gnulib: lib/lseek.c annotate

annotate lib/lseek.c @ 17363:5a51fb7777a9

sys_select, sys_time: port 2013-01-30 Solaris 2.6 fix to Cygwin Problem reported by Marco Atzeri in <http://lists.gnu.org/archive/html/bug-gnulib/2013-03/msg00000.html>. * lib/sys_select.in.h [HAVE_SYS_SELECT_H && _CYGWIN_SYS_TIME_H]: Simply delegate to the system <sys/select.h> in this case too. Also, pay attention to _GL_SYS_SELECT_H_REDIRECT_FROM_SYS_TIME_H only if OSF/1, since otherwise Cygwin breaks, and it doesn't seem to be needed on Solaris either. * lib/sys_time.in.h [_CYGWIN_SYS_TIME_H]: Simply delgate to the system <sys/time.h> in this case.

author	Paul Eggert <eggert@cs.ucla.edu>
date	Tue, 19 Mar 2013 09:08:47 -0700
parents	e542fd46ad6f
children	344018b6e5d7

rev	line source
8872 dfee3b4fd46c Fix lseek on mingw. Eric Blake <ebb9@byu.net> parents: diff changeset	1 /* An lseek() function that detects pipes.
17249 e542fd46ad6f maint: update all copyright year number ranges Eric Blake <eblake@redhat.com> parents: 16795 diff changeset	2 Copyright (C) 2007, 2009-2013 Free Software Foundation, Inc.
8872 dfee3b4fd46c Fix lseek on mingw. Eric Blake <ebb9@byu.net> parents: diff changeset	3
dfee3b4fd46c Fix lseek on mingw. Eric Blake <ebb9@byu.net> parents: diff changeset	4 This program is free software; you can redistribute it and/or modify
dfee3b4fd46c Fix lseek on mingw. Eric Blake <ebb9@byu.net> parents: diff changeset	5 it under the terms of the GNU General Public License as published by
dfee3b4fd46c Fix lseek on mingw. Eric Blake <ebb9@byu.net> parents: diff changeset	6 the Free Software Foundation; either version 2, or (at your option)
dfee3b4fd46c Fix lseek on mingw. Eric Blake <ebb9@byu.net> parents: diff changeset	7 any later version.
dfee3b4fd46c Fix lseek on mingw. Eric Blake <ebb9@byu.net> parents: diff changeset	8
dfee3b4fd46c Fix lseek on mingw. Eric Blake <ebb9@byu.net> parents: diff changeset	9 This program is distributed in the hope that it will be useful,
dfee3b4fd46c Fix lseek on mingw. Eric Blake <ebb9@byu.net> parents: diff changeset	10 but WITHOUT ANY WARRANTY; without even the implied warranty of
dfee3b4fd46c Fix lseek on mingw. Eric Blake <ebb9@byu.net> parents: diff changeset	11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
dfee3b4fd46c Fix lseek on mingw. Eric Blake <ebb9@byu.net> parents: diff changeset	12 GNU General Public License for more details.
dfee3b4fd46c Fix lseek on mingw. Eric Blake <ebb9@byu.net> parents: diff changeset	13
dfee3b4fd46c Fix lseek on mingw. Eric Blake <ebb9@byu.net> parents: diff changeset	14 You should have received a copy of the GNU General Public License along
16366 bb182ee4a09d maint: replace FSF snail-mail addresses with URLs Paul Eggert <eggert@cs.ucla.edu> parents: 16201 diff changeset	15 with this program; if not, see <http://www.gnu.org/licenses/>. */
8872 dfee3b4fd46c Fix lseek on mingw. Eric Blake <ebb9@byu.net> parents: diff changeset	16
dfee3b4fd46c Fix lseek on mingw. Eric Blake <ebb9@byu.net> parents: diff changeset	17 #include <config.h>
