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authorH.J. Lu <hjl.tools@gmail.com>2015-03-31 05:20:55 -0700
committerH.J. Lu <hjl.tools@gmail.com>2015-03-31 05:21:12 -0700
commit83569fb894050db7430047da2219ca50c68f882a (patch)
treef9e317037bbc47926fb5e8f955886ea6fafe5337 /elf
parent62da1e3b00b51383ffa7efc89d8addda0502e107 (diff)
downloadglibc-83569fb894050db7430047da2219ca50c68f882a.tar.gz
Add a testcase for copy reloc against protected data
Linkers in some versions of binutils 2.25 and 2.26 don't support protected data symbol with error messsage like: /usr/bin/ld: copy reloc against protected `bar' is invalid /usr/bin/ld: failed to set dynamic section sizes: Bad value We check if linker supports copy reloc against protected data symbol to avoid running the test if linker is broken. [BZ #17711] * config.make.in (have-protected-data): New. * configure.ac: Check linker support for protected data symbol. * configure: Regenerated. * elf/Makefile (modules-names): Add tst-protected1moda and tst-protected1modb if $(have-protected-data) is yes. (tests): Add tst-protected1a and tst-protected1b if $(have-protected-data) is yes. ($(objpfx)tst-protected1a): New. ($(objpfx)tst-protected1b): Likewise. (tst-protected1modb.so-no-z-defs): Likewise. * elf/tst-protected1a.c: New file. * elf/tst-protected1b.c: Likewise. * elf/tst-protected1mod.h: Likewise. * elf/tst-protected1moda.c: Likewise. * elf/tst-protected1modb.c: Likewise.
Diffstat (limited to 'elf')
-rw-r--r--elf/Makefile7
-rw-r--r--elf/tst-protected1a.c236
-rw-r--r--elf/tst-protected1b.c242
-rw-r--r--elf/tst-protected1mod.h41
-rw-r--r--elf/tst-protected1moda.c92
-rw-r--r--elf/tst-protected1modb.c62
6 files changed, 680 insertions, 0 deletions
diff --git a/elf/Makefile b/elf/Makefile
index c8af5ba2c9..e852b5fcaa 100644
--- a/elf/Makefile
+++ b/elf/Makefile
@@ -213,6 +213,13 @@ modules-names = testobj1 testobj2 testobj3 testobj4 testobj5 testobj6 \
tst-initorder2d \
tst-relsort1mod1 tst-relsort1mod2 tst-array2dep \
tst-array5dep tst-null-argv-lib
+ifeq (yes,$(have-protected-data))
+modules-names += tst-protected1moda tst-protected1modb
+tests += tst-protected1a tst-protected1b
+$(objpfx)tst-protected1a: $(addprefix $(objpfx),tst-protected1moda.so tst-protected1modb.so)
+$(objpfx)tst-protected1b: $(addprefix $(objpfx),tst-protected1modb.so tst-protected1moda.so)
+tst-protected1modb.so-no-z-defs = yes
+endif
ifeq (yesyes,$(have-fpie)$(build-shared))
modules-names += tst-piemod1
tests += tst-pie1 tst-pie2
diff --git a/elf/tst-protected1a.c b/elf/tst-protected1a.c
new file mode 100644
index 0000000000..f4e76895a9
--- /dev/null
+++ b/elf/tst-protected1a.c
@@ -0,0 +1,236 @@
+/* Test the protected visibility when main is linked with moda and modb
+ in that order:
+ 1. Protected symbols, protected1, protected2 and protected3, defined
+ in moda, are used in moda.
+ 2. Protected symbol, protected3, defined in modb, are used in modb.
+ 3. Symbol, protected1, defined in moda, is also used in main and modb.
+ 4. Symbol, protected2, defined in main, is used in main.
+ 5. Symbol, protected3, defined in moda, is also used in main.
