private-lib: simplify installation of stdc

as modern-day Debian only keeps a single symbolic link in
/lib64, going through both directories systematically adds
virtually no overhead (as indicated by the timetrace). At
the same time it is simpler and more robust in producing a correct
representation of the filesystem.

1 files changed, 2 insertions, 7 deletions

diff --git a/src/firejail/fs_lib2.c b/src/firejail/fs_lib2.c
index 758e079a4..95e10ee05 100644
--- a/src/firejail/fs_lib2.c
+++ b/src/firejail/fs_lib2.c
@@ -108,18 +108,13 @@ void fslib_install_stdc(void) {
         // install standard C libraries
         timetrace_start();
         struct stat s;
-        char *stdclib = "/lib64";                 // CentOS, Fedora, Arch
-
         if (stat("/lib/x86_64-linux-gnu", &s) == 0) {   // Debian & friends
-                // PT_INTERP
-                fslib_duplicate("/lib64/ld-linux-x86-64.so.2");
-
                 mkdir_attr(RUN_LIB_DIR "/x86_64-linux-gnu", 0755, 0, 0);
                 selinux_relabel_path(RUN_LIB_DIR "/x86_64-linux-gnu", "/lib/x86_64-linux-gnu");
-                stdclib = "/lib/x86_64-linux-gnu";
+                stdc("/lib/x86_64-linux-gnu");
         }
 
-        stdc(stdclib);
+        stdc("/lib64"); // CentOS, Fedora, Arch, ld-linux.so in Debian & friends
 
         // install locale
         if (stat("/usr/lib/locale", &s) == 0)