forked from pool/glibc
Andreas Schwab
30e48d0d7f
- Update to glibc 2.21 release.
* A new semaphore algorithm has been implemented in generic C code for all
machines
* Added support for TSX lock elision of pthread mutexes on powerpc32,
powerpc64 and powerpc64le
* Optimized strcpy, stpcpy, strchrnul and strrchr implementations for
AArch64
* i386 memcpy functions optimized with SSE2 unaligned load/store
* New locales: tu_IN, bh_IN, raj_IN, ce_RU
* The obsolete sigvec function has been removed
- Patches from upstream removed
* ifunc-x86-slow-sse4.patch
* pthread-mutex-trylock-elision.patch
- o-tmpfile.patch: Fix value of O_TMPFILE for architectures with
non-default O_DIRECTORY (BZ #17912)
OBS-URL: https://build.opensuse.org/request/show/285070
OBS-URL: https://build.opensuse.org/package/show/Base:System/glibc?expand=0&rev=391
58 lines
1.7 KiB
Diff
58 lines
1.7 KiB
Diff
Index: glibc-2.20/elf/rtld.c
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===================================================================
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--- glibc-2.20.orig/elf/rtld.c
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+++ glibc-2.20/elf/rtld.c
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@@ -1591,6 +1591,52 @@ ERROR: ld.so: object '%s' cannot be load
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}
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}
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+#if defined(__i386__)
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+ /*
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+ * Modifications by Red Hat Software
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+ *
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+ * Deal with the broken binaries from the non-versioned ages of glibc.
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+ * If a binary does not have version information enabled, we assume that
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+ * it is a glibc 2.0 binary and we load a compatibility library to try to
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+ * overcome binary incompatibilities.
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+ * Blame: gafton@redhat.com
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+ */
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+#define LIB_NOVERSION "/lib/obsolete/noversion/libNoVersion.so.1"
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+
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+ if (__glibc_unlikely (main_map->l_info[DT_NUM + DT_THISPROCNUM
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+ + DT_VERSIONTAGIDX (DT_VERNEED)]
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+ == NULL)
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+ && (main_map->l_info[DT_DEBUG] != 0
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+ || !(GLRO(dl_debug_mask) & DL_DEBUG_PRELINK)))
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+ {
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+ struct stat test_st;
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+ int test_fd;
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+ bool can_load;
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+
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+ HP_TIMING_NOW (start);
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+
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+ can_load = true;
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+ test_fd = __open (LIB_NOVERSION, O_RDONLY);
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+ if (test_fd < 0)
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+ can_load = false;
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+ else
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+ {
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+ if (__fxstat (_STAT_VER, test_fd, &test_st) < 0
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+ || test_st.st_size == 0)
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+ can_load = false;
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+ __close(test_fd);
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+ }
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+
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+ if (can_load)
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+ npreloads += do_preload (LIB_NOVERSION, main_map,
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+ "nonversioned binary");
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+
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+ HP_TIMING_NOW (stop);
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+ HP_TIMING_DIFF (diff, start, stop);
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+ HP_TIMING_ACCUM_NT (load_time, diff);
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+ }
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+#endif
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+
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if (__glibc_unlikely (*first_preload != NULL))
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{
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/* Set up PRELOADS with a vector of the preloaded libraries. */
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