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commit fcb04b9aed26a737159ef7be9c5a6ad0994437dc
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Author: Florian Weimer <fweimer@redhat.com>
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Date: Thu Oct 31 13:28:49 2019 +0100
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Introduce DL_LOOKUP_FOR_RELOCATE flag for _dl_lookup_symbol_x
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This will allow changes in dependency processing during non-lazy
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binding, for more precise processing of NODELETE objects: During
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initial relocation in dlopen, the fate of NODELETE objects is still
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unclear, so objects which are depended upon by NODELETE objects
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cannot immediately be marked as NODELETE.
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Change-Id: Ic7b94a3f7c4719a00ca8e6018088567824da0658
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diff --git a/elf/dl-reloc.c b/elf/dl-reloc.c
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index e7fb8da276094fc5..245f5ac49c1a9eea 100644
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--- a/elf/dl-reloc.c
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+++ b/elf/dl-reloc.c
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@@ -244,7 +244,8 @@ _dl_relocate_object (struct link_map *l, struct r_scope_elem *scope[],
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v = (version); \
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_lr = _dl_lookup_symbol_x (strtab + (*ref)->st_name, l, (ref), \
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scope, v, _tc, \
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- DL_LOOKUP_ADD_DEPENDENCY, NULL); \
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+ DL_LOOKUP_ADD_DEPENDENCY \
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+ | DL_LOOKUP_FOR_RELOCATE, NULL); \
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l->l_lookup_cache.ret = (*ref); \
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l->l_lookup_cache.value = _lr; })) \
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: l)
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diff --git a/sysdeps/generic/ldsodefs.h b/sysdeps/generic/ldsodefs.h
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index 42c2f0c4241ae1ed..445605ad9c67fa52 100644
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--- a/sysdeps/generic/ldsodefs.h
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+++ b/sysdeps/generic/ldsodefs.h
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@@ -899,6 +899,9 @@ enum
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DL_LOOKUP_RETURN_NEWEST = 2,
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/* Set if dl_lookup* called with GSCOPE lock held. */
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DL_LOOKUP_GSCOPE_LOCK = 4,
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+ /* Set if dl_lookup is called for non-lazy relocation processing
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+ from _dl_relocate_object in elf/dl-reloc.c. */
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+ DL_LOOKUP_FOR_RELOCATE = 8,
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};
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/* Lookup versioned symbol. */
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