|
 |
a41fe4 |
commit 2bbd07c715275eb6c616988925738a0517180d57
|
|
|
a41fe4 |
Author: Siddhesh Poyarekar <siddhesh@sourceware.org>
|
|
|
a41fe4 |
Date: Fri Dec 17 18:35:44 2021 +0530
|
|
|
a41fe4 |
|
|
|
a41fe4 |
fortify: Fix spurious warning with realpath
|
|
|
a41fe4 |
|
|
|
a41fe4 |
The length and object size arguments were swapped around for realpath.
|
|
|
a41fe4 |
Also add a smoke test so that any changes in this area get caught in
|
|
|
a41fe4 |
future.
|
|
|
a41fe4 |
|
|
|
a41fe4 |
Signed-off-by: Siddhesh Poyarekar <siddhesh@sourceware.org>
|
|
|
a41fe4 |
Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
|
|
|
a41fe4 |
|
|
|
a41fe4 |
diff --git a/debug/Makefile b/debug/Makefile
|
|
|
a41fe4 |
index 81361438fc3d2aa9..b43f42ee3851f360 100644
|
|
|
a41fe4 |
--- a/debug/Makefile
|
|
|
a41fe4 |
+++ b/debug/Makefile
|
|
|
a41fe4 |
@@ -108,6 +108,7 @@ CFLAGS-tst-longjmp_chk2.c += -fexceptions -fasynchronous-unwind-tables
|
|
|
a41fe4 |
CPPFLAGS-tst-longjmp_chk2.c += -D_FORTIFY_SOURCE=1
|
|
|
a41fe4 |
CFLAGS-tst-longjmp_chk3.c += -fexceptions -fasynchronous-unwind-tables
|
|
|
a41fe4 |
CPPFLAGS-tst-longjmp_chk3.c += -D_FORTIFY_SOURCE=1
|
|
|
a41fe4 |
+CPPFLAGS-tst-realpath-chk.c += -D_FORTIFY_SOURCE=2
|
|
|
a41fe4 |
|
|
|
a41fe4 |
# We know these tests have problems with format strings, this is what
|
|
|
a41fe4 |
# we are testing. Disable that warning. They are also testing
|
|
|
a41fe4 |
@@ -155,7 +156,7 @@ tests = backtrace-tst tst-longjmp_chk tst-chk1 tst-chk2 tst-chk3 \
|
|
|
a41fe4 |
tst-lfschk1 tst-lfschk2 tst-lfschk3 test-strcpy_chk test-stpcpy_chk \
|
|
|
a41fe4 |
tst-chk4 tst-chk5 tst-chk6 tst-chk7 tst-chk8 tst-lfschk4 tst-lfschk5 \
|
|
|
a41fe4 |
tst-lfschk6 tst-longjmp_chk2 tst-backtrace2 tst-backtrace3 \
|
|
|
a41fe4 |
- tst-backtrace4 tst-backtrace5 tst-backtrace6
|
|
|
a41fe4 |
+ tst-backtrace4 tst-backtrace5 tst-backtrace6 tst-realpath-chk
|
|
|
a41fe4 |
|
|
|
a41fe4 |
ifeq ($(have-ssp),yes)
|
|
|
a41fe4 |
tests += tst-ssp-1
|
|
|
a41fe4 |
diff --git a/debug/tst-realpath-chk.c b/debug/tst-realpath-chk.c
|
|
|
a41fe4 |
new file mode 100644
|
|
|
a41fe4 |
index 0000000000000000..a8fcb327c43fb34d
|
|
|
a41fe4 |
--- /dev/null
|
|
|
a41fe4 |
+++ b/debug/tst-realpath-chk.c
|
|
|
a41fe4 |
@@ -0,0 +1,37 @@
|
|
|
a41fe4 |
+/* Smoke test to verify that realpath does not cause spurious warnings.
|
|
|
a41fe4 |
+ Copyright The GNU Toolchain Authors.
|
|
|
a41fe4 |
+ This file is part of the GNU C Library.
|
|
|
a41fe4 |
+
|
|
|
a41fe4 |
+ The GNU C Library is free software; you can redistribute it and/or
|
|
|
a41fe4 |
+ modify it under the terms of the GNU Lesser General Public
|
|
|
a41fe4 |
+ License as published by the Free Software Foundation; either
|
|
|
a41fe4 |
+ version 2.1 of the License, or (at your option) any later version.
|
|
|
a41fe4 |
+
|
|
|
a41fe4 |
+ The GNU C Library is distributed in the hope that it will be useful,
|
|
|
a41fe4 |
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
|
a41fe4 |
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
|
a41fe4 |
+ Lesser General Public License for more details.
|
|
|
a41fe4 |
+
|
|
|
a41fe4 |
+ You should have received a copy of the GNU Lesser General Public
|
|
|
a41fe4 |
+ License along with the GNU C Library; if not, see
|
|
|
a41fe4 |
+ <https://www.gnu.org/licenses/>. */
|
|
|
a41fe4 |
+
|
|
|
a41fe4 |
+#include <limits.h>
|
|
|
a41fe4 |
+#include <stdlib.h>
|
|
|
a41fe4 |
+
|
|
|
a41fe4 |
+#include <support/check.h>
|
|
|
a41fe4 |
+#include <support/support.h>
|
|
|
a41fe4 |
+
|
|
|
a41fe4 |
+static int
|
|
|
a41fe4 |
+do_test (void)
|
|
|
a41fe4 |
+{
|
|
|
a41fe4 |
+#ifdef PATH_MAX
|
|
|
a41fe4 |
+ char buf[PATH_MAX + 1];
|
|
|
a41fe4 |
+ char *res = realpath (".", buf);
|
|
|
a41fe4 |
+ TEST_VERIFY (res == buf);
|
|
|
a41fe4 |
+#endif
|
|
|
a41fe4 |
+
|
|
|
a41fe4 |
+ return 0;
|
|
|
a41fe4 |
+}
|
|
|
a41fe4 |
+
|
|
|
a41fe4 |
+#include <support/test-driver.c>
|
|
|
a41fe4 |
diff --git a/stdlib/bits/stdlib.h b/stdlib/bits/stdlib.h
|
|
|
a41fe4 |
index 7ea364a276497720..81ec9bdb32215e3b 100644
|
|
|
a41fe4 |
--- a/stdlib/bits/stdlib.h
|
|
|
a41fe4 |
+++ b/stdlib/bits/stdlib.h
|
|
|
a41fe4 |
@@ -42,7 +42,7 @@ __NTH (realpath (const char *__restrict __name, char *__restrict __resolved))
|
|
|
a41fe4 |
return __realpath_alias (__name, __resolved);
|
|
|
a41fe4 |
|
|
|
a41fe4 |
#if defined _LIBC_LIMITS_H_ && defined PATH_MAX
|
|
|
a41fe4 |
- if (__glibc_unsafe_len (sz, sizeof (char), PATH_MAX))
|
|
|
a41fe4 |
+ if (__glibc_unsafe_len (PATH_MAX, sizeof (char), sz))
|
|
|
a41fe4 |
return __realpath_chk_warn (__name, __resolved, sz);
|
|
|
a41fe4 |
#endif
|
|
|
a41fe4 |
return __realpath_chk (__name, __resolved, sz);
|