2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek#include <stdio.h>

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek#include <stdlib.h>

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek#include <stddef.h>

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek#include <unistd.h>

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek#include <stdbool.h>

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek#include <errno.h>

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek#include <string.h>

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek#include <dirent.h>

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek#include <fcntl.h>

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek#include <ctype.h>

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek#include <net/if.h>

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek#include <sys/stat.h>

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek#include <sys/ioctl.h>

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek#include <sys/socket.h>

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek#include <linux/sockios.h>

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek#include "libudev.h"

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek#include "libudev-private.h"

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmekstatic int udev_device_set_devnode(struct udev_device *udev_device, const char *devnode);

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmekstatic struct udev_list_entry *udev_device_add_property_internal(struct udev_device *udev_device, const char *key, const char *value);

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmekstruct udev_device {

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek struct udev *udev;

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek struct udev_device *parent_device;

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek char *syspath;

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek const char *devpath;

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek char *sysname;

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek const char *sysnum;

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek char *devnode;

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek mode_t devnode_mode;

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek uid_t devnode_uid;

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek gid_t devnode_gid;

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek char *subsystem;

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek char *devtype;

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek char *driver;

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek char *action;

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek char *devpath_old;

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek char *id_filename;

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek char **envp;

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek char *monitor_buf;

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek size_t monitor_buf_len;

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek struct udev_list devlinks_list;

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek struct udev_list properties_list;

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek struct udev_list sysattr_value_list;

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek struct udev_list sysattr_list;

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek struct udev_list tags_list;

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek unsigned long long int seqnum;

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek usec_t usec_initialized;

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek int devlink_priority;

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek int refcount;

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek dev_t devnum;

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek int ifindex;

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek int watch_handle;

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek int maj, min;

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek bool parent_set;

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek bool subsystem_set;

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek bool devtype_set;

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek bool devlinks_uptodate;

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek bool envp_uptodate;

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek bool tags_uptodate;

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek bool driver_set;

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek bool info_loaded;

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek bool db_loaded;

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek bool uevent_loaded;

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek bool is_initialized;

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek bool sysattr_list_read;

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek bool db_persist;

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek};

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek_public_ unsigned long long int udev_device_get_seqnum(struct udev_device *udev_device)

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek{

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek if (udev_device == NULL)

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek return 0;

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek return udev_device->seqnum;

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek}

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmekstatic int udev_device_set_seqnum(struct udev_device *udev_device, unsigned long long int seqnum)

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek{

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek char num[32];

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek udev_device->seqnum = seqnum;

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek snprintf(num, sizeof(num), "%llu", seqnum);

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek udev_device_add_property_internal(udev_device, "SEQNUM", num);

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek return 0;

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek}

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmekint udev_device_get_ifindex(struct udev_device *udev_device)

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek{

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek if (!udev_device->info_loaded)

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek udev_device_read_uevent_file(udev_device);

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek return udev_device->ifindex;

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek}

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmekstatic int udev_device_set_ifindex(struct udev_device *udev_device, int ifindex)

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek{

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek char num[32];

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek udev_device->ifindex = ifindex;

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek snprintf(num, sizeof(num), "%d", ifindex);

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek udev_device_add_property_internal(udev_device, "IFINDEX", num);

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek return 0;

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek}

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek_public_ dev_t udev_device_get_devnum(struct udev_device *udev_device)

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek{

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek if (udev_device == NULL)

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek return makedev(0, 0);

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek if (!udev_device->info_loaded)

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek udev_device_read_uevent_file(udev_device);

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek return udev_device->devnum;

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek}

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmekstatic int udev_device_set_devnum(struct udev_device *udev_device, dev_t devnum)

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek{

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek char num[32];

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek udev_device->devnum = devnum;

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek snprintf(num, sizeof(num), "%u", major(devnum));

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek udev_device_add_property_internal(udev_device, "MAJOR", num);

