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-rw-r--r--passt.c4
1 files changed, 3 insertions, 1 deletions
diff --git a/passt.c b/passt.c
index 3d18d1f..038d50a 100644
--- a/passt.c
+++ b/passt.c
@@ -260,7 +260,9 @@ static int sandbox(struct ctx *c)
mount("", "/", "", MS_UNBINDABLE | MS_REC, NULL);
mount("", TMPDIR, "tmpfs", MS_NODEV | MS_NOEXEC | MS_NOSUID | MS_RDONLY,
"nr_inodes=2,nr_blocks=0");
- chdir(TMPDIR);
+ if (chdir(TMPDIR))
+ return -errno;
+
syscall(SYS_pivot_root, ".", ".");
umount2(".", MNT_DETACH | UMOUNT_NOFOLLOW);