diff options
Diffstat (limited to 'blockdev.c')
| -rw-r--r-- | blockdev.c | 103 |
1 files changed, 65 insertions, 38 deletions
diff --git a/blockdev.c b/blockdev.c index b361fbb964..ad436488b7 100644 --- a/blockdev.c +++ b/blockdev.c @@ -216,11 +216,17 @@ static void bdrv_format_print(void *opaque, const char *name) void drive_del(DriveInfo *dinfo) { + bdrv_unref(dinfo->bdrv); +} + +void drive_info_del(DriveInfo *dinfo) +{ + if (!dinfo) { + return; + } if (dinfo->opts) { qemu_opts_del(dinfo->opts); } - - bdrv_unref(dinfo->bdrv); g_free(dinfo->id); QTAILQ_REMOVE(&drives, dinfo, next); g_free(dinfo->serial); @@ -301,6 +307,7 @@ static DriveInfo *blockdev_init(const char *file, QDict *bs_opts, int ro = 0; int bdrv_flags = 0; int on_read_error, on_write_error; + BlockDriverState *bs; DriveInfo *dinfo; ThrottleConfig cfg; int snapshot = 0; @@ -456,26 +463,27 @@ static DriveInfo *blockdev_init(const char *file, QDict *bs_opts, } /* init */ - dinfo = g_malloc0(sizeof(*dinfo)); - dinfo->id = g_strdup(qemu_opts_id(opts)); - dinfo->bdrv = bdrv_new(dinfo->id, &error); - if (error) { - error_propagate(errp, error); - goto bdrv_new_err; + bs = bdrv_new(qemu_opts_id(opts), errp); + if (!bs) { + goto early_err; } - dinfo->bdrv->open_flags = snapshot ? BDRV_O_SNAPSHOT : 0; - dinfo->bdrv->read_only = ro; - dinfo->bdrv->detect_zeroes = detect_zeroes; - QTAILQ_INSERT_TAIL(&drives, dinfo, next); + bs->open_flags = snapshot ? BDRV_O_SNAPSHOT : 0; + bs->read_only = ro; + bs->detect_zeroes = detect_zeroes; - bdrv_set_on_error(dinfo->bdrv, on_read_error, on_write_error); + bdrv_set_on_error(bs, on_read_error, on_write_error); /* disk I/O throttling */ if (throttle_enabled(&cfg)) { - bdrv_io_limits_enable(dinfo->bdrv); - bdrv_set_io_limits(dinfo->bdrv, &cfg); + bdrv_io_limits_enable(bs); + bdrv_set_io_limits(bs, &cfg); } + dinfo = g_malloc0(sizeof(*dinfo)); + dinfo->id = g_strdup(qemu_opts_id(opts)); + dinfo->bdrv = bs; + QTAILQ_INSERT_TAIL(&drives, dinfo, next); + if (!file || !*file) { if (has_driver_specific_opts) { file = NULL; @@ -502,7 +510,8 @@ static DriveInfo *blockdev_init(const char *file, QDict *bs_opts, bdrv_flags |= ro ? 0 : BDRV_O_RDWR; QINCREF(bs_opts); - ret = bdrv_open(&dinfo->bdrv, file, NULL, bs_opts, bdrv_flags, drv, &error); + ret = bdrv_open(&bs, file, NULL, bs_opts, bdrv_flags, drv, &error); + assert(bs == dinfo->bdrv); if (ret < 0) { error_setg(errp, "could not open disk image %s: %s", @@ -511,8 +520,9 @@ static DriveInfo *blockdev_init(const char *file, QDict *bs_opts, goto err; } - if (bdrv_key_required(dinfo->bdrv)) + if (bdrv_key_required(bs)) { autostart = 0; + } QDECREF(bs_opts); qemu_opts_del(opts); @@ -520,11 +530,7 @@ static DriveInfo *blockdev_init(const char *file, QDict *bs_opts, return dinfo; err: - bdrv_unref(dinfo->bdrv); - QTAILQ_REMOVE(&drives, dinfo, next); -bdrv_new_err: - g_free(dinfo->id); - g_free(dinfo); + bdrv_unref(bs); early_err: qemu_opts_del(opts); err_no_opts: @@ -532,12 +538,18 @@ err_no_opts: return NULL; } -static void qemu_opt_rename(QemuOpts *opts, const char *from, const char *to) +static void qemu_opt_rename(QemuOpts *opts, const char *from, const char *to, + Error **errp) { const char *value; value = qemu_opt_get(opts, from); if (value) { + if (qemu_opt_find(opts, to)) { + error_setg(errp, "'%s' and its alias '%s' can't be used at the " + "same time", to, from); + return; + } qemu_opt_set(opts, to, value); qemu_opt_unset(opts, from); } @@ -641,28 +653,43 @@ DriveInfo *drive_new(QemuOpts *all_opts, BlockInterfaceType block_default_type) const char *serial; const char *filename; Error *local_err = NULL; + int i; /* Change legacy command line options into QMP ones */ - qemu_opt_rename(all_opts, "iops", "throttling.iops-total"); - qemu_opt_rename(all_opts, "iops_rd", "throttling.iops-read"); - qemu_opt_rename(all_opts, "iops_wr", "throttling.iops-write"); + static const struct { + const char *from; + const char *to; + } opt_renames[] = { + { "iops", "throttling.iops-total" }, + { "iops_rd", "throttling.iops-read" }, + { "iops_wr", "throttling.iops-write" }, - qemu_opt_rename(all_opts, "bps", "throttling.bps-total"); - qemu_opt_rename(all_opts, "bps_rd", "throttling.bps-read"); - qemu_opt_rename(all_opts, "bps_wr", "throttling.bps-write"); + { "bps", "throttling.bps-total" }, + { "bps_rd", "throttling.bps-read" }, + { "bps_wr", "throttling.bps-write" }, - qemu_opt_rename(all_opts, "iops_max", "throttling.iops-total-max"); - qemu_opt_rename(all_opts, "iops_rd_max", "throttling.iops-read-max"); - qemu_opt_rename(all_opts, "iops_wr_max", "throttling.iops-write-max"); + { "iops_max", "throttling.iops-total-max" }, + { "iops_rd_max", "throttling.iops-read-max" }, + { "iops_wr_max", "throttling.iops-write-max" }, - qemu_opt_rename(all_opts, "bps_max", "throttling.bps-total-max"); - qemu_opt_rename(all_opts, "bps_rd_max", "throttling.bps-read-max"); - qemu_opt_rename(all_opts, "bps_wr_max", "throttling.bps-write-max"); + { "bps_max", "throttling.bps-total-max" }, + { "bps_rd_max", "throttling.bps-read-max" }, + { "bps_wr_max", "throttling.bps-write-max" }, - qemu_opt_rename(all_opts, - "iops_size", "throttling.iops-size"); + { "iops_size", "throttling.iops-size" }, - qemu_opt_rename(all_opts, "readonly", "read-only"); + { "readonly", "read-only" }, + }; + + for (i = 0; i < ARRAY_SIZE(opt_renames); i++) { + qemu_opt_rename(all_opts, opt_renames[i].from, opt_renames[i].to, + &local_err); + if (local_err) { + error_report("%s", error_get_pretty(local_err)); + error_free(local_err); + return NULL; + } + } value = qemu_opt_get(all_opts, "cache"); if (value) { |