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| Rev | Author | Line No. | Line |
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| 2671 | jermar | 1 | /* |
| 2684 | jermar | 2 | * Copyright (c) 2008 Jakub Jermar |
| 2671 | jermar | 3 | * All rights reserved. |
| 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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| 2694 | jermar | 36 | #include <stdlib.h> |
| 2674 | jermar | 37 | #include <unistd.h> |
| 2694 | jermar | 38 | #include <dirent.h> |
| 2674 | jermar | 39 | #include <fcntl.h> |
| 2707 | jermar | 40 | #include <sys/stat.h> |
| 41 | #include <sys/types.h> |
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| 2671 | jermar | 42 | #include <ipc/ipc.h> |
| 43 | #include <ipc/services.h> |
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| 44 | #include <async.h> |
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| 45 | #include <atomic.h> |
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| 46 | #include <futex.h> |
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| 47 | #include <errno.h> |
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| 48 | #include <string.h> |
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| 49 | #include "../../srv/vfs/vfs.h" |
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| 50 | |||
| 51 | int vfs_phone = -1; |
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| 52 | atomic_t vfs_phone_futex = FUTEX_INITIALIZER; |
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| 53 | |||
| 54 | static int vfs_connect(void) |
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| 55 | { |
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| 56 | if (vfs_phone < 0) |
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| 57 | vfs_phone = ipc_connect_me_to(PHONE_NS, SERVICE_VFS, 0, 0); |
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| 58 | return vfs_phone; |
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| 59 | } |
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| 60 | |||
| 61 | int mount(const char *fs_name, const char *mp, const char *dev) |
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| 62 | { |
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| 63 | int res; |
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| 64 | ipcarg_t rc; |
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| 65 | aid_t req; |
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| 66 | |||
| 67 | int dev_handle = 0; /* TODO */ |
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| 68 | |||
| 69 | futex_down(&vfs_phone_futex); |
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| 70 | async_serialize_start(); |
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| 71 | if (vfs_phone < 0) { |
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| 72 | res = vfs_connect(); |
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| 73 | if (res < 0) { |
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| 74 | async_serialize_end(); |
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| 75 | futex_up(&vfs_phone_futex); |
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| 76 | return res; |
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| 77 | } |
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| 78 | } |
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| 79 | req = async_send_1(vfs_phone, VFS_MOUNT, dev_handle, NULL); |
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| 2678 | jermar | 80 | rc = ipc_data_write_start(vfs_phone, (void *)fs_name, strlen(fs_name)); |
| 2671 | jermar | 81 | if (rc != EOK) { |
| 82 | async_wait_for(req, NULL); |
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| 83 | async_serialize_end(); |
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| 84 | futex_up(&vfs_phone_futex); |
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| 85 | return (int) rc; |
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| 86 | } |
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| 2678 | jermar | 87 | rc = ipc_data_write_start(vfs_phone, (void *)mp, strlen(mp)); |
| 2671 | jermar | 88 | if (rc != EOK) { |
| 89 | async_wait_for(req, NULL); |
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| 90 | async_serialize_end(); |
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| 91 | futex_up(&vfs_phone_futex); |
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| 92 | return (int) rc; |
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| 93 | } |
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| 94 | async_wait_for(req, &rc); |
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| 95 | async_serialize_end(); |
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| 96 | futex_up(&vfs_phone_futex); |
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| 97 | return (int) rc; |
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| 98 | } |
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| 99 | |||
| 2700 | jermar | 100 | static int _open(const char *path, int lflag, int oflag, ...) |
| 2671 | jermar | 101 | { |
| 102 | int res; |
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| 103 | ipcarg_t rc; |
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| 104 | ipc_call_t answer; |
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| 105 | aid_t req; |
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| 106 | |||
| 107 | futex_down(&vfs_phone_futex); |
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| 108 | async_serialize_start(); |
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| 109 | if (vfs_phone < 0) { |
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| 110 | res = vfs_connect(); |
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| 111 | if (res < 0) { |
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| 112 | async_serialize_end(); |
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| 113 | futex_up(&vfs_phone_futex); |
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| 114 | return res; |
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| 115 | } |
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| 116 | } |
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| 2700 | jermar | 117 | req = async_send_3(vfs_phone, VFS_OPEN, lflag, oflag, 0, &answer); |
| 2693 | jermar | 118 | rc = ipc_data_write_start(vfs_phone, path, strlen(path)); |
| 2671 | jermar | 119 | if (rc != EOK) { |
| 120 | async_wait_for(req, NULL); |
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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) rc; |
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| 124 | } |
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| 125 | async_wait_for(req, &rc); |
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| 126 | async_serialize_end(); |
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| 127 | futex_up(&vfs_phone_futex); |
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| 128 | return (int) IPC_GET_ARG1(answer); |
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| 129 | } |
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| 130 | |||
| 2700 | jermar | 131 | int open(const char *path, int oflag, ...) |
| 132 | { |
