3a2832a07f
* sysdeps/mach/hurd/setpriority.c [POLICY_TIMESHARE_BASE_COUNT]: Use task_policy in place of task_priority. * sysdeps/generic/bits/mman.h (MS_ASYNC, MS_SYNC, MS_INVALIDATE): New macros. * sysdeps/mach/msync.c: New file. * sysdeps/mach/powerpc/syscall.S: New file. * mach/msg.c [MACH_MSG_OVERWRITE] (__mach_msg_trap, __mach_msg_overwrite): New functions. * mach/Versions (libc: GLIBC_2.0): Add mach_msg_overwrite and __ name. * sysdeps/mach/configure.in: Check for clock.defs to put into mach_interface_list. * sysdeps/mach/configure: Regenerated. * mach/Makefile (mach-machine): New variable, set from $(base-machine). ($(objpfx)mach-syscalls.mk): Use it in place of $(base-machine). ($(mach-syscalls:%=$(objpfx)%.S) static pattern rule): Use <mach/machine/syscall_sw.h> instead of <sysdep.h>. (mach-shortcuts): Add device_read_overwrite_request, device_read_overwrite, vm_read_overwrite, thread_switch. * configure.in (base_machine): Set to $machine by default. * configure: Regenerated.
58 lines
1.8 KiB
C
58 lines
1.8 KiB
C
/* msync -- Synchronize mapped memory to external storage. Mach version.
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Copyright (C) 2002 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, write to the Free
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Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
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02111-1307 USA. */
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#include <sys/types.h>
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#include <sys/mman.h>
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#include <errno.h>
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#include <mach.h>
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/* Some Mach variants have vm_msync and some don't. Those that have it
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define the VM_SYNC_* bits when we include <mach/mach_types.h>. */
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#ifndef VM_SYNC_SYNCHRONOUS
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# include <sysdeps/generic/msync.c>
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#else
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/* Synchronize the region starting at ADDR and extending LEN bytes with the
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file it maps. Filesystem operations on a file being mapped are
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unpredictable before this is done. */
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int
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msync (__ptr_t addr, size_t len, int flags)
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{
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vm_sync_t sync_flags = 0;
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kern_return_t err;
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if (flags & MS_SYNC)
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sync_flags |= VM_SYNC_SYNCHRONOUS;
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if (flags & MS_ASYNC)
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sync_flags |= VM_SYNC_ASYNCHRONOUS;
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if (flags & MS_INVALIDATE)
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sync_flags |= VM_SYNC_INVALIDATE;
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if (err = __vm_msync (__mach_task_self (),
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(vm_address_t) addr, (vm_size_t) len, sync_flags))
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{
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errno = err;
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return -1;
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}
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return 0;
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}
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#endif
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