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charset="utf-8" This commit adds Zoned Device Model (as defined in T10 ZBC and T13 ZAC standards) as a block driver property, along with some useful access functions. A new backend driver permission, BLK_PERM_SUPPORT_ZONED, is also introduced. Only the drivers having this permission will be allowed to open zoned block devices. No code is added yet to initialize or check the value of this new property, therefore this commit doesn't change any functionality. Signed-off-by: Dmitry Fomichev --- block.c | 19 +++++++++++++++++++ include/block/block.h | 21 ++++++++++++++++++++- include/block/block_int.h | 4 ++++ 3 files changed, 43 insertions(+), 1 deletion(-) diff --git a/block.c b/block.c index cbd8da5f3b..c717c4d6f5 100644 --- a/block.c +++ b/block.c @@ -4667,6 +4667,25 @@ void bdrv_get_geometry(BlockDriverState *bs, uint64_= t *nb_sectors_ptr) *nb_sectors_ptr =3D nb_sectors < 0 ? 0 : nb_sectors; } =20 +uint8_t bdrv_get_zoned_model(BlockDriverState *bs) +{ + if (bs->drv->bdrv_get_zoned_info) { + bs->drv->bdrv_get_zoned_info(bs); + } + + return bs->bl.zoned_model; +} + +uint8_t bdrv_is_zoned(BlockDriverState *bs) +{ + /* + * Host Aware zone devices are supposed to be able to work + * just like regular block devices. Thus, we only consider + * Host Managed devices to be zoned here. + */ + return bdrv_get_zoned_model(bs) =3D=3D BLK_ZONED_MODEL_HM; +} + bool bdrv_is_sg(BlockDriverState *bs) { return bs->sg; diff --git a/include/block/block.h b/include/block/block.h index 50a07c1c33..bd98933f67 100644 --- a/include/block/block.h +++ b/include/block/block.h @@ -266,18 +266,35 @@ enum { */ BLK_PERM_GRAPH_MOD =3D 0x10, =20 + /** This permission is required to open zoned block devices. */ + BLK_PERM_SUPPORT_ZONED =3D 0x20, + BLK_PERM_ALL =3D 0x1f, =20 DEFAULT_PERM_PASSTHROUGH =3D BLK_PERM_CONSISTENT_READ | BLK_PERM_WRITE | BLK_PERM_WRITE_UNCHANGED - | BLK_PERM_RESIZE, + | BLK_PERM_RESIZE + | BLK_PERM_SUPPORT_ZONED, =20 DEFAULT_PERM_UNCHANGED =3D BLK_PERM_ALL & ~DEFAULT_PERM_PASSTHROU= GH, }; =20 char *bdrv_perm_names(uint64_t perm); =20 +/* + * Known zoned device models. + * + * TODO For a Linux host, it could be preferrable to include + * /usr/include/linux/blkzoned.h instead of defining ZBD-specific + * values here. + */ +enum blk_zoned_model { + BLK_ZONED_MODEL_NONE, /* Regular block device */ + BLK_ZONED_MODEL_HA, /* Host-aware zoned block device */ + BLK_ZONED_MODEL_HM, /* Host-managed zoned block device */ +}; + /* disk I/O throttling */ void bdrv_init(void); void bdrv_init_with_whitelist(void); @@ -354,6 +371,8 @@ int64_t bdrv_get_allocated_file_size(BlockDriverState *= bs); BlockMeasureInfo *bdrv_measure(BlockDriver *drv, QemuOpts *opts, BlockDriverState *in_bs, Error **errp); void bdrv_get_geometry(BlockDriverState *bs, uint64_t *nb_sectors_ptr); +uint8_t bdrv_get_zoned_model(BlockDriverState *bs); +uint8_t bdrv_is_zoned(BlockDriverState *bs); void bdrv_refresh_limits(BlockDriverState *bs, Error **errp); int bdrv_commit(BlockDriverState *bs); int bdrv_change_backing_file(BlockDriverState *bs, diff --git a/include/block/block_int.h b/include/block/block_int.h index 3aa1e832a8..52c5758a9d 