static int names_pci(struct udev_device *dev, struct netnames *names) {
struct udev_device *parent;
assert(dev);
assert(names);
parent = udev_device_get_parent(dev);
/* there can only ever be one virtio bus per parent device, so we can
safely ignore any virtio buses. see
<http://lists.linuxfoundation.org/pipermail/virtualization/2015-August/030331.html> */
while (parent && streq_ptr("virtio", udev_device_get_subsystem(parent)))
parent = udev_device_get_parent(parent);
if (!parent)
return -ENOENT;
/* check if our direct parent is a PCI device with no other bus in-between */
if (streq_ptr("pci", udev_device_get_subsystem(parent))) {
names->type = NET_PCI;
names->pcidev = parent;
} else {
names->pcidev = udev_device_get_parent_with_subsystem_devtype(dev, "pci", NULL);
if (!names->pcidev)
return -ENOENT;
}
dev_pci_onboard(dev, names);
dev_pci_slot(dev, names);
return 0;
}
EAPI Eina_List *
eeze_udev_syspath_get_parents(const char *syspath)
{
_udev_device *child, *parent, *device;
const char *path;
Eina_List *devlist = NULL;
if (!syspath)
return NULL;
if (!(device = _new_device(syspath)))
return NULL;
if (!(parent = udev_device_get_parent(device)))
return NULL;
for (; parent; child = parent, parent = udev_device_get_parent(child))
{
path = udev_device_get_syspath(parent);
devlist = eina_list_append(devlist, eina_stringshare_add(path));
}
udev_device_unref(device);
return devlist;
}
void Storage::checkDevice(int fd) {
PowerManagerLock* powerLock = PowerManager::getNewLock(this);
powerLock->activate();
qDebug() << Q_FUNC_INFO << "FD: "<< fd;
struct udev_device *dev;
dev = udev_monitor_receive_device(udev_monitor);
if (dev)
{
QString device = udev_device_get_devnode(dev);
QString path = udev_device_get_devpath(dev);
QString action = udev_device_get_action(dev);
QString devtype = udev_device_get_devtype(dev);
QString sysname("/dev/");
sysname += QString(udev_device_get_sysname(dev));
QString parent = udev_device_get_devpath( udev_device_get_parent (dev));
if (sysname.contains(QRegExp("mmcblk[0-9]\\d*")) || sysname.contains(QRegExp("mmcblk[0-9]")))
{
qDebug() << "Got " << path << ":" << action;
qDebug() << " Got Device";
qDebug() << " Node: " << udev_device_get_devnode(dev);
qDebug() << " Subsystem: "<< udev_device_get_subsystem(dev);
qDebug() << " Devtype: " << devtype;
qDebug() << " Action: " << action;
qDebug() << " Sysname: " << sysname;
qDebug() << " sysnum: " << udev_device_get_sysnum (dev);
qDebug() << " parent: " << parent;
processRemovableUdevEvents(devtype, path, sysname, action);
}
udev_device_unref(dev);
}
delete powerLock;
}
/**
* Walks up the device chain starting at @p syspath,
* checking each device for @p sysattr with (optional) @p value.
*
* @param syspath The /sys/ path of the device to start at, with or without the /sys/
* @param sysattr The attribute to find
* @param value OPTIONAL: The value that @p sysattr should have, or NULL
*
* @return If the sysattr (with value) is found, returns TRUE. Else, false.
*/
EAPI Eina_Bool
eeze_udev_walk_check_sysattr(const char *syspath,
const char *sysattr,
const char *value)
{
_udev_device *device, *child, *parent;
Eina_Bool ret = EINA_FALSE;
const char *test = NULL;
if (!udev)
return EINA_FALSE;
if (!(device = _new_device(syspath)))
return EINA_FALSE;
for (parent = device; parent;
child = parent, parent = udev_device_get_parent(child))
{
if (!(test = udev_device_get_sysattr_value(parent, sysattr)))
continue;
if ((value && (!strcmp(test, value))) || (!value))
{
ret = EINA_TRUE;
break;
}
}
udev_device_unref(device);
return ret;
}
/**
* Walks up the device chain starting at @p syspath,
* checking each device for @p sysattr, and returns the value if found.
