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Add checking versions of poll and ppoll

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This commit is contained in:
Ulrich Drepper 2012-01-08 11:55:32 -05:00
parent 15cfed3f93
commit d9a216c037
14 changed files with 190 additions and 5 deletions
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14
ChangeLog
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@ -1,5 +1,19 @@
2012-01-08 Ulrich Drepper <drepper@gmail.com>
* debug/Makefile (routines): Add poll_chk and ppoll_chk.
* debug/Versions: Export __pool_chk and __ppoll_chk from libc for
GLIBC_2.16.
* debug/tst-chk1.c: Add poll and ppoll tests.
* io/sys/poll.h: Include bits/poll2.h for _FORTIFY_SOURCE.
* include/sys/poll.h: Add hidden proto for ppoll.
* sysdeps/unix/sysv/linux/ppoll.c: Add hidden def.
* sysdeps/mach/hurd/ppoll.c: Likewise.
* io/ppoll.c: Likewise.
* debug/poll_chk.c: New file.
* debug/ppoll_chk.c: New file.
* include/bits/poll2.h: New file.
* io/bits/poll2.h: New file.
[BZ #1350]
* math/complex.h (CMPLX, CMPLXF, CMPLXL): Define.

3
NEWS
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@ -36,6 +36,9 @@ Version 2.16
* Support for the IA-64 is removed and could live in ports.
* Remove support for anything but ELF binary format
* Checking versions of poll, ppoll added.
Implemented by Ulrich Drepper.
Version 2.15

2
debug/Makefile
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@ -44,7 +44,7 @@ routines = backtrace backtracesyms backtracesymsfd noophooks \
wcstombs_chk asprintf_chk vasprintf_chk dprintf_chk \
vdprintf_chk obprintf_chk \
longjmp_chk ____longjmp_chk \
fdelt_chk \
fdelt_chk poll_chk ppoll_chk \
stack_chk_fail fortify_fail \
$(static-only-routines)
static-only-routines := warning-nop stack_chk_fail_local

3
debug/Versions
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@ -52,6 +52,9 @@ libc {
GLIBC_2.15 {
__fdelt_chk; __fdelt_warn;
}
GLIBC_2.16 {
__poll_chk; __ppoll_chk;
}
GLIBC_PRIVATE {
__fortify_fail;
}

29
debug/poll_chk.c Normal file
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@ -0,0 +1,29 @@
/* Copyright (C) 2012 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 <sys/poll.h>
int
__poll_chk (struct pollfd *fds, nfds_t nfds, int timeout, __SIZE_TYPE__ fdslen)
{
if (fdslen / sizeof (*fds) < nfds)
__chk_fail ();
return __poll (fds, nfds, timeout);
}

30
debug/ppoll_chk.c Normal file
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@ -0,0 +1,30 @@
/* Copyright (C) 2012 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 <sys/poll.h>
int
__ppoll_chk (struct pollfd *fds, nfds_t nfds, const struct timespec *timeout,
const __sigset_t *ss, __SIZE_TYPE__ fdslen)
{
if (fdslen / sizeof (*fds) < nfds)
__chk_fail ();
return ppoll (fds, nfds, timeout, ss);
}

19
debug/tst-chk1.c
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@ -1,4 +1,4 @@
/* Copyright (C) 2004,2005,2006,2007,2008,2011 Free Software Foundation, Inc.
/* Copyright (C) 2004-2008,2011,2012 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Jakub Jelinek <jakub@redhat.com>, 2004.
@ -29,6 +29,7 @@
#include <string.h>
#include <unistd.h>
#include <wchar.h>
#include <sys/poll.h>
#include <sys/select.h>
#include <sys/socket.h>
#include <sys/un.h>
@ -1476,5 +1477,21 @@ do_test (void)
CHK_FAIL_END
#endif
struct pollfd fds[1];
fds[0].fd = STDOUT_FILENO;
fds[0].events = POLLOUT;
poll (fds, 1, 0);
#if __USE_FORTIFY_LEVEL >= 1
CHK_FAIL_START
poll (fds, 2, 0);
CHK_FAIL_END
#endif
ppoll (fds, 1, NULL, NULL);
#if __USE_FORTIFY_LEVEL >= 1
CHK_FAIL_START
ppoll (fds, 2, NULL, NULL);
CHK_FAIL_END
#endif
return ret;
}

1
include/bits/poll2.h Normal file
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@ -0,0 +1 @@
#include "../../io/bits/poll2.h"

1
include/sys/poll.h
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@ -4,5 +4,6 @@
extern int __poll (struct pollfd *__fds, unsigned long int __nfds,
int __timeout);
libc_hidden_proto (__poll)
libc_hidden_proto (ppoll)
#endif

