ths | 223d467 | 2007-12-15 17:28:36 +0000 | [diff] [blame] | 1 | /* |
| 2 | * Block driver for RAW files (win32) |
| 3 | * |
| 4 | * Copyright (c) 2006 Fabrice Bellard |
| 5 | * |
| 6 | * Permission is hereby granted, free of charge, to any person obtaining a copy |
| 7 | * of this software and associated documentation files (the "Software"), to deal |
| 8 | * in the Software without restriction, including without limitation the rights |
| 9 | * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell |
| 10 | * copies of the Software, and to permit persons to whom the Software is |
| 11 | * furnished to do so, subject to the following conditions: |
| 12 | * |
| 13 | * The above copyright notice and this permission notice shall be included in |
| 14 | * all copies or substantial portions of the Software. |
| 15 | * |
| 16 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| 17 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| 18 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL |
| 19 | * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
| 20 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
| 21 | * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN |
| 22 | * THE SOFTWARE. |
| 23 | */ |
Markus Armbruster | 922a01a | 2018-02-01 12:18:46 +0100 | [diff] [blame] | 24 | |
Peter Maydell | 80c71a2 | 2016-01-18 18:01:42 +0000 | [diff] [blame] | 25 | #include "qemu/osdep.h" |
Markus Armbruster | da34e65 | 2016-03-14 09:01:28 +0100 | [diff] [blame] | 26 | #include "qapi/error.h" |
Veronia Bahaa | f348b6d | 2016-03-20 19:16:19 +0200 | [diff] [blame] | 27 | #include "qemu/cutils.h" |
Paolo Bonzini | 737e150 | 2012-12-17 18:19:44 +0100 | [diff] [blame] | 28 | #include "block/block_int.h" |
Paolo Bonzini | 1de7afc | 2012-12-17 18:20:00 +0100 | [diff] [blame] | 29 | #include "qemu/module.h" |
Markus Armbruster | 922a01a | 2018-02-01 12:18:46 +0100 | [diff] [blame] | 30 | #include "qemu/option.h" |
Paolo Bonzini | 0187f5c | 2016-07-04 18:33:20 +0200 | [diff] [blame] | 31 | #include "block/raw-aio.h" |
Paolo Bonzini | fc4edb8 | 2012-06-09 04:48:28 +0200 | [diff] [blame] | 32 | #include "trace.h" |
Paolo Bonzini | 737e150 | 2012-12-17 18:19:44 +0100 | [diff] [blame] | 33 | #include "block/thread-pool.h" |
Paolo Bonzini | 1de7afc | 2012-12-17 18:20:00 +0100 | [diff] [blame] | 34 | #include "qemu/iov.h" |
Markus Armbruster | 452fcdb | 2018-02-01 12:18:39 +0100 | [diff] [blame] | 35 | #include "qapi/qmp/qdict.h" |
Markus Armbruster | d49b683 | 2015-03-17 18:29:20 +0100 | [diff] [blame] | 36 | #include "qapi/qmp/qstring.h" |
aliguori | 49dc768 | 2009-03-08 16:26:59 +0000 | [diff] [blame] | 37 | #include <windows.h> |
ths | 223d467 | 2007-12-15 17:28:36 +0000 | [diff] [blame] | 38 | #include <winioctl.h> |
| 39 | |
| 40 | #define FTYPE_FILE 0 |
| 41 | #define FTYPE_CD 1 |
| 42 | #define FTYPE_HARDDISK 2 |
| 43 | |
Paolo Bonzini | fc4edb8 | 2012-06-09 04:48:28 +0200 | [diff] [blame] | 44 | typedef struct RawWin32AIOData { |
| 45 | BlockDriverState *bs; |
| 46 | HANDLE hfile; |
| 47 | struct iovec *aio_iov; |
| 48 | int aio_niov; |
| 49 | size_t aio_nbytes; |
| 50 | off64_t aio_offset; |
| 51 | int aio_type; |
| 52 | } RawWin32AIOData; |
| 53 | |
ths | 223d467 | 2007-12-15 17:28:36 +0000 | [diff] [blame] | 54 | typedef struct BDRVRawState { |
| 55 | HANDLE hfile; |
| 56 | int type; |
| 57 | char drive_path[16]; /* format: "d:\" */ |
Paolo Bonzini | a273652 | 2012-10-26 11:43:58 +0200 | [diff] [blame] | 58 | QEMUWin32AIOState *aio; |
ths | 223d467 | 2007-12-15 17:28:36 +0000 | [diff] [blame] | 59 | } BDRVRawState; |
| 60 | |
Paolo Bonzini | fc4edb8 | 2012-06-09 04:48:28 +0200 | [diff] [blame] | 61 | /* |
| 62 | * Read/writes the data to/from a given linear buffer. |
| 63 | * |
| 64 | * Returns the number of bytes handles or -errno in case of an error. Short |
| 65 | * reads are only returned if the end of the file is reached. |
| 66 | */ |
| 67 | static size_t handle_aiocb_rw(RawWin32AIOData *aiocb) |
| 68 | { |
| 69 | size_t offset = 0; |
| 70 | int i; |
| 71 | |
| 72 | for (i = 0; i < aiocb->aio_niov; i++) { |
| 73 | OVERLAPPED ov; |
| 74 | DWORD ret, ret_count, len; |
| 75 | |
| 76 | memset(&ov, 0, sizeof(ov)); |
| 77 | ov.Offset = (aiocb->aio_offset + offset); |
| 78 | ov.OffsetHigh = (aiocb->aio_offset + offset) >> 32; |
| 79 | len = aiocb->aio_iov[i].iov_len; |
| 80 | if (aiocb->aio_type & QEMU_AIO_WRITE) { |
| 81 | ret = WriteFile(aiocb->hfile, aiocb->aio_iov[i].iov_base, |
| 82 | len, &ret_count, &ov); |
| 83 | } else { |
| 84 | ret = ReadFile(aiocb->hfile, aiocb->aio_iov[i].iov_base, |
| 85 | len, &ret_count, &ov); |
| 86 | } |
| 87 | if (!ret) { |
| 88 | ret_count = 0; |
| 89 | } |
| 90 | if (ret_count != len) { |
Tal Kain | 56e023a | 2013-09-09 11:14:55 +0200 | [diff] [blame] | 91 | offset += ret_count; |
Paolo Bonzini | fc4edb8 | 2012-06-09 04:48:28 +0200 | [diff] [blame] | 92 | break; |
| 93 | } |
| 94 | offset += len; |
| 95 | } |
| 96 | |
| 97 | return offset; |
| 98 | } |
| 99 | |
| 100 | static int aio_worker(void *arg) |
| 101 | { |
| 102 | RawWin32AIOData *aiocb = arg; |
| 103 | ssize_t ret = 0; |
| 104 | size_t count; |
| 105 | |
| 106 | switch (aiocb->aio_type & QEMU_AIO_TYPE_MASK) { |
| 107 | case QEMU_AIO_READ: |
| 108 | count = handle_aiocb_rw(aiocb); |
Max Reitz | c0191e7 | 2015-02-05 13:58:24 -0500 | [diff] [blame] | 109 | if (count < aiocb->aio_nbytes) { |
Paolo Bonzini | fc4edb8 | 2012-06-09 04:48:28 +0200 | [diff] [blame] | 110 | /* A short read means that we have reached EOF. Pad the buffer |
| 111 | * with zeros for bytes after EOF. */ |
| 112 | iov_memset(aiocb->aio_iov, aiocb->aio_niov, count, |
| 113 | 0, aiocb->aio_nbytes - count); |