*
* @param syspath The /sys/ path of the device to start at, with or without the /sys/
* @param sysattr The attribute to find
*
* @return The stringshared value of @p sysattr if found, or NULL
*/
EAPI const char *
eeze_udev_walk_get_sysattr(const char *syspath,
const char *sysattr)
{
_udev_device *device, *child, *parent;
const char *test = NULL;
if (!syspath)
return NULL;
if (!(device = _new_device(syspath)))
return NULL;
for (parent = device; parent;
child = parent, parent = udev_device_get_parent(child))
{
if ((test = udev_device_get_sysattr_value(parent, sysattr)))
{
test = eina_stringshare_add(test);
udev_device_unref(device);
return test;
}
}
udev_device_unref(device);
return NULL;
}
/**
* udev_device_get_parent_with_subsystem_devtype:
* @udev_device: udev device to start searching from
* @subsystem: the subsystem of the device
* @devtype: the type (DEVTYPE) of the device
*
* Find the next parent device, with a matching subsystem and devtype
* value, and fill in information from the sys device and the udev
* database entry.
*
* If devtype is #NULL, only subsystem is checked, and any devtype will
* match.
*
* Returned device is not referenced. It is attached to the child
* device, and will be cleaned up when the child device is cleaned up.
*
* It can be called as many times as needed, without caring about
* references.
*
* Returns: a new udev device, or #NULL if no matching parent exists.
**/
_public_ struct udev_device *udev_device_get_parent_with_subsystem_devtype(struct udev_device *udev_device, const char *subsystem, const char *devtype)
{
sd_device *parent;
int r;
assert_return_errno(udev_device, NULL, EINVAL);
/* this relies on the fact that finding the subdevice of a parent or the
parent of a subdevice commute */
/* first find the correct sd_device */
r = sd_device_get_parent_with_subsystem_devtype(udev_device->device, subsystem, devtype, &parent);
if (r < 0) {
errno = -r;
return NULL;
}
/* then walk the chain of udev_device parents until the correspanding
one is found */
while ((udev_device = udev_device_get_parent(udev_device))) {
if (udev_device->device == parent)
return udev_device;
}
errno = ENOENT;
return NULL;
}
static struct udev_device *handle_scsi_iscsi(struct udev_device *parent, char **path)
{
struct udev *udev = udev_device_get_udev(parent);
struct udev_device *transportdev;
struct udev_device *sessiondev = NULL;
const char *target;
char *connname;
struct udev_device *conndev = NULL;
const char *addr;
const char *port;
/* find iscsi session */
transportdev = parent;
while (1) {
transportdev = udev_device_get_parent(transportdev);
if (transportdev == NULL)
return NULL;
if (strncmp(udev_device_get_sysname(transportdev), "session", 7) == 0)
break;
}
if (transportdev == NULL)
return NULL;
/* find iscsi session device */
sessiondev = udev_device_new_from_subsystem_sysname(udev, "iscsi_session", udev_device_get_sysname(transportdev));
if (sessiondev == NULL)
return NULL;
target = udev_device_get_sysattr_value(sessiondev, "targetname");
if (target == NULL) {
parent = NULL;
goto out;
}
if (asprintf(&connname, "connection%s:0", udev_device_get_sysnum(transportdev)) < 0) {