78
io/bits/poll2.h Normal file
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@ -0,0 +1,78 @@
/* Checking macros for poll functions.
Copyright (C) 2012 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. */
#ifndef _SYS_POLL_H
# error "Never include <bits/poll2.h> directly; use <sys/poll.h> instead."
#endif
extern int __REDIRECT (__poll_alias, (struct pollfd *__fds, nfds_t __nfds,
int __timeout), poll);
extern int __poll_chk (struct pollfd *__fds, nfds_t __nfds, int __timeout,
__SIZE_TYPE__ __fdslen);
extern int __REDIRECT (__poll_chk_warn, (struct pollfd *__fds, nfds_t __nfds,
int __timeout, __SIZE_TYPE__ __fdslen),
__poll_chk)
__warnattr ("poll called with fds buffer too small file nfds entries");
__extern_always_inline int
poll (struct pollfd *__fds, nfds_t __nfds, int __timeout)
{
if (__bos (__fds) != (__SIZE_TYPE__) -1)
{
if (! __builtin_constant_p (__nfds))
return __poll_chk (__fds, __nfds, __timeout, __bos (__fds));
else if (__bos (__fds) / sizeof (*__fds) < __nfds)
return __poll_chk_warn (__fds, __nfds, __timeout, __bos (__fds));
}
return __poll_alias (__fds, __nfds, __timeout);
}
#ifdef __USE_GNU
extern int __REDIRECT (__ppoll_alias, (struct pollfd *__fds, nfds_t __nfds,
const struct timespec *__timeout,
const __sigset_t *__ss), ppoll);
extern int __ppoll_chk (struct pollfd *__fds, nfds_t __nfds,
const struct timespec *__timeout,
const __sigset_t *__ss, __SIZE_TYPE__ __fdslen);
extern int __REDIRECT (__ppoll_chk_warn, (struct pollfd *__fds, nfds_t __nfds,
const struct timespec *__timeout,
const __sigset_t *__ss,
__SIZE_TYPE__ __fdslen),
__ppoll_chk)
__warnattr ("ppoll called with fds buffer too small file nfds entries");
__extern_always_inline int
ppoll (struct pollfd *__fds, nfds_t __nfds, const struct timespec *__timeout,
const __sigset_t *__ss)
{
if (__bos (__fds) != (__SIZE_TYPE__) -1)
{
if (! __builtin_constant_p (__nfds))
return __ppoll_chk (__fds, __nfds, __timeout, __ss, __bos (__fds));
else if (__bos (__fds) / sizeof (*__fds) < __nfds)
return __ppoll_chk_warn (__fds, __nfds, __timeout, __ss,
__bos (__fds));
}
return __ppoll_alias (__fds, __nfds, __timeout, __ss);
}
#endif

3
io/ppoll.c
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@ -1,4 +1,4 @@
/* Copyright (C) 2006 Free Software Foundation, Inc.
/* Copyright (C) 2006, 2012 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Ulrich Drepper <drepper@redhat.com>, 2006.
@ -73,4 +73,5 @@ ppoll (struct pollfd *fds, nfds_t nfds, const struct timespec *timeout,
#ifndef ppoll
/* __poll handles cancellation. */
LIBC_CANCEL_HANDLED ();
libc_hidden_def (ppoll);
#endif

6
io/sys/poll.h
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@ -71,4 +71,10 @@ extern int ppoll (struct pollfd *__fds, nfds_t __nfds,
__END_DECLS
/* Define some inlines helping to catch common problems. */
#if __USE_FORTIFY_LEVEL > 0 && defined __extern_always_inline
# include <bits/poll2.h>
#endif
#endif /* sys/poll.h */

3
sysdeps/mach/hurd/ppoll.c
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@ -1,5 +1,5 @@
/* poll file descriptors. Hurd version.
Copyright (C) 2006 Free Software Foundation, Inc.
Copyright (C) 2006, 2012 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
@ -28,3 +28,4 @@ ppoll (struct pollfd *fds, nfds_t nfds,
{
return _hurd_select (nfds, fds, NULL, NULL, NULL, timeout, sigmask);
}
libc_hidden_def (ppoll)

3
sysdeps/unix/sysv/linux/ppoll.c
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@ -1,4 +1,4 @@
/* Copyright (C) 2006, 2007 Free Software Foundation, Inc.
/* Copyright (C) 2006, 2007, 2012 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Ulrich Drepper <drepper@redhat.com>, 2006.
@ -67,6 +67,7 @@ ppoll (struct pollfd *fds, nfds_t nfds, const struct timespec *timeout,
return result;
}
libc_hidden_def (ppoll)
# ifndef __ASSUME_PPOLL
# define ppoll static __generic_ppoll