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-rw-r--r--util/oslib-posix.c7
1 files changed, 6 insertions, 1 deletions
diff --git a/util/oslib-posix.c b/util/oslib-posix.c
index 0e3ab9d..fbd0dc8 100644
--- a/util/oslib-posix.c
+++ b/util/oslib-posix.c
@@ -95,6 +95,11 @@ bool qemu_write_pidfile(const char *path, Error **errp)
while (1) {
struct stat a, b;
+ struct flock lock = {
+ .l_type = F_WRLCK,
+ .l_whence = SEEK_SET,
+ .l_len = 0,
+ };
fd = qemu_open(path, O_CREAT | O_WRONLY, S_IRUSR | S_IWUSR);
if (fd == -1) {
@@ -107,7 +112,7 @@ bool qemu_write_pidfile(const char *path, Error **errp)
goto fail_close;
}
- if (lockf(fd, F_TLOCK, 0) < 0) {
+ if (fcntl(fd, F_SETLK, &lock)) {
error_setg_errno(errp, errno, "Cannot lock pid file");
goto fail_close;
}