[Top][All Lists]
[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
[Qemu-devel] [PATCH] Split block-raw.c into block-raw-posix.c and block-
|
From: |
Anthony Liguori |
|
Subject: |
[Qemu-devel] [PATCH] Split block-raw.c into block-raw-posix.c and block-raw-win32.c |
|
Date: |
Thu, 06 Dec 2007 09:50:28 -0600 |
|
User-agent: |
Thunderbird 2.0.0.6 (X11/20071022) |
There's virtually no shared code between the two.
Regards,
Anthony Liguori
Index: qemu/Makefile.target
===================================================================
--- qemu.orig/Makefile.target 2007-12-06 09:42:31.000000000 -0600
+++ qemu/Makefile.target 2007-12-06 09:43:16.000000000 -0600
@@ -398,7 +398,11 @@
# 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
Index: qemu/block-raw-posix.c
===================================================================
--- /dev/null 1970-01-01 00:00:00.000000000 +0000
+++ qemu/block-raw-posix.c 2007-12-06 09:41:32.000000000 -0600
@@ -0,0 +1,901 @@
+/*
+ * Block driver for RAW files (posix)
+ *
+ * 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 <aio.h>
+
+#ifdef CONFIG_COCOA
+#include <paths.h>
+#include <sys/param.h>
+#include <IOKit/IOKitLib.h>
+#include <IOKit/IOBSD.h>
+#include <IOKit/storage/IOMediaBSDClient.h>
+#include <IOKit/storage/IOMedia.h>
+#include <IOKit/storage/IOCDMedia.h>
+//#include <IOKit/storage/IOCDTypes.h>
+#include <CoreFoundation/CoreFoundation.h>
+#endif
+
+#ifdef __sun__
+#define _POSIX_PTHREAD_SEMANTICS 1
+#include <signal.h>
+#include <sys/dkio.h>
+#endif
+#ifdef __linux__
+#include <sys/ioctl.h>
+#include <linux/cdrom.h>
+#include <linux/fd.h>
+#endif
+#ifdef __FreeBSD__
+#include <sys/disk.h>
+#endif
+
+//#define DEBUG_FLOPPY
+
+//#define DEBUG_BLOCK
+#if defined(DEBUG_BLOCK) && !defined(QEMU_IMG)
+#define DEBUG_BLOCK_PRINT(formatCstr, args...) do { if (loglevel != 0) \
+ { fprintf(logfile, formatCstr, ##args); fflush(logfile); } } while (0)
+#else
+#define DEBUG_BLOCK_PRINT(formatCstr, args...)
+#endif
+
+#define FTYPE_FILE 0
+#define FTYPE_CD 1
+#define FTYPE_FD 2
+
+/* if the FD is not accessed during that time (in ms), we try to
+ reopen it to see if the disk has been changed */
+#define FD_OPEN_TIMEOUT 1000
+
+typedef struct BDRVRawState {
+ int fd;
+ int type;
+ unsigned int lseek_err_cnt;
+#if defined(__linux__)
+ /* linux floppy specific */
+ int fd_open_flags;
+ int64_t fd_open_time;
+ int64_t fd_error_time;
+ int fd_got_error;
+ int fd_media_changed;
+#endif
+} BDRVRawState;
+
+static int fd_open(BlockDriverState *bs);
+
+static int raw_open(BlockDriverState *bs, const char *filename, int flags)
+{
+ BDRVRawState *s = bs->opaque;
+ int fd, open_flags, ret;
+
+ s->lseek_err_cnt = 0;
+
+ open_flags = O_BINARY;
+ if ((flags & BDRV_O_ACCESS) == O_RDWR) {
+ open_flags |= O_RDWR;
+ } else {
+ open_flags |= O_RDONLY;
+ bs->read_only = 1;
+ }
+ if (flags & BDRV_O_CREAT)
+ open_flags |= O_CREAT | O_TRUNC;
+
+ s->type = FTYPE_FILE;
+
+ fd = open(filename, open_flags, 0644);
+ if (fd < 0) {
+ ret = -errno;
+ if (ret == -EROFS)
+ ret = -EACCES;
+ return ret;
+ }
+ s->fd = fd;
+ return 0;
+}
+
+/* XXX: use host sector size if necessary with:
+#ifdef DIOCGSECTORSIZE
+ {
+ unsigned int sectorsize = 512;
+ if (!ioctl(fd, DIOCGSECTORSIZE, §orsize) &&
+ sectorsize > bufsize)
+ bufsize = sectorsize;
+ }
+#endif
+#ifdef CONFIG_COCOA
+ u_int32_t blockSize = 512;
+ if ( !ioctl( fd, DKIOCGETBLOCKSIZE, &blockSize ) && blockSize >
bufsize) {
+ bufsize = blockSize;
+ }
+#endif
+*/
+
+static int raw_pread(BlockDriverState *bs, int64_t offset,
+ uint8_t *buf, int count)
+{
+ BDRVRawState *s = bs->opaque;
+ int ret;
+
+ ret = fd_open(bs);
+ if (ret < 0)
+ return ret;
+
+ if (lseek(s->fd, offset, SEEK_SET) == (off_t)-1) {
+ ++(s->lseek_err_cnt);
+ if(s->lseek_err_cnt <= 10) {
+ DEBUG_BLOCK_PRINT("raw_pread(%d:%s, %" PRId64 ", %p, %d) [%" PRId64
+ "] lseek failed : %d = %s\n",
+ s->fd, bs->filename, offset, buf, count,
+ bs->total_sectors, errno, strerror(errno));
+ }
+ return -1;
+ }
+ s->lseek_err_cnt=0;
+
+ ret = read(s->fd, buf, count);
+ if (ret == count)
+ goto label__raw_read__success;
+
+ DEBUG_BLOCK_PRINT("raw_pread(%d:%s, %" PRId64 ", %p, %d) [%" PRId64
+ "] read failed %d : %d = %s\n",
+ s->fd, bs->filename, offset, buf, count,
+ bs->total_sectors, ret, errno, strerror(errno));
+
+ /* Try harder for CDrom. */
+ if (bs->type == BDRV_TYPE_CDROM) {
+ lseek(s->fd, offset, SEEK_SET);
+ ret = read(s->fd, buf, count);
+ if (ret == count)
+ goto label__raw_read__success;
+ lseek(s->fd, offset, SEEK_SET);
+ ret = read(s->fd, buf, count);
+ if (ret == count)
+ goto label__raw_read__success;
+
+ DEBUG_BLOCK_PRINT("raw_pread(%d:%s, %" PRId64 ", %p, %d) [%" PRId64
+ "] retry read failed %d : %d = %s\n",
+ s->fd, bs->filename, offset, buf, count,
+ bs->total_sectors, ret, errno, strerror(errno));
+ }
+
+label__raw_read__success:
+
+ return ret;
+}
+
+static int raw_pwrite(BlockDriverState *bs, int64_t offset,
+ const uint8_t *buf, int count)
+{
+ BDRVRawState *s = bs->opaque;
+ int ret;
+
+ ret = fd_open(bs);
+ if (ret < 0)
+ return ret;
+
+ if (lseek(s->fd, offset, SEEK_SET) == (off_t)-1) {
+ ++(s->lseek_err_cnt);
+ if(s->lseek_err_cnt) {
