diff options
| -rw-r--r-- | Makefile | 9 | ||||
| -rw-r--r-- | Makefile.target | 6 | ||||
| -rw-r--r-- | block-raw-posix.c (renamed from block-raw.c) | 522 | ||||
| -rw-r--r-- | block-raw-win32.c | 544 |
4 files changed, 558 insertions, 523 deletions
@@ -119,9 +119,16 @@ libqemu_common.a: $(OBJS) rm -f $@ $(AR) rcs $@ $(OBJS) +QEMU_IMG_BLOCK_OBJS = $(BLOCK_OBJS) +ifdef CONFIG_WIN32 +QEMU_IMG_BLOCK_OBJS += qemu-img-block-raw-win32.o +else +QEMU_IMG_BLOCK_OBJS += qemu-img-block-raw-posix.o +endif + ###################################################################### -qemu-img$(EXESUF): qemu-img.o qemu-img-block.o qemu-img-block-raw.o $(BLOCK_OBJS) +qemu-img$(EXESUF): qemu-img.o qemu-img-block.o $(QEMU_IMG_BLOCK_OBJS) $(CC) $(LDFLAGS) $(BASE_LDFLAGS) -o $@ $^ -lz $(LIBS) qemu-img-%.o: %.c diff --git a/Makefile.target b/Makefile.target index 61697fe6fa..53607e4010 100644 --- a/Makefile.target +++ b/Makefile.target @@ -398,7 +398,11 @@ endif # must use static linking to avoid leaving stuff in virtual address space VL_OBJS=vl.o osdep.o monitor.o pci.o loader.o isa_mmio.o # XXX: suppress QEMU_TOOL tests -VL_OBJS+=block-raw.o +ifdef CONFIG_WIN32 +VL_OBJS+=block-raw-win32.o +else +VL_OBJS+=block-raw-posix.o +endif ifdef CONFIG_ALSA LIBS += -lasound diff --git a/block-raw.c b/block-raw-posix.c index 732b4b8e03..089a1f4a99 100644 --- a/block-raw.c +++ b/block-raw-posix.c @@ -1,5 +1,5 @@ /* - * Block driver for RAW files + * Block driver for RAW files (posix) * * Copyright (c) 2006 Fabrice Bellard * @@ -28,7 +28,6 @@ #endif #include "block_int.h" #include <assert.h> -#ifndef _WIN32 #include <aio.h> #ifdef CONFIG_COCOA @@ -900,522 +899,3 @@ BlockDriver bdrv_host_device = { .bdrv_eject = raw_eject, .bdrv_set_locked = raw_set_locked, }; - -#else /* _WIN32 */ - -/* XXX: use another file ? */ -#include <winioctl.h> - -#define FTYPE_FILE 0 -#define FTYPE_CD 1 -#define FTYPE_HARDDISK 2 - -typedef struct BDRVRawState { - HANDLE hfile; - int type; - char drive_path[16]; /* format: "d:\" */ -} BDRVRawState; - -typedef struct RawAIOCB { - BlockDriverAIOCB common; - HANDLE hEvent; - OVERLAPPED ov; - int count; -} RawAIOCB; - -int qemu_ftruncate64(int fd, int64_t length) -{ - LARGE_INTEGER li; - LONG high; - HANDLE h; - BOOL res; - - if ((GetVersion() & 0x80000000UL) && (length >> 32) != 0) - return -1; - - h = (HANDLE)_get_osfhandle(fd); - - /* get current position, ftruncate do not change position */ - li.HighPart = 0; - li.LowPart = SetFilePointer (h, 0, &li.HighPart, FILE_CURRENT); - if (li.LowPart == 0xffffffffUL && GetLastError() != NO_ERROR) - return -1; - - high = length >> 32; - if (!SetFilePointer(h, (DWORD) length, &high, FILE_BEGIN)) - return -1; - res = SetEndOfFile(h); - - /* back to old position */ - SetFilePointer(h, li.LowPart, &li.HighPart, FILE_BEGIN); - return res ? 