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From 797d7b90c677e49552fbe7c526ce849b964e1ffe Mon Sep 17 00:00:00 2001
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From: Petr Uzel <petr.uzel@suse.cz>
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Date: Tue, 14 Jun 2016 13:17:00 +0200
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Subject: [PATCH 42/53] Add support for NVMe devices
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Recognize NVMe Devices, so "parted -s /dev/nvme0n1" now prints
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"NVMe Device (nvme)" instead of "Model: Unknown (unknown)".
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In order for a device to be recognized as NVMe, it has to
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have a 'blkext' major number. But since this major can be
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used also by other device types, we also check the device
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path contains 'nvme' as a substring.
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* NEWS: Mention the change
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* include/parted/device.h.in(PedDeviceType): Add PED_DEVICE_NVME
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* libparted/arch/linux.c(BLKEXT_MAJOR): New define.
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* libparted/arch/linux.c(_is_blkext_major): New function.
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* libparted/arch/linux.c(_device_probe_type): Recognize NVMe devices.
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* libparted/arch/linux.c(linux_new): Handle NVMe devices.
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* parted/parted.c(do_print): Add "nvme" to list of transports.
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Signed-off-by: Brian C. Lane <bcl@redhat.com>
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(cherry picked from commit e4ae4330f3e33201aeeed3b7ca88e15d98d03e13)
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---
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include/parted/device.in.h | 3 ++-
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libparted/arch/linux.c | 14 ++++++++++++++
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parted/parted.c | 2 +-
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3 files changed, 17 insertions(+), 2 deletions(-)
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diff --git a/include/parted/device.in.h b/include/parted/device.in.h
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index 82d4104..d38db44 100644
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--- a/include/parted/device.in.h
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+++ b/include/parted/device.in.h
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@@ -49,7 +49,8 @@ typedef enum {
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PED_DEVICE_VIRTBLK = 15,
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PED_DEVICE_AOE = 16,
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PED_DEVICE_MD = 17,
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- PED_DEVICE_LOOP = 18
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+ PED_DEVICE_LOOP = 18,
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+ PED_DEVICE_NVME = 19
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} PedDeviceType;
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typedef struct _PedDevice PedDevice;
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diff --git a/libparted/arch/linux.c b/libparted/arch/linux.c
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index eb01deb..b7ba5de 100644
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--- a/libparted/arch/linux.c
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+++ b/libparted/arch/linux.c
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@@ -278,6 +278,7 @@ struct blkdev_ioctl_param {
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#define SDMMC_MAJOR 179
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#define LOOP_MAJOR 7
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#define MD_MAJOR 9
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+#define BLKEXT_MAJOR 259
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#define SCSI_BLK_MAJOR(M) ( \
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(M) == SCSI_DISK0_MAJOR \
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@@ -441,6 +442,12 @@ _is_virtblk_major (int major)
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return _major_type_in_devices (major, "virtblk");
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}
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+static int
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+_is_blkext_major (int major)
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+{
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+ return _major_type_in_devices (major, "blkext");
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+}
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+
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#ifdef ENABLE_DEVICE_MAPPER
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static int
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_dm_task_run_wait (struct dm_task *task, uint32_t cookie)
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@@ -692,6 +699,8 @@ _device_probe_type (PedDevice* dev)
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dev->type = PED_DEVICE_LOOP;
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} else if (dev_major == MD_MAJOR) {
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dev->type = PED_DEVICE_MD;
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+ } else if (_is_blkext_major(dev_major) && dev->path && strstr(dev->path, "nvme")) {
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+ dev->type = PED_DEVICE_NVME;
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} else {
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dev->type = PED_DEVICE_UNKNOWN;
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}
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@@ -1465,6 +1474,11 @@ linux_new (const char* path)
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goto error_free_arch_specific;
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break;
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+ case PED_DEVICE_NVME:
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+ if (!init_generic (dev, _("NVMe Device")))
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+ goto error_free_arch_specific;
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+ break;
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+
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case PED_DEVICE_ATARAID:
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if (!init_generic (dev, _("ATARAID Controller")))
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goto error_free_arch_specific;
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diff --git a/parted/parted.c b/parted/parted.c
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index 06f9971..bd848c3 100644
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--- a/parted/parted.c
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+++ b/parted/parted.c
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@@ -979,7 +979,7 @@ _print_disk_info (const PedDevice *dev, const PedDisk *diskp)
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"cpqarray", "file", "ataraid", "i2o",
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"ubd", "dasd", "viodasd", "sx8", "dm",
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"xvd", "sd/mmc", "virtblk", "aoe",
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- "md", "loopback"};
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+ "md", "loopback", "nvme"};
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char* start = ped_unit_format (dev, 0);
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PedUnit default_unit = ped_unit_get_default ();
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--
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2.7.4
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