Split block-raw.c into block-raw-posix.c and block-raw-win32.c, by
Anthony Liguori. git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@3814 c046a42c-6fe2-441c-8c8c-71466251a162
This commit is contained in:
ths
parent
50a9569b59
commit
223d4670a0
9
Makefile
9
Makefile
@ -119,9 +119,16 @@ libqemu_common.a: $(OBJS)
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rm -f $@
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$(AR) rcs $@ $(OBJS)
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QEMU_IMG_BLOCK_OBJS = $(BLOCK_OBJS)
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ifdef CONFIG_WIN32
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QEMU_IMG_BLOCK_OBJS += qemu-img-block-raw-win32.o
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else
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QEMU_IMG_BLOCK_OBJS += qemu-img-block-raw-posix.o
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endif
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######################################################################
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qemu-img$(EXESUF): qemu-img.o qemu-img-block.o qemu-img-block-raw.o $(BLOCK_OBJS)
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qemu-img$(EXESUF): qemu-img.o qemu-img-block.o $(QEMU_IMG_BLOCK_OBJS)
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$(CC) $(LDFLAGS) $(BASE_LDFLAGS) -o $@ $^ -lz $(LIBS)
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qemu-img-%.o: %.c
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@ -398,7 +398,11 @@ endif
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# must use static linking to avoid leaving stuff in virtual address space
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VL_OBJS=vl.o osdep.o monitor.o pci.o loader.o isa_mmio.o
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# XXX: suppress QEMU_TOOL tests
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VL_OBJS+=block-raw.o
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ifdef CONFIG_WIN32
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VL_OBJS+=block-raw-win32.o
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else
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VL_OBJS+=block-raw-posix.o
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endif
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ifdef CONFIG_ALSA
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LIBS += -lasound
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@ -1,5 +1,5 @@
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/*
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* Block driver for RAW files
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* Block driver for RAW files (posix)
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*
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* Copyright (c) 2006 Fabrice Bellard
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*
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@ -28,7 +28,6 @@
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#endif
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#include "block_int.h"
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#include <assert.h>
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#ifndef _WIN32
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#include <aio.h>
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#ifdef CONFIG_COCOA
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@ -900,522 +899,3 @@ BlockDriver bdrv_host_device = {
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.bdrv_eject = raw_eject,
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.bdrv_set_locked = raw_set_locked,
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};
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#else /* _WIN32 */
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/* XXX: use another file ? */
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#include <winioctl.h>
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#define FTYPE_FILE 0
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#define FTYPE_CD 1
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#define FTYPE_HARDDISK 2
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typedef struct BDRVRawState {
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HANDLE hfile;
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int type;
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char drive_path[16]; /* format: "d:\" */
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} BDRVRawState;
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typedef struct RawAIOCB {
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BlockDriverAIOCB common;
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HANDLE hEvent;
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OVERLAPPED ov;
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int count;
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} RawAIOCB;
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int qemu_ftruncate64(int fd, int64_t length)
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{
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LARGE_INTEGER li;
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LONG high;
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HANDLE h;
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BOOL res;
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if ((GetVersion() & 0x80000000UL) && (length >> 32) != 0)
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return -1;
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h = (HANDLE)_get_osfhandle(fd);
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/* get current position, ftruncate do not change position */
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li.HighPart = 0;
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li.LowPart = SetFilePointer (h, 0, &li.HighPart, FILE_CURRENT);
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if (li.LowPart == 0xffffffffUL && GetLastError() != NO_ERROR)
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return -1;
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high = length >> 32;
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if (!SetFilePointer(h, (DWORD) length, &high, FILE_BEGIN))
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return -1;
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res = SetEndOfFile(h);
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/* back to old position */
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SetFilePointer(h, li.LowPart, &li.HighPart, FILE_BEGIN);
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return res ? 0 : -1;
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}
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static int set_sparse(int fd)
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{
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DWORD returned;
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return (int) DeviceIoControl((HANDLE)_get_osfhandle(fd), FSCTL_SET_SPARSE,
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NULL, 0, NULL, 0, &returned, NULL);
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}
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static int raw_open(BlockDriverState *bs, const char *filename, int flags)
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{
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BDRVRawState *s = bs->opaque;
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int access_flags, create_flags;
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DWORD overlapped;
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s->type = FTYPE_FILE;
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if ((flags & BDRV_O_ACCESS) == O_RDWR) {
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access_flags = GENERIC_READ | GENERIC_WRITE;
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} else {
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access_flags = GENERIC_READ;
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}
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if (flags & BDRV_O_CREAT) {
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create_flags = CREATE_ALWAYS;
