67 lines
2.0 KiB
C
67 lines
2.0 KiB
C
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/* Enqueue and list of read or write requests, 64bit offset version.
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Copyright (C) 1997 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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Contributed by Ulrich Drepper <drepper@cygnus.com>, 1997.
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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 Library General Public License as
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published by the Free Software Foundation; either version 2 of the
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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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Library General Public License for more details.
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You should have received a copy of the GNU Library General Public
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License along with the GNU C Library; see the file COPYING.LIB. If not,
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write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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Boston, MA 02111-1307, USA. */
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#include <aio.h>
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#include <errno.h>
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#include <semaphore.h>
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#include "aio_misc.h"
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int
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lio_listio64 (mode, list, nent, sig)
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int mode;
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struct aiocb64 *const list[];
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int nent;
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struct sigevent *sig;
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{
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int cnt;
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int total = 0;
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int result = 0;
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/* Check arguments. */
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if (mode != LIO_WAIT && mode != LIO_NOWAIT)
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{
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__set_errno (EINVAL);
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return -1;
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}
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/* Request the semaphore. */
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sem_wait (&__aio_requests_sema);
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/* Now we can enqueue all requests. Since we already acquired the
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semaphore the enqueue function need not do this. */
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for (cnt = 0; cnt < nent; ++cnt)
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if (list[cnt] != NULL && list[cnt]->aio_lio_opcode != LIO_NOP)
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if (__aio_enqueue_request ((aiocb_union *) list[cnt],
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list[cnt]->aio_lio_opcode | 128, 0) >= 0)
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/* Successfully enqueued. */
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++total;
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else
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/* Signal that we've seen an error. `errno' and the error code
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of the aiocb will tell more. */
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result = -1;
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/* Release the semaphore. */
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sem_post (&__aio_requests_sema);
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return result;
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}
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