parent = NULL;
goto out;
}
conndev = udev_device_new_from_subsystem_sysname(udev, "iscsi_connection", connname);
free(connname);
if (conndev == NULL) {
parent = NULL;
goto out;
}
addr = udev_device_get_sysattr_value(conndev, "persistent_address");
port = udev_device_get_sysattr_value(conndev, "persistent_port");
if (addr == NULL || port == NULL) {
parent = NULL;
goto out;
}
path_prepend(path, "ip-%s:%s-iscsi-%s-lun-%s", addr, port, target, udev_device_get_sysnum(parent));
out:
udev_device_unref(sessiondev);
udev_device_unref(conndev);
return parent;
}
static int names_pci(struct udev_device *dev, struct netnames *names) {
struct udev_device *parent;
static int do_virtio = -1;
if (do_virtio < 0) {
_cleanup_free_ char *value = NULL;
int n = 0;
do_virtio = 0;
if (get_proc_cmdline_key("net.ifnames", NULL) > 0)
do_virtio = 1;
else if (get_proc_cmdline_key("net.ifnames=", &value) > 0) {
safe_atoi(value, &n);
if (n > 0)
do_virtio = 1;
}
}
parent = udev_device_get_parent(dev);
/* there can only ever be one virtio bus per parent device, so we can
safely ignore any virtio buses. see
<http://lists.linuxfoundation.org/pipermail/virtualization/2015-August/030331.html> */
if (do_virtio > 0)
while (parent && streq_ptr("virtio", udev_device_get_subsystem(parent)))
parent = udev_device_get_parent(parent);
if (!parent)
return -ENOENT;
/* check if our direct parent is a PCI device with no other bus in-between */
if (streq_ptr("pci", udev_device_get_subsystem(parent))) {
names->type = NET_PCI;
names->pcidev = parent;
} else {
names->pcidev = udev_device_get_parent_with_subsystem_devtype(dev, "pci", NULL);
if (!names->pcidev)
return -ENOENT;
}
dev_pci_onboard(dev, names);
dev_pci_slot(dev, names);
return 0;
}
UdevDevice UdevDevice::getParent(void)
{
/* Get the parent device: */
udev_device* parent=udev_device_get_parent(device);
/* The parent device is not supposed to be unref'ed, so let's explicitly ref it here so that a later unref won't destroy it: */
if(parent!=0)
udev_device_ref(parent);
return UdevDevice(parent);
}
static
int read_usb_vudc_device(struct udev_device *sdev, struct usbip_usb_device *dev)
{
const char *path, *name;
char filepath[SYSFS_PATH_MAX];
struct usb_device_descriptor descr;
unsigned i;
FILE *fd = NULL;
struct udev_device *plat;
const char *speed;
int ret = 0;
plat = udev_device_get_parent(sdev);
path = udev_device_get_syspath(plat);
snprintf(filepath, SYSFS_PATH_MAX, "%s/%s",
path, VUDC_DEVICE_DESCR_FILE);
fd = fopen(filepath, "r");
if (!fd)
return -1;
ret = fread((char *) &descr, sizeof(descr), 1, fd);
if (ret < 0)
return -1;
fclose(fd);
copy_descr_attr(dev, &descr, bDeviceClass);
copy_descr_attr(dev, &descr, bDeviceSubClass);
copy_descr_attr(dev, &descr, bDeviceProtocol);
copy_descr_attr(dev, &descr, bNumConfigurations);
copy_descr_attr16(dev, &descr, idVendor);
copy_descr_attr16(dev, &descr, idProduct);
copy_descr_attr16(dev, &descr, bcdDevice);
strncpy(dev->path, path, SYSFS_PATH_MAX);
dev->speed = USB_SPEED_UNKNOWN;
speed = udev_device_get_sysattr_value(sdev, "current_speed");
if (speed) {
for (i = 0; i < ARRAY_SIZE(speed_names); i++) {
if (!strcmp(speed_names[i].name, speed)) {
