| /* 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 |
| |
| #define __warn_open_too_many_args \ |
| "open can be called either with 2 or 3 arguments, not more" |
| #define __warn_open_missing_mode \ |
| "open with O_CREAT in second argument needs 3 arguments" |
| #ifdef __use_clang_fortify |
| __fortify_overload __clang_prefer_this_overload int |
| open (const char *const __clang_pass_object_size __path, int __oflag) |
| __clang_error_if (__OPEN_NEEDS_MODE (__oflag), __warn_open_missing_mode) |
| { |
| return __open_2 (__path, __oflag); |
| } |
| |
| __fortify_overload int |
| open (const char *const __clang_pass_object_size __path, int __oflag, |
| mode_t __mode) |
| { |
| return __open_alias (__path, __oflag, __mode); |
| } |
| #else |
| __errordecl (__open_too_many_args, __warn_open_too_many_args); |
| __errordecl (__open_missing_mode, __warn_open_missing_mode); |
| |
| __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 ()); |
| } |
| #endif |
| #undef __warn_open_too_many_args |
| #undef __warn_open_missing_mode |
| |
| |
| #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)); |
| |
| # define __warn_open64_too_many_args \ |
| "open64 can be called either with 2 or 3 arguments, not more" |
| # define __warn_open64_missing_mode \ |
| "open64 with O_CREAT in second argument needs 3 arguments" |
| # ifdef __use_clang_fortify |
| __fortify_overload __clang_prefer_this_overload int |
| open64 (const char *const __clang_pass_object_size __path, int __oflag) |
| __clang_error_if (__OPEN_NEEDS_MODE (__oflag), __warn_open64_missing_mode) |
| { |
| return __open64_2 (__path, __oflag); |
| } |
| |
| __fortify_overload __clang_prefer_this_overload int |
| open64 (const char *const __clang_pass_object_size __path, int __oflag, |
| int __mode) |
| { |
| return __open64_alias (__path, __oflag, __mode); |
| } |
| # else |
| __errordecl (__open64_too_many_args, __warn_open64_too_many_args); |
| __errordecl (__open64_missing_mode, __warn_open64_missing_mode); |
| |
| __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 |
| # undef __warn_open64_too_many_args |
| # undef __warn_open64_missing_mode |
| #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 |
| |
| # define __warn_openat_too_many_args "openat can be called either with 3 or " \ |
| "4 arguments, not more" |
| # define __warn_openat_missing_mode "openat with O_CREAT in third argument " \ |
| "needs 4 arguments" |
| # ifdef __use_clang_fortify |
| __fortify_error_function __clang_error (__warn_openat_too_many_args) int |
| openat (int __fd, const char *__path, int __oflag, int __mode, ...); |
| |
| __fortify_overload __clang_prefer_this_overload int |
| openat (int __fd, const char *const __clang_pass_object_size __path, |
| int __oflag) |
| __clang_error_if (__OPEN_NEEDS_MODE (__oflag), __warn_openat_missing_mode) |
| { |
| return __openat_2 (__fd, __path, __oflag); |
| } |
| |
| __fortify_overload __clang_prefer_this_overload int |
| openat (int __fd, const char *const __clang_pass_object_size __path, |
| int __oflag, int __mode) |
| { |
| return __openat_alias (__fd, __path, __oflag, __mode); |
| } |
| # else |
| __errordecl (__openat_too_many_args, __warn_openat_too_many_args); |
| __errordecl (__openat_missing_mode, __warn_openat_missing_mode); |
| |
| __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 ()); |
| } |
| # endif |
| # undef __warn_openat_too_many_args |
| # undef __warn_openat_missing_mode |
| |
| |
| # 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)); |
| |
| # define __warn_openat64_too_many_args "openat64 can be called either with " \ |
| "3 or 4 arguments, not more" |
| # define __warn_openat64_missing_mode "openat64 with O_CREAT in third " \ |
| "argument needs 4 arguments" |
| |
| # ifdef __use_clang_fortify |
| __fortify_error_function __clang_error (__warn_openat64_too_many_args) int |
| openat64 (int __fd, const char *__path, int __oflag, int __mode, ...); |
| |
| __fortify_overload __clang_prefer_this_overload int |
| openat64 (int __fd, const char *const __clang_pass_object_size __path, |
| int __oflag) |
| __clang_error_if (__OPEN_NEEDS_MODE (__oflag), |
| __warn_openat64_missing_mode) |
| { |
| return __openat64_2 (__fd, __path, __oflag); |
| } |
| |
| __fortify_overload __clang_prefer_this_overload int |
| openat64 (int __fd, const char *const __clang_pass_object_size __path, |
| int __oflag, int __mode) |
| { |
| return __openat64_alias (__fd, __path, __oflag, __mode); |
| } |
| # else |
| __errordecl (__openat64_too_many_args, __warn_openat64_too_many_args); |
| __errordecl (__openat64_missing_mode, __warn_openat64_missing_mode); |
| __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 |
| # undef __warn_openat64_too_many_args |
| # undef __warn_openat64_missing_mode |
| # endif |
| #endif |
