From f709623b3d30096c629f6a368670c9cf668da83f Mon Sep 17 00:00:00 2001 From: Max Reitz Date: Mon, 19 Oct 2015 17:53:07 +0200 Subject: block: Remove host floppy support It has been deprecated as of 2.3, so we can now remove it. Signed-off-by: Max Reitz Reviewed-by: Eric Blake Reviewed-by: Kevin Wolf Signed-off-by: Kevin Wolf --- block/raw-posix.c | 222 ++---------------------------------------------------- 1 file changed, 5 insertions(+), 217 deletions(-) (limited to 'block/raw-posix.c') diff --git a/block/raw-posix.c b/block/raw-posix.c index 3a527f0b6b..2e3db44e47 100644 --- a/block/raw-posix.c +++ b/block/raw-posix.c @@ -127,11 +127,6 @@ do { \ #define FTYPE_FILE 0 #define FTYPE_CD 1 -#define FTYPE_FD 2 - -/* if the FD is not accessed during that time (in ns), we try to - reopen it to see if the disk has been changed */ -#define FD_OPEN_TIMEOUT (1000000000) #define MAX_BLOCKSIZE 4096 @@ -141,13 +136,6 @@ typedef struct BDRVRawState { int open_flags; size_t buf_align; -#if defined(__linux__) - /* linux floppy specific */ - int64_t fd_open_time; - int64_t fd_error_time; - int fd_got_error; - int fd_media_changed; -#endif #ifdef CONFIG_LINUX_AIO int use_aio; void *aio_ctx; @@ -635,7 +623,7 @@ static int raw_reopen_prepare(BDRVReopenState *state, } #endif - if (s->type == FTYPE_FD || s->type == FTYPE_CD) { + if (s->type == FTYPE_CD) { raw_s->open_flags |= O_NONBLOCK; } @@ -2187,47 +2175,6 @@ static int hdev_open(BlockDriverState *bs, QDict *options, int flags, } #if defined(__linux__) -/* 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_clock_get_ns(QEMU_CLOCK_REALTIME) - s->fd_open_time) >= FD_OPEN_TIMEOUT) { - qemu_close(s->fd); - s->fd = -1; - DPRINTF("Floppy closed\n"); - } - if (s->fd < 0) { - if (s->fd_got_error && - (qemu_clock_get_ns(QEMU_CLOCK_REALTIME) - s->fd_error_time) < FD_OPEN_TIMEOUT) { - DPRINTF("No floppy (open delayed)\n"); - return -EIO; - } - s->fd = qemu_open(bs->filename, s->open_flags & ~O_NONBLOCK); - if (s->fd < 0) { - s->fd_error_time = qemu_clock_get_ns(QEMU_CLOCK_REALTIME); - s->fd_got_error = 1; - if (last_media_present) - s->fd_media_changed = 1; - DPRINTF("No floppy\n"); - return -EIO; - } - DPRINTF("Floppy opened\n"); - } - if (!last_media_present) - s->fd_media_changed = 1; - s->fd_open_time = qemu_clock_get_ns(QEMU_CLOCK_REALTIME); - s->fd_got_error = 0; - return 0; -} - static int hdev_ioctl(BlockDriverState *bs, unsigned long int req, void *buf) { BDRVRawState *s = bs->opaque; @@ -2256,8 +2203,8 @@ static BlockAIOCB *hdev_aio_ioctl(BlockDriverState *bs, pool = aio_get_thread_pool(bdrv_get_aio_context(bs)); return thread_pool_submit_aio(pool, aio_worker, acb, cb, opaque); } +#endif /* linux */ -#elif defined(__FreeBSD__) || defined(__FreeBSD_kernel__) static int fd_open(BlockDriverState *bs) { BDRVRawState *s = bs->opaque; @@ -2267,14 +2214,6 @@ static int fd_open(BlockDriverState *bs) return 0; return -EIO; } -#else /* !linux && !FreeBSD */ - -static int fd_open(BlockDriverState *bs) -{ - return 0; -} - -#endif /* !linux && !FreeBSD */ static coroutine_fn BlockAIOCB *hdev_aio_discard(BlockDriverState *bs, int64_t sector_num, int nb_sectors, @@ -2318,14 +2257,13 @@ static int hdev_create(const char *filename, QemuOpts *opts, int64_t total_size = 0; bool has_prefix; - /* This function is used by all three protocol block drivers and therefore - * any of these three prefixes may be given. + /* This function is used by both protocol block drivers and therefore either + * of these prefixes may be given. * The return value has to be stored somewhere, otherwise this is an error * due to -Werror=unused-value. */ has_prefix = strstart(filename, "host_device:", &filename) || - strstart(filename, "host_cdrom:" , &filename) || - strstart(filename, "host_floppy:", &filename); + strstart(filename, "host_cdrom:" , &filename); (void)has_prefix; @@ -2405,155 +2343,6 @@ static BlockDriver bdrv_host_device = { #endif }; -#ifdef __linux__ -static void floppy_parse_filename(const char *filename, QDict *options, - Error **errp) -{ - /* The prefix is optional, just as for "file". */ - strstart(filename, "host_floppy:", &filename); - - qdict_put_obj(options, "filename", QOBJECT(qstring_from_str(filename))); -} - -static int floppy_open(BlockDriverState *bs, QDict *options, int flags, - Error **errp) -{ - BDRVRawState *s = bs->opaque; - Error *local_err = NULL; - int ret; - - s->type = FTYPE_FD; - - /* open will not fail even if no floppy is inserted, so add O_NONBLOCK */ - ret = raw_open_common(bs, options, flags, O_NONBLOCK, &local_err); - if (ret) { - if (local_err) { - error_propagate(errp, local_err); - } - return ret; - } - - /* close fd so that we can reopen it as needed */ - qemu_close(s->fd); - s->fd = -1; - s->fd_media_changed = 1; - - error_report("Host floppy pass-through is deprecated"); - error_printf("Support for it will be removed in a future release.\n"); - return 0; -} - -static int floppy_probe_device(const char *filename) -{ - int fd, ret; - int prio = 0; - struct floppy_struct fdparam; - struct stat st; - - if (strstart(filename, "/dev/fd", NULL) && - !strstart(filename, "/dev/fdset/", NULL) && - !strstart(filename, "/dev/fd/", NULL)) { - prio = 50; - } - - fd = qemu_open(filename, O_RDONLY | O_NONBLOCK); - if (fd < 0) { - goto out; - } - ret = fstat(fd, &st); - if (ret == -1 || !S_ISBLK(st.st_mode)) { - goto outc; - } - - /* Attempt to detect via a floppy specific ioctl */ - ret = ioctl(fd, FDGETPRM, &fdparam); - if (ret >= 0) - prio = 100; - -outc: - qemu_close(fd); -out: - return prio; -} - - -static int floppy_is_inserted(BlockDriverState *bs) -{ - return fd_open(bs) >= 0; -} - -static int floppy_media_changed(BlockDriverState *bs) -{ - BDRVRawState *s = bs->opaque; - 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; - DPRINTF("Floppy changed=%d\n", ret); - return ret; -} - -static void floppy_eject(BlockDriverState *bs, bool eject_flag) -{ - BDRVRawState *s = bs->opaque; - int fd; - - if (s->fd >= 0) { - qemu_close(s->fd); - s->fd = -1; - } - fd = qemu_open(bs->filename, s->open_flags | O_NONBLOCK); - if (fd >= 0) { - if (ioctl(fd, FDEJECT, 0) < 0) - perror("FDEJECT"); - qemu_close(fd); - } -} - -static BlockDriver bdrv_host_floppy = { - .format_name = "host_floppy", - .protocol_name = "host_floppy", - .instance_size = sizeof(BDRVRawState), - .bdrv_needs_filename = true, - .bdrv_probe_device = floppy_probe_device, - .bdrv_parse_filename = floppy_parse_filename, - .bdrv_file_open = floppy_open, - .bdrv_close = raw_close, - .bdrv_reopen_prepare = raw_reopen_prepare, - .bdrv_reopen_commit = raw_reopen_commit, - .bdrv_reopen_abort = raw_reopen_abort, - .bdrv_create = hdev_create, - .create_opts = &raw_create_opts, - - .bdrv_aio_readv = raw_aio_readv, - .bdrv_aio_writev = raw_aio_writev, - .bdrv_aio_flush = raw_aio_flush, - .bdrv_refresh_limits = raw_refresh_limits, - .bdrv_io_plug = raw_aio_plug, - .bdrv_io_unplug = raw_aio_unplug, - .bdrv_flush_io_queue = raw_aio_flush_io_queue, - - .bdrv_truncate = raw_truncate, - .bdrv_getlength = raw_getlength, - .has_variable_length = true, - .bdrv_get_allocated_file_size - = raw_get_allocated_file_size, - - .bdrv_detach_aio_context = raw_detach_aio_context, - .bdrv_attach_aio_context = raw_attach_aio_context, - - /* removable device support */ - .bdrv_is_inserted = floppy_is_inserted, - .bdrv_media_changed = floppy_media_changed, - .bdrv_eject = floppy_eject, -}; -#endif - #if defined(__linux__) || defined(__FreeBSD__) || defined(__FreeBSD_kernel__) static void cdrom_parse_filename(const char *filename, QDict *options, Error **errp) @@ -2831,7 +2620,6 @@ static void bdrv_file_init(void) bdrv_register(&bdrv_file); bdrv_register(&bdrv_host_device); #ifdef __linux__ - bdrv_register(&bdrv_host_floppy); bdrv_register(&bdrv_host_cdrom); #endif #if defined(__FreeBSD__) || defined(__FreeBSD_kernel__) -- cgit v1.2.3