| 114 | |
| 115 | count = aiocb->aio_nbytes; |
| 116 | } |
| 117 | if (count == aiocb->aio_nbytes) { |
| 118 | ret = 0; |
| 119 | } else { |
| 120 | ret = -EINVAL; |
| 121 | } |
| 122 | break; |
| 123 | case QEMU_AIO_WRITE: |
| 124 | count = handle_aiocb_rw(aiocb); |
| 125 | if (count == aiocb->aio_nbytes) { |
Kevin Wolf | 5d55503 | 2015-09-23 14:58:21 +0200 | [diff] [blame] | 126 | ret = 0; |
Paolo Bonzini | fc4edb8 | 2012-06-09 04:48:28 +0200 | [diff] [blame] | 127 | } else { |
Kevin Wolf | 5d55503 | 2015-09-23 14:58:21 +0200 | [diff] [blame] | 128 | ret = -EINVAL; |
Paolo Bonzini | fc4edb8 | 2012-06-09 04:48:28 +0200 | [diff] [blame] | 129 | } |
| 130 | break; |
| 131 | case QEMU_AIO_FLUSH: |
| 132 | if (!FlushFileBuffers(aiocb->hfile)) { |
| 133 | return -EIO; |
| 134 | } |
| 135 | break; |
| 136 | default: |
| 137 | fprintf(stderr, "invalid aio request (0x%x)\n", aiocb->aio_type); |
| 138 | ret = -EINVAL; |
| 139 | break; |
| 140 | } |
| 141 | |
Paolo Bonzini | c84b319 | 2015-10-01 13:04:39 +0200 | [diff] [blame] | 142 | g_free(aiocb); |
Paolo Bonzini | fc4edb8 | 2012-06-09 04:48:28 +0200 | [diff] [blame] | 143 | return ret; |
| 144 | } |
| 145 | |
Markus Armbruster | 7c84b1b | 2014-10-07 13:59:14 +0200 | [diff] [blame] | 146 | static BlockAIOCB *paio_submit(BlockDriverState *bs, HANDLE hfile, |
Eric Blake | 36e3b2e | 2016-07-15 17:22:55 -0600 | [diff] [blame] | 147 | int64_t offset, QEMUIOVector *qiov, int count, |
Markus Armbruster | 097310b | 2014-10-07 13:59:15 +0200 | [diff] [blame] | 148 | BlockCompletionFunc *cb, void *opaque, int type) |
Paolo Bonzini | fc4edb8 | 2012-06-09 04:48:28 +0200 | [diff] [blame] | 149 | { |
Paolo Bonzini | c84b319 | 2015-10-01 13:04:39 +0200 | [diff] [blame] | 150 | RawWin32AIOData *acb = g_new(RawWin32AIOData, 1); |
Stefan Hajnoczi | c4d9d19 | 2013-03-07 13:41:49 +0100 | [diff] [blame] | 151 | ThreadPool *pool; |
Paolo Bonzini | fc4edb8 | 2012-06-09 04:48:28 +0200 | [diff] [blame] | 152 | |
| 153 | acb->bs = bs; |
| 154 | acb->hfile = hfile; |
| 155 | acb->aio_type = type; |
| 156 | |
| 157 | if (qiov) { |
| 158 | acb->aio_iov = qiov->iov; |
| 159 | acb->aio_niov = qiov->niov; |
Eric Blake | 36e3b2e | 2016-07-15 17:22:55 -0600 | [diff] [blame] | 160 | assert(qiov->size == count); |
Paolo Bonzini | fc4edb8 | 2012-06-09 04:48:28 +0200 | [diff] [blame] | 161 | } |
Eric Blake | 36e3b2e | 2016-07-15 17:22:55 -0600 | [diff] [blame] | 162 | acb->aio_nbytes = count; |
| 163 | acb->aio_offset = offset; |
Paolo Bonzini | fc4edb8 | 2012-06-09 04:48:28 +0200 | [diff] [blame] | 164 | |
Fam Zheng | f8a3087 | 2018-07-10 14:31:15 +0800 | [diff] [blame] | 165 | trace_file_paio_submit(acb, opaque, offset, count, type); |
Stefan Hajnoczi | c4d9d19 | 2013-03-07 13:41:49 +0100 | [diff] [blame] | 166 | pool = aio_get_thread_pool(bdrv_get_aio_context(bs)); |
| 167 | return thread_pool_submit_aio(pool, aio_worker, acb, cb, opaque); |
Paolo Bonzini | fc4edb8 | 2012-06-09 04:48:28 +0200 | [diff] [blame] | 168 | } |
| 169 | |
ths | 223d467 | 2007-12-15 17:28:36 +0000 | [diff] [blame] | 170 | int qemu_ftruncate64(int fd, int64_t length) |
| 171 | { |
| 172 | LARGE_INTEGER li; |
Stefan Weil | 2c993ec | 2011-08-20 12:10:05 +0200 | [diff] [blame] | 173 | DWORD dw; |
ths | 223d467 | 2007-12-15 17:28:36 +0000 | [diff] [blame] | 174 | LONG high; |
| 175 | HANDLE h; |
| 176 | BOOL res; |
| 177 | |
| 178 | if ((GetVersion() & 0x80000000UL) && (length >> 32) != 0) |
Paolo Bonzini | 7d37435 | 2018-12-13 23:37:37 +0100 | [diff] [blame] | 179 | return -1; |
ths | 223d467 | 2007-12-15 17:28:36 +0000 | [diff] [blame] | 180 | |
| 181 | h = (HANDLE)_get_osfhandle(fd); |
| 182 | |
| 183 | /* get current position, ftruncate do not change position */ |
| 184 | li.HighPart = 0; |
| 185 | li.LowPart = SetFilePointer (h, 0, &li.HighPart, FILE_CURRENT); |
Stefan Weil | 2c993ec | 2011-08-20 12:10:05 +0200 | [diff] [blame] | 186 | if (li.LowPart == INVALID_SET_FILE_POINTER && GetLastError() != NO_ERROR) { |
Paolo Bonzini | 7d37435 | 2018-12-13 23:37:37 +0100 | [diff] [blame] | 187 | return -1; |
Stefan Weil | 2c993ec | 2011-08-20 12:10:05 +0200 | [diff] [blame] | 188 | } |
ths | 223d467 | 2007-12-15 17:28:36 +0000 | [diff] [blame] | 189 | |
| 190 | high = length >> 32; |
Stefan Weil | 2c993ec | 2011-08-20 12:10:05 +0200 | [diff] [blame] | 191 | dw = SetFilePointer(h, (DWORD) length, &high, FILE_BEGIN); |
| 192 | if (dw == INVALID_SET_FILE_POINTER && GetLastError() != NO_ERROR) { |
Paolo Bonzini | 7d37435 | 2018-12-13 23:37:37 +0100 | [diff] [blame] | 193 | return -1; |
Stefan Weil | 2c993ec | 2011-08-20 12:10:05 +0200 | [diff] [blame] | 194 | } |
ths | 223d467 | 2007-12-15 17:28:36 +0000 | [diff] [blame] | 195 | res = SetEndOfFile(h); |
| 196 | |
| 197 | /* back to old position */ |
| 198 | SetFilePointer(h, li.LowPart, &li.HighPart, FILE_BEGIN); |
| 199 | return res ? 0 : -1; |
| 200 | } |
| 201 | |
| 202 | static int set_sparse(int fd) |
| 203 | { |
| 204 | DWORD returned; |
| 205 | return (int) DeviceIoControl((HANDLE)_get_osfhandle(fd), FSCTL_SET_SPARSE, |
Paolo Bonzini | 7d37435 | 2018-12-13 23:37:37 +0100 | [diff] [blame] | 206 | NULL, 0, NULL, 0, &returned, NULL); |
ths | 223d467 | 2007-12-15 17:28:36 +0000 | [diff] [blame] | 207 | } |
| 208 | |
Stefan Hajnoczi | 85ebd38 | 2014-05-08 16:34:50 +0200 | [diff] [blame] | 209 | static void raw_detach_aio_context(BlockDriverState *bs) |
| 210 | { |
| 211 | BDRVRawState *s = bs->opaque; |
| 212 | |
| 213 | if (s->aio) { |
| 214 | win32_aio_detach_aio_context(s->aio, bdrv_get_aio_context(bs)); |
| 215 | } |
| 216 | } |
| 217 | |
| 218 | static void raw_attach_aio_context(BlockDriverState *bs, |
