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linux-sg2042
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Tools: hv: fix file overwriting of hv_fcopy_daemon 

hv_fcopy_daemon fails to overwrite a file if the target file already
exits.

Add O_TRUNC flag on opening.

Signed-off-by: Yue Zhang <yuezha@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Yue Zhang 2014-06-27 18:19:48 -07:00 committed by Greg Kroah-Hartman
parent da86920f4a
commit e013ac312c
1 changed files with 2 additions and 1 deletions
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3
tools/hv/hv_fcopy_daemon.c
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@ -88,7 +88,8 @@ static int hv_start_fcopy(struct hv_start_fcopy *smsg)
}
}
target_fd = open(target_fname, O_RDWR | O_CREAT | O_CLOEXEC, 0744);
target_fd = open(target_fname,
O_RDWR | O_CREAT | O_TRUNC | O_CLOEXEC, 0744);
if (target_fd == -1) {
syslog(LOG_INFO, "Open Failed: %s", strerror(errno));
goto done;