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qga/commands-posix: Support fsinfo for non-PCI virtio devices, too

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QEMU on s390x uses virtio via channel I/O instead of PCI by default.
Add a function to detect and provide information for virtio-scsi and
virtio-block devices here, too.

Signed-off-by: Thomas Huth <thuth@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com>
This commit is contained in:
Thomas Huth 2020-07-22 06:40:28 +02:00 committed by Michael Roth
parent 43dadc431b
commit 23843c129d
1 changed files with 41 additions and 1 deletions
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42
qga/commands-posix.c
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@ -996,6 +996,39 @@ cleanup:
return ret;
}
/*
* Store disk device info for non-PCI virtio devices (for example s390x
* channel I/O devices). Returns true if information has been stored, or
* false for failure.
*/
static bool build_guest_fsinfo_for_nonpci_virtio(char const *syspath,
GuestDiskAddress *disk,
Error **errp)
{
unsigned int tgt[3];
char *p;
if (!strstr(syspath, "/virtio") || !strstr(syspath, "/block")) {
g_debug("Unsupported virtio device '%s'", syspath);
return false;
}
p = strstr(syspath, "/target");
if (p && sscanf(p + 7, "%*u:%*u:%*u/%*u:%u:%u:%u",
&tgt[0], &tgt[1], &tgt[2]) == 3) {
/* virtio-scsi: target*:0:<target>:<unit> */
disk->bus_type = GUEST_DISK_BUS_TYPE_SCSI;
disk->bus = tgt[0];
disk->target = tgt[1];
disk->unit = tgt[2];
} else {
/* virtio-blk: 1 disk per 1 device */
disk->bus_type = GUEST_DISK_BUS_TYPE_VIRTIO;
}
return true;
}
/* Store disk device info specified by @sysfs into @fs */
static void build_guest_fsinfo_for_real_device(char const *syspath,
GuestFilesystemInfo *fs,
@ -1046,7 +1079,14 @@ static void build_guest_fsinfo_for_real_device(char const *syspath,
udev_device_unref(udevice);
#endif
has_hwinf = build_guest_fsinfo_for_pci_dev(syspath, disk, errp);
if (strstr(syspath, "/devices/pci")) {
has_hwinf = build_guest_fsinfo_for_pci_dev(syspath, disk, errp);
} else if (strstr(syspath, "/virtio")) {
has_hwinf = build_guest_fsinfo_for_nonpci_virtio(syspath, disk, errp);
} else {
g_debug("Unsupported device type for '%s'", syspath);
has_hwinf = false;
}
if (has_hwinf || disk->has_dev || disk->has_serial) {
list->next = fs->disk;