dev->speed = speed_names[i].speed;
break;
}
}
}
/* Only used for user output, little sense to output them in general */
dev->bNumInterfaces = 0;
dev->bConfigurationValue = 0;
dev->busnum = 0;
name = udev_device_get_sysname(plat);
strncpy(dev->busid, name, SYSFS_BUS_ID_SIZE);
return 0;
}
Device Device::parent() const
{
if (!d)
return Device();
struct udev_device *p = udev_device_get_parent(d->udev);
if (!p)
return Device();
return Device(new DevicePrivate(p));
}
char *
dri2_get_driver_for_fd(int fd)
{
struct udev *udev;
struct udev_device *device, *parent;
const char *pci_id;
char *driver = NULL;
int vendor_id, chip_id, i, j;
udev = udev_new();
device = dri2_udev_device_new_from_fd(udev, fd);
if (device == NULL)
return NULL;
parent = udev_device_get_parent(device);
if (parent == NULL) {
_eglLog(_EGL_WARNING, "DRI2: could not get parent device");
goto out;
}
pci_id = udev_device_get_property_value(parent, "PCI_ID");
if (pci_id == NULL ||
sscanf(pci_id, "%x:%x", &vendor_id, &chip_id) != 2) {
_eglLog(_EGL_WARNING, "EGL-DRI2: malformed or no PCI ID");
goto out;
}
for (i = 0; driver_map[i].driver; i++) {
if (vendor_id != driver_map[i].vendor_id)
continue;
if (driver_map[i].num_chips_ids == -1) {
driver = strdup(driver_map[i].driver);
_eglLog(_EGL_DEBUG, "pci id for %d: %04x:%04x, driver %s",
fd, vendor_id, chip_id, driver);
goto out;
}
for (j = 0; j < driver_map[i].num_chips_ids; j++)
if (driver_map[i].chip_ids[j] == chip_id) {
driver = strdup(driver_map[i].driver);
_eglLog(_EGL_DEBUG, "pci id for %d: %04x:%04x, driver %s",
fd, vendor_id, chip_id, driver);
goto out;
}
}
out:
udev_device_unref(device);
udev_unref(udev);
return driver;
}
static int
libudev_get_pci_id_for_fd(int fd, int *vendor_id, int *chip_id)
{
struct udev *udev = NULL;
struct udev_device *device = NULL, *parent;
const char *pci_id;
UDEV_SYMBOL(struct udev *, udev_new, (void));
UDEV_SYMBOL(struct udev_device *, udev_device_get_parent,
(struct udev_device *));
UDEV_SYMBOL(const char *, udev_device_get_property_value,
(struct udev_device *, const char *));
UDEV_SYMBOL(struct udev_device *, udev_device_unref,
(struct udev_device *));
UDEV_SYMBOL(struct udev *, udev_unref, (struct udev *));
*chip_id = -1;
if (dlsym_failed)
return 0;
udev = udev_new();
device = udev_device_new_from_fd(udev, fd);
if (!device)
goto out;
parent = udev_device_get_parent(device);
if (parent == NULL) {
log_(_LOADER_WARNING, "MESA-LOADER: could not get parent device\n");
goto out;
}
pci_id = udev_device_get_property_value(parent, "PCI_ID");
if (pci_id == NULL) {
log_(_LOADER_INFO, "MESA-LOADER: no PCI ID\n");
*chip_id = -1;
goto out;
} else if (sscanf(pci_id, "%x:%x", vendor_id, chip_id) != 2) {
log_(_LOADER_WARNING, "MESA-LOADER: malformed PCI ID\n");
*chip_id = -1;
goto out;
}
out:
if (device)
udev_device_unref(device);
if (udev)
udev_unref(udev);
return (*chip_id >= 0);
}
/*
* Here we try to find the "modem device".
*
* In this variant we identify the "modem device" as simply the device
* that has the OFONO_DRIVER property. If the device node doesn't
* have this property itself, then we do a brute force search for it
* through the device hierarchy.
