qemu-kvm/SOURCES/kvm-qga-commands-posix-Rework-build_guest_fsinfo_for_rea.patch

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4.9 KiB
Diff

From 84bc86fdf47729bca77957a04161862ffbedbf2f Mon Sep 17 00:00:00 2001
From: Thomas Huth <thuth@redhat.com>
Date: Fri, 2 Oct 2020 10:17:40 -0400
Subject: [PATCH 01/14] qga/commands-posix: Rework
build_guest_fsinfo_for_real_device() function
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
Message-id: <20201002101742.249169-2-thuth@redhat.com>
Patchwork-id: 98527
O-Subject: [RHEL-8.4.0 qemu-kvm PATCH 1/3] qga/commands-posix: Rework build_guest_fsinfo_for_real_device() function
Bugzilla: 1755075
RH-Acked-by: Danilo de Paula <ddepaula@redhat.com>
RH-Acked-by: Cornelia Huck <cohuck@redhat.com>
RH-Acked-by: David Hildenbrand <david@redhat.com>
We are going to support non-PCI devices soon. For this we need to split
the generic GuestDiskAddress and GuestDiskAddressList memory allocation
and list chaining into a separate function first.
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>
(cherry picked from commit d9fe4f0fea31f0560dc40d3576bc6c48ad97109f)
Signed-off-by: Danilo C. L. de Paula <ddepaula@redhat.com>
---
qga/commands-posix.c | 65 ++++++++++++++++++++++++++++----------------
1 file changed, 41 insertions(+), 24 deletions(-)
diff --git a/qga/commands-posix.c b/qga/commands-posix.c
index 1c1a165dae..99d6b1c8c1 100644
--- a/qga/commands-posix.c
+++ b/qga/commands-posix.c
@@ -865,28 +865,30 @@ static int build_hosts(char const *syspath, char const *host, bool ata,
return i;
}
-/* Store disk device info specified by @sysfs into @fs */
-static void build_guest_fsinfo_for_real_device(char const *syspath,
- GuestFilesystemInfo *fs,
- Error **errp)
+/*
+ * Store disk device info for devices on the PCI bus.
+ * Returns true if information has been stored, or false for failure.
+ */
+static bool build_guest_fsinfo_for_pci_dev(char const *syspath,
+ GuestDiskAddress *disk,
+ Error **errp)
{
unsigned int pci[4], host, hosts[8], tgt[3];
int i, nhosts = 0, pcilen;
- GuestDiskAddress *disk;
- GuestPCIAddress *pciaddr;
- GuestDiskAddressList *list = NULL;
+ GuestPCIAddress *pciaddr = disk->pci_controller;
bool has_ata = false, has_host = false, has_tgt = false;
char *p, *q, *driver = NULL;
#ifdef CONFIG_LIBUDEV
struct udev *udev = NULL;
struct udev_device *udevice = NULL;
#endif
+ bool ret = false;
p = strstr(syspath, "/devices/pci");
if (!p || sscanf(p + 12, "%*x:%*x/%x:%x:%x.%x%n",
pci, pci + 1, pci + 2, pci + 3, &pcilen) < 4) {
g_debug("only pci device is supported: sysfs path '%s'", syspath);
- return;
+ return false;
}
p += 12 + pcilen;
@@ -907,7 +909,7 @@ static void build_guest_fsinfo_for_real_device(char const *syspath,
}
g_debug("unsupported driver or sysfs path '%s'", syspath);
- return;
+ return false;
}
p = strstr(syspath, "/target");
@@ -933,18 +935,11 @@ static void build_guest_fsinfo_for_real_device(char const *syspath,
}
}
- pciaddr = g_malloc0(sizeof(*pciaddr));
pciaddr->domain = pci[0];
pciaddr->bus = pci[1];
pciaddr->slot = pci[2];
pciaddr->function = pci[3];
- disk = g_malloc0(sizeof(*disk));
- disk->pci_controller = pciaddr;
-
- list = g_malloc0(sizeof(*list));
- list->value = disk;
-
#ifdef CONFIG_LIBUDEV
udev = udev_new();
udevice = udev_device_new_from_syspath(udev, syspath);
@@ -1022,21 +1017,43 @@ static void build_guest_fsinfo_for_real_device(char const *syspath,
goto cleanup;
}
- list->next = fs->disk;
- fs->disk = list;
- goto out;
+ ret = true;
cleanup:
- if (list) {
- qapi_free_GuestDiskAddressList(list);
- }
-out:
g_free(driver);
#ifdef CONFIG_LIBUDEV
udev_unref(udev);
udev_device_unref(udevice);
#endif
- return;
+ return ret;
+}
+
+/* Store disk device info specified by @sysfs into @fs */
+static void build_guest_fsinfo_for_real_device(char const *syspath,
+ GuestFilesystemInfo *fs,
+ Error **errp)
+{
+ GuestDiskAddress *disk;
+ GuestPCIAddress *pciaddr;
+ GuestDiskAddressList *list = NULL;
+ bool has_hwinf;
+
+ pciaddr = g_new0(GuestPCIAddress, 1);
+
+ disk = g_new0(GuestDiskAddress, 1);
+ disk->pci_controller = pciaddr;
+
+ list = g_new0(GuestDiskAddressList, 1);
+ list->value = disk;
+
+ has_hwinf = build_guest_fsinfo_for_pci_dev(syspath, disk, errp);
+
+ if (has_hwinf) {
+ list->next = fs->disk;
+ fs->disk = list;
+ } else {
+ qapi_free_GuestDiskAddressList(list);
+ }
}
static void build_guest_fsinfo_for_device(char const *devpath,
--
2.27.0