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-rw-r--r--debug/Makefile23
-rw-r--r--debug/Versions8
-rw-r--r--debug/chk_fail.c38
-rw-r--r--debug/fprintf_chk.c45
-rw-r--r--debug/gets_chk.c77
-rw-r--r--debug/printf_chk.c45
-rw-r--r--debug/snprintf_chk.c38
-rw-r--r--debug/sprintf_chk.c35
-rw-r--r--debug/test-stpcpy_chk.c46
-rw-r--r--debug/test-strcpy_chk.c370
-rw-r--r--debug/tst-chk1.c466
-rw-r--r--debug/tst-chk2.c2
-rw-r--r--debug/tst-chk3.c2
-rw-r--r--debug/vfprintf_chk.c42
-rw-r--r--debug/vprintf_chk.c42
-rw-r--r--debug/vsnprintf_chk.c70
-rw-r--r--debug/vsprintf_chk.c91
17 files changed, 1436 insertions, 4 deletions
diff --git a/debug/Makefile b/debug/Makefile
index aba98926da..fed60d78b5 100644
--- a/debug/Makefile
+++ b/debug/Makefile
@@ -1,4 +1,4 @@
-# Copyright (C) 1998, 1999, 2000, 2001 Free Software Foundation, Inc.
+# Copyright (C) 1998, 1999, 2000, 2001, 2004 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
@@ -24,11 +24,26 @@ subdir := debug
headers := execinfo.h
distribute = sigcontextinfo.h register-dump.h frame.h
-routines := backtrace backtracesyms backtracesymsfd noophooks
+routines := backtrace backtracesyms backtracesymsfd noophooks \
+ memcpy_chk memmove_chk mempcpy_chk memset_chk stpcpy_chk \
+ strcat_chk strcpy_chk strncat_chk strncpy_chk \
+ sprintf_chk vsprintf_chk snprintf_chk vsnprintf_chk \
+ printf_chk fprintf_chk vprintf_chk vfprintf_chk \
+ gets_chk chk_fail readonly-area
CFLAGS-backtrace.c = -fno-omit-frame-pointer
-
-tests = backtrace-tst
+CFLAGS-sprintf_chk.c = -D_IO_MTSAFE_IO
+CFLAGS-snprintf_chk.c = -D_IO_MTSAFE_IO
+CFLAGS-vsprintf_chk.c = -D_IO_MTSAFE_IO
+CFLAGS-vsnprintf_chk.c = -D_IO_MTSAFE_IO
+CFLAGS-printf_chk.c = -D_IO_MTSAFE_IO $(exceptions)
+CFLAGS-fprintf_chk.c = -D_IO_MTSAFE_IO $(exceptions)
+CFLAGS-vprintf_chk.c = -D_IO_MTSAFE_IO $(exceptions)
+CFLAGS-vfprintf_chk.c = -D_IO_MTSAFE_IO $(exceptions)
+CFLAGS-gets_chk.c = -D_IO_MTSAFE_IO $(exceptions)
+
+tests = backtrace-tst tst-chk1 tst-chk2 tst-chk3 \
+ test-strcpy_chk test-stpcpy_chk
extra-libs = libSegFault libpcprofile
extra-libs-others = $(extra-libs)
diff --git a/debug/Versions b/debug/Versions
index c2b6396d82..07d6fbb830 100644
--- a/debug/Versions
+++ b/debug/Versions
@@ -10,4 +10,12 @@ libc {
# These are to support some gcc features.
__cyg_profile_func_enter; __cyg_profile_func_exit;
}
+ GLIBC_2.3.4 {
+ __chk_fail;
+ __memcpy_chk; __memmove_chk; __mempcpy_chk; __memset_chk; __stpcpy_chk;
+ __strcat_chk; __strcpy_chk; __strncat_chk; __strncpy_chk;
+ __sprintf_chk; __vsprintf_chk; __snprintf_chk; __vsnprintf_chk;
+ __printf_chk; __fprintf_chk; __vprintf_chk; __vfprintf_chk;
+ __gets_chk;
+ }
}
diff --git a/debug/chk_fail.c b/debug/chk_fail.c
new file mode 100644
index 0000000000..48848fbe35
--- /dev/null
+++ b/debug/chk_fail.c
@@ -0,0 +1,38 @@
+/* Copyright (C) 2004 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, write to the Free
+ Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+ 02111-1307 USA. */
+
+#include <stdlib.h>
+#include <unistd.h>
+#include <abort-instr.h>
+
+
+void
+__attribute__ ((noreturn))
+__chk_fail (void)
+{
+ while (1)
+ {
+ /* This will leave a nice backtrace. */
+ abort ();
+#ifdef ABORT_INSTRUCTION
+ ABORT_INSTRUCTION;
+#endif
+ _exit (127);
+ }
+}
+libc_hidden_def (__chk_fail)
diff --git a/debug/fprintf_chk.c b/debug/fprintf_chk.c
new file mode 100644
index 0000000000..77508b902e
--- /dev/null
+++ b/debug/fprintf_chk.c
@@ -0,0 +1,45 @@
+/* Copyright (C) 1991, 1995, 1996, 1997, 2001, 2004
+ 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, write to the Free
+ Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+ 02111-1307 USA. */
+
+#include <stdarg.h>
+#include <stdio.h>
+#include "../libio/libioP.h"
+
+
+/* Write formatted output to FP from the format string FORMAT. */
+int
+__fprintf_chk (FILE *fp, int flag, const char *format, ...)
+{
+ va_list ap;
+ int done;
+
+ _IO_acquire_lock (fp);
+ if (flag > 0)
+ fp->_flags2 |= _IO_FLAGS2_CHECK_PERCENT_N;
+
+ va_start (ap, format);
+ done = vfprintf (fp, format, ap);
+ va_end (ap);
+
+ if (flag > 0)
+ fp->_flags2 &= ~_IO_FLAGS2_CHECK_PERCENT_N;
+ _IO_release_lock (fp);
+
+ return done;
+}
diff --git a/debug/gets_chk.c b/debug/gets_chk.c
new file mode 100644
index 0000000000..3715a39672
--- /dev/null
+++ b/debug/gets_chk.c
@@ -0,0 +1,77 @@
+/* Copyright (C) 1993, 1996, 1997, 1998, 2002, 2003, 2004
+ 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, write to the Free
+ Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+ 02111-1307 USA.
