Signed-off-by: Jeff Layton <jlayton@xxxxxxxxxx> --- utils/exportfs/exports.man | 13 ++++++++----- 1 files changed, 8 insertions(+), 5 deletions(-) diff --git a/utils/exportfs/exports.man b/utils/exportfs/exports.man index d9486e8..b202583 100644 --- a/utils/exportfs/exports.man +++ b/utils/exportfs/exports.man @@ -47,7 +47,9 @@ NFS clients may be specified in a number of ways: .IP "single host You may specify a host either by an abbreviated name recognized be the resolver, the fully qualified domain -name, an IPv4 address, or an IPv6 address. +name, an IPv4 address, or an IPv6 address. IPv6 addresses must not be +inside square brackets in /etc/exports lest they be confused with +character-class wildcard matches. .IP "IP networks You can also export directories to all hosts on an IP (sub-) network simultaneously. This is done by specifying an IP address and netmask pair @@ -57,11 +59,10 @@ where the netmask can be specified in dotted-decimal format, or as a contiguous mask length. For example, either `/255.255.252.0' or `/22' appended to the network base IPv4 address results in identical subnetworks with 10 bits -of host. IPv6 addresses must use a contiguous mask length. Wildcard characters -generally do not work on IP addresses, though they +of host. IPv6 addresses must use a contiguous mask length and must not be inside square brackets to avoid confusion with character-class wildcards. Wildcard characters generally do not work on IP addresses, though they may work by accident when reverse DNS lookups fail. .IP "wildcards -Machine names may contain the wildcard characters \fI*\fR and \fI?\fR. +Machine names may contain the wildcard characters \fI*\fR and \fI?\fR, or may contain character class lists within [square brackets]. This can be used to make the \fIexports\fR file more compact; for instance, \fI*.cs.foo.edu\fR matches all hosts in the domain \fIcs.foo.edu\fR. As these characters also match the dots in a domain @@ -488,6 +489,7 @@ The format for extra export tables is the same as /pub *(ro,insecure,all_squash) /srv/www \-sync,rw server @trusted @external(ro) /foo 2001:db8:9:e54::/64(rw) 192.0.2.0/24(rw) +/build buildhost[0-9].local.domain(rw) '''/pub/private (noaccess) .fi .PP @@ -504,7 +506,8 @@ don't use a reserved port for NFS. The sixth line exports a directory read-write to the machine 'server' as well as the `@trusted' netgroup, and read-only to netgroup `@external', all three mounts with the `sync' option enabled. The seventh line exports -a directory to both an IPv6 and an IPv4 subnet. +a directory to both an IPv6 and an IPv4 subnet. The eighth line demonstrates +a character class wildcard match. ''' The last line denies all NFS clients '''access to the private directory. '''.SH CAVEATS -- 1.7.5.4 -- To unsubscribe from this list: send the line "unsubscribe linux-nfs" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
