upgraded: Check chroot() return value

[project/procd.git] / upgraded / upgraded.c

diff --git a/upgraded/upgraded.c b/upgraded/upgraded.c
index 09c623c..220da79 100644 (file)
--- a/upgraded/upgraded.c
+++ b/upgraded/upgraded.c
@@ -78,7 +78,10 @@ int main(int argc, char **argv)
                return 1;
        }
 
-       chroot(".");
+       if (chroot(".") < 0) {
+               fprintf(stderr, "failed to chroot: %s\n", strerror(errno));
+               return 1;
+       }
 
        if (fchdir(fd) == -1) {
                fprintf(stderr, "failed to chdir to prefix directory: %s\n", strerror(errno));