Autofs problem while using new nfs-utils package

["Michael Rayment" <mike@cs.mun.ca>]

I just emerged the latest gentoo release of the nfs-utils package, 
nfs-utils-1.1.0-r1.ebuild.  I found that the autofs code did not work for my 
diskless computers that have a readonly /etc directory with a /etc/mtab 
symbolically linked to /proc/mounts.  This was because the creation of the 
mtab lock file /etc/mtab~nnnn failed.  I noticed that in the update_mtab() 
function, a check was put in to acertain whether this situation existed and 
silently carried on whereas the add_mtab() function did not perform the check 
and consequently failed.  My simple minded fix was to add the the same check 
to add_mtab() as can be seen in the context diff below.  Automounting worked 
fine after the fix was applied.   Hopefully some fix will make its way into 
the authoratative release so that I do not have to patch my code locally.

Thanks,

Michael Rayment


*** utils/mount/mount.c.sav     Sat Oct  6 01:52:21 2007
--- utils/mount/mount.c Sat Oct  6 01:55:25 2007
***************
*** 181,188 ****
--- 181,191 ----
                update_mtab(ment.mnt_dir, &ment);
                return 0;
        }

+       if (mtab_does_not_exist() || !mtab_is_writable())
+               return 0;
+
        lock_mtab();

          if ((mtab = setmntent(MOUNTED, "a+")) == NULL) {
                fprintf(stderr, "Can't open " MOUNTED);

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