+ DEBUG_BLOCK_PRINT("raw_pwrite(%d:%s, %" PRId64 ", %p, %d) [%"
+ PRId64 "] lseek failed : %d = %s\n",
+ s->fd, bs->filename, offset, buf, count,
+ bs->total_sectors, errno, strerror(errno));
+ }
+ return -1;
+ }
+ s->lseek_err_cnt = 0;
+
+ ret = write(s->fd, buf, count);
+ if (ret == count)
+ goto label__raw_write__success;
+
+ DEBUG_BLOCK_PRINT("raw_pwrite(%d:%s, %" PRId64 ", %p, %d) [%" PRId64
+ "] write failed %d : %d = %s\n",
+ s->fd, bs->filename, offset, buf, count,
+ bs->total_sectors, ret, errno, strerror(errno));
+
+label__raw_write__success:
+
+ return ret;
+}
+
+/***********************************************************/
+/* Unix AIO using POSIX AIO */
+
+typedef struct RawAIOCB {
+ BlockDriverAIOCB common;
+ struct aiocb aiocb;
+ struct RawAIOCB *next;
+} RawAIOCB;
+
+static int aio_sig_num = SIGUSR2;
+static RawAIOCB *first_aio; /* AIO issued */
+static int aio_initialized = 0;
+
+static void aio_signal_handler(int signum)
+{
+#ifndef QEMU_IMG
+ CPUState *env = cpu_single_env;
+ if (env) {
+ /* stop the currently executing cpu because a timer occured */
+ cpu_interrupt(env, CPU_INTERRUPT_EXIT);
+#ifdef USE_KQEMU
+ if (env->kqemu_enabled) {
+ kqemu_cpu_interrupt(env);
+ }
+#endif
+ }
+#endif
+}
+
+void qemu_aio_init(void)
+{
+ struct sigaction act;
+
+ aio_initialized = 1;
+
+ sigfillset(&act.sa_mask);
+ act.sa_flags = 0; /* do not restart syscalls to interrupt select() */
+ act.sa_handler = aio_signal_handler;
+ sigaction(aio_sig_num, &act, NULL);
+
+#if defined(__GLIBC__) && defined(__linux__)
+ {
+ /* XXX: aio thread exit seems to hang on RedHat 9 and this init
+ seems to fix the problem. */
+ struct aioinit ai;
+ memset(&ai, 0, sizeof(ai));
+ ai.aio_threads = 1;
+ ai.aio_num = 1;
+ ai.aio_idle_time = 365 * 100000;
+ aio_init(&ai);
+ }
+#endif
+}
+
+void qemu_aio_poll(void)
+{
+ RawAIOCB *acb, **pacb;
+ int ret;
+
+ for(;;) {
+ pacb = &first_aio;
+ for(;;) {
+ acb = *pacb;
+ if (!acb)
+ goto the_end;
+ ret = aio_error(&acb->aiocb);
+ if (ret == ECANCELED) {
+ /* remove the request */
+ *pacb = acb->next;
+ qemu_aio_release(acb);
+ } else if (ret != EINPROGRESS) {
+ /* end of aio */
+ if (ret == 0) {
+ ret = aio_return(&acb->aiocb);
+ if (ret == acb->aiocb.aio_nbytes)
+ ret = 0;
+ else
+ ret = -EINVAL;
+ } else {
+ ret = -ret;
+ }
+ /* remove the request */
+ *pacb = acb->next;
+ /* call the callback */
+ acb->common.cb(acb->common.opaque, ret);
+ qemu_aio_release(acb);
+ break;
+ } else {
+ pacb = &acb->next;
+ }
+ }
+ }
+ the_end: ;
+}
+
+/* Wait for all IO requests to complete. */
+void qemu_aio_flush(void)
+{
+ qemu_aio_wait_start();
+ qemu_aio_poll();
+ while (first_aio) {
+ qemu_aio_wait();
+ }
+ qemu_aio_wait_end();
+}
+
+/* wait until at least one AIO was handled */
+static sigset_t wait_oset;
+
+void qemu_aio_wait_start(void)
+{
+ sigset_t set;
+
+ if (!aio_initialized)
+ qemu_aio_init();
+ sigemptyset(&set);
+ sigaddset(&set, aio_sig_num);
+ sigprocmask(SIG_BLOCK, &set, &wait_oset);
+}
+
+void qemu_aio_wait(void)
+{
+ sigset_t set;
+ int nb_sigs;
+
+#ifndef QEMU_IMG
+ if (qemu_bh_poll())
+ return;
+#endif
+ sigemptyset(&set);
+ sigaddset(&set, aio_sig_num);
+ sigwait(&set, &nb_sigs);
+ qemu_aio_poll();
+}
+
+void qemu_aio_wait_end(void)
+{
+ sigprocmask(SIG_SETMASK, &wait_oset, NULL);
+}
+
+static RawAIOCB *raw_aio_setup(BlockDriverState *bs,
+ int64_t sector_num, uint8_t *buf, int nb_sectors,
+ BlockDriverCompletionFunc *cb, void *opaque)
+{
+ BDRVRawState *s = bs->opaque;
+ RawAIOCB *acb;
+
+ if (fd_open(bs) < 0)
+ return NULL;
+
+ acb = qemu_aio_get(bs, cb, opaque);
+ if (!acb)
+ return NULL;
+ acb->aiocb.aio_fildes = s->fd;
+ acb->aiocb.aio_sigevent.sigev_signo = aio_sig_num;
+ acb->aiocb.aio_sigevent.sigev_notify = SIGEV_SIGNAL;
+ acb->aiocb.aio_buf = buf;
+ acb->aiocb.aio_nbytes = nb_sectors * 512;
+ acb->aiocb.aio_offset = sector_num * 512;
+ acb->next = first_aio;
+ first_aio = acb;
+ return acb;
+}
+
+static BlockDriverAIOCB *raw_aio_read(BlockDriverState *bs,
+ int64_t sector_num, uint8_t *buf, int nb_sectors,
+ BlockDriverCompletionFunc *cb, void *opaque)
+{
+ RawAIOCB *acb;
+
+ acb = raw_aio_setup(bs, sector_num, buf, nb_sectors, cb, opaque);
+ if (!acb)
+ return NULL;
+ if (aio_read(&acb->aiocb) < 0) {
+ qemu_aio_release(acb);
+ return NULL;
+ }
+ return &acb->common;
+}
+
+static BlockDriverAIOCB *raw_aio_write(BlockDriverState *bs,
+ int64_t sector_num, const uint8_t *buf, int nb_sectors,
+ BlockDriverCompletionFunc *cb, void *opaque)
+{
+ RawAIOCB *acb;
+
+ acb = raw_aio_setup(bs, sector_num, (uint8_t*)buf, nb_sectors, cb, opaque);
+ if (!acb)
+ return NULL;
+ if (aio_write(&acb->aiocb) < 0) {
+ qemu_aio_release(acb);
+ return NULL;
+ }
+ return &acb->common;
+}
+
+static void raw_aio_cancel(BlockDriverAIOCB *blockacb)
+{
+ int ret;
+ RawAIOCB *acb = (RawAIOCB *)blockacb;
+ RawAIOCB **pacb;
+
+ ret = aio_cancel(acb->aiocb.aio_fildes, &acb->aiocb);
+ if (ret == AIO_NOTCANCELED) {
+ /* fail safe: if the aio could not be canceled, we wait for
+ it */
+ while (aio_error(&acb->aiocb) == EINPROGRESS);
+ }
+
+ /* remove the callback from the queue */
+ pacb = &first_aio;
+ for(;;) {
+ if (*pacb == NULL) {
+ break;
