diff options
| -rw-r--r-- | sysdeps/unix/sysv/linux/generic/wordsize-32/overflow.h | 69 |
1 files changed, 0 insertions, 69 deletions
diff --git a/sysdeps/unix/sysv/linux/generic/wordsize-32/overflow.h b/sysdeps/unix/sysv/linux/generic/wordsize-32/overflow.h deleted file mode 100644 index f2a58d654f..0000000000 --- a/sysdeps/unix/sysv/linux/generic/wordsize-32/overflow.h +++ /dev/null @@ -1,69 +0,0 @@ -/* Overflow tests for stat, statfs, and lseek functions. - Copyright (C) 2011-2021 Free Software Foundation, Inc. - This file is part of the GNU C Library. - Contributed by Chris Metcalf <cmetcalf@tilera.com>, 2011. - - 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/>. */ - -#include <sys/stat.h> -#include <sys/statfs.h> -#include <sys/types.h> - -/* Test for overflows of structures where we ask the kernel to fill them - in with standard 64-bit syscalls but return them through APIs that - only expose the low 32 bits of some fields. */ - -static inline off_t lseek_overflow (loff_t res) -{ - off_t retval = (off_t) res; - if (retval == res) - return retval; - - __set_errno (EOVERFLOW); - return (off_t) -1; -} - -static inline int stat_overflow (struct stat *buf) -{ -#if defined __INO_T_MATCHES_INO64_T - return 0; -#else - if (buf->__st_ino_pad == 0 && buf->__st_size_pad == 0 - && buf->__st_blocks_pad == 0) - return 0; - - __set_errno (EOVERFLOW); - return -1; -#endif -} - -/* Note that f_files and f_ffree may validly be a sign-extended -1. */ -static inline int statfs_overflow (struct statfs *buf) -{ -#if __STATFS_MATCHES_STATFS64 - return 0; -#else - if (buf->__f_blocks_pad == 0 && buf->__f_bfree_pad == 0 - && buf->__f_bavail_pad == 0 - && (buf->__f_files_pad == 0 - || (buf->f_files == -1U && buf->__f_files_pad == -1)) - && (buf->__f_ffree_pad == 0 - || (buf->f_ffree == -1U && buf->__f_ffree_pad == -1))) - return 0; - - __set_errno (EOVERFLOW); - return -1; -#endif -} |