watchdog: stop watchdog first on startup

[oweals/busybox.git] / docs / mdev.txt

diff --git a/docs/mdev.txt b/docs/mdev.txt
index 7bd00fe1bf0e9c07640e9c394a6cd7eb8e5dbd68..b24025f7b73587cab98d25c23ed5de906b7df0d6 100644 (file)
--- a/docs/mdev.txt
+++ b/docs/mdev.txt
@@ -51,19 +51,25 @@ 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>
+       [-][envmatch]<device regex>     <uid>:<gid> <permissions>
+or
+       [envmatch]@<maj[,min1[-min2]]>  <uid>:<gid> <permissions>
+or
+       $envvar=<regex>         <uid>:<gid> <permissions>
 
 For example:
-    hd[a-z][0-9]* 0:3 660
+       hd[a-z][0-9]* 0:3 660
 
 The config file parsing stops at the first matching line.  If no line is
 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/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 +80,17 @@ 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> <permissions> [>path] [@|$|*<command>]
     or
-       <device regex> <uid>:<gid> <octal permissions> [>path] [@|$|*<command>]
+       <device regex> <uid>:<gid> <permissions> [!] [@|$|*<command>]
 
 For example:
 ---8<---