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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); |
| 2741 | jermar | 178 | rc = ipc_data_read_start(vfs_phone, (void *)buf, nbyte); |
| 179 | if (rc != EOK) { |
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| 2671 | jermar | 180 | async_wait_for(req, NULL); |
| 181 | async_serialize_end(); |
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| 182 | futex_up(&vfs_phone_futex); |
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| 183 | return (ssize_t) rc; |
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| 184 | } |
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| 185 | async_wait_for(req, &rc); |
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| 186 | async_serialize_end(); |
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| 187 | futex_up(&vfs_phone_futex); |
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| 2710 | jermar | 188 | if (rc == EOK) |
| 189 | return (ssize_t) IPC_GET_ARG1(answer); |
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| 190 | else |
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| 191 | return -1; |
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| 2671 | jermar | 192 | } |
| 193 | |||
| 2674 | jermar | 194 | ssize_t write(int fildes, const void *buf, size_t nbyte) |
| 195 | { |
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| 196 | int res; |
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| 197 | ipcarg_t rc; |
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| 198 | ipc_call_t answer; |
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| 199 | aid_t req; |
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| 200 | |||
| 201 | futex_down(&vfs_phone_futex); |
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| 202 | async_serialize_start(); |
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| 203 | if (vfs_phone < 0) { |
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| 204 | res = vfs_connect(); |
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| 205 | if (res < 0) { |
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| 206 | async_serialize_end(); |
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| 207 | futex_up(&vfs_phone_futex); |
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| 208 | return res; |
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| 209 | } |
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| 210 | } |
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| 211 | req = async_send_1(vfs_phone, VFS_WRITE, fildes, &answer); |
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| 2741 | jermar | 212 | rc = ipc_data_write_start(vfs_phone, (void *)buf, nbyte); |
| 213 | if (rc != EOK) { |
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| 2674 | jermar | 214 | async_wait_for(req, NULL); |
| 215 | async_serialize_end(); |
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| 216 | futex_up(&vfs_phone_futex); |
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| 217 | return (ssize_t) rc; |
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| 218 | } |
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| 219 | async_wait_for(req, &rc); |
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| 220 | async_serialize_end(); |
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| 221 | futex_up(&vfs_phone_futex); |
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| 2710 | jermar | 222 | if (rc == EOK) |
| 223 | return (ssize_t) IPC_GET_ARG1(answer); |
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| 224 | else |
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| 225 | return -1; |
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| 2674 | jermar | 226 | } |
| 2684 | jermar | 227 | |
| 228 | off_t lseek(int fildes, off_t offset, int whence) |
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| 229 | { |
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| 230 | int res; |
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| 231 | ipcarg_t rc; |
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| 232 | |||
| 233 | futex_down(&vfs_phone_futex); |
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| 234 | async_serialize_start(); |
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| 235 | if (vfs_phone < 0) { |
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| 236 | res = vfs_connect(); |
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| 237 | if (res < 0) { |
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| 238 | async_serialize_end(); |
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| 239 | futex_up(&vfs_phone_futex); |
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| 240 | return res; |
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| 241 | } |
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| 242 | } |
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| 243 | |||
| 244 | off_t newoffs; |
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| 245 | rc = async_req_3_1(vfs_phone, VFS_SEEK, fildes, offset, whence, |
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| 2707 | jermar | 246 | (ipcarg_t)&newoffs); |
| 2684 | jermar | 247 | |
| 248 | async_serialize_end(); |
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| 249 | futex_up(&vfs_phone_futex); |
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| 250 | |||
| 251 | if (rc != EOK) |
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| 252 | return (off_t) -1; |
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| 253 | |||
| 254 | return newoffs; |
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| 255 | } |
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| 256 | |||
| 2693 | jermar | 257 | int ftruncate(int fildes, off_t length) |
| 258 | { |
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| 259 | int res; |
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| 260 | ipcarg_t rc; |
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| 261 | |||
| 262 | futex_down(&vfs_phone_futex); |
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| 263 | async_serialize_start(); |
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| 264 | if (vfs_phone < 0) { |
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| 265 | res = vfs_connect(); |
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| 266 | if (res < 0) { |
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| 267 | async_serialize_end(); |
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| 268 | futex_up(&vfs_phone_futex); |
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| 269 | return res; |
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| 270 | } |
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| 271 | } |
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| 272 | rc = async_req_2_0(vfs_phone, VFS_TRUNCATE, fildes, length); |
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| 273 | async_serialize_end(); |
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| 274 | futex_up(&vfs_phone_futex); |
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| 275 | return (int) rc; |
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| 276 | } |