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| 133 | return _open(path, L_FILE, oflag); |
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| 134 | } |
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| 135 | |||
| 2707 | jermar | 136 | int close(int fildes) |
| 137 | { |
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| 2734 | jermar | 138 | int res; |
| 139 | ipcarg_t rc; |
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| 140 | |||
| 141 | futex_down(&vfs_phone_futex); |
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| 142 | async_serialize_start(); |
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| 143 | if (vfs_phone < 0) { |
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| 144 | res = vfs_connect(); |
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| 145 | if (res < 0) { |
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| 146 | async_serialize_end(); |
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| 147 | futex_up(&vfs_phone_futex); |
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| 148 | return res; |
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| 149 | } |
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| 150 | } |
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| 151 | |||
| 152 | rc = async_req_1_0(vfs_phone, VFS_CLOSE, fildes); |
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| 153 | |||
| 154 | async_serialize_end(); |
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| 155 | futex_up(&vfs_phone_futex); |
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| 156 | |||
| 157 | return (int)rc; |
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| 2707 | jermar | 158 | } |
| 159 | |||
| 2671 | jermar | 160 | ssize_t read(int fildes, void *buf, size_t nbyte) |
| 161 | { |
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| 162 | int res; |
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| 163 | ipcarg_t rc; |
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| 164 | ipc_call_t answer; |
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| 165 | aid_t req; |
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| 166 | |||
| 167 | futex_down(&vfs_phone_futex); |
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| 168 | async_serialize_start(); |
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| 169 | if (vfs_phone < 0) { |
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| 170 | res = vfs_connect(); |
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| 171 | if (res < 0) { |
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| 172 | async_serialize_end(); |
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| 173 | futex_up(&vfs_phone_futex); |
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| 174 | return res; |
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| 175 | } |
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| 176 | } |
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| 2674 | jermar | 177 | req = async_send_1(vfs_phone, VFS_READ, fildes, &answer); |
| 2678 | jermar | 178 | if (ipc_data_read_start(vfs_phone, (void *)buf, nbyte) != EOK) { |
| 2671 | jermar | 179 | async_wait_for(req, NULL); |
| 180 | async_serialize_end(); |
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| 181 | futex_up(&vfs_phone_futex); |
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| 182 | return (ssize_t) rc; |
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| 183 | } |
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| 184 | async_wait_for(req, &rc); |
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| 185 | async_serialize_end(); |
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| 186 | futex_up(&vfs_phone_futex); |
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| 2710 | jermar | 187 | if (rc == EOK) |
| 188 | return (ssize_t) IPC_GET_ARG1(answer); |
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| 189 | else |
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| 190 | return -1; |
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| 2671 | jermar | 191 | } |
| 192 | |||
| 2674 | jermar | 193 | ssize_t write(int fildes, const void *buf, size_t nbyte) |
| 194 | { |
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| 195 | int res; |
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| 196 | ipcarg_t rc; |
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| 197 | ipc_call_t answer; |
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| 198 | aid_t req; |
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| 199 | |||
| 200 | futex_down(&vfs_phone_futex); |
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| 201 | async_serialize_start(); |
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| 202 | if (vfs_phone < 0) { |
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| 203 | res = vfs_connect(); |
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| 204 | if (res < 0) { |
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| 205 | async_serialize_end(); |
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| 206 | futex_up(&vfs_phone_futex); |
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| 207 | return res; |
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| 208 | } |
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| 209 | } |
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| 210 | req = async_send_1(vfs_phone, VFS_WRITE, fildes, &answer); |
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| 2678 | jermar | 211 | if (ipc_data_write_start(vfs_phone, (void *)buf, nbyte) != EOK) { |
| 2674 | jermar | 212 | async_wait_for(req, NULL); |
| 213 | async_serialize_end(); |
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| 214 | futex_up(&vfs_phone_futex); |
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| 215 | return (ssize_t) rc; |
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| 216 | } |
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| 217 | async_wait_for(req, &rc); |
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| 218 | async_serialize_end(); |
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| 219 | futex_up(&vfs_phone_futex); |
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| 2710 | jermar | 220 | if (rc == EOK) |
| 221 | return (ssize_t) IPC_GET_ARG1(answer); |
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| 222 | else |
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| 223 | return -1; |
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| 2674 | jermar | 224 | } |
| 2684 | jermar | 225 | |
| 226 | off_t lseek(int fildes, off_t offset, int whence) |
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| 227 | { |
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| 228 | int res; |
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| 229 | ipcarg_t rc; |
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| 230 | |||
| 231 | futex_down(&vfs_phone_futex); |
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| 232 | async_serialize_start(); |
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| 233 | if (vfs_phone < 0) { |
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| 234 | res = vfs_connect(); |
