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adapt dynamic linker for new binutils versions that omit DT_RPATH 

the new DT_RUNPATH semantics for search order are always used, and
since binutils had always set both DT_RPATH and DT_RUNPATH when the
latter was used, processing only DT_RPATH worked fine. however, recent
binutils has stopped generating DT_RPATH when DT_RUNPATH is used,
which broke support for this feature completely.
This commit is contained in:
Rich Felker 2014-11-23 16:17:57 -05:00
parent 9911754b19
commit d8dc2b7c02
1 changed files with 2 additions and 0 deletions
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2
src/ldso/dynlink.c
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@ -645,6 +645,8 @@ static void decode_dyn(struct dso *p)
p->hashtab = (void *)(p->base + dyn[DT_HASH]);
if (dyn[0]&(1<<DT_RPATH))
p->rpath_orig = (void *)(p->strings + dyn[DT_RPATH]);
if (dyn[0]&(1<<DT_RUNPATH))
p->rpath_orig = (void *)(p->strings + dyn[DT_RUNPATH]);
if (search_vec(p->dynv, dyn, DT_GNU_HASH))
p->ghashtab = (void *)(p->base + *dyn);
if (search_vec(p->dynv, dyn, DT_VERSYM))