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authorDenys Vlasenko2010-04-02 06:47:14 +0200
committerDenys Vlasenko2010-04-02 06:47:14 +0200
commitb38af7bd31d98dd6e849354ee94ebafe580e7cc1 (patch)
tree1bb84dbd4fdf6ba917b7a13ca436aba165856a2f /docs
parent5342c3f3106b4afa2a76d3173f4827c4b8236da8 (diff)
downloadbusybox-b38af7bd31d98dd6e849354ee94ebafe580e7cc1.zip
busybox-b38af7bd31d98dd6e849354ee94ebafe580e7cc1.tar.gz
mdev: add "!" syntax support
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>
Diffstat (limited to 'docs')
-rw-r--r--docs/mdev.txt16
1 files changed, 11 insertions, 5 deletions
diff --git a/docs/mdev.txt b/docs/mdev.txt
index 7bd00fe..2d03bd8 100644
--- a/docs/mdev.txt
+++ b/docs/mdev.txt
@@ -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> <permissions> [>path] [@|$|*<command>]
or
- <device regex> <uid>:<gid> <octal permissions> [>path] [@|$|*<command>]
+ <device regex> <uid>:<gid> <permissions> [!] [@|$|*<command>]
For example:
---8<---