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81 lines
2.3 KiB
C
81 lines
2.3 KiB
C
/* Selective file content synch'ing.
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Copyright (C) 2006, 2007, 2009, 2011 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 <errno.h>
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#include <fcntl.h>
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#include <sys/types.h>
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#include <sysdep-cancel.h>
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#include <sys/syscall.h>
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#ifdef __NR_sync_file_range
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int
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sync_file_range (int fd, __off64_t from, __off64_t to, unsigned int flags)
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{
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if (SINGLE_THREAD_P)
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return INLINE_SYSCALL (sync_file_range, 6, fd,
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__LONG_LONG_PAIR ((long) (from >> 32), (long) from),
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__LONG_LONG_PAIR ((long) (to >> 32), (long) to),
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flags);
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int result;
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int oldtype = LIBC_CANCEL_ASYNC ();
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result = INLINE_SYSCALL (sync_file_range, 6, fd,
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__LONG_LONG_PAIR ((long) (from >> 32), (long) from),
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__LONG_LONG_PAIR ((long) (to >> 32), (long) to),
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flags);
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LIBC_CANCEL_RESET (oldtype);
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return result;
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}
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#elif defined __NR_sync_file_range2
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int
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sync_file_range (int fd, __off64_t from, __off64_t to, unsigned int flags)
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{
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if (SINGLE_THREAD_P)
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return INLINE_SYSCALL (sync_file_range2, 6, fd, flags,
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__LONG_LONG_PAIR ((long) (from >> 32), (long) from),
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__LONG_LONG_PAIR ((long) (to >> 32), (long) to));
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int result;
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int oldtype = LIBC_CANCEL_ASYNC ();
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result = INLINE_SYSCALL (sync_file_range2, 6, fd, flags,
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__LONG_LONG_PAIR ((long) (from >> 32), (long) from),
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__LONG_LONG_PAIR ((long) (to >> 32), (long) to));
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LIBC_CANCEL_RESET (oldtype);
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return result;
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}
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#else
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int
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sync_file_range (int fd, __off64_t from, __off64_t to, unsigned int flags)
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{
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__set_errno (ENOSYS);
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return -1;
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}
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stub_warning (sync_file_range)
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# include <stub-tag.h>
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#endif
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