diff options
Diffstat (limited to 'REORG.TODO/io/bits/fcntl2.h')
| -rw-r--r-- | REORG.TODO/io/bits/fcntl2.h | 172 |
1 files changed, 172 insertions, 0 deletions
diff --git a/REORG.TODO/io/bits/fcntl2.h b/REORG.TODO/io/bits/fcntl2.h new file mode 100644 index 0000000000..4109ead9a8 --- /dev/null +++ b/REORG.TODO/io/bits/fcntl2.h @@ -0,0 +1,172 @@ +/* Checking macros for fcntl functions. + Copyright (C) 2007-2017 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 + <http://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 |