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Commit Graph

19 Commits

Author SHA1 Message Date
Kay Sievers
6c29f2b942 simplify "symlink name stack"
With well defined and kernel-supplied node names, we no longer need
to support a possible stack of conflicting symlinks and node names.
Only symlinks with identical names can be claimed by multiple devices.

This shrinks the former /dev/.udev/names/ significantly.

Also the /dev/{block,char}/MAJ:MIN" links are excluded from the name
stack - they are unique and can not conflict.
2009-09-09 18:49:07 +02:00
Kay Sievers
2ffc9cc191 change database file names
With very deeply nested devices, We can not use a single file
name to carry an entire DEVPATH. Use <subsystem>:<sysname> as
the database filename, which should also simplify the handling
of devices moving around, as these values will not change but
still be unique.

For the name stack we use the <maj>:<min> now as the filename.

> On Tue, Aug 18, 2009 at 09:59:56AM -0400, Ric Wheeler wrote:
> The first is that udev grumbles during boot about "file name too long"
> like the following:
>
> Aug 17 06:49:58 megadeth udevd-event[20447]: unable to create db file
> '/dev/.udev/db/\x2fdevices\x2fpci0000:00\x2f0000:00:04.0\x2f0000:17:00.0\x2f0000:18:0a.0\x2f0000:1f:00.0\x2fhost11\x2fport-11:0\x2fexpander-11:0\x2fport-11:0:0\x2fexpander-11:1\x2fport-11:1:0\x2fexpander-11:2\x2fport-11:2:17\x2fexpander-11:3\x2fport-11:3:1\x2fend_device-11:3:1\x2fbsg\x2fend_device-11:3:1':
> File name too long
2009-08-19 20:49:49 +02:00
Kay Sievers
fc206fbe3e update a few years of copyright 2009-08-01 09:39:18 -04:00
Kay Sievers
065db05221 use more efficient string copying 2009-05-20 17:57:52 +02:00
Kay Sievers
cb14f4543a handle devtmpfs nodes
UDev follows the kernel given name, and re-uses the kernel created
device node. If the kernel and spcecified udev rules disagree, the
udev specified node node is created and the kernel-created on is
deleted.
2009-05-04 04:52:31 +02:00
Kay Sievers
37ed4f5619 drop "extern" keyword from non-static function 2009-04-26 13:59:39 +02:00
Kay Sievers
540f46698d udevd: at startup create /dev/null, /dev/console, /dev/kmsg 2009-04-19 03:25:04 +02:00
Kay Sievers
8257730d39 remove name from index if the node name has changed
Scott discovered that a changed rule, which renames a device node
leaves the old node name around as a symlink. So drop the reference
to the old name.
2009-01-16 21:14:13 +01:00
Kay Sievers
ec2dd02e2a udevadm: test - remove --force option
Since a while we change the database with a "test" run, but do not update
the node and symlinks. We need to "force" all the time, to keep things
in sync.
2009-01-15 20:20:16 +01:00
Kay Sievers
f408fd919a fix handling of swapping node name with symlink name 2008-11-24 02:21:12 +01:00
Kay Sievers
6e0cb78c9d fix cleanup of possible left-over symlinks 2008-11-05 04:45:23 +01:00
Kay Sievers
5755d586e1 fix udev_node_update_old_links() logic
No need to check if links that still belong to us, need to be updated.
2008-11-01 20:05:41 +01:00
Kay Sievers
1822e9b033 do not init string arrays, just clear first byte 2008-10-26 02:31:54 +01:00
Kay Sievers
6880b25d40 replace in-memory rules array with match/action token list
The in-memory rule array of a common desktop distro install took:
  1151088 bytes
with the token list:
  109232 bytes tokens (6827 * 16 bytes), 71302 bytes buffer
2008-10-23 00:13:59 +02:00
Kay Sievers
54808d77a3 prefix udev-util.c functions with util_* 2008-10-18 20:12:55 +02:00
Kay Sievers
eb8837e15c udev_list_cleanup() -> udev_list_cleanup_entries() 2008-10-18 19:27:38 +02:00
Kay Sievers
c7521974a3 merge udev-rules.c and udev-rules-parse.c 2008-10-18 14:33:37 +02:00
Kay Sievers
7db6580f42 udev-node: name_list -> udev_list 2008-10-16 19:23:07 +02:00
Kay Sievers
8460299b57 rename udev source files 2008-10-16 18:13:48 +02:00