From 8889e7aa461ae71467783ca630638b474ad17d14 Mon Sep 17 00:00:00 2001 From: Ulrich Drepper Date: Wed, 21 Feb 2007 19:03:26 +0000 Subject: [PATCH] [BZ #3458] * sysdeps/unix/sysv/linux/posix_madvise.c: New file. * sysdeps/unix/sysv/linux/syscalls.list: Remove posix_madvise entry. * stdio-common/tfformat.c (sprint_doubles): Some more tests. --- ChangeLog | 6 +++- sysdeps/unix/sysv/linux/posix_madvise.c | 38 +++++++++++++++++++++++++ sysdeps/unix/sysv/linux/syscalls.list | 1 - 3 files changed, 43 insertions(+), 2 deletions(-) create mode 100644 sysdeps/unix/sysv/linux/posix_madvise.c diff --git a/ChangeLog b/ChangeLog index 4557cbcb3b0..152b4d22021 100644 --- a/ChangeLog +++ b/ChangeLog @@ -1,5 +1,9 @@ 2007-02-21 Ulrich Drepper + [BZ #3458] + * sysdeps/unix/sysv/linux/posix_madvise.c: New file. + * sysdeps/unix/sysv/linux/syscalls.list: Remove posix_madvise entry. + [BZ #4076] * io/ftw.c (ftw_startup): Handle special case of FTW_CHDIR in /. (open_dir_stream): Likewise. @@ -18,8 +22,8 @@ [BZ #4070] * stdio-common/printf_fp.c (___printf_fp): Handle a few more - * stdio-common/tfformat.c (sprint_doubles): Some more tests. special cases. + * stdio-common/tfformat.c (sprint_doubles): Some more tests. 2007-02-19 Ulrich Drepper diff --git a/sysdeps/unix/sysv/linux/posix_madvise.c b/sysdeps/unix/sysv/linux/posix_madvise.c new file mode 100644 index 00000000000..d0e476b61e2 --- /dev/null +++ b/sysdeps/unix/sysv/linux/posix_madvise.c @@ -0,0 +1,38 @@ +/* Copyright (C) 2007 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, write to the Free + Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA + 02111-1307 USA. */ + +#include +#include + + +int +posix_madvise (void *addr, size_t len, int advise) +{ + /* We have one problem: the kernel's MADV_DONTNEED does not + correspond to POSIX's POSIX_MADV_DONTNEED. The former simply + discards changes made to the memory without writing it back to + disk, if this would be necessary. The POSIX behavior does not + allow this. There is no functionality mapping the POSIX behavior + so far so we ignore that advise for now. */ + if (advise == POSIX_MADV_DONTNEED) + return 0; + + INTERNAL_SYSCALL_DECL (err); + int result = INTERNAL_SYSCALL (madvise, err, 3, addr, len, advise); + return INTERNAL_SYSCALL_ERRNO (result, err); +} diff --git a/sysdeps/unix/sysv/linux/syscalls.list b/sysdeps/unix/sysv/linux/syscalls.list index 5776673733b..38103f0c680 100644 --- a/sysdeps/unix/sysv/linux/syscalls.list +++ b/sysdeps/unix/sysv/linux/syscalls.list @@ -32,7 +32,6 @@ ioperm - ioperm i:iii ioperm iopl - iopl i:i iopl klogctl EXTRA syslog i:isi klogctl lchown - lchown i:sii __lchown lchown -posix_madvise - madvise Vi:pii posix_madvise madvise - madvise i:pii madvise mincore - mincore i:anV mincore mlock - mlock i:bn mlock -- 2.39.5