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek snprintf(num, sizeof(num), "%u", minor(devnum));

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek udev_device_add_property_internal(udev_device, "MINOR", num);

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek return 0;

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek}

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmekconst char *udev_device_get_devpath_old(struct udev_device *udev_device)

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek{

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek return udev_device->devpath_old;

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek}

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmekstatic int udev_device_set_devpath_old(struct udev_device *udev_device, const char *devpath_old)

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek{

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek const char *pos;

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek free(udev_device->devpath_old);

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek udev_device->devpath_old = strdup(devpath_old);

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek if (udev_device->devpath_old == NULL)

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek return -ENOMEM;

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek udev_device_add_property_internal(udev_device, "DEVPATH_OLD", udev_device->devpath_old);

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek pos = strrchr(udev_device->devpath_old, '/');

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek if (pos == NULL)

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek return -EINVAL;

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek return 0;

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek}

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek_public_ const char *udev_device_get_driver(struct udev_device *udev_device)

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek{

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek char driver[UTIL_NAME_SIZE];

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek if (udev_device == NULL)

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek return NULL;

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek if (!udev_device->driver_set) {

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek udev_device->driver_set = true;

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek if (util_get_sys_core_link_value(udev_device->udev, "driver", udev_device->syspath, driver, sizeof(driver)) > 0)

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek udev_device->driver = strdup(driver);

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek }

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek return udev_device->driver;

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek}

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmekstatic int udev_device_set_driver(struct udev_device *udev_device, const char *driver)

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek{

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek free(udev_device->driver);

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek udev_device->driver = strdup(driver);

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek if (udev_device->driver == NULL)

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek return -ENOMEM;

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek udev_device->driver_set = true;

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek udev_device_add_property_internal(udev_device, "DRIVER", udev_device->driver);

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek return 0;

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek}

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek_public_ const char *udev_device_get_devtype(struct udev_device *udev_device)

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek{

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek if (udev_device == NULL)

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek return NULL;

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek if (!udev_device->devtype_set) {

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek udev_device->devtype_set = true;

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek udev_device_read_uevent_file(udev_device);

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek }

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek return udev_device->devtype;

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek}

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmekstatic int udev_device_set_devtype(struct udev_device *udev_device, const char *devtype)

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek{

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek free(udev_device->devtype);

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek udev_device->devtype = strdup(devtype);

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek if (udev_device->devtype == NULL)

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek return -ENOMEM;

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek udev_device->devtype_set = true;

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek udev_device_add_property_internal(udev_device, "DEVTYPE", udev_device->devtype);

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek return 0;

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek}

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmekstatic int udev_device_set_subsystem(struct udev_device *udev_device, const char *subsystem)

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek{

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek free(udev_device->subsystem);

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek udev_device->subsystem = strdup(subsystem);

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek if (udev_device->subsystem == NULL)

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek return -ENOMEM;

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek udev_device->subsystem_set = true;

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek udev_device_add_property_internal(udev_device, "SUBSYSTEM", udev_device->subsystem);

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek return 0;

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek}

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek_public_ const char *udev_device_get_subsystem(struct udev_device *udev_device)

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek{

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek char subsystem[UTIL_NAME_SIZE];

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek if (udev_device == NULL)

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek return NULL;

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek if (!udev_device->subsystem_set) {

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek udev_device->subsystem_set = true;

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek /* read "subsystem" link */

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek if (util_get_sys_core_link_value(udev_device->udev, "subsystem", udev_device->syspath, subsystem, sizeof(subsystem)) > 0) {

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek udev_device_set_subsystem(udev_device, subsystem);

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek return udev_device->subsystem;

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek }

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek /* implicit names */

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek if (startswith(udev_device->devpath, "/module/")) {

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek udev_device_set_subsystem(udev_device, "module");

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek return udev_device->subsystem;

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek }

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek if (strstr(udev_device->devpath, "/drivers/") != NULL) {

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek udev_device_set_subsystem(udev_device, "drivers");

