1230 lines
46 KiB
Diff
1230 lines
46 KiB
Diff
commit 365624e2d2a342cdb693b4cc35d2312169959e28
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Author: Florian Weimer <fweimer@redhat.com>
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Date: Fri Dec 13 10:18:24 2019 +0100
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dlopen: Fix issues related to NODELETE handling and relocations
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The assumption behind the assert in activate_nodelete was wrong:
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Inconsistency detected by ld.so: dl-open.c: 459: activate_nodelete:
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Assertion `!imap->l_init_called || imap->l_type != lt_loaded' failed! (edit)
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It can happen that an already-loaded object that is in the local
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scope is promoted to NODELETE status, via binding to a unique
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symbol.
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Similarly, it is possible that such NODELETE promotion occurs to
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an already-loaded object from the global scope. This is why the
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loop in activate_nodelete has to cover all objects in the namespace
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of the new object.
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In do_lookup_unique, it could happen that the NODELETE status of
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an already-loaded object was overwritten with a pending NODELETE
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status. As a result, if dlopen fails, this could cause a loss of
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the NODELETE status of the affected object, eventually resulting
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in an incorrect unload.
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Fixes commit f63b73814f74032c0e5d0a83300e3d864ef905e5 ("Remove all
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loaded objects if dlopen fails, ignoring NODELETE [BZ #20839]").
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diff --git a/elf/Makefile b/elf/Makefile
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index 467e810e784bb96d..16a3e8dcda19b4ba 100644
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--- a/elf/Makefile
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+++ b/elf/Makefile
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@@ -185,7 +185,7 @@ tests += restest1 preloadtest loadfail multiload origtest resolvfail \
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tst-audit1 tst-audit2 tst-audit8 tst-audit9 \
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tst-addr1 tst-thrlock \
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tst-unique1 tst-unique2 $(if $(CXX),tst-unique3 tst-unique4 \
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- tst-nodelete) \
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+ tst-nodelete tst-dlopen-nodelete-reloc) \
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tst-initorder tst-initorder2 tst-relsort1 tst-null-argv \
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tst-tlsalign tst-tlsalign-extern tst-nodelete-opened \
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tst-nodelete2 tst-audit11 tst-audit12 tst-dlsym-error tst-noload \
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@@ -266,7 +266,24 @@ modules-names = testobj1 testobj2 testobj3 testobj4 testobj5 testobj6 \
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tst-auditmod9a tst-auditmod9b \
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$(if $(CXX),tst-unique3lib tst-unique3lib2 tst-unique4lib \
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tst-nodelete-uniquemod tst-nodelete-rtldmod \
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- tst-nodelete-zmod) \
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+ tst-nodelete-zmod \
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+ tst-dlopen-nodelete-reloc-mod1 \
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+ tst-dlopen-nodelete-reloc-mod2 \
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+ tst-dlopen-nodelete-reloc-mod3 \
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+ tst-dlopen-nodelete-reloc-mod4 \
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+ tst-dlopen-nodelete-reloc-mod5 \
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+ tst-dlopen-nodelete-reloc-mod6 \
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+ tst-dlopen-nodelete-reloc-mod7 \
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+ tst-dlopen-nodelete-reloc-mod8 \
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+ tst-dlopen-nodelete-reloc-mod9 \
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+ tst-dlopen-nodelete-reloc-mod10 \
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+ tst-dlopen-nodelete-reloc-mod11 \
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+ tst-dlopen-nodelete-reloc-mod12 \
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+ tst-dlopen-nodelete-reloc-mod13 \
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+ tst-dlopen-nodelete-reloc-mod14 \
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+ tst-dlopen-nodelete-reloc-mod15 \
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+ tst-dlopen-nodelete-reloc-mod16 \
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+ tst-dlopen-nodelete-reloc-mod17) \
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tst-initordera1 tst-initorderb1 \
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tst-initordera2 tst-initorderb2 \
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tst-initordera3 tst-initordera4 \
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@@ -1552,3 +1569,48 @@ $(objpfx)tst-dlopenfailmod1.so: \
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$(shared-thread-library) $(objpfx)tst-dlopenfaillinkmod.so
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LDFLAGS-tst-dlopenfaillinkmod.so = -Wl,-soname,tst-dlopenfail-missingmod.so
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$(objpfx)tst-dlopenfailmod2.so: $(shared-thread-library)
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+
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+$(objpfx)tst-dlopen-nodelete-reloc: $(libdl)
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+$(objpfx)tst-dlopen-nodelete-reloc.out: \
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+ $(objpfx)tst-dlopen-nodelete-reloc-mod1.so \
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+ $(objpfx)tst-dlopen-nodelete-reloc-mod2.so \
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+ $(objpfx)tst-dlopen-nodelete-reloc-mod3.so \
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+ $(objpfx)tst-dlopen-nodelete-reloc-mod4.so \
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+ $(objpfx)tst-dlopen-nodelete-reloc-mod5.so \
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+ $(objpfx)tst-dlopen-nodelete-reloc-mod6.so \
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+ $(objpfx)tst-dlopen-nodelete-reloc-mod7.so \
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+ $(objpfx)tst-dlopen-nodelete-reloc-mod8.so \
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+ $(objpfx)tst-dlopen-nodelete-reloc-mod9.so \
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+ $(objpfx)tst-dlopen-nodelete-reloc-mod10.so \
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+ $(objpfx)tst-dlopen-nodelete-reloc-mod11.so \
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+ $(objpfx)tst-dlopen-nodelete-reloc-mod12.so \
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+ $(objpfx)tst-dlopen-nodelete-reloc-mod13.so \
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+ $(objpfx)tst-dlopen-nodelete-reloc-mod14.so \
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+ $(objpfx)tst-dlopen-nodelete-reloc-mod15.so \
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+ $(objpfx)tst-dlopen-nodelete-reloc-mod16.so \
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+ $(objpfx)tst-dlopen-nodelete-reloc-mod17.so
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+tst-dlopen-nodelete-reloc-mod2.so-no-z-defs = yes
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+LDFLAGS-tst-dlopen-nodelete-reloc-mod2.so = -Wl,-z,nodelete
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+$(objpfx)tst-dlopen-nodelete-reloc-mod4.so: \
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+ $(objpfx)tst-dlopen-nodelete-reloc-mod3.so
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+LDFLAGS-tst-dlopen-nodelete-reloc-mod4.so = -Wl,--no-as-needed
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+$(objpfx)tst-dlopen-nodelete-reloc-mod5.so: \
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+ $(objpfx)tst-dlopen-nodelete-reloc-mod4.so
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+LDFLAGS-tst-dlopen-nodelete-reloc-mod5.so = -Wl,-z,nodelete,--no-as-needed
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+tst-dlopen-nodelete-reloc-mod5.so-no-z-defs = yes
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+tst-dlopen-nodelete-reloc-mod7.so-no-z-defs = yes
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+$(objpfx)tst-dlopen-nodelete-reloc-mod8.so: $(libdl)
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+$(objpfx)tst-dlopen-nodelete-reloc-mod10.so: $(libdl)
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+tst-dlopen-nodelete-reloc-mod11.so-no-z-defs = yes
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+$(objpfx)tst-dlopen-nodelete-reloc-mod13.so: \
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+ $(objpfx)tst-dlopen-nodelete-reloc-mod12.so
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+$(objpfx)tst-dlopen-nodelete-reloc-mod15.so: \
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+ $(objpfx)tst-dlopen-nodelete-reloc-mod14.so
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+tst-dlopen-nodelete-reloc-mod16.so-no-z-defs = yes
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+$(objpfx)tst-dlopen-nodelete-reloc-mod16.so: \
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+ $(objpfx)tst-dlopen-nodelete-reloc-mod15.so
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+LDFLAGS-tst-dlopen-nodelete-reloc-mod16.so = -Wl,--no-as-needed
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+$(objpfx)tst-dlopen-nodelete-reloc-mod17.so: \
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+ $(objpfx)tst-dlopen-nodelete-reloc-mod15.so \
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+ $(objpfx)tst-dlopen-nodelete-reloc-mod16.so
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+LDFLAGS-tst-dlopen-nodelete-reloc-mod17.so = -Wl,--no-as-needed
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diff --git a/elf/dl-lookup.c b/elf/dl-lookup.c
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index c5e5857fb1fe2808..35a3f96a6296294a 100644
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--- a/elf/dl-lookup.c
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+++ b/elf/dl-lookup.c
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@@ -311,12 +311,12 @@ do_lookup_unique (const char *undef_name, uint_fast32_t new_hash,
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enter_unique_sym (entries, size,
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new_hash, strtab + sym->st_name, sym, map);
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- if (map->l_type == lt_loaded)
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+ if (map->l_type == lt_loaded
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+ && map->l_nodelete == link_map_nodelete_inactive)