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} else {
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create_flags = OPEN_EXISTING;
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}
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#ifdef QEMU_IMG
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overlapped = FILE_ATTRIBUTE_NORMAL;
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#else
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overlapped = FILE_FLAG_OVERLAPPED;
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#endif
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s->hfile = CreateFile(filename, access_flags,
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FILE_SHARE_READ, NULL,
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create_flags, overlapped, NULL);
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if (s->hfile == INVALID_HANDLE_VALUE) {
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int err = GetLastError();
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if (err == ERROR_ACCESS_DENIED)
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return -EACCES;
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return -1;
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}
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return 0;
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}
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static int raw_pread(BlockDriverState *bs, int64_t offset,
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uint8_t *buf, int count)
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{
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BDRVRawState *s = bs->opaque;
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OVERLAPPED ov;
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DWORD ret_count;
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int ret;
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memset(&ov, 0, sizeof(ov));
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ov.Offset = offset;
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ov.OffsetHigh = offset >> 32;
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ret = ReadFile(s->hfile, buf, count, &ret_count, &ov);
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if (!ret) {
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ret = GetOverlappedResult(s->hfile, &ov, &ret_count, TRUE);
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if (!ret)
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return -EIO;
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else
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return ret_count;
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}
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return ret_count;
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}
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static int raw_pwrite(BlockDriverState *bs, int64_t offset,
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const uint8_t *buf, int count)
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{
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BDRVRawState *s = bs->opaque;
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OVERLAPPED ov;
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DWORD ret_count;
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int ret;
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memset(&ov, 0, sizeof(ov));
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ov.Offset = offset;
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ov.OffsetHigh = offset >> 32;
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ret = WriteFile(s->hfile, buf, count, &ret_count, &ov);
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if (!ret) {
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ret = GetOverlappedResult(s->hfile, &ov, &ret_count, TRUE);
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if (!ret)
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return -EIO;
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else
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return ret_count;
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}
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return ret_count;
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}
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#if 0
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#ifndef QEMU_IMG
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static void raw_aio_cb(void *opaque)
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{
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RawAIOCB *acb = opaque;
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BlockDriverState *bs = acb->common.bs;
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BDRVRawState *s = bs->opaque;
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DWORD ret_count;
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int ret;
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ret = GetOverlappedResult(s->hfile, &acb->ov, &ret_count, TRUE);
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if (!ret || ret_count != acb->count) {
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acb->common.cb(acb->common.opaque, -EIO);
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} else {
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acb->common.cb(acb->common.opaque, 0);
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}
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}
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#endif
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static RawAIOCB *raw_aio_setup(BlockDriverState *bs,
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int64_t sector_num, uint8_t *buf, int nb_sectors,
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BlockDriverCompletionFunc *cb, void *opaque)
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{
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RawAIOCB *acb;
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int64_t offset;
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acb = qemu_aio_get(bs, cb, opaque);
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if (acb->hEvent) {
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acb->hEvent = CreateEvent(NULL, TRUE, FALSE, NULL);
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if (!acb->hEvent) {
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qemu_aio_release(acb);
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return NULL;
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}
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}
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memset(&acb->ov, 0, sizeof(acb->ov));
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offset = sector_num * 512;
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acb->ov.Offset = offset;
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acb->ov.OffsetHigh = offset >> 32;
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acb->ov.hEvent = acb->hEvent;
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acb->count = nb_sectors * 512;
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#ifndef QEMU_IMG
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qemu_add_wait_object(acb->ov.hEvent, raw_aio_cb, acb);
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#endif
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return acb;
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}
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static BlockDriverAIOCB *raw_aio_read(BlockDriverState *bs,
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int64_t sector_num, uint8_t *buf, int nb_sectors,
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BlockDriverCompletionFunc *cb, void *opaque)
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{
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BDRVRawState *s = bs->opaque;
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RawAIOCB *acb;
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int ret;
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acb = raw_aio_setup(bs, sector_num, buf, nb_sectors, cb, opaque);
