glibc/glibc-2.3.90-noversion.diff

59 lines
1.8 KiB
Diff

Index: glibc-2.15/elf/rtld.c
===================================================================
--- glibc-2.15.orig/elf/rtld.c
+++ glibc-2.15/elf/rtld.c
@@ -1802,6 +1802,53 @@ ERROR: ld.so: object '%s' cannot be load
}
}
+#if defined(__i386__)
+ /*
+ * Modifications by Red Hat Software
+ *
+ * Deal with the broken binaries from the non-versioned ages of glibc.
+ * If a binary does not have version information enabled, we assume that
+ * it is a glibc 2.0 binary and we load a compatibility library to try to
+ * overcome binary incompatibilities.
+ * Blame: gafton@redhat.com
+ */
+#define LIB_NOVERSION "/lib/obsolete/noversion/libNoVersion.so.1"
+
+ if (__builtin_expect (main_map->l_info[DT_NUM + DT_THISPROCNUM
+ + DT_VERSIONTAGIDX (DT_VERNEED)]
+ == NULL, 0)
+ && (main_map->l_info[DT_DEBUG]
+ || !(GLRO(dl_debug_mask) & DL_DEBUG_PRELINK)))
+ {
+ struct stat test_st;
+ int test_fd;
+ int can_load;
+
+ HP_TIMING_NOW (start);
+
+ can_load = 1;
+ test_fd = __open (LIB_NOVERSION, O_RDONLY);
+ if (test_fd < 0) {
+ can_load = 0;
+ } else {
+ if (__fxstat (_STAT_VER, test_fd, &test_st) < 0 || test_st.st_size == 0) {
+ can_load = 0;
+ }
+ }
+
+ if (test_fd >= 0) /* open did no fail.. */
+ __close(test_fd); /* avoid fd leaks */
+
+ if (can_load != 0)
+ npreloads += do_preload (LIB_NOVERSION, main_map,
+ "nonversioned binary");
+
+ HP_TIMING_NOW (stop);
+ HP_TIMING_DIFF (diff, start, stop);
+ HP_TIMING_ACCUM_NT (load_time, diff);
+ }
+#endif
+
if (__builtin_expect (*first_preload != NULL, 0))
{
/* Set up PRELOADS with a vector of the preloaded libraries. */