@@ -861,28 +861,30 @@ 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,
+ GuestPCIAddress *pciaddr,
+ Error **errp)
{
unsigned int pci[4], host, hosts[8], tgt[3];
int i, nhosts = 0, pcilen;
- GuestDiskAddress *disk;
- GuestPCIAddress *pciaddr;
- GuestDiskAddressList *list = NULL;
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;
@@ -903,7 +905,7 @@ 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");
@@ -929,18 +931,11 @@ 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);
@@ -1018,21 +1013,43 @@ 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_pci;
+
+ pciaddr = g_malloc(sizeof(*pciaddr));
+ memset(pciaddr, -1, sizeof(*pciaddr)); /* -1 means field is invalid */
+
+ disk = g_malloc0(sizeof(*disk));
+ disk->pci_controller = pciaddr;
+
+ list = g_malloc0(sizeof(*list));
+ list->value = disk;
+
+ has_pci = build_guest_fsinfo_for_pci_dev(syspath, disk, pciaddr, errp);
+ if (has_pci) {
+ list->next = fs->disk;
+ fs->disk = list;
+ } else {
+ qapi_free_GuestDiskAddressList(list);
+ }
}
static void build_guest_fsinfo_for_device(char const *devpath,
We are going to support non-PCI devices soon. For this we need to split the generic GuestDiskAddress and GuestDiskAddressList memory allocation and chaining into a separate function first. Signed-off-by: Thomas Huth <thuth@redhat.com> --- qga/commands-posix.c | 65 ++++++++++++++++++++++++++++---------------- 1 file changed, 41 insertions(+), 24 deletions(-)