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fcntl2.h
/* Checking macros for fcntl functions. Copyright (C) 2007-2021 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, see <https://www.gnu.org/licenses/>. */ #ifndef _FCNTL_H # error "Never include <bits/fcntl2.h> directly; use <fcntl.h> instead." #endif /* Check that calls to open and openat with O_CREAT or O_TMPFILE set have an appropriate third/fourth parameter. */ #ifndef __USE_FILE_OFFSET64 extern int __open_2 (const char *__path, int __oflag) __nonnull ((1)); extern int __REDIRECT (__open_alias, (const char *__path, int __oflag, ...), open) __nonnull ((1)); #else extern int __REDIRECT (__open_2, (const char *__path, int __oflag), __open64_2) __nonnull ((1)); extern int __REDIRECT (__open_alias, (const char *__path, int __oflag, ...), open64) __nonnull ((1)); #endif __errordecl (__open_too_many_args, "open can be called either with 2 or 3 arguments, not more"); __errordecl (__open_missing_mode, "open with O_CREAT or O_TMPFILE in second argument needs 3 arguments"); __fortify_function int open (const char *__path, int __oflag, ...) { if (__va_arg_pack_len () > 1) __open_too_many_args (); if (__builtin_constant_p (__oflag)) { if (__OPEN_NEEDS_MODE (__oflag) && __va_arg_pack_len () < 1) { __open_missing_mode (); return __open_2 (__path, __oflag); } return __open_alias (__path, __oflag, __va_arg_pack ()); } if (__va_arg_pack_len () < 1) return __open_2 (__path, __oflag); return __open_alias (__path, __oflag, __va_arg_pack ()); } #ifdef __USE_LARGEFILE64 extern int __open64_2 (const char *__path, int __oflag) __nonnull ((1)); extern int __REDIRECT (__open64_alias, (const char *__path, int __oflag, ...), open64) __nonnull ((1)); __errordecl (__open64_too_many_args, "open64 can be called either with 2 or 3 arguments, not more"); __errordecl (__open64_missing_mode, "open64 with O_CREAT or O_TMPFILE in second argument needs 3 arguments"); __fortify_function int open64 (const char *__path, int __oflag, ...) { if (__va_arg_pack_len () > 1) __open64_too_many_args (); if (__builtin_constant_p (__oflag)) { if (__OPEN_NEEDS_MODE (__oflag) && __va_arg_pack_len () < 1) { __open64_missing_mode (); return __open64_2 (__path, __oflag); } return __open64_alias (__path, __oflag, __va_arg_pack ()); } if (__va_arg_pack_len () < 1) return __open64_2 (__path, __oflag); return __open64_alias (__path, __oflag, __va_arg_pack ()); } #endif #ifdef __USE_ATFILE # ifndef __USE_FILE_OFFSET64 extern int __openat_2 (int __fd, const char *__path, int __oflag) __nonnull ((2)); extern int __REDIRECT (__openat_alias, (int __fd, const char *__path, int __oflag, ...), openat) __nonnull ((2)); # else extern int __REDIRECT (__openat_2, (int __fd, const char *__path, int __oflag), __openat64_2) __nonnull ((2)); extern int __REDIRECT (__openat_alias, (int __fd, const char *__path, int __oflag, ...), openat64) __nonnull ((2)); # endif __errordecl (__openat_too_many_args, "openat can be called either with 3 or 4 arguments, not more"); __errordecl (__openat_missing_mode, "openat with O_CREAT or O_TMPFILE in third argument needs 4 arguments"); __fortify_function int openat (int __fd, const char *__path, int __oflag, ...) { if (__va_arg_pack_len () > 1) __openat_too_many_args (); if (__builtin_constant_p (__oflag)) { if (__OPEN_NEEDS_MODE (__oflag) && __va_arg_pack_len () < 1) { __openat_missing_mode (); return __openat_2 (__fd, __path, __oflag); } return __openat_alias (__fd, __path, __oflag, __va_arg_pack ()); } if (__va_arg_pack_len () < 1) return __openat_2 (__fd, __path, __oflag); return __openat_alias (__fd, __path, __oflag, __va_arg_pack ()); } # ifdef __USE_LARGEFILE64 extern int __openat64_2 (int __fd, const char *__path, int __oflag) __nonnull ((2)); extern int __REDIRECT (__openat64_alias, (int __fd, const char *__path, int __oflag, ...), openat64) __nonnull ((2)); __errordecl (__openat64_too_many_args, "openat64 can be called either with 3 or 4 arguments, not more"); __errordecl (__openat64_missing_mode, "openat64 with O_CREAT or O_TMPFILE in third argument needs 4 arguments"); __fortify_function int openat64 (int __fd, const char *__path, int __oflag, ...) { if (__va_arg_pack_len () > 1) __openat64_too_many_args (); if (__builtin_constant_p (__oflag)) { if (__OPEN_NEEDS_MODE (__oflag) && __va_arg_pack_len () < 1) { __openat64_missing_mode (); return __openat64_2 (__fd, __path, __oflag); } return __openat64_alias (__fd, __path, __oflag, __va_arg_pack ()); } if (__va_arg_pack_len () < 1) return __openat64_2 (__fd, __path, __oflag); return __openat64_alias (__fd, __path, __oflag, __va_arg_pack ()); } # endif #endif
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