+
+ As a special exception, if you link the code in this file with
+ files compiled with a GNU compiler to produce an executable,
+ that does not cause the resulting executable to be covered by
+ the GNU Lesser General Public License. This exception does not
+ however invalidate any other reasons why the executable file
+ might be covered by the GNU Lesser General Public License.
+ This exception applies to code released by its copyright holders
+ in files containing the exception. */
+
+#include "../libio/libioP.h"
+#include <limits.h>
+
+char *
+__gets_chk (char *buf, size_t size)
+{
+ _IO_size_t count;
+ int ch;
+ char *retval;
+
+ if (size == 0)
+ __chk_fail ();
+
+ _IO_acquire_lock (_IO_stdin);
+ ch = _IO_getc_unlocked (_IO_stdin);
+ if (ch == EOF)
+ {
+ retval = NULL;
+ goto unlock_return;
+ }
+ if (ch == '\n')
+ count = 0;
+ else
+ {
+ /* This is very tricky since a file descriptor may be in the
+ non-blocking mode. The error flag doesn't mean much in this
+ case. We return an error only when there is a new error. */
+ int old_error = _IO_stdin->_IO_file_flags & _IO_ERR_SEEN;
+ _IO_stdin->_IO_file_flags &= ~_IO_ERR_SEEN;
+ buf[0] = (char) ch;
+ count = INTUSE(_IO_getline) (_IO_stdin, buf + 1, size - 1, '\n', 0) + 1;
+ if (_IO_stdin->_IO_file_flags & _IO_ERR_SEEN)
+ {
+ retval = NULL;
+ goto unlock_return;
+ }
+ else
+ _IO_stdin->_IO_file_flags |= old_error;
+ }
+ if (count >= size)
+ __chk_fail ();
+ buf[count] = 0;
+ retval = buf;
+unlock_return:
+ _IO_release_lock (_IO_stdin);
+ return retval;
+}
+
+link_warning (__gets_chk, "the `gets' function is dangerous and should not be used.")
diff --git a/debug/printf_chk.c b/debug/printf_chk.c
new file mode 100644
index 0000000000..d2b387323d
--- /dev/null
+++ b/debug/printf_chk.c
@@ -0,0 +1,45 @@
+/* Copyright (C) 1991, 1995, 1996, 1997, 2001, 2004
+ 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, write to the Free
+ Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+ 02111-1307 USA. */
+
+#include <stdarg.h>
+#include <stdio.h>
+#include "../libio/libioP.h"
+
+
+/* Write formatted output to stdout from the format string FORMAT. */
+int
+__printf_chk (int flag, const char *format, ...)
+{
+ va_list ap;
+ int done;
+
+ _IO_acquire_lock (stdout);
+ if (flag > 0)
+ stdout->_flags2 |= _IO_FLAGS2_CHECK_PERCENT_N;
+
+ va_start (ap, format);
+ done = vfprintf (stdout, format, ap);
+ va_end (ap);
+
+ if (flag > 0)
+ stdout->_flags2 &= ~_IO_FLAGS2_CHECK_PERCENT_N;
+ _IO_release_lock (stdout);
+
+ return done;
+}
diff --git a/debug/snprintf_chk.c b/debug/snprintf_chk.c
new file mode 100644
index 0000000000..5a77afef29
--- /dev/null
+++ b/debug/snprintf_chk.c
@@ -0,0 +1,38 @@
+/* Copyright (C) 1991, 1995, 1997, 1998, 2004 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, write to the Free
+ Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+ 02111-1307 USA. */
+
+#include <stdarg.h>
+#include <stdio.h>
+
+
+/* Write formatted output into S, according to the format
+ string FORMAT, writing no more than MAXLEN characters. */
+/* VARARGS5 */
+int
+__snprintf_chk (char *s, size_t maxlen, int flags, size_t slen,
+ const char *format, ...)
+{
+ va_list arg;
+ int done;
+
+ va_start (arg, format);
+ done = __vsnprintf_chk (s, maxlen, flags, slen, format, arg);
+ va_end (arg);
+
+ return done;
+}
diff --git a/debug/sprintf_chk.c b/debug/sprintf_chk.c
new file mode 100644
index 0000000000..d141633b9f
--- /dev/null
+++ b/debug/sprintf_chk.c
@@ -0,0 +1,35 @@
+/* Copyright (C) 1991,1995,1997,1998,2002,2004 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, write to the Free
+ Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+ 02111-1307 USA. */
+
+#include <stdarg.h>
+#include <stdio.h>
+
+/* Write formatted output into S, according to the format string FORMAT. */
+/* VARARGS4 */
+int
+__sprintf_chk (char *s, int flags, size_t slen, const char *format, ...)
+{
+ va_list arg;
+ int done;
+
+ va_start (arg, format);
+ done = __vsprintf_chk (s, flags, slen, format, arg);
+ va_end (arg);
+
+ return done;
+}
diff --git a/debug/test-stpcpy_chk.c b/debug/test-stpcpy_chk.c
new file mode 100644
index 0000000000..d717ca7363
--- /dev/null
+++ b/debug/test-stpcpy_chk.c
@@ -0,0 +1,46 @@
+/* Test and measure stpcpy checking functions.
+ Copyright (C) 1999, 2002, 2004 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+ Written by Jakub Jelinek <jakub@redhat.com>, 1999.
+
+ 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, write to the Free
+ Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+ 02111-1307 USA. */
+
+#define STRCPY_RESULT(dst, len) ((dst) + (len))
+#define TEST_MAIN
+#include "../string/test-string.h"
+
+extern void __attribute__ ((noreturn)) __chk_fail (void);
+char *simple_stpcpy_chk (char *, const char *, size_t);
+extern char *normal_stpcpy (char *, const char *, size_t)
+ __asm ("stpcpy");
+extern char *__stpcpy_chk (char *, const char *, size_t);
+
+IMPL (simple_stpcpy_chk, 0)
+IMPL (normal_stpcpy, 1)
+IMPL (__stpcpy_chk, 2)
+
+char *
+simple_stpcpy_chk (char *dst, const char *src, size_t len)
+{
+ if (! len)
+ __chk_fail ();
+ while ((*dst++ = *src++) != '\0')
+ if (--len == 0)
+ __chk_fail ();
+ return dst - 1;
+}
+
+#include "test-strcpy_chk.c"
diff --git a/debug/test-strcpy_chk.c b/debug/test-strcpy_chk.c
new file mode 100644
index 0000000000..4c61f4fb43
--- /dev/null
+++ b/debug/test-strcpy_chk.c
@@ -0,0 +1,370 @@
+/* Test and measure __strcpy_chk functions.
+ Copyright (C) 1999, 2002, 2003, 2004 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+ Written by Jakub Jelinek <jakub@redhat.com>, 1999.
+
+ 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, write to the Free
+ Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+ 02111-1307 USA. */
+
+#ifndef STRCPY_RESULT
+# define STRCPY_RESULT(dst, len) dst
+# define TEST_MAIN
+# include "../string/test-string.h"
+
+extern void __attribute__ ((noreturn)) __chk_fail (void);
+char *simple_strcpy_chk (char *, const char *, size_t);
+extern char *normal_strcpy (char *, const char *, size_t)
+ __asm ("strcpy");
+extern char *__strcpy_chk (char *, const char *, size_t);
+
+IMPL (simple_strcpy_chk, 0)
+IMPL (normal_strcpy, 1)
+IMPL (__strcpy_chk, 2)
+
+char *
+simple_strcpy_chk (char *dst, const char *src, size_t len)
+{
+ char *ret = dst;
+ if (! len)
+ __chk_fail ();
+ while ((*dst++ = *src++) != '\0')
+ if (--len == 0)
+ __chk_fail ();
+ return ret;
+}
+#endif
+
+#include <setjmp.h>
+#include <signal.h>
+
+volatile int chk_fail_ok;
+jmp_buf chk_fail_buf;
+
+static void
+handler (int sig)
+{
+ if (chk_fail_ok)
+ {
+ chk_fail_ok = 0;
+ longjmp (chk_fail_buf, 1);
+ }
+ else
+ _exit (127);
+}
+
+typedef char *(*proto_t) (char *, const char *, size_t);
+
+static void
+do_one_test (impl_t *impl, char *dst, const char *src,
+ size_t len, size_t dlen)
+{
+ char *res;
+ if (dlen <= len)
+ {
+ if (impl->test == 1)
+ return;
+
+ chk_fail_ok = 1;
+ if (setjmp (chk_fail_buf) == 0)
+ {
+ res = CALL (impl, dst, src, dlen);
+ error (0, 0, "Function %s (%zd; %zd) did not __chk_fail",
+ impl->name, len, dlen);
+ chk_fail_ok = 0;
+ ret = 1;
+ }
+ return;
+ }
+ else
+ res = CALL (impl, dst, src, dlen);
+
+ if (res != STRCPY_RESULT (dst, len))
+ {
+ error (0, 0, "Wrong result in function %s %p %p", impl->name,
+ res, STRCPY_RESULT (dst, len));
+ ret = 1;
+ return;
+ }
+
+ if (strcmp (dst, src) != 0)
+ {
+ error (0, 0, "Wrong result in function %s dst \"%s\" src \"%s\"",
+ impl->name, dst, src);
+ ret = 1;
+ return;
+ }
+
+ if (HP_TIMING_AVAIL)
+ {
+ hp_timing_t start __attribute ((unused));
+ hp_timing_t stop __attribute ((unused));;
+ hp_timing_t best_time = ~ (hp_timing_t) 0;
+ size_t i;
+
+ for (i = 0; i < 32; ++i)
+ {
+ HP_TIMING_NOW (start);
+ CALL (impl, dst, src, dlen);
+ HP_TIMING_NOW (stop);
+ HP_TIMING_BEST (best_time, start, stop);
+ }
+
+ printf ("\t%zd", (size_t) best_time);
+ }
+}
+
+static void
+do_test (size_t align1, size_t align2, size_t len, size_t dlen, int max_char)
+{
+ size_t i;
+ char *s1, *s2;
+
+ align1 &= 7;
+ if (align1 + len >= page_size)
+ return;
+
+ align2 &= 7;
+ if (align2 + len >= page_size)
+ return;
+
+ s1 = buf1 + align1;
+ s2 = buf2 + align2;
+
+ for (i = 0; i < len; i++)
+ s1[i] = 32 + 23 * i % (max_char - 32);
+ s1[len] = 0;
+
+ if (HP_TIMING_AVAIL && dlen > len)
+ printf ("Length %4zd, alignment %2zd/%2zd:", len, align1, align2);
+
+ FOR_EACH_IMPL (impl, 0)
+ do_one_test (impl, s2, s1, len, dlen);
+
+ if (HP_TIMING_AVAIL && dlen > len)
+ putchar ('\n');
+}
+
+static void
+do_random_tests (void)
+{
+ size_t i, j, n, align1, align2, len, dlen;
+ unsigned char *p1 = buf1 + page_size - 512;
+ unsigned char *p2 = buf2 + page_size - 512;
+ unsigned char *res;
+
+ for (n = 0; n < ITERATIONS; n++)
+ {
+ align1 = random () & 31;
+ if (random () & 1)
+ align2 = random () & 31;
+ else
+ align2 = align1 + (random () & 24);
+ len = random () & 511;
+ j = align1;
+ if (align2 > j)
+ j = align2;
+ if (len + j >= 511)
+ len = 510 - j - (random () & 7);
+ j = len + align1 + 64;
+ if (j > 512)
+ j = 512;
+ for (i = 0; i < j; i++)
+ {
+ if (i == len + align1)
+ p1[i] = 0;
+ else
+ {
+ p1[i] = random () & 255;
+ if (i >= align1 && i < len + align1 && !p1[i])
+ p1[i] = (random () & 127) + 3;
+ }
+ }
+
+ switch (random () & 7)
+ {
+ case 0:
+ dlen = len - (random () & 31);
+ if (dlen > len)
+ dlen = len;
+ break;
+ case 1:
