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4d9310f427
The oslib-win32 file currently provides a localtime_r and
gmtime_r replacement unconditionally. Some versions of
Mingw-w64 would provide crude macros for localtime_r/gmtime_r
which QEMU takes care to disable. Latest versions of Mingw-w64
now provide actual functions for localtime_r/gmtime_r, but
with a twist that you have to include unistd.h or pthread.h
before including time.h. By luck some files in QEMU have
such an include order, resulting in compile errors:
CC util/osdep.o
In file included from include/qemu-common.h:48:0,
from util/osdep.c:48:
include/sysemu/os-win32.h:77:12: error: redundant redeclaration of 'gmtime_r' [-Werror=redundant-decls]
struct tm *gmtime_r(const time_t *timep, struct tm *result);
^
In file included from include/qemu-common.h:35:0,
from util/osdep.c:48:
/usr/i686-w64-mingw32/sys-root/mingw/include/time.h:272:107: note: previous definition of 'gmtime_r' was here
In file included from include/qemu-common.h:48:0,
from util/osdep.c:48:
include/sysemu/os-win32.h:79:12: error: redundant redeclaration of 'localtime_r' [-Werror=redundant-decls]
struct tm *localtime_r(const time_t *timep, struct tm *result);
^
In file included from include/qemu-common.h:35:0,
from util/osdep.c:48:
/usr/i686-w64-mingw32/sys-root/mingw/include/time.h:269:107: note: previous definition of 'localtime_r' was here
This change adds a configure test to see if localtime_r
exits, and only enables the QEMU impl if missing. We also
re-arrange qemu-common.h try attempt to guarantee that all
source files get unistd.h before time.h and thus see the
localtime_r/gmtime_r defs.
[sw: Use "official" spellings for Mingw-w64, MinGW in comments.]
[sw: Terminate sentences with a dot in comments.]
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
Reviewed-by: Denis V. Lunev <den@openvz.org>
Signed-off-by: Stefan Weil <sw@weilnetz.de>
133 lines
3.8 KiB
C
133 lines
3.8 KiB
C
/*
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* win32 specific declarations
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*
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* Copyright (c) 2003-2008 Fabrice Bellard
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* Copyright (c) 2010 Jes Sorensen <Jes.Sorensen@redhat.com>
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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#ifndef QEMU_OS_WIN32_H
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#define QEMU_OS_WIN32_H
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#include <windows.h>
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#include <winsock2.h>
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/* Workaround for older versions of MinGW. */
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#ifndef ECONNREFUSED
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# define ECONNREFUSED WSAECONNREFUSED
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#endif
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#ifndef EINPROGRESS
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# define EINPROGRESS WSAEINPROGRESS
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#endif
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#ifndef EHOSTUNREACH
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# define EHOSTUNREACH WSAEHOSTUNREACH
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#endif
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#ifndef EINTR
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# define EINTR WSAEINTR
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#endif
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#ifndef EINPROGRESS
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# define EINPROGRESS WSAEINPROGRESS
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#endif
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#ifndef ENETUNREACH
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# define ENETUNREACH WSAENETUNREACH
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#endif
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#ifndef ENOTCONN
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# define ENOTCONN WSAENOTCONN
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#endif
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#ifndef EWOULDBLOCK
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# define EWOULDBLOCK WSAEWOULDBLOCK
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#endif
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#if defined(_WIN64)
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/* On w64, setjmp is implemented by _setjmp which needs a second parameter.
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* If this parameter is NULL, longjump does no stack unwinding.
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* That is what we need for QEMU. Passing the value of register rsp (default)
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* lets longjmp try a stack unwinding which will crash with generated code. */
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# undef setjmp
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# define setjmp(env) _setjmp(env, NULL)
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#endif
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/* QEMU uses sigsetjmp()/siglongjmp() as the portable way to specify
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* "longjmp and don't touch the signal masks". Since we know that the
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* savemask parameter will always be zero we can safely define these
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* in terms of setjmp/longjmp on Win32.
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*/
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#define sigjmp_buf jmp_buf
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#define sigsetjmp(env, savemask) setjmp(env)
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#define siglongjmp(env, val) longjmp(env, val)
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/* Missing POSIX functions. Don't use MinGW-w64 macros. */
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#ifndef CONFIG_LOCALTIME_R
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#undef gmtime_r
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struct tm *gmtime_r(const time_t *timep, struct tm *result);
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#undef localtime_r
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struct tm *localtime_r(const time_t *timep, struct tm *result);
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#endif /* CONFIG_LOCALTIME_R */
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static inline void os_setup_signal_handling(void) {}
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static inline void os_daemonize(void) {}
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static inline void os_setup_post(void) {}
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void os_set_line_buffering(void);
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static inline void os_set_proc_name(const char *dummy) {}
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size_t getpagesize(void);
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#if !defined(EPROTONOSUPPORT)
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# define EPROTONOSUPPORT EINVAL
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#endif
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int setenv(const char *name, const char *value, int overwrite);
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typedef struct {
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long tv_sec;
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long tv_usec;
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} qemu_timeval;
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int qemu_gettimeofday(qemu_timeval *tp);
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static inline bool is_daemonized(void)
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{
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return false;
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}
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static inline int os_mlock(void)
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{
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return -ENOSYS;
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}
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#define fsync _commit
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#if !defined(lseek)
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# define lseek _lseeki64
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#endif
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int qemu_ftruncate64(int, int64_t);
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#if !defined(ftruncate)
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# define ftruncate qemu_ftruncate64
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#endif
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static inline char *realpath(const char *path, char *resolved_path)
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{
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_fullpath(resolved_path, path, _MAX_PATH);
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return resolved_path;
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}
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#endif
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