+ } else if (*pacb == acb) {
+ *pacb = acb->next;
+ qemu_aio_release(acb);
+ break;
+ }
+ pacb = &acb->next;
+ }
+}
+
+static void raw_close(BlockDriverState *bs)
+{
+ BDRVRawState *s = bs->opaque;
+ if (s->fd >= 0) {
+ close(s->fd);
+ s->fd = -1;
+ }
+}
+
+static int raw_truncate(BlockDriverState *bs, int64_t offset)
+{
+ BDRVRawState *s = bs->opaque;
+ if (s->type != FTYPE_FILE)
+ return -ENOTSUP;
+ if (ftruncate(s->fd, offset) < 0)
+ return -errno;
+ return 0;
+}
+
+static int64_t raw_getlength(BlockDriverState *bs)
+{
+ BDRVRawState *s = bs->opaque;
+ int fd = s->fd;
+ int64_t size;
+#ifdef _BSD
+ struct stat sb;
+#endif
+#ifdef __sun__
+ struct dk_minfo minfo;
+ int rv;
+#endif
+ int ret;
+
+ ret = fd_open(bs);
+ if (ret < 0)
+ return ret;
+
+#ifdef _BSD
+ if (!fstat(fd, &sb) && (S_IFCHR & sb.st_mode)) {
+#ifdef DIOCGMEDIASIZE
+ if (ioctl(fd, DIOCGMEDIASIZE, (off_t *)&size))
+#endif
+#ifdef CONFIG_COCOA
+ size = LONG_LONG_MAX;
+#else
+ size = lseek(fd, 0LL, SEEK_END);
+#endif
+ } else
+#endif
+#ifdef __sun__
+ /*
+ * use the DKIOCGMEDIAINFO ioctl to read the size.
+ */
+ rv = ioctl ( fd, DKIOCGMEDIAINFO, &minfo );
+ if ( rv != -1 ) {
+ size = minfo.dki_lbsize * minfo.dki_capacity;
+ } else /* there are reports that lseek on some devices
+ fails, but irc discussion said that contingency
+ on contingency was overkill */
+#endif
+ {
+ size = lseek(fd, 0, SEEK_END);
+ }
+ return size;
+}
+
+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;
+ ftruncate(fd, total_size * 512);
+ close(fd);
+ return 0;
+}
+
+static void raw_flush(BlockDriverState *bs)
+{
+ BDRVRawState *s = bs->opaque;
+ fsync(s->fd);
+}
+
+BlockDriver bdrv_raw = {
+ "raw",
+ sizeof(BDRVRawState),
+ NULL, /* no probe for protocols */
+ raw_open,
+ NULL,
+ NULL,
+ raw_close,
+ raw_create,
+ raw_flush,
+
+ .bdrv_aio_read = raw_aio_read,
+ .bdrv_aio_write = raw_aio_write,
+ .bdrv_aio_cancel = raw_aio_cancel,
+ .aiocb_size = sizeof(RawAIOCB),
+ .protocol_name = "file",
+ .bdrv_pread = raw_pread,
+ .bdrv_pwrite = raw_pwrite,
+ .bdrv_truncate = raw_truncate,
+ .bdrv_getlength = raw_getlength,
+};
+
+/***********************************************/
+/* host device */
+
+#ifdef CONFIG_COCOA
+static kern_return_t FindEjectableCDMedia( io_iterator_t *mediaIterator );
+static kern_return_t GetBSDPath( io_iterator_t mediaIterator, char *bsdPath,
CFIndex maxPathSize );
+
+kern_return_t FindEjectableCDMedia( io_iterator_t *mediaIterator )
+{
+ kern_return_t kernResult;
+ mach_port_t masterPort;
+ CFMutableDictionaryRef classesToMatch;
+
+ kernResult = IOMasterPort( MACH_PORT_NULL, &masterPort );
+ if ( KERN_SUCCESS != kernResult ) {
+ printf( "IOMasterPort returned %d\n", kernResult );
+ }
+
+ classesToMatch = IOServiceMatching( kIOCDMediaClass );
+ if ( classesToMatch == NULL ) {
+ printf( "IOServiceMatching returned a NULL dictionary.\n" );
+ } else {
+ CFDictionarySetValue( classesToMatch, CFSTR( kIOMediaEjectableKey ),
kCFBooleanTrue );
+ }
+ kernResult = IOServiceGetMatchingServices( masterPort, classesToMatch,
mediaIterator );
+ if ( KERN_SUCCESS != kernResult )
+ {
+ printf( "IOServiceGetMatchingServices returned %d\n", kernResult );
+ }
+
+ return kernResult;
+}
+
+kern_return_t GetBSDPath( io_iterator_t mediaIterator, char *bsdPath, CFIndex
maxPathSize )
+{
+ io_object_t nextMedia;
+ kern_return_t kernResult = KERN_FAILURE;
+ *bsdPath = '\0';
+ nextMedia = IOIteratorNext( mediaIterator );
+ if ( nextMedia )
+ {
+ CFTypeRef bsdPathAsCFString;
+ bsdPathAsCFString = IORegistryEntryCreateCFProperty( nextMedia, CFSTR(
kIOBSDNameKey ), kCFAllocatorDefault, 0 );
+ if ( bsdPathAsCFString ) {
+ size_t devPathLength;
+ strcpy( bsdPath, _PATH_DEV );
+ strcat( bsdPath, "r" );
+ devPathLength = strlen( bsdPath );
+ if ( CFStringGetCString( bsdPathAsCFString, bsdPath +
devPathLength, maxPathSize - devPathLength, kCFStringEncodingASCII ) ) {
+ kernResult = KERN_SUCCESS;
+ }
+ CFRelease( bsdPathAsCFString );
+ }
+ IOObjectRelease( nextMedia );
+ }
+
+ return kernResult;
+}
+
+#endif
+
+static int hdev_open(BlockDriverState *bs, const char *filename, int flags)
+{
+ BDRVRawState *s = bs->opaque;
+ int fd, open_flags, ret;
+
+#ifdef CONFIG_COCOA
+ if (strstart(filename, "/dev/cdrom", NULL)) {
+ kern_return_t kernResult;
+ io_iterator_t mediaIterator;
+ char bsdPath[ MAXPATHLEN ];
+ int fd;
+
+ kernResult = FindEjectableCDMedia( &mediaIterator );
+ kernResult = GetBSDPath( mediaIterator, bsdPath, sizeof( bsdPath ) );
+
+ if ( bsdPath[ 0 ] != '\0' ) {
+ strcat(bsdPath,"s0");
+ /* some CDs don't have a partition 0 */
+ fd = open(bsdPath, O_RDONLY | O_BINARY | O_LARGEFILE);
+ if (fd < 0) {
+ bsdPath[strlen(bsdPath)-1] = '1';
+ } else {
+ close(fd);
+ }
+ filename = bsdPath;
+ }
+
+ if ( mediaIterator )
+ IOObjectRelease( mediaIterator );
+ }
+#endif
+ open_flags = O_BINARY;
+ if ((flags & BDRV_O_ACCESS) == O_RDWR) {
+ open_flags |= O_RDWR;
+ } else {
+ open_flags |= O_RDONLY;
+ bs->read_only = 1;
+ }
+
+ s->type = FTYPE_FILE;
+#if defined(__linux__)
+ if (strstart(filename, "/dev/cd", NULL)) {
+ /* open will not fail even if no CD is inserted */
+ open_flags |= O_NONBLOCK;
+ s->type = FTYPE_CD;
+ } else if (strstart(filename, "/dev/fd", NULL)) {
