On Mon, Apr 25, 2005 at 02:10:14AM +0800, [EMAIL PROTECTED] wrote:
> On Sun, 24 Apr 2005, Daniel Andre Vaquero wrote:
>
> >I would also suggest a change in the name of this function to something
> >like is_replicated_entry. Multi-mounts and replicated mounts are
> >different things, and in this case it could confuse the reader.
>
> Perhaps. But they are handled by the same code.
> The simple replicated mount entry is a special case of a multi-mount
> entry as far as the code is concerned. At least that's the way it is now.
Sorry, I didn't see that it is now also being used in parse_sun.c. Then
I agree that it is OK.
I have tested version 4.1.4 plus the three new patches from kernel.org,
and found a bug when using bogus names in multi-mounts. The test case is:
/etc/auto.testing
foo -ro,hard,intr \
/dir/bar bogus:/usr/src \
/dir/baz morebogus:/usr/share/doc
When the function get_best_mount tries to resolve the bogus names, there is a
host lookup failure. Then it returns the winner as local, and automount does
a mount --bind. But the correct behaviour would be a mount failure.
The corresponding log entries follows attached. I have also made and tested
a little patch to fix it (and a brace missing in
autofs-4.1.4-multi-parse-fix.patch), that is attached as well.
Daniel
Apr 24 20:01:51 mybox automount[18557]: attempting to mount entry /testing/foo
Apr 24 20:01:51 mybox automount[19519]: lookup(file): foo -> -ro,hard,intr
/dir/bar bogus:/usr/src /dir/baz
morebogus:/usr/share/doc
Apr 24 20:01:51 mybox automount[19519]: parse(sun): expanded entry:
-ro,hard,intr /dir/bar bogus:/usr/src /dir/baz
morebogus:/usr/share/doc
Apr 24 20:01:51 mybox automount[19519]: parse(sun): dequote("ro,hard,intr") ->
ro,hard,intr
Apr 24 20:01:51 mybox automount[19519]: parse(sun): gathered options:
ro,hard,intr
Apr 24 20:01:51 mybox automount[19519]: parse(sun): dequote("/dir/bar") ->
/dir/bar
Apr 24 20:01:51 mybox automount[19519]: parse(sun): dequote("bogus:/usr/src")
-> bogus:/usr/src
Apr 24 20:01:51 mybox automount[19519]: parse(sun): dequote("/dir/baz") ->
/dir/baz
Apr 24 20:01:51 mybox automount[19519]: parse(sun):
dequote("morebogus:/usr/share/doc") -> morebogus:/usr/share/doc
Apr 24 20:01:51 mybox automount[19519]: parse(sun): multimount:
morebogus:/usr/share/doc on /dir/baz with options ro,hard,intr
Apr 24 20:01:51 mybox automount[19519]: parse(sun): mounting root /testing/foo,
mountpoint dir/baz, what morebogus:/usr/share/doc, fstype nfs, options
ro,hard,intr
Apr 24 20:01:51 mybox automount[19519]: mount(nfs): root=/testing/foo
name=dir/baz what=morebogus:/usr/share/doc, fstype=nfs, options=ro,hard,intr
Apr 24 20:01:51 mybox automount[19519]: mount(nfs): nfs options="ro,hard,intr",
nosymlink=0, ro=1
Apr 24 20:01:51 mybox automount[19519]: mount(nfs): is_local_mount:
morebogus:/usr/share/doc
Apr 24 20:01:51 mybox automount[19519]: mount(nfs): host morebogus: lookup
failure
Apr 24 20:01:51 mybox automount[19519]: mount(nfs): host
morebogus:/usr/share/doc: is localhost
Apr 24 20:01:51 mybox automount[19519]: mount(nfs): from
morebogus:/usr/share/doc elected /usr/share/doc
Apr 24 20:01:51 mybox automount[19519]: mount(nfs): dir/baz is local, doing bind
Apr 24 20:01:51 mybox automount[19519]: mount(bind): calling mkdir_path
/testing/foo/dir/baz
Apr 24 20:01:51 mybox automount[19519]: mount(bind): calling mount --bind -s
-o ro /usr/share/doc /testing/foo/dir/baz
Apr 24 20:01:51 mybox automount[19519]: mount(bind): mounted /usr/share/doc
type bind on /testing/foo/dir/baz
Apr 24 20:01:51 mybox automount[19519]: parse(sun): multimount: bogus:/usr/src
on /dir/bar with options ro,hard,intr
Apr 24 20:01:51 mybox automount[19519]: parse(sun): mounting root /testing/foo,
mountpoint dir/bar, what bogus:/usr/src, fstype nfs, options ro,hard,intr
Apr 24 20:01:51 mybox automount[19519]: mount(nfs): root=/testing/foo
name=dir/bar what=bogus:/usr/src, fstype=nfs, options=ro,hard,intr
Apr 24 20:01:51 mybox automount[19519]: mount(nfs): nfs options="ro,hard,intr",
nosymlink=0, ro=1
Apr 24 20:01:51 mybox automount[19519]: mount(nfs): is_local_mount:
bogus:/usr/src
Apr 24 20:01:52 mybox automount[19519]: mount(nfs): host bogus: lookup failure
Apr 24 20:01:52 mybox automount[19519]: mount(nfs): host bogus:/usr/src: is
localhost
Apr 24 20:01:52 mybox automount[19519]: mount(nfs): from bogus:/usr/src elected
/usr/src
Apr 24 20:01:52 mybox automount[19519]: mount(nfs): dir/bar is local, doing bind
Apr 24 20:01:52 mybox automount[19519]: mount(bind): calling mkdir_path
/testing/foo/dir/bar
Apr 24 20:01:52 mybox automount[19519]: mount(bind): calling mount --bind -s
-o ro /usr/src /testing/foo/dir/bar
Apr 24 20:01:52 mybox automount[19519]: mount(bind): mounted /usr/src type bind
on /testing/foo/dir/bar
Apr 24 20:01:52 mybox automount[18557]: handle_child: got pid 19519, sig 0 (0),
stat 0
Apr 24 20:01:52 mybox automount[18557]: sig_child: found pending iop pid 19519:
signalled 0 (sig 0), exit status 0
Apr 24 20:01:52 mybox automount[18557]: send_ready: token=1402
diff -Npru autofs-4.1.4.orig/modules/mount_nfs.c
autofs-4.1.4/modules/mount_nfs.c
--- autofs-4.1.4.orig/modules/mount_nfs.c 2005-04-24 20:28:25.000000000
-0300
+++ autofs-4.1.4/modules/mount_nfs.c 2005-04-24 19:59:13.000000000 -0300
@@ -191,7 +191,7 @@ int get_best_mount(char *what, const cha
*pstrip = '\0';
/* Check if the host is the localhost */
- if (is_local_mount(p)) {
+ if (is_local_mount(p) > 0) {
debug(MODPREFIX "host %s: is localhost", p);
/* Strip off hostname and ':' */
diff -Npru autofs-4.1.4.orig/modules/parse_sun.c
autofs-4.1.4/modules/parse_sun.c
--- autofs-4.1.4.orig/modules/parse_sun.c 2005-04-24 20:28:25.000000000
-0300
+++ autofs-4.1.4/modules/parse_sun.c 2005-04-24 20:35:01.000000000 -0300
@@ -841,6 +841,7 @@ int parse_mount(const char *root, const
if (*p != '/') {
l = 0;
path = dequote("/", 1);
+ }
else
path = dequote(p, l = chunklen(p, 0));
if (!path) {
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