#include "device-private.h"
#include "device-util.h"
#include "libudev-device-internal.h"
-#include "libudev-private.h"
+#include "libudev-list-internal.h"
#include "parse-util.h"
+#include "time-util.h"
/**
* SECTION:libudev-device
* a unique name inside that subsystem.
*/
+/**
+ * udev_device:
+ *
+ * Opaque object representing one kernel sys device.
+ */
+struct udev_device {
+ struct udev *udev;
+
+ /* real device object */
+ sd_device *device;
+
+ /* legacy */
+ unsigned n_ref;
+
+ struct udev_device *parent;
+ bool parent_set;
+
+ struct udev_list *properties;
+ uint64_t properties_generation;
+ struct udev_list *tags;
+ uint64_t tags_generation;
+ struct udev_list *devlinks;
+ uint64_t devlinks_generation;
+ bool properties_read:1;
+ bool tags_read:1;
+ bool devlinks_read:1;
+ struct udev_list *sysattrs;
+ bool sysattrs_read;
+};
+
/**
* udev_device_get_seqnum:
* @udev_device: udev device
*
* Returns: the kernel event sequence number, or 0 if there is no sequence number available.
**/
-_public_ unsigned long long int udev_device_get_seqnum(struct udev_device *udev_device) {
- const char *seqnum;
- unsigned long long ret;
- int r;
+_public_ unsigned long long udev_device_get_seqnum(struct udev_device *udev_device) {
+ uint64_t seqnum;
assert_return_errno(udev_device, 0, EINVAL);
- r = sd_device_get_property_value(udev_device->device, "SEQNUM", &seqnum);
- if (r == -ENOENT)
- return 0;
- else if (r < 0) {
- errno = -r;
- return 0;
- }
-
- r = safe_atollu(seqnum, &ret);
- if (r < 0) {
- errno = -r;
+ if (device_get_seqnum(udev_device->device, &seqnum) < 0)
return 0;
- }
- return ret;
+ return seqnum;
}
/**
assert_return_errno(udev_device, makedev(0, 0), EINVAL);
r = sd_device_get_devnum(udev_device->device, &devnum);
- if (r < 0) {
- if (r != -ENOENT)
- errno = -r;
+ if (r == -ENOENT)
return makedev(0, 0);
- }
+ if (r < 0)
+ return_with_errno(makedev(0, 0), r);
return devnum;
}
assert_return_errno(udev_device, NULL, EINVAL);
r = sd_device_get_driver(udev_device->device, &driver);
- if (r < 0) {
- errno = -r;
- return NULL;
- }
+ if (r < 0)
+ return_with_errno(NULL, r);
return driver;
}
assert_return_errno(udev_device, NULL, EINVAL);
r = sd_device_get_devtype(udev_device->device, &devtype);
- if (r < 0) {
- if (r != -ENOENT)
- errno = -r;
+ if (r == -ENOENT)
return NULL;
- }
+ if (r < 0)
+ return_with_errno(NULL, r);
return devtype;
}
assert_return_errno(udev_device, NULL, EINVAL);
r = sd_device_get_subsystem(udev_device->device, &subsystem);
- if (r < 0) {
- errno = -r;
- return NULL;
- } else if (!subsystem)
- errno = ENODATA;
+ if (r < 0)
+ return_with_errno(NULL, r);
return subsystem;
}
* Returns: the property string, or #NULL if there is no such property.