+ s->type = FTYPE_FD;
+ s->fd_open_flags = open_flags;
+ /* open will not fail even if no floppy is inserted */
+ open_flags |= O_NONBLOCK;
+ }
+#endif
+ fd = open(filename, open_flags, 0644);
+ if (fd < 0) {
+ ret = -errno;
+ if (ret == -EROFS)
+ ret = -EACCES;
+ return ret;
+ }
+ s->fd = fd;
+#if defined(__linux__)
+ /* close fd so that we can reopen it as needed */
+ if (s->type == FTYPE_FD) {
+ close(s->fd);
+ s->fd = -1;
+ s->fd_media_changed = 1;
+ }
+#endif
+ return 0;
+}
+
+#if defined(__linux__) && !defined(QEMU_IMG)
+
+/* Note: we do not have a reliable method to detect if the floppy is
+ present. The current method is to try to open the floppy at every
+ I/O and to keep it opened during a few hundreds of ms. */
+static int fd_open(BlockDriverState *bs)
+{
+ BDRVRawState *s = bs->opaque;
+ int last_media_present;
+
+ if (s->type != FTYPE_FD)
+ return 0;
+ last_media_present = (s->fd >= 0);
+ if (s->fd >= 0 &&
+ (qemu_get_clock(rt_clock) - s->fd_open_time) >= FD_OPEN_TIMEOUT) {
+ close(s->fd);
+ s->fd = -1;
+#ifdef DEBUG_FLOPPY
+ printf("Floppy closed\n");
+#endif
+ }
+ if (s->fd < 0) {
+ if (s->fd_got_error &&
+ (qemu_get_clock(rt_clock) - s->fd_error_time) < FD_OPEN_TIMEOUT) {
+#ifdef DEBUG_FLOPPY
+ printf("No floppy (open delayed)\n");
+#endif
+ return -EIO;
+ }
+ s->fd = open(bs->filename, s->fd_open_flags);
+ if (s->fd < 0) {
+ s->fd_error_time = qemu_get_clock(rt_clock);
+ s->fd_got_error = 1;
+ if (last_media_present)
+ s->fd_media_changed = 1;
+#ifdef DEBUG_FLOPPY
+ printf("No floppy\n");
+#endif
+ return -EIO;
+ }
+#ifdef DEBUG_FLOPPY
+ printf("Floppy opened\n");
+#endif
+ }
+ if (!last_media_present)
+ s->fd_media_changed = 1;
+ s->fd_open_time = qemu_get_clock(rt_clock);
+ s->fd_got_error = 0;
+ return 0;
+}
+#else
+static int fd_open(BlockDriverState *bs)
+{
+ return 0;
+}
+#endif
+
+#if defined(__linux__)
+
+static int raw_is_inserted(BlockDriverState *bs)
+{
+ BDRVRawState *s = bs->opaque;
+ int ret;
+
+ switch(s->type) {
+ case FTYPE_CD:
+ ret = ioctl(s->fd, CDROM_DRIVE_STATUS, CDSL_CURRENT);
+ if (ret == CDS_DISC_OK)
+ return 1;
+ else
+ return 0;
+ break;
+ case FTYPE_FD:
+ ret = fd_open(bs);
+ return (ret >= 0);
+ default:
+ return 1;
+ }
+}
+
+/* currently only used by fdc.c, but a CD version would be good too */
+static int raw_media_changed(BlockDriverState *bs)
+{
+ BDRVRawState *s = bs->opaque;
+
+ switch(s->type) {
+ case FTYPE_FD:
+ {
+ int ret;
+ /* XXX: we do not have a true media changed indication. It
+ does not work if the floppy is changed without trying
+ to read it */
+ fd_open(bs);
+ ret = s->fd_media_changed;
+ s->fd_media_changed = 0;
+#ifdef DEBUG_FLOPPY
+ printf("Floppy changed=%d\n", ret);
+#endif
+ return ret;
+ }
+ default:
+ return -ENOTSUP;
+ }
+}
+
+static int raw_eject(BlockDriverState *bs, int eject_flag)
+{
+ BDRVRawState *s = bs->opaque;
+
+ switch(s->type) {
+ case FTYPE_CD:
+ if (eject_flag) {
+ if (ioctl (s->fd, CDROMEJECT, NULL) < 0)
+ perror("CDROMEJECT");
+ } else {
+ if (ioctl (s->fd, CDROMCLOSETRAY, NULL) < 0)
+ perror("CDROMEJECT");
+ }
+ break;
+ case FTYPE_FD:
+ {
+ int fd;
+ if (s->fd >= 0) {
+ close(s->fd);
+ s->fd = -1;
+ }
+ fd = open(bs->filename, s->fd_open_flags | O_NONBLOCK);
+ if (fd >= 0) {
+ if (ioctl(fd, FDEJECT, 0) < 0)
+ perror("FDEJECT");
+ close(fd);
+ }
+ }
+ break;
+ default:
+ return -ENOTSUP;
+ }
+ return 0;
+}
+
+static int raw_set_locked(BlockDriverState *bs, int locked)
+{
+ BDRVRawState *s = bs->opaque;
+
+ switch(s->type) {
+ case FTYPE_CD:
+ if (ioctl (s->fd, CDROM_LOCKDOOR, locked) < 0) {
+ /* Note: an error can happen if the distribution automatically
+ mounts the CD-ROM */
+ // perror("CDROM_LOCKDOOR");
+ }
+ break;
+ default:
+ return -ENOTSUP;
+ }
+ return 0;
+}
+
+#else
+
+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)
+{
+ return -ENOTSUP;
+}
+
+static int raw_set_locked(BlockDriverState *bs, int locked)
+{
+ return -ENOTSUP;
+}
+
+#endif /* !linux */
+
+BlockDriver bdrv_host_device = {
+ "host_device",
+ sizeof(BDRVRawState),
+ NULL, /* no probe for protocols */
+ hdev_open,
+ NULL,
+ NULL,
+ raw_close,
+ NULL,
+ raw_flush,
+
+ .bdrv_aio_read = raw_aio_read,
+ .bdrv_aio_write = raw_aio_write,
+ .bdrv_aio_cancel = raw_aio_cancel,
+ .aiocb_size = sizeof(RawAIOCB),
+ .bdrv_pread = raw_pread,
+ .bdrv_pwrite = raw_pwrite,
+ .bdrv_getlength = raw_getlength,
+
+ /* removable device support */
+ .bdrv_is_inserted = raw_is_inserted,
+ .bdrv_media_changed = raw_media_changed,
+ .bdrv_eject = raw_eject,
+ .bdrv_set_locked = raw_set_locked,
+};
Index: qemu/block-raw-win32.c
===================================================================
--- /dev/null 1970-01-01 00:00:00.000000000 +0000
+++ qemu/block-raw-win32.c 2007-12-06 09:41:17.000000000 -0600
@@ -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,
+};
Index: qemu/block-raw.c
===================================================================
--- qemu.orig/block-raw.c 2007-12-06 09:39:30.000000000 -0600
+++ /dev/null 1970-01-01 00:00:00.000000000 +0000
@@ -1,1421 +0,0 @@
-/*
- * Block driver for RAW files
- *
- * 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>
-#ifndef _WIN32