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{
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/* Make sure we don't unload this object by
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setting the appropriate flag. */
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- if (__glibc_unlikely (GLRO (dl_debug_mask) & DL_DEBUG_BINDINGS)
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- && map->l_nodelete == link_map_nodelete_inactive)
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+ if (__glibc_unlikely (GLRO (dl_debug_mask) & DL_DEBUG_BINDINGS))
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_dl_debug_printf ("\
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marking %s [%lu] as NODELETE due to unique symbol\n",
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map->l_name, map->l_ns);
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diff --git a/elf/dl-open.c b/elf/dl-open.c
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index e13968d4d7c4c83f..c7ed85b7ee99a296 100644
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--- a/elf/dl-open.c
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+++ b/elf/dl-open.c
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@@ -433,34 +433,21 @@ TLS generation counter wrapped! Please report this."));
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after dlopen failure is not possible, so that _dl_close can clean
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up objects if necessary. */
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static void
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-activate_nodelete (struct link_map *new, int mode)
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+activate_nodelete (struct link_map *new)
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{
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- if (mode & RTLD_NODELETE || new->l_nodelete == link_map_nodelete_pending)
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- {
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- if (__glibc_unlikely (GLRO (dl_debug_mask) & DL_DEBUG_FILES))
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- _dl_debug_printf ("activating NODELETE for %s [%lu]\n",
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- new->l_name, new->l_ns);
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- new->l_nodelete = link_map_nodelete_active;
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- }
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-
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- for (unsigned int i = 0; i < new->l_searchlist.r_nlist; ++i)
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- {
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- struct link_map *imap = new->l_searchlist.r_list[i];
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- if (imap->l_nodelete == link_map_nodelete_pending)
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- {
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- if (__glibc_unlikely (GLRO (dl_debug_mask) & DL_DEBUG_FILES))
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- _dl_debug_printf ("activating NODELETE for %s [%lu]\n",
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- imap->l_name, imap->l_ns);
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-
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- /* Only new objects should have set
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- link_map_nodelete_pending. Existing objects should not
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- have gained any new dependencies and therefore cannot
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- reach NODELETE status. */
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- assert (!imap->l_init_called || imap->l_type != lt_loaded);
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+ /* It is necessary to traverse the entire namespace. References to
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+ objects in the global scope and unique symbol bindings can force
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+ NODELETE status for objects outside the local scope. */
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+ for (struct link_map *l = GL (dl_ns)[new->l_ns]._ns_loaded; l != NULL;
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+ l = l->l_next)
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+ if (l->l_nodelete == link_map_nodelete_pending)
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+ {
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+ if (__glibc_unlikely (GLRO (dl_debug_mask) & DL_DEBUG_FILES))
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+ _dl_debug_printf ("activating NODELETE for %s [%lu]\n",
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+ l->l_name, l->l_ns);
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- imap->l_nodelete = link_map_nodelete_active;
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- }
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- }
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+ l->l_nodelete = link_map_nodelete_active;
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+ }
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}
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/* struct dl_init_args and call_dl_init are used to call _dl_init with
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@@ -718,7 +705,7 @@ dl_open_worker (void *a)
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All memory allocations for new objects must have happened
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before. */
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- activate_nodelete (new, mode);
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+ activate_nodelete (new);
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/* Second stage after resize_scopes: Actually perform the scope
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update. After this, dlsym and lazy binding can bind to new
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diff --git a/elf/tst-dlopen-nodelete-reloc-mod1.c b/elf/tst-dlopen-nodelete-reloc-mod1.c
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new file mode 100644
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index 0000000000000000..397d60a2d5ea62d9
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--- /dev/null
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+++ b/elf/tst-dlopen-nodelete-reloc-mod1.c
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@@ -0,0 +1,39 @@
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+/* Test propagation of NODELETE to an already-loaded object via relocation.
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+ Non-NODELETE helper module.
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+ Copyright (C) 2019 Free Software Foundation, Inc.
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+ This file is part of the GNU C Library.
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+
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+ The GNU C Library is free software; you can redistribute it and/or
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+ modify it under the terms of the GNU Lesser General Public
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+ License as published by the Free Software Foundation; either
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+ version 2.1 of the License, or (at your option) any later version.
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+
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+ The GNU C Library is distributed in the hope that it will be useful,
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+ but WITHOUT ANY WARRANTY; without even the implied warranty of
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+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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+ Lesser General Public License for more details.
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+
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+ You should have received a copy of the GNU Lesser General Public
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+ License along with the GNU C Library; if not, see
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+ <https://www.gnu.org/licenses/>. */
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+
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+#include <stdbool.h>
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+#include <stdio.h>
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+#include <unistd.h>
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+
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+/* Globally exported. Set by the main program to true before
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+ termination, and used by tst-dlopen-nodelete-reloc-mod2.so to
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+ trigger marking this module as NODELETE (and also for its destructor
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+ check). */
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+bool may_finalize_mod1 = false;
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+
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+static void __attribute__ ((destructor))
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+fini (void)
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+{
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+ if (!may_finalize_mod1)
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+ {
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+ puts ("error: tst-dlopen-nodelete-reloc-mod1.so destructor"
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+ " called too early");
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+ _exit (1);
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+ }
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+}
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diff --git a/elf/tst-dlopen-nodelete-reloc-mod10.c b/elf/tst-dlopen-nodelete-reloc-mod10.c
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new file mode 100644
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index 0000000000000000..30748b73ec7daed3
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--- /dev/null
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+++ b/elf/tst-dlopen-nodelete-reloc-mod10.c
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@@ -0,0 +1,41 @@
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+/* Helper module to load tst-dlopen-nodelete-reloc-mod11.so.
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+ Copyright (C) 2019 Free Software Foundation, Inc.
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+ This file is part of the GNU C Library.
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+
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+ The GNU C Library is free software; you can redistribute it and/or
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+ modify it under the terms of the GNU Lesser General Public
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+ License as published by the Free Software Foundation; either
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+ version 2.1 of the License, or (at your option) any later version.
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+
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+ The GNU C Library is distributed in the hope that it will be useful,
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+ but WITHOUT ANY WARRANTY; without even the implied warranty of
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+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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+ Lesser General Public License for more details.