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek return udev_device->subsystem;

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek }

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek if (startswith(udev_device->devpath, "/subsystem/") ||

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek startswith(udev_device->devpath, "/class/") ||

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek startswith(udev_device->devpath, "/bus/")) {

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek udev_device_set_subsystem(udev_device, "subsystem");

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek return udev_device->subsystem;

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek }

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek }

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek return udev_device->subsystem;

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek}

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmekmode_t udev_device_get_devnode_mode(struct udev_device *udev_device)

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek{

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek if (!udev_device->info_loaded)

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek udev_device_read_uevent_file(udev_device);

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek return udev_device->devnode_mode;

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek}

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmekstatic int udev_device_set_devnode_mode(struct udev_device *udev_device, mode_t mode)

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek{

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek char num[32];

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek udev_device->devnode_mode = mode;

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek snprintf(num, sizeof(num), "%#o", mode);

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek udev_device_add_property_internal(udev_device, "DEVMODE", num);

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek return 0;

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek}

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmekuid_t udev_device_get_devnode_uid(struct udev_device *udev_device)

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek{

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek if (!udev_device->info_loaded)

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek udev_device_read_uevent_file(udev_device);

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek return udev_device->devnode_uid;

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek}

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmekstatic int udev_device_set_devnode_uid(struct udev_device *udev_device, uid_t uid)

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek{

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek char num[32];

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek udev_device->devnode_uid = uid;

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek snprintf(num, sizeof(num), "%u", uid);

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek udev_device_add_property_internal(udev_device, "DEVUID", num);

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek return 0;

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek}

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmekgid_t udev_device_get_devnode_gid(struct udev_device *udev_device)

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek{

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek if (!udev_device->info_loaded)

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek udev_device_read_uevent_file(udev_device);

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek return udev_device->devnode_gid;

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek}

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmekstatic int udev_device_set_devnode_gid(struct udev_device *udev_device, gid_t gid)

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek{

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek char num[32];

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek udev_device->devnode_gid = gid;

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek snprintf(num, sizeof(num), "%u", gid);

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek udev_device_add_property_internal(udev_device, "DEVGID", num);

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek return 0;

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek}

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmekstatic struct udev_list_entry *udev_device_add_property_internal(struct udev_device *udev_device, const char *key, const char *value)

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek{

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek udev_device->envp_uptodate = false;

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek if (value == NULL) {

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek struct udev_list_entry *list_entry;

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek list_entry = udev_device_get_properties_list_entry(udev_device);

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek list_entry = udev_list_entry_get_by_name(list_entry, key);

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek if (list_entry != NULL)

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek udev_list_entry_delete(list_entry);

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek return NULL;

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek }

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek return udev_list_entry_add(&udev_device->properties_list, key, value);

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek}

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmekint udev_device_add_property(struct udev_device *udev_device, const char *key, const char *value)

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek{

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek struct udev_list_entry *property;

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek property = udev_device_add_property_internal(udev_device, key, value);

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek /* store in db, skip private keys */

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek if (key[0] != '.')

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek udev_list_entry_set_num(property, true);

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek return 0;

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek}

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmekstatic struct udev_list_entry *udev_device_add_property_from_string(struct udev_device *udev_device, const char *property)

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek{

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek char name[UTIL_LINE_SIZE];

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek char *val;

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek strscpy(name, sizeof(name), property);

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek val = strchr(name, '=');

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek if (val == NULL)

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek return NULL;

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek val[0] = '\0';

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek val = &val[1];

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek if (val[0] == '\0')

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek val = NULL;

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek return udev_device_add_property_internal(udev_device, name, val);

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek}

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmekstatic int udev_device_set_syspath(struct udev_device *udev_device, const char *syspath)

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek{

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek const char *pos;

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek size_t len;

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek free(udev_device->syspath);

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek udev_device->syspath = strdup(syspath);

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek if (udev_device->syspath == NULL)

