Add DEFAULT_PIVOT_ROOT var which can be changed at build time.
This allows the default pivot root included with the
minimalistic-mountns profile to be defined at build time. If it is not
set the original value /var/empty is used.
Bug: crbug.com/933582
Test: minijail builds successfully on both Android and CrOS
Change-Id: Ifa167d3d5d5725667b0d20ad47724af4abc24ae0
diff --git a/minijail0_cli.c b/minijail0_cli.c
index 2106ccb..d5b09f7 100644
--- a/minijail0_cli.c
+++ b/minijail0_cli.c
@@ -385,7 +385,7 @@
*tmp_size = DEFAULT_TMP_SIZE;
}
minijail_remount_proc_readonly(j);
- use_pivot_root(j, "/var/empty", pivot_root, chroot);
+ use_pivot_root(j, DEFAULT_PIVOT_ROOT, pivot_root, chroot);
} else {
fprintf(stderr, "Unrecognized profile name '%s'\n", profile);
exit(1);