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+
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+ You should have received a copy of the GNU Lesser General Public
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+ License along with the GNU C Library; if not, see
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+ <https://www.gnu.org/licenses/>. */
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+
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+#include <dlfcn.h>
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+#include <stddef.h>
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+#include <stdio.h>
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+#include <unistd.h>
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+
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+static void *handle;
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+
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+static void __attribute__ ((constructor))
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+init (void)
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+{
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+ handle = dlopen ("tst-dlopen-nodelete-reloc-mod11.so", RTLD_NOW);
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+ if (handle == NULL)
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+ {
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+ printf ("error: dlopen in module 10: %s\n", dlerror ());
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+ _exit (1);
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+ }
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+}
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+
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+static void __attribute__ ((destructor))
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+fini (void)
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+{
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+ dlclose (handle);
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+}
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diff --git a/elf/tst-dlopen-nodelete-reloc-mod11.cc b/elf/tst-dlopen-nodelete-reloc-mod11.cc
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new file mode 100644
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index 0000000000000000..48c910403e782c83
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--- /dev/null
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+++ b/elf/tst-dlopen-nodelete-reloc-mod11.cc
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@@ -0,0 +1,49 @@
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+/* Second module defining a unique symbol (loaded indirectly).
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+ Copyright (C) 2019 Free Software Foundation, Inc.
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+ This file is part of the GNU C Library.
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+
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+ The GNU C Library is free software; you can redistribute it and/or
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+ modify it under the terms of the GNU Lesser General Public
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+ License as published by the Free Software Foundation; either
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+ version 2.1 of the License, or (at your option) any later version.
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+
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+ The GNU C Library is distributed in the hope that it will be useful,
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+ but WITHOUT ANY WARRANTY; without even the implied warranty of
|
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+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
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+ Lesser General Public License for more details.
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+
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+ You should have received a copy of the GNU Lesser General Public
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+ License along with the GNU C Library; if not, see
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+ <https://www.gnu.org/licenses/>. */
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+
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+#include "tst-dlopen-nodelete-reloc.h"
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+
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+#include <stdbool.h>
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+#include <stdio.h>
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+#include <unistd.h>
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+
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+/* Just a flag here, not used for NODELETE processing. */
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+bool may_finalize_mod11 = false;
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+
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+/* Trigger the creation of a unique symbol reference. This should
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+ cause tst-dlopen-nodelete-reloc-mod9.so to be marked as
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+ NODELETE. */
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+
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+extern template struct unique_symbol<9>;
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+
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+int
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+global_function_mod11 (void)
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+{
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+ return unique_symbol<9>::value;
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+}
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+
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+static void __attribute__ ((destructor))
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+fini (void)
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+{
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+ if (!may_finalize_mod11)
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+ {
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+ puts ("error: tst-dlopen-nodelete-reloc-mod11.so destructor"
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+ " called too early");
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+ _exit (1);
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+ }
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+}
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diff --git a/elf/tst-dlopen-nodelete-reloc-mod12.cc b/elf/tst-dlopen-nodelete-reloc-mod12.cc
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new file mode 100644
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index 0000000000000000..5c093fd02d1fd0c7
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--- /dev/null
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+++ b/elf/tst-dlopen-nodelete-reloc-mod12.cc
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@@ -0,0 +1,42 @@
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+/* First module for NODELETE test defining a unique symbol (with DT_NEEDED).
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+ Copyright (C) 2019 Free Software Foundation, Inc.
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+ This file is part of the GNU C Library.
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+
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+ The GNU C Library is free software; you can redistribute it and/or
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+ modify it under the terms of the GNU Lesser General Public
|
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+ License as published by the Free Software Foundation; either
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+ version 2.1 of the License, or (at your option) any later version.
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+
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+ The GNU C Library is distributed in the hope that it will be useful,
|
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+ but WITHOUT ANY WARRANTY; without even the implied warranty of
|
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+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
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+ Lesser General Public License for more details.
|
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+
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+ You should have received a copy of the GNU Lesser General Public
|
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+ License along with the GNU C Library; if not, see
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+ <https://www.gnu.org/licenses/>. */
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+
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+#include "tst-dlopen-nodelete-reloc.h"
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+
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+#include <stdbool.h>
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+#include <stdio.h>
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+#include <unistd.h>
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+
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+/* Just a flag here, not used for NODELETE processing. */
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+bool may_finalize_mod12 = false;
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+
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+/* Explicit instantiation. This produces a unique symbol definition
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+ which is not referenced by the library itself, so the library is
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+ not marked NODELETE. */
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+template struct unique_symbol<12>;
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+
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+static void __attribute__ ((destructor))
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+fini (void)
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+{
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|
+ if (!may_finalize_mod12)
|
|
+ {
|
|
+ puts ("error: tst-dlopen-nodelete-reloc-mod12.so destructor"
|
|
+ " called too early");
|
|
+ _exit (1);
|
|
+ }
|
|
+}
|
|
diff --git a/elf/tst-dlopen-nodelete-reloc-mod13.cc b/elf/tst-dlopen-nodelete-reloc-mod13.cc
|
|
new file mode 100644
|
|
index 0000000000000000..caf4fd1cc9e1c1e1
|
|
--- /dev/null
|
|
+++ b/elf/tst-dlopen-nodelete-reloc-mod13.cc
|
|
@@ -0,0 +1,48 @@
|
|
+/* Second module for NODELETE test defining a unique symbol (with DT_NEEDED).
|
|
+ Copyright (C) 2019 Free Software Foundation, Inc.
|
|
+ This file is part of the GNU C Library.
|
|
+
|
|
+ The GNU C Library is free software; you can redistribute it and/or
|
|
+ modify it under the terms of the GNU Lesser General Public
|
|
+ License as published by the Free Software Foundation; either
|
|
+ version 2.1 of the License, or (at your option) any later version.
|
|
+
|
|
+ The GNU C Library is distributed in the hope that it will be useful,
|
|
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
+ Lesser General Public License for more details.
|
|
+
|
|
+ You should have received a copy of the GNU Lesser General Public
|
|
+ License along with the GNU C Library; if not, see
|
|
+ <https://www.gnu.org/licenses/>. */
|
|
+
|
|
+#include "tst-dlopen-nodelete-reloc.h"
|
|
+
|
|
+#include <stdbool.h>
|
|
+#include <stdio.h>
|
|
+#include <unistd.h>
|
|
+
|
|
+/* Just a flag here, not used for NODELETE processing. */
|
|
+bool may_finalize_mod13 = false;
|
|
+
|
|
+extern template struct unique_symbol<12>;
|
|
+
|
|
+/* Trigger the creation of a unique symbol reference. This should
|
|
+ cause tst-dlopen-nodelete-reloc-mod12.so to be marked as
|
|
+ NODELETE. */
|
|
+int
|
|
+global_function_mod13 (void)
|
|
+{
|
|
+ return unique_symbol<12>::value;
|
|
+}
|
|
+
|
|
+static void __attribute__ ((destructor))
|
|
+fini (void)
|
|
+{
|
|
+ if (!may_finalize_mod13)
|
|
+ {
|
|
+ puts ("error: tst-dlopen-nodelete-reloc-mod13.so destructor"
|
|
+ " called too early");
|
|
+ _exit (1);
|
|
+ }
|
|
+}
|
|
diff --git a/elf/tst-dlopen-nodelete-reloc-mod13.h b/elf/tst-dlopen-nodelete-reloc-mod13.h
|
|
new file mode 100644
|
|
index 0000000000000000..5d338481a34a5714
|
|
--- /dev/null
|
|
+++ b/elf/tst-dlopen-nodelete-reloc-mod13.h
|
|
@@ -0,0 +1,24 @@
|
|
+/* Inline function which produces a unique symbol.