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek return -ENOMEM;

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek udev_device->devpath = udev_device->syspath + strlen("/sys");

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek udev_device_add_property_internal(udev_device, "DEVPATH", udev_device->devpath);

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek pos = strrchr(udev_device->syspath, '/');

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek if (pos == NULL)

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek return -EINVAL;

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek udev_device->sysname = strdup(&pos[1]);

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek if (udev_device->sysname == NULL)

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek return -ENOMEM;

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek /* some devices have '!' in their name, change that to '/' */

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek len = 0;

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek while (udev_device->sysname[len] != '\0') {

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek if (udev_device->sysname[len] == '!')

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek udev_device->sysname[len] = '/';

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek len++;

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek }

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek /* trailing number */

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek while (len > 0 && isdigit(udev_device->sysname[--len]))

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek udev_device->sysnum = &udev_device->sysname[len];

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek /* sysname is completely numeric */

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek if (len == 0)

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek udev_device->sysnum = NULL;

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek return 0;

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek}

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmekstatic void udev_device_set_usec_initialized(struct udev_device *udev_device, usec_t usec_initialized)

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek{

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek char num[DECIMAL_STR_MAX(usec_t)];

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek udev_device->usec_initialized = usec_initialized;

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek snprintf(num, sizeof(num), USEC_FMT, usec_initialized);

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek udev_device_add_property_internal(udev_device, "USEC_INITIALIZED", num);

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek}

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmekvoid udev_device_ensure_usec_initialized(struct udev_device *udev_device, struct udev_device *old_device)

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek{

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek if (old_device && old_device->usec_initialized != 0)

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek udev_device_set_usec_initialized(udev_device, old_device->usec_initialized);

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek else

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek udev_device_set_usec_initialized(udev_device, now(CLOCK_MONOTONIC));

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek}

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmekstatic void udev_device_add_property_from_string_parse(struct udev_device *udev_device, const char *property)

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek{

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek if (startswith(property, "DEVPATH=")) {

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek char path[UTIL_PATH_SIZE];

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek strscpyl(path, sizeof(path), "/sys", &property[8], NULL);

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek udev_device_set_syspath(udev_device, path);

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek } else if (startswith(property, "SUBSYSTEM=")) {

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek udev_device_set_subsystem(udev_device, &property[10]);

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek } else if (startswith(property, "DEVTYPE=")) {

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek udev_device_set_devtype(udev_device, &property[8]);

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek } else if (startswith(property, "DEVNAME=")) {

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek udev_device_set_devnode(udev_device, &property[8]);

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek } else if (startswith(property, "DEVLINKS=")) {

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek char devlinks[UTIL_PATH_SIZE];

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek char *slink;

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek char *next;

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek strscpy(devlinks, sizeof(devlinks), &property[9]);

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek slink = devlinks;

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek next = strchr(slink, ' ');

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek while (next != NULL) {

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek next[0] = '\0';

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek udev_device_add_devlink(udev_device, slink);

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek slink = &next[1];

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek next = strchr(slink, ' ');

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek }

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek if (slink[0] != '\0')

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek udev_device_add_devlink(udev_device, slink);

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek } else if (startswith(property, "TAGS=")) {

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek char tags[UTIL_PATH_SIZE];

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek char *next;

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek strscpy(tags, sizeof(tags), &property[5]);

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek next = strchr(tags, ':');

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek if (next != NULL) {

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek next++;

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek while (next[0] != '\0') {

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek char *tag;

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek

2b3ab29de466ae6bd7c3243a5a48c7291cc2af0aZbigniew Jędrzejewski-Szmek tag = next;

next = strchr(tag, ':');

if (next == NULL)

break;

next[0] = '\0';

next++;

udev_device_add_tag(udev_device, tag);

}

}

} else if (startswith(property, "USEC_INITIALIZED=")) {

udev_device_set_usec_initialized(udev_device, strtoull(&property[19], NULL, 10));

} else if (startswith(property, "DRIVER=")) {

udev_device_set_driver(udev_device, &property[7]);

