57 static int put_pid (int fd, pid_t pid);
58 static pid_t get_pid (int fd,int *err);
67 	int fd, tmpfd, i;  in uu_lock()  local
91 			if ((fd = open(lckname, O_RDONLY | O_CLOEXEC)) < 0)  in uu_lock()
94 			if ((pid_old = get_pid (fd, &err)) == -1)  in uu_lock()
97 			close(fd);  in uu_lock()
118 	(void)close(fd);  in uu_lock()
130 	int fd, err;  in uu_lock_txfr()  local
135 	if ((fd = open(lckname, O_RDWR | O_CLOEXEC)) < 0)  in uu_lock_txfr()
137 	if (get_pid(fd, &err) != getpid())  in uu_lock_txfr()
140         	lseek(fd, (off_t)0, SEEK_SET);  in uu_lock_txfr()
141 		err = put_pid(fd, pid) ? 0 : UU_LOCK_WRITE_ERR;  in uu_lock_txfr()
143 	close(fd);  in uu_lock_txfr()
199 put_pid(int fd, pid_t pid)  in put_pid()  argument
205 	return write (fd, buf, (size_t)len) == len;  in put_pid()
209 get_pid(int fd, int *err)  in get_pid()  argument
215 	bytes_read = read (fd, buf, sizeof (buf) - 1);  in get_pid()