| 219 | AioContext *new_context) |
| 220 | { |
| 221 | BDRVRawState *s = bs->opaque; |
| 222 | |
| 223 | if (s->aio) { |
| 224 | win32_aio_attach_aio_context(s->aio, new_context); |
| 225 | } |
| 226 | } |
| 227 | |
Eric Blake | 2914a1d | 2016-06-23 16:37:16 -0600 | [diff] [blame] | 228 | static void raw_probe_alignment(BlockDriverState *bs, Error **errp) |
Paolo Bonzini | c25f53b | 2011-11-29 12:42:20 +0100 | [diff] [blame] | 229 | { |
| 230 | BDRVRawState *s = bs->opaque; |
| 231 | DWORD sectorsPerCluster, freeClusters, totalClusters, count; |
| 232 | DISK_GEOMETRY_EX dg; |
| 233 | BOOL status; |
| 234 | |
| 235 | if (s->type == FTYPE_CD) { |
Eric Blake | a5b8dd2 | 2016-06-23 16:37:24 -0600 | [diff] [blame] | 236 | bs->bl.request_alignment = 2048; |
Paolo Bonzini | c25f53b | 2011-11-29 12:42:20 +0100 | [diff] [blame] | 237 | return; |
| 238 | } |
| 239 | if (s->type == FTYPE_HARDDISK) { |
| 240 | status = DeviceIoControl(s->hfile, IOCTL_DISK_GET_DRIVE_GEOMETRY_EX, |
| 241 | NULL, 0, &dg, sizeof(dg), &count, NULL); |
| 242 | if (status != 0) { |
Eric Blake | a5b8dd2 | 2016-06-23 16:37:24 -0600 | [diff] [blame] | 243 | bs->bl.request_alignment = dg.Geometry.BytesPerSector; |
Paolo Bonzini | c25f53b | 2011-11-29 12:42:20 +0100 | [diff] [blame] | 244 | return; |
| 245 | } |
| 246 | /* try GetDiskFreeSpace too */ |
| 247 | } |
| 248 | |
| 249 | if (s->drive_path[0]) { |
| 250 | GetDiskFreeSpace(s->drive_path, §orsPerCluster, |
| 251 | &dg.Geometry.BytesPerSector, |
| 252 | &freeClusters, &totalClusters); |
Eric Blake | a5b8dd2 | 2016-06-23 16:37:24 -0600 | [diff] [blame] | 253 | bs->bl.request_alignment = dg.Geometry.BytesPerSector; |
Eric Blake | de7056a | 2018-04-24 14:25:02 -0500 | [diff] [blame] | 254 | return; |
Paolo Bonzini | c25f53b | 2011-11-29 12:42:20 +0100 | [diff] [blame] | 255 | } |
Eric Blake | de7056a | 2018-04-24 14:25:02 -0500 | [diff] [blame] | 256 | |
| 257 | /* XXX Does Windows support AIO on less than 512-byte alignment? */ |
| 258 | bs->bl.request_alignment = 512; |
Paolo Bonzini | c25f53b | 2011-11-29 12:42:20 +0100 | [diff] [blame] | 259 | } |
| 260 | |
Kevin Wolf | 0a4279d | 2016-09-08 15:09:01 +0200 | [diff] [blame] | 261 | static void raw_parse_flags(int flags, bool use_aio, int *access_flags, |
| 262 | DWORD *overlapped) |
Jeff Cody | 6a8dc04 | 2012-09-20 15:13:21 -0400 | [diff] [blame] | 263 | { |
| 264 | assert(access_flags != NULL); |
| 265 | assert(overlapped != NULL); |
| 266 | |
| 267 | if (flags & BDRV_O_RDWR) { |
| 268 | *access_flags = GENERIC_READ | GENERIC_WRITE; |
| 269 | } else { |
| 270 | *access_flags = GENERIC_READ; |
| 271 | } |
| 272 | |
| 273 | *overlapped = FILE_ATTRIBUTE_NORMAL; |
Kevin Wolf | 0a4279d | 2016-09-08 15:09:01 +0200 | [diff] [blame] | 274 | if (use_aio) { |
Paolo Bonzini | a273652 | 2012-10-26 11:43:58 +0200 | [diff] [blame] | 275 | *overlapped |= FILE_FLAG_OVERLAPPED; |
| 276 | } |
Jeff Cody | 6a8dc04 | 2012-09-20 15:13:21 -0400 | [diff] [blame] | 277 | if (flags & BDRV_O_NOCACHE) { |
| 278 | *overlapped |= FILE_FLAG_NO_BUFFERING; |
| 279 | } |
Jeff Cody | 6a8dc04 | 2012-09-20 15:13:21 -0400 | [diff] [blame] | 280 | } |
| 281 | |
Max Reitz | 7dc74db | 2014-03-05 22:41:39 +0100 | [diff] [blame] | 282 | static void raw_parse_filename(const char *filename, QDict *options, |
| 283 | Error **errp) |
| 284 | { |
Max Reitz | 03c320d | 2017-05-22 21:52:16 +0200 | [diff] [blame] | 285 | bdrv_parse_filename_strip_prefix(filename, "file:", options); |
Max Reitz | 7dc74db | 2014-03-05 22:41:39 +0100 | [diff] [blame] | 286 | } |
| 287 | |
Kevin Wolf | 8a79380 | 2013-04-10 11:34:56 +0200 | [diff] [blame] | 288 | static QemuOptsList raw_runtime_opts = { |
| 289 | .name = "raw", |
| 290 | .head = QTAILQ_HEAD_INITIALIZER(raw_runtime_opts.head), |
| 291 | .desc = { |
| 292 | { |
| 293 | .name = "filename", |
| 294 | .type = QEMU_OPT_STRING, |
| 295 | .help = "File name of the image", |
| 296 | }, |
Kevin Wolf | 0a4279d | 2016-09-08 15:09:01 +0200 | [diff] [blame] | 297 | { |
| 298 | .name = "aio", |
| 299 | .type = QEMU_OPT_STRING, |
| 300 | .help = "host AIO implementation (threads, native)", |
| 301 | }, |
Kevin Wolf | 8a79380 | 2013-04-10 11:34:56 +0200 | [diff] [blame] | 302 | { /* end of list */ } |
| 303 | }, |
| 304 | }; |
| 305 | |
Kevin Wolf | 0a4279d | 2016-09-08 15:09:01 +0200 | [diff] [blame] | 306 | static bool get_aio_option(QemuOpts *opts, int flags, Error **errp) |
| 307 | { |
| 308 | BlockdevAioOptions aio, aio_default; |
| 309 | |
| 310 | aio_default = (flags & BDRV_O_NATIVE_AIO) ? BLOCKDEV_AIO_OPTIONS_NATIVE |
| 311 | : BLOCKDEV_AIO_OPTIONS_THREADS; |
Marc-AndrƩ Lureau | f7abe0e | 2017-08-24 10:46:10 +0200 | [diff] [blame] | 312 | aio = qapi_enum_parse(&BlockdevAioOptions_lookup, qemu_opt_get(opts, "aio"), |
Markus Armbruster | 06c60b6 | 2017-08-24 10:45:57 +0200 | [diff] [blame] | 313 | aio_default, errp); |
Kevin Wolf | 0a4279d | 2016-09-08 15:09:01 +0200 | [diff] [blame] | 314 | |
| 315 | switch (aio) { |
| 316 | case BLOCKDEV_AIO_OPTIONS_NATIVE: |
| 317 | return true; |
| 318 | case BLOCKDEV_AIO_OPTIONS_THREADS: |
| 319 | return false; |
| 320 | default: |
| 321 | error_setg(errp, "Invalid AIO option"); |
| 322 | } |
| 323 | return false; |
| 324 | } |
| 325 | |
Max Reitz | 015a103 | 2013-09-05 14:22:29 +0200 | [diff] [blame] | 326 | static int raw_open(BlockDriverState *bs, QDict *options, int flags, |
| 327 | Error **errp) |
ths | 223d467 | 2007-12-15 17:28:36 +0000 | [diff] [blame] | 328 | { |
| 329 | BDRVRawState *s = bs->opaque; |
Christoph Hellwig | 9a2d77a | 2010-01-20 18:13:42 +0100 | [diff] [blame] | 330 | int access_flags; |
ths | 223d467 | 2007-12-15 17:28:36 +0000 | [diff] [blame] | 331 | DWORD overlapped; |