} else if (startswith(property, "ACTION=")) {

udev_device_set_action(udev_device, &property[7]);

} else if (startswith(property, "MAJOR=")) {

udev_device->maj = strtoull(&property[6], NULL, 10);

} else if (startswith(property, "MINOR=")) {

udev_device->min = strtoull(&property[6], NULL, 10);

} else if (startswith(property, "DEVPATH_OLD=")) {

udev_device_set_devpath_old(udev_device, &property[12]);

} else if (startswith(property, "SEQNUM=")) {

udev_device_set_seqnum(udev_device, strtoull(&property[7], NULL, 10));

} else if (startswith(property, "IFINDEX=")) {

udev_device_set_ifindex(udev_device, strtoull(&property[8], NULL, 10));

} else if (startswith(property, "DEVMODE=")) {

udev_device_set_devnode_mode(udev_device, strtoul(&property[8], NULL, 8));

} else if (startswith(property, "DEVUID=")) {

udev_device_set_devnode_uid(udev_device, strtoul(&property[7], NULL, 10));

} else if (startswith(property, "DEVGID=")) {

udev_device_set_devnode_gid(udev_device, strtoul(&property[7], NULL, 10));

} else {

udev_device_add_property_from_string(udev_device, property);

}

}

static int udev_device_add_property_from_string_parse_finish(struct udev_device *udev_device)

{

if (udev_device->maj > 0)

udev_device_set_devnum(udev_device, makedev(udev_device->maj, udev_device->min));

udev_device->maj = 0;

udev_device->min = 0;

if (udev_device->devpath == NULL || udev_device->subsystem == NULL)

return -EINVAL;

return 0;

}

_public_ const char *udev_device_get_property_value(struct udev_device *udev_device, const char *key)

{

struct udev_list_entry *list_entry;

if (udev_device == NULL)

return NULL;

if (key == NULL)

return NULL;

list_entry = udev_device_get_properties_list_entry(udev_device);

list_entry = udev_list_entry_get_by_name(list_entry, key);

return udev_list_entry_get_value(list_entry);

}

int udev_device_read_db(struct udev_device *udev_device)

{

char filename[UTIL_PATH_SIZE];

char line[UTIL_LINE_SIZE];

const char *id;

FILE *f;

if (udev_device->db_loaded)

return 0;

udev_device->db_loaded = true;

id = udev_device_get_id_filename(udev_device);

if (id == NULL)

return -1;

strscpyl(filename, sizeof(filename), "/run/udev/data/", id, NULL);

f = fopen(filename, "re");

if (f == NULL)

return log_debug_errno(errno, "no db file to read %s: %m", filename);

/* devices with a database entry are initialized */

udev_device->is_initialized = true;

while (fgets(line, sizeof(line), f)) {

ssize_t len;

const char *val;

struct udev_list_entry *entry;

len = strlen(line);

if (len < 4)

break;

line[len-1] = '\0';

val = &line[2];

switch(line[0]) {

case 'S':

strscpyl(filename, sizeof(filename), "/dev/", val, NULL);

udev_device_add_devlink(udev_device, filename);

break;

case 'L':

udev_device_set_devlink_priority(udev_device, atoi(val));

break;

case 'E':

entry = udev_device_add_property_from_string(udev_device, val);

udev_list_entry_set_num(entry, true);

break;

case 'G':

udev_device_add_tag(udev_device, val);

break;

case 'W':

udev_device_set_watch_handle(udev_device, atoi(val));

break;

case 'I':

udev_device_set_usec_initialized(udev_device, strtoull(val, NULL, 10));

break;

}

}

fclose(f);

log_debug("device %p filled with db file data", udev_device);

return 0;

}

int udev_device_read_uevent_file(struct udev_device *udev_device)

{

char filename[UTIL_PATH_SIZE];

