fix musl problem with dirname, now for all users of bb_make_directory()

function                                             old     new   delta
bb_make_directory                                    412     419      +7
install_main                                         793     769     -24
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 1/1 up/down: 7/-24)             Total: -17 bytes

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>

1 files changed, 3 insertions, 9 deletions

diff --git a/coreutils/install.c b/coreutils/install.c
index d0dcd0e89..831f9b802 100644
--- a/coreutils/install.c
+++ b/coreutils/install.c
@@ -209,16 +209,10 @@ int install_main(int argc, char **argv)
                         dest = last;
                         if (opts & OPT_MKDIR_LEADING) {
                                 char *ddir = xstrdup(dest);
-                                char *dn = dirname(ddir);
-                                /* musl can return read-only "/" or "." string.
-                                 * bb_make_directory needs writable string.
+                                bb_make_directory(dirname(ddir), 0755, mkdir_flags);
+                                /* errors are not checked. copy_file
+                                 * will fail if dir is not created.
                                  */
-                                if ((dn[0] != '/' && dn[0] != '.') || dn[1] != '\0') {
-                                        bb_make_directory(dn, 0755, mkdir_flags);
-                                        /* errors are not checked. copy_file
-                                         * will fail if dir is not created.
-                                         */
-                                }
                                 free(ddir);
                         }
                         if (isdir)