Kevin Wolf | 8a79380 | 2013-04-10 11:34:56 +0200 | [diff] [blame] | 332 | QemuOpts *opts; |
| 333 | Error *local_err = NULL; |
| 334 | const char *filename; |
Kevin Wolf | 0a4279d | 2016-09-08 15:09:01 +0200 | [diff] [blame] | 335 | bool use_aio; |
Kevin Wolf | 8a79380 | 2013-04-10 11:34:56 +0200 | [diff] [blame] | 336 | int ret; |
ths | 223d467 | 2007-12-15 17:28:36 +0000 | [diff] [blame] | 337 | |
| 338 | s->type = FTYPE_FILE; |
| 339 | |
Peter Crosthwaite | 87ea75d | 2014-01-01 18:49:17 -0800 | [diff] [blame] | 340 | opts = qemu_opts_create(&raw_runtime_opts, NULL, 0, &error_abort); |
Kevin Wolf | 8a79380 | 2013-04-10 11:34:56 +0200 | [diff] [blame] | 341 | qemu_opts_absorb_qdict(opts, options, &local_err); |
Markus Armbruster | 84d18f0 | 2014-01-30 15:07:28 +0100 | [diff] [blame] | 342 | if (local_err) { |
Max Reitz | c6252b7 | 2013-10-10 15:44:02 +0200 | [diff] [blame] | 343 | error_propagate(errp, local_err); |
Kevin Wolf | 8a79380 | 2013-04-10 11:34:56 +0200 | [diff] [blame] | 344 | ret = -EINVAL; |
| 345 | goto fail; |
| 346 | } |
| 347 | |
Fam Zheng | 1c3a555 | 2017-05-03 00:35:51 +0800 | [diff] [blame] | 348 | if (qdict_get_try_bool(options, "locking", false)) { |
| 349 | error_setg(errp, "locking=on is not supported on Windows"); |
Gerd Hoffmann | cdece04 | 2017-05-16 09:42:55 +0200 | [diff] [blame] | 350 | ret = -EINVAL; |
Fam Zheng | 1c3a555 | 2017-05-03 00:35:51 +0800 | [diff] [blame] | 351 | goto fail; |
| 352 | } |
| 353 | |
Kevin Wolf | 8a79380 | 2013-04-10 11:34:56 +0200 | [diff] [blame] | 354 | filename = qemu_opt_get(opts, "filename"); |
| 355 | |
Kevin Wolf | 0a4279d | 2016-09-08 15:09:01 +0200 | [diff] [blame] | 356 | use_aio = get_aio_option(opts, flags, &local_err); |
| 357 | if (local_err) { |
| 358 | error_propagate(errp, local_err); |
| 359 | ret = -EINVAL; |
| 360 | goto fail; |
| 361 | } |
| 362 | |
| 363 | raw_parse_flags(flags, use_aio, &access_flags, &overlapped); |
Kevin Wolf | 8a79380 | 2013-04-10 11:34:56 +0200 | [diff] [blame] | 364 | |
Paolo Bonzini | c25f53b | 2011-11-29 12:42:20 +0100 | [diff] [blame] | 365 | if (filename[0] && filename[1] == ':') { |
| 366 | snprintf(s->drive_path, sizeof(s->drive_path), "%c:\\", filename[0]); |
| 367 | } else if (filename[0] == '\\' && filename[1] == '\\') { |
| 368 | s->drive_path[0] = 0; |
| 369 | } else { |
| 370 | /* Relative path. */ |
| 371 | char buf[MAX_PATH]; |
| 372 | GetCurrentDirectory(MAX_PATH, buf); |
| 373 | snprintf(s->drive_path, sizeof(s->drive_path), "%c:\\", buf[0]); |
| 374 | } |
| 375 | |
ths | 223d467 | 2007-12-15 17:28:36 +0000 | [diff] [blame] | 376 | s->hfile = CreateFile(filename, access_flags, |
| 377 | FILE_SHARE_READ, NULL, |
Christoph Hellwig | 9a2d77a | 2010-01-20 18:13:42 +0100 | [diff] [blame] | 378 | OPEN_EXISTING, overlapped, NULL); |
ths | 223d467 | 2007-12-15 17:28:36 +0000 | [diff] [blame] | 379 | if (s->hfile == INVALID_HANDLE_VALUE) { |
| 380 | int err = GetLastError(); |
| 381 | |
Halil Pasic | 0923775 | 2016-10-11 16:12:35 +0200 | [diff] [blame] | 382 | error_setg_win32(errp, err, "Could not open '%s'", filename); |
Kevin Wolf | 8a79380 | 2013-04-10 11:34:56 +0200 | [diff] [blame] | 383 | if (err == ERROR_ACCESS_DENIED) { |
| 384 | ret = -EACCES; |
| 385 | } else { |
| 386 | ret = -EINVAL; |
| 387 | } |
| 388 | goto fail; |
Paolo Bonzini | a273652 | 2012-10-26 11:43:58 +0200 | [diff] [blame] | 389 | } |
| 390 | |
Kevin Wolf | 0a4279d | 2016-09-08 15:09:01 +0200 | [diff] [blame] | 391 | if (use_aio) { |
Stefan Hajnoczi | 99cc598 | 2014-05-08 16:34:49 +0200 | [diff] [blame] | 392 | s->aio = win32_aio_init(); |
| 393 | if (s->aio == NULL) { |
| 394 | CloseHandle(s->hfile); |
| 395 | error_setg(errp, "Could not initialize AIO"); |
| 396 | ret = -EINVAL; |
| 397 | goto fail; |
| 398 | } |
| 399 | |
| 400 | ret = win32_aio_attach(s->aio, s->hfile); |
Paolo Bonzini | a273652 | 2012-10-26 11:43:58 +0200 | [diff] [blame] | 401 | if (ret < 0) { |
Stefan Hajnoczi | 99cc598 | 2014-05-08 16:34:49 +0200 | [diff] [blame] | 402 | win32_aio_cleanup(s->aio); |
Paolo Bonzini | a273652 | 2012-10-26 11:43:58 +0200 | [diff] [blame] | 403 | CloseHandle(s->hfile); |
Max Reitz | c6252b7 | 2013-10-10 15:44:02 +0200 | [diff] [blame] | 404 | error_setg_errno(errp, -ret, "Could not enable AIO"); |
Kevin Wolf | 8a79380 | 2013-04-10 11:34:56 +0200 | [diff] [blame] | 405 | goto fail; |
Paolo Bonzini | a273652 | 2012-10-26 11:43:58 +0200 | [diff] [blame] | 406 | } |
Stefan Hajnoczi | 85ebd38 | 2014-05-08 16:34:50 +0200 | [diff] [blame] | 407 | |
| 408 | win32_aio_attach_aio_context(s->aio, bdrv_get_aio_context(bs)); |
ths | 223d467 | 2007-12-15 17:28:36 +0000 | [diff] [blame] | 409 | } |
Kevin Wolf | 8a79380 | 2013-04-10 11:34:56 +0200 | [diff] [blame] | 410 | |
| 411 | ret = 0; |
| 412 | fail: |
| 413 | qemu_opts_del(opts); |
| 414 | return ret; |
ths | 223d467 | 2007-12-15 17:28:36 +0000 | [diff] [blame] | 415 | } |
| 416 | |
Eric Blake | de7056a | 2018-04-24 14:25:02 -0500 | [diff] [blame] | 417 | static BlockAIOCB *raw_aio_preadv(BlockDriverState *bs, |
| 418 | uint64_t offset, uint64_t bytes, |
| 419 | QEMUIOVector *qiov, int flags, |
| 420 | BlockCompletionFunc *cb, void *opaque) |
ths | 223d467 | 2007-12-15 17:28:36 +0000 | [diff] [blame] | 421 | { |
| 422 | BDRVRawState *s = bs->opaque; |
Paolo Bonzini | a273652 | 2012-10-26 11:43:58 +0200 | [diff] [blame] | 423 | if (s->aio) { |
Eric Blake | de7056a | 2018-04-24 14:25:02 -0500 | [diff] [blame] | 424 | return win32_aio_submit(bs, s->aio, s->hfile, offset, bytes, qiov, |
| 425 | cb, opaque, QEMU_AIO_READ); |
Paolo Bonzini | a273652 | 2012-10-26 11:43:58 +0200 | [diff] [blame] | 426 | } else { |
