diff options
Diffstat (limited to 'REORG.TODO/sysdeps/unix/sysv/linux/mmap.c')
-rw-r--r-- | REORG.TODO/sysdeps/unix/sysv/linux/mmap.c | 51 |
1 files changed, 51 insertions, 0 deletions
diff --git a/REORG.TODO/sysdeps/unix/sysv/linux/mmap.c b/REORG.TODO/sysdeps/unix/sysv/linux/mmap.c new file mode 100644 index 0000000000..b1f229f19c --- /dev/null +++ b/REORG.TODO/sysdeps/unix/sysv/linux/mmap.c @@ -0,0 +1,51 @@ +/* mmap - map files or devices into memory. Linux version. + Copyright (C) 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/>. */ + +#include <errno.h> +#include <unistd.h> +#include <sys/mman.h> +#include <sysdep.h> +#include <stdint.h> +#include <mmap_internal.h> + +#ifndef __OFF_T_MATCHES_OFF64_T + +/* An architecture may override this. */ +# ifndef MMAP_ADJUST_OFFSET +# define MMAP_ADJUST_OFFSET(offset) offset +# endif + +void * +__mmap (void *addr, size_t len, int prot, int flags, int fd, off_t offset) +{ + MMAP_CHECK_PAGE_UNIT (); + + if (offset & MMAP_OFF_LOW_MASK) + return (__ptr_t) INLINE_SYSCALL_ERROR_RETURN_VALUE (EINVAL); + +#ifdef __NR_mmap2 + return (void *) MMAP_CALL (mmap2, addr, len, prot, flags, fd, + offset / (uint32_t) MMAP2_PAGE_UNIT); +#else + return (void *) MMAP_CALL (mmap, addr, len, prot, flags, fd, + MMAP_ADJUST_OFFSET (offset)); +#endif +} +weak_alias (__mmap, mmap) + +#endif /* __OFF_T_MATCHES_OFF64_T */ |