**/
_public_ const char *udev_device_get_property_value(struct udev_device *udev_device, const char *key) {
- const char *value = NULL;
+ const char *value;
int r;
assert_return_errno(udev_device && key, NULL, EINVAL);
r = sd_device_get_property_value(udev_device->device, key, &value);
- if (r < 0) {
- errno = -r;
- return NULL;
- }
+ if (r < 0)
+ return_with_errno(NULL, r);
return value;
}
struct udev_device *udev_device_new(struct udev *udev, sd_device *device) {
+ _cleanup_(udev_list_freep) struct udev_list *properties = NULL, *tags = NULL, *sysattrs = NULL, *devlinks = NULL;
struct udev_device *udev_device;
assert(device);
+ properties = udev_list_new(true);
+ if (!properties)
+ return_with_errno(NULL, ENOMEM);
+ tags = udev_list_new(true);
+ if (!tags)
+ return_with_errno(NULL, ENOMEM);
+ sysattrs = udev_list_new(true);
+ if (!sysattrs)
+ return_with_errno(NULL, ENOMEM);
+ devlinks = udev_list_new(true);
+ if (!devlinks)
+ return_with_errno(NULL, ENOMEM);
+
udev_device = new(struct udev_device, 1);
- if (!udev_device) {
- errno = ENOMEM;
- return NULL;
- }
+ if (!udev_device)
+ return_with_errno(NULL, ENOMEM);
*udev_device = (struct udev_device) {
.n_ref = 1,
.udev = udev,
.device = sd_device_ref(device),
+ .properties = TAKE_PTR(properties),
+ .tags = TAKE_PTR(tags),
+ .sysattrs = TAKE_PTR(sysattrs),
+ .devlinks = TAKE_PTR(devlinks),
};
- udev_list_init(udev, &udev_device->properties, true);
- udev_list_init(udev, &udev_device->tags, true);
- udev_list_init(udev, &udev_device->sysattrs, true);
- udev_list_init(udev, &udev_device->devlinks, true);
-
return udev_device;
}
int r;
r = sd_device_new_from_syspath(&device, syspath);
- if (r < 0) {
- errno = -r;
- return NULL;
- }
+ if (r < 0)
+ return_with_errno(NULL, r);
return udev_device_new(udev, device);
}
int r;
r = sd_device_new_from_devnum(&device, type, devnum);
- if (r < 0) {
- errno = -r;
- return NULL;
- }
+ if (r < 0)
+ return_with_errno(NULL, r);
return udev_device_new(udev, device);
}
int r;
r = sd_device_new_from_device_id(&device, id);
- if (r < 0) {
- errno = -r;
- return NULL;
- }
+ if (r < 0)
+ return_with_errno(NULL, r);
return udev_device_new(udev, device);
}
int r;
r = sd_device_new_from_subsystem_sysname(&device, subsystem, sysname);
- if (r < 0) {
- errno = -r;
- return NULL;
- }
+ if (r < 0)
+ return_with_errno(NULL, r);
return udev_device_new(udev, device);
}
int r;
r = device_new_from_strv(&device, environ);
- if (r < 0) {
- errno = -r;
- return NULL;
- }
+ if (r < 0)
+ return_with_errno(NULL, r);
return udev_device_new(udev, device);
}
assert_return_errno(child, NULL, EINVAL);
r = sd_device_get_parent(child->device, &parent);
- if (r < 0) {
- errno = -r;
- return NULL;
- }
+ if (r < 0)
+ return_with_errno(NULL, r);
return udev_device_new(child->udev, parent);
}
/* 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;
- }
+ if (r < 0)
+ return_with_errno(NULL, r);
/* then walk the chain of udev_device parents until the corresponding
one is found */
- while ((udev_device = udev_device_get_parent(udev_device))) {
+ while ((udev_device = udev_device_get_parent(udev_device)))
if (udev_device->device == parent)
return udev_device;
- }
- errno = ENOENT;
- return NULL;
+ return_with_errno(NULL, ENOENT);
}
/**
sd_device_unref(udev_device->device);
udev_device_unref(udev_device->parent);
- udev_list_cleanup(&udev_device->properties);
- udev_list_cleanup(&udev_device->sysattrs);
- udev_list_cleanup(&udev_device->tags);
- udev_list_cleanup(&udev_device->devlinks);
+ udev_list_free(udev_device->properties);
+ udev_list_free(udev_device->sysattrs);
+ udev_list_free(udev_device->tags);
+ udev_list_free(udev_device->devlinks);
return mfree(udev_device);
}
assert_return_errno(udev_device, NULL, EINVAL);
r = sd_device_get_devpath(udev_device->device, &devpath);
- if (r < 0) {
- errno = -r;
- return NULL;
- }
+ if (r < 0)
+ return_with_errno(NULL, r);
return devpath;
}
assert_return_errno(udev_device, NULL, EINVAL);
r = sd_device_get_syspath(udev_device->device, &syspath);
- if (r < 0) {
- errno = -r;
- return NULL;
- }
+ if (r < 0)
+ return_with_errno(NULL, r);
return syspath;
}
assert_return_errno(udev_device, NULL, EINVAL);
r = sd_device_get_sysname(udev_device->device, &sysname);
- if (r < 0) {
- errno = -r;
- return NULL;
- }
+ if (r < 0)
+ return_with_errno(NULL, r);
return sysname;
}
assert_return_errno(udev_device, NULL, EINVAL);
r = sd_device_get_sysnum(udev_device->device, &sysnum);
- if (r < 0) {
- if (r != -ENOENT)
- errno = -r;