Eric Blake | de7056a | 2018-04-24 14:25:02 -0500 | [diff] [blame] | 427 | return paio_submit(bs, s->hfile, offset, qiov, bytes, |
Paolo Bonzini | a273652 | 2012-10-26 11:43:58 +0200 | [diff] [blame] | 428 | cb, opaque, QEMU_AIO_READ); |
| 429 | } |
ths | 223d467 | 2007-12-15 17:28:36 +0000 | [diff] [blame] | 430 | } |
| 431 | |
Eric Blake | de7056a | 2018-04-24 14:25:02 -0500 | [diff] [blame] | 432 | static BlockAIOCB *raw_aio_pwritev(BlockDriverState *bs, |
| 433 | uint64_t offset, uint64_t bytes, |
| 434 | QEMUIOVector *qiov, int flags, |
| 435 | BlockCompletionFunc *cb, void *opaque) |
ths | 223d467 | 2007-12-15 17:28:36 +0000 | [diff] [blame] | 436 | { |
| 437 | BDRVRawState *s = bs->opaque; |
Paolo Bonzini | a273652 | 2012-10-26 11:43:58 +0200 | [diff] [blame] | 438 | if (s->aio) { |
Eric Blake | de7056a | 2018-04-24 14:25:02 -0500 | [diff] [blame] | 439 | return win32_aio_submit(bs, s->aio, s->hfile, offset, bytes, qiov, |
| 440 | cb, opaque, QEMU_AIO_WRITE); |
Paolo Bonzini | a273652 | 2012-10-26 11:43:58 +0200 | [diff] [blame] | 441 | } else { |
Eric Blake | de7056a | 2018-04-24 14:25:02 -0500 | [diff] [blame] | 442 | return paio_submit(bs, s->hfile, offset, qiov, bytes, |
Paolo Bonzini | a273652 | 2012-10-26 11:43:58 +0200 | [diff] [blame] | 443 | cb, opaque, QEMU_AIO_WRITE); |
| 444 | } |
ths | 223d467 | 2007-12-15 17:28:36 +0000 | [diff] [blame] | 445 | } |
| 446 | |
Markus Armbruster | 7c84b1b | 2014-10-07 13:59:14 +0200 | [diff] [blame] | 447 | static BlockAIOCB *raw_aio_flush(BlockDriverState *bs, |
Markus Armbruster | 097310b | 2014-10-07 13:59:15 +0200 | [diff] [blame] | 448 | BlockCompletionFunc *cb, void *opaque) |
ths | 223d467 | 2007-12-15 17:28:36 +0000 | [diff] [blame] | 449 | { |
| 450 | BDRVRawState *s = bs->opaque; |
Paolo Bonzini | fc4edb8 | 2012-06-09 04:48:28 +0200 | [diff] [blame] | 451 | return paio_submit(bs, s->hfile, 0, NULL, 0, cb, opaque, QEMU_AIO_FLUSH); |
ths | 223d467 | 2007-12-15 17:28:36 +0000 | [diff] [blame] | 452 | } |
| 453 | |
| 454 | static void raw_close(BlockDriverState *bs) |
| 455 | { |
| 456 | BDRVRawState *s = bs->opaque; |
Stefan Hajnoczi | 99cc598 | 2014-05-08 16:34:49 +0200 | [diff] [blame] | 457 | |
| 458 | if (s->aio) { |
Stefan Hajnoczi | 85ebd38 | 2014-05-08 16:34:50 +0200 | [diff] [blame] | 459 | win32_aio_detach_aio_context(s->aio, bdrv_get_aio_context(bs)); |
Stefan Hajnoczi | 99cc598 | 2014-05-08 16:34:49 +0200 | [diff] [blame] | 460 | win32_aio_cleanup(s->aio); |
| 461 | s->aio = NULL; |
| 462 | } |
| 463 | |
ths | 223d467 | 2007-12-15 17:28:36 +0000 | [diff] [blame] | 464 | CloseHandle(s->hfile); |
Kevin Wolf | 8bfea15 | 2014-04-11 19:16:36 +0200 | [diff] [blame] | 465 | if (bs->open_flags & BDRV_O_TEMPORARY) { |
| 466 | unlink(bs->filename); |
| 467 | } |
ths | 223d467 | 2007-12-15 17:28:36 +0000 | [diff] [blame] | 468 | } |
| 469 | |
Kevin Wolf | 061ca8a | 2018-06-21 17:54:35 +0200 | [diff] [blame] | 470 | static int coroutine_fn raw_co_truncate(BlockDriverState *bs, int64_t offset, |
| 471 | PreallocMode prealloc, Error **errp) |
ths | 223d467 | 2007-12-15 17:28:36 +0000 | [diff] [blame] | 472 | { |
| 473 | BDRVRawState *s = bs->opaque; |
blueswir1 | b9e82a5 | 2009-04-05 18:03:31 +0000 | [diff] [blame] | 474 | LONG low, high; |
Fabien Chouteau | fbcad04 | 2012-12-10 12:56:22 +0100 | [diff] [blame] | 475 | DWORD dwPtrLow; |
ths | 223d467 | 2007-12-15 17:28:36 +0000 | [diff] [blame] | 476 | |
Max Reitz | 8243ccb | 2017-06-13 22:20:52 +0200 | [diff] [blame] | 477 | if (prealloc != PREALLOC_MODE_OFF) { |
| 478 | error_setg(errp, "Unsupported preallocation mode '%s'", |
Markus Armbruster | 977c736 | 2017-08-24 10:46:08 +0200 | [diff] [blame] | 479 | PreallocMode_str(prealloc)); |
Max Reitz | 8243ccb | 2017-06-13 22:20:52 +0200 | [diff] [blame] | 480 | return -ENOTSUP; |
| 481 | } |
| 482 | |
ths | 223d467 | 2007-12-15 17:28:36 +0000 | [diff] [blame] | 483 | low = offset; |
| 484 | high = offset >> 32; |
Fabien Chouteau | fbcad04 | 2012-12-10 12:56:22 +0100 | [diff] [blame] | 485 | |
| 486 | /* |
| 487 | * An error has occurred if the return value is INVALID_SET_FILE_POINTER |
| 488 | * and GetLastError doesn't return NO_ERROR. |
| 489 | */ |
| 490 | dwPtrLow = SetFilePointer(s->hfile, low, &high, FILE_BEGIN); |
| 491 | if (dwPtrLow == INVALID_SET_FILE_POINTER && GetLastError() != NO_ERROR) { |
Max Reitz | 4bff28b | 2017-03-28 22:51:28 +0200 | [diff] [blame] | 492 | error_setg_win32(errp, GetLastError(), "SetFilePointer error"); |
ths | 223d467 | 2007-12-15 17:28:36 +0000 | [diff] [blame] | 493 | return -EIO; |
Fabien Chouteau | fbcad04 | 2012-12-10 12:56:22 +0100 | [diff] [blame] | 494 | } |
| 495 | if (SetEndOfFile(s->hfile) == 0) { |
Max Reitz | 4bff28b | 2017-03-28 22:51:28 +0200 | [diff] [blame] | 496 | error_setg_win32(errp, GetLastError(), "SetEndOfFile error"); |
Fabien Chouteau | fbcad04 | 2012-12-10 12:56:22 +0100 | [diff] [blame] | 497 | return -EIO; |
| 498 | } |
ths | 223d467 | 2007-12-15 17:28:36 +0000 | [diff] [blame] | 499 | return 0; |
| 500 | } |
| 501 | |
| 502 | static int64_t raw_getlength(BlockDriverState *bs) |
| 503 | { |
| 504 | BDRVRawState *s = bs->opaque; |
| 505 | LARGE_INTEGER l; |
| 506 | ULARGE_INTEGER available, total, total_free; |
| 507 | DISK_GEOMETRY_EX dg; |
| 508 | DWORD count; |
| 509 | BOOL status; |
| 510 | |
| 511 | switch(s->type) { |
| 512 | case FTYPE_FILE: |
blueswir1 | b9e82a5 | 2009-04-05 18:03:31 +0000 | [diff] [blame] | 513 | l.LowPart = GetFileSize(s->hfile, (PDWORD)&l.HighPart); |
ths | 223d467 | 2007-12-15 17:28:36 +0000 | [diff] [blame] | 514 | if (l.LowPart == 0xffffffffUL && GetLastError() != NO_ERROR) |
| 515 | return -EIO; |
| 516 | break; |
