 27 | */ |
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| 28 | |||
| 29 | /** @addtogroup libc |
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| 30 | * @{ |
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| 31 | */ |
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| 32 | /** @file |
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| 33 | */ |
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| 34 | |||
| 35 | #include <vfs.h> |
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| 36 | #include <ipc/ipc.h> |
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| 37 | #include <ipc/services.h> |
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| 38 | #include <async.h> |
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| 39 | #include <atomic.h> |
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| 40 | #include <futex.h> |
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| 41 | #include <errno.h> |
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| 42 | #include <string.h> |
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| 43 | #include "../../srv/vfs/vfs.h" |
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| 44 | |||
| 45 | int vfs_phone = -1; |
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| 46 | atomic_t vfs_phone_futex = FUTEX_INITIALIZER; |
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| 47 | |||
| 48 | static int vfs_connect(void) |
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| 49 | { |
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| 50 | if (vfs_phone < 0) |
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| 51 | vfs_phone = ipc_connect_me_to(PHONE_NS, SERVICE_VFS, 0, 0); |
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| 52 | return vfs_phone; |
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| 53 | } |
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| 54 | |||
| 55 | int mount(const char *fs_name, const char *mp, const char *dev) |
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| 56 | { |
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| 57 | int res; |
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| 58 | ipcarg_t rc; |
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| 59 | aid_t req; |
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| 60 | |||
| 61 | int dev_handle = 0; /* TODO */ |
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| 62 | |||
| 63 | futex_down(&vfs_phone_futex); |
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| 64 | async_serialize_start(); |
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| 65 | if (vfs_phone < 0) { |
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| 66 | res = vfs_connect(); |
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| 67 | if (res < 0) { |
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| 68 | async_serialize_end(); |
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| 69 | futex_up(&vfs_phone_futex); |
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| 70 | return res; |
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| 71 | } |
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| 72 | } |
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| 73 | req = async_send_1(vfs_phone, VFS_MOUNT, dev_handle, NULL); |
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| 74 | rc = ipc_data_write_send(vfs_phone, (void *)fs_name, strlen(fs_name)); |
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| 75 | if (rc != EOK) { |
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| 76 | async_wait_for(req, NULL); |
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| 77 | async_serialize_end(); |
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| 78 | futex_up(&vfs_phone_futex); |
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| 79 | return (int) rc; |
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| 80 | } |
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| 81 | rc = ipc_data_write_send(vfs_phone, (void *)mp, strlen(mp)); |
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| 82 | if (rc != EOK) { |
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| 83 | async_wait_for(req, NULL); |
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| 84 | async_serialize_end(); |
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| 85 | futex_up(&vfs_phone_futex); |
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| 86 | return (int) rc; |
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| 87 | } |
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| 88 | async_wait_for(req, &rc); |
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| 89 | async_serialize_end(); |
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| 90 | futex_up(&vfs_phone_futex); |
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| 91 | return (int) rc; |
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| 92 | } |
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| 93 | |||
| 94 | |||
| 95 | int open(const char *name, int oflag, ...) |
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| 96 | { |
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| 97 | int res; |
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| 98 | ipcarg_t rc; |
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| 99 | ipc_call_t answer; |
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| 100 | aid_t req; |
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| 101 | |||
| 102 | futex_down(&vfs_phone_futex); |
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| 103 | async_serialize_start(); |
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| 104 | if (vfs_phone < 0) { |
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| 105 | res = vfs_connect(); |
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| 106 | if (res < 0) { |
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| 107 | async_serialize_end(); |
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| 108 | futex_up(&vfs_phone_futex); |
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| 109 | return res; |
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| 110 | } |
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| 111 | } |
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| 112 | req = async_send_2(vfs_phone, VFS_OPEN, oflag, 0, &answer); |
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| 113 | rc = ipc_data_write_send(vfs_phone, name, strlen(name)); |
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| 114 | if (rc != EOK) { |
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| 115 | async_wait_for(req, NULL); |
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| 116 | async_serialize_end(); |
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| 117 | futex_up(&vfs_phone_futex); |
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| 118 | return (int) rc; |
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| 119 | } |
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| 120 | async_wait_for(req, &rc); |
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| 121 | async_serialize_end(); |
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| 122 | futex_up(&vfs_phone_futex); |
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| 123 | return (int) IPC_GET_ARG1(answer); |
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| 124 | } |
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| 125 | |||
| 126 | ssize_t read(int fildes, void *buf, size_t nbyte) |
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| 127 | { |
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| 128 | int res; |
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| 129 | ipcarg_t rc; |
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| 130 | ipc_call_t answer; |
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| 131 | aid_t req; |
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| 132 | |||
| 133 | futex_down(&vfs_phone_futex); |
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| 134 | async_serialize_start(); |
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| 135 | if (vfs_phone < 0) { |
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| 136 | res = vfs_connect(); |
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| 137 | if (res < 0) { |
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| 138 | async_serialize_end(); |
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| 139 | futex_up(&vfs_phone_futex); |
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| 140 | return res; |
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| 141 | } |
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| 142 | } |
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| 143 | req = async_send_1(vfs_phone, VFS_READ, 0, &answer); |
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| 144 | if (ipc_data_read_send(vfs_phone, buf, sizeof(buf)) != EOK) { |
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| 145 | async_wait_for(req, NULL); |
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| 146 | async_serialize_end(); |
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| 147 | futex_up(&vfs_phone_futex); |
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| 148 | return (ssize_t) rc; |
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| 149 | } |
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| 150 | async_wait_for(req, &rc); |
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| 151 | async_serialize_end(); |
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| 152 | futex_up(&vfs_phone_futex); |
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| 153 | return (ssize_t) IPC_GET_ARG1(answer); |
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| 154 | } |
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| 155 | |||
| 156 | /** @} |
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| 157 | */ |