*
*/
static struct udev_device* get_serial_modem_device(struct udev_device *dev)
{
const char* driver;
while (dev) {
driver = udev_device_get_property_value(dev, "OFONO_DRIVER");
if (driver)
return dev;
dev = udev_device_get_parent(dev);
}
return NULL;
}
const char *
udev_prop_value(struct udev_device *device,
const char *prop_name)
{
struct udev_device *parent;
const char *prop_value = NULL;
parent = device;
while (parent && !prop_value) {
prop_value = udev_device_get_property_value(parent, prop_name);
parent = udev_device_get_parent(parent);
}
return prop_value;
}
static struct udev_device *skip_subsystem(struct udev_device *dev, const char *subsys)
{
struct udev_device *parent = dev;
while (parent != NULL) {
const char *subsystem;
subsystem = udev_device_get_subsystem(parent);
if (subsystem == NULL || strcmp(subsystem, subsys) != 0)
break;
dev = parent;
parent = udev_device_get_parent(parent);
}
return dev;
}
int Storage::enumerate_mmcblk_devices(struct udev *udev)
{
struct udev_enumerate *udev_enumerate;
qDebug() << Q_FUNC_INFO << ": enumerate 'block' devices";
udev_enumerate = udev_enumerate_new(udev);
if (udev_enumerate == NULL)
return -1;
udev_enumerate_add_match_subsystem(udev_enumerate,"block");
udev_enumerate_scan_devices(udev_enumerate);
struct udev_list_entry *list_entry;
udev_list_entry_foreach(list_entry, udev_enumerate_get_list_entry(udev_enumerate))
{
struct udev_device *device;
device = udev_device_new_from_syspath(udev_enumerate_get_udev(udev_enumerate),
udev_list_entry_get_name(list_entry));
if (device != NULL) {
QString sysname("/dev/");
sysname += QString(udev_device_get_sysname(device));
if (sysname.contains(QRegExp("mmcblk[1-9]\\d*")) || sysname.contains(QRegExp("mmcblk[1-9]")))
{
QString path = udev_device_get_devpath(device);
QString parent = udev_device_get_devpath( udev_device_get_parent (device));
QString action = "add";
QString devtype = udev_device_get_devtype(device);
qDebug() << "Enumerate device " << path << ":" << action;
qDebug() << " Got Device";
qDebug() << " Node: " << udev_device_get_devnode(device);
qDebug() << " Subsystem: "<< udev_device_get_subsystem(device);
qDebug() << " Devtype: " << devtype;
qDebug() << " Action: " << action;
qDebug() << " Sysname: " << sysname;
qDebug() << " sysnum: " << udev_device_get_sysnum (device);
qDebug() << " parent: " << parent;
processRemovableUdevEvents(devtype, path, sysname, action);
}
udev_device_unref(device);
}
}
udev_enumerate_unref(udev_enumerate);
return 0;
}
EAPI const char *
eeze_udev_syspath_get_parent(const char *syspath)
{
_udev_device *device, *parent;
const char *ret;
if (!syspath)
return NULL;
if (!(device = _new_device(syspath)))
return NULL;
parent = udev_device_get_parent(device);
ret = eina_stringshare_add(udev_device_get_syspath(parent));
udev_device_unref(device);
return ret;
}
static int names_ccw(struct udev_device *dev, struct netnames *names) {
struct udev_device *cdev;
const char *bus_id;
size_t bus_id_len;
int rc;
assert(dev);
assert(names);
/* Retrieve the associated CCW device */
cdev = udev_device_get_parent(dev);
if (!cdev)
return -ENOENT;
/* Network devices are always grouped CCW devices */
if (!streq_ptr("ccwgroup", udev_device_get_subsystem(cdev)))
return -ENOENT;
/* Retrieve bus-ID of the grouped CCW device. The bus-ID uniquely
* identifies the network device on the Linux on System z channel
* subsystem. Note that the bus-ID contains lowercase characters.
*/
bus_id = udev_device_get_sysname(cdev);
if (!bus_id)
return -ENOENT;
/* Check the length of the bus-ID. Rely on that the kernel provides
* a correct bus-ID; alternatively, improve this check and parse and
* verify each bus-ID part...