+ dlen = (size_t) -1;
+ break;
+ case 2:
+ dlen = len + 1 + (random () & 65535);
+ break;
+ case 3:
+ dlen = len + 1 + (random () & 255);
+ break;
+ case 4:
+ dlen = len + 1 + (random () & 31);
+ break;
+ case 5:
+ dlen = len + 1 + (random () & 7);
+ break;
+ case 6:
+ dlen = len + 1 + (random () & 3);
+ break;
+ default:
+ dlen = len + 1;
+ break;
+ }
+
+ FOR_EACH_IMPL (impl, 1)
+ {
+ if (dlen <= len)
+ {
+ if (impl->test != 1)
+ {
+ chk_fail_ok = 1;
+ if (setjmp (chk_fail_buf) == 0)
+ {
+ res = CALL (impl, p2 + align2, p1 + align1, dlen);
+ error (0, 0, "Iteration %zd - did not __chk_fail", n);
+ chk_fail_ok = 0;
+ ret = 1;
+ }
+ }
+ continue;
+ }
+ memset (p2 - 64, '\1', 512 + 64);
+ res = CALL (impl, p2 + align2, p1 + align1, dlen);
+ if (res != STRCPY_RESULT (p2 + align2, len))
+ {
+ error (0, 0, "Iteration %zd - wrong result in function %s (%zd, %zd, %zd) %p != %p",
+ n, impl->name, align1, align2, len, res,
+ STRCPY_RESULT (p2 + align2, len));
+ ret = 1;
+ }
+ for (j = 0; j < align2 + 64; ++j)
+ {
+ if (p2[j - 64] != '\1')
+ {
+ error (0, 0, "Iteration %zd - garbage before, %s (%zd, %zd, %zd)",
+ n, impl->name, align1, align2, len);
+ ret = 1;
+ break;
+ }
+ }
+ for (j = align2 + len + 1; j < 512; ++j)
+ {
+ if (p2[j] != '\1')
+ {
+ error (0, 0, "Iteration %zd - garbage after, %s (%zd, %zd, %zd)",
+ n, impl->name, align1, align2, len);
+ ret = 1;
+ break;
+ }
+ }
+ if (memcmp (p1 + align1, p2 + align2, len + 1))
+ {
+ error (0, 0, "Iteration %zd - different strings, %s (%zd, %zd, %zd)",
+ n, impl->name, align1, align2, len);
+ ret = 1;
+ }
+ }
+ }
+}
+
+int
+test_main (void)
+{
+ size_t i;
+
+ struct sigaction sa;
+ sa.sa_handler = handler;
+ sa.sa_flags = 0;
+ sigemptyset (&sa.sa_mask);
+
+ sigaction (SIGABRT, &sa, NULL);
+
+ test_init ();
+
+ printf ("%23s", "");
+ FOR_EACH_IMPL (impl, 0)
+ printf ("\t%s", impl->name);
+ putchar ('\n');
+
+ for (i = 0; i < 16; ++i)
+ {
+ do_test (0, 0, i, i + 1, 127);
+ do_test (0, 0, i, i + 1, 255);
+ do_test (0, i, i, i + 1, 127);
+ do_test (i, 0, i, i + 1, 255);
+ }
+
+ for (i = 1; i < 8; ++i)
+ {
+ do_test (0, 0, 8 << i, (8 << i) + 1, 127);
+ do_test (8 - i, 2 * i, (8 << i), (8 << i) + 1, 127);
+ }
+
+ for (i = 1; i < 8; ++i)
+ {
+ do_test (i, 2 * i, (8 << i), (8 << i) + 1, 127);
+ do_test (2 * i, i, (8 << i), (8 << i) + 1, 255);
+ do_test (i, i, (8 << i), (8 << i) + 1, 127);
+ do_test (i, i, (8 << i), (8 << i) + 1, 255);
+ }
+
+ for (i = 0; i < 16; ++i)
+ {
+ do_test (0, 0, i, i + 256, 127);
+ do_test (0, 0, i, i + 256, 255);
+ do_test (0, i, i, i + 256, 127);
+ do_test (i, 0, i, i + 256, 255);
+ }
+
+ for (i = 1; i < 8; ++i)
+ {
+ do_test (0, 0, 8 << i, (8 << i) + 256, 127);
+ do_test (8 - i, 2 * i, (8 << i), (8 << i) + 256, 127);
+ }
+
+ for (i = 1; i < 8; ++i)
+ {
+ do_test (i, 2 * i, (8 << i), (8 << i) + 256, 127);
+ do_test (2 * i, i, (8 << i), (8 << i) + 256, 255);
+ do_test (i, i, (8 << i), (8 << i) + 256, 127);
+ do_test (i, i, (8 << i), (8 << i) + 256, 255);
+ }
+
+ for (i = 0; i < 16; ++i)
+ {
+ do_test (0, 0, i, i, 127);
+ do_test (0, 0, i, i + 2, 255);
+ do_test (0, i, i, i + 3, 127);
+ do_test (i, 0, i, i + 4, 255);
+ }
+
+ for (i = 1; i < 8; ++i)
+ {
+ do_test (0, 0, 8 << i, (8 << i) - 15, 127);
+ do_test (8 - i, 2 * i, (8 << i), (8 << i) + 5, 127);
+ }
+
+ for (i = 1; i < 8; ++i)
+ {
+ do_test (i, 2 * i, (8 << i), (8 << i) + i, 127);
+ do_test (2 * i, i, (8 << i), (8 << i) + (i - 1), 255);
+ do_test (i, i, (8 << i), (8 << i) + i + 2, 127);
+ do_test (i, i, (8 << i), (8 << i) + i + 3, 255);
+ }
+
+ do_random_tests ();
+ return ret;
+}
+
+#include "../test-skeleton.c"
diff --git a/debug/tst-chk1.c b/debug/tst-chk1.c
new file mode 100644
index 0000000000..639da3847c
--- /dev/null
+++ b/debug/tst-chk1.c
@@ -0,0 +1,466 @@
+/* Copyright (C) 2004 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+ Contributed by Jakub Jelinek <jakub@redhat.com>, 2004.