|
|
+ Copyright (C) 2019 Free Software Foundation, Inc.
|
|
+ This file is part of the GNU C Library.
|
|
+
|
|
+ The GNU C Library is free software; you can redistribute it and/or
|
|
+ modify it under the terms of the GNU Lesser General Public
|
|
+ License as published by the Free Software Foundation; either
|
|
+ version 2.1 of the License, or (at your option) any later version.
|
|
+
|
|
+ The GNU C Library is distributed in the hope that it will be useful,
|
|
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
+ Lesser General Public License for more details.
|
|
+
|
|
+ You should have received a copy of the GNU Lesser General Public
|
|
+ License along with the GNU C Library; if not, see
|
|
+ <https://www.gnu.org/licenses/>. */
|
|
+
|
|
+inline char *
|
|
+third_function_with_local_static (void)
|
|
+{
|
|
+ static char local;
|
|
+ return &local;
|
|
+}
|
|
diff --git a/elf/tst-dlopen-nodelete-reloc-mod14.cc b/elf/tst-dlopen-nodelete-reloc-mod14.cc
|
|
new file mode 100644
|
|
index 0000000000000000..e67621a2a2f8509a
|
|
--- /dev/null
|
|
+++ b/elf/tst-dlopen-nodelete-reloc-mod14.cc
|
|
@@ -0,0 +1,42 @@
|
|
+/* This object must retain NODELETE status after a dlopen failure.
|
|
+ Copyright (C) 2019 Free Software Foundation, Inc.
|
|
+ This file is part of the GNU C Library.
|
|
+
|
|
+ The GNU C Library is free software; you can redistribute it and/or
|
|
+ modify it under the terms of the GNU Lesser General Public
|
|
+ License as published by the Free Software Foundation; either
|
|
+ version 2.1 of the License, or (at your option) any later version.
|
|
+
|
|
+ The GNU C Library is distributed in the hope that it will be useful,
|
|
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
+ Lesser General Public License for more details.
|
|
+
|
|
+ You should have received a copy of the GNU Lesser General Public
|
|
+ License along with the GNU C Library; if not, see
|
|
+ <https://www.gnu.org/licenses/>. */
|
|
+
|
|
+#include "tst-dlopen-nodelete-reloc.h"
|
|
+
|
|
+#include <stdbool.h>
|
|
+#include <stdio.h>
|
|
+#include <unistd.h>
|
|
+
|
|
+/* Just a flag here, not used for NODELETE processing. */
|
|
+bool may_finalize_mod14 = false;
|
|
+
|
|
+/* Explicit instantiation. This produces a unique symbol definition
|
|
+ which is not referenced by the library itself, so the library is
|
|
+ not marked NODELETE. */
|
|
+template struct unique_symbol<14>;
|
|
+
|
|
+static void __attribute__ ((destructor))
|
|
+fini (void)
|
|
+{
|
|
+ if (!may_finalize_mod14)
|
|
+ {
|
|
+ puts ("error: tst-dlopen-nodelete-reloc-mod14.so destructor"
|
|
+ " called too early");
|
|
+ _exit (1);
|
|
+ }
|
|
+}
|
|
diff --git a/elf/tst-dlopen-nodelete-reloc-mod15.cc b/elf/tst-dlopen-nodelete-reloc-mod15.cc
|
|
new file mode 100644
|
|
index 0000000000000000..ead362bfdbb90eef
|
|
--- /dev/null
|
|
+++ b/elf/tst-dlopen-nodelete-reloc-mod15.cc
|
|
@@ -0,0 +1,42 @@
|
|
+/* Helper object to mark tst-dlopen-nodelete-reloc-mod14.so as NODELETE.
|
|
+ Copyright (C) 2019 Free Software Foundation, Inc.
|
|
+ This file is part of the GNU C Library.
|
|
+
|
|
+ The GNU C Library is free software; you can redistribute it and/or
|
|
+ modify it under the terms of the GNU Lesser General Public
|
|
+ License as published by the Free Software Foundation; either
|
|
+ version 2.1 of the License, or (at your option) any later version.
|
|
+
|
|
+ The GNU C Library is distributed in the hope that it will be useful,
|
|
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
+ Lesser General Public License for more details.
|
|
+
|
|
+ You should have received a copy of the GNU Lesser General Public
|
|
+ License along with the GNU C Library; if not, see
|
|
+ <https://www.gnu.org/licenses/>. */
|
|
+
|
|
+#include "tst-dlopen-nodelete-reloc.h"
|
|
+
|
|
+#include <stdbool.h>
|
|
+#include <stdio.h>
|
|
+#include <unistd.h>
|
|
+
|
|
+extern template struct unique_symbol<14>;
|
|
+
|
|
+/* Trigger the creation of a unique symbol reference. This should
|
|
+ cause tst-dlopen-nodelete-reloc-mod14.so to be marked as
|
|
+ NODELETE. */
|
|
+int
|
|
+global_function_mod15 (void)
|
|
+{
|
|
+ return unique_symbol<14>::value;
|
|
+}
|
|
+
|
|
+static void __attribute__ ((destructor))
|
|
+fini (void)
|
|
+{
|
|
+ /* This object is never loaded completely. */
|
|
+ puts ("error: tst-dlopen-nodelete-reloc-mod15.so destructor invoked");
|
|
+ _exit (1);
|
|
+}
|
|
diff --git a/elf/tst-dlopen-nodelete-reloc-mod16.c b/elf/tst-dlopen-nodelete-reloc-mod16.c
|
|
new file mode 100644
|
|
index 0000000000000000..fa2ed1461b42c82c
|
|
--- /dev/null
|
|
+++ b/elf/tst-dlopen-nodelete-reloc-mod16.c
|
|
@@ -0,0 +1,27 @@
|
|
+/* Object with an undefined symbol to trigger a relocation failure.
|
|
+ Copyright (C) 2019 Free Software Foundation, Inc.
|
|
+ This file is part of the GNU C Library.
|
|
+
|
|
+ The GNU C Library is free software; you can redistribute it and/or
|
|
+ modify it under the terms of the GNU Lesser General Public
|
|
+ License as published by the Free Software Foundation; either
|
|
+ version 2.1 of the License, or (at your option) any later version.
|
|
+
|
|
+ The GNU C Library is distributed in the hope that it will be useful,
|
|
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
+ Lesser General Public License for more details.
|
|
+
|
|
+ You should have received a copy of the GNU Lesser General Public
|
|
+ License along with the GNU C Library; if not, see
|
|
+ <https://www.gnu.org/licenses/>. */
|
|
+
|
|
+/* The reference to undefined_mod16 triggers a relocation failure. */
|
|
+
|
|
+extern int undefined_mod16;
|
|
+
|
|
+int
|
|
+global_function_mod16 (void)
|
|
+{
|
|
+ return undefined_mod16;
|
|
+}
|
|
diff --git a/elf/tst-dlopen-nodelete-reloc-mod17.c b/elf/tst-dlopen-nodelete-reloc-mod17.c
|
|
new file mode 100644
|
|
index 0000000000000000..426562edd9a3ffee
|
|
--- /dev/null
|
|
+++ b/elf/tst-dlopen-nodelete-reloc-mod17.c
|
|
@@ -0,0 +1,19 @@
|
|
+/* Top-level object with dependency on an object that fails relocation.
|
|
+ Copyright (C) 2019 Free Software Foundation, Inc.
|
|
+ This file is part of the GNU C Library.