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| 235 | if (res < 0) { |
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| 236 | async_serialize_end(); |
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| 237 | futex_up(&vfs_phone_futex); |
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| 238 | return res; |
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| 239 | } |
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| 240 | } |
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| 241 | |||
| 242 | off_t newoffs; |
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| 243 | rc = async_req_3_1(vfs_phone, VFS_SEEK, fildes, offset, whence, |
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| 2707 | jermar | 244 | (ipcarg_t)&newoffs); |
| 2684 | jermar | 245 | |
| 246 | async_serialize_end(); |
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| 247 | futex_up(&vfs_phone_futex); |
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| 248 | |||
| 249 | if (rc != EOK) |
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| 250 | return (off_t) -1; |
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| 251 | |||
| 252 | return newoffs; |
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| 253 | } |
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| 254 | |||
| 2693 | jermar | 255 | int ftruncate(int fildes, off_t length) |
| 256 | { |
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| 257 | int res; |
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| 258 | ipcarg_t rc; |
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| 259 | |||
| 260 | futex_down(&vfs_phone_futex); |
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| 261 | async_serialize_start(); |
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| 262 | if (vfs_phone < 0) { |
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| 263 | res = vfs_connect(); |
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| 264 | if (res < 0) { |
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| 265 | async_serialize_end(); |
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| 266 | futex_up(&vfs_phone_futex); |
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| 267 | return res; |
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| 268 | } |
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| 269 | } |
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| 270 | rc = async_req_2_0(vfs_phone, VFS_TRUNCATE, fildes, length); |
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| 271 | async_serialize_end(); |
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| 272 | futex_up(&vfs_phone_futex); |
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| 273 | return (int) rc; |
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| 274 | } |
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| 275 | |||
| 2694 | jermar | 276 | DIR *opendir(const char *dirname) |
| 277 | { |
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| 278 | DIR *dirp = malloc(sizeof(DIR)); |
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| 279 | if (!dirp) |
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| 280 | return NULL; |
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| 2700 | jermar | 281 | dirp->fd = _open(dirname, L_DIRECTORY, 0); |
| 2699 | jermar | 282 | if (dirp->fd < 0) { |
| 2694 | jermar | 283 | free(dirp); |
| 284 | return NULL; |
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| 285 | } |
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| 286 | return dirp; |
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| 287 | } |
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| 288 | |||
| 289 | struct dirent *readdir(DIR *dirp) |
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| 290 | { |
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| 2699 | jermar | 291 | ssize_t len = read(dirp->fd, &dirp->res.d_name[0], NAME_MAX + 1); |
| 292 | if (len <= 0) |
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| 293 | return NULL; |
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| 294 | return &dirp->res; |
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| 2694 | jermar | 295 | } |
| 296 | |||
| 297 | void rewinddir(DIR *dirp) |
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| 298 | { |
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| 2699 | jermar | 299 | (void) lseek(dirp->fd, 0, SEEK_SET); |
| 2694 | jermar | 300 | } |
| 301 | |||
| 302 | int closedir(DIR *dirp) |
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| 303 | { |
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| 304 | (void) close(dirp->fd); |
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| 305 | free(dirp); |
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| 306 | return 0; |
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| 307 | } |
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| 308 | |||
| 2707 | jermar | 309 | int mkdir(const char *path, mode_t mode) |
| 2694 | jermar | 310 | { |
| 2707 | jermar | 311 | int res; |
| 312 | ipcarg_t rc; |
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| 313 | ipc_call_t answer; |
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| 314 | aid_t req; |
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| 315 | |||
| 316 | futex_down(&vfs_phone_futex); |
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| 317 | async_serialize_start(); |
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| 318 | if (vfs_phone < 0) { |
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| 319 | res = vfs_connect(); |
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| 320 | if (res < 0) { |
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| 321 | async_serialize_end(); |
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| 322 | futex_up(&vfs_phone_futex); |
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| 323 | return res; |
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| 324 | } |
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| 325 | } |
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| 326 | req = async_send_1(vfs_phone, VFS_MKDIR, mode, &answer); |
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| 327 | rc = ipc_data_write_start(vfs_phone, path, strlen(path)); |
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| 328 | if (rc != EOK) { |
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| 329 | async_wait_for(req, NULL); |
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| 330 | async_serialize_end(); |
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| 331 | futex_up(&vfs_phone_futex); |
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| 332 | return (int) rc; |
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| 333 | } |
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| 334 | async_wait_for(req, &rc); |
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| 335 | async_serialize_end(); |
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| 336 | futex_up(&vfs_phone_futex); |
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| 337 | return EOK; |
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| 2694 | jermar | 338 | } |
| 339 | |||
| 2671 | jermar | 340 | /** @} |
| 341 | */ |