autofs 源码分析

1. 挂载是在 文件modules\mount_generic.c

建目录
status = mkdir_path(fullpath, 0555);

挂载
err = spawnll(LOG_NOTICE,PATH_MOUNT, PATH_MOUNT, "-t", fstype,SLOPPYOPT "-o",options, what, fullpath, NULL);

2.卸载是在 daemon\automount.c

left = umount_multi(ap.path, 0);

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spawnll这段代码写得比较有意思，将另一个程序的输出到stdio的东西拦截下来。