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if (!acb)
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return NULL;
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ret = ReadFile(s->hfile, buf, acb->count, NULL, &acb->ov);
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if (!ret) {
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qemu_aio_release(acb);
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return NULL;
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}
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#ifdef QEMU_IMG
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qemu_aio_release(acb);
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#endif
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return (BlockDriverAIOCB *)acb;
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}
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static BlockDriverAIOCB *raw_aio_write(BlockDriverState *bs,
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int64_t sector_num, uint8_t *buf, int nb_sectors,
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BlockDriverCompletionFunc *cb, void *opaque)
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{
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BDRVRawState *s = bs->opaque;
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RawAIOCB *acb;
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int ret;
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acb = raw_aio_setup(bs, sector_num, buf, nb_sectors, cb, opaque);
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if (!acb)
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return NULL;
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ret = WriteFile(s->hfile, buf, acb->count, NULL, &acb->ov);
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if (!ret) {
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qemu_aio_release(acb);
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return NULL;
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}
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#ifdef QEMU_IMG
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qemu_aio_release(acb);
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#endif
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return (BlockDriverAIOCB *)acb;
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}
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static void raw_aio_cancel(BlockDriverAIOCB *blockacb)
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{
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#ifndef QEMU_IMG
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RawAIOCB *acb = (RawAIOCB *)blockacb;
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BlockDriverState *bs = acb->common.bs;
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BDRVRawState *s = bs->opaque;
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qemu_del_wait_object(acb->ov.hEvent, raw_aio_cb, acb);
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/* XXX: if more than one async I/O it is not correct */
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CancelIo(s->hfile);
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qemu_aio_release(acb);
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#endif
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}
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#endif /* #if 0 */
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static void raw_flush(BlockDriverState *bs)
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{
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BDRVRawState *s = bs->opaque;
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FlushFileBuffers(s->hfile);
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}
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static void raw_close(BlockDriverState *bs)
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{
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BDRVRawState *s = bs->opaque;
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CloseHandle(s->hfile);
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}
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static int raw_truncate(BlockDriverState *bs, int64_t offset)
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{
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BDRVRawState *s = bs->opaque;
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DWORD low, high;
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low = offset;
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high = offset >> 32;
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if (!SetFilePointer(s->hfile, low, &high, FILE_BEGIN))
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return -EIO;
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if (!SetEndOfFile(s->hfile))
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return -EIO;
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return 0;
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}
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static int64_t raw_getlength(BlockDriverState *bs)
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{
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BDRVRawState *s = bs->opaque;
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LARGE_INTEGER l;
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ULARGE_INTEGER available, total, total_free;
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DISK_GEOMETRY_EX dg;
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DWORD count;
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BOOL status;
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switch(s->type) {
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case FTYPE_FILE:
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l.LowPart = GetFileSize(s->hfile, &l.HighPart);
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if (l.LowPart == 0xffffffffUL && GetLastError() != NO_ERROR)
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return -EIO;
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break;
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case FTYPE_CD:
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if (!GetDiskFreeSpaceEx(s->drive_path, &available, &total, &total_free))
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return -EIO;
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l.QuadPart = total.QuadPart;
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break;
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case FTYPE_HARDDISK:
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status = DeviceIoControl(s->hfile, IOCTL_DISK_GET_DRIVE_GEOMETRY_EX,
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NULL, 0, &dg, sizeof(dg), &count, NULL);
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if (status != 0) {
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l = dg.DiskSize;
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}
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break;
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default:
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return -EIO;
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}
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return l.QuadPart;
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}
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static int raw_create(const char *filename, int64_t total_size,
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const char *backing_file, int flags)
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{
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int fd;
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if (flags || backing_file)
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return -ENOTSUP;
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fd = open(filename, O_WRONLY | O_CREAT | O_TRUNC | O_BINARY,
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0644);
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if (fd < 0)
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return -EIO;
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set_sparse(fd);
