161 lines
5.3 KiB
Diff
161 lines
5.3 KiB
Diff
commit aee6e90f93e285016b6cd9c8bd00402c19ba271b
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Author: Adhemerval Zanella <adhemerval.zanella@linaro.org>
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Date: Mon Jul 19 15:47:51 2021 -0300
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elf: Add _dl_audit_objopen
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It consolidates the code required to call la_objopen audit 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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Conflicts:
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elf/Makefile
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diff --git a/elf/Makefile b/elf/Makefile
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index 2312184692433313..08a32a712a34f2cc 100644
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--- a/elf/Makefile
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+++ b/elf/Makefile
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@@ -64,7 +64,8 @@ elide-routines.os = $(all-dl-routines) dl-support enbl-secure dl-origin \
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# interpreter and operating independent of libc.
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rtld-routines = rtld $(all-dl-routines) dl-sysdep dl-environ dl-minimal \
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dl-error-minimal dl-conflict dl-hwcaps dl-hwcaps_split dl-hwcaps-subdirs \
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- dl-usage dl-diagnostics dl-diagnostics-kernel dl-diagnostics-cpu
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+ dl-usage dl-diagnostics dl-diagnostics-kernel dl-diagnostics-cpu \
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+ dl-audit
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all-rtld-routines = $(rtld-routines) $(sysdep-rtld-routines)
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CFLAGS-dl-runtime.c += -fexceptions -fasynchronous-unwind-tables
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diff --git a/elf/dl-audit.c b/elf/dl-audit.c
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new file mode 100644
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index 0000000000000000..4066dfe85146b9d4
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--- /dev/null
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+++ b/elf/dl-audit.c
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@@ -0,0 +1,39 @@
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+/* Audit common functions.
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+ Copyright (C) 2021 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 <ldsodefs.h>
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+
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+void
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+_dl_audit_objopen (struct link_map *l, Lmid_t nsid)
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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->objopen != NULL)
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+ {
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+ struct auditstate *state = link_map_audit_state (l, cnt);
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+ state->bindflags = afct->objopen (l, nsid, &state->cookie);
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+ l->l_audit_any_plt |= state->bindflags != 0;
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+ }
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+
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+ afct = afct->next;
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+ }
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+}
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diff --git a/elf/dl-load.c b/elf/dl-load.c
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index de5aef5777045da5..c11b1d1781e9b40b 100644
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--- a/elf/dl-load.c
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+++ b/elf/dl-load.c
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@@ -1436,22 +1436,8 @@ cannot enable executable stack as shared object requires");
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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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- && !GL(dl_ns)[l->l_ns]._ns_loaded->l_auditing)
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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->objopen != NULL)
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- {
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- struct auditstate *state = link_map_audit_state (l, cnt);
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- state->bindflags = afct->objopen (l, nsid, &state->cookie);
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- l->l_audit_any_plt |= state->bindflags != 0;
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- }
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-
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- afct = afct->next;
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- }
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- }
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+ if (!GL(dl_ns)[l->l_ns]._ns_loaded->l_auditing)
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+ _dl_audit_objopen (l, nsid);
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#endif
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return l;
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diff --git a/elf/rtld.c b/elf/rtld.c
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index f3836b8a78faaf27..1982e42390760e0a 100644
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--- a/elf/rtld.c
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+++ b/elf/rtld.c
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@@ -1075,25 +1075,6 @@ ERROR: audit interface '%s' requires version %d (maximum supported version %d);
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dlmargs.map->l_auditing = 1;
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}
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-/* Notify the the audit modules that the object MAP has already been
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- loaded. */
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-static void
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-notify_audit_modules_of_loaded_object (struct link_map *map)
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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->objopen != NULL)
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- {
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- struct auditstate *state = link_map_audit_state (map, cnt);
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- state->bindflags = afct->objopen (map, LM_ID_BASE, &state->cookie);
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- map->l_audit_any_plt |= state->bindflags != 0;
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- }
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-
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- afct = afct->next;
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- }
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-}
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-
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/* Load all audit modules. */
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static void
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load_audit_modules (struct link_map *main_map, struct audit_list *audit_list)
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@@ -1112,8 +1093,8 @@ load_audit_modules (struct link_map *main_map, struct audit_list *audit_list)
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program and the dynamic linker itself). */
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if (GLRO(dl_naudit) > 0)
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{
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- notify_audit_modules_of_loaded_object (main_map);
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- notify_audit_modules_of_loaded_object (&GL(dl_rtld_map));
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+ _dl_audit_objopen (main_map, LM_ID_BASE);
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+ _dl_audit_objopen (&GL(dl_rtld_map), LM_ID_BASE);
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}
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}
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diff --git a/sysdeps/generic/ldsodefs.h b/sysdeps/generic/ldsodefs.h
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index 2dd6f0c3c4aaaef5..410f070e28b74bdf 100644
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--- a/sysdeps/generic/ldsodefs.h
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+++ b/sysdeps/generic/ldsodefs.h
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@@ -1268,6 +1268,11 @@ link_map_audit_state (struct link_map *l, size_t index)
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{
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return &l->l_audit[index];
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}
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+
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+/* Call the la_objopen from the audit modules for the link_map L on the
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+ namespace identification NSID. */
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+void _dl_audit_objopen (struct link_map *l, Lmid_t nsid)
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+ attribute_hidden;
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#endif /* SHARED */
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__END_DECLS
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