*/
bus_id_len = strlen(bus_id);
if (!bus_id_len || bus_id_len < 8 || bus_id_len > 9)
return -EINVAL;
/* Strip leading zeros from the bus id for aesthetic purposes. This
* keeps the ccw names stable, yet much shorter in general case of
* bus_id 0.0.0600 -> 600. This is similar to e.g. how PCI domain is
* not prepended when it is zero.
*/
bus_id += strspn(bus_id, ".0");
/* Store the CCW bus-ID for use as network device name */
rc = snprintf(names->ccw_group, sizeof(names->ccw_group), "c%s", bus_id);
if (rc >= 0 && rc < (int)sizeof(names->ccw_group))
names->type = NET_CCWGROUP;
return 0;
}
static int
linux_get_pciid_from_fd(int fd, unsigned *vendor_id, unsigned *chip_id)
{
struct udev *udev;
struct udev_device *device;
struct udev_device *parent;
const char *pci_id;
struct stat buffer;
int ret;
ret = fstat(fd, &buffer);
if (ret)
return -EINVAL;
if (!S_ISCHR(buffer.st_mode))
return -EINVAL;
udev = udev_new();
if (!udev)
return -ENOMEM;
device = udev_device_new_from_devnum(udev, 'c', buffer.st_rdev);
if (!device)
goto err_free_udev;
parent = udev_device_get_parent(device);
if (!parent)
goto err_free_device;
pci_id = udev_device_get_property_value(parent, "PCI_ID");
if (!pci_id)
goto err_free_device;
if (sscanf(pci_id, "%x:%x", vendor_id, chip_id) != 2)
goto err_free_device;
udev_device_unref(device);
udev_unref(udev);
return 0;
err_free_device:
udev_device_unref(device);
err_free_udev:
udev_unref(udev);
return -EINVAL;
}
char *
dri2_get_driver_for_fd(int fd)
{
struct udev *udev;
struct udev_device *device, *parent;
const char *pci_id;
char *driver = NULL;
int vendor_id, chip_id, i, j;
udev = udev_new();
device = dri2_udev_device_new_from_fd(udev, fd);
if (device == NULL)
return NULL;
parent = udev_device_get_parent(device);
if (parent == NULL) {
goto out;
}
pci_id = udev_device_get_property_value(parent, "PCI_ID");
if (pci_id == NULL ||
sscanf(pci_id, "%x:%x", &vendor_id, &chip_id) != 2) {
goto out;
}
for (i = 0; driver_map[i].driver; i++) {
if (vendor_id != driver_map[i].vendor_id)
continue;
if (driver_map[i].num_chips_ids == -1) {
driver = strdup(driver_map[i].driver);
goto out;
}
for (j = 0; j < driver_map[i].num_chips_ids; j++)
if (driver_map[i].chip_ids[j] == chip_id) {
driver = strdup(driver_map[i].driver);
goto out;
}
}
out:
udev_device_unref(device);
udev_unref(udev);
return driver;
}
static int udev_builtin_hwdb_search(struct udev_device *dev, struct udev_device *srcdev,
const char *subsystem, const char *prefix,
const char *filter, bool test) {
struct udev_device *d;
char s[16];
bool last = false;
int r = 0;
assert(dev);
if (!srcdev)
srcdev = dev;
for (d = srcdev; d && !last; d = udev_device_get_parent(d)) {
const char *dsubsys;
const char *modalias = NULL;
dsubsys = udev_device_get_subsystem(d);
if (!dsubsys)
continue;
/* look only at devices of a specific subsystem */
if (subsystem && !streq(dsubsys, subsystem))
continue;
modalias = udev_device_get_property_value(d, "MODALIAS");
if (streq(dsubsys, "usb") && streq_ptr(udev_device_get_devtype(d), "usb_device")) {
/* if the usb_device does not have a modalias, compose one */
if (!modalias)
modalias = modalias_usb(d, s, sizeof(s));
/* avoid looking at any parent device, they are usually just a USB hub */
last = true;
}
if (!modalias)
continue;
r = udev_builtin_hwdb_lookup(dev, prefix, modalias, filter, test);