100644 --- a/include/block/block_int.h +++ b/include/block/block_int.h @@ -416,6 +416,7 @@ struct BlockDriver { bool (*bdrv_debug_is_suspended)(BlockDriverState *bs, const char *tag); =20 void (*bdrv_refresh_limits)(BlockDriverState *bs, Error **errp); + void (*bdrv_get_zoned_info)(BlockDriverState *bs); =20 /* * Returns 1 if newly created images are guaranteed to contain only @@ -614,6 +615,9 @@ typedef struct BlockLimits { =20 /* maximum number of iovec elements */ int max_iov; + + /* Zoned device model. Zero value indicates a regular block device */ + uint8_t zoned_model; } BlockLimits; =20 typedef struct BdrvOpBlocker BdrvOpBlocker; --=20 2.21.0 From nobody Sun May 19 16:58:51 2024 Delivered-To: importer@patchew.org Received-SPF: pass (zoho.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Authentication-Results: mx.zohomail.com; dkim=fail header.i=@wdc.com; spf=pass (zoho.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=fail(p=none dis=none) header.from=wdc.com ARC-Seal: i=1; a=rsa-sha256; t=1563920437; cv=none; d=zoho.com; s=zohoarc; b=KNeurtw33QgNkkVyvaCI53ghGEhB8NZi5ndUN/f0R/P+OVABLA1xIJAFn8E06WF/2KhaD7RGivkxO/uiDc9xCgipGMfmP4uXz1l6LvLkcm7fxsQ4vJMGFrILtRpXMAf3zdr4xpCpVwhCZQwJ22b4IBM8XNwPKs5gRhtz9vUT0ZU= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; 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charset="utf-8" The purpose of this patch is to recognize a zoned block device (ZBD) when it is opened as a raw file. The new code initializes the zoned model propery introduced by the previous commit. This commit is Linux-specific as it gets the Zoned Block Device Model value (none/host-managed/host-aware) from sysfs on the host. In order to avoid code duplication in file-posix.c, a common helper function is added to read values of sysfs entries under /sys/block//queue. This way, the existing function that reads the value of "max_segments" entry and the the new function that reads "zoned" value both share the same helper code. Signed-off-by: Dmitry Fomichev --- block/file-posix.c | 74 ++++++++++++++++++++++++++++++++++++++-------- block/raw-format.c | 8 +++++ 2 files changed, 70 insertions(+), 12 deletions(-) diff --git a/block/file-posix.c b/block/file-posix.c index 4479cc7ab4..e307cab7a4 100644 --- a/block/file-posix.c +++ b/block/file-posix.c @@ -1053,15 +1053,13 @@ static int sg_get_max_transfer_length(int fd) #endif } =20 -static int sg_get_max_segments(int fd) +static int hdev_read_blk_queue_entry(int fd, const char *key, + char *buf, int buf_len) { #ifdef CONFIG_LINUX - char buf[32]; - const char *end; char *sysfspath =3D NULL; int ret; int sysfd =3D -1; - long max_segments; struct stat st; =20 if (fstat(fd, &st)) { @@ -1069,23 +1067,45 @@ static int sg_get_max_segments(int fd) goto out; } =20 - sysfspath =3D g_strdup_printf("/sys/dev/block/%u:%u/queue/max_segments= ", - major(st.st_rdev), minor(st.st_rdev)); + sysfspath =3D g_strdup_printf("/sys/dev/block/%u:%u/queue/%s", + major(st.st_rdev), minor(st.st_rdev), key); sysfd =3D open(sysfspath, O_RDONLY); if (sysfd =3D=3D -1) { ret =3D -errno; goto out; } do { - ret =3D read(sysfd, buf, sizeof(buf) - 1); + ret =3D read(sysfd, buf, buf_len - 1); } while (ret =3D=3D -1 && errno =3D=3D EINTR); if (ret < 0) { ret =3D -errno; - goto out; } else if (ret =3D=3D 0) { ret =3D -EIO; + } +out: + if (sysfd !