+
+ 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, write to the Free
+ Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+ 02111-1307 USA. */
+
+#include <setjmp.h>
+#include <signal.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+
+char *temp_filename;
+static void do_prepare (void);
+static int do_test (void);
+#define PREPARE(argc, argv) do_prepare ()
+#define TEST_FUNCTION do_test ()
+#include "../test-skeleton.c"
+
+static void
+do_prepare (void)
+{
+ int temp_fd = create_temp_file ("tst-chk1.", &temp_filename);
+ if (temp_fd == -1)
+ {
+ printf ("cannot create temporary file: %m\n");
+ exit (1);
+ }
+
+ const char *strs = "abcdefgh\nABCDEFGHI\nabcdefghij\nABCDEFGHIJ";
+ if (write (temp_fd, strs, strlen (strs)) != strlen (strs))
+ {
+ puts ("could not write test strings into file");
+ unlink (temp_filename);
+ exit (1);
+ }
+}
+
+volatile int chk_fail_ok;
+jmp_buf chk_fail_buf;
+
+static void
+handler (int sig)
+{
+ if (chk_fail_ok)
+ {
+ chk_fail_ok = 0;
+ longjmp (chk_fail_buf, 1);
+ }
+ else
+ _exit (127);
+}
+
+char buf[10];
+volatile size_t l0;
+volatile char *p;
+const char *str1 = "JIHGFEDCBA";
+const char *str2 = "F";
+const char *str3 = "%s%n%s%n";
+const char *str4 = "Hello, ";
+const char *str5 = "World!\n";
+char buf2[10] = "%s";
+int num1 = 67;
+int num2 = 987654;
+
+#define FAIL() \
+ do { printf ("Failure on line %d\n", __LINE__); ret = 1; } while (0)
+#define CHK_FAIL_START \
+ chk_fail_ok = 1; \
+ if (! setjmp (chk_fail_buf)) \
+ {
+#define CHK_FAIL_END \
+ chk_fail_ok = 0; \
+ FAIL (); \
+ ret = 1; \
+ }
+#if __USE_FORTIFY_LEVEL >= 2
+#define CHK_FAIL2_START CHK_FAIL_START
+#define CHK_FAIL2_END CHK_FAIL_END
+#else
+#define CHK_FAIL2_START
+#define CHK_FAIL2_END
+#endif
+
+static int
+do_test (void)
+{
+ int ret = 0;
+ struct sigaction sa;
+ sa.sa_handler = handler;
+ sa.sa_flags = 0;
+ sigemptyset (&sa.sa_mask);
+
+ sigaction (SIGABRT, &sa, NULL);
+
+ struct A { char buf1[9]; char buf2[1]; } a;
+
+ printf ("Test checking routines at fortify level %d\n",
+#ifdef __USE_FORTIFY_LEVEL
+ (int) __USE_FORTIFY_LEVEL
+#else
+ 0
+#endif
+ );
+
+ /* These ops can be done without runtime checking of object size. */
+ memcpy (buf, "abcdefghij", 10);
+ memmove (buf + 1, buf, 9);
+ if (memcmp (buf, "aabcdefghi", 10))
+ FAIL ();
+
+ if (mempcpy (buf + 5, "abcde", 5) != buf + 10 || memcmp (buf, "aabcdabcde", 10))
+ FAIL ();
+
+ memset (buf + 8, 'j', 2);
+ if (memcmp (buf, "aabcdabcjj", 10))
+ FAIL ();
+
+ strcpy (buf + 4, "EDCBA");
+ if (memcmp (buf, "aabcEDCBA", 10))
+ FAIL ();
+
+ if (stpcpy (buf + 8, "F") != buf + 9 || memcmp (buf, "aabcEDCBF", 10))
+ FAIL ();
+
+ strncpy (buf + 6, "X", 4);
+ if (memcmp (buf, "aabcEDX\0\0", 10))
+ FAIL ();
+
+ if (sprintf (buf + 7, "%s", "67") != 2 || memcmp (buf, "aabcEDX67", 10))
+ FAIL ();
+
+ if (snprintf (buf + 7, 3, "%s", "987654") != 6
+ || memcmp (buf, "aabcEDX98", 10))
+ FAIL ();
+
+ /* These ops need runtime checking, but shouldn't __chk_fail. */
+ memcpy (buf, "abcdefghij", l0 + 10);
+ memmove (buf + 1, buf, l0 + 9);
+ if (memcmp (buf, "aabcdefghi", 10))
+ FAIL ();
+
+ if (mempcpy (buf + 5, "abcde", l0 + 5) != buf + 10 || memcmp (buf, "aabcdabcde", 10))
+ FAIL ();
+
+ memset (buf + 8, 'j', l0 + 2);
+ if (memcmp (buf, "aabcdabcjj", 10))
+ FAIL ();
+
+ strcpy (buf + 4, str1 + 5);
+ if (memcmp (buf, "aabcEDCBA", 10))
+ FAIL ();
+
+ if (stpcpy (buf + 8, str2) != buf + 9 || memcmp (buf, "aabcEDCBF", 10))
+ FAIL ();
+
+ strncpy (buf + 6, "X", l0 + 4);
+ if (memcmp (buf, "aabcEDX\0\0", 10))
+ FAIL ();
+
+ if (sprintf (buf + 7, "%d", num1) != 2 || memcmp (buf, "aabcEDX67", 10))
+ FAIL ();
+
+ if (snprintf (buf + 7, 3, "%d", num2) != 6 || memcmp (buf, "aabcEDX98", 10))
+ FAIL ();
+
+ buf[l0 + 8] = '\0';
+ strcat (buf, "A");
+ if (memcmp (buf, "aabcEDX9A", 10))
+ FAIL ();
+
+ buf[l0 + 7] = '\0';
+ strncat (buf, "ZYXWV", l0 + 2);
+ if (memcmp (buf, "aabcEDXZY", 10))
+ FAIL ();
+
+ memcpy (a.buf1, "abcdefghij", l0 + 10);
+ memmove (a.buf1 + 1, a.buf1, l0 + 9);
+ if (memcmp (a.buf1, "aabcdefghi", 10))
+ FAIL ();
+
+ if (mempcpy (a.buf1 + 5, "abcde", l0 + 5) != a.buf1 + 10
+ || memcmp (a.buf1, "aabcdabcde", 10))
+ FAIL ();
+
+ memset (a.buf1 + 8, 'j', l0 + 2);
+ if (memcmp (a.buf1, "aabcdabcjj", 10))
+ FAIL ();
+
+#if __USE_FORTIFY_LEVEL < 2
+ /* The following tests are supposed to crash with -D_FORTIFY_SOURCE=2
+ and sufficient GCC support, as the string operations overflow
