On 03/08/2012 11:52 PM, Allan McRae wrote:
On 09/03/12 12:43, Gerardo Exequiel Pozzi wrote:
We need /dev/ptmx ->  /dev/pts/ptmx (for devpts -o newinstance)
Other way to do this thing is via bind mount (as said kernel doc[devpts.txt]).

This should be done in this way at least for /dev as devtmpfs in the chroot.
Since we can not touch /dev (devtmpfs), because devtmpfs is "singleton",
just use bind method and avoid interference.

Do it the same for both modes of /dev (tmpfs) and (devtmpfs) to keep it simple.

Currently devpts in chroot is not working without this when using /dev as 
devtmpfs,
this fixes this issue (opening /dev/ptmx, creates devices nodes on outside 
/dev/pts)

Signed-off-by: Gerardo Exequiel Pozzi<vmlinuz...@yahoo.com.ar>
---
  mkarchroot.in |    3 ++-
  1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/mkarchroot.in b/mkarchroot.in
index d45cfba..efe0398 100644
--- a/mkarchroot.in
+++ b/mkarchroot.in
@@ -117,7 +117,7 @@ chroot_mount() {

        [[ -e "${working_dir}/dev/pts" ]] || mkdir "${working_dir}/dev/pts"
        mount -t devpts devpts "${working_dir}/dev/pts" -o 
newinstance,ptmxmode=666
-       ln -s pts/ptmx "${working_dir}/dev/ptmx"
+       mount -o bind ${working_dir}/dev/pts/ptmx" "${working_dir}/dev/ptmx"
Quote is missing...
oopss, bad patch, thanks.

        [[ -e $cache_dir ]] || mkdir -p "${cache_dir}"
        [[ -e "${working_dir}/${cache_dir}" ]] || mkdir -p 
"${working_dir}/${cache_dir}"
@@ -148,6 +148,7 @@ copy_hostconf () {
  chroot_umount () {
        umount "${working_dir}/proc"
        umount "${working_dir}/sys"
+       umount "${working_dir}/dev/ptmx"
        umount "${working_dir}/dev/pts"
        umount "${working_dir}/dev/shm"
        umount "${working_dir}/dev"



--
Gerardo Exequiel Pozzi
\cos^2\alpha + \sin^2\alpha = 1

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