make_chroot: clobber existing /etc/mtab
If our sdk has an /etc/mtab file already, then clobber it. This fixes
build problems where chromeos-base now installs /etc/mtab for us, but
the sdk build isn't expecting it leading to the error:
INFO cros_sdk:make_chroot: Running init_setup()...
ln: creating symbolic link `/b/cbuild/new-sdk-chroot/etc/mtab': File exists
Running ['/b/cbuild/src/scripts/sdk_lib/make_chroot.sh', '--stage3_path',
'/b/cbuild/built-sdk.tar.xz', '--chroot', '/b/cbuild/new-sdk-chroot',
'--cache_dir', '/b/cbuild/.cache', '--nousepkg'] failed!
BUG=None
TEST=`cros_sdk --chroot foo` still works
Change-Id: I539cf329e93e28534e6ff00577ce415d76918b85
Reviewed-on: https://gerrit.chromium.org/gerrit/43641
Reviewed-by: David James <davidjames@chromium.org>
Commit-Queue: Mike Frysinger <vapier@chromium.org>
Tested-by: Mike Frysinger <vapier@chromium.org>
diff --git a/sdk_lib/make_chroot.sh b/sdk_lib/make_chroot.sh
index 63c4c79..e5a1d62 100755
--- a/sdk_lib/make_chroot.sh
+++ b/sdk_lib/make_chroot.sh
@@ -171,7 +171,7 @@
"${FLAGS_chroot}"/"${PORTAGE_STABLE_OVERLAY}"
# Some operations need an mtab.
- ln -s /proc/mounts "${FLAGS_chroot}/etc/mtab"
+ ln -sfT /proc/mounts "${FLAGS_chroot}/etc/mtab"
# Set up sudoers. Inside the chroot, the user can sudo without a password.
# (Safe enough, since the only way into the chroot is to 'sudo chroot', so