- --- a/src/libudev.c
- +++ b/src/libudev.c
- @@ -35,6 +35,7 @@ struct udev_device {
- struct udev *udev;
- int refcount;
- char syspath[32];
- + char sysfspath[64];
- dev_t devnum;
- char const *sysname;
- char const *action;
- @@ -124,6 +125,29 @@ udev_device_new_from_devnum(struct udev
- return NULL;
- }
-
- +struct udev_device *
- +udev_device_new_from_subsystem_sysname(
- + struct udev *udev, const char *subsystem, const char *sysname)
- +{
- + struct udev_device *u;
- + char sysfsname[64];
- + struct stat st;
- +
- + snprintf(sysfsname, sizeof(sysfsname), "/sys/bus/%s/devices/%s/", subsystem, sysname);
- + if (stat(sysfsname, &st) == 0)
- + {
- + char sysfsdev[64];
- + u = calloc(1, sizeof(struct udev_device));
- + strncpy(u->sysfspath, sysfsname, sizeof(u->sysfspath));
- +
- + return u;
- + }
- + else
- + {
- + return NULL;
- + }
- +}
- +
- char const *
- udev_device_get_devnode(struct udev_device *udev_device)
- {
- @@ -141,6 +165,20 @@ udev_device_get_devnum(struct udev_devic
- char const *
- udev_device_get_driver(struct udev_device *udev_device)
- {
- + if (udev_device->sysfspath)
- + {
- + char driverlnp[64];
- + char driverlnk[32];
- + snprintf(driverlnp, sizeof(driverlnp), "%s/driver",
- + udev_device->sysfspath);
- + if (readlink(driverlnp, driverlnk, sizeof(driver)))
- + {
- + char *drivernm;
- + drivernm = strrchr(driverlnk, '/');
- + if (drivernm)
- + return ++drivernm;
- + }
- + }
- return NULL;
- }
-
- --- a/src/libudev.h
- +++ b/src/libudev.h
- @@ -31,6 +31,8 @@ struct udev_device *udev_device_new_from
- struct udev *udev, char const *syspath);
- struct udev_device *udev_device_new_from_devnum(
- struct udev *udev, char type, dev_t devnum);
- +struct udev_device *udev_device_new_from_subsystem_sysname(
- + struct udev *udev, const char *subsystem, const char *sysname);
- char const *udev_device_get_driver(struct udev_device *udev_device);
- char const *udev_device_get_syspath(struct udev_device *udev_device);
- char const *udev_device_get_sysname(struct udev_device *udev_device);
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