+
+ 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/>. */
+
+/* This file must be compiled as PIE to avoid copy relocation when
+ accessing protected symbols defined in shared libaries since copy
+ relocation doesn't work with protected symbols and linker in
+ binutils 2.26 enforces this rule. */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include "tst-protected1mod.h"
+
+/* Prototype for our test function. */
+extern int do_test (void);
+
+int protected2 = -1;
+
+#define TEST_FUNCTION do_test ()
+
+/* This defines the `main' function and some more. */
+#include <test-skeleton.c>
+
+int
+do_test (void)
+{
+ int res = 0;
+
+ /* Check if we get the same address for the protected data symbol. */
+ if (&protected1 != protected1a_p ())
+ {
+ puts ("`protected1' in main and moda doesn't have same address");
+ res = 1;
+ }
+ if (&protected1 != protected1b_p ())
+ {
+ puts ("`protected1' in main and modb doesn't have same address");
+ res = 1;
+ }
+
+ /* Check if we get the right value for the protected data symbol. */
+ if (protected1 != 3)
+ {
+ puts ("`protected1' in main and moda doesn't have same value");
+ res = 1;
+ }
+
+ /* Check if we get the right value for data defined in executable. */
+ if (protected2 != -1)
+ {
+ puts ("`protected2' in main has the wrong value");
+ res = 1;
+ }
+
+ /* Check `protected1' in moda. */
+ if (!check_protected1 ())
+ {
+ puts ("`protected1' in moda has the wrong value");
+ res = 1;
+ }
+
+ /* Check `protected2' in moda. */
+ if (!check_protected2 ())
+ {
+ puts ("`protected2' in moda has the wrong value");
+ res = 1;
+ }
+
+ /* Check if we get the same address for the protected data symbol. */
+ if (&protected3 != protected3a_p ())
+ {
+ puts ("`protected3' in main and moda doesn't have same address");
+ res = 1;
+ }
+ if (&protected3 == protected3b_p ())
+ {
+ puts ("`protected3' in main and modb has same address");
+ res = 1;
+ }
+
+ /* Check if we get the right value for the protected data symbol. */
+ if (protected3 != 5)
+ {
+ puts ("`protected3' in main and moda doesn't have same value");
+ res = 1;
+ }
+
+ /* Check `protected3' in moda. */
+ if (!check_protected3a ())
+ {
+ puts ("`protected3' in moda has the wrong value");
+ res = 1;
+ }
+
+ /* Check `protected3' in modb. */
+ if (!check_protected3b ())
+ {
+ puts ("`protected3' in modb has the wrong value");
+ res = 1;
+ }
+
+ /* Set `protected2' in moda to 30. */
+ set_protected2 (300);
+
+ /* Check `protected2' in moda. */
+ if (!check_protected2 ())
+ {
+ puts ("`protected2' in moda has the wrong value");
+ res = 1;
+ }
+
+ /* Set `protected1' in moda to 30. */
+ set_protected1a (30);
+
+ /* Check `protected1' in moda. */
+ if (!check_protected1 ())
+ {
+ puts ("`protected1' in moda has the wrong value");
+ res = 1;
+ }
+
+ /* Check if we get the updated value for the protected data symbol. */
+ if (protected1 != 30)
+ {
+ puts ("`protected1' in main doesn't have the updated value");
+ res = 1;
+ }
+
+ protected2 = -300;
+
+ /* Check `protected2' in moda. */
+ if (!check_protected2 ())
+ {
+ puts ("`protected2' in moda has the wrong value");
+ res = 1;
+ }
+
+ /* Check if data defined in executable is changed. */
+ if (protected2 != -300)
+ {
+ puts ("`protected2' in main is changed");
+ res = 1;
+ }
+
+ /* Set `protected1' in modb to 40. */
+ set_protected1b (40);
