util: split out namespace related stuff into a new namespace-util.[ch] pair

Just some minor reorganiztion.

1 files changed, 0 insertions, 46 deletions

diff --git a/src/basic/stat-util.c b/src/basic/stat-util.c
index ea2bbc368b..2cd722c106 100644
--- a/src/basic/stat-util.c
+++ b/src/basic/stat-util.c
@@ -223,52 +223,6 @@ int fd_is_network_fs(int fd) {
         return is_network_fs(&s);
 }
 
-int fd_is_network_ns(int fd) {
-        struct statfs s;
-        int r;
-
-        /* Checks whether the specified file descriptor refers to a network namespace. On old kernels there's no nice
-         * way to detect that, hence on those we'll return a recognizable error (EUCLEAN), so that callers can handle
-         * this somewhat nicely.
-         *
-         * This function returns > 0 if the fd definitely refers to a network namespace, 0 if it definitely does not
-         * refer to a network namespace, -EUCLEAN if we can't determine, and other negative error codes on error. */
-
-        if (fstatfs(fd, &s) < 0)
-                return -errno;
-
-        if (!is_fs_type(&s, NSFS_MAGIC)) {
-                /* On really old kernels, there was no "nsfs", and network namespace sockets belonged to procfs
-                 * instead. Handle that in a somewhat smart way. */
-
-                if (is_fs_type(&s, PROC_SUPER_MAGIC)) {
-                        struct statfs t;
-
-                        /* OK, so it is procfs. Let's see if our own network namespace is procfs, too. If so, then the
-                         * passed fd might refer to a network namespace, but we can't know for sure. In that case,
-                         * return a recognizable error. */
-
-                        if (statfs("/proc/self/ns/net", &t) < 0)
-                                return -errno;
-
-                        if (s.f_type == t.f_type)
-                                return -EUCLEAN; /* It's possible, we simply don't know */
-                }
-
-                return 0; /* No! */
-        }
-
-        r = ioctl(fd, NS_GET_NSTYPE);
-        if (r < 0) {
-                if (errno == ENOTTY) /* Old kernels didn't know this ioctl, let's also return a recognizable error in that case */
-                        return -EUCLEAN;
-
-                return -errno;
-        }
-
-        return r == CLONE_NEWNET;
-}
-
 int path_is_temporary_fs(const char *path) {
         _cleanup_close_ int fd = -1;