-#include <aio.h>
-
-#ifdef CONFIG_COCOA
-#include <paths.h>
-#include <sys/param.h>
-#include <IOKit/IOKitLib.h>
-#include <IOKit/IOBSD.h>
-#include <IOKit/storage/IOMediaBSDClient.h>
-#include <IOKit/storage/IOMedia.h>
-#include <IOKit/storage/IOCDMedia.h>
-//#include <IOKit/storage/IOCDTypes.h>
-#include <CoreFoundation/CoreFoundation.h>
-#endif
-
-#ifdef __sun__
-#define _POSIX_PTHREAD_SEMANTICS 1
-#include <signal.h>
-#include <sys/dkio.h>
-#endif
-#ifdef __linux__
-#include <sys/ioctl.h>
-#include <linux/cdrom.h>
-#include <linux/fd.h>
-#endif
-#ifdef __FreeBSD__
-#include <sys/disk.h>
-#endif
-
-//#define DEBUG_FLOPPY
-
-//#define DEBUG_BLOCK
-#if defined(DEBUG_BLOCK) && !defined(QEMU_IMG)
-#define DEBUG_BLOCK_PRINT(formatCstr, args...) do { if (loglevel != 0) \
- { fprintf(logfile, formatCstr, ##args); fflush(logfile); } } while (0)
-#else
-#define DEBUG_BLOCK_PRINT(formatCstr, args...)
-#endif
-
-#define FTYPE_FILE 0
-#define FTYPE_CD 1
-#define FTYPE_FD 2
-
-/* if the FD is not accessed during that time (in ms), we try to
- reopen it to see if the disk has been changed */
-#define FD_OPEN_TIMEOUT 1000
-
-typedef struct BDRVRawState {
- int fd;
- int type;
- unsigned int lseek_err_cnt;
-#if defined(__linux__)
- /* linux floppy specific */
- int fd_open_flags;
- int64_t fd_open_time;
- int64_t fd_error_time;
- int fd_got_error;
- int fd_media_changed;
-#endif
-} BDRVRawState;
-
-static int fd_open(BlockDriverState *bs);
-
-static int raw_open(BlockDriverState *bs, const char *filename, int flags)
-{
- BDRVRawState *s = bs->opaque;
- int fd, open_flags, ret;
-
- s->lseek_err_cnt = 0;
-
- open_flags = O_BINARY;
- if ((flags & BDRV_O_ACCESS) == O_RDWR) {
- open_flags |= O_RDWR;
- } else {
- open_flags |= O_RDONLY;
- bs->read_only = 1;
- }
- if (flags & BDRV_O_CREAT)
- open_flags |= O_CREAT | O_TRUNC;
-
- s->type = FTYPE_FILE;
-
- fd = open(filename, open_flags, 0644);
- if (fd < 0) {
- ret = -errno;
- if (ret == -EROFS)
- ret = -EACCES;
- return ret;
- }
- s->fd = fd;
- return 0;
-}
-
-/* XXX: use host sector size if necessary with:
-#ifdef DIOCGSECTORSIZE
- {
- unsigned int sectorsize = 512;
- if (!ioctl(fd, DIOCGSECTORSIZE, §orsize) &&
- sectorsize > bufsize)
- bufsize = sectorsize;
- }
-#endif
-#ifdef CONFIG_COCOA
- u_int32_t blockSize = 512;
- if ( !ioctl( fd, DKIOCGETBLOCKSIZE, &blockSize ) && blockSize >
bufsize) {
- bufsize = blockSize;
- }
-#endif
-*/
-
-static int raw_pread(BlockDriverState *bs, int64_t offset,
- uint8_t *buf, int count)
-{
- BDRVRawState *s = bs->opaque;
- int ret;
-
- ret = fd_open(bs);
- if (ret < 0)
- return ret;
-
- if (lseek(s->fd, offset, SEEK_SET) == (off_t)-1) {
- ++(s->lseek_err_cnt);
- if(s->lseek_err_cnt <= 10) {
- DEBUG_BLOCK_PRINT("raw_pread(%d:%s, %" PRId64 ", %p, %d) [%" PRId64
- "] lseek failed : %d = %s\n",
- s->fd, bs->filename, offset, buf, count,
- bs->total_sectors, errno, strerror(errno));
- }
- return -1;
- }
- s->lseek_err_cnt=0;
-
- ret = read(s->fd, buf, count);
- if (ret == count)
- goto label__raw_read__success;
-
- DEBUG_BLOCK_PRINT("raw_pread(%d:%s, %" PRId64 ", %p, %d) [%" PRId64
- "] read failed %d : %d = %s\n",
- s->fd, bs->filename, offset, buf, count,
- bs->total_sectors, ret, errno, strerror(errno));
-
- /* Try harder for CDrom. */
- if (bs->type == BDRV_TYPE_CDROM) {
- lseek(s->fd, offset, SEEK_SET);
- ret = read(s->fd, buf, count);
- if (ret == count)
- goto label__raw_read__success;
- lseek(s->fd, offset, SEEK_SET);
- ret = read(s->fd, buf, count);
- if (ret == count)
- goto label__raw_read__success;
-
- DEBUG_BLOCK_PRINT("raw_pread(%d:%s, %" PRId64 ", %p, %d) [%" PRId64
- "] retry read failed %d : %d = %s\n",
- s->fd, bs->filename, offset, buf, count,
- bs->total_sectors, ret, errno, strerror(errno));
- }
-
-label__raw_read__success:
-
- return ret;
-}
-
-static int raw_pwrite(BlockDriverState *bs, int64_t offset,
- const uint8_t *buf, int count)
-{
- BDRVRawState *s = bs->opaque;
- int ret;
-
- ret = fd_open(bs);
- if (ret < 0)
- return ret;
-
- if (lseek(s->fd, offset, SEEK_SET) == (off_t)-1) {
- ++(s->lseek_err_cnt);
- if(s->lseek_err_cnt) {
- DEBUG_BLOCK_PRINT("raw_pwrite(%d:%s, %" PRId64 ", %p, %d) [%"
- PRId64 "] lseek failed : %d = %s\n",
- s->fd, bs->filename, offset, buf, count,
- bs->total_sectors, errno, strerror(errno));
- }
- return -1;
- }
- s->lseek_err_cnt = 0;
-
- ret = write(s->fd, buf, count);
- if (ret == count)
- goto label__raw_write__success;
-
- DEBUG_BLOCK_PRINT("raw_pwrite(%d:%s, %" PRId64 ", %p, %d) [%" PRId64
- "] write failed %d : %d = %s\n",
- s->fd, bs->filename, offset, buf, count,
- bs->total_sectors, ret, errno, strerror(errno));
-
-label__raw_write__success:
-
- return ret;
-}
-
-/***********************************************************/
-/* Unix AIO using POSIX AIO */
-
-typedef struct RawAIOCB {
- BlockDriverAIOCB common;
- struct aiocb aiocb;
- struct RawAIOCB *next;
-} RawAIOCB;
-
-static int aio_sig_num = SIGUSR2;
-static RawAIOCB *first_aio; /* AIO issued */
-static int aio_initialized = 0;
-
-static void aio_signal_handler(int signum)
-{
-#ifndef QEMU_IMG
- CPUState *env = cpu_single_env;
- if (env) {
- /* stop the currently executing cpu because a timer occured */