+ set_expected_protected1 (40);
+
+ /* Check `protected1' in moda. */
+ if (!check_protected1 ())
+ {
+ puts ("`protected1' in moda has the wrong value");
+ res = 1;
+ }
+
+ /* Check if we get the updated value for the protected data symbol. */
+ if (protected1 != 40)
+ {
+ puts ("`protected1' in main doesn't have the updated value");
+ res = 1;
+ }
+
+ /* Set `protected3' in moda to 80. */
+ set_protected3a (80);
+
+ /* Check `protected3' in moda. */
+ if (!check_protected3a ())
+ {
+ puts ("`protected3' in moda has the wrong value");
+ res = 1;
+ }
+
+ /* Check if we get the updated value for the protected data symbol. */
+ if (protected3 != 80)
+ {
+ puts ("`protected3' in main doesn't have the updated value");
+ res = 1;
+ }
+
+ /* Check `protected3' in modb. */
+ if (!check_protected3b ())
+ {
+ puts ("`protected3' in modb has the wrong value");
+ res = 1;
+ }
+
+ /* Set `protected3' in modb to 100. */
+ set_protected3b (100);
+
+ /* Check `protected3' in moda. */
+ if (!check_protected3a ())
+ {
+ puts ("`protected3' in moda has the wrong value");
+ res = 1;
+ }
+
+ /* Check if we get the updated value for the protected data symbol. */
+ if (protected3 != 80)
+ {
+ puts ("`protected3' in main doesn't have the updated value");
+ res = 1;
+ }
+
+ /* Check `protected3' in modb. */
+ if (!check_protected3b ())
+ {
+ puts ("`protected3' in modb has the wrong value");
+ res = 1;
+ }
+
+ return res;
+}
diff --git a/elf/tst-protected1b.c b/elf/tst-protected1b.c
new file mode 100644
index 0000000000..56352c406f
--- /dev/null
+++ b/elf/tst-protected1b.c
@@ -0,0 +1,242 @@
+/* Test the protected visibility when main is linked with modb and moda
+ in that order:
+ 1. Protected symbols, protected1, protected2 and protected3, defined
+ in moda, are used in moda.
+ 2. Protected symbol, protected3, defined in modb, are used in modb
+ 3. Symbol, protected1, defined in modb, is used in main and modb.
+ 4. Symbol, protected2, defined in main, is used in main.
+ 5. Symbol, protected3, defined in modb, is also used in main.
+
+ 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/>. */
+
+/* This file must be compiled as PIE to avoid copy relocation when
+ accessing protected symbols defined in shared libaries since copy
+ relocation doesn't work with protected symbols and linker in
+ binutils 2.26 enforces this rule. */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include "tst-protected1mod.h"
+
+/* Prototype for our test function. */
+extern int do_test (void);
+
+int protected2 = -1;
+
+#define TEST_FUNCTION do_test ()
+
+/* This defines the `main' function and some more. */
+#include <test-skeleton.c>
+
+int
+do_test (void)
+{
+ int res = 0;
+
+ /* Check if we get the same address for the protected data symbol. */
+ if (&protected1 == protected1a_p ())
+ {
+ puts ("`protected1' in main and moda has same address");
+ res = 1;
+ }
+ if (&protected1 != protected1b_p ())
+ {
+ puts ("`protected1' in main and modb doesn't have same address");
+ res = 1;
+ }
+
+ /* Check if we get the right value for the protected data symbol. */
+ if (protected1 != -3)
+ {
+ puts ("`protected1' in main and modb doesn't have same value");
+ res = 1;
+ }
+
+ /* Check if we get the right value for data defined in executable. */
+ if (protected2 != -1)
+ {
+ puts ("`protected2' in main has the wrong value");