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| 277 | |||
| 2694 | jermar | 278 | DIR *opendir(const char *dirname) |
| 279 | { |
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| 280 | DIR *dirp = malloc(sizeof(DIR)); |
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| 281 | if (!dirp) |
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| 282 | return NULL; |
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| 2700 | jermar | 283 | dirp->fd = _open(dirname, L_DIRECTORY, 0); |
| 2699 | jermar | 284 | if (dirp->fd < 0) { |
| 2694 | jermar | 285 | free(dirp); |
| 286 | return NULL; |
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| 287 | } |
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| 288 | return dirp; |
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| 289 | } |
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| 290 | |||
| 291 | struct dirent *readdir(DIR *dirp) |
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| 292 | { |
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| 2699 | jermar | 293 | ssize_t len = read(dirp->fd, &dirp->res.d_name[0], NAME_MAX + 1); |
| 294 | if (len <= 0) |
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| 295 | return NULL; |
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| 296 | return &dirp->res; |
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| 2694 | jermar | 297 | } |
| 298 | |||
| 299 | void rewinddir(DIR *dirp) |
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| 300 | { |
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| 2699 | jermar | 301 | (void) lseek(dirp->fd, 0, SEEK_SET); |
| 2694 | jermar | 302 | } |
| 303 | |||
| 304 | int closedir(DIR *dirp) |
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| 305 | { |
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| 306 | (void) close(dirp->fd); |
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| 307 | free(dirp); |
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| 308 | return 0; |
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| 309 | } |
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| 310 | |||
| 2707 | jermar | 311 | int mkdir(const char *path, mode_t mode) |
| 2694 | jermar | 312 | { |
| 2707 | jermar | 313 | int res; |
| 314 | ipcarg_t rc; |
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| 315 | aid_t req; |
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| 316 | |||
| 317 | futex_down(&vfs_phone_futex); |
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| 318 | async_serialize_start(); |
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| 319 | if (vfs_phone < 0) { |
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| 320 | res = vfs_connect(); |
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| 321 | if (res < 0) { |
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| 322 | async_serialize_end(); |
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| 323 | futex_up(&vfs_phone_futex); |
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| 324 | return res; |
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| 325 | } |
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| 326 | } |
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| 2735 | jermar | 327 | req = async_send_1(vfs_phone, VFS_MKDIR, mode, NULL); |
| 2707 | jermar | 328 | rc = ipc_data_write_start(vfs_phone, path, strlen(path)); |
| 329 | if (rc != EOK) { |
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| 330 | async_wait_for(req, NULL); |
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| 331 | async_serialize_end(); |
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| 332 | futex_up(&vfs_phone_futex); |
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| 333 | return (int) rc; |
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| 334 | } |
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| 335 | async_wait_for(req, &rc); |
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| 336 | async_serialize_end(); |
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| 337 | futex_up(&vfs_phone_futex); |
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| 338 | return EOK; |
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| 2694 | jermar | 339 | } |
| 340 | |||
| 2735 | jermar | 341 | static int _unlink(const char *path, int lflag) |
| 342 | { |
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| 343 | int res; |
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| 344 | ipcarg_t rc; |
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| 345 | aid_t req; |
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| 346 | |||
| 347 | futex_down(&vfs_phone_futex); |
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| 348 | async_serialize_start(); |
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| 349 | if (vfs_phone < 0) { |
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| 350 | res = vfs_connect(); |
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| 351 | if (res < 0) { |
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| 352 | async_serialize_end(); |
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| 353 | futex_up(&vfs_phone_futex); |
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| 354 | return res; |
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| 355 | } |
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| 356 | } |
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| 357 | req = async_send_0(vfs_phone, VFS_UNLINK, NULL); |
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| 358 | rc = ipc_data_write_start(vfs_phone, path, strlen(path)); |
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| 359 | if (rc != EOK) { |
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| 360 | async_wait_for(req, NULL); |
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| 361 | async_serialize_end(); |
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| 362 | futex_up(&vfs_phone_futex); |
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| 363 | return (int) rc; |
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| 364 | } |
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| 365 | async_wait_for(req, &rc); |
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| 366 | async_serialize_end(); |
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| 367 | futex_up(&vfs_phone_futex); |
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| 368 | return EOK; |
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| 369 | } |
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| 370 | |||
| 371 | int unlink(const char *path) |
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| 372 | { |
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| 373 | return _unlink(path, L_NONE); |
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| 374 | } |
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| 375 | |||
| 376 | int rmdir(const char *path) |
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| 377 | { |
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| 378 | return _unlink(path, L_DIRECTORY); |
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| 379 | } |
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| 380 | |||
| 2671 | jermar | 381 | /** @} |
| 382 | */ |