if (r > 0)
break;
}
return r;
}
static int print_device_chain(struct udev_device *device)
{
struct udev_device *device_parent;
const char *str;
printf("\n"
"Udevadm info starts with the device specified by the devpath and then\n"
"walks up the chain of parent devices. It prints for every device\n"
"found, all possible attributes in the udev rules key format.\n"
"A rule to match, can be composed by the attributes of the device\n"
"and the attributes from one single parent device.\n"
"\n");
printf(" looking at device '%s':\n", udev_device_get_devpath(device));
printf(" KERNEL==\"%s\"\n", udev_device_get_sysname(device));
str = udev_device_get_subsystem(device);
if (str == NULL)
str = "";
printf(" SUBSYSTEM==\"%s\"\n", str);
str = udev_device_get_driver(device);
if (str == NULL)
str = "";
printf(" DRIVER==\"%s\"\n", str);
print_all_attributes(device, "ATTR");
device_parent = device;
do {
device_parent = udev_device_get_parent(device_parent);
if (device_parent == NULL)
break;
printf(" looking at parent device '%s':\n", udev_device_get_devpath(device_parent));
printf(" KERNELS==\"%s\"\n", udev_device_get_sysname(device_parent));
str = udev_device_get_subsystem(device_parent);
if (str == NULL)
str = "";
printf(" SUBSYSTEMS==\"%s\"\n", str);
str = udev_device_get_driver(device_parent);
if (str == NULL)
str = "";
printf(" DRIVERS==\"%s\"\n", str);
print_all_attributes(device_parent, "ATTRS");
} while (device_parent != NULL);
return 0;
}
/** Open the first DRM device matching the criteria */
int drm_open_matching(const char *pci_glob, int flags, int *vendor_id, int *device_id)
{
struct udev *udev;
struct udev_enumerate *e;
struct udev_device *device, *parent;
struct udev_list_entry *entry;
const char *pci_id, *path;
char *tmp;
int fd;
*vendor_id = 0;
*device_id = 0;
udev = udev_new();
if (udev == NULL) {
fprintf(stderr, "failed to initialize udev context\n");
return -1;
//abort();
}
fd = -1;
e = udev_enumerate_new(udev);
udev_enumerate_add_match_subsystem(e, "drm");
udev_enumerate_scan_devices(e);
udev_list_entry_foreach(entry, udev_enumerate_get_list_entry(e)) {
path = udev_list_entry_get_name(entry);
device = udev_device_new_from_syspath(udev, path);
parent = udev_device_get_parent(device);
/* Filter out KMS output devices. */
if (strcmp(udev_device_get_subsystem(parent), "pci") != 0)
continue;
pci_id = udev_device_get_property_value(parent, "PCI_ID");
if (fnmatch(pci_glob, pci_id, 0) != 0)
continue;
fd = open(udev_device_get_devnode(device), O_RDWR);
if (fd < 0)
continue;
if ((flags & DRM_TEST_MASTER) && !is_master(fd)) {
close(fd);
fd = -1;
continue;
}
break;
}
static int
get_sysfs_pg83(struct path *pp, unsigned char *buff, int buflen)
{
struct udev_device *parent = pp->udev;
while (parent) {
const char *subsys = udev_device_get_subsystem(parent);
if (subsys && !strncmp(subsys, "scsi", 4))
break;
parent = udev_device_get_parent(parent);
}
if (!parent || sysfs_get_vpd(parent, 0x83, buff, buflen) <= 0) {
PRINT_DEBUG("failed to read sysfs vpd pg83\n");
return -1;
}
return 0;
}
static int names_pci(struct udev_device *dev, struct netnames *names) {
struct udev_device *parent;
parent = udev_device_get_parent(dev);
if (!parent)
return -ENOENT;
/* check if our direct parent is a PCI device with no other bus in-between */
