utils: ignore ENOTSUP when chmod a symlink

commit 5d1f903f75a80daa4dfb3d84e114ec8ecbf29956 in the kernel, present in a release since Linux 6.6 doesn't allow anymore to change the mode of a symlink, so just ignore the failure. Closes: containers#1308 Signed-off-by: Giuseppe Scrivano <[email protected]>
giuseppe · Sep 22, 2023 · 0b2bf5e · 0b2bf5e
1 parent 905552d
commit 0b2bf5e
Showing 1 changed file with 4 additions and 0 deletions.
diff --git a/src/libcrun/utils.c b/src/libcrun/utils.c
@@ -2091,6 +2091,10 @@ copy_recursive_fd_to_fd (int srcdirfd, int dfd, const char *srcname, const char
               get_proc_self_fd_path (proc_path, fd);
 
               ret = chmod (proc_path, mode & ALLPERMS);
+              /* If the operation is still not supported, we are dealing with a
+                 symlink, so ignore it.  */
+              if (ret < 0 && errno == ENOTSUP)
+                return 0;
             }
 
           if (UNLIKELY (ret < 0))