|
|
+
|
|
+ The GNU C Library is free software; you can redistribute it and/or
|
|
+ modify it under the terms of the GNU Lesser General Public
|
|
+ License as published by the Free Software Foundation; either
|
|
+ version 2.1 of the License, or (at your option) any later version.
|
|
+
|
|
+ The GNU C Library is distributed in the hope that it will be useful,
|
|
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
+ Lesser General Public License for more details.
|
|
+
|
|
+ You should have received a copy of the GNU Lesser General Public
|
|
+ License along with the GNU C Library; if not, see
|
|
+ <https://www.gnu.org/licenses/>. */
|
|
+
|
|
+/* The dependencies do all the work. */
|
|
diff --git a/elf/tst-dlopen-nodelete-reloc-mod2.c b/elf/tst-dlopen-nodelete-reloc-mod2.c
|
|
new file mode 100644
|
|
index 0000000000000000..81ea8e5af2d00b93
|
|
--- /dev/null
|
|
+++ b/elf/tst-dlopen-nodelete-reloc-mod2.c
|
|
@@ -0,0 +1,38 @@
|
|
+/* Test propagation of NODELETE to an already-loaded object via relocation.
|
|
+ NODELETE helper module.
|
|
+ Copyright (C) 2019 Free Software Foundation, Inc.
|
|
+ This file is part of the GNU C Library.
|
|
+
|
|
+ The GNU C Library is free software; you can redistribute it and/or
|
|
+ modify it under the terms of the GNU Lesser General Public
|
|
+ License as published by the Free Software Foundation; either
|
|
+ version 2.1 of the License, or (at your option) any later version.
|
|
+
|
|
+ The GNU C Library is distributed in the hope that it will be useful,
|
|
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
+ Lesser General Public License for more details.
|
|
+
|
|
+ You should have received a copy of the GNU Lesser General Public
|
|
+ License along with the GNU C Library; if not, see
|
|
+ <https://www.gnu.org/licenses/>. */
|
|
+
|
|
+#include <stdbool.h>
|
|
+#include <stdio.h>
|
|
+#include <unistd.h>
|
|
+
|
|
+/* Defined in tst-dlopen-nodelete-reloc-mod1.so. This dependency is
|
|
+ not expressed via DT_NEEDED, so this reference marks the other
|
|
+ object as NODELETE dynamically, during initially relocation. */
|
|
+extern bool may_finalize_mod1;
|
|
+
|
|
+static void __attribute__ ((destructor))
|
|
+fini (void)
|
|
+{
|
|
+ if (!may_finalize_mod1)
|
|
+ {
|
|
+ puts ("error: tst-dlopen-nodelete-reloc-mod2.so destructor"
|
|
+ " called too early");
|
|
+ _exit (1);
|
|
+ }
|
|
+}
|
|
diff --git a/elf/tst-dlopen-nodelete-reloc-mod3.c b/elf/tst-dlopen-nodelete-reloc-mod3.c
|
|
new file mode 100644
|
|
index 0000000000000000..d33f4ec7630c6a1e
|
|
--- /dev/null
|
|
+++ b/elf/tst-dlopen-nodelete-reloc-mod3.c
|
|
@@ -0,0 +1,38 @@
|
|
+/* Test propagation of NODELETE to an already-loaded object via relocation.
|
|
+ Non-NODELETE helper module.
|
|
+ Copyright (C) 2019 Free Software Foundation, Inc.
|
|
+ This file is part of the GNU C Library.
|
|
+
|
|
+ The GNU C Library is free software; you can redistribute it and/or
|
|
+ modify it under the terms of the GNU Lesser General Public
|
|
+ License as published by the Free Software Foundation; either
|
|
+ version 2.1 of the License, or (at your option) any later version.
|
|
+
|
|
+ The GNU C Library is distributed in the hope that it will be useful,
|
|
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
+ Lesser General Public License for more details.
|
|
+
|
|
+ You should have received a copy of the GNU Lesser General Public
|
|
+ License along with the GNU C Library; if not, see
|
|
+ <https://www.gnu.org/licenses/>. */
|
|
+
|
|
+#include <stdbool.h>
|
|
+#include <stdio.h>
|
|
+#include <unistd.h>
|
|
+
|
|
+/* Globally exported. Set by the main program to true before
|
|
+ termination, and used by tst-dlopen-nodelete-reloc-mod4.so,
|
|
+ tst-dlopen-nodelete-reloc-mod5.so. */
|
|
+bool may_finalize_mod3 = false;
|
|
+
|
|
+static void __attribute__ ((destructor))
|
|
+fini (void)
|
|
+{
|
|
+ if (!may_finalize_mod3)
|
|
+ {
|
|
+ puts ("error: tst-dlopen-nodelete-reloc-mod3.so destructor"
|
|
+ " called too early");
|
|
+ _exit (1);
|
|
+ }
|
|
+}
|
|
diff --git a/elf/tst-dlopen-nodelete-reloc-mod4.c b/elf/tst-dlopen-nodelete-reloc-mod4.c
|
|
new file mode 100644
|
|
index 0000000000000000..7e6633aebb1e2f00
|
|
--- /dev/null
|
|
+++ b/elf/tst-dlopen-nodelete-reloc-mod4.c
|
|
@@ -0,0 +1,37 @@
|
|
+/* Test propagation of NODELETE to an already-loaded object via relocation.
|
|
+ Intermediate helper module.
|
|
+ Copyright (C) 2019 Free Software Foundation, Inc.
|
|
+ This file is part of the GNU C Library.
|
|
+
|
|
+ The GNU C Library is free software; you can redistribute it and/or
|
|
+ modify it under the terms of the GNU Lesser General Public
|
|
+ License as published by the Free Software Foundation; either
|
|
+ version 2.1 of the License, or (at your option) any later version.
|
|
+
|
|
+ The GNU C Library is distributed in the hope that it will be useful,
|
|
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
+ Lesser General Public License for more details.
|
|
+
|
|
+ You should have received a copy of the GNU Lesser General Public
|
|
+ License along with the GNU C Library; if not, see
|
|
+ <https://www.gnu.org/licenses/>. */
|
|
+
|
|
+#include <stdbool.h>
|
|
+#include <stdio.h>
|
|
+#include <unistd.h>
|
|
+
|
|
+/* Defined in tst-dlopen-nodelete-reloc-mod3.so. The dependency is
|
|
+ expressed via DT_NEEDED. */
|
|
+extern bool may_finalize_mod3;
|
|
+
|
|
+static void __attribute__ ((destructor))
|
|
+fini (void)
|
|
+{
|
|
+ if (!may_finalize_mod3)
|
|
+ {
|
|
+ puts ("error: tst-dlopen-nodelete-reloc-mod4.so destructor"
|
|
+ " called too early");
|
|
+ _exit (1);
|
|
+ }
|
|
+}
|
|
diff --git a/elf/tst-dlopen-nodelete-reloc-mod5.c b/elf/tst-dlopen-nodelete-reloc-mod5.c
|
|
new file mode 100644
|
|
index 0000000000000000..22aa16f855dc75a8
|
|
--- /dev/null
|
|
+++ b/elf/tst-dlopen-nodelete-reloc-mod5.c
|
|
@@ -0,0 +1,38 @@
|
|
+/* Test propagation of NODELETE to an already-loaded object via relocation.
|
|
+ NODELETE helper module.
|
|
+ Copyright (C) 2019 Free Software Foundation, Inc.
|
|
+ This file is part of the GNU C Library.
|
|
+
|
|
+ The GNU C Library is free software; you can redistribute it and/or
|
|
+ modify it under the terms of the GNU Lesser General Public
|
|
+ License as published by the Free Software Foundation; either
|
|
+ version 2.1 of the License, or (at your option) any later version.
