kern/135874: Geom_linux_lvm misses newer fedora defaults

>Number:         135874
>Category:       kern
>Synopsis:       Geom_linux_lvm misses newer fedora defaults
>Confidential:   no
>Severity:       non-critical
>Priority:       medium
>Responsible:    freebsd-bugs
>State:          open
>Quarter:        
>Keywords:       
>Date-Required:
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Sun Jun 21 03:00:17 UTC 2009
>Closed-Date:
>Last-Modified:
>Originator:     Pete Carah
>Release:        FreeBSD 7.2-STABLE amd64
>Organization:
Altadena Internet
>Environment:
System: FreeBSD port4.altadena.net 7.2-STABLE FreeBSD 7.2-STABLE #2 r194560M: Sat Jun 20 21:50:58 EDT 2009 [e-mail]:/usr/obj/usr/src/sys/PORT47 amd64


>Description:
Geom doesn't derive the correct name for default logical volumes
in the default fedora 11 layout, which are named lv_root and lv_swap.  The
problem is that isalpha doesn't include underscore.
>How-To-Repeat:
	Try to mount a linux lvm whose name contains an underscore.
>Fix:
--- g_linux_lvm.c       (revision 194560)
+++ g_linux_lvm.c       (working copy)
@@ -828,7 +828,8 @@

 #define        GRAB_NAME(tok, name, len)                                      \
        len = 0;                                                        \
-       while (tok[len] && (isalpha(tok[len]) || isdigit(tok[len])) &&  \
+       while (tok[len] && (isalpha(tok[len]) || isdigit(tok[len]) ||   \
+       tok[len] == '_' ) &&                                            \
            len < G_LLVM_NAMELEN - 1)                                   \
                len++;                                                  \
        bcopy(tok, name, len);                                          \


>Release-Note:
>Audit-Trail:
>Unformatted:
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