glibc/SOURCES/glibc-rh2047981-7.patch

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2022-11-08 06:58:46 +00:00
Added $(objpfx)tst-dlmopen-gethostbyname: $(libdl) in elf/Makefile since
we still have $(libdl) in RHEL8.
commit c2059edce20c124d1a99f1a94cc52e83b77a917a
Author: Florian Weimer <fweimer@redhat.com>
Date: Thu Jun 17 15:06:43 2021 +0200
elf: Use _dl_catch_error from base namespace in dl-libc.c [BZ #27646]
dlerrror_run in elf/dl-libc.c needs to call GLRO (dl_catch_error)
from the base namespace, just like the exported dlerror
implementation.
Fixes commit b2964eb1d9a6b8ab1250e8a881cf406182da5875 ("dlfcn:
Failures after dlmopen should not terminate process [BZ #24772]").
Reviewed-by: Siddhesh Poyarekar <siddhesh@sourceware.org>
Conflicts:
elf/Makefile
diff --git a/elf/Makefile b/elf/Makefile
index e0919486a14cab1a..30417c3ce15abcb4 100644
--- a/elf/Makefile
+++ b/elf/Makefile
@@ -217,6 +217,7 @@ tests += restest1 preloadtest loadfail multiload origtest resolvfail \
tst-tls20 tst-tls21 \
tst-rtld-run-static \
tst-dlmopen-dlerror \
+ tst-dlmopen-gethostbyname \
# reldep9
tests-internal += loadtest unload unload2 circleload1 \
neededtest neededtest2 neededtest3 neededtest4 \
@@ -351,6 +352,7 @@ modules-names = testobj1 testobj2 testobj3 testobj4 testobj5 testobj6 \
libmarkermod5-1 libmarkermod5-2 libmarkermod5-3 libmarkermod5-4 \
libmarkermod5-5 tst-tls20mod-bad tst-tls21mod \
tst-dlmopen-dlerror-mod \
+ tst-dlmopen-gethostbyname-mod \
# Most modules build with _ISOMAC defined, but those filtered out
# depend on internal headers.
@@ -1935,3 +1937,5 @@ $(objpfx)tst-tls21.out: $(objpfx)tst-tls21mod.so
$(objpfx)tst-tls21mod.so: $(tst-tls-many-dynamic-modules:%=$(objpfx)%.so)
$(objpfx)tst-rtld-run-static.out: $(objpfx)/ldconfig
+$(objpfx)tst-dlmopen-gethostbyname: $(libdl)
+$(objpfx)tst-dlmopen-gethostbyname.out: $(objpfx)tst-dlmopen-gethostbyname-mod.so
diff --git a/elf/dl-libc.c b/elf/dl-libc.c
index fc01f5514d4f656c..3a242d219756dac6 100644
--- a/elf/dl-libc.c
+++ b/elf/dl-libc.c
@@ -43,8 +43,8 @@ dlerror_run (void (*operate) (void *), void *args)
const char *last_errstring = NULL;
bool malloced;
- int result = (_dl_catch_error (&objname, &last_errstring, &malloced,
- operate, args)
+ int result = (GLRO (dl_catch_error) (&objname, &last_errstring, &malloced,
+ operate, args)
?: last_errstring != NULL);
if (result && malloced)
diff --git a/elf/tst-dlmopen-gethostbyname-mod.c b/elf/tst-dlmopen-gethostbyname-mod.c
new file mode 100644
index 0000000000000000..9a68ea5050c3060b
--- /dev/null
+++ b/elf/tst-dlmopen-gethostbyname-mod.c
@@ -0,0 +1,29 @@
+/* Exercise dlerror_run in elf/dl-libc.c after dlmopen, via NSS. Helper module.
+ 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 <netdb.h>
+#include <nss.h>
+
+void
+call_gethostbyname (void)
+{
+ __nss_configure_lookup ("hosts", "files");
+ /* This should not terminate the process due to a missing
+ _nss_files_getcanonname_r symbol. */
+ gethostbyname ("localhost");
+}
diff --git a/elf/tst-dlmopen-gethostbyname.c b/elf/tst-dlmopen-gethostbyname.c
new file mode 100644
index 0000000000000000..12deb29900731c20
--- /dev/null
+++ b/elf/tst-dlmopen-gethostbyname.c
@@ -0,0 +1,31 @@
+/* Exercise dlerror_run in elf/dl-libc.c after dlmopen, via NSS (bug 27646).
+ 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 <support/xdlfcn.h>
+
+static int
+do_test (void)
+{
+ void *handle = xdlmopen (LM_ID_NEWLM, "tst-dlmopen-gethostbyname-mod.so",
+ RTLD_NOW);
+ void (*call_gethostbyname) (void) = xdlsym (handle, "call_gethostbyname");
+ call_gethostbyname ();
+ return 0;
+}
+
+#include <support/test-driver.c>