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| author | H.J. Lu <hjl.tools@gmail.com> | 2021-09-16 08:15:29 -0700 |
|---|---|---|
| committer | H.J. Lu <hjl.tools@gmail.com> | 2021-09-22 11:12:43 -0700 |
| commit | b413280cfb16834450f66f554bc0d618bb513851 (patch) | |
| tree | fda69976f225c3085c1da42c9b9ab191fae6f61f /elf/Makefile | |
| parent | 4eff749e8f06d8f6c5fc8b37299e9e0409ed80ec (diff) | |
| download | glibc-b413280cfb16834450f66f554bc0d618bb513851.zip glibc-b413280cfb16834450f66f554bc0d618bb513851.tar.gz glibc-b413280cfb16834450f66f554bc0d618bb513851.tar.bz2 | |
ld.so: Replace DL_RO_DYN_SECTION with dl_relocate_ld [BZ #28340]
We can't relocate entries in dynamic section if it is readonly:
1. Add a l_ld_readonly field to struct link_map to indicate if dynamic
section is readonly and set it based on p_flags of PT_DYNAMIC segment.
2. Replace DL_RO_DYN_SECTION with dl_relocate_ld to decide if dynamic
section should be relocated.
3. Remove DL_RO_DYN_TEMP_CNT.
4. Don't use a static dynamic section to make readonly dynamic section
in vDSO writable.
5. Remove the temp argument from elf_get_dynamic_info.
This fixes BZ #28340.
Reviewed-by: Siddhesh Poyarekar <siddhesh@sourceware.org>
Diffstat (limited to 'elf/Makefile')
| -rw-r--r-- | elf/Makefile | 11 |
1 files changed, 9 insertions, 2 deletions
diff --git a/elf/Makefile b/elf/Makefile index 835b85b..0cdccaa 100644 --- a/elf/Makefile +++ b/elf/Makefile @@ -224,7 +224,7 @@ tests += restest1 preloadtest loadfail multiload origtest resolvfail \ tst-tls-ie tst-tls-ie-dlmopen argv0test \ tst-glibc-hwcaps tst-glibc-hwcaps-prepend tst-glibc-hwcaps-mask \ tst-tls20 tst-tls21 tst-dlmopen-dlerror tst-dlmopen-gethostbyname \ - tst-dl-is_dso + tst-dl-is_dso tst-ro-dynamic # reldep9 tests-internal += loadtest unload unload2 circleload1 \ neededtest neededtest2 neededtest3 neededtest4 \ @@ -360,7 +360,7 @@ modules-names = testobj1 testobj2 testobj3 testobj4 testobj5 testobj6 \ libmarkermod4-1 libmarkermod4-2 libmarkermod4-3 libmarkermod4-4 \ tst-tls20mod-bad tst-tls21mod tst-dlmopen-dlerror-mod \ tst-auxvalmod \ - tst-dlmopen-gethostbyname-mod \ + tst-dlmopen-gethostbyname-mod tst-ro-dynamic-mod \ # Most modules build with _ISOMAC defined, but those filtered out # depend on internal headers. @@ -1911,3 +1911,10 @@ $(objpfx)tst-getauxval-static.out: $(objpfx)tst-auxvalmod.so tst-getauxval-static-ENV = LD_LIBRARY_PATH=$(objpfx):$(common-objpfx) $(objpfx)tst-dlmopen-gethostbyname.out: $(objpfx)tst-dlmopen-gethostbyname-mod.so + +$(objpfx)tst-ro-dynamic: $(objpfx)tst-ro-dynamic-mod.so +$(objpfx)tst-ro-dynamic-mod.so: $(objpfx)tst-ro-dynamic-mod.os \ + tst-ro-dynamic-mod.map + $(LINK.o) -nostdlib -nostartfiles -shared -o $@ \ + -Wl,--script=tst-ro-dynamic-mod.map \ + $(objpfx)tst-ro-dynamic-mod.os |