|
|
+
|
|
+ The GNU C Library is distributed in the hope that it will be useful,
|
|
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
+ Lesser General Public License for more details.
|
|
+
|
|
+ You should have received a copy of the GNU Lesser General Public
|
|
+ License along with the GNU C Library; if not, see
|
|
+ <https://www.gnu.org/licenses/>. */
|
|
+
|
|
+#include <stdbool.h>
|
|
+#include <stdio.h>
|
|
+#include <unistd.h>
|
|
+
|
|
+/* Defined in tst-dlopen-nodelete-reloc-mod3.so. The dependency is
|
|
+ expressed via DT_NEEDED on the intermediate DSO
|
|
+ tst-dlopen-nodelete-reloc-mod3.so. */
|
|
+extern bool may_finalize_mod3;
|
|
+
|
|
+static void __attribute__ ((destructor))
|
|
+fini (void)
|
|
+{
|
|
+ if (!may_finalize_mod3)
|
|
+ {
|
|
+ puts ("error: tst-dlopen-nodelete-reloc-mod5.so destructor"
|
|
+ " called too early");
|
|
+ _exit (1);
|
|
+ }
|
|
+}
|
|
diff --git a/elf/tst-dlopen-nodelete-reloc-mod6.cc b/elf/tst-dlopen-nodelete-reloc-mod6.cc
|
|
new file mode 100644
|
|
index 0000000000000000..180f5b5842f1c2b0
|
|
--- /dev/null
|
|
+++ b/elf/tst-dlopen-nodelete-reloc-mod6.cc
|
|
@@ -0,0 +1,42 @@
|
|
+/* First module for NODELETE test defining a unique symbol.
|
|
+ Copyright (C) 2019 Free Software Foundation, Inc.
|
|
+ This file is part of the GNU C Library.
|
|
+
|
|
+ The GNU C Library is free software; you can redistribute it and/or
|
|
+ modify it under the terms of the GNU Lesser General Public
|
|
+ License as published by the Free Software Foundation; either
|
|
+ version 2.1 of the License, or (at your option) any later version.
|
|
+
|
|
+ The GNU C Library is distributed in the hope that it will be useful,
|
|
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
+ Lesser General Public License for more details.
|
|
+
|
|
+ You should have received a copy of the GNU Lesser General Public
|
|
+ License along with the GNU C Library; if not, see
|
|
+ <https://www.gnu.org/licenses/>. */
|
|
+
|
|
+#include "tst-dlopen-nodelete-reloc.h"
|
|
+
|
|
+#include <stdbool.h>
|
|
+#include <stdio.h>
|
|
+#include <unistd.h>
|
|
+
|
|
+/* Just a flag here, not used for NODELETE processing. */
|
|
+bool may_finalize_mod6 = false;
|
|
+
|
|
+/* Explicit instantiation. This produces a unique symbol definition
|
|
+ which is not referenced by the library itself, so the library is
|
|
+ not marked NODELETE. */
|
|
+template struct unique_symbol<6>;
|
|
+
|
|
+static void __attribute__ ((destructor))
|
|
+fini (void)
|
|
+{
|
|
+ if (!may_finalize_mod6)
|
|
+ {
|
|
+ puts ("error: tst-dlopen-nodelete-reloc-mod6.so destructor"
|
|
+ " called too early");
|
|
+ _exit (1);
|
|
+ }
|
|
+}
|
|
diff --git a/elf/tst-dlopen-nodelete-reloc-mod7.cc b/elf/tst-dlopen-nodelete-reloc-mod7.cc
|
|
new file mode 100644
|
|
index 0000000000000000..c85e7c991b098bf5
|
|
--- /dev/null
|
|
+++ b/elf/tst-dlopen-nodelete-reloc-mod7.cc
|
|
@@ -0,0 +1,48 @@
|
|
+/* Second module for NODELETE test defining a unique symbol.
|
|
+ Copyright (C) 2019 Free Software Foundation, Inc.
|
|
+ This file is part of the GNU C Library.
|
|
+
|
|
+ The GNU C Library is free software; you can redistribute it and/or
|
|
+ modify it under the terms of the GNU Lesser General Public
|
|
+ License as published by the Free Software Foundation; either
|
|
+ version 2.1 of the License, or (at your option) any later version.
|
|
+
|
|
+ The GNU C Library is distributed in the hope that it will be useful,
|
|
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
+ Lesser General Public License for more details.
|
|
+
|
|
+ You should have received a copy of the GNU Lesser General Public
|
|
+ License along with the GNU C Library; if not, see
|
|
+ <https://www.gnu.org/licenses/>. */
|
|
+
|
|
+#include "tst-dlopen-nodelete-reloc.h"
|
|
+
|
|
+#include <stdbool.h>
|
|
+#include <stdio.h>
|
|
+#include <unistd.h>
|
|
+
|
|
+/* Just a flag here, not used for NODELETE processing. */
|
|
+bool may_finalize_mod7 = false;
|
|
+
|
|
+extern template struct unique_symbol<6>;
|
|
+
|
|
+/* Trigger the creation of a unique symbol reference. This should
|
|
+ cause tst-dlopen-nodelete-reloc-mod6.so to be marked as
|
|
+ NODELETE. */
|
|
+int
|
|
+global_function_mod7 (void)
|
|
+{
|
|
+ return unique_symbol<6>::value;
|
|
+}
|
|
+
|
|
+static void __attribute__ ((destructor))
|
|
+fini (void)
|
|
+{
|
|
+ if (!may_finalize_mod7)
|
|
+ {
|
|
+ puts ("error: tst-dlopen-nodelete-reloc-mod7.so destructor"
|
|
+ " called too early");
|
|
+ _exit (1);
|
|
+ }
|
|
+}
|
|
diff --git a/elf/tst-dlopen-nodelete-reloc-mod8.c b/elf/tst-dlopen-nodelete-reloc-mod8.c
|
|
new file mode 100644
|
|
index 0000000000000000..ebb1c35fab57e319
|
|
--- /dev/null
|
|
+++ b/elf/tst-dlopen-nodelete-reloc-mod8.c
|
|
@@ -0,0 +1,41 @@
|
|
+/* Helper module to load tst-dlopen-nodelete-reloc-mod9.so.
|
|
+ Copyright (C) 2019 Free Software Foundation, Inc.
|
|
+ This file is part of the GNU C Library.
|
|
+
|
|
+ The GNU C Library is free software; you can redistribute it and/or
|
|
+ modify it under the terms of the GNU Lesser General Public
|
|
+ License as published by the Free Software Foundation; either
|
|
+ version 2.1 of the License, or (at your option) any later version.
|
|
+
|
|
+ The GNU C Library is distributed in the hope that it will be useful,
|
|
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
+ Lesser General Public License for more details.
