83 lines
2.3 KiB
Diff
83 lines
2.3 KiB
Diff
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diff -ru elf~/dl-close.c elf/dl-close.c
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--- elf~/dl-close.c 2011-02-04 00:35:03.000000000 +0100
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+++ elf/dl-close.c 2011-02-22 02:16:12.367883000 +0100
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@@ -180,24 +186,28 @@
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/* Signal the object is still needed. */
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l->l_idx = IDX_STILL_USED;
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+#define mark_used(dmap) \
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+ do { \
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+ if ((dmap)->l_idx != IDX_STILL_USED) \
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+ { \
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+ assert ((dmap)->l_idx >= 0 && (dmap)->l_idx < nloaded); \
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+ \
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+ if (!used[(dmap)->l_idx]) \
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+ { \
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+ used[(dmap)->l_idx] = 1; \
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+ if ((dmap)->l_idx - 1 < done_index) \
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+ done_index = (dmap)->l_idx - 1; \
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+ } \
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+ } \
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+ } while (0)
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+
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/* Mark all dependencies as used. */
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if (l->l_initfini != NULL)
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{
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struct link_map **lp = &l->l_initfini[1];
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while (*lp != NULL)
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{
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- if ((*lp)->l_idx != IDX_STILL_USED)
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- {
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- assert ((*lp)->l_idx >= 0 && (*lp)->l_idx < nloaded);
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-
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- if (!used[(*lp)->l_idx])
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- {
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- used[(*lp)->l_idx] = 1;
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- if ((*lp)->l_idx - 1 < done_index)
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- done_index = (*lp)->l_idx - 1;
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- }
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- }
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-
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+ mark_used(*lp);
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++lp;
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}
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}
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@@ -206,19 +216,25 @@
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for (unsigned int j = 0; j < l->l_reldeps->act; ++j)
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{
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struct link_map *jmap = l->l_reldeps->list[j];
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-
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- if (jmap->l_idx != IDX_STILL_USED)
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- {
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- assert (jmap->l_idx >= 0 && jmap->l_idx < nloaded);
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-
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- if (!used[jmap->l_idx])
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- {
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- used[jmap->l_idx] = 1;
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- if (jmap->l_idx - 1 < done_index)
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- done_index = jmap->l_idx - 1;
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- }
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- }
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+ mark_used(jmap);
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}
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+ /* And the same for owners of our scopes; normally, our last
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+ scope provider would render us unused, but this can be
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+ prevented by the NODELETE flag. */
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+ if (__builtin_expect(l->l_type == lt_loaded
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+ && (l->l_flags_1 & DF_1_NODELETE), 0))
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+ for (size_t cnt = 0; l->l_scope[cnt] != NULL; ++cnt)
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+ /* This relies on l_scope[] entries being always set either
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+ to its own l_symbolic_searchlist address, or some map's
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+ l_searchlist address. */
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+ if (l->l_scope[cnt] != &l->l_symbolic_searchlist)
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+ {
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+ struct link_map *ls = (struct link_map *)
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+ ((char *) l->l_scope[cnt]
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+ - offsetof (struct link_map, l_searchlist));
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+ assert (ls->l_ns == nsid);
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+ mark_used(ls);
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+ }
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}
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/* Sort the entries. */
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