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authorYue Zhang <yuezha@microsoft.com>2014-06-27 18:19:48 -0700
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2014-07-09 14:21:26 -0700
commite013ac312c79379b26cf29012cfbb37c68f79283 (patch)
tree684ca9c3ada56901c9c8756cce25a6353045873f /tools/hv
parentAdd MODULE_DESCRIPTION to dummy-irq.c and lkdtm.c in drivers/misc (diff)
downloadlinux-dev-e013ac312c79379b26cf29012cfbb37c68f79283.tar.xz
linux-dev-e013ac312c79379b26cf29012cfbb37c68f79283.zip
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>
Diffstat (limited to 'tools/hv')
-rw-r--r--tools/hv/hv_fcopy_daemon.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/tools/hv/hv_fcopy_daemon.c b/tools/hv/hv_fcopy_daemon.c
index fba1c75aa484..8f96b3ee0724 100644
--- a/tools/hv/hv_fcopy_daemon.c
+++ b/tools/hv/hv_fcopy_daemon.c
@@ -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;