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| author | Ulrich Drepper <drepper@redhat.com> | 1999-07-09 15:17:23 +0000 |
|---|---|---|
| committer | Ulrich Drepper <drepper@redhat.com> | 1999-07-09 15:17:23 +0000 |
| commit | 3eb515a631f57058d63b6d0e8a9dd9502e289ff5 (patch) | |
| tree | 58736711f4c685d7b5513385cf0a9b9fbe20fa0f /sysdeps | |
| parent | 6a1db4ffb67ccb8c3861bb398bff5a033f2d7793 (diff) | |
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Update.
* sysdeps/unix/sysv/linux/syscalls.list: Remove mmap64 alias for mmap.
* sysdeps/unix/sysv/linux/mmap64.c: Test whether mapped area is in
range of mmap. If not fail.
Patches by Daniel Jacobowitz <dan@debian.org>.
Diffstat (limited to 'sysdeps')
| -rw-r--r-- | sysdeps/unix/sysv/linux/mmap64.c | 49 | ||||
| -rw-r--r-- | sysdeps/unix/sysv/linux/syscalls.list | 2 |
2 files changed, 47 insertions, 4 deletions
diff --git a/sysdeps/unix/sysv/linux/mmap64.c b/sysdeps/unix/sysv/linux/mmap64.c index fc7e416bfb..f8082ecd4f 100644 --- a/sysdeps/unix/sysv/linux/mmap64.c +++ b/sysdeps/unix/sysv/linux/mmap64.c @@ -1,3 +1,46 @@ -/* At least for now mmap64 is the same as mmap on all platforms. - When/If the 32 bit platforms get a >32 bit VFS we'll have to - change it for these platforms. */ +/* Copyright (C) 1997, 1998, 1999 Free Software Foundation, Inc. + This file is part of the GNU C Library. + Contributed by Daniel Jacobowitz <dan@debian.org>, 1999. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Library General Public License as + published by the Free Software Foundation; either version 2 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 + Library General Public License for more details. + + You should have received a copy of the GNU Library General Public + License along with the GNU C Library; see the file COPYING.LIB. If not, + write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, + Boston, MA 02111-1307, USA. */ + +#include <errno.h> +#include <unistd.h> + +#include <sysdep.h> +#include <sys/syscall.h> + +#include <sys/mman.h> + +__ptr_t +__mmap64 (addr, len, prot, flags, fd, offset) + __ptr_t addr; + size_t len; + int prot; + int flags; + int fd; + off64_t offset; +{ + if (offset != (off_t) offset || (offset + len) != (off_t) (offset + len)) + { + __set_errno (EINVAL); + return MAP_FAILED; + } + + return __mmap (addr, len, prot, flags, fd, (off_t) offset); +} + +weak_alias (__mmap64, mmap64) diff --git a/sysdeps/unix/sysv/linux/syscalls.list b/sysdeps/unix/sysv/linux/syscalls.list index 3ced59667d..9cec3e3686 100644 --- a/sysdeps/unix/sysv/linux/syscalls.list +++ b/sysdeps/unix/sysv/linux/syscalls.list @@ -23,7 +23,7 @@ klogctl EXTRA syslog 3 klogctl lchown - lchown 3 __lchown lchown mlock EXTRA mlock 2 __mlock mlock mlockall EXTRA mlockall 1 __mlockall mlockall -mmap - mmap 6 __mmap mmap mmap64 +mmap - mmap 6 __mmap mmap mount EXTRA mount 5 __mount mount mremap EXTRA mremap 4 __mremap mremap munlock EXTRA munlock 2 __munlock munlock |