|
|
+
|
|
+ You should have received a copy of the GNU Lesser General Public
|
|
+ License along with the GNU C Library; if not, see
|
|
+ <https://www.gnu.org/licenses/>. */
|
|
+
|
|
+#include <dlfcn.h>
|
|
+#include <stddef.h>
|
|
+#include <stdio.h>
|
|
+#include <unistd.h>
|
|
+
|
|
+static void *handle;
|
|
+
|
|
+static void __attribute__ ((constructor))
|
|
+init (void)
|
|
+{
|
|
+ handle = dlopen ("tst-dlopen-nodelete-reloc-mod9.so", RTLD_NOW);
|
|
+ if (handle == NULL)
|
|
+ {
|
|
+ printf ("error: dlopen in module 8: %s\n", dlerror ());
|
|
+ _exit (1);
|
|
+ }
|
|
+}
|
|
+
|
|
+static void __attribute__ ((destructor))
|
|
+fini (void)
|
|
+{
|
|
+ dlclose (handle);
|
|
+}
|
|
diff --git a/elf/tst-dlopen-nodelete-reloc-mod9.cc b/elf/tst-dlopen-nodelete-reloc-mod9.cc
|
|
new file mode 100644
|
|
index 0000000000000000..06fb49cdf753cb41
|
|
--- /dev/null
|
|
+++ b/elf/tst-dlopen-nodelete-reloc-mod9.cc
|
|
@@ -0,0 +1,42 @@
|
|
+/* First module defining a unique symbol (loaded indirectly).
|
|
+ Copyright (C) 2019 Free Software Foundation, Inc.
|
|
+ This file is part of the GNU C Library.
|
|
+
|
|
+ The GNU C Library is free software; you can redistribute it and/or
|
|
+ modify it under the terms of the GNU Lesser General Public
|
|
+ License as published by the Free Software Foundation; either
|
|
+ version 2.1 of the License, or (at your option) any later version.
|
|
+
|
|
+ The GNU C Library is distributed in the hope that it will be useful,
|
|
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
+ Lesser General Public License for more details.
|
|
+
|
|
+ You should have received a copy of the GNU Lesser General Public
|
|
+ License along with the GNU C Library; if not, see
|
|
+ <https://www.gnu.org/licenses/>. */
|
|
+
|
|
+#include "tst-dlopen-nodelete-reloc.h"
|
|
+
|
|
+#include <stdbool.h>
|
|
+#include <stdio.h>
|
|
+#include <unistd.h>
|
|
+
|
|
+/* Just a flag here, not used for NODELETE processing. */
|
|
+bool may_finalize_mod9 = false;
|
|
+
|
|
+/* Explicit instantiation. This produces a unique symbol definition
|
|
+ which is not referenced by the library itself, so the library is
|
|
+ not marked NODELETE. */
|
|
+template struct unique_symbol<9>;
|
|
+
|
|
+static void __attribute__ ((destructor))
|
|
+fini (void)
|
|
+{
|
|
+ if (!may_finalize_mod9)
|
|
+ {
|
|
+ puts ("error: tst-dlopen-nodelete-reloc-mod9.so destructor"
|
|
+ " called too early");
|
|
+ _exit (1);
|
|
+ }
|
|
+}
|
|
diff --git a/elf/tst-dlopen-nodelete-reloc.c b/elf/tst-dlopen-nodelete-reloc.c
|
|
new file mode 100644
|
|
index 0000000000000000..291ac9eb8385a92e
|
|
--- /dev/null
|
|
+++ b/elf/tst-dlopen-nodelete-reloc.c
|
|
@@ -0,0 +1,179 @@
|
|
+/* Test interactions of dlopen, NODELETE, and relocations.
|
|
+ Copyright (C) 2019 Free Software Foundation, Inc.
|
|
+ This file is part of the GNU C Library.
|
|
+
|
|
+ The GNU C Library is free software; you can redistribute it and/or
|
|
+ modify it under the terms of the GNU Lesser General Public
|
|
+ License as published by the Free Software Foundation; either
|
|
+ version 2.1 of the License, or (at your option) any later version.
|
|
+
|
|
+ The GNU C Library is distributed in the hope that it will be useful,
|
|
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
+ Lesser General Public License for more details.
|
|
+
|
|
+ You should have received a copy of the GNU Lesser General Public
|
|
+ License along with the GNU C Library; if not, see
|
|
+ <https://www.gnu.org/licenses/>. */
|
|
+
|
|
+/* This test exercises NODELETE propagation due to data relocations
|
|
+ and unique symbols, and the interaction with already-loaded
|
|
+ objects. Some test objects are written in C++, to produce unique
|
|
+ symbol definitions.
|
|
+
|
|
+ First test: Global scope variant, data relocation as the NODELETE
|
|
+ trigger. mod1 is loaded first with a separate dlopen call.
|
|
+
|
|
+ mod2 ---(may_finalize_mod1 relocation dependency)---> mod1
|
|
+ (NODELETE) (marked as NODELETE)
|
|
+
|
|
+ Second test: Local scope variant, data relocation. mod3 is loaded
|
|
+ first, then mod5.
|
|
+
|
|
+ mod5 ---(DT_NEEDED)---> mod4 ---(DT_NEEDED)---> mod3
|
|
+ (NODELETE) (not NODELETE) ^
|
|
+ \ / (marked as
|
|
+ `--(may_finalize_mod3 relocation dependency)--/ NODELETE)
|
|
+
|
|
+ Third test: Shared local scope with unique symbol. mod6 is loaded
|
|
+ first, then mod7. No explicit dependencies between the two
|
|
+ objects, so first object has to be opened with RTLD_GLOBAL.
|
|
+
|
|
+ mod7 ---(unique symbol)---> mod6
|
|
+ (marked as NODELETE)
|
|
+
|
|
+ Forth test: Non-shared scopes with unique symbol. mod8 and mod10
|
|
+ are loaded from the main program. mod8 loads mod9 from an ELF
|
|
+ constructor, mod10 loads mod11. There are no DT_NEEDED
|
|
+ dependencies. mod9 is promoted to the global scope form the main
|
|
+ program. The unique symbol dependency is:
|
|
+
|
|
+ mod9 ---(unique symbol)---> mod11
|
|
+ (marked as NODELETE)
|
|
+
|
|
+ Fifth test: Shared local scope with unique symbol, like test 3, but
|
|
+ this time, there is also a DT_NEEDED dependency (so no RTLD_GLOBAL
|
|
+ needed):
|
|
+
|
|
+ DT_NEEDED
|
|
+ mod13 ---(unique symbol)---> mod12
|
|
+ (marked as NODELETE)
|
|
+
|
|
+ Sixth test: NODELETE status is retained after relocation failure
|
|
+ with unique symbol dependency. The object graph ensures that the
|
|
+ unique symbol binding is processed before the dlopen failure.
|
|
+
|
|
+ DT_NEEDED
|
|
+ mod17 --(DT_NEEDED)--> mod15 --(unique symbol)--> mod14
|
|
+ \ ^ (RTLD_NODELETE)
|
|
+ \ (DT_NEEDED)
|
|
+ \ |
|
|
+ `---(DT_NEEDED)--> mod16
|
|
+ (fails to relocate)
|
|
+
|
|
+ mod14 is loaded first, and the loading mod17 is attempted.