+ from a.buf1 into a.buf2. */
+ strcpy (a.buf1 + 4, str1 + 5);
+ if (memcmp (a.buf1, "aabcEDCBA", 10))
+ FAIL ();
+
+ if (stpcpy (a.buf1 + 8, str2) != a.buf1 + 9 || memcmp (a.buf1, "aabcEDCBF", 10))
+ FAIL ();
+
+ strncpy (a.buf1 + 6, "X", l0 + 4);
+ if (memcmp (a.buf1, "aabcEDX\0\0", 10))
+ FAIL ();
+
+ if (sprintf (a.buf1 + 7, "%d", num1) != 2 || memcmp (a.buf1, "aabcEDX67", 10))
+ FAIL ();
+
+ if (snprintf (a.buf1 + 7, 3, "%d", num2) != 6
+ || memcmp (a.buf1, "aabcEDX98", 10))
+ FAIL ();
+
+ a.buf1[l0 + 8] = '\0';
+ strcat (a.buf1, "A");
+ if (memcmp (a.buf1, "aabcEDX9A", 10))
+ FAIL ();
+
+ a.buf1[l0 + 7] = '\0';
+ strncat (a.buf1, "ZYXWV", l0 + 2);
+ if (memcmp (a.buf1, "aabcEDXZY", 10))
+ FAIL ();
+
+#endif
+
+#if __USE_FORTIFY_LEVEL >= 1
+ /* Now check if all buffer overflows are caught at runtime. */
+
+ CHK_FAIL_START
+ memcpy (buf + 1, "abcdefghij", l0 + 10);
+ CHK_FAIL_END
+
+ CHK_FAIL_START
+ memmove (buf + 2, buf + 1, l0 + 9);
+ CHK_FAIL_END
+
+ CHK_FAIL_START
+ p = mempcpy (buf + 6, "abcde", l0 + 5);
+ CHK_FAIL_END
+
+ CHK_FAIL_START
+ memset (buf + 9, 'j', l0 + 2);
+ CHK_FAIL_END
+
+ CHK_FAIL_START
+ strcpy (buf + 5, str1 + 5);
+ CHK_FAIL_END
+
+ CHK_FAIL_START
+ p = stpcpy (buf + 9, str2);
+ CHK_FAIL_END
+
+ CHK_FAIL_START
+ strncpy (buf + 7, "X", l0 + 4);
+ CHK_FAIL_END
+
+ CHK_FAIL_START
+ sprintf (buf + 8, "%d", num1);
+ CHK_FAIL_END
+
+ CHK_FAIL_START
+ snprintf (buf + 8, l0 + 3, "%d", num2);
+ CHK_FAIL_END
+
+ memcpy (buf, str1 + 2, l0 + 9);
+ CHK_FAIL_START
+ strcat (buf, "AB");
+ CHK_FAIL_END
+
+ memcpy (buf, str1 + 3, l0 + 8);
+ CHK_FAIL_START
+ strncat (buf, "ZYXWV", l0 + 3);
+ CHK_FAIL_END
+
+ CHK_FAIL_START
+ memcpy (a.buf1 + 1, "abcdefghij", l0 + 10);
+ CHK_FAIL_END
+
+ CHK_FAIL_START
+ memmove (a.buf1 + 2, a.buf1 + 1, l0 + 9);
+ CHK_FAIL_END
+
+ CHK_FAIL_START
+ p = mempcpy (a.buf1 + 6, "abcde", l0 + 5);
+ CHK_FAIL_END
+
+ CHK_FAIL_START
+ memset (a.buf1 + 9, 'j', l0 + 2);
+ CHK_FAIL_END
+
+#if __USE_FORTIFY_LEVEL >= 2
+# define O 0
+#else
+# define O 1
+#endif
+
+ CHK_FAIL_START
+ strcpy (a.buf1 + (O + 4), str1 + 5);
+ CHK_FAIL_END
+
+ CHK_FAIL_START
+ p = stpcpy (a.buf1 + (O + 8), str2);
+ CHK_FAIL_END
+
+ CHK_FAIL_START
+ strncpy (a.buf1 + (O + 6), "X", l0 + 4);
+ CHK_FAIL_END
+
+ CHK_FAIL_START
+ sprintf (a.buf1 + (O + 7), "%d", num1);
+ CHK_FAIL_END
+
+ CHK_FAIL_START
+ snprintf (a.buf1 + (O + 7), l0 + 3, "%d", num2);
+ CHK_FAIL_END
+
+ memcpy (a.buf1, str1 + (3 - O), l0 + 8 + O);
+ CHK_FAIL_START
+ strcat (a.buf1, "AB");
+ CHK_FAIL_END
+
+ memcpy (a.buf1, str1 + (4 - O), l0 + 7 + O);
+ CHK_FAIL_START
+ strncat (a.buf1, "ZYXWV", l0 + 3);
+ CHK_FAIL_END
+#endif
+
+ /* Now checks for %n protection. */
+
+ /* Constant literals passed directly are always ok
+ (even with warnings about possible bugs from GCC). */
+ int n1, n2;
+ if (sprintf (buf, "%s%n%s%n", str2, &n1, str2, &n2) != 2
+ || n1 != 1 || n2 != 2)
+ FAIL ();
+
+ /* In this case the format string is not known at compile time,
+ but resides in read-only memory, so is ok. */
+ if (snprintf (buf, 4, str3, str2, &n1, str2, &n2) != 2
+ || n1 != 1 || n2 != 2)
+ FAIL ();
+
+ strcpy (buf2 + 2, "%n%s%n");
+ /* When the format string is writable and contains %n,
+ with -D_FORTIFY_SOURCE=2 it causes __chk_fail. */
+ CHK_FAIL2_START
+ if (sprintf (buf, buf2, str2, &n1, str2, &n1) != 2)
+ FAIL ();
+ CHK_FAIL2_END
+
+ CHK_FAIL2_START
+ if (snprintf (buf, 3, buf2, str2, &n1, str2, &n1) != 2)
+ FAIL ();
+ CHK_FAIL2_END
+
+ /* But if there is no %n, even writable format string
+ should work. */
+ buf2[6] = '\0';
+ if (sprintf (buf, buf2 + 4, str2) != 1)
+ FAIL ();
+
+ /* Constant literals passed directly are always ok
+ (even with warnings about possible bugs from GCC). */
+ if (printf ("%s%n%s%n", str4, &n1, str5, &n2) != 14
+ || n1 != 7 || n2 != 14)
+ FAIL ();
+
+ /* In this case the format string is not known at compile time,
+ but resides in read-only memory, so is ok. */
+ if (printf (str3, str4, &n1, str5, &n2) != 14
+ || n1 != 7 || n2 != 14)
+ FAIL ();
+
+ strcpy (buf2 + 2, "%n%s%n");
+ /* When the format string is writable and contains %n,
+ with -D_FORTIFY_SOURCE=2 it causes __chk_fail. */
+ CHK_FAIL2_START
+ if (printf (buf2, str4, &n1, str5, &n1) != 14)
+ FAIL ();
+ CHK_FAIL2_END
+
+ /* But if there is no %n, even writable format string
+ should work. */
+ buf2[6] = '\0';
+ if (printf (buf2 + 4, str5) != 7)
+ FAIL ();
+
+ FILE *fp = stdout;
+
