udev - userspace device management
-For more information see the files in the docs/ directory.
+Integrating udev in the system has complex dependencies and differs from distro
+to distro. All major distros depend on udev these days and the system may not
+work without a properly installed version. The upstream udev project does not
+recommend to replace a distro's udev installation with the upstream version.
-Important Note:
- Integrating udev in the system has complex dependencies and differs from distro
- to distro. All major distros depend on udev these days and the system may not
- work without a properly installed version. The upstream udev project does not
- recommend to replace a distro's udev installation with the upstream version.
+Tools and rules shipped by udev are not public API and may change at any time.
+Never call any private tool in /lib/udev from any external application, it might
+just go away in the next release. Access to udev information is only offered
+by udevadm and libudev. Tools and rules in /lib/udev and the entire content of
+/dev/.udev/ is private to udev.
Requirements:
- Version 2.6.25 of the Linux kernel with sysfs, procfs, signalfd, inotify,
CONFIG_SYSFS_DEPRECATED*=n
CONFIG_PROC_FS=y
CONFIG_TMPFS=y
- CONFIG_TMPFS_POSIX_ACL=y
CONFIG_INOTIFY=y
CONFIG_SIGNALFD=y
+ CONFIG_TMPFS_POSIX_ACL=y (user ACLs for device nodes)
+ CONFIG_BLK_DEV_BSG=y (SCSI tape devices)
- For reliable operation, the kernel must not use the CONFIG_SYSFS_DEPRECATED*
option.
these group names with only the rootfs mounted, and while no network is
available.
- - To build all udev extras, libacl, libglib2, libusb, usbutils, pciutils are
- needed. These dependencies can be disabled with the --disable-extras option.
+ - To build all udev extras, libacl, libglib2, libusb, usbutils, pciutils,
+ gperf are needed. These dependencies can be disabled with the
+ --disable-extras option.
Operation:
Udev creates and removes device nodes in /dev/, based on events the kernel
~ianmdlvl / elogind.git / blobdiff