if (streq_ptr("pci", udev_device_get_subsystem(parent))) {
names->type = NET_PCI;
names->pcidev = parent;
} else {
names->pcidev = udev_device_get_parent_with_subsystem_devtype(dev, "pci", NULL);
if (!names->pcidev)
return -ENOENT;
}
dev_pci_onboard(dev, names);
dev_pci_slot(dev, names);
return 0;
}
static int get_ncontrollers(void)
{
struct dirent **namelist;
struct udev_device *platform;
int n;
platform = udev_device_get_parent(vhci_driver->hc_device);
if (platform == NULL)
return -1;
n = scandir(udev_device_get_syspath(platform), &namelist, vhci_hcd_filter, NULL);
if (n < 0)
err("scandir failed");
else {
for (int i = 0; i < n; i++)
free(namelist[i]);
free(namelist);
}
return n;
}
static int names_ccw(struct udev_device *dev, struct netnames *names) {
struct udev_device *cdev;
const char *bus_id;
size_t bus_id_len;
int rc;
assert(dev);
assert(names);
/* Retrieve the associated CCW device */
cdev = udev_device_get_parent(dev);
if (!cdev)
return -ENOENT;
/* Network devices are always grouped CCW devices */
if (!streq_ptr("ccwgroup", udev_device_get_subsystem(cdev)))
return -ENOENT;
/* Retrieve bus-ID of the grouped CCW device. The bus-ID uniquely
* identifies the network device on the Linux on System z channel
* subsystem. Note that the bus-ID contains lowercase characters.
*/
bus_id = udev_device_get_sysname(cdev);
if (!bus_id)
return -ENOENT;
/* Check the length of the bus-ID. Rely on that the kernel provides
* a correct bus-ID; alternatively, improve this check and parse and
* verify each bus-ID part...
*/
bus_id_len = strlen(bus_id);
if (!bus_id_len || bus_id_len < 8 || bus_id_len > 9)
return -EINVAL;
/* Store the CCW bus-ID for use as network device name */
rc = snprintf(names->ccw_group, sizeof(names->ccw_group), "ccw%s", bus_id);
if (rc >= 0 && rc < (int)sizeof(names->ccw_group))
names->type = NET_CCWGROUP;
return 0;
}
static boolean
find_drm_pci_id(struct pipe_loader_drm_device *ddev)
{
struct udev *udev = NULL;
struct udev_device *parent, *device = NULL;
struct stat stat;
const char *pci_id;
if (fstat(ddev->fd, &stat) < 0)
goto fail;
udev = udev_new();
if (!udev)
goto fail;
device = udev_device_new_from_devnum(udev, 'c', stat.st_rdev);
if (!device)
goto fail;
parent = udev_device_get_parent(device);
if (!parent)
goto fail;
pci_id = udev_device_get_property_value(parent, "PCI_ID");
if (!pci_id ||
sscanf(pci_id, "%x:%x", &ddev->base.u.pci.vendor_id,
&ddev->base.u.pci.chip_id) != 2)
goto fail;
return TRUE;
fail:
if (device)
udev_device_unref(device);
if (udev)
udev_unref(udev);
return FALSE;
}
static unsigned int get_baud_rate(int fd)
{
struct stat st;
unsigned int baudrate = 19200;
int id;
struct udev *udev;
struct udev_device *device, *parent;
const char *attr_id = NULL;
if (fstat(fd, &st) == -1)
return 0;
udev = udev_new();
device = udev_device_new_from_devnum(udev, 'c', st.st_rdev);
parent = device;
while (parent) {
attr_id = udev_device_get_sysattr_value(parent, "id");
if (attr_id &&
(strncmp(attr_id, "WACf", 4) == 0 || strncmp(attr_id, "FUJ", 3) == 0))
break;
parent = udev_device_get_parent(parent);
}
/* Devices up to WACf007 are 19200, newer devices are 38400. FUJ
devices are all 19200 */
if (attr_id && sscanf(attr_id, "WACf%x", &id) == 1 && id >= 0x8)
baudrate = 38400;
if (device)
udev_device_unref(device);
udev_unref(udev);
return baudrate;
}