- cpu_interrupt(env, CPU_INTERRUPT_EXIT);
-#ifdef USE_KQEMU
- if (env->kqemu_enabled) {
- kqemu_cpu_interrupt(env);
- }
-#endif
- }
-#endif
-}
-
-void qemu_aio_init(void)
-{
- struct sigaction act;
-
- aio_initialized = 1;
-
- sigfillset(&act.sa_mask);
- act.sa_flags = 0; /* do not restart syscalls to interrupt select() */
- act.sa_handler = aio_signal_handler;
- sigaction(aio_sig_num, &act, NULL);
-
-#if defined(__GLIBC__) && defined(__linux__)
- {
- /* XXX: aio thread exit seems to hang on RedHat 9 and this init
- seems to fix the problem. */
- struct aioinit ai;
- memset(&ai, 0, sizeof(ai));
- ai.aio_threads = 1;
- ai.aio_num = 1;
- ai.aio_idle_time = 365 * 100000;
- aio_init(&ai);
- }
-#endif
-}
-
-void qemu_aio_poll(void)
-{
- RawAIOCB *acb, **pacb;
- int ret;
-
- for(;;) {
- pacb = &first_aio;
- for(;;) {
- acb = *pacb;
- if (!acb)
- goto the_end;
- ret = aio_error(&acb->aiocb);
- if (ret == ECANCELED) {
- /* remove the request */
- *pacb = acb->next;
- qemu_aio_release(acb);
- } else if (ret != EINPROGRESS) {
- /* end of aio */
- if (ret == 0) {
- ret = aio_return(&acb->aiocb);
- if (ret == acb->aiocb.aio_nbytes)
- ret = 0;
- else
- ret = -EINVAL;
- } else {
- ret = -ret;
- }
- /* remove the request */
- *pacb = acb->next;
- /* call the callback */
- acb->common.cb(acb->common.opaque, ret);
- qemu_aio_release(acb);
- break;
- } else {
- pacb = &acb->next;
- }
- }
- }
- the_end: ;
-}
-
-/* Wait for all IO requests to complete. */
-void qemu_aio_flush(void)
-{
- qemu_aio_wait_start();
- qemu_aio_poll();
- while (first_aio) {
- qemu_aio_wait();
- }
- qemu_aio_wait_end();
-}
-
-/* wait until at least one AIO was handled */
-static sigset_t wait_oset;
-
-void qemu_aio_wait_start(void)
-{
- sigset_t set;
-
- if (!aio_initialized)
- qemu_aio_init();
- sigemptyset(&set);
- sigaddset(&set, aio_sig_num);
- sigprocmask(SIG_BLOCK, &set, &wait_oset);
-}
-
-void qemu_aio_wait(void)
-{
- sigset_t set;
- int nb_sigs;
-
-#ifndef QEMU_IMG
- if (qemu_bh_poll())
- return;
-#endif
- sigemptyset(&set);
- sigaddset(&set, aio_sig_num);
- sigwait(&set, &nb_sigs);
- qemu_aio_poll();
-}
-
-void qemu_aio_wait_end(void)
-{
- sigprocmask(SIG_SETMASK, &wait_oset, NULL);
-}
-
-static RawAIOCB *raw_aio_setup(BlockDriverState *bs,
- int64_t sector_num, uint8_t *buf, int nb_sectors,
- BlockDriverCompletionFunc *cb, void *opaque)
-{
- BDRVRawState *s = bs->opaque;
- RawAIOCB *acb;
-
- if (fd_open(bs) < 0)
- return NULL;
-
- acb = qemu_aio_get(bs, cb, opaque);
- if (!acb)
- return NULL;
- acb->aiocb.aio_fildes = s->fd;
- acb->aiocb.aio_sigevent.sigev_signo = aio_sig_num;
- acb->aiocb.aio_sigevent.sigev_notify = SIGEV_SIGNAL;
- acb->aiocb.aio_buf = buf;
- acb->aiocb.aio_nbytes = nb_sectors * 512;
- acb->aiocb.aio_offset = sector_num * 512;
- acb->next = first_aio;
- first_aio = acb;
- return acb;
-}
-
-static BlockDriverAIOCB *raw_aio_read(BlockDriverState *bs,
- int64_t sector_num, uint8_t *buf, int nb_sectors,
- BlockDriverCompletionFunc *cb, void *opaque)
-{
- RawAIOCB *acb;
-
- acb = raw_aio_setup(bs, sector_num, buf, nb_sectors, cb, opaque);
- if (!acb)
- return NULL;
- if (aio_read(&acb->aiocb) < 0) {
- qemu_aio_release(acb);
- return NULL;
- }
- return &acb->common;
-}
-
-static BlockDriverAIOCB *raw_aio_write(BlockDriverState *bs,
- int64_t sector_num, const uint8_t *buf, int nb_sectors,
- BlockDriverCompletionFunc *cb, void *opaque)
-{
- RawAIOCB *acb;
-
- acb = raw_aio_setup(bs, sector_num, (uint8_t*)buf, nb_sectors, cb, opaque);
- if (!acb)
- return NULL;
- if (aio_write(&acb->aiocb) < 0) {
- qemu_aio_release(acb);
- return NULL;
- }
- return &acb->common;
-}
-
-static void raw_aio_cancel(BlockDriverAIOCB *blockacb)
-{
- int ret;
- RawAIOCB *acb = (RawAIOCB *)blockacb;
- RawAIOCB **pacb;
-
- ret = aio_cancel(acb->aiocb.aio_fildes, &acb->aiocb);
- if (ret == AIO_NOTCANCELED) {
- /* fail safe: if the aio could not be canceled, we wait for
- it */
- while (aio_error(&acb->aiocb) == EINPROGRESS);
- }
-
- /* remove the callback from the queue */
- pacb = &first_aio;
- for(;;) {
- if (*pacb == NULL) {
- break;
- } else if (*pacb == acb) {
- *pacb = acb->next;
- qemu_aio_release(acb);
- break;
- }
- pacb = &acb->next;
- }
-}
-
-static void raw_close(BlockDriverState *bs)
-{
- BDRVRawState *s = bs->opaque;
- if (s->fd >= 0) {
- close(s->fd);
- s->fd = -1;
- }
-}
-
-static int raw_truncate(BlockDriverState *bs, int64_t offset)
-{
- BDRVRawState *s = bs->opaque;
- if (s->type != FTYPE_FILE)
- return -ENOTSUP;
- if (ftruncate(s->fd, offset) < 0)
- return -errno;
- return 0;
-}
-
-static int64_t raw_getlength(BlockDriverState *bs)
-{
- BDRVRawState *s = bs->opaque;
- int fd = s->fd;
- int64_t size;
-#ifdef _BSD
- struct stat sb;
-#endif
-#ifdef __sun__
- struct dk_minfo minfo;
- int rv;
-#endif
- int ret;
-
- ret = fd_open(bs);
- if (ret < 0)
- return ret;
-
-#ifdef _BSD
- if (!fstat(fd, &sb) && (S_IFCHR & sb.st_mode)) {
-#ifdef DIOCGMEDIASIZE
- if (ioctl(fd, DIOCGMEDIASIZE, (off_t *)&size))
-#endif
-#ifdef CONFIG_COCOA
- size = LONG_LONG_MAX;
-#else
- size = lseek(fd, 0LL, SEEK_END);
-#endif
- } else
-#endif
-#ifdef __sun__
- /*
- * use the DKIOCGMEDIAINFO ioctl to read the size.
