run the rescue shell with setctsid so that it gets a controlling tty

OBS-URL: https://build.opensuse.org/package/show/Virtualization/libguestfs?expand=0&rev=81

libguestfs.mkinitrd.boot.sh

@@ -87,6 +87,9 @@
 #%programs: date
 #%programs: valgrind
 #%programs: guestfsd
+#%programs: find
+#%programs: xargs
+#%programs: setctsid
 #
 # Generated at build time:
 #@GUESTFS_EXT_CMDS@
@@ -154,6 +157,10 @@ else
   # Use appliance in rescue mode, also used by the virt-rescue command.
   eval $(grep -Eo 'TERM=[^[:space:]]+' /proc/cmdline)
   PS1='><rescue> '
+  console_major_minor="`sed 's@^.* @@;p;Q' < /proc/consoles `"
+  console_dev="`find /sys/ -name dev -type f -print0 | xargs -0 --no-run-if-empty grep -m 1 -l ${console_major_minor}`"
+  console_kname=${console_dev%/dev}
+  console_kname=${console_kname##*/}
   export TERM PS1
   echo
   echo "------------------------------------------------------------"
@@ -164,7 +171,7 @@ else
   echo "You have to mount the guest's partitions under /sysroot"
   echo "before you can examine them."
   echo
-  bash -i
+  setctsid "/dev/${console_kname}" bash -i
   echo
   echo "virt-rescue: Syncing the disk now before exiting ..."
   echo