=3D -1) { + close(sysfd); + } + g_free(sysfspath); + return ret; +#else + return -ENOTSUP; +#endif +} + +static int sg_get_max_segments(int fd) +{ +#ifdef CONFIG_LINUX + char buf[32]; + const char *end; + int ret; + long max_segments; + + ret =3D hdev_read_blk_queue_entry(fd, "max_segments", buf, sizeof(buf)= ); + if (ret < 0) { goto out; } + buf[ret] =3D 0; /* The file is ended with '\n', pass 'end' to accept that. */ ret =3D qemu_strtol(buf, &end, 10, &max_segments); @@ -1094,10 +1114,33 @@ static int sg_get_max_segments(int fd) } =20 out: - if (sysfd !=3D -1) { - close(sysfd); + return ret; +#else + return -ENOTSUP; +#endif +} + +static int hdev_get_zoned_model(int fd) +{ +#ifdef CONFIG_LINUX + char buf[32]; + int ret; + + ret =3D hdev_read_blk_queue_entry(fd, "zoned", buf, sizeof(buf)); + if (ret < 0) { + ret =3D BLK_ZONED_MODEL_NONE; + goto out; } - g_free(sysfspath); + + buf[ret - 1] =3D 0; + ret =3D BLK_ZONED_MODEL_NONE; + if (strcmp(buf, "host-managed") =3D=3D 0) { + ret =3D BLK_ZONED_MODEL_HM; + } else if (strcmp(buf, "host-aware") =3D=3D 0) { + ret =3D BLK_ZONED_MODEL_HA; + } + +out: return ret; #else return -ENOTSUP; @@ -1107,9 +1150,10 @@ out: static void raw_refresh_limits(BlockDriverState *bs, Error **errp) { BDRVRawState *s =3D bs->opaque; + int ret; =20 if (bs->sg) { - int ret =3D sg_get_max_transfer_length(s->fd); + ret =3D sg_get_max_transfer_length(s->fd); =20 if (ret > 0 && ret <=3D BDRV_REQUEST_MAX_BYTES) { bs->bl.max_transfer =3D pow2floor(ret); @@ -1119,6 +1163,12 @@ static void raw_refresh_limits(BlockDriverState *bs,= Error **errp) if (ret > 0) { bs->bl.max_transfer =3D MIN(bs->bl.max_transfer, ret * getpage= size()); } + + } + + ret =3D hdev_get_zoned_model(s->fd); + if (ret >=3D 0) { + bs->bl.zoned_model =3D ret; } =20 raw_probe_alignment(bs, s->fd, errp); diff --git a/block/raw-format.c b/block/raw-format.c index bffd424dd0..12c2a3f95d 100644 --- a/block/raw-format.c +++ b/block/raw-format.c @@ -369,6 +369,13 @@ static void raw_refresh_limits(BlockDriverState *bs, E= rror **errp) } } =20 +static void raw_get_zoned_info(BlockDriverState *bs) +{ + if (!bs->probed) { + bs->bl.zoned_model =3D bs->file->bs->bl.zoned_model; + } +} + static int coroutine_fn raw_co_truncate(BlockDriverState *bs, int64_t offs= et, PreallocMode prealloc, Error **err= p) { @@ -572,6 +579,7 @@ BlockDriver bdrv_raw =3D { .bdrv_co_ioctl =3D &raw_co_ioctl, .create_opts =3D &raw_create_opts, .bdrv_has_zero_init =3D &raw_has_zero_init, + .bdrv_get_zoned_info =3D &raw_get_zoned_info, .strong_runtime_opts =3D raw_strong_runtime_opts, .mutable_opts =3D mutable_opts, }; --=20 2.21.0 From nobody Sun May 19 16:58:51 2024 Delivered-To: importer@patchew.org Received-SPF: pass (zoho.