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3a50811c2f
* rt/Makefile (headers): Add bits/mqueue2.h. * rt/mqueue.h: Include bits/mqueue2.h if -D_FORTIFY_SOURCE=2, optimizing with GCC and __va_arg_pack_len is defined. * rt/bits/mqueue2.h: New file. * rt/mq_open.c (__mq_open): Renamed from mq_open. (mq_open): New strong_alias. (__mq_open_2): New function. * sysdeps/unix/sysv/linux/mq_open.c (__mq_open): Renamed from mq_open. (mq_open): New strong_alias. (__mq_open_2): New function. * debug/Versions (libc): Export __fortify_fail@@GLIBC_PRIVATE. * Versions.def (librt): Add GLIBC_2.7 version. * debug/fortify_fail.c (__fortify_fail): Add libc_hidden_def. * include/stdio.h (__fortify_fail): Add libc_hidden_proto. * misc/sys/cdefs.h (__errordecl, __va_arg_pack_len): Define. * io/fcntl.h: Include bits/fcntl2.h when __va_arg_pack_len is defined rather than when not C++. * io/bits/fcntl2.h (__open_alias, __open64_alias, __openat_alias, __openat64_alias): New redirects. (__open_too_many_args, __open_missing_mode, __open64_too_many_args, __open64_missing_mode, __openat_too_many_args, __openat_missing_mode, __openat64_too_many_args, __openat64_missing_mode): New __errordecls. (open, open64, openat, openat64): Rewrite as __extern_always_inline functions instead of function-like macros.
174 lines
5.5 KiB
C
174 lines
5.5 KiB
C
/* Checking macros for fcntl functions.
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Copyright (C) 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 _FCNTL_H
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# error "Never include <bits/fcntl2.h> directly; use <fcntl.h> instead."
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#endif
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/* Check that calls to open and openat with O_CREAT set have an
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appropriate third/fourth parameter. */
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#ifndef __USE_FILE_OFFSET64
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extern int __open_2 (__const char *__path, int __oflag) __nonnull ((1));
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extern int __REDIRECT (__open_alias, (__const char *__path, int __oflag, ...),
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open) __nonnull ((1));
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#else
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extern int __REDIRECT (__open_2, (__const char *__path, int __oflag),
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__open64_2) __nonnull ((1));
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extern int __REDIRECT (__open_alias, (__const char *__path, int __oflag, ...),
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open64) __nonnull ((1));
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#endif
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__errordecl (__open_too_many_args,
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"open can be called either with 2 or 3 arguments, not more");
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__errordecl (__open_missing_mode,
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"open with O_CREAT in second argument needs 3 arguments");
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__extern_always_inline int
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open (__const char *__path, int __oflag, ...)
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{
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if (__va_arg_pack_len () > 1)
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__open_too_many_args ();
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if (__builtin_constant_p (__oflag))
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{
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if ((__oflag & O_CREAT) != 0 && __va_arg_pack_len () < 1)
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{
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__open_missing_mode ();
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return __open_2 (__path, __oflag);
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}
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return __open_alias (__path, __oflag, __va_arg_pack ());
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}
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if (__va_arg_pack_len () < 1)
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return __open_2 (__path, __oflag);
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return __open_alias (__path, __oflag, __va_arg_pack ());
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}
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#ifdef __USE_LARGEFILE64
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extern int __open64_2 (__const char *__path, int __oflag) __nonnull ((1));
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extern int __REDIRECT (__open64_alias, (__const char *__path, int __oflag,
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...), open64) __nonnull ((1));
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__errordecl (__open64_too_many_args,
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"open64 can be called either with 2 or 3 arguments, not more");
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__errordecl (__open64_missing_mode,
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"open64 with O_CREAT in second argument needs 3 arguments");
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__extern_always_inline int
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open64 (__const char *__path, int __oflag, ...)
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{
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if (__va_arg_pack_len () > 1)
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__open64_too_many_args ();
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if (__builtin_constant_p (__oflag))
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{
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if ((__oflag & O_CREAT) != 0 && __va_arg_pack_len () < 1)
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{
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__open64_missing_mode ();
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return __open64_2 (__path, __oflag);
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}
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return __open64_alias (__path, __oflag, __va_arg_pack ());
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}
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if (__va_arg_pack_len () < 1)
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return __open64_2 (__path, __oflag);
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return __open64_alias (__path, __oflag, __va_arg_pack ());
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}
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#endif
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#ifdef __USE_ATFILE
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# ifndef __USE_FILE_OFFSET64
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extern int __openat_2 (int __fd, __const char *__path, int __oflag)
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__nonnull ((2));
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extern int __REDIRECT (__openat_alias, (int __fd, __const char *__path,
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int __oflag, ...), openat)
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__nonnull ((2));
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# else
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extern int __REDIRECT (__openat_2, (int __fd, __const char *__path,
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int __oflag), __openat64_2)
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__nonnull ((2));
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extern int __REDIRECT (__openat_alias, (int __fd, __const char *__path,
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int __oflag, ...), openat64)
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__nonnull ((2));
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# endif
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__errordecl (__openat_too_many_args,
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"openat can be called either with 3 or 4 arguments, not more");
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__errordecl (__openat_missing_mode,
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"openat with O_CREAT in third argument needs 4 arguments");
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__extern_always_inline int
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openat (int __fd, __const char *__path, int __oflag, ...)
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{
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if (__va_arg_pack_len () > 1)
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__openat_too_many_args ();
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if (__builtin_constant_p (__oflag))
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{
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if ((__oflag & O_CREAT) != 0 && __va_arg_pack_len () < 1)
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{
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__openat_missing_mode ();
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return __openat_2 (__fd, __path, __oflag);
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}
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return __openat_alias (__fd, __path, __oflag, __va_arg_pack ());
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}
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if (__va_arg_pack_len () < 1)
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return __openat_2 (__fd, __path, __oflag);
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return __openat_alias (__fd, __path, __oflag, __va_arg_pack ());
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}
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# ifdef __USE_LARGEFILE64
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extern int __openat64_2 (int __fd, __const char *__path, int __oflag)
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__nonnull ((2));
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extern int __REDIRECT (__openat64_alias, (int __fd, __const char *__path,
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int __oflag, ...), openat64)
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__nonnull ((2));
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__errordecl (__openat64_too_many_args,
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"openat64 can be called either with 3 or 4 arguments, not more");
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__errordecl (__openat64_missing_mode,
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"openat64 with O_CREAT in third argument needs 4 arguments");
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__extern_always_inline int
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openat64 (int __fd, __const char *__path, int __oflag, ...)
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{
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if (__va_arg_pack_len () > 1)
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__openat64_too_many_args ();
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if (__builtin_constant_p (__oflag))
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{
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if ((__oflag & O_CREAT) != 0 && __va_arg_pack_len () < 1)
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{
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__openat64_missing_mode ();
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return __openat64_2 (__fd, __path, __oflag);
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}
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return __openat64_alias (__fd, __path, __oflag, __va_arg_pack ());
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}
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if (__va_arg_pack_len () < 1)
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return __openat64_2 (__fd, __path, __oflag);
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return __openat64_alias (__fd, __path, __oflag, __va_arg_pack ());
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}
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# endif
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#endif
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