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/* An lseek() function that detects pipes.
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Copyright (C) 2007, 2009-2012 Free Software Foundation, Inc.
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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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the Free Software Foundation; either version 3, or (at your option)
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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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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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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 along
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with this program; if not, see <http://www.gnu.org/licenses/>. */
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#if (defined _WIN32 || defined __WIN32__) && ! defined __CYGWIN__
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/* Windows platforms. */
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/* Get GetFileType. */
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/* Get _get_osfhandle. */
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# include "msvc-nothrow.h"
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# include <sys/stat.h>
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rpl_lseek (int fd, off_t offset, int whence)
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#if (defined _WIN32 || defined __WIN32__) && ! defined __CYGWIN__
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/* mingw lseek mistakenly succeeds on pipes, sockets, and terminals. */
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HANDLE h = (HANDLE) _get_osfhandle (fd);
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if (h == INVALID_HANDLE_VALUE)
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if (GetFileType (h) != FILE_TYPE_DISK)
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/* BeOS lseek mistakenly succeeds on pipes... */
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if (fstat (fd, &statbuf) < 0)
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if (!S_ISREG (statbuf.st_mode))
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return lseek (fd, offset, whence);