dfee3b4fd46c Fix lseek on mingw. Eric Blake <ebb9@byu.net> parents: diff changeset	18
dfee3b4fd46c Fix lseek on mingw. Eric Blake <ebb9@byu.net> parents: diff changeset	19 /* Specification. */
dfee3b4fd46c Fix lseek on mingw. Eric Blake <ebb9@byu.net> parents: diff changeset	20 #include <unistd.h>
dfee3b4fd46c Fix lseek on mingw. Eric Blake <ebb9@byu.net> parents: diff changeset	21
9153 f03082407073 Work around lseek bug on BeOS. Bruno Haible <bruno@clisp.org> parents: 8877 diff changeset	22 #if (defined _WIN32 \|\| defined __WIN32__) && ! defined __CYGWIN__
f03082407073 Work around lseek bug on BeOS. Bruno Haible <bruno@clisp.org> parents: 8877 diff changeset	23 /* Windows platforms. */
f03082407073 Work around lseek bug on BeOS. Bruno Haible <bruno@clisp.org> parents: 8877 diff changeset	24 /* Get GetFileType. */
f03082407073 Work around lseek bug on BeOS. Bruno Haible <bruno@clisp.org> parents: 8877 diff changeset	25 # include <windows.h>
15752 b86e9061a6d0 New module 'msvc-nothrow'. Makes _get_osfhandle safe on MSVC 9. Bruno Haible <bruno@clisp.org> parents: 14079 diff changeset	26 /* Get _get_osfhandle. */
b86e9061a6d0 New module 'msvc-nothrow'. Makes _get_osfhandle safe on MSVC 9. Bruno Haible <bruno@clisp.org> parents: 14079 diff changeset	27 # include "msvc-nothrow.h"
9153 f03082407073 Work around lseek bug on BeOS. Bruno Haible <bruno@clisp.org> parents: 8877 diff changeset	28 #else
f03082407073 Work around lseek bug on BeOS. Bruno Haible <bruno@clisp.org> parents: 8877 diff changeset	29 # include <sys/stat.h>
f03082407073 Work around lseek bug on BeOS. Bruno Haible <bruno@clisp.org> parents: 8877 diff changeset	30 #endif
8872 dfee3b4fd46c Fix lseek on mingw. Eric Blake <ebb9@byu.net> parents: diff changeset	31 #include <errno.h>
dfee3b4fd46c Fix lseek on mingw. Eric Blake <ebb9@byu.net> parents: diff changeset	32
dfee3b4fd46c Fix lseek on mingw. Eric Blake <ebb9@byu.net> parents: diff changeset	33 #undef lseek
dfee3b4fd46c Fix lseek on mingw. Eric Blake <ebb9@byu.net> parents: diff changeset	34
dfee3b4fd46c Fix lseek on mingw. Eric Blake <ebb9@byu.net> parents: diff changeset	35 off_t
dfee3b4fd46c Fix lseek on mingw. Eric Blake <ebb9@byu.net> parents: diff changeset	36 rpl_lseek (int fd, off_t offset, int whence)
dfee3b4fd46c Fix lseek on mingw. Eric Blake <ebb9@byu.net> parents: diff changeset	37 {
9153 f03082407073 Work around lseek bug on BeOS. Bruno Haible <bruno@clisp.org> parents: 8877 diff changeset	38 #if (defined _WIN32 \|\| defined __WIN32__) && ! defined __CYGWIN__
8872 dfee3b4fd46c Fix lseek on mingw. Eric Blake <ebb9@byu.net> parents: diff changeset	39 /* mingw lseek mistakenly succeeds on pipes, sockets, and terminals. */
8877 30d389dd4713 Improve lseek module. Eric Blake <ebb9@byu.net> parents: 8872 diff changeset	40 HANDLE h = (HANDLE) _get_osfhandle (fd);
30d389dd4713 Improve lseek module. Eric Blake <ebb9@byu.net> parents: 8872 diff changeset	41 if (h == INVALID_HANDLE_VALUE)
30d389dd4713 Improve lseek module. Eric Blake <ebb9@byu.net> parents: 8872 diff changeset	42 {
