glibc/SOURCES/glibc-rh2047981-15.patch

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2022-11-08 06:58:46 +00:00
commit aee6e90f93e285016b6cd9c8bd00402c19ba271b
Author: Adhemerval Zanella <adhemerval.zanella@linaro.org>
Date: Mon Jul 19 15:47:51 2021 -0300
elf: Add _dl_audit_objopen
It consolidates the code required to call la_objopen audit callback.
Checked on x86_64-linux-gnu, i686-linux-gnu, and aarch64-linux-gnu.
Reviewed-by: Florian Weimer <fweimer@redhat.com>
Conflicts:
elf/Makefile
diff --git a/elf/Makefile b/elf/Makefile
index 2312184692433313..08a32a712a34f2cc 100644
--- a/elf/Makefile
+++ b/elf/Makefile
@@ -64,7 +64,8 @@ elide-routines.os = $(all-dl-routines) dl-support enbl-secure dl-origin \
# interpreter and operating independent of libc.
rtld-routines = rtld $(all-dl-routines) dl-sysdep dl-environ dl-minimal \
dl-error-minimal dl-conflict dl-hwcaps dl-hwcaps_split dl-hwcaps-subdirs \
- dl-usage dl-diagnostics dl-diagnostics-kernel dl-diagnostics-cpu
+ dl-usage dl-diagnostics dl-diagnostics-kernel dl-diagnostics-cpu \
+ dl-audit
all-rtld-routines = $(rtld-routines) $(sysdep-rtld-routines)
CFLAGS-dl-runtime.c += -fexceptions -fasynchronous-unwind-tables
diff --git a/elf/dl-audit.c b/elf/dl-audit.c
new file mode 100644
index 0000000000000000..4066dfe85146b9d4
--- /dev/null
+++ b/elf/dl-audit.c
@@ -0,0 +1,39 @@
+/* Audit common functions.
+ Copyright (C) 2021 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 <ldsodefs.h>
+
+void
+_dl_audit_objopen (struct link_map *l, Lmid_t nsid)
+{
+ if (__glibc_likely (GLRO(dl_naudit) == 0))
+ return;
+
+ struct audit_ifaces *afct = GLRO(dl_audit);
+ for (unsigned int cnt = 0; cnt < GLRO(dl_naudit); ++cnt)
+ {
+ if (afct->objopen != NULL)
+ {
+ struct auditstate *state = link_map_audit_state (l, cnt);
+ state->bindflags = afct->objopen (l, nsid, &state->cookie);
+ l->l_audit_any_plt |= state->bindflags != 0;
+ }
+
+ afct = afct->next;
+ }
+}
diff --git a/elf/dl-load.c b/elf/dl-load.c
index de5aef5777045da5..c11b1d1781e9b40b 100644
--- a/elf/dl-load.c
+++ b/elf/dl-load.c
@@ -1436,22 +1436,8 @@ cannot enable executable stack as shared object requires");
#ifdef SHARED
/* Auditing checkpoint: we have a new object. */
- if (__glibc_unlikely (GLRO(dl_naudit) > 0)
- && !GL(dl_ns)[l->l_ns]._ns_loaded->l_auditing)
- {
- struct audit_ifaces *afct = GLRO(dl_audit);
- for (unsigned int cnt = 0; cnt < GLRO(dl_naudit); ++cnt)
- {
- if (afct->objopen != NULL)
- {
- struct auditstate *state = link_map_audit_state (l, cnt);
- state->bindflags = afct->objopen (l, nsid, &state->cookie);
- l->l_audit_any_plt |= state->bindflags != 0;
- }
-
- afct = afct->next;
- }
- }
+ if (!GL(dl_ns)[l->l_ns]._ns_loaded->l_auditing)
+ _dl_audit_objopen (l, nsid);
#endif
return l;
diff --git a/elf/rtld.c b/elf/rtld.c
index f3836b8a78faaf27..1982e42390760e0a 100644
--- a/elf/rtld.c
+++ b/elf/rtld.c
@@ -1075,25 +1075,6 @@ ERROR: audit interface '%s' requires version %d (maximum supported version %d);
dlmargs.map->l_auditing = 1;
}
-/* Notify the the audit modules that the object MAP has already been
- loaded. */
-static void
-notify_audit_modules_of_loaded_object (struct link_map *map)
-{
- struct audit_ifaces *afct = GLRO(dl_audit);
- for (unsigned int cnt = 0; cnt < GLRO(dl_naudit); ++cnt)
- {
- if (afct->objopen != NULL)
- {
- struct auditstate *state = link_map_audit_state (map, cnt);
- state->bindflags = afct->objopen (map, LM_ID_BASE, &state->cookie);
- map->l_audit_any_plt |= state->bindflags != 0;
- }
-
- afct = afct->next;
- }
-}
-
/* Load all audit modules. */
static void
load_audit_modules (struct link_map *main_map, struct audit_list *audit_list)
@@ -1112,8 +1093,8 @@ load_audit_modules (struct link_map *main_map, struct audit_list *audit_list)
program and the dynamic linker itself). */
if (GLRO(dl_naudit) > 0)
{
- notify_audit_modules_of_loaded_object (main_map);
- notify_audit_modules_of_loaded_object (&GL(dl_rtld_map));
+ _dl_audit_objopen (main_map, LM_ID_BASE);
+ _dl_audit_objopen (&GL(dl_rtld_map), LM_ID_BASE);
}
}
diff --git a/sysdeps/generic/ldsodefs.h b/sysdeps/generic/ldsodefs.h
index 2dd6f0c3c4aaaef5..410f070e28b74bdf 100644
--- a/sysdeps/generic/ldsodefs.h
+++ b/sysdeps/generic/ldsodefs.h
@@ -1268,6 +1268,11 @@ link_map_audit_state (struct link_map *l, size_t index)
{
return &l->l_audit[index];
}
+
+/* Call the la_objopen from the audit modules for the link_map L on the
+ namespace identification NSID. */
+void _dl_audit_objopen (struct link_map *l, Lmid_t nsid)
+ attribute_hidden;
#endif /* SHARED */
__END_DECLS