/* pread.c -- version of pread for gold. */
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/* pread.c -- version of pread for gold. */
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/* Copyright 2006, 2007, 2009 Free Software Foundation, Inc.
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/* Copyright 2006, 2007, 2009 Free Software Foundation, Inc.
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Written by Ian Lance Taylor <iant@google.com>.
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Written by Ian Lance Taylor <iant@google.com>.
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This file is part of gold.
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This file is part of gold.
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This program is free software; you can redistribute it and/or modify
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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This program 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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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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along with this program; if not, write to the Free Software
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Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
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Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
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MA 02110-1301, USA. */
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MA 02110-1301, USA. */
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/* This file implements pread for systems which don't have it. This
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/* This file implements pread for systems which don't have it. This
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file is only compiled if pread is not present on the system. This
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file is only compiled if pread is not present on the system. This
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is not an exact version of pread, as it does not preserve the
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is not an exact version of pread, as it does not preserve the
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current file offset. */
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current file offset. */
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#include "config.h"
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#include "config.h"
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#include <stdio.h>
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#include <stdio.h>
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#include <sys/types.h>
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#include <sys/types.h>
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#include <unistd.h>
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#include <unistd.h>
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extern ssize_t pread (int, void *, size_t, off_t);
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extern ssize_t pread (int, void *, size_t, off_t);
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ssize_t
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ssize_t
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pread (int fd, void *buf, size_t count, off_t offset)
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pread (int fd, void *buf, size_t count, off_t offset)
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{
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{
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if (lseek(fd, offset, SEEK_SET) != offset)
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if (lseek(fd, offset, SEEK_SET) != offset)
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return -1;
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return -1;
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return read(fd, buf, count);
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return read(fd, buf, count);
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}
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}
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