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ftruncate(fd, total_size * 512);
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close(fd);
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return 0;
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}
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void qemu_aio_init(void)
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{
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}
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void qemu_aio_poll(void)
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{
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}
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void qemu_aio_flush(void)
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{
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}
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void qemu_aio_wait_start(void)
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{
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}
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void qemu_aio_wait(void)
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{
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#ifndef QEMU_IMG
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qemu_bh_poll();
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#endif
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}
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void qemu_aio_wait_end(void)
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{
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}
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BlockDriver bdrv_raw = {
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"raw",
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sizeof(BDRVRawState),
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NULL, /* no probe for protocols */
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raw_open,
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NULL,
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NULL,
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raw_close,
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raw_create,
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raw_flush,
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#if 0
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.bdrv_aio_read = raw_aio_read,
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.bdrv_aio_write = raw_aio_write,
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.bdrv_aio_cancel = raw_aio_cancel,
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.aiocb_size = sizeof(RawAIOCB);
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#endif
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.protocol_name = "file",
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.bdrv_pread = raw_pread,
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.bdrv_pwrite = raw_pwrite,
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.bdrv_truncate = raw_truncate,
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.bdrv_getlength = raw_getlength,
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};
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/***********************************************/
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/* host device */
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static int find_cdrom(char *cdrom_name, int cdrom_name_size)
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{
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char drives[256], *pdrv = drives;
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UINT type;
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memset(drives, 0, sizeof(drives));
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GetLogicalDriveStrings(sizeof(drives), drives);
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while(pdrv[0] != '\0') {
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type = GetDriveType(pdrv);
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switch(type) {
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case DRIVE_CDROM:
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snprintf(cdrom_name, cdrom_name_size, "\\\\.\\%c:", pdrv[0]);
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return 0;
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break;
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}
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pdrv += lstrlen(pdrv) + 1;
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}
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return -1;
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}
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static int find_device_type(BlockDriverState *bs, const char *filename)
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{
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BDRVRawState *s = bs->opaque;
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UINT type;
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const char *p;
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if (strstart(filename, "\\\\.\\", &p) ||
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strstart(filename, "//./", &p)) {
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if (stristart(p, "PhysicalDrive", NULL))
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return FTYPE_HARDDISK;
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snprintf(s->drive_path, sizeof(s->drive_path), "%c:\\", p[0]);
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type = GetDriveType(s->drive_path);
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if (type == DRIVE_CDROM)
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return FTYPE_CD;
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else
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return FTYPE_FILE;
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} else {
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return FTYPE_FILE;
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}
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}
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static int hdev_open(BlockDriverState *bs, const char *filename, int flags)
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{
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BDRVRawState *s = bs->opaque;
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int access_flags, create_flags;
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DWORD overlapped;
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char device_name[64];
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if (strstart(filename, "/dev/cdrom", NULL)) {
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if (find_cdrom(device_name, sizeof(device_name)) < 0)
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return -ENOENT;
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filename = device_name;
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} else {
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/* transform drive letters into device name */
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||||
if (((filename[0] >= 'a' && filename[0] <= 'z') ||
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(filename[0] >= 'A' && filename[0] <= 'Z')) &&
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filename[1] == ':' && filename[2] == '\0') {
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snprintf(device_name, sizeof(device_name), "\\\\.\\%c:", filename[0]);
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filename = device_name;
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}
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}
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s->type = find_device_type(bs, filename);
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||||
|
||||
if ((flags & BDRV_O_ACCESS) == O_RDWR) {
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||||
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 */
|
||||
544
block-raw-win32.c
Normal file
544
block-raw-win32.c
Normal file
@ -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,
|
||||
};
|
||||
Loading…
Reference in New Issue
Block a user