0 : -1; -} - -static int set_sparse(int fd) -{ - DWORD returned; - return (int) DeviceIoControl((HANDLE)_get_osfhandle(fd), FSCTL_SET_SPARSE, - NULL, 0, NULL, 0, &returned, NULL); -} - -static int raw_open(BlockDriverState *bs, const char *filename, int flags) -{ - BDRVRawState *s = bs->opaque; - int access_flags, create_flags; - DWORD overlapped; - - s->type = FTYPE_FILE; - - if ((flags & BDRV_O_ACCESS) == O_RDWR) { - access_flags = GENERIC_READ | GENERIC_WRITE; - } else { - access_flags = GENERIC_READ; - } - if (flags & BDRV_O_CREAT) { - create_flags = CREATE_ALWAYS; - } else { - create_flags = OPEN_EXISTING; - } -#ifdef QEMU_IMG - overlapped = FILE_ATTRIBUTE_NORMAL; -#else - overlapped = FILE_FLAG_OVERLAPPED; -#endif - s->hfile = CreateFile(filename, access_flags, - FILE_SHARE_READ, NULL, - create_flags, overlapped, NULL); - if (s->hfile == INVALID_HANDLE_VALUE) { - int err = GetLastError(); - - if (err == ERROR_ACCESS_DENIED) - return -EACCES; - return -1; - } - return 0; -} - -static int raw_pread(BlockDriverState *bs, int64_t offset, - uint8_t *buf, int count) -{ - BDRVRawState *s = bs->opaque; - OVERLAPPED ov; - DWORD ret_count; - int ret; - - memset(&ov, 0, sizeof(ov)); - ov.Offset = offset; - ov.OffsetHigh = offset >> 32; - ret = ReadFile(s->hfile, buf, count, &ret_count, &ov); - if (!ret) { - ret = GetOverlappedResult(s->hfile, &ov, &ret_count, TRUE); - if (!ret) - return -EIO; - else - return ret_count; - } - return ret_count; -} - -static int raw_pwrite(BlockDriverState *bs, int64_t offset, - const uint8_t *buf, int count) -{ - BDRVRawState *s = bs->opaque; - OVERLAPPED ov; - DWORD ret_count; - int ret; - - memset(&ov, 0, sizeof(ov)); - ov.Offset = offset; - ov.OffsetHigh = offset >> 32; - ret = WriteFile(s->hfile, buf, count, &ret_count, &ov); - if (!ret) { - ret = GetOverlappedResult(s->hfile, &ov, &ret_count, TRUE); - if (!ret) - return -EIO; - else - return ret_count; - } - return ret_count; -} - -#if 0 -#ifndef QEMU_IMG -static void raw_aio_cb(void *opaque) -{ - RawAIOCB *acb = opaque; - BlockDriverState *bs = acb->common.bs; - BDRVRawState *s = bs->opaque; - DWORD ret_count; - int ret; - - ret = GetOverlappedResult(s->hfile, &acb->ov, &ret_count, TRUE); - if (!ret || ret_count != acb->count) { - acb->common.cb(acb->common.opaque, -EIO); - } else { - acb->common.cb(acb->common.opaque, 0); - } -} -#endif - -static RawAIOCB *raw_aio_setup(BlockDriverState *bs, - int64_t sector_num, uint8_t *buf, int nb_sectors, - BlockDriverCompletionFunc *cb, void *opaque) -{ - RawAIOCB *acb; - int64_t offset; - - acb = qemu_aio_get(bs, cb, opaque); - if (acb->hEvent) { - acb->hEvent = CreateEvent(NULL, TRUE, FALSE, NULL); - if (!acb->hEvent) { - qemu_aio_release(acb); - return NULL; - } - } - memset(&acb->ov, 0, sizeof(acb->ov)); - offset = sector_num * 512; - acb->ov.Offset = offset; - acb->ov.OffsetHigh = offset >> 32; - acb->ov.hEvent = acb->hEvent; - acb->count = nb_sectors * 512; -#ifndef QEMU_IMG - qemu_add_wait_object(acb->ov.hEvent, raw_aio_cb, acb); -#endif - return acb; -} - -static BlockDriverAIOCB *raw_aio_read(BlockDriverState *bs, - int64_t sector_num, uint8_t *buf, int nb_sectors, - BlockDriverCompletionFunc *cb, void *opaque) -{ - BDRVRawState *s = bs->opaque; - RawAIOCB *acb; - int ret; - - acb = raw_aio_setup(bs, sector_num, buf, nb_sectors, cb, opaque); - if (!acb) - return NULL; - ret = ReadFile(s->hfile, buf, acb->count, NULL, &acb->ov); - if (!ret) { - qemu_aio_release(acb); - return NULL; - } -#ifdef QEMU_IMG - qemu_aio_release(acb); -#endif - return (BlockDriverAIOCB *)acb; -} - -static BlockDriverAIOCB *raw_aio_write(BlockDriverState *bs, - int64_t sector_num, uint8_t *buf, int nb_sectors, - BlockDriverCompletionFunc *cb, void *opaque) -{ - BDRVRawState *s = bs->opaque; - RawAIOCB *acb; - int ret; - - acb = raw_aio_setup(bs, sector_num, buf, nb_sectors, cb, opaque); - if (!acb) - return NULL; - ret = WriteFile(s->hfile, buf, acb->count, NULL, &acb->ov); - if (!ret) { - qemu_aio_release(acb); - return NULL; - } -#ifdef QEMU_IMG - qemu_aio_release(acb); -#endif - return (BlockDriverAIOCB *)acb; -} - -static void raw_aio_cancel(BlockDriverAIOCB *blockacb) -{ -#ifndef QEMU_IMG - RawAIOCB *acb = (RawAIOCB *)blockacb; - BlockDriverState *bs = acb->common.bs; - BDRVRawState *s = bs->opaque; - - qemu_del_wait_object(acb->ov.hEvent, raw_aio_cb, acb); - /* XXX: if more than one async I/O it is not correct */ - CancelIo(s->hfile); - qemu_aio_release(acb); -#endif -} -#endif /* #if 0 */ - -static void raw_flush(BlockDriverState *bs) -{ - BDRVRawState *s = bs->opaque; - FlushFileBuffers(s->hfile); -} - -static void raw_close(BlockDriverState *bs) -{ - BDRVRawState *s = bs->opaque; - CloseHandle(s->hfile); -} - -static int raw_truncate(BlockDriverState *bs, int64_t offset) -{ - BDRVRawState *s = bs->opaque; - DWORD low, high; - - low = offset; - high = offset >> 32; - if (!SetFilePointer(s->hfile, low, &high, FILE_BEGIN)) - return -EIO; - if (!SetEndOfFile(s->hfile)) - return -EIO; - return 0; -} - -static int64_t raw_getlength(BlockDriverState *bs) -{ - BDRVRawState *s = bs->opaque; - LARGE_INTEGER l; - ULARGE_INTEGER available, total, total_free; - DISK_GEOMETRY_EX dg; - DWORD count; - BOOL status; - - switch(s->type) { - case FTYPE_FILE: - l.LowPart = GetFileSize(s->hfile, &l.HighPart); - if (l.LowPart == 0xffffffffUL && GetLastError() != NO_ERROR) - return -EIO; - break; - case FTYPE_CD: - if (!GetDiskFreeSpaceEx(s->drive_path, &available, &total, &total_free)) - return -EIO; - l.QuadPart = total.QuadPart; - break; - case FTYPE_HARDDISK: - status = DeviceIoControl(s->hfile, IOCTL_DISK_GET_DRIVE_GEOMETRY_EX, - NULL, 0, &dg, sizeof(dg), &count, NULL); - if (status != 0) { - l = dg.DiskSize; - } - break; - default: - return -EIO; - } - return l.QuadPart; -} - -static int raw_create(const char *filename, int64_t total_size, - const char *backing_file, int flags) -{ - int fd; - - if (flags || backing_file) - return -ENOTSUP; - - fd = open(filename, O_WRONLY | O_CREAT | O_TRUNC | O_BINARY, - 0644); - if (fd < 0) - return -EIO; - set_sparse(fd); - ftruncate(fd, total_size * 512); - close(fd); - return 0; -} - -void qemu_aio_init(void) -{ -} - -void qemu_aio_poll(void) -{ -} - -void qemu_aio_flush(void) -{ -} - -void qemu_aio_wait_start(void) -{ -} - -void qemu_aio_wait(void) -{ -#ifndef QEMU_IMG - qemu_bh_poll(); -#endif -} - -void qemu_aio_wait_end(void) -{ -} - -BlockDriver bdrv_raw = { - "raw", - sizeof(BDRVRawState), - NULL, /* no probe for protocols */ - raw_open, - NULL, - NULL, - raw_close, - raw_create, - raw_flush, - -#if 0 - .bdrv_aio_read = raw_aio_read, - .bdrv_aio_write = raw_aio_write, - .bdrv_aio_cancel = raw_aio_cancel, - .aiocb_size = sizeof(RawAIOCB); -#endif - .protocol_name = "file", - .bdrv_pread = raw_pread, - .bdrv_pwrite = raw_pwrite, - .bdrv_truncate = raw_truncate, - .bdrv_getlength = raw_getlength, -}; - -/***********************************************/ -/* host device */ - -static int find_cdrom(char *cdrom_name, int cdrom_name_size) -{ - char drives[256], *pdrv = drives; - UINT type; - - memset(drives, 0, sizeof(drives)); - GetLogicalDriveStrings(sizeof(drives), drives); - while(pdrv[0] != '\0') { - type = GetDriveType(pdrv); - switch(type) { - case DRIVE_CDROM: - snprintf(cdrom_name, cdrom_name_size, "\\\\.\\%c:", pdrv[0]); - return 0; - break; - } - pdrv += lstrlen(pdrv) + 1; - } - return -1; -} - -static int find_device_type(BlockDriverState *bs, const char *filename) -{ - BDRVRawState *s = bs->opaque; - UINT type; - const char *p; - - if (strstart(filename, "\\\\.\\", &p) || - strstart(filename, "//./", &p)) { - if (stristart(p, "PhysicalDrive", NULL)) - return FTYPE_HARDDISK; - snprintf(s->drive_path, sizeof(s->drive_path), "%c:\\", p[0]); - type = GetDriveType(s->drive_path); - if (type == DRIVE_CDROM) - return FTYPE_CD; - else - return FTYPE_FILE; - } else { - return FTYPE_FILE; - } -} - -static int hdev_open(BlockDriverState *bs, const char *filename, int flags) -{ - BDRVRawState *s = bs->opaque; - int access_flags, create_flags; - DWORD overlapped; - char device_name[64]; - - if (strstart(filename, "/dev/cdrom", NULL)) { - if (find_cdrom(device_name, sizeof(device_name)) < 0) - return -ENOENT; - filename = device_name; - } else { - /* transform drive letters into device name */ - if (((filename[0] >= 'a' && filename[0] <= 'z') || - (filename[0] >= 'A' && filename[0] <= 'Z')) && - filename[1] == ':' && filename[2] == '\0') { - snprintf(device_name, sizeof(device_name), "\\\\.\\%c:", filename[0]); - filename = device_name; - } - } - s->type = find_device_type(bs, filename); - - if ((flags & BDRV_O_ACCESS) == O_RDWR) { - access_flags = GENERIC_READ | GENERIC_WRITE; - } else { - access_flags = GENERIC_READ; - } - create_flags = OPEN_EXISTING; - -#ifdef QEMU_IMG - overlapped = FILE_ATTRIBUTE_NORMAL; -#else - overlapped = FILE_FLAG_OVERLAPPED; -#endif - s->hfile = CreateFile(filename, access_flags, - FILE_SHARE_READ, NULL, - create_flags, overlapped, NULL); - if (s->hfile == INVALID_HANDLE_VALUE) { - int err = GetLastError(); - - if (err == ERROR_ACCESS_DENIED) - return -EACCES; - return -1; - } - return 0; -} - -#if 0 -/***********************************************/ -/* removable device additional commands */ - -static int raw_is_inserted(BlockDriverState *bs) -{ - return 1; -} - -static int raw_media_changed(BlockDriverState *bs) -{ - return -ENOTSUP; -} - -static int raw_eject(BlockDriverState *bs, int eject_flag) -{ - DWORD ret_count; - - if (s->type == FTYPE_FILE) - return -ENOTSUP; - if (eject_flag) { - DeviceIoControl(s->hfile, IOCTL_STORAGE_EJECT_MEDIA, - NULL, 0, NULL, 0, &lpBytesReturned, NULL); - } else { - DeviceIoControl(s->hfile, IOCTL_STORAGE_LOAD_MEDIA, - NULL, 0, NULL, 0, &lpBytesReturned, NULL); - } -} - -static int raw_set_locked(BlockDriverState *bs, int locked) -{ - return -ENOTSUP; -} -#endif - -BlockDriver bdrv_host_device = { - "host_device", - sizeof(BDRVRawState), - NULL, /* no probe for protocols */ - hdev_open, - NULL, - NULL, - raw_close, - NULL, - raw_flush, - -#if 0 - .bdrv_aio_read = raw_aio_read, - .bdrv_aio_write = raw_aio_write, - .bdrv_aio_cancel = raw_aio_cancel, - .aiocb_size = sizeof(RawAIOCB); -#endif - .bdrv_pread = raw_pread, - .bdrv_pwrite = raw_pwrite, - .bdrv_getlength = raw_getlength, -}; -#endif /* _WIN32 */ diff --git a/block-raw-win32.c b/block-raw-win32.c new file mode 100644 index 0000000000..db9995c046 --- /dev/null +++ b/block-raw-win32.c @@ -0,0 +1,544 @@ +/* + * Block driver for RAW files (win32) + * + * Copyright (c) 2006 Fabrice Bellard + * + * Permission is hereby granted, free of charge, to any person obtaining a copy + * of this software and associated documentation files (the "Software"), to deal + * in the Software without restriction, including without limitation the rights + * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell + * copies of the Software, and to permit persons to whom the Software is + * furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included in + * all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL + * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, + * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN + * THE SOFTWARE. + */ +#include "qemu-common.h" +#ifndef QEMU_IMG +#include "qemu-timer.h" +#include "exec-all.h" +#endif +#include "block_int.h" +#include <assert.h> +#include <winioctl.h> + +#define FTYPE_FILE 0 +#define FTYPE_CD 1 +#define FTYPE_HARDDISK 2 + +typedef struct BDRVRawState { + HANDLE hfile; + int type; + char drive_path[16]; /* format: "d:\" */ +} BDRVRawState; + +typedef struct RawAIOCB { + BlockDriverAIOCB common; + HANDLE hEvent; + OVERLAPPED ov; + int count; +} RawAIOCB; + +int qemu_ftruncate64(int fd, int64_t length) +{ + LARGE_INTEGER li; + LONG high; + HANDLE h; + BOOL res; + + if ((GetVersion() & 0x80000000UL) && (length >> 32) != 0) + return -1; + + h = (HANDLE)_get_osfhandle(fd); + + /* get current position, ftruncate do not change position */ + li.HighPart = 0; + li.LowPart = SetFilePointer (h, 0, &li.HighPart, FILE_CURRENT); + if (li.LowPart == 0xffffffffUL && GetLastError() != NO_ERROR) + return -1; + + high = length >> 32; + if (!SetFilePointer(h, (DWORD) length, &high, FILE_BEGIN)) + return -1; + res = SetEndOfFile(h); + + /* back to old position */ + SetFilePointer(h, li.LowPart, &li.HighPart, FILE_BEGIN); + return res ? 0 : -1; +} + +static int set_sparse(int fd) +{ + DWORD returned; + return (int) DeviceIoControl((HANDLE)_get_osfhandle(fd), FSCTL_SET_SPARSE, + NULL, 0, NULL, 0, &returned, NULL); +} + +static int raw_open(BlockDriverState *bs, const char *filename, int flags) +{ + BDRVRawState *s = bs->opaque; + int access_flags, create_flags; + DWORD overlapped; + + s->type = FTYPE_FILE; + + if ((flags & BDRV_O_ACCESS) == O_RDWR) { + access_flags = GENERIC_READ | GENERIC_WRITE; + } else { + access_flags = GENERIC_READ; + } + if (flags & BDRV_O_CREAT) { + create_flags = CREATE_ALWAYS; + } else { + create_flags = OPEN_EXISTING; + } +#ifdef QEMU_IMG + overlapped = FILE_ATTRIBUTE_NORMAL; +#else + overlapped = FILE_FLAG_OVERLAPPED; +#endif + s->hfile = CreateFile(filename, access_flags, + FILE_SHARE_READ, NULL, + create_flags, overlapped, NULL); + if (s->hfile == INVALID_HANDLE_VALUE) { + int err = GetLastError(); + + if (err == ERROR_ACCESS_DENIED) + return -EACCES; + return -1; + } + return 0; +} + +static int raw_pread(BlockDriverState *bs, int64_t offset, + uint8_t *buf, int count) +{ + BDRVRawState *s = bs->opaque; + OVERLAPPED ov; + DWORD ret_count; + int ret; + + memset(&ov, 0, sizeof(ov)); + ov.Offset = offset; + ov.OffsetHigh = offset >> 32; + ret = ReadFile(s->hfile, buf, count, &ret_count, &ov); + if (!ret) { + ret = GetOverlappedResult(s->hfile, &ov, &ret_count, TRUE); + if (!ret) + return -EIO; + else + return ret_count; + } + return ret_count; +} + +static int raw_pwrite(BlockDriverState *bs, int64_t offset, + const uint8_t *buf, int count) +{ + BDRVRawState *s = bs->opaque; + OVERLAPPED ov; + DWORD ret_count; + int ret; + + memset(&ov, 0, sizeof(ov)); + ov.Offset = offset; + ov.OffsetHigh = offset >> 32; + ret = WriteFile(s->hfile, buf, count, &ret_count, &ov); + if (!ret) { + ret = GetOverlappedResult(s->hfile, &ov, &ret_count, TRUE); + if (!ret) + return -EIO; + else + return ret_count; + } + return ret_count; +} + +#if 0 +#ifndef QEMU_IMG +static void raw_aio_cb(void *opaque) +{ + RawAIOCB *acb = opaque; + BlockDriverState *bs = acb->common.bs; + BDRVRawState *s = bs->opaque; + DWORD ret_count; + int ret; + + ret = GetOverlappedResult(s->hfile, &acb->ov, &ret_count, TRUE); + if (!ret || ret_count != acb->count) { + acb->common.cb(acb->common.opaque, -EIO); + } else { + acb->common.cb(acb->common.opaque, 0); + } +} +#endif + +static RawAIOCB *raw_aio_setup(BlockDriverState *bs, + int64_t sector_num, uint8_t *buf, int nb_sectors, + BlockDriverCompletionFunc *cb, void *opaque) +{ + RawAIOCB *acb; + int64_t offset; + + acb = qemu_aio_get(bs, cb, opaque); + if (acb->hEvent) { + acb->hEvent = CreateEvent(NULL, TRUE, FALSE, NULL); + if (!acb->hEvent) { + qemu_aio_release(acb); + return NULL; + } + } + memset(&acb->ov, 0, sizeof(acb->ov)); + offset = sector_num * 512; + acb->ov.Offset = offset; + acb->ov.OffsetHigh = offset >> 32; + acb->ov.hEvent = acb->hEvent; + acb->count = nb_sectors * 512; +#ifndef QEMU_IMG + qemu_add_wait_object(acb->ov.hEvent, raw_aio_cb, acb); +#endif + return acb; +} + +static BlockDriverAIOCB *raw_aio_read(BlockDriverState *bs, + int64_t sector_num, uint8_t *buf, int nb_sectors, + BlockDriverCompletionFunc *cb, void *opaque) +{ + BDRVRawState *s = bs->opaque; + RawAIOCB *acb; + int ret; + + acb = raw_aio_setup(bs, sector_num, buf, nb_sectors, cb, opaque); + if (!acb) + return NULL; + ret = ReadFile(s->hfile, buf, acb->count, NULL, &acb->ov); + if (!ret) { + qemu_aio_release(acb); + return NULL; + } +#ifdef QEMU_IMG + qemu_aio_release(acb); +#endif + return (BlockDriverAIOCB *)acb; +} + +static BlockDriverAIOCB *raw_aio_write(BlockDriverState *bs, + int64_t sector_num, uint8_t *buf, int nb_sectors, + BlockDriverCompletionFunc *cb, void *opaque) +{ + BDRVRawState *s = bs->opaque; + RawAIOCB *acb; + int ret; + + acb = raw_aio_setup(bs, sector_num, buf, nb_sectors, cb, opaque); + if (!acb) + return NULL; + ret = WriteFile(s->hfile, buf, acb->count, NULL, &acb->ov); + if (!ret) { + qemu_aio_release(acb); + return NULL; + } +#ifdef QEMU_IMG + qemu_aio_release(acb); +#endif + return (BlockDriverAIOCB *)acb; +} + +static void raw_aio_cancel(BlockDriverAIOCB *blockacb) +{ +#ifndef QEMU_IMG + RawAIOCB *acb = (RawAIOCB *)blockacb; + BlockDriverState *bs = acb->common.bs; + BDRVRawState *s = bs->opaque; + + qemu_del_wait_object(acb->ov.hEvent, raw_aio_cb, acb); + /* XXX: if more than one async I/O it is not correct */ + CancelIo(s->hfile); + qemu_aio_release(acb); +#endif +} +#endif /* #if 0 */ + +static void raw_flush(BlockDriverState *bs) +{ + BDRVRawState *s = bs->opaque; + FlushFileBuffers(s->hfile); +} + +static void raw_close(BlockDriverState *bs) +{ + BDRVRawState *s = bs->opaque; + CloseHandle(s->hfile); +} + +static int raw_truncate(BlockDriverState *bs, int64_t offset) +{ + BDRVRawState *s = bs->opaque; + DWORD low, high; + + low = offset; + high = offset >> 32; + if (!SetFilePointer(s->hfile, low, &high, FILE_BEGIN)) + return -EIO; + if (!SetEndOfFile(s->hfile)) + return -EIO; + return 0; +} + +static int64_t raw_getlength(BlockDriverState *bs) +{ + BDRVRawState *s = bs->opaque; + LARGE_INTEGER l; + ULARGE_INTEGER available, total, total_free; + DISK_GEOMETRY_EX dg; + DWORD count; + BOOL status; + + switch(s->type) { + case FTYPE_FILE: + l.LowPart = GetFileSize(s->hfile, &l.HighPart); + if (l.LowPart == 0xffffffffUL && GetLastError() != NO_ERROR) + return -EIO; + break; + case FTYPE_CD: + if (!GetDiskFreeSpaceEx(s->drive_path, &available, &total, &total_free)) + return -EIO; + l.QuadPart = total.QuadPart; + break; + case FTYPE_HARDDISK: + status = DeviceIoControl(s->hfile, IOCTL_DISK_GET_DRIVE_GEOMETRY_EX, + NULL, 0, &dg, sizeof(dg), &count, NULL); + if (status != 0) { + l = dg.DiskSize; + } + break; + default: + return -EIO; + } + return l.QuadPart; +} + +static int raw_create(const char *filename, int64_t total_size, + const char *backing_file, int flags) +{ + int fd; + + if (flags || backing_file) + return -ENOTSUP; + + fd = open(filename, O_WRONLY | O_CREAT | O_TRUNC | O_BINARY, + 0644); + if (fd < 0) + return -EIO; + set_sparse(fd); + ftruncate(fd, total_size * 512); + close(fd); + return 0; +} + +void qemu_aio_init(void) +{ +} + +void qemu_aio_poll(void) +{ +} + +void qemu_aio_flush(void) +{ +} + +void qemu_aio_wait_start(void) +{ +} + +void qemu_aio_wait(void) +{ +#ifndef QEMU_IMG + qemu_bh_poll(); +#endif +} + +void qemu_aio_wait_end(void) +{ +} + +BlockDriver bdrv_raw = { + "raw", + sizeof(BDRVRawState), + NULL, /* no probe for protocols */ + raw_open, + NULL, + NULL, + raw_close, + raw_create, + raw_flush, + +#if 0 + .bdrv_aio_read = raw_aio_read, + .bdrv_aio_write = raw_aio_write, + .bdrv_aio_cancel = raw_aio_cancel, + .aiocb_size = sizeof(RawAIOCB); +#endif + .protocol_name = "file", + .bdrv_pread = raw_pread, + .bdrv_pwrite = raw_pwrite, + .bdrv_truncate = raw_truncate, + .bdrv_getlength = raw_getlength, +}; + +/***********************************************/ +/* host device */ + +static int find_cdrom(char *cdrom_name, int cdrom_name_size) +{ + char drives[256], *pdrv = drives; + UINT type; + + memset(drives, 0, sizeof(drives)); + GetLogicalDriveStrings(sizeof(drives), drives); + while(pdrv[0] != '\0') { + type = GetDriveType(pdrv); + switch(type) { + case DRIVE_CDROM: + snprintf(cdrom_name, cdrom_name_size, "\\\\.