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base/SOURCES/glibc-rh1211100.patch

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commit a1b85ae88b1a664e93ca0182c82f7763dd5a1754
Author: Florian Weimer <fweimer@redhat.com>
Date: Mon Nov 9 16:52:31 2015 +0100
ld.so: Add original DSO name if overridden by audit module [BZ #18251]
Index: b/elf/Makefile
===================================================================
--- a/elf/Makefile
+++ b/elf/Makefile
@@ -119,7 +119,8 @@ $(inst_auditdir)/sotruss-lib.so: $(objpf
endif
tests = tst-tls1 tst-tls2 tst-tls9 tst-leaks1 \
- tst-array1 tst-array2 tst-array3 tst-array4 tst-array5
+ tst-array1 tst-array2 tst-array3 tst-array4 tst-array5 \
+ tst-audit11 tst-audit12
tests-static = tst-tls1-static tst-tls2-static tst-stackguard1-static \
tst-leaks1-static tst-array1-static tst-array5-static \
tst-ptrguard1-static
@@ -216,7 +217,9 @@ modules-names = testobj1 testobj2 testob
tst-initorder2a tst-initorder2b tst-initorder2c \
tst-initorder2d \
tst-relsort1mod1 tst-relsort1mod2 tst-array2dep \
- tst-array5dep
+ tst-array5dep \
+ tst-audit11mod1 tst-audit11mod2 tst-auditmod11 \
+ tst-audit12mod1 tst-audit12mod2 tst-audit12mod3 tst-auditmod12
ifeq (yesyes,$(have-fpie)$(build-shared))
modules-names += tst-piemod1
tests += tst-pie1
@@ -1210,3 +1213,15 @@ $(objpfx)tst-unused-dep.out: $(objpfx)te
--library-path $(rpath-link)$(patsubst %,:%,$(sysdep-library-path)) \
$< > $@
cmp $@ /dev/null > /dev/null
+
+$(objpfx)tst-audit11.out: $(objpfx)tst-auditmod11.so $(objpfx)tst-audit11mod1.so
+$(objpfx)tst-audit11: $(libdl)
+tst-audit11-ENV = LD_AUDIT=$(objpfx)tst-auditmod11.so
+$(objpfx)tst-audit11mod1.so: $(objpfx)tst-audit11mod2.so
+LDFLAGS-tst-audit11mod2.so = -Wl,--version-script=tst-audit11mod2.map,-soname,tst-audit11mod2.so
+
+$(objpfx)tst-audit12.out: $(objpfx)tst-auditmod12.so $(objpfx)tst-audit12mod1.so $(objpfx)tst-audit12mod3.so
+$(objpfx)tst-audit12: $(libdl)
+tst-audit12-ENV = LD_AUDIT=$(objpfx)tst-auditmod12.so
+$(objpfx)tst-audit12mod1.so: $(objpfx)tst-audit12mod2.so
+LDFLAGS-tst-audit12mod2.so = -Wl,--version-script=tst-audit12mod2.map
Index: b/elf/dl-load.c
===================================================================
--- a/elf/dl-load.c
+++ b/elf/dl-load.c
@@ -909,9 +909,10 @@ lose (int code, int fd, const char *name
static
#endif
struct link_map *
-_dl_map_object_from_fd (const char *name, int fd, struct filebuf *fbp,
- char *realname, struct link_map *loader, int l_type,
- int mode, void **stack_endp, Lmid_t nsid)
+_dl_map_object_from_fd (const char *name, const char *origname, int fd,
+ struct filebuf *fbp, char *realname,
+ struct link_map *loader, int l_type, int mode,
+ void **stack_endp, Lmid_t nsid)
{
struct link_map *l = NULL;
const ElfW(Ehdr) *header;
@@ -1582,6 +1583,17 @@ cannot enable executable stack as shared
l->l_dev = st.st_dev;
l->l_ino = st.st_ino;
+#ifdef SHARED
+ /* When auditing is used the recorded names might not include the
+ name by which the DSO is actually known. Add that as well. */
+ if (__glibc_unlikely (origname != NULL))
+ add_name_to_object (l, origname);
+#else
+ /* Audit modules only exist when linking is dynamic so ORIGNAME
+ cannot be non-NULL. */
+ assert (origname == NULL);
+#endif
