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3867142346
This patch introduce a fallback mechanism for old systems that do not
support utimensat(). This fix build failure with following warnings:
hw/virtio-9p-local.c: In function 'local_utimensat':
hw/virtio-9p-local.c:479: warning: implicit declaration of function 'utimensat'
hw/virtio-9p-local.c:479: warning: nested extern declaration of 'utimensat'
and:
hw/virtio-9p.c: In function 'v9fs_setattr_post_chmod':
hw/virtio-9p.c:1410: error: 'UTIME_NOW' undeclared (first use in this function)
hw/virtio-9p.c:1410: error: (Each undeclared identifier is reported only once
hw/virtio-9p.c:1410: error: for each function it appears in.)
hw/virtio-9p.c:1413: error: 'UTIME_OMIT' undeclared (first use in this function)
hw/virtio-9p.c: In function 'v9fs_wstat_post_chmod':
hw/virtio-9p.c:2905: error: 'UTIME_OMIT' undeclared (first use in this function)
[NOTE: At this time virtio-9p is only user of utimensat(), and is available
only when host is linux and CONFIG_VIRTFS is defined. So there are
no similar warning for win32. Please provide a wrapper for win32 in
oslib-win32.c if new user really requires it.]
v5:
- Allow fallback on runtime
- Move qemu_utimensat() to oslib-posix.c
- Rebased on latest qemu.git
v4:
- Use tv_now.tv_usec
v3:
- Use better alternative handling for UTIME_NOW/OMIT
- Move qemu_utimensat() to cutils.c
V2:
- Introduce qemu_utimensat()
Acked-by: Chris Wright <chrisw@sous-sol.org>
Acked-by: M. Mohan Kumar <mohan@in.ibm.com>
Acked-by: Jes Sorensen <Jes.Sorensen@redhat.com>
Signed-off-by: Hidetoshi Seto <seto.hidetoshi@jp.fujitsu.com>
Signed-off-by: Venkateswararao Jujjuri <jvrao@linux.vnet.ibm.com>
54 lines
1.8 KiB
C
54 lines
1.8 KiB
C
/*
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* posix 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_POSIX_H
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#define QEMU_OS_POSIX_H
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static inline void os_host_main_loop_wait(int *timeout)
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{
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}
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void os_set_line_buffering(void);
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void os_set_proc_name(const char *s);
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void os_setup_signal_handling(void);
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void os_daemonize(void);
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void os_setup_post(void);
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typedef struct timeval qemu_timeval;
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#define qemu_gettimeofday(tp) gettimeofday(tp, NULL)
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#ifndef CONFIG_UTIMENSAT
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#ifndef UTIME_NOW
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# define UTIME_NOW ((1l << 30) - 1l)
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#endif
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#ifndef UTIME_OMIT
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# define UTIME_OMIT ((1l << 30) - 2l)
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#endif
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#endif
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typedef struct timespec qemu_timespec;
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int qemu_utimensat(int dirfd, const char *path, const qemu_timespec *times,
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int flags);
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#endif
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