| 517 | case FTYPE_CD: |
| 518 | if (!GetDiskFreeSpaceEx(s->drive_path, &available, &total, &total_free)) |
| 519 | return -EIO; |
| 520 | l.QuadPart = total.QuadPart; |
| 521 | break; |
| 522 | case FTYPE_HARDDISK: |
| 523 | status = DeviceIoControl(s->hfile, IOCTL_DISK_GET_DRIVE_GEOMETRY_EX, |
| 524 | NULL, 0, &dg, sizeof(dg), &count, NULL); |
| 525 | if (status != 0) { |
| 526 | l = dg.DiskSize; |
| 527 | } |
| 528 | break; |
| 529 | default: |
| 530 | return -EIO; |
| 531 | } |
| 532 | return l.QuadPart; |
| 533 | } |
| 534 | |
Fam Zheng | 4a1d5e1 | 2011-07-12 19:56:39 +0800 | [diff] [blame] | 535 | static int64_t raw_get_allocated_file_size(BlockDriverState *bs) |
| 536 | { |
| 537 | typedef DWORD (WINAPI * get_compressed_t)(const char *filename, |
| 538 | DWORD * high); |
| 539 | get_compressed_t get_compressed; |
| 540 | struct _stati64 st; |
| 541 | const char *filename = bs->filename; |
| 542 | /* WinNT support GetCompressedFileSize to determine allocate size */ |
| 543 | get_compressed = |
| 544 | (get_compressed_t) GetProcAddress(GetModuleHandle("kernel32"), |
| 545 | "GetCompressedFileSizeA"); |
| 546 | if (get_compressed) { |
| 547 | DWORD high, low; |
| 548 | low = get_compressed(filename, &high); |
| 549 | if (low != 0xFFFFFFFFlu || GetLastError() == NO_ERROR) { |
| 550 | return (((int64_t) high) << 32) + low; |
| 551 | } |
| 552 | } |
| 553 | |
| 554 | if (_stati64(filename, &st) < 0) { |
| 555 | return -1; |
| 556 | } |
| 557 | return st.st_size; |
| 558 | } |
| 559 | |
Kevin Wolf | 3766ef5 | 2018-02-05 16:24:32 +0100 | [diff] [blame] | 560 | static int raw_co_create(BlockdevCreateOptions *options, Error **errp) |
| 561 | { |
| 562 | BlockdevCreateOptionsFile *file_opts; |
| 563 | int fd; |
| 564 | |
| 565 | assert(options->driver == BLOCKDEV_DRIVER_FILE); |
| 566 | file_opts = &options->u.file; |
| 567 | |
| 568 | if (file_opts->has_preallocation) { |
| 569 | error_setg(errp, "Preallocation is not supported on Windows"); |
| 570 | return -EINVAL; |
| 571 | } |
| 572 | if (file_opts->has_nocow) { |
| 573 | error_setg(errp, "nocow is not supported on Windows"); |
| 574 | return -EINVAL; |
| 575 | } |
| 576 | |
| 577 | fd = qemu_open(file_opts->filename, O_WRONLY | O_CREAT | O_TRUNC | O_BINARY, |
| 578 | 0644); |
| 579 | if (fd < 0) { |
| 580 | error_setg_errno(errp, errno, "Could not create file"); |
| 581 | return -EIO; |
| 582 | } |
| 583 | set_sparse(fd); |
| 584 | ftruncate(fd, file_opts->size); |
| 585 | qemu_close(fd); |
| 586 | |
| 587 | return 0; |
| 588 | } |
| 589 | |
Stefan Hajnoczi | efc75e2 | 2018-01-18 13:43:45 +0100 | [diff] [blame] | 590 | static int coroutine_fn raw_co_create_opts(const char *filename, QemuOpts *opts, |
| 591 | Error **errp) |
ths | 223d467 | 2007-12-15 17:28:36 +0000 | [diff] [blame] | 592 | { |
Kevin Wolf | 3766ef5 | 2018-02-05 16:24:32 +0100 | [diff] [blame] | 593 | BlockdevCreateOptions options; |
Kevin Wolf | 0e7e198 | 2009-05-18 16:42:10 +0200 | [diff] [blame] | 594 | int64_t total_size = 0; |
ths | 223d467 | 2007-12-15 17:28:36 +0000 | [diff] [blame] | 595 | |
Max Reitz | d5546c5 | 2014-03-05 22:41:40 +0100 | [diff] [blame] | 596 | strstart(filename, "file:", &filename); |
| 597 | |
Kevin Wolf | 0e7e198 | 2009-05-18 16:42:10 +0200 | [diff] [blame] | 598 | /* Read out options */ |
Hu Tao | 180e952 | 2014-09-10 17:05:46 +0800 | [diff] [blame] | 599 | total_size = ROUND_UP(qemu_opt_get_size_del(opts, BLOCK_OPT_SIZE, 0), |
| 600 | BDRV_SECTOR_SIZE); |
ths | 223d467 | 2007-12-15 17:28:36 +0000 | [diff] [blame] | 601 | |
Kevin Wolf | 3766ef5 | 2018-02-05 16:24:32 +0100 | [diff] [blame] | 602 | options = (BlockdevCreateOptions) { |
| 603 | .driver = BLOCKDEV_DRIVER_FILE, |
| 604 | .u.file = { |
| 605 | .filename = (char *) filename, |
| 606 | .size = total_size, |
| 607 | .has_preallocation = false, |
| 608 | .has_nocow = false, |
| 609 | }, |
| 610 | }; |
| 611 | return raw_co_create(&options, errp); |
ths | 223d467 | 2007-12-15 17:28:36 +0000 | [diff] [blame] | 612 | } |
| 613 | |
Chunyan Liu | ddef769 | 2014-06-05 17:21:02 +0800 | [diff] [blame] | 614 | static QemuOptsList raw_create_opts = { |
| 615 | .name = "raw-create-opts", |
| 616 | .head = QTAILQ_HEAD_INITIALIZER(raw_create_opts.head), |
| 617 | .desc = { |
| 618 | { |
| 619 | .name = BLOCK_OPT_SIZE, |
| 620 | .type = QEMU_OPT_SIZE, |
| 621 | .help = "Virtual disk size" |
| 622 | }, |
| 623 | { /* end of list */ } |
| 624 | } |
Kevin Wolf | 0e7e198 | 2009-05-18 16:42:10 +0200 | [diff] [blame] | 625 | }; |
| 626 | |
Max Reitz | 5f535a9 | 2014-12-02 18:32:41 +0100 | [diff] [blame] | 627 | BlockDriver bdrv_file = { |
Christoph Hellwig | 84a12e6 | 2010-04-07 22:30:24 +0200 | [diff] [blame] | 628 | .format_name = "file", |
| 629 | .protocol_name = "file", |
aliguori | f1b2f71 | 2009-04-07 18:23:51 +0000 | [diff] [blame] | 630 | .instance_size = sizeof(BDRVRawState), |
BenoƮt Canet | 030be32 | 2013-09-24 17:07:04 +0200 | [diff] [blame] | 631 | .bdrv_needs_filename = true, |
Max Reitz | 7dc74db | 2014-03-05 22:41:39 +0100 | [diff] [blame] | 632 | .bdrv_parse_filename = raw_parse_filename, |
Chunyan Liu | ddef769 | 2014-06-05 17:21:02 +0800 | [diff] [blame] | 633 | .bdrv_file_open = raw_open, |
Eric Blake | 2914a1d | 2016-06-23 16:37:16 -0600 | [diff] [blame] | 634 | .bdrv_refresh_limits = raw_probe_alignment, |
Chunyan Liu | ddef769 | 2014-06-05 17:21:02 +0800 | [diff] [blame] | 635 | .bdrv_close = raw_close, |
Stefan Hajnoczi | efc75e2 | 2018-01-18 13:43:45 +0100 | [diff] [blame] | 636 | .bdrv_co_create_opts = raw_co_create_opts, |
Peter Lieven | 3ac2162 | 2013-06-28 12:47:42 +0200 | [diff] [blame] | 637 | .bdrv_has_zero_init = bdrv_has_zero_init_1, |
