diff options
Diffstat (limited to 'sysdeps/generic/libc-cap.h')
| -rw-r--r-- | sysdeps/generic/libc-cap.h | 34 |
1 files changed, 34 insertions, 0 deletions
diff --git a/sysdeps/generic/libc-cap.h b/sysdeps/generic/libc-cap.h new file mode 100644 index 0000000000..85ff2a6b61 --- /dev/null +++ b/sysdeps/generic/libc-cap.h @@ -0,0 +1,34 @@ +/* Support for allocations with narrow capability bounds. Generic version. + Copyright (C) 2022 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 _LIBC_CAP_H +#define _LIBC_CAP_H 1 + +/* Larger allocations may need special alignment via cap_align. */ +#define __CAP_ALIGN_THRESHOLD SIZE_MAX + +/* Error if the identifiers bellow are used. */ +void __libc_cap_link_error (void); + +#define __libc_cap_fail(rtype) (__libc_cap_link_error (), (rtype) 0) +#define __libc_cap_roundup(n) __libc_cap_fail (size_t) +#define __libc_cap_align(n) __libc_cap_fail (size_t) +#define __libc_cap_narrow(p, n) __libc_cap_fail (void *) +#define __libc_cap_widen(p) __libc_cap_fail (void *) + +#endif |