FILE *f;

char line[UTIL_LINE_SIZE];

int maj = 0;

int min = 0;

if (udev_device->uevent_loaded)

return 0;

strscpyl(filename, sizeof(filename), udev_device->syspath, "/uevent", NULL);

f = fopen(filename, "re");

if (f == NULL)

return -errno;

udev_device->uevent_loaded = true;

while (fgets(line, sizeof(line), f)) {

char *pos;

pos = strchr(line, '\n');

if (pos == NULL)

continue;

pos[0] = '\0';

if (startswith(line, "DEVTYPE=")) {

udev_device_set_devtype(udev_device, &line[8]);

continue;

}

if (startswith(line, "IFINDEX=")) {

udev_device_set_ifindex(udev_device, strtoull(&line[8], NULL, 10));

continue;

}

if (startswith(line, "DEVNAME=")) {

udev_device_set_devnode(udev_device, &line[8]);

continue;

}

if (startswith(line, "MAJOR="))

maj = strtoull(&line[6], NULL, 10);

else if (startswith(line, "MINOR="))

min = strtoull(&line[6], NULL, 10);

else if (startswith(line, "DEVMODE="))

udev_device->devnode_mode = strtoul(&line[8], NULL, 8);

udev_device_add_property_from_string(udev_device, line);

}

udev_device->devnum = makedev(maj, min);

fclose(f);

return 0;

}

void udev_device_set_info_loaded(struct udev_device *device)

{

device->info_loaded = true;

}

static struct udev_device *udev_device_new(struct udev *udev)

{

struct udev_device *udev_device;

if (udev == NULL) {

errno = EINVAL;

return NULL;

}

udev_device = new0(struct udev_device, 1);

if (udev_device == NULL) {

errno = ENOMEM;

return NULL;

}

udev_device->refcount = 1;

udev_device->udev = udev;

udev_list_init(udev, &udev_device->devlinks_list, true);

udev_list_init(udev, &udev_device->properties_list, true);

udev_list_init(udev, &udev_device->sysattr_value_list, true);

udev_list_init(udev, &udev_device->sysattr_list, false);

udev_list_init(udev, &udev_device->tags_list, true);

udev_device->watch_handle = -1;

return udev_device;

}

_public_ struct udev_device *udev_device_new_from_syspath(struct udev *udev, const char *syspath)

{

const char *subdir;

char path[UTIL_PATH_SIZE];

char *pos;

struct stat statbuf;

struct udev_device *udev_device;

if (udev == NULL) {

errno = EINVAL;

return NULL;

}

if (syspath == NULL) {

errno = EINVAL;

return NULL;

}

/* path starts in sys */

if (!startswith(syspath, "/sys")) {

log_debug("not in sys :%s", syspath);

errno = EINVAL;

return NULL;

}

/* path is not a root directory */

subdir = syspath + strlen("/sys");

pos = strrchr(subdir, '/');

if (pos == NULL || pos[1] == '\0' || pos < &subdir[2]) {

errno = EINVAL;

return NULL;

}

/* resolve possible symlink to real path */

strscpy(path, sizeof(path), syspath);

util_resolve_sys_link(udev, path, sizeof(path));

if (startswith(path + strlen("/sys"), "/devices/")) {

char file[UTIL_PATH_SIZE];

/* all "devices" require a "uevent" file */

strscpyl(file, sizeof(file), path, "/uevent", NULL);

if (stat(file, &statbuf) != 0)

return NULL;

} else {

/* everything else just needs to be a directory */

if (stat(path, &statbuf) != 0)

return NULL;

if (!S_ISDIR(statbuf.st_mode)) {

errno = EISDIR;

return NULL;

}

}

udev_device = udev_device_new(udev);

if (udev_device == NULL)

return NULL;

udev_device_set_syspath(udev_device, path);

log_debug("device %p has devpath '%s'", udev_device, udev_device_get_devpath(udev_device));

return udev_device;

}

_public_ struct udev_device *udev_device_new_from_devnum(struct udev *udev, char type, dev_t devnum)

{

char path[UTIL_PATH_SIZE];

const char *type_str;

if (type == 'b')

type_str = "block";

else if (type == 'c')

type_str = "char";

else {

errno = EINVAL;

return NULL;

}

/* use /sys/dev/{block,char}/<maj>:<min> link */

snprintf(path, sizeof(path), "/sys/dev/%s/%u:%u",

type_str, major(devnum), minor(devnum));

return udev_device_new_from_syspath(udev, path);