+ /* Constant literals passed directly are always ok
+ (even with warnings about possible bugs from GCC). */
+ if (fprintf (fp, "%s%n%s%n", str4, &n1, str5, &n2) != 14
+ || n1 != 7 || n2 != 14)
+ FAIL ();
+
+ /* In this case the format string is not known at compile time,
+ but resides in read-only memory, so is ok. */
+ if (fprintf (fp, str3, str4, &n1, str5, &n2) != 14
+ || n1 != 7 || n2 != 14)
+ FAIL ();
+
+ strcpy (buf2 + 2, "%n%s%n");
+ /* When the format string is writable and contains %n,
+ with -D_FORTIFY_SOURCE=2 it causes __chk_fail. */
+ CHK_FAIL2_START
+ if (fprintf (fp, buf2, str4, &n1, str5, &n1) != 14)
+ FAIL ();
+ CHK_FAIL2_END
+
+ /* But if there is no %n, even writable format string
+ should work. */
+ buf2[6] = '\0';
+ if (fprintf (fp, buf2 + 4, str5) != 7)
+ FAIL ();
+
+ if (freopen (temp_filename, "r", stdin) == NULL)
+ {
+ puts ("could not open temporary file");
+ exit (1);
+ }
+
+ if (gets (buf) != buf || memcmp (buf, "abcdefgh", 9))
+ FAIL ();
+ if (gets (buf) != buf || memcmp (buf, "ABCDEFGHI", 10))
+ FAIL ();
+
+#if __USE_FORTIFY_LEVEL >= 1
+ CHK_FAIL_START
+ if (gets (buf) != buf)
+ FAIL ();
+ CHK_FAIL_END
+#endif
+
+ if (freopen (temp_filename, "r", stdin) == NULL)
+ {
+ puts ("could not open temporary file");
+ exit (1);
+ }
+
+ if (fseek (stdin, 9 + 10 + 11, SEEK_SET))
+ {
+ puts ("could not seek in test file");
+ exit (1);
+ }
+
+#if __USE_FORTIFY_LEVEL >= 1
+ CHK_FAIL_START
+ if (gets (buf) != buf)
+ FAIL ();
+ CHK_FAIL_END
+#endif
+
+ return ret;
+}
diff --git a/debug/tst-chk2.c b/debug/tst-chk2.c
new file mode 100644
index 0000000000..be37ce2d22
--- /dev/null
+++ b/debug/tst-chk2.c
@@ -0,0 +1,2 @@
+#define _FORTIFY_SOURCE 1
+#include "tst-chk1.c"
diff --git a/debug/tst-chk3.c b/debug/tst-chk3.c
new file mode 100644
index 0000000000..38b8e4fb36
--- /dev/null
+++ b/debug/tst-chk3.c
@@ -0,0 +1,2 @@
+#define _FORTIFY_SOURCE 2
+#include "tst-chk1.c"
diff --git a/debug/vfprintf_chk.c b/debug/vfprintf_chk.c
new file mode 100644
index 0000000000..a9e107d8e5
--- /dev/null
+++ b/debug/vfprintf_chk.c
@@ -0,0 +1,42 @@
+/* Copyright (C) 1991, 1995, 1996, 1997, 2001, 2004
+ 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, write to the Free
+ Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+ 02111-1307 USA. */
+
+#include <stdarg.h>
+#include <stdio.h>
+#include "../libio/libioP.h"
+
+
+/* Write formatted output to FP from the format string FORMAT. */
+int
+__vfprintf_chk (FILE *fp, int flag, const char *format, va_list ap)
+{
+ int done;
+
+ _IO_acquire_lock (fp);
+ if (flag > 0)
+ fp->_flags2 |= _IO_FLAGS2_CHECK_PERCENT_N;
+
+ done = vfprintf (fp, format, ap);
+
+ if (flag > 0)
+ fp->_flags2 &= ~_IO_FLAGS2_CHECK_PERCENT_N;
+ _IO_release_lock (fp);
+
+ return done;
+}
diff --git a/debug/vprintf_chk.c b/debug/vprintf_chk.c
new file mode 100644
index 0000000000..f477f15411
--- /dev/null
+++ b/debug/vprintf_chk.c
@@ -0,0 +1,42 @@
+/* Copyright (C) 1991, 1995, 1996, 1997, 2001, 2004
+ 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, write to the Free
+ Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+ 02111-1307 USA. */
+
+#include <stdarg.h>
+#include <stdio.h>
+#include "../libio/libioP.h"
+
+
+/* Write formatted output to stdout from the format string FORMAT. */
+int
+__vprintf_chk (int flag, const char *format, va_list ap)
+{
+ int done;
+
+ _IO_acquire_lock (stdout);
+ if (flag > 0)
+ stdout->_flags2 |= _IO_FLAGS2_CHECK_PERCENT_N;
+
+ done = vfprintf (stdout, format, ap);
+
+ if (flag > 0)
+ stdout->_flags2 &= ~_IO_FLAGS2_CHECK_PERCENT_N;
+ _IO_release_lock (stdout);
+
+ return done;
+}
diff --git a/debug/vsnprintf_chk.c b/debug/vsnprintf_chk.c
new file mode 100644
index 0000000000..850cd5af5a
--- /dev/null
+++ b/debug/vsnprintf_chk.c
@@ -0,0 +1,70 @@
+/* Copyright (C) 1991, 1995, 1997, 1998, 2004 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, write to the Free
+ Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+ 02111-1307 USA. */
+
+#include <stdarg.h>
+#include <stdio.h>
+#include "../libio/libioP.h"
+#include "../libio/strfile.h"
+
+extern const struct _IO_jump_t _IO_strn_jumps attribute_hidden;
+
+/* Write formatted output into S, according to the format
+ string FORMAT, writing no more than MAXLEN characters. */
+/* VARARGS5 */
+int
+__vsnprintf_chk (char *s, size_t maxlen, int flags, size_t slen,
+ const char *format, va_list args)
+{
+ /* XXX Maybe for less strict version do not fail immediately.