\\%c:", pdrv[0]); + return 0; + break; + } + pdrv += lstrlen(pdrv) + 1; + } + return -1; +} + +static int find_device_type(BlockDriverState *bs, const char *filename) +{ + BDRVRawState *s = bs->opaque; + UINT type; + const char *p; + + if (strstart(filename, "\\\\.\\", &p) || + strstart(filename, "//./", &p)) { + if (stristart(p, "PhysicalDrive", NULL)) + return FTYPE_HARDDISK; + snprintf(s->drive_path, sizeof(s->drive_path), "%c:\\", p[0]); + type = GetDriveType(s->drive_path); + if (type == DRIVE_CDROM) + return FTYPE_CD; + else + return FTYPE_FILE; + } else { + return FTYPE_FILE; + } +} + +static int hdev_open(BlockDriverState *bs, const char *filename, int flags) +{ + BDRVRawState *s = bs->opaque; + int access_flags, create_flags; + DWORD overlapped; + char device_name[64]; + + if (strstart(filename, "/dev/cdrom", NULL)) { + if (find_cdrom(device_name, sizeof(device_name)) < 0) + return -ENOENT; + filename = device_name; + } else { + /* transform drive letters into device name */ + if (((filename[0] >= 'a' && filename[0] <= 'z') || + (filename[0] >= 'A' && filename[0] <= 'Z')) && + filename[1] == ':' && filename[2] == '\0') { + snprintf(device_name, sizeof(device_name), "\\\\.\\%c:", filename[0]); + filename = device_name; + } + } + s->type = find_device_type(bs, filename); + + if ((flags & BDRV_O_ACCESS) == O_RDWR) { + access_flags = GENERIC_READ | GENERIC_WRITE; + } else { + access_flags = GENERIC_READ; + } + create_flags = OPEN_EXISTING; + +#ifdef QEMU_IMG + overlapped = FILE_ATTRIBUTE_NORMAL; +#else + overlapped = FILE_FLAG_OVERLAPPED; +#endif + s->hfile = CreateFile(filename, access_flags, + FILE_SHARE_READ, NULL, + create_flags, overlapped, NULL); + if (s->hfile == INVALID_HANDLE_VALUE) { + int err = GetLastError(); + + if (err == ERROR_ACCESS_DENIED) + return -EACCES; + return -1; + } + return 0; +} + +#if 0 +/***********************************************/ +/* removable device additional commands */ + +static int raw_is_inserted(BlockDriverState *bs) +{ + return 1; +} + +static int raw_media_changed(BlockDriverState *bs) +{ + return -ENOTSUP; +} + +static int raw_eject(BlockDriverState *bs, int eject_flag) +{ + DWORD ret_count; + + if (s->type == FTYPE_FILE) + return -ENOTSUP; + if (eject_flag) { + DeviceIoControl(s->hfile, IOCTL_STORAGE_EJECT_MEDIA, + NULL, 0, NULL, 0, &lpBytesReturned, NULL); + } else { + DeviceIoControl(s->hfile, IOCTL_STORAGE_LOAD_MEDIA, + NULL, 0, NULL, 0, &lpBytesReturned, NULL); + } +} + +static int raw_set_locked(BlockDriverState *bs, int locked) +{ + return -ENOTSUP; +} +#endif + +BlockDriver bdrv_host_device = { + "host_device", + sizeof(BDRVRawState), + NULL, /* no probe for protocols */ + hdev_open, + NULL, + NULL, + raw_close, + NULL, + raw_flush, + +#if 0 + .bdrv_aio_read = raw_aio_read, + .bdrv_aio_write = raw_aio_write, + .bdrv_aio_cancel = raw_aio_cancel, + .aiocb_size = sizeof(RawAIOCB); +#endif + .bdrv_pread = raw_pread, + .bdrv_pwrite = raw_pwrite, + .bdrv_getlength = raw_getlength, +}; |