}

_public_ struct udev_device *udev_device_new_from_device_id(struct udev *udev, const char *id)

{

char type;

int maj, min;

char subsys[UTIL_PATH_SIZE];

char *sysname;

switch(id[0]) {

case 'b':

case 'c':

if (sscanf(id, "%c%i:%i", &type, &maj, &min) != 3)

return NULL;

return udev_device_new_from_devnum(udev, type, makedev(maj, min));

case 'n': {

int sk;

struct ifreq ifr;

struct udev_device *dev;

int ifindex;

ifindex = strtoul(&id[1], NULL, 10);

if (ifindex <= 0) {

errno = EINVAL;

return NULL;

}

sk = socket(PF_INET, SOCK_DGRAM, 0);

if (sk < 0)

return NULL;

memzero(&ifr, sizeof(struct ifreq));

ifr.ifr_ifindex = ifindex;

if (ioctl(sk, SIOCGIFNAME, &ifr) != 0) {

close(sk);

return NULL;

}

close(sk);

dev = udev_device_new_from_subsystem_sysname(udev, "net", ifr.ifr_name);

if (dev == NULL)

return NULL;

if (udev_device_get_ifindex(dev) == ifindex)

return dev;

/* this is racy, so we may end up with the wrong device */

udev_device_unref(dev);

errno = ENODEV;

return NULL;

}

case '+':

strscpy(subsys, sizeof(subsys), &id[1]);

sysname = strchr(subsys, ':');

if (sysname == NULL) {

errno = EINVAL;

return NULL;

}

sysname[0] = '\0';

sysname = &sysname[1];

return udev_device_new_from_subsystem_sysname(udev, subsys, sysname);

default:

errno = EINVAL;

return NULL;

}

}

_public_ struct udev_device *udev_device_new_from_subsystem_sysname(struct udev *udev, const char *subsystem, const char *sysname)

{

char path[UTIL_PATH_SIZE];

struct stat statbuf;

if (streq(subsystem, "subsystem")) {

strscpyl(path, sizeof(path), "/sys/subsystem/", sysname, NULL);

if (stat(path, &statbuf) == 0)

goto found;

strscpyl(path, sizeof(path), "/sys/bus/", sysname, NULL);

if (stat(path, &statbuf) == 0)

goto found;

strscpyl(path, sizeof(path), "/sys/class/", sysname, NULL);

if (stat(path, &statbuf) == 0)

goto found;

goto out;

}

if (streq(subsystem, "module")) {

strscpyl(path, sizeof(path), "/sys/module/", sysname, NULL);

if (stat(path, &statbuf) == 0)

goto found;

goto out;

}

if (streq(subsystem, "drivers")) {

char subsys[UTIL_NAME_SIZE];

char *driver;

strscpy(subsys, sizeof(subsys), sysname);

driver = strchr(subsys, ':');

if (driver != NULL) {

driver[0] = '\0';

driver = &driver[1];

strscpyl(path, sizeof(path), "/sys/subsystem/", subsys, "/drivers/", driver, NULL);

if (stat(path, &statbuf) == 0)

goto found;

strscpyl(path, sizeof(path), "/sys/bus/", subsys, "/drivers/", driver, NULL);

if (stat(path, &statbuf) == 0)

goto found;

} else

errno = EINVAL;

goto out;

}

strscpyl(path, sizeof(path), "/sys/subsystem/", subsystem, "/devices/", sysname, NULL);

if (stat(path, &statbuf) == 0)

goto found;

strscpyl(path, sizeof(path), "/sys/bus/", subsystem, "/devices/", sysname, NULL);

if (stat(path, &statbuf) == 0)

goto found;

strscpyl(path, sizeof(path), "/sys/class/", subsystem, "/", sysname, NULL);

if (stat(path, &statbuf) == 0)

goto found;

out:

return NULL;

found:

return udev_device_new_from_syspath(udev, path);

}

_public_ struct udev_device *udev_device_new_from_environment(struct udev *udev)

