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commit 31473c273be14270f8eef68e35c03fd2305eb2c3
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Author: Adhemerval Zanella <adhemerval.zanella@linaro.org>
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Date: Thu Jul 22 17:10:57 2021 -0300
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elf: Add _dl_audit_preinit
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It consolidates the code required to call la_preinit audit
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callback.
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Checked on x86_64-linux-gnu, i686-linux-gnu, and aarch64-linux-gnu.
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Reviewed-by: Florian Weimer <fweimer@redhat.com>
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(cherry picked from commit 0b98a8748759e88b58927882a8714109abe0a2d6)
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diff --git a/csu/libc-start.c b/csu/libc-start.c
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index 0350b006fdcc22d2..d01e57ea59ceb880 100644
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--- a/csu/libc-start.c
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+++ b/csu/libc-start.c
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@@ -377,32 +377,15 @@ LIBC_START_MAIN (int (*main) (int, char **, char ** MAIN_AUXVEC_DECL),
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/* This is a current program. Use the dynamic segment to find
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constructors. */
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call_init (argc, argv, __environ);
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-#else /* !SHARED */
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- call_init (argc, argv, __environ);
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-#endif /* SHARED */
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-#ifdef SHARED
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/* Auditing checkpoint: we have a new object. */
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- if (__glibc_unlikely (GLRO(dl_naudit) > 0))
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- {
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- struct audit_ifaces *afct = GLRO(dl_audit);
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- struct link_map *head = GL(dl_ns)[LM_ID_BASE]._ns_loaded;
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- for (unsigned int cnt = 0; cnt < GLRO(dl_naudit); ++cnt)
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- {
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- if (afct->preinit != NULL)
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- afct->preinit (&link_map_audit_state (head, cnt)->cookie);
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-
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- afct = afct->next;
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- }
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- }
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-#endif
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+ _dl_audit_preinit (GL(dl_ns)[LM_ID_BASE]._ns_loaded);
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-#ifdef SHARED
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if (__glibc_unlikely (GLRO(dl_debug_mask) & DL_DEBUG_IMPCALLS))
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GLRO(dl_debug_printf) ("\ntransferring control: %s\n\n", argv[0]);
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-#endif
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+#else /* !SHARED */
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+ call_init (argc, argv, __environ);
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-#ifndef SHARED
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_dl_debug_initialize (0, LM_ID_BASE);
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#endif
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diff --git a/elf/Versions b/elf/Versions
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index 164682eaeaa9a1da..bb6697647b397772 100644
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--- a/elf/Versions
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+++ b/elf/Versions
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@@ -58,7 +58,7 @@ ld {
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_dl_argv; _dl_find_dso_for_object; _dl_get_tls_static_info;
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_dl_deallocate_tls; _dl_make_stack_executable;
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_dl_rtld_di_serinfo; _dl_starting_up; _dl_fatal_printf;
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- _dl_audit_symbind_alt;
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+ _dl_audit_symbind_alt; _dl_audit_preinit;
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_rtld_global; _rtld_global_ro;
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# Only here for gdb while a better method is developed.
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diff --git a/elf/dl-audit.c b/elf/dl-audit.c
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index a21530f30bc5524b..0b6fac8e48877c93 100644
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--- a/elf/dl-audit.c
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+++ b/elf/dl-audit.c
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@@ -108,6 +108,21 @@ _dl_audit_objclose (struct link_map *l)
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}
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}
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+void
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+_dl_audit_preinit (struct link_map *l)
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+{
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+ if (__glibc_likely (GLRO(dl_naudit) == 0))
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+ return;
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+
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+ struct audit_ifaces *afct = GLRO(dl_audit);
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+ for (unsigned int cnt = 0; cnt < GLRO(dl_naudit); ++cnt)
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+ {
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+ if (afct->preinit != NULL)
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+ afct->preinit (&link_map_audit_state (l, cnt)->cookie);
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+ afct = afct->next;
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+ }
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+}
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+
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void
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_dl_audit_symbind_alt (struct link_map *l, const ElfW(Sym) *ref, void **value,
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lookup_t result)
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diff --git a/sysdeps/generic/ldsodefs.h b/sysdeps/generic/ldsodefs.h
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index 61f1dfb3f79a613a..91193a036fc5c6ef 100644
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--- a/sysdeps/generic/ldsodefs.h
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+++ b/sysdeps/generic/ldsodefs.h
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@@ -1399,6 +1399,9 @@ void _dl_audit_objopen (struct link_map *l, Lmid_t nsid)
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void _dl_audit_objclose (struct link_map *l)
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attribute_hidden;
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+/* Call the la_preinit from the audit modules for the link_map L. */
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+void _dl_audit_preinit (struct link_map *l);
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+
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/* Call the la_symbind{32,64} from the audit modules for the link_map L. */
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void _dl_audit_symbind (struct link_map *l, struct reloc_result *reloc_result,
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const ElfW(Sym) *defsym, DL_FIXUP_VALUE_TYPE *value,
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