* stdlib/bits/stdlib.h: New file.
* stdlib/stdlib.h: Include <bits/stdlib.h> if fortification is requested. * Makefile (headers): Add bits/stdlib.h. * include/bits/stdlib.h: New file. * debug/Depend: New file. * debug/ptsname_r_chk.c: New file. * debug/realpath_chk.c: New file. * debug/wctomb_chk.c: New file. * debug/Makefile (routines): Add ptsname_r_chk, realpath_chk, and wctomb_chk. * debug/Versions: Export __ptsname_r_chk, __realpath_chk, and __wctomb_chk. * debug/tst-chk1.c: Add tests for __ptsname_r_chk, __realpath_chk, and __wctomb_chk.
This commit is contained in:
Ulrich Drepper
parent
9d653cd189
commit
b799f91ddd
18
ChangeLog
18
ChangeLog
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@ -1,3 +1,21 @@
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2005-07-12 Ulrich Drepper <drepper@redhat.com>
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* stdlib/bits/stdlib.h: New file.
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* stdlib/stdlib.h: Include <bits/stdlib.h> if fortification is
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requested.
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* Makefile (headers): Add bits/stdlib.h.
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* include/bits/stdlib.h: New file.
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* debug/Depend: New file.
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* debug/ptsname_r_chk.c: New file.
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* debug/realpath_chk.c: New file.
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* debug/wctomb_chk.c: New file.
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* debug/Makefile (routines): Add ptsname_r_chk, realpath_chk, and
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wctomb_chk.
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* debug/Versions: Export __ptsname_r_chk, __realpath_chk, and
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__wctomb_chk.
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* debug/tst-chk1.c: Add tests for __ptsname_r_chk, __realpath_chk, and
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__wctomb_chk.
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2005-07-12 Jakub Jelinek <jakub@redhat.com>
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* sysdeps/unix/sysv/linux/ia64/has_cpuclock.c: Include not-cancel.h.
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@ -0,0 +1 @@
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localedata
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@ -31,7 +31,8 @@ routines = backtrace backtracesyms backtracesymsfd noophooks \
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printf_chk fprintf_chk vprintf_chk vfprintf_chk \
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gets_chk chk_fail readonly-area fgets_chk fgets_u_chk \
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read_chk pread_chk pread64_chk recv_chk recvfrom_chk \
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readlink_chk getwd_chk getcwd_chk stack_chk_fail \
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readlink_chk getwd_chk getcwd_chk realpath_chk ptsname_r_chk \
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wctomb_chk stack_chk_fail \
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$(static-only-routines)
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static-only-routines := warning-nop stack_chk_fail_local
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@ -23,6 +23,7 @@ libc {
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__read_chk; __pread_chk; __pread64_chk;
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__readlink_chk; __getcwd_chk; __getwd_chk;
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__recv_chk; __recvfrom_chk;
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__realpath_chk; __ptsname_r_chk; __wctomb_chk;
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__stack_chk_fail;
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}
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@ -0,0 +1,29 @@
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/* Copyright (C) 2005 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, write to the Free
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Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
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02111-1307 USA. */
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#include <stdlib.h>
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int
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__ptsname_r_chk (int fd, char *buf, size_t buflen, size_t nreal)
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{
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if (buflen > nreal)
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__chk_fail ();
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return __ptsname_r (fd, buf, buflen);
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}
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@ -0,0 +1,60 @@
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/* Copyright (C) 2005 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, write to the Free
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Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
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02111-1307 USA. */
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#include <limits.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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char *
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__realpath_chk (const char *buf, char *resolved, size_t resolvedlen)
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{
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#ifdef PATH_MAX
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if (resolvedlen < PATH_MAX)
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__chk_fail ();
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return __realpath (buf, resolved);
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#else
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long int pathmax =__pathconf (buf, _PC_PATH_MAX);
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if (pathmax != -1)
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{
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/* We do have a fixed limit. */
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if (resolvedlen < pathmax)
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__chk_fail ();
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return __realpath (buf, resolved);
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}
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/* Since there is no fixed limit we check whether the size is large
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enough. */
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char *res = __realpath (buf, NULL);
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if (res != NULL)
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{
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size_t actlen = strlen (res) + 1;
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if (actlen > resolvedlen)
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__chk_fail ();
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memcpy (resolved, res, actlen);
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free (res);
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res = resolved;
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}
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return res;
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#endif
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}
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@ -18,6 +18,7 @@
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02111-1307 USA. */
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#include <fcntl.h>
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#include <locale.h>
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#include <paths.h>
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#include <setjmp.h>
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#include <signal.h>
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@ -791,5 +792,69 @@ do_test (void)
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if (rmdir (fname) != 0)
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FAIL ();
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#if PATH_MAX > 0
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char largebuf[PATH_MAX];
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char *realres = realpath (".", largebuf);
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#endif
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#if __USE_FORTIFY_LEVEL >= 1
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CHK_FAIL_START
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char realbuf[1];
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realres = realpath (".", realbuf);
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CHK_FAIL_END
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#endif
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if (setlocale (LC_ALL, "de_DE.UTF-8") != NULL)
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{
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/* First a simple test. */
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char enough[MB_CUR_MAX];
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if (wctomb (enough, L'A') != 1)
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{
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puts ("first wctomb test failed");
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ret = 1;
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}
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#if __USE_FORTIFY_LEVEL >= 1
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/* We know the wchar_t encoding is ISO 10646. So pick a
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character which has a multibyte representation which does not
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fit. */
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CHK_FAIL_START