30d389dd4713 Improve lseek module. Eric Blake <ebb9@byu.net> parents: 8872 diff changeset	43 errno = EBADF;
30d389dd4713 Improve lseek module. Eric Blake <ebb9@byu.net> parents: 8872 diff changeset	44 return -1;
30d389dd4713 Improve lseek module. Eric Blake <ebb9@byu.net> parents: 8872 diff changeset	45 }
30d389dd4713 Improve lseek module. Eric Blake <ebb9@byu.net> parents: 8872 diff changeset	46 if (GetFileType (h) != FILE_TYPE_DISK)
8872 dfee3b4fd46c Fix lseek on mingw. Eric Blake <ebb9@byu.net> parents: diff changeset	47 {
dfee3b4fd46c Fix lseek on mingw. Eric Blake <ebb9@byu.net> parents: diff changeset	48 errno = ESPIPE;
dfee3b4fd46c Fix lseek on mingw. Eric Blake <ebb9@byu.net> parents: diff changeset	49 return -1;
dfee3b4fd46c Fix lseek on mingw. Eric Blake <ebb9@byu.net> parents: diff changeset	50 }
9153 f03082407073 Work around lseek bug on BeOS. Bruno Haible <bruno@clisp.org> parents: 8877 diff changeset	51 #else
f03082407073 Work around lseek bug on BeOS. Bruno Haible <bruno@clisp.org> parents: 8877 diff changeset	52 /* BeOS lseek mistakenly succeeds on pipes... */
f03082407073 Work around lseek bug on BeOS. Bruno Haible <bruno@clisp.org> parents: 8877 diff changeset	53 struct stat statbuf;
f03082407073 Work around lseek bug on BeOS. Bruno Haible <bruno@clisp.org> parents: 8877 diff changeset	54 if (fstat (fd, &statbuf) < 0)
f03082407073 Work around lseek bug on BeOS. Bruno Haible <bruno@clisp.org> parents: 8877 diff changeset	55 return -1;
f03082407073 Work around lseek bug on BeOS. Bruno Haible <bruno@clisp.org> parents: 8877 diff changeset	56 if (!S_ISREG (statbuf.st_mode))
f03082407073 Work around lseek bug on BeOS. Bruno Haible <bruno@clisp.org> parents: 8877 diff changeset	57 {
f03082407073 Work around lseek bug on BeOS. Bruno Haible <bruno@clisp.org> parents: 8877 diff changeset	58 errno = ESPIPE;
f03082407073 Work around lseek bug on BeOS. Bruno Haible <bruno@clisp.org> parents: 8877 diff changeset	59 return -1;
f03082407073 Work around lseek bug on BeOS. Bruno Haible <bruno@clisp.org> parents: 8877 diff changeset	60 }
f03082407073 Work around lseek bug on BeOS. Bruno Haible <bruno@clisp.org> parents: 8877 diff changeset	61 #endif
16795 6a9ea5d7b466 Large File Support for native Windows platforms. Bruno Haible <bruno@clisp.org> parents: 16366 diff changeset	62 #if _GL_WINDOWS_64_BIT_OFF_T
6a9ea5d7b466 Large File Support for native Windows platforms. Bruno Haible <bruno@clisp.org> parents: 16366 diff changeset	63 return _lseeki64 (fd, offset, whence);
6a9ea5d7b466 Large File Support for native Windows platforms. Bruno Haible <bruno@clisp.org> parents: 16366 diff changeset	64 #else
8872 dfee3b4fd46c Fix lseek on mingw. Eric Blake <ebb9@byu.net> parents: diff changeset	65 return lseek (fd, offset, whence);
16795 6a9ea5d7b466 Large File Support for native Windows platforms. Bruno Haible <bruno@clisp.org> parents: 16366 diff changeset	66 #endif
8872 dfee3b4fd46c Fix lseek on mingw. Eric Blake <ebb9@byu.net> parents: diff changeset	67 }

Mercurial > gnulib

annotate lib/lseek.c @ 17363:5a51fb7777a9