Max Reitz | 1dcaf52 | 2019-07-24 19:12:32 +0200 | [diff] [blame] | 638 | .bdrv_has_zero_init_truncate = bdrv_has_zero_init_1, |
Kevin Wolf | c68b89a | 2011-11-10 17:25:44 +0100 | [diff] [blame] | 639 | |
Eric Blake | de7056a | 2018-04-24 14:25:02 -0500 | [diff] [blame] | 640 | .bdrv_aio_preadv = raw_aio_preadv, |
| 641 | .bdrv_aio_pwritev = raw_aio_pwritev, |
Paolo Bonzini | fc4edb8 | 2012-06-09 04:48:28 +0200 | [diff] [blame] | 642 | .bdrv_aio_flush = raw_aio_flush, |
Kevin Wolf | c68b89a | 2011-11-10 17:25:44 +0100 | [diff] [blame] | 643 | |
Kevin Wolf | 061ca8a | 2018-06-21 17:54:35 +0200 | [diff] [blame] | 644 | .bdrv_co_truncate = raw_co_truncate, |
aliguori | f1b2f71 | 2009-04-07 18:23:51 +0000 | [diff] [blame] | 645 | .bdrv_getlength = raw_getlength, |
Fam Zheng | 4a1d5e1 | 2011-07-12 19:56:39 +0800 | [diff] [blame] | 646 | .bdrv_get_allocated_file_size |
| 647 | = raw_get_allocated_file_size, |
Kevin Wolf | 0e7e198 | 2009-05-18 16:42:10 +0200 | [diff] [blame] | 648 | |
Chunyan Liu | ddef769 | 2014-06-05 17:21:02 +0800 | [diff] [blame] | 649 | .create_opts = &raw_create_opts, |
ths | 223d467 | 2007-12-15 17:28:36 +0000 | [diff] [blame] | 650 | }; |
| 651 | |
| 652 | /***********************************************/ |
| 653 | /* host device */ |
| 654 | |
| 655 | static int find_cdrom(char *cdrom_name, int cdrom_name_size) |
| 656 | { |
| 657 | char drives[256], *pdrv = drives; |
| 658 | UINT type; |
| 659 | |
| 660 | memset(drives, 0, sizeof(drives)); |
| 661 | GetLogicalDriveStrings(sizeof(drives), drives); |
| 662 | while(pdrv[0] != '\0') { |
| 663 | type = GetDriveType(pdrv); |
| 664 | switch(type) { |
| 665 | case DRIVE_CDROM: |
| 666 | snprintf(cdrom_name, cdrom_name_size, "\\\\.\\%c:", pdrv[0]); |
| 667 | return 0; |
| 668 | break; |
| 669 | } |
| 670 | pdrv += lstrlen(pdrv) + 1; |
| 671 | } |
| 672 | return -1; |
| 673 | } |
| 674 | |
| 675 | static int find_device_type(BlockDriverState *bs, const char *filename) |
| 676 | { |
| 677 | BDRVRawState *s = bs->opaque; |
| 678 | UINT type; |
| 679 | const char *p; |
| 680 | |
| 681 | if (strstart(filename, "\\\\.\\", &p) || |
| 682 | strstart(filename, "//./", &p)) { |
| 683 | if (stristart(p, "PhysicalDrive", NULL)) |
| 684 | return FTYPE_HARDDISK; |
| 685 | snprintf(s->drive_path, sizeof(s->drive_path), "%c:\\", p[0]); |
| 686 | type = GetDriveType(s->drive_path); |
aliguori | 3060cd1 | 2009-04-07 01:24:53 +0000 | [diff] [blame] | 687 | switch (type) { |
| 688 | case DRIVE_REMOVABLE: |
| 689 | case DRIVE_FIXED: |
| 690 | return FTYPE_HARDDISK; |
| 691 | case DRIVE_CDROM: |
ths | 223d467 | 2007-12-15 17:28:36 +0000 | [diff] [blame] | 692 | return FTYPE_CD; |
aliguori | 3060cd1 | 2009-04-07 01:24:53 +0000 | [diff] [blame] | 693 | default: |
ths | 223d467 | 2007-12-15 17:28:36 +0000 | [diff] [blame] | 694 | return FTYPE_FILE; |
aliguori | 3060cd1 | 2009-04-07 01:24:53 +0000 | [diff] [blame] | 695 | } |
ths | 223d467 | 2007-12-15 17:28:36 +0000 | [diff] [blame] | 696 | } else { |
| 697 | return FTYPE_FILE; |
| 698 | } |
| 699 | } |
| 700 | |
Christoph Hellwig | 508c7cb | 2009-06-15 14:04:22 +0200 | [diff] [blame] | 701 | static int hdev_probe_device(const char *filename) |
| 702 | { |
| 703 | if (strstart(filename, "/dev/cdrom", NULL)) |
| 704 | return 100; |
| 705 | if (is_windows_drive(filename)) |
| 706 | return 100; |
| 707 | return 0; |
| 708 | } |
| 709 | |
Max Reitz | 57ed25b | 2014-03-08 00:39:45 +0100 | [diff] [blame] | 710 | static void hdev_parse_filename(const char *filename, QDict *options, |
| 711 | Error **errp) |
| 712 | { |
Max Reitz | 03c320d | 2017-05-22 21:52:16 +0200 | [diff] [blame] | 713 | bdrv_parse_filename_strip_prefix(filename, "host_device:", options); |
Max Reitz | 57ed25b | 2014-03-08 00:39:45 +0100 | [diff] [blame] | 714 | } |
| 715 | |
Eric Blake | de7056a | 2018-04-24 14:25:02 -0500 | [diff] [blame] | 716 | static void hdev_refresh_limits(BlockDriverState *bs, Error **errp) |
| 717 | { |
| 718 | /* XXX Does Windows support AIO on less than 512-byte alignment? */ |
| 719 | bs->bl.request_alignment = 512; |
| 720 | } |
| 721 | |
Max Reitz | 015a103 | 2013-09-05 14:22:29 +0200 | [diff] [blame] | 722 | static int hdev_open(BlockDriverState *bs, QDict *options, int flags, |
| 723 | Error **errp) |
ths | 223d467 | 2007-12-15 17:28:36 +0000 | [diff] [blame] | 724 | { |
| 725 | BDRVRawState *s = bs->opaque; |
| 726 | int access_flags, create_flags; |
Stefan Weil | 68dc036 | 2013-09-01 22:59:25 +0200 | [diff] [blame] | 727 | int ret = 0; |
ths | 223d467 | 2007-12-15 17:28:36 +0000 | [diff] [blame] | 728 | DWORD overlapped; |
| 729 | char device_name[64]; |
Stefan Weil | 68dc036 | 2013-09-01 22:59:25 +0200 | [diff] [blame] | 730 | |
| 731 | Error *local_err = NULL; |
| 732 | const char *filename; |
Kevin Wolf | 0a4279d | 2016-09-08 15:09:01 +0200 | [diff] [blame] | 733 | bool use_aio; |
Stefan Weil | 68dc036 | 2013-09-01 22:59:25 +0200 | [diff] [blame] | 734 | |
Peter Crosthwaite | 87ea75d | 2014-01-01 18:49:17 -0800 | [diff] [blame] | 735 | QemuOpts *opts = qemu_opts_create(&raw_runtime_opts, NULL, 0, |
| 736 | &error_abort); |
Stefan Weil | 68dc036 | 2013-09-01 22:59:25 +0200 | [diff] [blame] | 737 | qemu_opts_absorb_qdict(opts, options, &local_err); |
Markus Armbruster | 84d18f0 | 2014-01-30 15:07:28 +0100 | [diff] [blame] | 738 | if (local_err) { |
Max Reitz | c6252b7 | 2013-10-10 15:44:02 +0200 | [diff] [blame] | 739 | error_propagate(errp, local_err); |
Stefan Weil | 68dc036 | 2013-09-01 22:59:25 +0200 | [diff] [blame] | 740 | ret = -EINVAL; |
| 741 | goto done; |
| 742 | } |
| 743 | |
| 744 | filename = qemu_opt_get(opts, "filename"); |
ths | 223d467 | 2007-12-15 17:28:36 +0000 | [diff] [blame] | 745 | |
