HelenOS sources
MODE_APPEND 159 uspace/lib/c/generic/io/io.c vfs_open(stdoutfd, MODE_APPEND);
MODE_APPEND 173 uspace/lib/c/generic/io/io.c vfs_open(stderrfd, MODE_APPEND);
MODE_APPEND 256 uspace/lib/c/generic/io/io.c *mode = MODE_APPEND | (plus ? MODE_READ | MODE_WRITE : MODE_WRITE);
MODE_APPEND 138 uspace/lib/posix/src/fcntl.c ((posix_flags & O_APPEND) ? MODE_APPEND : 0);
MODE_APPEND 287 uspace/srv/vfs/vfs_ops.c file->permissions = MODE_READ | MODE_WRITE | MODE_APPEND;
MODE_APPEND 326 uspace/srv/vfs/vfs_ops.c file->open_write = (mode & (MODE_WRITE | MODE_APPEND)) != 0;
MODE_APPEND 327 uspace/srv/vfs/vfs_ops.c file->append = (mode & MODE_APPEND) != 0;
HelenOS homepage, sources at GitHub