+
/* When we profile the SONAME might be needed for something else but
loading. Add it right away. */
if (__builtin_expect (GLRO(dl_profile) != NULL, 0)
@@ -2081,6 +2093,7 @@ _dl_map_object (struct link_map *loader,
int type, int trace_mode, int mode, Lmid_t nsid)
{
int fd;
+ const char *origname = NULL;
char *realname;
char *name_copy;
struct link_map *l;
@@ -2144,6 +2157,7 @@ _dl_map_object (struct link_map *loader,
{
if (afct->objsearch != NULL)
{
+ const char *before = name;
name = afct->objsearch (name, &loader->l_audit[cnt].cookie,
LA_SER_ORIG);
if (name == NULL)
@@ -2152,6 +2166,15 @@ _dl_map_object (struct link_map *loader,
fd = -1;
goto no_file;
}
+ if (before != name && strcmp (before, name) != 0)
+ {
+ if (__glibc_unlikely (GLRO(dl_debug_mask) & DL_DEBUG_FILES))
+ _dl_debug_printf ("audit changed filename %s -> %s\n",
+ before, name);
+
+ if (origname == NULL)
+ origname = before;
+ }
}
afct = afct->next;
@@ -2371,8 +2394,8 @@ _dl_map_object (struct link_map *loader,
}
void *stack_end = __libc_stack_end;
- return _dl_map_object_from_fd (name, fd, &fb, realname, loader, type, mode,
- &stack_end, nsid);
+ return _dl_map_object_from_fd (name, origname, fd, &fb, realname, loader,
+ type, mode, &stack_end, nsid);
}
Index: b/elf/tst-audit11.c
===================================================================
--- /dev/null
+++ b/elf/tst-audit11.c
@@ -0,0 +1,36 @@
+/* Test version symbol binding can find a DSO replaced by la_objsearch.
+ Copyright (C) 2015 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
+ <http://www.gnu.org/licenses/>. */
+
+#include <dlfcn.h>
+#include <stdio.h>
+
+int
+do_test (void)
+{
+ puts ("Start");
+ if (dlopen ("$ORIGIN/tst-audit11mod1.so", RTLD_LAZY) == NULL)
+ {
+ printf ("module not loaded: %s\n", dlerror ());
+ return 1;
+ }
+ puts ("OK");
+ return 0;
+}
+
+#define TEST_FUNCTION do_test ()
+#include "../test-skeleton.c"
Index: b/elf/tst-audit11mod1.c
===================================================================
--- /dev/null
+++ b/elf/tst-audit11mod1.c
@@ -0,0 +1,24 @@
+/* DSO directly opened by tst-audit11.
+ Copyright (C) 2015 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
+ <http://www.gnu.org/licenses/>. */
+
+extern int f2 (void);
+int
+f1 (void)
+{
+ return f2 ();
+}
Index: b/elf/tst-audit11mod2.c
===================================================================
--- /dev/null
+++ b/elf/tst-audit11mod2.c
@@ -0,0 +1,23 @@
+/* DSO indirectly opened by tst-audit11, with symbol versioning.
+ Copyright (C) 2015 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
+ <http://www.gnu.org/licenses/>. */
+
+int
+f2 (void)
+{
+ return 42;
+}
Index: b/elf/tst-audit11mod2.map
===================================================================
--- /dev/null
+++ b/elf/tst-audit11mod2.map
@@ -0,0 +1,22 @@
+/* Symbol versioning for the DSO indirectly opened by tst-audit11.
+ Copyright (C) 2015 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
+ <http://www.gnu.org/licenses/>. */
+
+V1 {
+ global: f2;
+ local: *;
+};
Index: b/elf/tst-audit12.c
===================================================================
--- /dev/null
+++ b/elf/tst-audit12.c
@@ -0,0 +1,49 @@
+/* Test that symbol is bound to a DSO replaced by la_objsearch.