+ res = 1;
+ }
+
+ /* Check `protected1' in moda. */
+ if (!check_protected1 ())
+ {
+ puts ("`protected1' in moda has the wrong value");
+ res = 1;
+ }
+
+ /* Check `protected2' in moda. */
+ if (!check_protected2 ())
+ {
+ puts ("`protected2' in moda has the wrong value");
+ res = 1;
+ }
+
+ /* Check if we get the same address for the protected data symbol. */
+ if (&protected3 == protected3a_p ())
+ {
+ puts ("`protected3' in main and moda has same address");
+ res = 1;
+ }
+ if (&protected3 != protected3b_p ())
+ {
+ puts ("`protected3' in main and modb doesn't have same address");
+ res = 1;
+ }
+
+ /* Check if we get the right value for the protected data symbol. */
+ if (protected3 != -5)
+ {
+ puts ("`protected3' in main and modb doesn't have same value");
+ res = 1;
+ }
+
+ /* Check `protected3' in moda. */
+ if (!check_protected3a ())
+ {
+ puts ("`protected3' in moda has the wrong value");
+ res = 1;
+ }
+
+ /* Check `protected3' in modb. */
+ if (!check_protected3b ())
+ {
+ puts ("`protected3' in modb has the wrong value");
+ res = 1;
+ }
+
+ /* Set `protected2' in moda to 30. */
+ set_protected2 (300);
+
+ /* Check `protected2' in moda. */
+ if (!check_protected2 ())
+ {
+ puts ("`protected2' in moda has the wrong value");
+ res = 1;
+ }
+
+ /* Check if we get the right value for data defined in executable. */
+ if (protected2 != -1)
+ {
+ puts ("`protected2' in main has the wrong value");
+ res = 1;
+ }
+
+ /* Set `protected1' in moda to 30. */
+ set_protected1a (30);
+
+ /* Check `protected1' in moda. */
+ if (!check_protected1 ())
+ {
+ puts ("`protected1' in moda has the wrong value");
+ res = 1;
+ }
+
+ /* Check if we get the same value for the protected data symbol. */
+ if (protected1 != -3)
+ {
+ puts ("`protected1' in main has the wrong value");
+ res = 1;
+ }
+
+ protected2 = -300;
+
+ /* Check `protected2' in moda. */
+ if (!check_protected2 ())
+ {
+ puts ("`protected2' in moda has the wrong value");
+ res = 1;
+ }
+
+ /* Check if data defined in executable is changed. */
+ if (protected2 != -300)
+ {
+ puts ("`protected2' in main is changed");
+ res = 1;
+ }
+
+ /* Set `protected1' in modb to 40. */
+ set_protected1b (40);
+
+ /* Check `protected1' in moda. */
+ if (!check_protected1 ())
+ {
+ puts ("`protected1' in moda has the wrong value");
+ res = 1;
+ }
+
+ /* Check if we get the updated value for the protected data symbol. */
+ if (protected1 != 40)
+ {
+ puts ("`protected1' in main doesn't have the updated value");
+ res = 1;
+ }
+
+ /* Set `protected3' in moda to 80. */
+ set_protected3a (80);
+
+ /* Check `protected3' in moda. */
+ if (!check_protected3a ())
+ {
+ puts ("`protected3' in moda has the wrong value");
+ res = 1;
+ }
+
+ /* Check if we get the updated value for the protected data symbol. */
+ if (protected3 != -5)
+ {
+ puts ("`protected3' in main doesn't have the updated value");
+ res = 1;
+ }
+
+ /* Check `protected3' in modb. */
+ if (!check_protected3b ())
+ {
+ puts ("`protected3' in modb has the wrong value");
+ res = 1;
+ }
+
+ /* Set `protected3' in modb to 100. */
+ set_protected3b (100);
+
+ /* Check `protected3' in moda. */
+ if (!check_protected3a ())
+ {
+ puts ("`protected3' in moda has the wrong value");
+ res = 1;
+ }
+
+ /* Check if we get the updated value for the protected data symbol. */
+ if (protected3 != 100)