- */
- rv = ioctl ( fd, DKIOCGMEDIAINFO, &minfo );
- if ( rv != -1 ) {
- size = minfo.dki_lbsize * minfo.dki_capacity;
- } else /* there are reports that lseek on some devices
- fails, but irc discussion said that contingency
- on contingency was overkill */
-#endif
- {
- size = lseek(fd, 0, SEEK_END);
- }
- return size;
-}
-
-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;
- ftruncate(fd, total_size * 512);
- close(fd);
- return 0;
-}
-
-static void raw_flush(BlockDriverState *bs)
-{
- BDRVRawState *s = bs->opaque;
- fsync(s->fd);
-}
-
-BlockDriver bdrv_raw = {
- "raw",
- sizeof(BDRVRawState),
- NULL, /* no probe for protocols */
- raw_open,
- NULL,
- NULL,
- raw_close,
- raw_create,
- raw_flush,
-
- .bdrv_aio_read = raw_aio_read,
- .bdrv_aio_write = raw_aio_write,
- .bdrv_aio_cancel = raw_aio_cancel,
- .aiocb_size = sizeof(RawAIOCB),
- .protocol_name = "file",
- .bdrv_pread = raw_pread,
- .bdrv_pwrite = raw_pwrite,
- .bdrv_truncate = raw_truncate,
- .bdrv_getlength = raw_getlength,
-};
-
-/***********************************************/
-/* host device */
-
-#ifdef CONFIG_COCOA
-static kern_return_t FindEjectableCDMedia( io_iterator_t *mediaIterator );
-static kern_return_t GetBSDPath( io_iterator_t mediaIterator, char *bsdPath,
CFIndex maxPathSize );
-
-kern_return_t FindEjectableCDMedia( io_iterator_t *mediaIterator )
-{
- kern_return_t kernResult;
- mach_port_t masterPort;
- CFMutableDictionaryRef classesToMatch;
-
- kernResult = IOMasterPort( MACH_PORT_NULL, &masterPort );
- if ( KERN_SUCCESS != kernResult ) {
- printf( "IOMasterPort returned %d\n", kernResult );
- }
-
- classesToMatch = IOServiceMatching( kIOCDMediaClass );
- if ( classesToMatch == NULL ) {
- printf( "IOServiceMatching returned a NULL dictionary.\n" );
- } else {
- CFDictionarySetValue( classesToMatch, CFSTR( kIOMediaEjectableKey ),
kCFBooleanTrue );
- }
- kernResult = IOServiceGetMatchingServices( masterPort, classesToMatch,
mediaIterator );
- if ( KERN_SUCCESS != kernResult )
- {
- printf( "IOServiceGetMatchingServices returned %d\n", kernResult );
- }
-
- return kernResult;
-}
-
-kern_return_t GetBSDPath( io_iterator_t mediaIterator, char *bsdPath, CFIndex
maxPathSize )
-{
- io_object_t nextMedia;
- kern_return_t kernResult = KERN_FAILURE;
- *bsdPath = '\0';
- nextMedia = IOIteratorNext( mediaIterator );
- if ( nextMedia )
- {
- CFTypeRef bsdPathAsCFString;
- bsdPathAsCFString = IORegistryEntryCreateCFProperty( nextMedia, CFSTR(
kIOBSDNameKey ), kCFAllocatorDefault, 0 );
- if ( bsdPathAsCFString ) {
- size_t devPathLength;
- strcpy( bsdPath, _PATH_DEV );
- strcat( bsdPath, "r" );
- devPathLength = strlen( bsdPath );
- if ( CFStringGetCString( bsdPathAsCFString, bsdPath +
devPathLength, maxPathSize - devPathLength, kCFStringEncodingASCII ) ) {
- kernResult = KERN_SUCCESS;
- }
- CFRelease( bsdPathAsCFString );
- }
- IOObjectRelease( nextMedia );
- }
-
- return kernResult;
-}
-
-#endif
-
-static int hdev_open(BlockDriverState *bs, const char *filename, int flags)
-{
- BDRVRawState *s = bs->opaque;
- int fd, open_flags, ret;
-
-#ifdef CONFIG_COCOA
- if (strstart(filename, "/dev/cdrom", NULL)) {
- kern_return_t kernResult;
- io_iterator_t mediaIterator;
- char bsdPath[ MAXPATHLEN ];
- int fd;
-
- kernResult = FindEjectableCDMedia( &mediaIterator );
- kernResult = GetBSDPath( mediaIterator, bsdPath, sizeof( bsdPath ) );
-
- if ( bsdPath[ 0 ] != '\0' ) {
- strcat(bsdPath,"s0");
- /* some CDs don't have a partition 0 */
- fd = open(bsdPath, O_RDONLY | O_BINARY | O_LARGEFILE);
- if (fd < 0) {
- bsdPath[strlen(bsdPath)-1] = '1';
- } else {
- close(fd);
- }
- filename = bsdPath;
- }
-
- if ( mediaIterator )
- IOObjectRelease( mediaIterator );
- }
-#endif
- open_flags = O_BINARY;
- if ((flags & BDRV_O_ACCESS) == O_RDWR) {
- open_flags |= O_RDWR;
- } else {
- open_flags |= O_RDONLY;
- bs->read_only = 1;
- }
-
- s->type = FTYPE_FILE;
-#if defined(__linux__)
- if (strstart(filename, "/dev/cd", NULL)) {
- /* open will not fail even if no CD is inserted */
- open_flags |= O_NONBLOCK;
- s->type = FTYPE_CD;
- } else if (strstart(filename, "/dev/fd", NULL)) {
- s->type = FTYPE_FD;
- s->fd_open_flags = open_flags;
- /* open will not fail even if no floppy is inserted */
- open_flags |= O_NONBLOCK;
- }
-#endif
- fd = open(filename, open_flags, 0644);
- if (fd < 0) {
- ret = -errno;
- if (ret == -EROFS)
- ret = -EACCES;
- return ret;
- }
- s->fd = fd;
-#if defined(__linux__)
- /* close fd so that we can reopen it as needed */
- if (s->type == FTYPE_FD) {
- close(s->fd);
- s->fd = -1;
