diff options
| -rw-r--r-- | src/nspawn/nspawn.c | 17 |
1 files changed, 12 insertions, 5 deletions
diff --git a/src/nspawn/nspawn.c b/src/nspawn/nspawn.c index f57c75ffee..5a43d5ed12 100644 --- a/src/nspawn/nspawn.c +++ b/src/nspawn/nspawn.c @@ -492,7 +492,8 @@ static int setup_timezone(const char *dest) { } static int setup_resolv_conf(const char *dest) { - char *where; + char _cleanup_free_ *where = NULL; + _cleanup_close_ int fd = -1; assert(dest); @@ -504,12 +505,18 @@ static int setup_resolv_conf(const char *dest) { if (!where) return log_oom(); + fd = open(where, O_WRONLY|O_CREAT|O_EXCL|O_CLOEXEC|O_NOCTTY|O_NOFOLLOW, 0644); + /* We don't really care for the results of this really. If it * fails, it fails, but meh... */ - if (mount("/etc/resolv.conf", where, "bind", MS_BIND, NULL) >= 0) - mount("/etc/resolv.conf", where, "bind", MS_BIND|MS_REMOUNT|MS_RDONLY, NULL); - - free(where); + if (mount("/etc/resolv.conf", where, "bind", MS_BIND, NULL) < 0) + log_warning("Failed to bind mount /etc/resolv.conf: %m"); + else + if (mount("/etc/resolv.conf", where, "bind", + MS_BIND|MS_REMOUNT|MS_RDONLY, NULL) < 0) { + log_error("Failed to remount /etc/resolv.conf readonly: %m"); + return -errno; + } return 0; } |