1 /* An lseek() function that detects pipes.
2 Copyright (C) 2007, 2009-2016 Free Software Foundation, Inc.
4 This program is free software; you can redistribute it and/or modify
5 it under the terms of the GNU General Public License as published by
6 the Free Software Foundation; either version 2, or (at your option)
9 This program is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 GNU General Public License for more details.
14 You should have received a copy of the GNU General Public License along
15 with this program; if not, see <http://www.gnu.org/licenses/>. */
22 #if (defined _WIN32 || defined __WIN32__) && ! defined __CYGWIN__
23 /* Windows platforms. */
24 /* Get GetFileType. */
26 /* Get _get_osfhandle. */
27 # include "msvc-nothrow.h"
29 # include <sys/stat.h>
36 rpl_lseek (int fd, off_t offset, int whence)
38 #if (defined _WIN32 || defined __WIN32__) && ! defined __CYGWIN__
39 /* mingw lseek mistakenly succeeds on pipes, sockets, and terminals. */
40 HANDLE h = (HANDLE) _get_osfhandle (fd);
41 if (h == INVALID_HANDLE_VALUE)
46 if (GetFileType (h) != FILE_TYPE_DISK)
52 /* BeOS lseek mistakenly succeeds on pipes... */
54 if (fstat (fd, &statbuf) < 0)
56 if (!S_ISREG (statbuf.st_mode))
62 #if _GL_WINDOWS_64_BIT_OFF_T
63 return _lseeki64 (fd, offset, whence);
65 return lseek (fd, offset, whence);