+ {
+ puts ("`protected3' in main doesn't have the updated value");
+ res = 1;
+ }
+
+ /* Check `protected3' in modb. */
+ if (!check_protected3b ())
+ {
+ puts ("`protected3' in modb has the wrong value");
+ res = 1;
+ }
+
+ return res;
+}
diff --git a/elf/tst-protected1mod.h b/elf/tst-protected1mod.h
new file mode 100644
index 0000000000..301e019dd8
--- /dev/null
+++ b/elf/tst-protected1mod.h
@@ -0,0 +1,41 @@
+/* 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/>. */
+
+/* Prototypes for the functions in the DSOs. */
+extern int protected1;
+extern int protected2;
+extern int protected3;
+
+extern void set_protected1a (int);
+extern void set_protected1b (int);
+extern int *protected1a_p (void);
+extern int *protected1b_p (void);
+
+extern void set_expected_protected1 (int);
+extern int check_protected1 (void);
+
+extern void set_protected2 (int);
+extern int check_protected2 (void);
+
+extern void set_expected_protected3a (int);
+extern void set_protected3a (int);
+extern int check_protected3a (void);
+extern int *protected3a_p (void);
+extern void set_expected_protected3b (int);
+extern void set_protected3b (int);
+extern int check_protected3b (void);
+extern int *protected3b_p (void);
diff --git a/elf/tst-protected1moda.c b/elf/tst-protected1moda.c
new file mode 100644
index 0000000000..720f474281
--- /dev/null
+++ b/elf/tst-protected1moda.c
@@ -0,0 +1,92 @@
+/* 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 "tst-protected1mod.h"
+
+int protected1 = 3;
+static int expected_protected1 = 3;
+int protected2 = 4;
+static int expected_protected2 = 4;
+int protected3 = 5;
+static int expected_protected3 = 5;
+
+asm (".protected protected1");
+asm (".protected protected2");
+asm (".protected protected3");
+
+void
+set_protected1a (int i)
+{
+ protected1 = i;
+ set_expected_protected1 (i);
+}
+
+void
+set_expected_protected1 (int i)
+{
+ expected_protected1 = i;
+}
+
+int *
+protected1a_p (void)
+{
+ return &protected1;
+}
+
+int
+check_protected1 (void)
+{
+ return protected1 == expected_protected1;
+}
+
+void
+set_protected2 (int i)
+{
+ protected2 = i;
+ expected_protected2 = i;
+}
+
+int
+check_protected2 (void)
+{
+ return protected2 == expected_protected2;
+}
+
+void
+set_expected_protected3a (int i)
+{
+ expected_protected3 = i;
+}
+
+void
+set_protected3a (int i)
+{
+ protected3 = i;
+ set_expected_protected3a (i);
+}
+
+int
+check_protected3a (void)
+{
+ return protected3 == expected_protected3;
+}
+
+int *
+protected3a_p (void)
+{
+ return &protected3;
+}
diff --git a/elf/tst-protected1modb.c b/elf/tst-protected1modb.c
new file mode 100644
index 0000000000..ddfa646ec3
--- /dev/null
+++ b/elf/tst-protected1modb.c
@@ -0,0 +1,62 @@
+/* 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 <stdlib.h>
+#include "tst-protected1mod.h"
+
+int protected1 = -3;
+int protected3 = -5;
+static int expected_protected3 = -5;
+
+asm (".protected protected3");
+
+void
+set_protected1b (int i)
+{
+ protected1 = i;
+}
+
+int *
+protected1b_p (void)
+{
+ return &protected1;
+}
+
+void
+set_expected_protected3b (int i)
+{
+ expected_protected3 = i;
+}
+
+void
+set_protected3b (int i)
+{
+ protected3 = i;
+ set_expected_protected3b (i);
+}
+
+int
+check_protected3b (void)
+{
+ return protected3 == expected_protected3;
+}
+
+int *
+protected3b_p (void)
+{
+ return &protected3;
+}