{

int i;

struct udev_device *udev_device;

udev_device = udev_device_new(udev);

if (udev_device == NULL)

return NULL;

udev_device_set_info_loaded(udev_device);

for (i = 0; environ[i] != NULL; i++)

udev_device_add_property_from_string_parse(udev_device, environ[i]);

if (udev_device_add_property_from_string_parse_finish(udev_device) < 0) {

log_debug("missing values, invalid device");

udev_device_unref(udev_device);

udev_device = NULL;

}

return udev_device;

}

static struct udev_device *device_new_from_parent(struct udev_device *udev_device)

{

struct udev_device *udev_device_parent = NULL;

char path[UTIL_PATH_SIZE];

const char *subdir;

strscpy(path, sizeof(path), udev_device->syspath);

subdir = path + strlen("/sys/");

for (;;) {

char *pos;

pos = strrchr(subdir, '/');

if (pos == NULL || pos < &subdir[2])

break;

pos[0] = '\0';

udev_device_parent = udev_device_new_from_syspath(udev_device->udev, path);

if (udev_device_parent != NULL)

return udev_device_parent;

}

errno = ENOENT;

return NULL;

}

_public_ struct udev_device *udev_device_get_parent(struct udev_device *udev_device)

{

if (udev_device == NULL) {

errno = EINVAL;

return NULL;

}

if (!udev_device->parent_set) {

udev_device->parent_set = true;

udev_device->parent_device = device_new_from_parent(udev_device);

}

return udev_device->parent_device;

}

_public_ struct udev_device *udev_device_get_parent_with_subsystem_devtype(struct udev_device *udev_device, const char *subsystem, const char *devtype)

{

struct udev_device *parent;

if (subsystem == NULL) {

errno = EINVAL;

return NULL;

}

parent = udev_device_get_parent(udev_device);

while (parent != NULL) {

const char *parent_subsystem;

const char *parent_devtype;

parent_subsystem = udev_device_get_subsystem(parent);

if (parent_subsystem != NULL && streq(parent_subsystem, subsystem)) {

if (devtype == NULL)

break;

parent_devtype = udev_device_get_devtype(parent);

if (parent_devtype != NULL && streq(parent_devtype, devtype))

break;

}

parent = udev_device_get_parent(parent);

}

if (!parent)

errno = ENOENT;

return parent;

}

_public_ struct udev *udev_device_get_udev(struct udev_device *udev_device)

{

if (udev_device == NULL)

return NULL;

return udev_device->udev;

}

_public_ struct udev_device *udev_device_ref(struct udev_device *udev_device)

{

if (udev_device == NULL)

return NULL;

udev_device->refcount++;

return udev_device;

}

_public_ struct udev_device *udev_device_unref(struct udev_device *udev_device)

{

if (udev_device == NULL)

return NULL;

udev_device->refcount--;

if (udev_device->refcount > 0)

return NULL;

if (udev_device->parent_device != NULL)

udev_device_unref(udev_device->parent_device);

free(udev_device->syspath);

free(udev_device->sysname);

free(udev_device->devnode);

free(udev_device->subsystem);

free(udev_device->devtype);

udev_list_cleanup(&udev_device->devlinks_list);

udev_list_cleanup(&udev_device->properties_list);

udev_list_cleanup(&udev_device->sysattr_value_list);

udev_list_cleanup(&udev_device->sysattr_list);

udev_list_cleanup(&udev_device->tags_list);

free(udev_device->action);

free(udev_device->driver);

free(udev_device->devpath_old);

free(udev_device->id_filename);

free(udev_device->envp);

free(udev_device->monitor_buf);

free(udev_device);

return NULL;

}

_public_ const char *udev_device_get_devpath(struct udev_device *udev_device)

{

if (udev_device == NULL)

return NULL;

return udev_device->devpath;

}

_public_ const char *udev_device_get_syspath(struct udev_device *udev_device)

{

if (udev_device == NULL)

return NULL;

return udev_device->syspath;

}

_public_ const char *udev_device_get_sysname(struct udev_device *udev_device)

{

if (udev_device == NULL)

return NULL;

return udev_device->sysname;

}

_public_ const char *udev_device_get_sysnum(struct udev_device *udev_device)

{

if (udev_device == NULL)

return NULL;

return udev_device->sysnum;