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mdev: do not complain if mdev.conf does not exist;

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use #if to prevent gcc from generating dead code
 (sadly, it's more ugly this way)
This commit is contained in:
Denis Vlasenko
2008-07-26 18:35:10 +00:00
parent 48a9971bd4
commit df96df9c7c
3 changed files with 155 additions and 134 deletions
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17
docs/mdev.txt
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@@ -60,18 +60,23 @@ matched, then the default of 0:0 660 is used. To set your own default, simply
create your own total match like so:
.* 1:1 777
You can rename/relocate device nodes by using the next optional field.
<device regex> <uid>:<gid> <octal permissions> [>path]
You can rename/move device nodes by using the next optional field.
<device regex> <uid>:<gid> <octal permissions> [=path]
So if you want to place the device node into a subdirectory, make sure the path
has a trailing /. If you want to rename the device node, just place the name.
hda 0:3 660 >drives/
This will relocate "hda" into the drives/ subdirectory.
hdb 0:3 660 >cdrom
hda 0:3 660 =drives/
This will move "hda" into the drives/ subdirectory.
hdb 0:3 660 =cdrom
This will rename "hdb" to "cdrom".
Similarly, ">path" renames/moves the device but it also creates
a direct symlink /dev/DEVNAME to the renamed/moved device.
If you also enable support for executing your own commands, then the file has
the format:
<device regex> <uid>:<gid> <octal permissions> [<@|$|*> <command>]
<device regex> <uid>:<gid> <octal permissions> [=path] [@|$|*<command>]
or
<device regex> <uid>:<gid> <octal permissions> [>path] [@|$|*<command>]
The special characters have the meaning:
@ Run after creating the device.
$ Run before removing the device.