+ if (r == -ENOENT)
return NULL;
- }
+ if (r < 0)
+ return_with_errno(NULL, r);
return sysnum;
}
assert_return_errno(udev_device, NULL, EINVAL);
r = sd_device_get_devname(udev_device->device, &devnode);
- if (r < 0) {
- errno = -r;
- return NULL;
- }
+ if (r < 0)
+ return_with_errno(NULL, r);
return devnode;
}
!udev_device->devlinks_read) {
const char *devlink;
- udev_list_cleanup(&udev_device->devlinks);
+ udev_list_cleanup(udev_device->devlinks);
FOREACH_DEVICE_DEVLINK(udev_device->device, devlink)
- udev_list_entry_add(&udev_device->devlinks, devlink, NULL);
+ if (!udev_list_entry_add(udev_device->devlinks, devlink, NULL))
+ return_with_errno(NULL, ENOMEM);
udev_device->devlinks_read = true;
udev_device->devlinks_generation = device_get_devlinks_generation(udev_device->device);
}
- return udev_list_get_entry(&udev_device->devlinks);
+ return udev_list_get_entry(udev_device->devlinks);
}
/**
!udev_device->properties_read) {
const char *key, *value;
- udev_list_cleanup(&udev_device->properties);
+ udev_list_cleanup(udev_device->properties);
FOREACH_DEVICE_PROPERTY(udev_device->device, key, value)
- udev_list_entry_add(&udev_device->properties, key, value);
+ if (!udev_list_entry_add(udev_device->properties, key, value))
+ return_with_errno(NULL, ENOMEM);
udev_device->properties_read = true;
udev_device->properties_generation = device_get_properties_generation(udev_device->device);
}
- return udev_list_get_entry(&udev_device->properties);
+ return udev_list_get_entry(udev_device->properties);
}
/**
* @udev_device: udev device
*
* This is only valid if the device was received through a monitor. Devices read from
- * sys do not have an action string. Usual actions are: add, remove, change, online,
- * offline.
+ * sys do not have an action string. Usual actions are: add, remove, change, move,
+ * online, offline.
*
* Returns: the kernel action value, or #NULL if there is no action value available.
**/
_public_ const char *udev_device_get_action(struct udev_device *udev_device) {
- const char *action = NULL;
- int r;
+ DeviceAction action;
assert_return_errno(udev_device, NULL, EINVAL);
- r = sd_device_get_property_value(udev_device->device, "ACTION", &action);
- if (r < 0 && r != -ENOENT) {
- errno = -r;
+ if (device_get_action(udev_device->device, &action) < 0)
return NULL;
- }
- return action;
+ return device_action_to_string(action);
}
/**
assert_return(udev_device, -EINVAL);
r = sd_device_get_usec_since_initialized(udev_device->device, &ts);
- if (r < 0) {
- errno = -r;
- return 0;
- }
+ if (r < 0)
+ return_with_errno(0, r);
return ts;
}
assert_return_errno(udev_device, NULL, EINVAL);
r = sd_device_get_sysattr_value(udev_device->device, sysattr, &value);
- if (r < 0) {
- errno = -r;
- return NULL;
- }
+ if (r < 0)
+ return_with_errno(NULL, r);
return value;
}
if (!udev_device->sysattrs_read) {
const char *sysattr;
- udev_list_cleanup(&udev_device->sysattrs);
+ udev_list_cleanup(udev_device->sysattrs);
FOREACH_DEVICE_SYSATTR(udev_device->device, sysattr)
- udev_list_entry_add(&udev_device->sysattrs, sysattr, NULL);
+ if (!udev_list_entry_add(udev_device->sysattrs, sysattr, NULL))
+ return_with_errno(NULL, ENOMEM);
udev_device->sysattrs_read = true;
}
- return udev_list_get_entry(&udev_device->sysattrs);
+ return udev_list_get_entry(udev_device->sysattrs);
}
/**
* Returns: 1 if the device is set up. 0 otherwise.
**/
_public_ int udev_device_get_is_initialized(struct udev_device *udev_device) {
- int r, initialized;
+ int r;
assert_return(udev_device, -EINVAL);
- r = sd_device_get_is_initialized(udev_device->device, &initialized);
- if (r < 0) {
- errno = -r;
- return 0;
- }
+ r = sd_device_get_is_initialized(udev_device->device);
+ if (r < 0)
+ return_with_errno(0, r);
- return initialized;
+ return r;
}
/**
!udev_device->tags_read) {
const char *tag;
- udev_list_cleanup(&udev_device->tags);
+ udev_list_cleanup(udev_device->tags);
FOREACH_DEVICE_TAG(udev_device->device, tag)
- udev_list_entry_add(&udev_device->tags, tag, NULL);
+ if (!udev_list_entry_add(udev_device->tags, tag, NULL))
+ return_with_errno(NULL, ENOMEM);
udev_device->tags_read = true;
udev_device->tags_generation = device_get_tags_generation(udev_device->device);
}
- return udev_list_get_entry(&udev_device->tags);
+ return udev_list_get_entry(udev_device->tags);
}
/**
return sd_device_has_tag(udev_device->device, tag) > 0;
}
+
+sd_device *udev_device_get_sd_device(struct udev_device *udev_device) {
+ assert(udev_device);
+
+ return udev_device->device;
+}