83 lines
2.1 KiB
Bash
Executable File
83 lines
2.1 KiB
Bash
Executable File
#!/bin/sh
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. /lib/dracut-lib
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PATH=$PATH:/sbin:/usr/sbin
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# XXX needs error handling like ifup/dhclient-script
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getarg rdnetdebug && {
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exec > /tmp/nfsroot.$1.$$.out
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exec 2>> /tmp/nfsroot.$1.$$.out
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set -x
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}
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# root is in the form root=nfs[4]:server:path:[options]
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netif="$1"
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root="$2"
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nfsver=${root%%:*}; root=${root#*:}
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nfsserver=${root%%:*}; root=${root#*:}
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nfspath=${root%%:*}
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flags=${root#*:}
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# look through the flags and see if any are overridden by the command line
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# Append a , so we know we terminate
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flags=${flags},
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while [ -n "$flags" ]; do
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f=${flags%%,*}
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flags=${flags#*,}
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if [ -z "$f" ]; then
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break
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fi
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if [ "$f" = "ro" -o "$f" = "rw" ]; then
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nfsrw=$f
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continue
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fi
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if [ "$f" = "lock" -o "$f" = "nolock" ]; then
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nfslock=$f
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continue
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fi
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nfsflags=${nfsflags+$nfsflags,}$f
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done
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getarg ro && nfsrw=ro
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getarg rw && nfsrw=rw
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nfsflags=${nfsflags+$nfsflags,}${nfsrw}
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# Load the modules so the filesystem type is there
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modprobe nfs || exit 1
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# XXX don't forget to move /var/lib/nfs/rpc_pipefs to new /
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# Start rpcbind and rpc.statd as mount won't let us use locks on a NFSv4
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# filesystem without talking to them, even though they are unneeded
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# XXX occasionally saw 'rpcbind: fork failed: No such device' -- why?
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[ -n "$(pidof rpcbind)" ] || rpcbind
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[ -n "$(pidof rpc.statd)" ] || rpc.statd
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# XXX should I do rpc.idmapd here, or wait and start in the new root
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# XXX waiting assumes root can read everything it needs right up until
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# XXX we start it...
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# XXX really, want to retry in a loop I think, but not here...
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if [ "$nfsver" = "nfs4" ]; then
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# XXX really needed? Do we need non-root users before we start it in
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# XXX the real root image?
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if [ -z "$(pidof rpc.idmapd)" ]; then
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rpc.idmapd
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fi
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# NFSv4 does locks internally
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exec mount -t nfs4 -o${nfsflags}${nfslock+,$nfslock} \
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$nfsserver:$nfspath $NEWROOT
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fi
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# NFSv{2,3} doesn't support using locks as it requires a helper to transfer
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# the rpcbind state to the new root
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#
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[ -z "$nfslock" -o "$nfslock" = "lock" ] &&
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echo "Locks unsupported on NFSv{2,3}, using nolock" 1>&2
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exec mount -t nfs -onolock,$nfsflags $nfsserver:$nfspath $NEWROOT
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