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with __warning__/__error__ attributes. (__warnattr): Define. * stdlib/bits/stdlib.h (__realpath_chk_warn, __ptsname_r_chk_warn, __mbstowcs_chk_warn, __wcstombs_chk_warn): New aliases with __warnattr. (realpath, ptsname_r, mbstowcs, wcstombs): Call __*_chk_warn instead of __*_chk if compile time detectable overflow is found. * libio/bits/stdio2.h (__fgets_chk_warn, __fread_chk_warn, __fgets_unlocked_chk_warn, __fread_unlocked_chk_warn): New aliases with __warnattr. (fgets, fread, fgets_unlocked, fread_unlocked): Call __*_chk_warn instead of __*_chk if compile time detectable overflow is found. (__gets_alias): Rename to... (__gets_warn): ... this. Add __warnattr. (gets): Call __gets_warn instead of __gets_alias. * socket/bits/socket2.h (__recv_chk_warn, __recvfrom_chk_warn): New aliases with __warnattr. (recv, recvfrom): Call __*_chk_warn instead of __*_chk if compile time detectable overflow is found. * posix/bits/unistd.h (__read_chk_warn, __pread_chk_warn, __pread64_chk_warn, __readlink_chk_warn, __readlinkat_chk_warn, __getcwd_chk_warn, __confstr_chk_warn, __getgroups_chk_warn, __ttyname_r_chk_warn, __getlogin_r_chk_warn, __gethostname_chk_warn, __getdomainname_chk_warn): New aliases with __warnattr. (read, pread, pread64, readlink, readlinkat, getcwd, confstr, getgroups, ttyname_r, getlogin_r, gethostname, getdomainname): Call __*_chk_warn instead of __*_chk if compile time detectable overflow is found. (__getgroups_chk): Rename argument to __listlen from listlen. (__getwd_alias): Rename to... (__getwd_warn): ... this. Add __warnattr. (getwd): Call __getwd_warn instead of __getwd_alias. * wcsmbs/bits/wchar2.h (__wmemcpy_chk_warn, __wmemmove_chk_warn, __wmempcpy_chk_warn, __wmemset_chk_warn, __wcsncpy_chk_warn, __wcpncpy_chk_warn, __fgetws_chk_warn, __fgetws_unlocked_chk_warn, __mbsrtowcs_chk_warn, __wcsrtombs_chk_warn, __mbsnrtowcs_chk_warn, __wcsnrtombs_chk_warn): New aliases with __warnattr. (wmemcpy, wmemmove, wmempcpy, wmemset, mbsrtowcs, wcsrtombs, mbsnrtowcs, wcsnrtombs): Call __*_chk_warn instead of __*_chk if compile time detectable overflow is found. (wcsncpy, wcpncpy): Likewise. For constant __n fix check whether to use __*_chk or not. (fgetws, fgetws_unlocked): Divide __bos by sizeof (wchar_t), both in comparisons which function should be called and in __*_chk* arguments. Call __*_chk_warn instead of __*_chk if compile time detectable overflow is found. (swprintf, vswprintf): Divide __bos by sizeof (wchar_t) in __*_chk argument. * debug/tst-chk1.c (do_test): Add a few more tests.
79 lines
3.0 KiB
C
79 lines
3.0 KiB
C
/* Checking macros for socket functions.
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Copyright (C) 2005, 2007 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 _SYS_SOCKET_H
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# error "Never include <bits/socket2.h> directly; use <sys/socket.h> instead."
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#endif
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extern ssize_t __recv_chk (int __fd, void *__buf, size_t __n, size_t __buflen,
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int __flags);
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extern ssize_t __REDIRECT (__recv_alias, (int __fd, void *__buf, size_t __n,
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int __flags), recv);
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extern ssize_t __REDIRECT (__recv_chk_warn,
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(int __fd, void *__buf, size_t __n, size_t __buflen,
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int __flags), __recv_chk)
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__warnattr ("recv called with bigger length than size of destination "
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"buffer");
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__extern_always_inline ssize_t
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recv (int __fd, void *__buf, size_t __n, int __flags)
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{
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if (__bos0 (__buf) != (size_t) -1)
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{
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if (!__builtin_constant_p (__n))
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return __recv_chk (__fd, __buf, __n, __bos0 (__buf), __flags);
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if (__n > __bos0 (__buf))
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return __recv_chk_warn (__fd, __buf, __n, __bos0 (__buf), __flags);
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}
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return __recv_alias (__fd, __buf, __n, __flags);
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}
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extern ssize_t __recvfrom_chk (int __fd, void *__restrict __buf, size_t __n,
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size_t __buflen, int __flags,
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__SOCKADDR_ARG __addr,
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socklen_t *__restrict __addr_len);
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extern ssize_t __REDIRECT (__recvfrom_alias,
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(int __fd, void *__restrict __buf, size_t __n,
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int __flags, __SOCKADDR_ARG __addr,
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socklen_t *__restrict __addr_len), recvfrom);
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extern ssize_t __REDIRECT (__recvfrom_chk_warn,
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(int __fd, void *__restrict __buf, size_t __n,
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size_t __buflen, int __flags,
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__SOCKADDR_ARG __addr,
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socklen_t *__restrict __addr_len), __recvfrom_chk)
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__warnattr ("recvfrom called with bigger length than size of "
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"destination buffer");
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__extern_always_inline ssize_t
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recvfrom (int __fd, void *__restrict __buf, size_t __n, int __flags,
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__SOCKADDR_ARG __addr, socklen_t *__restrict __addr_len)
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{
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if (__bos0 (__buf) != (size_t) -1)
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{
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if (!__builtin_constant_p (__n))
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return __recvfrom_chk (__fd, __buf, __n, __bos0 (__buf), __flags,
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__addr, __addr_len);
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if (__n > __bos0 (__buf))
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return __recvfrom_chk_warn (__fd, __buf, __n, __bos0 (__buf), __flags,
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__addr, __addr_len);
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}
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return __recvfrom_alias (__fd, __buf, __n, __flags, __addr, __addr_len);
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}
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