+ Though, maxlen is supposed to be the size of buffer pointed
+ to by s, so a conforming program can't pass such maxlen
+ to *snprintf. */
+ if (__builtin_expect (slen < maxlen, 0))
+ __chk_fail ();
+
+ _IO_strnfile sf;
+ int ret;
+#ifdef _IO_MTSAFE_IO
+ sf.f._sbf._f._lock = NULL;
+#endif
+
+ /* We need to handle the special case where MAXLEN is 0. Use the
+ overflow buffer right from the start. */
+ if (maxlen == 0)
+ {
+ s = sf.overflow_buf;
+ maxlen = sizeof (sf.overflow_buf);
+ }
+
+ _IO_no_init (&sf.f._sbf._f, _IO_USER_LOCK, -1, NULL, NULL);
+ _IO_JUMPS ((struct _IO_FILE_plus *) &sf.f._sbf) = &_IO_strn_jumps;
+ s[0] = '\0';
+
+ /* For flags > 0 (i.e. __USE_FORTIFY_LEVEL > 1) request that %n
+ can only come from read-only format strings. */
+ if (flags > 0)
+ sf.f._sbf._f._flags2 |= _IO_FLAGS2_CHECK_PERCENT_N;
+
+ _IO_str_init_static_internal (&sf.f, s, maxlen - 1, s);
+ ret = INTUSE(_IO_vfprintf) ((_IO_FILE *) &sf.f._sbf, format, args);
+
+ if (sf.f._sbf._f._IO_buf_base != sf.overflow_buf)
+ *sf.f._sbf._f._IO_write_ptr = '\0';
+ return ret;
+}
+libc_hidden_def (__vsnprintf_chk)
diff --git a/debug/vsprintf_chk.c b/debug/vsprintf_chk.c
new file mode 100644
index 0000000000..83383286da
--- /dev/null
+++ b/debug/vsprintf_chk.c
@@ -0,0 +1,91 @@
+/* Copyright (C) 1994, 1997, 1999-2003, 2004 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, write to the Free
+ Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+ 02111-1307 USA. */
+
+#include <stdarg.h>
+#include <stdio.h>
+#include "../libio/libioP.h"
+#include "../libio/strfile.h"
+
+
+static int _IO_str_chk_overflow (_IO_FILE *fp, int c) __THROW;
+
+static int
+_IO_str_chk_overflow (fp, c)
+ _IO_FILE *fp;
+ int c;
+{
+ /* When we come to here this means the user supplied buffer is
+ filled. */
+ __chk_fail ();
+}
+
+
+static const struct _IO_jump_t _IO_str_chk_jumps =
+{
+ JUMP_INIT_DUMMY,
+ JUMP_INIT(finish, _IO_str_finish),
+ JUMP_INIT(overflow, _IO_str_chk_overflow),
+ JUMP_INIT(underflow, INTUSE(_IO_str_underflow)),
+ JUMP_INIT(uflow, INTUSE(_IO_default_uflow)),
+ JUMP_INIT(pbackfail, INTUSE(_IO_str_pbackfail)),
+ JUMP_INIT(xsputn, INTUSE(_IO_default_xsputn)),
+ JUMP_INIT(xsgetn, INTUSE(_IO_default_xsgetn)),
+ JUMP_INIT(seekoff, INTUSE(_IO_str_seekoff)),
+ JUMP_INIT(seekpos, _IO_default_seekpos),
+ JUMP_INIT(setbuf, _IO_default_setbuf),
+ JUMP_INIT(sync, _IO_default_sync),
+ JUMP_INIT(doallocate, INTUSE(_IO_default_doallocate)),
+ JUMP_INIT(read, _IO_default_read),
+ JUMP_INIT(write, _IO_default_write),
+ JUMP_INIT(seek, _IO_default_seek),
+ JUMP_INIT(close, _IO_default_close),
+ JUMP_INIT(stat, _IO_default_stat),
+ JUMP_INIT(showmanyc, _IO_default_showmanyc),
+ JUMP_INIT(imbue, _IO_default_imbue)
+};
+
+
+int
+__vsprintf_chk (char *s, int flags, size_t slen, const char *format,
+ va_list args)
+{
+ _IO_strfile f;
+ int ret;
+#ifdef _IO_MTSAFE_IO
+ f._sbf._f._lock = NULL;
+#endif
+
+ if (slen == 0)
+ __chk_fail ();
+
+ _IO_no_init (&f._sbf._f, _IO_USER_LOCK, -1, NULL, NULL);
+ _IO_JUMPS ((struct _IO_FILE_plus *) &f._sbf) = &_IO_str_chk_jumps;
+ s[0] = '\0';
+ _IO_str_init_static_internal (&f, s, slen - 1, s);
+
+ /* For flags > 0 (i.e. __USE_FORTIFY_LEVEL > 1) request that %n
+ can only come from read-only format strings. */
+ if (flags > 0)
+ f._sbf._f._flags2 |= _IO_FLAGS2_CHECK_PERCENT_N;
+
+ ret = INTUSE(_IO_vfprintf) ((_IO_FILE *) &f._sbf, format, args);
+
+ *f._sbf._f._IO_write_ptr = '\0';
+ return ret;
+}
+libc_hidden_def (__vsprintf_chk)
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-05 17:40:01 +0000