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; 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IronPort-SDR: t4yLiTT7GJbRz+D0Hqyqg0LVVFD6tZgL6MpuSE9yI9fqG4YqmI4F9A6ykd63ch4RykW8QuXrRU SK5V7Hb/mupSPuUSXxQ093xzb41qZEl8kLtW06PXXEOpa3EpeVe8a9uicK8ZhfEJVNTodSG/NM le73D1ZvKzjhu3SCRt/OZr1yw+ODlEKWZVJK61F6KTDM+YdEZoQUXeSp4JRGgAf+jhxfJoF3ca QBfa2zrclkFJk/YYH7wcVWOawrs6ThhgmKninAqvqdep1MwOjcAW5BhBJZ64aNIni8LiINlvGr 8GI= X-IronPort-AV: E=Sophos;i="5.64,300,1559491200"; d="scan'208";a="113843262" IronPort-SDR: 5WJivhTvRCs8j4+9ktQuCj8OfOjD6OZTWGtqeSsIWUWUH3V5ROKLlbqbMeWvodkbeRkCoGlnii 0cFmtM40CEdLMBvTLVLjvOVevFpb+tqk2no+zr4AJRzI8TO4WCunqLBpFmMB8PJKumqDmMgCv4 6zpisBOhLGnlulqzaUteXTnGr2qfOYEBNjhbxP9M5zS/2Gnbq72DUSo4pROBbRWSh8Mt/XQiAx XR2YZRXGTo2sSr3HSFwbjW7bGHt6/qzfu1/ajUk1GSYfLDw8dmsEPQZNgDpzcAuNUlWngNuYqY +4fvZpOeIOnTpXKk4Ly7eMpY IronPort-SDR: wVZ3V9paXqvdqPGwaYtaXqdFsLK7KNa33Gjs9HD6Wfo5Cs+PeUtPzmmUYQfEdnfyb24EoLKqbC ODMVp1XmjopeGpVQ3sYINLYWj7EYN0zLZeSyWC2qIwCRDAqBFb9QWtH8BhKocMmdlOt56IzU8y JGi8jEjLgoJM4A2ITzQLB4uJn7ZL7/+TXTi67wfRpMXpQapZdZdwHISKER0xk3KjpR8PFV3CsF LDesmyZW/FhTnlIGAe8oaxbN0dlvlnjPj1NVfp71KL45fgUu7Xl17vOXUcK7LfKtfEesc61SV5 fVw= From: Dmitry Fomichev To: qemu-devel@nongnu.org, qemu-block@nongnu.org Date: Tue, 23 Jul 2019 18:19:39 -0400 Message-Id: <20190723221940.25585-4-dmitry.fomichev@wdc.com> X-Mailer: git-send-email 2.21.0 In-Reply-To: <20190723221940.25585-1-dmitry.fomichev@wdc.com> References: <20190723221940.25585-1-dmitry.fomichev@wdc.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-detected-operating-system: by eggs.gnu.org: FreeBSD 9.x X-Received-From: 216.71.154.42 Subject: [Qemu-devel] [PATCH v3 3/4] block/ide/scsi: Set BLK_PERM_SUPPORT_ZONED X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Kevin Wolf , Fam Zheng , Stefano Stabellini , "Michael S. Tsirkin" , Max Reitz , Keith Busch , Paul Durrant , Gerd Hoffmann , Stefan Hajnoczi , Anthony Perard , Paolo Bonzini , John Snow Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail-DKIM: fail (Header signature does not verify) Content-Type: text/plain; charset="utf-8" Added a new boolean argument to blkconf_apply_backend_options() to let the common block code know whether the chosen block backend can handle zoned block devices or not. blkconf_apply_backend_options() then sets BLK_PERM_SUPPORT_ZONED permission accordingly. The raw code can then use this permission to allow or deny opening a zone device by a particular block driver. Signed-off-by: Dmitry Fomichev Acked-by: Paul Durrant --- hw/block/block.c | 8 ++++++-- hw/block/fdc.c | 4 ++-- hw/block/nvme.c | 2 +- hw/block/virtio-blk.c | 2 +- hw/block/xen-block.c | 2 +- hw/ide/qdev.c | 2 +- hw/scsi/scsi-disk.c | 13 +++++++------ hw/scsi/scsi-generic.c | 2 +- hw/usb/dev-storage.c | 2 +- include/hw/block/block.h | 3 ++- 10 files changed, 23 insertions(+), 17 deletions(-) diff --git a/hw/block/block.c b/hw/block/block.c index bf56c7612b..23fbe4d567 100644 --- a/hw/block/block.c +++ b/hw/block/block.c @@ -86,7 +86,8 @@ void blkconf_blocksizes(BlockConf *conf) } =20 bool blkconf_apply_backend_options(BlockConf *conf, bool readonly, - bool resizable, Error **errp) + bool resizable, bool zoned_support, + Error **errp) { BlockBackend *blk =3D conf->blk; BlockdevOnError rerror, werror; @@ -98,9 +99,12 @@ bool blkconf_apply_backend_options(BlockConf *conf, bool= readonly, if (!readonly) { perm |=3D BLK_PERM_WRITE; } + if (zoned_support) { + perm |=3D BLK_PERM_SUPPORT_ZONED; + } =20 shared_perm =3D BLK_PERM_CONSISTENT_READ | BLK_PERM_WRITE_UNCHANGED | - BLK_PERM_GRAPH_MOD; + BLK_PERM_GRAPH_MOD | BLK_PERM_SUPPORT_ZONED; if (resizable) { shared_perm |=3D BLK_PERM_RESIZE; } diff --git a/hw/block/fdc.c b/hw/block/fdc.c index 77af9979de..85efc80992 100644 --- a/hw/block/fdc.c +++ b/hw/block/fdc.c @@ -474,7 +474,7 @@ static void fd_change_cb(void *opaque, bool load, Error= **errp) } else { if (!blkconf_apply_backend_options(drive->conf, blk_is_read_only(drive->blk), f= alse, - errp)) { + false, errp)) { return; } } @@ -561,7 +561,7 @@ static void floppy_drive_realize(DeviceState *qdev, Err= or **errp) =20 if (!blkconf_apply_backend_options(&dev->conf, blk_is_read_only(dev->conf.blk), - false, errp)) { + false, false, errp)) { return; } =20 diff --git a/hw/block/nvme.c b/hw/block/nvme.c index 36d6a8bb3a..71b35bf4e7 100644 --- a/hw/block/nvme.c +++ b/hw/block/nvme.c @@ -1333,7 +1333,7 @@ static void nvme_realize(PCIDevice *pci_dev, Error **= errp) } blkconf_blocksizes(&n->conf); if (!blkconf_apply_backend_options(&n->conf, blk_is_read_only(n->conf.= blk), - false, errp)) { + false, false, errp)) { return; } =20 diff --git a/hw/block/virtio-blk.c b/hw/block/virtio-blk.c index cbb3729158..8894bdbb0c 100644 --- a/hw/block/virtio-blk.c +++ b/hw/block/virtio-blk.c @@ -1123,7 +1123,7 @@ static void virtio_blk_device_realize(DeviceState *de= v, Error **errp) =20 if (!blkconf_apply_backend_options(&conf->conf, blk_is_read_only(conf->conf.blk), t= rue, - errp)) { + false, errp)) { return; } s->original_wce =3D blk_enable_write_cache(conf->conf.blk); diff --git a/hw/block/xen-block.c b/hw/block/xen-block.c index 69d73196e2..8ed5e9d832 100644 --- a/hw/block/xen-block.c +++ b/hw/block/xen-block.c @@ -228,7 +228,7 @@ static void xen_block_realize(XenDevice *xendev, Error = **errp) } =20 if (!blkconf_apply_backend_options(conf, blockdev->info & VDISK_READON= LY, - true, errp)) { + true, false, errp)) { return; } =20 diff --git a/hw/ide/qdev.c b/hw/ide/qdev.c index 9d8502785d..c0b4a445e4 100644 --- a/hw/ide/qdev.c +++ b/hw/ide/qdev.c @@ -197,7 +197,7 @@ static void ide_dev_initfn(IDEDevice *dev, IDEDriveKind= kind, Error **errp) } } if (!blkconf_apply_backend_options(&dev->conf, kind =3D=3D IDE_CD, - kind !=3D IDE_CD, errp)) { + kind !=3D IDE_CD, false, errp)) { return; } =20 diff --git a/hw/scsi/scsi-disk.c b/hw/scsi/scsi-disk.c index 8e95e3e38d..f20815b1d7 100644 --- a/hw/scsi/scsi-disk.c +++ b/hw/scsi/scsi-disk.c @@ -2315,7 +2315,7 @@ static void scsi_disk_unit_attention_reported(SCSIDev= ice *dev) } } =20 -static void scsi_realize(SCSIDevice *dev, Error **errp) +static void scsi_realize(SCSIDevice *dev, bool zoned_support, Error **errp) { SCSIDiskState *s =3D DO_UPCAST(SCSIDiskState, qdev, dev); =20 @@ -2353,7 +2353,8 @@ static void scsi_realize(SCSIDevice *dev, Error **err= p) } if (!blkconf_apply_backend_options(&dev->conf, blk_is_read_only(s->qdev.conf.blk), - dev->type =3D=3D TYPE_DISK, errp)) { + dev->type =3D=3D TYPE_DISK, zoned_s= upport, + errp)) { return; } =20 @@ -2412,7 +2413,7 @@ static void scsi_hd_realize(SCSIDevice *dev, Error **= errp) if (!s->product) { s->product =3D g_strdup("QEMU HARDDISK"); } - scsi_realize(&s->qdev, errp); + scsi_realize(&s->qdev, false, errp); if (ctx) { aio_context_release(ctx); } @@ -2440,7 +2441,7 @@ static void scsi_cd_realize(SCSIDevice *dev, Error **= errp) if (!s->product) { s->product =3D g_strdup("QEMU CD-ROM"); } - scsi_realize(&s->qdev, errp); + scsi_realize(&s->qdev, false, errp); aio_context_release(ctx); } =20 @@ -2450,7 +2451,7 @@ static void scsi_disk_realize(SCSIDevice *dev, Error = **errp) Error *local_err =3D NULL; =20 if (!dev->conf.blk) { - scsi_realize(dev, &local_err); + scsi_realize(dev, false, &local_err); assert(local_err); error_propagate(errp, local_err); return; @@ -2643,7 +2644,7 @@ static void scsi_block_realize(SCSIDevice *dev, Error= **errp) */ s->features |=3D (1 << SCSI_DISK_F_NO_REMOVABLE_DEVOPS); =20 - scsi_realize(&s->qdev, errp); + scsi_realize(&s->qdev, true, errp); scsi_generic_read_device_inquiry(&s->qdev); =20 out: diff --git a/hw/scsi/scsi-generic.c b/hw/scsi/scsi-generic.c index c11a0c9a84..50b30e9541 100644 --- a/hw/scsi/scsi-generic.c +++ b/hw/scsi/scsi-generic.c @@ -690,7 +690,7 @@ static void scsi_generic_realize(SCSIDevice *s, Error *= *errp) } if (!blkconf_apply_backend_options(&s->conf, blk_is_read_only(s->conf.blk), - true, errp)) { + true, true, errp)) { return; } =20 diff --git a/hw/usb/dev-storage.c b/hw/usb/dev-storage.c index 9ffb88ea5b..60d6a92ce1 100644 --- a/hw/usb/dev-storage.c +++ b/hw/usb/dev-storage.c @@ -601,7 +601,7 @@ static void usb_msd_storage_realize(USBDevice *dev, Err= or **errp) =20 blkconf_blocksizes(&s->conf); if (!blkconf_apply_backend_options(&s->conf, blk_is_read_only(blk), tr= ue, - errp)) { + false, errp)) { return; } =20 diff --git a/include/hw/block/block.h b/include/hw/block/block.h index 607539057a..f988edc87e 100644 --- a/include/hw/block/block.h +++ b/include/hw/block/block.h @@ -85,7 +85,8 @@ bool blkconf_geometry(BlockConf *conf, int *trans, Error **errp); void blkconf_blocksizes(BlockConf *conf); bool blkconf_apply_backend_options(BlockConf *conf, bool readonly, - bool resizable, Error **errp); + bool resizable, bool zoned_support, + Error **errp); =20 /* Hard disk geometry */ =20 --=20 2.21.0 From nobody Sun May 19 16:58:51 2024 Delivered-To: importer@patchew.org Received-SPF: pass (zoho.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; 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charset="utf-8" Abort opening a zoned device as a raw file in case the chosen block backend driver lacks proper support for this type of storage. Signed-off-by: Dmitry Fomichev --- block/file-posix.c | 14 ++++++++++++++ 1 file changed, 14 insertions(+) diff --git a/block/file-posix.c b/block/file-posix.c index e307cab7a4..507dba98c5 100644 --- a/block/file-posix.c +++ b/block/file-posix.c @@ -2870,6 +2870,20 @@ static int raw_check_perm(BlockDriverState *bs, uint= 64_t perm, uint64_t shared, goto fail; } } + + /* + * If we are opening a zoned block device, check if the backend + * driver can properly handle such devices, abort if not. + */ + if (bdrv_is_zoned(bs) && + (shared & BLK_PERM_SUPPORT_ZONED) && + !(perm & BLK_PERM_SUPPORT_ZONED)) { + error_setg(errp, + "block backend driver doesn't support HM zoned devices"= ); + ret =3D -ENOTSUP; + goto fail; + } + return 0; =20 fail: --=20 2.21.0