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author | Roland McGrath <roland@gnu.org> | 2002-02-19 00:22:30 +0000 |
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committer | Roland McGrath <roland@gnu.org> | 2002-02-19 00:22:30 +0000 |
commit | 3a2832a07f0b5b72d457c788e2268232f22a1a67 (patch) | |
tree | 8e9f55d68d02df8bf654a1f4f74dfea987025654 /sysdeps/mach/msync.c | |
parent | 21297437bb37c5f1aedb615fd41e93efc12f556a (diff) | |
download | glibc-3a2832a07f0b5b72d457c788e2268232f22a1a67.tar.gz |
* sysdeps/mach/hurd/times.c: Fix typo in last change.
* 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.
Diffstat (limited to 'sysdeps/mach/msync.c')
-rw-r--r-- | sysdeps/mach/msync.c | 57 |
1 files changed, 57 insertions, 0 deletions
diff --git a/sysdeps/mach/msync.c b/sysdeps/mach/msync.c new file mode 100644 index 0000000000..cf62960b4f --- /dev/null +++ b/sysdeps/mach/msync.c @@ -0,0 +1,57 @@ +/* msync -- Synchronize mapped memory to external storage. Mach version. + Copyright (C) 2002 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 <sys/types.h> +#include <sys/mman.h> +#include <errno.h> +#include <mach.h> + +/* Some Mach variants have vm_msync and some don't. Those that have it + define the VM_SYNC_* bits when we include <mach/mach_types.h>. */ + +#ifndef VM_SYNC_SYNCHRONOUS +# include <sysdeps/generic/msync.c> +#else + +/* Synchronize the region starting at ADDR and extending LEN bytes with the + file it maps. Filesystem operations on a file being mapped are + unpredictable before this is done. */ + +int +msync (__ptr_t addr, size_t len, int flags) +{ + vm_sync_t sync_flags = 0; + kern_return_t err; + + if (flags & MS_SYNC) + sync_flags |= VM_SYNC_SYNCHRONOUS; + if (flags & MS_ASYNC) + sync_flags |= VM_SYNC_ASYNCHRONOUS; + if (flags & MS_INVALIDATE) + sync_flags |= VM_SYNC_INVALIDATE; + + if (err = __vm_msync (__mach_task_self (), + (vm_address_t) addr, (vm_size_t) len, sync_flags)) + { + errno = err; + return -1; + } + return 0; +} +#endif |