+ Copyright (C) 2015 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
+ <http://www.gnu.org/licenses/>. */
+
+#include <dlfcn.h>
+#include <stdio.h>
+
+int
+do_test (void)
+{
+ puts ("Start");
+ void *h = dlopen ("$ORIGIN/tst-audit12mod1.so", RTLD_LAZY);
+ if (h == NULL)
+ {
+ printf ("module not loaded: %s\n", dlerror ());
+ return 1;
+ }
+ int (*fp) (void) = (int (*) (void)) dlsym (h, "f1");
+ if (fp == NULL)
+ {
+ printf ("function f1 not found: %s\n", dlerror ());
+ return 1;
+ }
+ int res = fp ();
+ if (res != 43)
+ {
+ puts ("incorrect function f2 called");
+ return 1;
+ }
+ printf ("%d is OK\n", res);
+ return 0;
+}
+
+#define TEST_FUNCTION do_test ()
+#include "../test-skeleton.c"
Index: b/elf/tst-audit12mod1.c
===================================================================
--- /dev/null
+++ b/elf/tst-audit12mod1.c
@@ -0,0 +1,24 @@
+/* DSO directly opened by tst-audit12.
+ Copyright (C) 2015 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
+ <http://www.gnu.org/licenses/>. */
+
+extern int f2 (void);
+int
+f1 (void)
+{
+ return f2 ();
+}
Index: b/elf/tst-audit12mod2.c
===================================================================
--- /dev/null
+++ b/elf/tst-audit12mod2.c
@@ -0,0 +1,23 @@
+/* Replaced DSO referenced by tst-audit12mod1.so, for tst-audit12.
+ Copyright (C) 2015 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
+ <http://www.gnu.org/licenses/>. */
+
+int
+f2 (void)
+{
+ return 42;
+}
Index: b/elf/tst-audit12mod2.map
===================================================================
--- /dev/null
+++ b/elf/tst-audit12mod2.map
@@ -0,0 +1,22 @@
+/* Symbol versioning for tst-audit12mod2.so used by tst-audit12.
+ Copyright (C) 2015 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
+ <http://www.gnu.org/licenses/>. */
+
+V1 {
+ global: f2;
+ local: *;
+};
Index: b/elf/tst-audit12mod3.c
===================================================================
--- /dev/null
+++ b/elf/tst-audit12mod3.c
@@ -0,0 +1,23 @@
+/* Replacement DSO loaded by the audit module, for tst-audit12.
+ Copyright (C) 2015 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
+ <http://www.gnu.org/licenses/>. */
+
+int
+f2 (void)
+{
+ return 43;
+}
Index: b/elf/tst-auditmod11.c
===================================================================
--- /dev/null
+++ b/elf/tst-auditmod11.c
@@ -0,0 +1,39 @@
+/* Audit module for tst-audit11.
+ Copyright (C) 2015 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
+ <http://www.gnu.org/licenses/>. */
+
+#include <link.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+
+unsigned int
+la_version (unsigned int version)
+{
+ return version;
+}
+
+char *
+la_objsearch (const char *name, uintptr_t *cookie, unsigned int flag)
+{
+ if (strcmp (name, "tst-audit11mod2.so") == 0)
+ {
+ return (char *) "$ORIGIN/tst-audit11mod2.so";
+ }
+ return (char *) name;
+}
Index: b/elf/tst-auditmod12.c
===================================================================
--- /dev/null
+++ b/elf/tst-auditmod12.c
@@ -0,0 +1,43 @@
+/* Audit module for tst-audit12.
+ Copyright (C) 2015 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
+ <http://www.gnu.org/licenses/>. */
+
+#include <link.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+
+unsigned int
+la_version (unsigned int version)
+{
+ return version;
+}
+
+char *
+la_objsearch (const char *name, uintptr_t *cookie, unsigned int flag)
+{
+ const char target[] = "tst-audit12mod2.so";
+
+ size_t namelen = strlen (name);
+ if (namelen >= sizeof (target) - 1
+ && strcmp (name + namelen - (sizeof (target) - 1), target) == 0)
+ {
+ return (char *) "$ORIGIN/tst-audit12mod3.so";
+ }
+ return (char *) name;
+}
Index: b/sysdeps/mach/hurd/dl-sysdep.c
===================================================================
--- a/sysdeps/mach/hurd/dl-sysdep.c
+++ b/sysdeps/mach/hurd/dl-sysdep.c
@@ -187,7 +187,7 @@ unfmh(); /* XXX */
assert_perror (err);
lastslash = strrchr (p, '/');
- l = _dl_map_object_from_fd (lastslash ? lastslash + 1 : p,
+ l = _dl_map_object_from_fd (lastslash ? lastslash + 1 : p, NULL,
memobj, strdup (p), 0);
/* Squirrel away the memory object port where it