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
diff --git a/block-raw-posix.c b/block-raw-posix.c
new file mode 100644
index 0000000..089a1f4
--- /dev/null
+++ b/block-raw-posix.c
@@ -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,
+};