Kevin Wolf | 0a4279d | 2016-09-08 15:09:01 +0200 | [diff] [blame] | 746 | use_aio = get_aio_option(opts, flags, &local_err); |
| 747 | if (!local_err && use_aio) { |
| 748 | error_setg(&local_err, "AIO is not supported on Windows host devices"); |
| 749 | } |
| 750 | if (local_err) { |
| 751 | error_propagate(errp, local_err); |
| 752 | ret = -EINVAL; |
| 753 | goto done; |
| 754 | } |
| 755 | |
ths | 223d467 | 2007-12-15 17:28:36 +0000 | [diff] [blame] | 756 | if (strstart(filename, "/dev/cdrom", NULL)) { |
Stefan Weil | 68dc036 | 2013-09-01 22:59:25 +0200 | [diff] [blame] | 757 | if (find_cdrom(device_name, sizeof(device_name)) < 0) { |
Max Reitz | c6252b7 | 2013-10-10 15:44:02 +0200 | [diff] [blame] | 758 | error_setg(errp, "Could not open CD-ROM drive"); |
Stefan Weil | 68dc036 | 2013-09-01 22:59:25 +0200 | [diff] [blame] | 759 | ret = -ENOENT; |
| 760 | goto done; |
| 761 | } |
ths | 223d467 | 2007-12-15 17:28:36 +0000 | [diff] [blame] | 762 | filename = device_name; |
| 763 | } else { |
| 764 | /* transform drive letters into device name */ |
| 765 | if (((filename[0] >= 'a' && filename[0] <= 'z') || |
| 766 | (filename[0] >= 'A' && filename[0] <= 'Z')) && |
| 767 | filename[1] == ':' && filename[2] == '\0') { |
| 768 | snprintf(device_name, sizeof(device_name), "\\\\.\\%c:", filename[0]); |
| 769 | filename = device_name; |
| 770 | } |
| 771 | } |
| 772 | s->type = find_device_type(bs, filename); |
| 773 | |
Kevin Wolf | 0a4279d | 2016-09-08 15:09:01 +0200 | [diff] [blame] | 774 | raw_parse_flags(flags, use_aio, &access_flags, &overlapped); |
Jeff Cody | 6a8dc04 | 2012-09-20 15:13:21 -0400 | [diff] [blame] | 775 | |
ths | 223d467 | 2007-12-15 17:28:36 +0000 | [diff] [blame] | 776 | create_flags = OPEN_EXISTING; |
| 777 | |
ths | 223d467 | 2007-12-15 17:28:36 +0000 | [diff] [blame] | 778 | s->hfile = CreateFile(filename, access_flags, |
| 779 | FILE_SHARE_READ, NULL, |
| 780 | create_flags, overlapped, NULL); |
| 781 | if (s->hfile == INVALID_HANDLE_VALUE) { |
| 782 | int err = GetLastError(); |
| 783 | |
Stefan Weil | 68dc036 | 2013-09-01 22:59:25 +0200 | [diff] [blame] | 784 | if (err == ERROR_ACCESS_DENIED) { |
| 785 | ret = -EACCES; |
| 786 | } else { |
Max Reitz | 45d57f6 | 2013-10-11 14:30:16 +0200 | [diff] [blame] | 787 | ret = -EINVAL; |
Stefan Weil | 68dc036 | 2013-09-01 22:59:25 +0200 | [diff] [blame] | 788 | } |
Max Reitz | 45d57f6 | 2013-10-11 14:30:16 +0200 | [diff] [blame] | 789 | error_setg_errno(errp, -ret, "Could not open device"); |
Stefan Weil | 68dc036 | 2013-09-01 22:59:25 +0200 | [diff] [blame] | 790 | goto done; |
ths | 223d467 | 2007-12-15 17:28:36 +0000 | [diff] [blame] | 791 | } |
Stefan Weil | 68dc036 | 2013-09-01 22:59:25 +0200 | [diff] [blame] | 792 | |
| 793 | done: |
| 794 | qemu_opts_del(opts); |
| 795 | return ret; |
ths | 223d467 | 2007-12-15 17:28:36 +0000 | [diff] [blame] | 796 | } |
| 797 | |
Anthony Liguori | 5efa9d5 | 2009-05-09 17:03:42 -0500 | [diff] [blame] | 798 | static BlockDriver bdrv_host_device = { |
aurel32 | e60f469 | 2009-03-07 22:00:29 +0000 | [diff] [blame] | 799 | .format_name = "host_device", |
Christoph Hellwig | 84a12e6 | 2010-04-07 22:30:24 +0200 | [diff] [blame] | 800 | .protocol_name = "host_device", |
aurel32 | e60f469 | 2009-03-07 22:00:29 +0000 | [diff] [blame] | 801 | .instance_size = sizeof(BDRVRawState), |
BenoƮt Canet | 030be32 | 2013-09-24 17:07:04 +0200 | [diff] [blame] | 802 | .bdrv_needs_filename = true, |
Max Reitz | 57ed25b | 2014-03-08 00:39:45 +0100 | [diff] [blame] | 803 | .bdrv_parse_filename = hdev_parse_filename, |
Christoph Hellwig | 508c7cb | 2009-06-15 14:04:22 +0200 | [diff] [blame] | 804 | .bdrv_probe_device = hdev_probe_device, |
Kevin Wolf | 66f82ce | 2010-04-14 14:17:38 +0200 | [diff] [blame] | 805 | .bdrv_file_open = hdev_open, |
aurel32 | e60f469 | 2009-03-07 22:00:29 +0000 | [diff] [blame] | 806 | .bdrv_close = raw_close, |
Eric Blake | de7056a | 2018-04-24 14:25:02 -0500 | [diff] [blame] | 807 | .bdrv_refresh_limits = hdev_refresh_limits, |
ths | 223d467 | 2007-12-15 17:28:36 +0000 | [diff] [blame] | 808 | |
Eric Blake | de7056a | 2018-04-24 14:25:02 -0500 | [diff] [blame] | 809 | .bdrv_aio_preadv = raw_aio_preadv, |
| 810 | .bdrv_aio_pwritev = raw_aio_pwritev, |
Paolo Bonzini | fc4edb8 | 2012-06-09 04:48:28 +0200 | [diff] [blame] | 811 | .bdrv_aio_flush = raw_aio_flush, |
Kevin Wolf | c68b89a | 2011-11-10 17:25:44 +0100 | [diff] [blame] | 812 | |
Stefan Hajnoczi | 85ebd38 | 2014-05-08 16:34:50 +0200 | [diff] [blame] | 813 | .bdrv_detach_aio_context = raw_detach_aio_context, |
| 814 | .bdrv_attach_aio_context = raw_attach_aio_context, |
| 815 | |
Kevin Wolf | b94a261 | 2013-10-29 12:18:58 +0100 | [diff] [blame] | 816 | .bdrv_getlength = raw_getlength, |
| 817 | .has_variable_length = true, |
| 818 | |
Fam Zheng | 4a1d5e1 | 2011-07-12 19:56:39 +0800 | [diff] [blame] | 819 | .bdrv_get_allocated_file_size |
| 820 | = raw_get_allocated_file_size, |
ths | 223d467 | 2007-12-15 17:28:36 +0000 | [diff] [blame] | 821 | }; |
Anthony Liguori | 5efa9d5 | 2009-05-09 17:03:42 -0500 | [diff] [blame] | 822 | |
Christoph Hellwig | 84a12e6 | 2010-04-07 22:30:24 +0200 | [diff] [blame] | 823 | static void bdrv_file_init(void) |
Anthony Liguori | 5efa9d5 | 2009-05-09 17:03:42 -0500 | [diff] [blame] | 824 | { |
Christoph Hellwig | 84a12e6 | 2010-04-07 22:30:24 +0200 | [diff] [blame] | 825 | bdrv_register(&bdrv_file); |
Anthony Liguori | 5efa9d5 | 2009-05-09 17:03:42 -0500 | [diff] [blame] | 826 | bdrv_register(&bdrv_host_device); |
| 827 | } |
| 828 | |
Christoph Hellwig | 84a12e6 | 2010-04-07 22:30:24 +0200 | [diff] [blame] | 829 | block_init(bdrv_file_init); |