我有一个分区被挂载为noexec
。它显示在mount
输出中,但没有任何内容fstab
可以执行此操作。
从哪里来的noexec
?
我的 fstab:
UUID=1fbb29fe-cef2-4cc2-9b1e-ac45e74289ac / ext4 noatime,nodiratime,errors=remount-ro 0 1
# swap was on /dev/sda3 during installation
UUID=some-uuid-string none swap sw 0 0
/dev/sr0 /media/cdrom0 udf,iso9660 user,noauto 0 0
tmpfs /tmp tmpfs nodev,nosuid,noexec,size=2G 0 0
# old disks
#/dev/md0 /DATA ext4 noauto,nodiratime,errors=remount-ro,user 0 2
# new disks:
/dev/md1 /DATA ext4 noauto,nodiratime,errors=remount-ro,user 0 2
我以用户或 root 身份挂载了上面的 /DATA 分区。无论哪种情况,我都会得到:
/dev/md1 on /DATA type ext4 (rw,nosuid,nodev,noexec,nodiratime,relatime,errors=remount-ro,stripe=16384,data=ordered,user)
答案1
默认值确实是exec
,但是使用该user
选项意味着以下选项:
- 禁止执行
- 诺苏伊德
- 节点
详见man mount
:
user Allow an ordinary user to mount the filesystem. The name of the
mounting user is written to the mtab file (or to the private
libmount file in /run/mount on systems without a regular mtab)
so that this same user can unmount the filesystem again. This
option implies the options noexec, nosuid, and nodev (unless
overridden by subsequent options, as in the option line
user,exec,dev,suid).