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qga/commands-posix: Move the udev code from the pci to the generic function

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The libudev-related code is independent from the other pci-related code
and can be re-used for non-pci devices (like ccw devices on s390x). Thus
move this part to the generic function.

Buglink: https://bugzilla.redhat.com/show_bug.cgi?id=1755075
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 06:40:27 +02:00 committed by Michael Roth
parent d9fe4f0fea
commit 43dadc431b
1 changed files with 33 additions and 29 deletions
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62
qga/commands-posix.c
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@ -874,10 +874,6 @@ static bool build_guest_fsinfo_for_pci_dev(char const *syspath,
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");
@ -936,26 +932,6 @@ static bool build_guest_fsinfo_for_pci_dev(char const *syspath,
pciaddr->slot = pci[2];
pciaddr->function = pci[3];
#ifdef CONFIG_LIBUDEV
udev = udev_new();
udevice = udev_device_new_from_syspath(udev, syspath);
if (udev == NULL || udevice == NULL) {
g_debug("failed to query udev");
} else {
const char *devnode, *serial;
devnode = udev_device_get_devnode(udevice);
if (devnode != NULL) {
disk->dev = g_strdup(devnode);
disk->has_dev = true;
}
serial = udev_device_get_property_value(udevice, "ID_SERIAL");
if (serial != NULL && *serial != 0) {
disk->serial = g_strdup(serial);
disk->has_serial = true;
}
}
#endif
if (strcmp(driver, "ata_piix") == 0) {
/* a host per ide bus, target*:0:<unit>:0 */
if (!has_host || !has_tgt) {
@ -1017,10 +993,6 @@ static bool build_guest_fsinfo_for_pci_dev(char const *syspath,
cleanup:
g_free(driver);
#ifdef CONFIG_LIBUDEV
udev_unref(udev);
udev_device_unref(udevice);
#endif
return ret;
}
@ -1033,18 +1005,50 @@ static void build_guest_fsinfo_for_real_device(char const *syspath,
GuestPCIAddress *pciaddr;
GuestDiskAddressList *list = NULL;
bool has_hwinf;
#ifdef CONFIG_LIBUDEV
struct udev *udev = NULL;
struct udev_device *udevice = NULL;
#endif
pciaddr = g_new0(GuestPCIAddress, 1);
pciaddr->domain = -1; /* -1 means field is invalid */
pciaddr->bus = -1;
pciaddr->slot = -1;
pciaddr->function = -1;
disk = g_new0(GuestDiskAddress, 1);
disk->pci_controller = pciaddr;
disk->bus_type = GUEST_DISK_BUS_TYPE_UNKNOWN;
list = g_new0(GuestDiskAddressList, 1);
list->value = disk;
#ifdef CONFIG_LIBUDEV
udev = udev_new();
udevice = udev_device_new_from_syspath(udev, syspath);
if (udev == NULL || udevice == NULL) {
g_debug("failed to query udev");
} else {
const char *devnode, *serial;
devnode = udev_device_get_devnode(udevice);
if (devnode != NULL) {
disk->dev = g_strdup(devnode);
disk->has_dev = true;
}
serial = udev_device_get_property_value(udevice, "ID_SERIAL");
if (serial != NULL && *serial != 0) {
disk->serial = g_strdup(serial);
disk->has_serial = true;
}
}
udev_unref(udev);
udev_device_unref(udevice);
#endif
has_hwinf = build_guest_fsinfo_for_pci_dev(syspath, disk, errp);
if (has_hwinf) {
if (has_hwinf || disk->has_dev || disk->has_serial) {
list->next = fs->disk;
fs->disk = list;
} else {