|
|
+ mod14 must remain NODELETE after opening mod17 failed. */
|
|
+
|
|
+#include <stdio.h>
|
|
+#include <string.h>
|
|
+#include <stdbool.h>
|
|
+#include <support/check.h>
|
|
+#include <support/xdlfcn.h>
|
|
+
|
|
+static int
|
|
+do_test (void)
|
|
+{
|
|
+ /* First case: global scope, regular data symbol. Open the object
|
|
+ which is not NODELETE initially. */
|
|
+ void *mod1 = xdlopen ("tst-dlopen-nodelete-reloc-mod1.so",
|
|
+ RTLD_NOW | RTLD_GLOBAL);
|
|
+ /* This is used to indicate that the ELF destructor may be
|
|
+ called. */
|
|
+ bool *may_finalize_mod1 = xdlsym (mod1, "may_finalize_mod1");
|
|
+ /* Open the NODELETE object. */
|
|
+ void *mod2 = xdlopen ("tst-dlopen-nodelete-reloc-mod2.so", RTLD_NOW);
|
|
+ /* This has no effect because the DSO is directly marked as
|
|
+ NODELETE. */
|
|
+ xdlclose (mod2);
|
|
+ /* This has no effect because the DSO has been indirectly marked as
|
|
+ NODELETE due to a relocation dependency. */
|
|
+ xdlclose (mod1);
|
|
+
|
|
+ /* Second case: local scope, regular data symbol. Open the object
|
|
+ which is not NODELETE initially. */
|
|
+ void *mod3 = xdlopen ("tst-dlopen-nodelete-reloc-mod3.so", RTLD_NOW);
|
|
+ bool *may_finalize_mod3 = xdlsym (mod3, "may_finalize_mod3");
|
|
+ /* Open the NODELETE object. */
|
|
+ void *mod5 = xdlopen ("tst-dlopen-nodelete-reloc-mod5.so", RTLD_NOW);
|
|
+ /* Again those have no effect because of NODELETE. */
|
|
+ xdlclose (mod5);
|
|
+ xdlclose (mod3);
|
|
+
|
|
+ /* Third case: Unique symbol. */
|
|
+ void *mod6 = xdlopen ("tst-dlopen-nodelete-reloc-mod6.so",
|
|
+ RTLD_NOW | RTLD_GLOBAL);
|
|
+ bool *may_finalize_mod6 = xdlsym (mod6, "may_finalize_mod6");
|
|
+ void *mod7 = xdlopen ("tst-dlopen-nodelete-reloc-mod7.so", RTLD_NOW);
|
|
+ bool *may_finalize_mod7 = xdlsym (mod7, "may_finalize_mod7");
|
|
+ /* This should not have any effect because of the unique symbol and
|
|
+ the resulting NODELETE status. */
|
|
+ xdlclose (mod6);
|
|
+ /* mod7 is not NODELETE and can be closed. */
|
|
+ *may_finalize_mod7 = true;
|
|
+ xdlclose (mod7);
|
|
+
|
|
+ /* Fourth case: Unique symbol, indirect loading. */
|
|
+ void *mod8 = xdlopen ("tst-dlopen-nodelete-reloc-mod8.so", RTLD_NOW);
|
|
+ /* Also promote to global scope. */
|
|
+ void *mod9 = xdlopen ("tst-dlopen-nodelete-reloc-mod9.so",
|
|
+ RTLD_NOW | RTLD_NOLOAD | RTLD_GLOBAL);
|
|
+ bool *may_finalize_mod9 = xdlsym (mod9, "may_finalize_mod9");
|
|
+ xdlclose (mod9); /* Drop mod9 reference. */
|
|
+ void *mod10 = xdlopen ("tst-dlopen-nodelete-reloc-mod10.so", RTLD_NOW);
|
|
+ void *mod11 = xdlopen ("tst-dlopen-nodelete-reloc-mod11.so",
|
|
+ RTLD_NOW | RTLD_NOLOAD);
|
|
+ bool *may_finalize_mod11 = xdlsym (mod11, "may_finalize_mod11");
|
|
+ xdlclose (mod11); /* Drop mod11 reference. */
|
|
+ /* mod11 is not NODELETE and can be closed. */
|
|
+ *may_finalize_mod11 = true;
|
|
+ /* Trigger closing of mod11, too. */
|
|
+ xdlclose (mod10);
|
|
+ /* Does not trigger closing of mod9. */
|
|
+ xdlclose (mod8);
|
|
+
|
|
+ /* Fifth case: Unique symbol, with DT_NEEDED dependency. */
|
|
+ void *mod12 = xdlopen ("tst-dlopen-nodelete-reloc-mod12.so", RTLD_NOW);
|
|
+ bool *may_finalize_mod12 = xdlsym (mod12, "may_finalize_mod12");
|
|
+ void *mod13 = xdlopen ("tst-dlopen-nodelete-reloc-mod13.so", RTLD_NOW);
|
|
+ bool *may_finalize_mod13 = xdlsym (mod13, "may_finalize_mod13");
|
|
+ /* This should not have any effect because of the unique symbol. */
|
|
+ xdlclose (mod12);
|
|
+ /* mod13 is not NODELETE and can be closed. */
|
|
+ *may_finalize_mod13 = true;
|
|
+ xdlclose (mod13);
|
|
+
|
|
+ /* Sixth case: Unique symbol binding must not cause loss of NODELETE
|
|
+ status. */
|
|
+ void *mod14 = xdlopen ("tst-dlopen-nodelete-reloc-mod14.so",
|
|
+ RTLD_NOW | RTLD_NODELETE);
|
|
+ bool *may_finalize_mod14 = xdlsym (mod14, "may_finalize_mod14");
|
|
+ TEST_VERIFY (dlopen ("tst-dlopen-nodelete-reloc-mod17.so", RTLD_NOW)
|
|
+ == NULL);
|
|
+ const char *message = dlerror ();
|
|
+ printf ("info: test 6 message: %s\n", message);
|
|
+ /* This must not close the object, it must still be NODELETE. */
|
|
+ xdlclose (mod14);
|
|
+ xdlopen ("tst-dlopen-nodelete-reloc-mod14.so", RTLD_NOW | RTLD_NOLOAD);
|
|
+
|
|
+ /* Prepare for process exit. Destructors for NODELETE objects will
|
|
+ be invoked. */
|
|
+ *may_finalize_mod1 = true;
|
|
+ *may_finalize_mod3 = true;
|
|
+ *may_finalize_mod6 = true;
|
|
+ *may_finalize_mod9 = true;
|
|
+ *may_finalize_mod12 = true;
|
|
+ *may_finalize_mod14 = true;
|
|
+ return 0;
|
|
+}
|
|
+
|
|
+#include <support/test-driver.c>
|
|
diff --git a/elf/tst-dlopen-nodelete-reloc.h b/elf/tst-dlopen-nodelete-reloc.h
|
|
new file mode 100644
|
|
index 0000000000000000..8844de622631f575
|
|
--- /dev/null
|
|
+++ b/elf/tst-dlopen-nodelete-reloc.h
|
|
@@ -0,0 +1,35 @@
|
|
+/* Template to produce unique symbols.
|
|
+ Copyright (C) 2019 Free Software Foundation, Inc.
|
|
+ This file is part of the GNU C Library.
|
|
+
|
|
+ The GNU C Library is free software; you can redistribute it and/or
|
|
+ modify it under the terms of the GNU Lesser General Public
|
|
+ License as published by the Free Software Foundation; either
|
|
+ version 2.1 of the License, or (at your option) any later version.
|
|
+
|
|
+ The GNU C Library is distributed in the hope that it will be useful,
|
|
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
+ Lesser General Public License for more details.
|
|
+
|
|
+ You should have received a copy of the GNU Lesser General Public
|
|
+ License along with the GNU C Library; if not, see
|
|
+ <https://www.gnu.org/licenses/>. */
|
|
+
|
|
+/* This template produces a unique symbol definition for an explicit
|
|
+ template instantiation (without also incorporating a reference),
|
|
+ and an extern template declaration can be used to reference that
|
|
+ symbol from another object. The modid parameter is just a
|
|
+ placeholder to create different symbols (because it affects the
|
|
+ name mangling of the static value member). By convention, it
|
|
+ should match the number of the module that contains the
|
|
+ definition. */
|
|
+
|
|
+template <int modid>
|
|
+struct unique_symbol
|
|
+{
|
|
+ static int value;
|
|
+};
|
|
+
|
|
+template <int modid>
|
|
+int unique_symbol<modid>::value;
|