- s->fd_media_changed = 1;
- }
-#endif
- return 0;
-}
-
-#if defined(__linux__) && !defined(QEMU_IMG)
-
-/* Note: we do not have a reliable method to detect if the floppy is
- present. The current method is to try to open the floppy at every
- I/O and to keep it opened during a few hundreds of ms. */
-static int fd_open(BlockDriverState *bs)
-{
- BDRVRawState *s = bs->opaque;
- int last_media_present;
-
- if (s->type != FTYPE_FD)
- return 0;
- last_media_present = (s->fd >= 0);
- if (s->fd >= 0 &&
- (qemu_get_clock(rt_clock) - s->fd_open_time) >= FD_OPEN_TIMEOUT) {
- close(s->fd);
- s->fd = -1;
-#ifdef DEBUG_FLOPPY
- printf("Floppy closed\n");
-#endif
- }
- if (s->fd < 0) {
- if (s->fd_got_error &&
- (qemu_get_clock(rt_clock) - s->fd_error_time) < FD_OPEN_TIMEOUT) {
-#ifdef DEBUG_FLOPPY
- printf("No floppy (open delayed)\n");
-#endif
- return -EIO;
- }
- s->fd = open(bs->filename, s->fd_open_flags);
- if (s->fd < 0) {
- s->fd_error_time = qemu_get_clock(rt_clock);
- s->fd_got_error = 1;
- if (last_media_present)
- s->fd_media_changed = 1;
-#ifdef DEBUG_FLOPPY
- printf("No floppy\n");
-#endif
- return -EIO;
- }
-#ifdef DEBUG_FLOPPY
- printf("Floppy opened\n");
-#endif
- }
- if (!last_media_present)
- s->fd_media_changed = 1;
- s->fd_open_time = qemu_get_clock(rt_clock);
- s->fd_got_error = 0;
- return 0;
-}
-#else
-static int fd_open(BlockDriverState *bs)
-{
- return 0;
-}
-#endif
-
-#if defined(__linux__)
-
-static int raw_is_inserted(BlockDriverState *bs)
-{
- BDRVRawState *s = bs->opaque;
- int ret;
-
- switch(s->type) {
- case FTYPE_CD:
- ret = ioctl(s->fd, CDROM_DRIVE_STATUS, CDSL_CURRENT);
- if (ret == CDS_DISC_OK)
- return 1;
- else
- return 0;
- break;
- case FTYPE_FD:
- ret = fd_open(bs);
- return (ret >= 0);
- default:
- return 1;
- }
-}
-
-/* currently only used by fdc.c, but a CD version would be good too */
-static int raw_media_changed(BlockDriverState *bs)
-{
- BDRVRawState *s = bs->opaque;
-
- switch(s->type) {
- case FTYPE_FD:
- {
- int ret;
- /* XXX: we do not have a true media changed indication. It
- does not work if the floppy is changed without trying
- to read it */
- fd_open(bs);
- ret = s->fd_media_changed;
- s->fd_media_changed = 0;
-#ifdef DEBUG_FLOPPY
- printf("Floppy changed=%d\n", ret);
-#endif
- return ret;
- }
- default:
- return -ENOTSUP;
- }
-}
-
-static int raw_eject(BlockDriverState *bs, int eject_flag)
-{
- BDRVRawState *s = bs->opaque;
-
- switch(s->type) {
- case FTYPE_CD:
- if (eject_flag) {
- if (ioctl (s->fd, CDROMEJECT, NULL) < 0)
- perror("CDROMEJECT");
- } else {
- if (ioctl (s->fd, CDROMCLOSETRAY, NULL) < 0)
- perror("CDROMEJECT");
- }
- break;
- case FTYPE_FD:
- {
- int fd;
- if (s->fd >= 0) {
- close(s->fd);
- s->fd = -1;
- }
- fd = open(bs->filename, s->fd_open_flags | O_NONBLOCK);
- if (fd >= 0) {
- if (ioctl(fd, FDEJECT, 0) < 0)
- perror("FDEJECT");
- close(fd);
- }
- }
- break;
- default:
- return -ENOTSUP;
- }
- return 0;
-}
-
-static int raw_set_locked(BlockDriverState *bs, int locked)
-{
- BDRVRawState *s = bs->opaque;
-
- switch(s->type) {
- case FTYPE_CD:
- if (ioctl (s->fd, CDROM_LOCKDOOR, locked) < 0) {
- /* Note: an error can happen if the distribution automatically
- mounts the CD-ROM */
- // perror("CDROM_LOCKDOOR");
- }
- break;
- default:
- return -ENOTSUP;
- }
- return 0;
-}
-
-#else
-
-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)
-{
- return -ENOTSUP;
-}
-
-static int raw_set_locked(BlockDriverState *bs, int locked)
-{
- return -ENOTSUP;
-}
-
-#endif /* !linux */
-
-BlockDriver bdrv_host_device = {
- "host_device",
- sizeof(BDRVRawState),
- NULL, /* no probe for protocols */
- hdev_open,
- NULL,
- NULL,
- raw_close,
- NULL,
- raw_flush,
-
- .bdrv_aio_read = raw_aio_read,
- .bdrv_aio_write = raw_aio_write,
- .bdrv_aio_cancel = raw_aio_cancel,
- .aiocb_size = sizeof(RawAIOCB),
- .bdrv_pread = raw_pread,
- .bdrv_pwrite = raw_pwrite,
- .bdrv_getlength = raw_getlength,
-
- /* removable device support */
- .bdrv_is_inserted = raw_is_inserted,
- .bdrv_media_changed = raw_media_changed,
- .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 */
Index: qemu/Makefile
===================================================================
--- qemu.orig/Makefile 2007-12-06 09:42:14.000000000 -0600
+++ qemu/Makefile 2007-12-06 09:47:04.000000000 -0600
@@ -119,9 +119,16 @@
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
| [Prev in Thread] |
Current Thread |
[Next in Thread] |
- [Qemu-devel] [PATCH] Split block-raw.c into block-raw-posix.c and block-raw-win32.c,
Anthony Liguori <=