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char smallbuf[2];
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if (wctomb (smallbuf, L'\x100') != 2)
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{
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puts ("second wctomb test failed");
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ret = 1;
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}
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CHK_FAIL_END
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#endif
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}
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else
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{
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puts ("cannot set locale");
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ret = 1;
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}
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fd = posix_openpt (O_RDWR);
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if (fd != -1)
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{
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char enough[1000];
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if (ptsname_r (fd, enough, sizeof (enough)) != 0)
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{
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puts ("first ptsname_r failed");
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ret = 1;
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}
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#if __USE_FORTIFY_LEVEL >= 1
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CHK_FAIL_START
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char smallbuf[2];
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if (ptsname_r (fd, smallbuf, sizeof (smallbuf) + 1) == 0)
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{
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puts ("second ptsname_r somehow suceeded");
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ret = 1;
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}
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CHK_FAIL_END
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#endif
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}
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return ret;
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}
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@ -0,0 +1,36 @@
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/* Copyright (C) 2005 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, write to the Free
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Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
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02111-1307 USA. */
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#include <locale.h>
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#include <stdlib.h>
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#include <wcsmbs/wcsmbsload.h>
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extern mbstate_t __no_r_state attribute_hidden; /* Defined in mbtowc.c. */
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int
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__wctomb_chk (char *s, wchar_t wchar, size_t buflen)
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{
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/* We do not have to implement the full wctomb semantics since we
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know that S cannot be NULL when we come here. */
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if (buflen < MB_CUR_MAX)
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__chk_fail ();
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return __wcrtomb (s, wchar, &__no_r_state);
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}
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@ -0,0 +1 @@
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#include <stdlib/bits/stdlib.h>
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@ -23,7 +23,7 @@ subdir := stdlib
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headers := stdlib.h alloca.h monetary.h fmtmsg.h ucontext.h sys/ucontext.h \
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inttypes.h stdint.h bits/wordsize.h bits/wchar.h \
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errno.h sys/errno.h bits/errno.h
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errno.h sys/errno.h bits/errno.h bits/stdlib.h
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routines := \
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atof atoi atol atoll \
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@ -0,0 +1,75 @@
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/* Checking macros for stdlib functions.
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Copyright (C) 2005 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, write to the Free
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Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
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02111-1307 USA. */
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#ifndef _STDLIB_H
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# error "Never include <bits/stdlib.h> directly; use <stdlib.h> instead."
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#endif
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extern char *__realpath_chk (__const char *__restrict __name,
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char *__restrict __resolved,
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size_t __resolvedlen) __THROW __wur;
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extern char *__REDIRECT (__realpath_alias, (__const char *__restrict __name,
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char *__restrict __resolved),
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realpath) __THROW __wur;
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extern __always_inline __wur char *
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realpath (const char *__name, char *__resolved)
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{
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if (__bos (__resolved) != (size_t) -1)
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return __realpath_chk (__name, __resolved, __bos (__resolved));
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return __realpath_alias (__name, __resolved);
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}
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extern int __ptsname_r_chk (int __fd, char *__buf, size_t __buflen,
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size_t __nreal) __THROW __nonnull ((2));
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extern int __REDIRECT (__ptsname_r_alias, (int __fd, char *__buf,
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size_t __buflen), ptsname_r)
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__THROW __nonnull ((2));
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extern __always_inline int
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ptsname_r (int __fd, char *__buf, size_t __buflen)
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{
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if (__bos (__buf) != (size_t) -1
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&& (!__builtin_constant_p (__buflen) || __buflen > __bos (__buf)))
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return __ptsname_r_chk (__fd, __buf, __buflen, __bos (__buf));
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return __ptsname_r_alias (__fd, __buf, __buflen);
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}
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extern int __wctomb_chk (char *__s, wchar_t __wchar, size_t __buflen)
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__THROW __wur;
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extern int __REDIRECT (__wctomb_alias, (char *__s, wchar_t __wchar), wctomb)
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__THROW __wur;
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extern __always_inline __wur int
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wctomb (char *__s, wchar_t __wchar)
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{
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/* We would have to include <limits.h> to get a definition of MB_LEN_MAX.
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But this would only disturb the namespace. So we define our own
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version here. */
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#define __STDLIB_MB_LEN_MAX 16
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#if defined MB_LEN_MAX && MB_LEN_MAX != __STDLIB_MB_LEN_MAX
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# error "Assumed value of MB_LEN_MAX wrong"
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#endif
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if (__bos (__s) != (size_t) -1 && __STDLIB_MB_LEN_MAX > __bos (__s))
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return __wctomb_chk (__s, __wchar, __bos (__s));
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return __wctomb_alias (__s, __wchar);
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}
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@ -961,6 +961,12 @@ extern int getloadavg (double __loadavg[], int __nelem)
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__THROW __nonnull ((1));
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#endif
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/* Define some macros helping to catch buffer overflows. */
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#if __USE_FORTIFY_LEVEL > 0 && !defined __cplusplus
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# include <bits/stdlib.h>
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#endif
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#endif /* don't just need malloc and calloc */
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#undef __need_malloc_and_calloc
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