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mdev: add "!" syntax support

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Based on the patch by Steve Bennett <steveb@workware.net.au>

function                                             old     new   delta
make_device                                         1640    1673     +33

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
This commit is contained in:
Denys Vlasenko
2010-04-02 06:47:14 +02:00
parent 5342c3f310
commit b38af7bd31
2 changed files with 42 additions and 23 deletions
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16
docs/mdev.txt
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@ -51,8 +51,8 @@ device nodes if your system needs something more than the default root/root
660 permissions.
The file has the format:
<device regex> <uid>:<gid> <octal permissions>
or @<maj[,min1[-min2]]> <uid>:<gid> <octal permissions>
<device regex> <uid>:<gid> <permissions>
or @<maj[,min1[-min2]]> <uid>:<gid> <permissions>
For example:
hd[a-z][0-9]* 0:3 660
@ -63,7 +63,7 @@ create your own total match like so:
.* 1:1 777
You can rename/move device nodes by using the next optional field.
<device regex> <uid>:<gid> <octal permissions> [=path]
<device regex> <uid>:<gid> <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/
@ -74,11 +74,17 @@ 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.
You can also prevent creation of device nodes with the 4th field as "!":
tty[a-z]. 0:0 660 !
pty[a-z]. 0:0 660 !
If you also enable support for executing your own commands, then the file has
the format:
<device regex> <uid>:<gid> <octal permissions> [=path] [@|$|*<command>]
<device regex> <uid>:<gid> <permissions> [=path] [@|$|*<command>]
or
<device regex> <uid>:<gid> <octal permissions> [>path] [@|$|*<command>]
<device regex> <uid>:<gid> <permissions> [>path] [@|$|*<command>]
or
<device regex> <uid>:<gid> <permissions> [!] [@|$|*<command>]
For example:
---8<---