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Support recursive mount attrs ("rro", "rnosuid", "rnodev", ...) #3272

Merged
merged 3 commits into from
Dec 8, 2021
Merged

Support recursive mount attrs ("rro", "rnosuid", "rnodev", ...) #3272

merged 3 commits into from
Dec 8, 2021

Commits on Dec 7, 2021

  1. go.mod: golang.org/x/sys v0.0.0-20211116061358-0a5406a5449c 

    Signed-off-by: Akihiro Suda <[email protected]>
    @AkihiroSuda
    AkihiroSuda committed Dec 7, 2021
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  2. Support nosymfollow mount option (kernel 5.10) 

    See MS_NOSYMFOLLOW in mount(2)

https://man7.org/linux/man-pages/man2/mount.2.html

Signed-off-by: Akihiro Suda <[email protected]>
    @AkihiroSuda
    AkihiroSuda committed Dec 7, 2021
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  3. Support recursive mount attrs ("rro", "rnosuid", "rnodev", ...) 

    The new mount option "rro" makes the mount point recursively read-only,
by calling `mount_setattr(2)` with `MOUNT_ATTR_RDONLY` and `AT_RECURSIVE`.
https://man7.org/linux/man-pages/man2/mount_setattr.2.html

Requires kernel >= 5.12.

The "rro" option string conforms to the proposal in util-linux/util-linux Issue 1501.

Fix issue 2823

Similary, this commit also adds the following mount options:
- rrw
- r[no]{suid,dev,exec,relatime,atime,strictatime,diratime,symfollow}

Signed-off-by: Akihiro Suda <[email protected]>
    @AkihiroSuda
    AkihiroSuda committed Dec 7, 2021
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